Benchmarking: University and Target Organizations Essay

What is benchmarking? †¢ Benchmarking is an approach for departments to measure and compare themselves with higher-performing departments with the goal of identifying work processes, products, services, or strategies that will lead to improvement. Benefits of benchmarking †¢ Identify best practices that increase student satisfaction. †¢ Achieve efficiencies and increase productivity. †¢ Helpful during times of budget growth and reduction. †¢ Broaden perspectives and overcome resistance change. †¢ Demonstrate the quality and efficiency of your programs and services. Origins of benchmarking †¢ Emerged in 1980s as a survival tool for Xerox. †¢ In 1990, first university benchmark study conducted by the Council for the Advancement and Support of Education. †¢ In 1992, the National Association of College and University Business Officers (NACUBO) conducted a national benchmark study on administrative services. †¢ Since 1992, hundreds of schools have participated in NACUBO’s benchmark studies on topics ranging from admissions to purchasing. †¢ Today many higher education associations conduct benchmark studies. Opportunities for benchmarking in higher education †¢ Admissions – process of reviewing of applications †¢ Registrar – processing transcript requests †¢. Center for Student Involvement – processing the registration of student organizations †¢ Student Health Services – scheduling doctor appointments †¢ Campus Recreation – signing students up for recreation classes †¢ Career Services – registering employers in job fairs †¢ Crafts Center – registering students in workshops †¢ Human Resources – processing timesheets and payroll †¢ Transportation Services – arranging for special event parking services †¢ Police – computer – aided dispatch services †¢ Facilities Design – project design review process Five steps to benchmarking 1. Planning 2. Identifying target organizations 3. Data collection. 4. Analysis 5. Implementation Step 1. Planning †¢ Limit the study to what is vital to the performance of your department. †¢ Consider highly – regarded practices or services that can be made even better. †¢ Look into practices or services that students and staff regard as â€Å"broken†. – labor – intensive, time – consuming processes with suspected waste – Services or processes that generate dissatisfaction with students. – Processes that affect other key processes in your department or other departments. – Processes with poorly defined objectives or frequent errors requiring corrections. Prioritizing your benchmarking projects †¢. Potential for improvement in student satisfaction or staff productivity, †¢ Extent to which the process or service is broken, Feasibility of re-engineering the service or product. Selecting benchmark study team Involve staff members who are most familiar with the processes or services. If processes or services extend to other departments, involve their staff as well. Include a staff member who can successfully recruit the target organizations to participate in the study. Step 2. Identifying target organizations Identify recognized leaders based on: –awards, conference presentations, articles in association publications, and leaders in your  field. †¢ Target organizations can be departments: –internal to the university that perform similar processes or offer similar services. –with similar processes or services at other universities. –outside of higher education with similar functions, products, or services. Step 2. Identifying target organizations To ease the recruiting the process look for institutions that affiliate with one another in some manner. –They still need to be top performers! Secure their cooperation by: –Ensuring confidentiality of the results. – Making their participation easy by minimizing their investment of time in the study. – Promising to share the results. Step 3. Data collection †¢ The objective of data collection is to: – examine processes or services, – resources devoted to processes or services, and – measure performance. Step 3. Data collection Use methods such as: telephone interviews, on – line surveys, collection of department information (e. g. , organizational charts, procedure manuals) detailed flowcharts of internal processes interviews during meetings at conference, interviews and observation during site visits Step 3. Data collection †¢ Measuring performance involves developing metrics such as: †¢ QUALITY – student satisfaction surveys,  Ã¢â‚¬ ¢ EFFICIENCY – number of transactions completed per departmental FTE, or – departmental cost per transaction processed. Examples of metrics †¢ Benchmarking study of custodial services in Student Centers †¢ QUALITY †¢ Staff and student ratings of the appearance of various spaces in the facility (e. g. ,bathrooms, dining spaces, meeting spaces, lounge spaces). †¢ EFFICIENCY †¢ Number of FTE dedicated to custodial services divided by facility square footage †¢ Number of FTE dedicated to custodial services divided by the number of people who visit the facility each day †¢ Amount of supplies and expenses budgeted to  custodial services divided by the number of people who visit the facility each day. Step 4. Analysis †¢ Your analysis may focus on: †¢ Differences in quality and efficiency levels. †¢ Factors that contribute to the differences in quality and efficiency including: †¢ Organizational structure, †¢ Leadership and mission †¢ Organizational stability and staff experience, †¢ Policies, †¢ Work flows and internal processes, †¢ Use of technology such as the web, email, phone †¢ Staffing levels, †¢ Training of staff, †¢ Division of job responsibilities, †¢ Funding, †¢ Use of assessment to receive student feedback Step 5. Implementation †¢ Analysis phase culminates in a documented action plan and recommendations †¢ Identify strengths and weaknesses relative to benchmark partners, †¢ Recommendation may include changing: – processes, – job responsibilities, – staff involved, – use of technology and development of software tools. Resources †¢ American Society for Quality http://www. asq. org †¢ Student Voice http://www. studentvoice. com †¢ Educational Benchmarking Inc. http://www. webebi. com – Has national benchmark studies on first – year experience, housing, Greek life, student centers, student organization leaders. †¢ International Benchmarking Clearinghouse http://www. apqc. orgÃ'Ž

Industrial Relations And Labour Studies Architecture Essay

The Penan is a mobile native that roamed on the land of Sarawak Bumi Kenyalang and some other parts on Brunei Bandar Seri Begawan. They are a extremely evolved classless society and small gender division. Man and adult females shared largely the jobs among them. Such as, garnering the forest merchandise and extracted sago from the sago thenar. But they are still some portion of jobs was male dominated. For illustration, hunting. The Penan practiced the rite of ‘Molong ‘ which means ‘never return more than necessary ‘ . That had made them the hunter-gatherers. Not every of the Penans are mobile hunter-gatherers. The present Penans are consisted with settled, semi-nomadic and entire mobile communities that to the full reliant to the wood merchandises. Presents, the figure of Penan had officially stated approximate to 10,000 people and around 350-500 of them are mobile that scattered over Ulu Baram, Limbang, Tutoh and Lawas of Sarawak. Normally the mobile Penan moves in group that consisted about 40 people included kids and old people. They do non stayed for a long clip in a peculiar topographic point. Once the resources at the topographic point that they stayed became fewer, they will take other suited topographic points and moved once more. ( Figures retrievedfrom:hypertext transfer protocol: //www.survival-international.org) I have to contract down the range to the group of mobile Penan that I would wish to analyze approximately. The mobile people that lived in the forest rely much on their traditional diet- Sago ( amylum from the Sago thenar ) . As the Penan people valued the environment so much, merely the matured and to the full adult sago thenar trees will be cut down. The leader will do certain an sum of sago starched plenty from a individual or a few sago thenar trees and kept adequately for their supply. After that no more sago thenar will be chop down until they are ran out of nutrient. Besides that, the Penan besides preys on meat. And the protein result in their day-to-day diet was contributed by largely wild Sus scrofas, mouse cervid and monkeys. The huntsmans Hunt by utilizing a blowtube, made with the Belian wood and carved out with a bone drill. The darts that they used are made from the sago thenar ‘s tree bark and on its tip ; the Penan dipped it with sort of powerful toxicant latex that extracted from a tree from the wood. However, their manner of life is about to alter due to the force per unit areas that forced them to accommodate the cultivation of seting and domestic animate being genteelness.Issue to lift:As the Real GDP ( gross domestic production ) growing in Malaysia since the twelvemonth of 1999 to 2007 had improved in great per centum, Malaysia authorities had put a tonss of affords on the lumber industry in Sarawak territory. Sarawak was blessed with tonss of valuable trees. The authorities puts a strong accent on the processing lumber that can maximise the local net incomes. It is believe vital to maintain up with the big demand from Japan, India and the Far East states. Ironically, logging seems to convey great blessings to the state, in Sarawak it destroys legion of sago thenar and consuming a huge country of rain forest that the Penan people lived in. Poorly planned logging trails had caused the issues of Earth eroding, landslides and the silting of watercourses happened. The state of affairs had affected the functional relation among the Penan and the wood. Once the large trees were removed, shortly the secondary bushy forest will take over the bare wood bed. Meat becomes difficult to track and fruits that used to be big go less abundant. The Penan is holding troubles in roll uping and runing their nutrient. Resistance from both the settled and nomads were fierce. The authorities faced a difficult clip from those natives. The Sarawak authorities had frequently stated to convey upon the issue and promised to offer development to the Penan. About all nomads Penan go up against with logging and it happened to be immense spread of swearing and understanding between the authorities and the Penan. The authorities puzzled why would anyone desire so much to populate in the jungle and trusting thoughtfully the Penan will comes to their senses. On the other manus, the Penan had lost faith in their authorities as more and more bulldozers driven through their forest. In their position, logging merely convey them catastrophes and they will lose it all if they move a measure rearward from their base on protecting the forest. What is more, at the same clip they see the pristine forest been tear down, holding their districts distorted into oil thenar and acacia plantations is a calamity. Anyhow, as now the Penan had come across the job, they have a pick to do. Shall they stand firmed on their rule and allow the resistance of deforestation continued or merely accept what the authorities had offered and worked in tandem to predominate societal harmoniousness and peace? Can they defy the Penan society to alter? Surely it is a difficult determination to do, there are excessively many valuable things will hold to waive and finally became memory. Harmonizing to Bilton T, Bonnet K and the bookmans,the diverseness and changeableness of societal constructions are a centre subject, together with the disclosure that human action can recast societal dealingss and establishments ; it reveals the human potency for release and originative societal Reconstruction. ( Introductory Sociology: 2nd edition, Bilton T, Bonnet K, Jones P, Stanworth M, Sheard K and Webster A. 1987. Mackays of Chatham PLC, Kent ) Harmonizing to the statement above, societal alterations that happened to the Penan folk was due to the ground of rewording and retracing into a broad and originative society. But the point that I want to reason here is- Does the folk want to alter? Considered upon the motivation that they fight over their rights on the land and the forest, I strongly doubted their willingness in altering their societal concept and their societal life. There was a cause that forced them to travel out from the jungle ; there was a cause to necessitate them to give up their nature root. And it is our responsibility to unveil the secret. Social alteration was defined as the clip when external events happened, such as war and conquering and civilization contact and diffusion, or environmental factors or internal events, such as inventions, innovation and population displacements harmonizing to Barbara Marliene S. & A ; Mary Ann A. Schwartz ( 2006 ) In this point of position, the society of Penan changed when development and wealth interfered. Some of them accepted it and follow a new life manner yet some resisted it and willing to pay any monetary value to defence their existent life. Yet, this diffusion, the spread of civilization traits from one society to another, is the inevitable consequence of contact between civilizations. With modern communicating engineerings making into the most distant corners of the Earth, the rate of diffusion has accelerated dramatically since the bend of the 20th century. ( Sociology: Making sense of the societal universe, 2nd edition, Barbara Marliene Scott & A ; Mary Ann A. Schwartz. 2006, Allyn and Bacon Pearson. ) The societal alteration of the Penan folk was occurred because of the civilization contact and diffusion harmonizing to the statement above. When the civilization of new economic bloom and the up raise national income due to timber industries scatter to the land Sarawak, the districts of the Penan folk was the chief locale to be affected. For illustration, big graduated table of logging operation encroach their land doing them to endure under the pollutions. Their H2O catchment countries were polluted with sediment supplanting, many sago thenars were lost ; wild Sus scrofa, cervid and other game became scarce, the fruit trees and medical specialty purposed herb were difficult to happen. Therefore, their epinephrine prepared them to contend or flight. The consequence of societal alteration among the Penan is staying negative in footings of the authorities position. The Penan chose to contend. For illustration, many encirclements were set up in effort to halt logging operations on their land. Unfortunately, the attempts were difficult to transport on and the state of affairs turns bad with huge graduated table of clangs between the autochthonal community and the province supported logging company. For illustration, SamLing Corporation, lead by CEO Yew Chee Ming, COO James Ho Yam Kong. In association with the honest main curate ‘s privilege company known as STIDC. The Malayan Timber Certificate Council ( MTCC ) had granted the companies with a logging grant. It is average that they have the power to log even on the land that traditionally inhabited by the natives of Sarawak. Apart from the ground of civilization diffusion, the societal alteration that happened among the Penan was due to the cause of demographic tendencies. That is to state every birth, decease, and migration rates can impact the size and composing of a population, which in bend, can hold a major impact on a society.Barbara Marliene Scott& A ; Mary Ann A. Schwartz ( 2006 ) .For illustration, scarceness of nutrient and taint of environment. Presents, the Penan is covering with the exact jobs that I have stated above. Their nutrient becomes difficult to achieve and the inhabited environment was contaminated. These sorts of state of affairs makes their life in the jungle becomes tough and unease. On the other manus, the member in the group is keep diminishing due to migration. Migration refers to the motion of people into or out of a geographical country ( Barbara S & A ; Mary A, 2006 ) . This is to state, many child who grew up in the mobile group choose to travel out from the community and headed to the life manner in the metropolis. The birth rate in the group becomes lesser and lesser as the immature people instead choose a partner from the metropolis than they own people that stayed in the group. As clip base on ballss, merely old coevals and some few immature people will remain on. Finally, their group will turn out to be a smaller group and possibly faded off. It was non something surprise with the reactions that the mobile presented. Harmonizing to Barbara S & A ; Mary A ( 2006 ) ,the behaviour that is likely to emerge in such state of affairs is called corporate behaviour, the comparatively self-generated and unstructured behaviour engagevitamin D in by big Numberss of people who are responding to a common stimulation. ( Sociology: 2nd edition, doing sense of the societal universe. Pg63. 2006. Barbara Marliene Scott & A ; Mary Ann A. Schwartz. Allyn and Bacon Pearson ) The corporate behaviours that the Penan folk had were the attitude that they had shown. Such as, the confrontations with the logging companies and the encirclements that they had made. Corporate behaviours take many signifiers. Some are short-period, self-generated and unstructured. But some are durable, formalistic and well-planned. The signifier the Penan folk used to oppose their dissension was categorized in the center, which is societal motion. It tends to be long -lasting because it has to accomplish a certain end of altering societal order in some cardinal method. For case, the leaders of the Penan folk have a good organized program to achieve their end of continuing their rights on the land. They even met with Al-Gore and Prince Charles sing to their jobs. Harmonizing to Barbara Marliene Scott & A ; Mary Ann A. Schwartz, 2006 in Sociology 2nd edition-making sense of the societal universe, contemn the tremendous power of social establishments and other societal forces against the control of persons, formal organisations of single activism are frequently important to societal alteration and can sometimes agitate the foundation of a society. Such has been the instance with assorted actions that had taken to demo their dissatisfaction, including the protesting that brought upon the media and how the folk fought against the political power and obtained the opportunities to talk out to the universe. In my sentiment, the ways that the Penan took in protesting their disfavor was in the in-between portion of corporate behaviour and societal motion. It is non every bit well-structural as the societal motion because of their by and large free-form attack. Apart from that, it does non involved big Numberss of people. Compares to societal motion, t he manner that the Penan acquired was merely engaged comparatively little sum of people, such as their leaders and alders. It besides consisted a end ; a ground to contend for. So, it can besides be said a end oriented corporate behaviour. But, by deriving the impulse in their opposition and expostulation, they are to state a little measure from becomes societal motion and possibly, it might win in the hereafter!Decision:As everyone can see, societal alteration is non a little affair. Many facets in life have to be considered. Individual, groups, communities are loath to alter and confronting large battle to set from the life manner and conditions that they had used with. At the same clip the society have to differ themselves to keep existing conditions. For case, as jersey and denim has been introduced to the Penan, they have ever preferred chawat. However, when the clip has come, alterations have to be done. Conflicts and contradictions will happen within the procedure for certain . The Penan resists change because of their romanticized impression of traditional values and â€Å" the good old yearss † . ( Barbara S, Mary A, 2006 ) For illustration, the Penan people valued their forest home ground and their traditional rites really much, they like to bathe in the river ; they enjoyed the hunting activities ; they have used to every trees in the jungle. The fright of losing each of them caused them hesitated to have alterations. Not merely that, mobile Penan resists alterations merely merely because of inactiveness ; they have becomes complacent, even if their lives are far less than ideal. ( Barbara S, Mary A, 2006 ) Changes required people to make something different, and it may do a batch of uncomfortableness. Often, the leaders who accept the legitimacy of position quo would likely defy alterations the most. This is because with the credence, it might coerce them to reconsider the genuineness in the old society that used to specify their full intent and power. They might besides afraid of losing their people Black Marias and their prestigiousness in the society to the present authorities. Some mobile Penan refuses to accept alterations due to the miscommunication and misinformation. ( Barbara S, Mary A, 2006 ) . For illustration, the Penan regarded the present authorities as something bad, and they are bad in the context of infiltrated their land and infringed on their rights. It was clearly shown with the logging systems. During the stay of Bruce Parry, the leaders came from afar merely to inquire Bruce to direct their message to the authorities of British so that they can take over the authorities once more. They felt ferocious and anguish towards the Sarawak authorities ‘s making. Affords to advance societal alteration expected to see opposition been provoked as there will ever be person who do non derive anything or lost something if non everything due to the procedure of alterations. So, the phenomenon of the Penan opposition is natural and it is common if they persisted in their expostulation. Personally to state, the 1 who in charge of the forestation in Sarawak should hold been more justness to the people. Government should be the listening ear for the people non the taking manus. Merely the righteous authorities can last everlastingly in the people Black Marias.Mentions:hypertext transfer protocol: //www.survival-international.orgIntroductory Sociology: 2nd edition, Bilton T, Bonnet K, Jones P, Stanworth M, Sheard K and Webster A. 1987. Mackays of Chatham PLC, KentSociology: 2nd edition, doing sense of the societal universe. Pg63. 2006. Barbara Marliene Scott & A ; Mary Ann A. Schwartz. Allyn and Bacon Pearson

Chemistry- Alkanes and Alkenes

The process of naming compounds allows chemists to communicate formulae in words rather than in chemical symbols. There are, however, a few rules about naming compounds which need to be known in order to write a formula in word form or translate a compound in word form into chemical symbols. Ionic compounds If the compound is ionic, then the name of the cation (usually metal) comes first, followed by the ‘compound' name of the anion.To find the compound name of an anion, replace the end of the element's name with ‘ide'. name of cation + name of anion, suffix ‘ide' E. g. NaCl: sodium, the cation, first, followed by chlorine changed with the suffix ‘ide' = sodium chloride If the anion is polyatomic and contains oxygen, then the suffix is ‘ate'. name of cation + name of polyatomic oxygen anion, suffix ‘ate' E. g. Na2CO3: sodium, the cation, first, followed by a polyatomic group containing carbon and oxygen to form carbonate = sodium carbonate Note:E. g. MgO: magnesium, the cation, first, followed by oxygen changed with the suffix ‘ide' because oxygen is the sole ion and not part of a polyatomic group = magnesium oxide Sometimes if the compound contains hydrogen, the word ‘hydrogen' shortens to ‘bi' such as with NaHCO3, which is known as sodium hydrogen carbonate or sodium bicarbonate. Hydrogen compounds If the compound contains hydrogen and a metal, the metal comes first, followed by the word ‘hydride', to denote the hydrogen component. etal + hydride E. g. NaH: sodium, the metal, first, followed by hydrogen changed with the suffix ‘ide' = sodium hydride If the compound contains hydrogen and a non-metal and does not contain water (H2O), then the hydrogen comes first, followed by the element's name replaced with the ‘ide' suffix. hydrogen + non-metal, suffix ‘ide' E. g. HF: hydrogen first, followed by fluorine changed with the suffix ‘ide' = hydrogen fluoride If the hydrogen non-met al compound dissolves in water, it tarts with the ‘hydro' prefix, followed by the element's name replaced with an ‘ic' suffix, followed by ‘acid'. hydro(name of element, suffix ‘ic') acid E. g. HCl: hydro, then chlorine with an ‘ic' suffix, then ‘acid' = hydrochloric acid Oxygen compounds When naming ionic compounds that contain oxygen the basic rule is similar. If the compound contains hydrogen and an oxygen anion (oxyanion) and does not contain water, then hydrogen comes first, followed by the element name with the suffix ‘ate'. hydrogen + element, suffix ‘ate' E. g.HCO3: hydrogen followed by carbon with the suffix ‘ate' = hydrogen carbonate The ‘ate' rule is used for the most common or the only compound made with an oxyanion. Some compounds, however, form more than one type of compound with oxygen and the amount of oxygen will affect the prefixes and suffixes used. This occurs for all oxyanions, with or without hydrogen involved. Table 1. 1: Naming more than one type of oxygen compound Oxygen level| Prefix| Element| Suffix| A little oxygen| hypo-| | -ite| Some oxygen| | | -ite| More oxygen| | | -ate| A lot of oxygen| per-| | -ate|E. g. Chlorine forms four different oxyanions named: ClO = hypochlorite ClO2 = chlorite ClO3 = chlorate ClO4 = perchlorate The oxygen level corresponds with the relative amounts in different compounds and not necessarily the specific numbers of oxygen atoms. If an element forms just two types of oxyanion compounds, then the suffixes ‘ite' and ‘ate' will suffice. If the hydrogen oxyanion compound is dissolved in water, it forms an acid using similar rules, only the ‘ite' suffix changes to ‘ous' and the ‘ate' suffix changes to ‘ic', followed by the word ‘acid'.Table 1. 2: Naming more than one type of hydrogen oxyanion acid Oxygen level| Prefix| Element| Suffix| Acid| A little oxygen| hypo-| | -ous| | Some oxygen| | | -ous| | More oxy gen| | | -ic| | A lot of oxygen| per-| | -ic| | E. g. The above example with chlorine and oxygen plus hydrogen: HClO = hypochlorous acid HClO2 = chlorous acid HClO3 = chloric acid HClO4 = perchloric acid Covalent compounds If a compound contains two non-metals in a covalent bond, then: * the least electronegative element is named first if the compound contains hydrogen, hydrogen is named first * the number of atoms of each element is indicated by a prefix * if the first element only has one atom the prefix is not used * the name of the element has the suffix ‘ide' least electronegative + number prefix, most electronegative element, suffix ‘ide' The prefixes used to number the atoms come from Greek and are as follows: 1 = mono- or mon- 2 = di- 3 = tri- 4 = tetra- 5 = penta- | 6 = hexa- 7 = hepta- 8 = octa- 9 = nona- 10 = deca-| E. g.CO: carbon, the least electronegative atom, first, followed by the prefix ‘mon' to indicate one atom of oxygen, the most electronegativ e atom, with the suffix ‘ide' = carbon monoxide CO2 carbon, the least electronegative atom, first, followed by the prefix ‘di' to indicate two atoms of oxygen, the most electronegative atom, with the suffix ‘ide' = carbon dioxide H2O the prefix ‘di' to indicate two atoms of hydrogen, which has naming priority, followed by ‘mon' to indicate one atom of oxygen = dihydrogen monoxide Common names There are a number of common names that chemists like to use instead of the proper scientific names.Most common names and formulae are well-known. It is recommended that common names and formulae be written down as they are encountered so they can be memorised later. Here are a few examples: Common name | Proper name| Chemical formula| water| dihydrogen monoxide| H2O| baking soda| sodium hydrogen carbonate| NaHCO3| table salt| sodium chloride| NaCl| limestone| calcium carbonate| CaCO3| quartz| silicon dioxide| SiO2| See animation 1. What is an acid? Ancient civilis ations had already identified acid as a sour-tasting substance that corroded metal, but confirmation about the exact nature of acid eluded chemists until the 20th century.Early in the 20th century, a number of chemists developed specific chemical definitions for the term ‘acid', although many of these definitions refer to subatomic processes, going into much greater depth than required here. The simplest, most general definition is that an acid is a substance that contains hydrogen and which can release hydrogen cations (H+) during a reaction. The strength of an acid depends on its ability to release hydrogen ions – stronger acids release hydrogen ions more readily. Some of the properties of acid are that they: * Dissolve in water to form excess hydrogen ions Are highly reactive and will corrode most metals * Conduct electricity * Have a sour taste (strong acids are dangerous and should not be taste-tested) * Produce a stinging sensation (as above, strong acids should n ot be handled) There are some common edible acids such as citric acid, which is found in fruits like oranges, lemons and limes, acetic acid, found in vinegar, carbonic acid, which is the ‘fizz' in soft drinks and dairy products, which contain lactic acid. Examples of other acids include: sulphuric acid, present in batteries; and hydrochloric acid, which breaks down food in your stomach. See image 1.Acids like vinegar are used to preserve food because many organisms cannot live in an acidic environment. Similarly, fermentation of food can also produce an acidic environment for preservation purposes – vinegar is an acetic acid formed from grapes, lactic acid comes from fermentation of milk. What is a base? Bases are substances with the opposite properties to acids, that is, a base is a substance that accepts hydrogen ions in a reaction. Strong bases will accept more hydrogen ions than weak ones. Alkalis are soluble bases that contain hydroxide ions (OH-). Some properties of bases include that they: Dissolve in water to absorb excess hydrogen ions * Neutralise the effect of acid * Denature (change the molecular structure) of proteins * Have a bitter taste (strong bases are dangerous and should not be taste-tested) * Feel soapy (as above, strong bases should not be handled) Basic substances in everyday use include sodium hydrogen carbonate, also known as sodium bicarbonate, used in baking to help bread rise, sodium carbonate, used to make soap, and magnesium hydroxide, commonly used in indigestion remedies. Because of an ability to denature proteins, basic substances break down grease and make good cleaners.Considering that the human body is made up of proteins, this makes bases more dangerous for humans than acids. Clarification of terms Before proceeding, it is important to clarify some terms used in experiments with acids and bases. Strong substances are either acids that readily lose hydrogen cations or bases that readily gain hydrogen ions; weak substances less readily lose or gain hydrogen ions. For clarity, concentrated acids and bases are either pure or come dissolved in very little water, while dilute substances are dissolved in a lot of water.Therefore, strong and weak refer to the chemical reactivity of an acidic/basic substance while dilute and concentrate refer to the ratio of water into which the substance dissolves. Indicators It is also important to learn about some of the ways in which to test the strength of acidic and basic substances, since it is not permitted to taste or touch chemicals in a laboratory environment. Chemical substances are classified as acidic (containing acid), basic (containing base) or neutral (containing neither acid nor base). Chemists have developed a number of methods to test the acidity or alkalinity of a substance using chemical indicators.These indicators use the pH scale, with measurements from one to 14 based on the activity of hydrogen ions in the solution. Substances with a low pH are acidic. Substances with a reading of seven are neutral while basic solutions will elicit a higher reading. Developed by Danish scientist Soren Sorensen, the pH scale may have come from the German word ‘potenz' (meaning power or potency) and ‘H', the chemical symbol for hydrogen. It is also possible the term is derived from the Latin ‘pondus hydrogenii', which translates to ‘weight of hydrogen'. See animation 1.Many plants are excellent indicators of pH as they need optimum acidity/alkalinity in the soil to grow. Hydrangeas produce white or blue flowers in acidic soil or pink flowers in basic soil. Blue or red litmus paper, made from a fungal/bacterial growth called lichen, turns red in acid or blue in a base but will not change colour in a neutral solution. A synthetic indicator, bromothymol blue, starts blue and then changes yellow in acid. If placed in a basic or neutral substance it will remain blue. Another indicator would be needed to find out if the substance were neutral or basic.This demonstrates that when using an indicator it is necessary to observe a change in colour to define whether a substance is acidic, basic or neutral. Most indicators have only two colours. The universal indicator is an instrument that mixes several types of indicators and colours in order to show whether a substance is acidic, basic or neutral. Universal indicators have a colour scale that corresponds to the numbered pH scale. After testing, the colour of the paper is matched to a number on the scale for a more exact reading of acidity or alkalinity. See image 2. ReactionsSince acids and bases are more or less opposite substances, they tend to cancel each other out in a process called neutralisation. This reaction produces a salt and water. acid + base salt + water Neutralisation is commonly used in a number of remedies, such as the treatment of bites and stings. Bluebottles inject a basic substance when they sting, so a weak acid like vinegar ( acetic acid) will neutralise a bluebottle sting. Conversely, bee stings are slightly acidic, so a bee sting would be neutralised with a weak base, such as sodium bicarbonate. Seafood gives off an odour due to the basic amines it contains.An acidic acid substance such as lemon juice is squeezed over it to neutralise the smell. Excess acid in the stomach causes indigestion, so it can be neutralised with a weak base called an antacid. An example of an equation using this format is when hydrochloric acid meets sodium hydroxide to form sodium chloride and water: HCl + NaOH NaCl + H2O Adding an acid to a base does not necessarily mean that the product is automatically neutralised. The strength of each of the reactants must be matched so that all the ions released by the acid find a place with the base.A strong acid with a weak base will result in an acidic salt, a weak acid with a strong base will result in a basic salt, while acids and bases of the same strength will neutralise completel y. Both acidic and metallic substances are highly reactive, which is why acid reacts aggressively in the presence of metal, corroding the metal much faster than moisture and air. The combination of an acid and a metal produces a metallic salt and hydrogen gas in an equation represented like this: acid + metal metallic salt + hydrogen The hydrogen ions are easily lost and replaced by the metallic ions, forming a metallic salt.The hydrogen then forms molecules with itself, resulting in hydrogen gas. An example of this is sulphuric acid and magnesium producing magnesium sulphate salt and hydrogen gas: H2SO4 + Mg MgSO4 + H2 No Flash, No Problem Highlight to reveal names Formula| Names| N2F6| Dinitrogen Hexafluoride| CO2| Carbon Dioxide| SiF4| Silicon Tetrafluoride| CBr4| Carbon Tetrabromide| NCl3| Nitrogen Trichloride| P2S3| Diphosphorous Trisulfide| CO| Carbon Monoxide| NO2| Nitrogen Dioxide| SF2| Sulfur Difluoride| PF5| Phosphorous Pentafluoride| SO2| Sulfur Dioxide| NO| Nitrogen Mono xide| CCl4| carbon tetrachloride|P2O5| diphosphorus pentoxide| | | Rules 1. The first element is named first, using the elements name. 2. Second element is named as an Anion (suffix â€Å"-ide†) 3. Prefixes are used to denote the number of atoms 4. â€Å"Mono† is not used to name the first element Note: when the addition of the Greek prefix places two vowels adjacent to one another, the â€Å"a† (or the â€Å"o†) at the end of the Greek prefix is usually dropped; e. g. , â€Å"nonaoxide† would be written as â€Å"nonoxide†, and â€Å"monooxide† would be written as â€Å"monoxide†. The â€Å"i† at the end of the prefixes â€Å"di-† and â€Å"tri-† are never dropped. Prefix| number indicated| | mono-| 1| | di-| 2| | tri-| 3| | tetra-| 4| | penta-| 5| | hexa-| 6| | hepta-| 7| | octa-| 8| | nona-| 9| | deca-| 10| Carbon Allotropes by siebo— last modified April 20, 2007 – 11:54 The allotropes of ca rbon are the different molecular configurations (allotropes) that pure carbon can take. Following is a list of the allotropes of carbon, ordered by notability, and extent of industrial use. Diamond Main article: Diamond Diamond is one of the best known allotropes of carbon, whose hardness and high dispersion of light make it useful for industrial applications and jewelry.Diamond is the hardest known natural mineral, making it an excellent abrasive and also means a diamond holds its polish extremely well and retains luster. The market for industrial-grade diamonds operates much differently from its gem-grade counterpart. Industrial diamonds are valued mostly for their hardness and heat conductivity, making many of the gemological characteristics of diamond, including clarity and color, mostly irrelevant. This helps explain why 80% of mined diamonds (equal to about 100 million carats or 20,000 kg annually), unsuitable for use as gemstones and known as bort, are destined for industrial use.In addition to mined diamonds, synthetic diamonds found industrial applications almost immediately after their invention in the 1950s; another 400 million carats (80,000 kg) of synthetic diamonds are produced annually for industrial use—nearly four times the mass of natural diamonds mined over the same period. The dominant industrial use of diamond is in cutting, drilling, grinding, and polishing. Most uses of diamonds in these technologies do not require large diamonds; in fact, most diamonds that are gem-quality except for their small size, can find an industrial use.Diamonds are embedded in drill tips or saw blades, or ground into a powder for use in grinding and polishing applications. Specialized applications include use in laboratories as containment for high pressure experiments (see diamond anvil), high-performance bearings, and limited use in specialized windows. With the continuing advances being made in the production ofsynthetic diamond, future applications a re beginning to become feasible. Garnering much excitement is the possible use of diamond as asemiconductor suitable to build microchips from, or the use of diamond as a heat sink in electronics.Significant research efforts in Japan, Europe, and the United Statesare under way to capitalize on the potential offered by diamond's unique material properties, combined with increased quality and quantity of supply starting to become available from synthetic diamond manufacturers. Each carbon atom in diamond is covalently bonded to four othercarbons in a tetrahedron. These tetrahedrons together form a 3-dimensional network of puckered six-membered rings of atoms. This stable network of covalent bonds and the three dimensional arrangement of bonds that diamond is so strong. GraphiteMain article: Graphite Graphite (named by Abraham Gottlob Werner in 1789, from the Greek : â€Å"to draw/write†, for its use in pencils) is oneof the most common allotropes of carbon. Unlike diamond, grap hite is a conductor, and can be used, for instance, as the material in the electrodes of an electrical arc lamp. Graphite holds the distinction ofbeing the most stable form of solid carbon ever discovered. Graphite is able to conduct electricity due to the unpaired fourth electron in each carbon atom. This unpaired 4th electron forms delocalisedplanes above and below the planes of the carbon atoms.These electrons are free to move, so are able to conduct electricity. However, the electricity is only conducted within the plane of the layers. Graphite powder is used as a dry lubricant. Although it might be thought that this industrially important property is due entirely to the loose interlamellar coupling between sheets in the structure, in fact in a vacuum environment (such as in technologies for use in space), graphite was found to be a very poor lubricant. This fact lead to the discovery that graphite's lubricity is due to adsorbed air and water between the layers, unlike other lay ered dry lubricants such as molybdenum disulfide.Recent studies suggest that an effect called superlubricity can also account for this effect. When a large number of crystallographic defects bind these planes together, graphite loses its lubrication properties and becomes what is known as pyrolytic carbon, a useful material in blood-contacting implants such as prosthetic heart valves. Natural and crystalline graphites are not often used in pure form as structural materials due to their shear-planes, brittleness and inconsistent mechanical properties.In its pure glassy (isotropic) synthetic forms, pyrolytic graphite and carbon fiber graphite is an extremely strong, heat-resistant (to 3000  °C) material, used in reentry shields for missile nosecones, solid rocket engines, high temperature reactors, brake shoes and electric motor brushes. Intumescent or expandable graphites are used in fire seals, fitted around the perimeter of a fire door. During a fire the graphite intumesces (expa nds and chars) to resist fire penetration and prevent the spread of fumes. A typical start expansion temperature (SET) is between 150 and 300 degrees Celsius.Amorphous carbon Main article: Amorphous carbon Amorphous carbon is the name used for carbon that does not have any crystalline structure. As with all glassy materials, some short-range order can be observed, but there is no long-range pattern of atomic positions. While entirely amorphous carbon can be made, most of the material described as â€Å"amorphous† actually contains crystallites of graphite [1] or diamond [2]with varying amounts of amorphous carbon holding them together, making them technically polycrystalline or nanocrystalline materials.Commercial carbon also usually contains significant quantities of other elements, which may form crystalline impurities. Coal and soot are both informally called amorphous carbon. However, both are products of pyrolysis, which does not produce true amorphous carbon under norma l conditions. The coal industry divides coal up into various grades depending on the amount of carbon present in the sample compared to the amount ofimpurities. The highest grade, anthracite, is about 90 percent carbon and 10% other elements. Bituminous coal is about 75-90 percent carbon, and lignite is the name for coal that is around 55 percent carbon.Fullerenes Main article: Fullerene The fullerenes are recently-discovered allotropes of carbon named after the scientist and architect Richard Buckminster Fuller, but were discovered in 1985 by a team of scientists from Rice University and the University of Sussex, three of whom were awarded the 1996 Nobel Prize in Chemistry. They are molecules composed entirely of carbon, which take the form ofa hollow sphere, ellipsoid, or tube. Spherical fullerenes are sometimes called buckyballs, while cylindrical fullerenes are called buckytubes or nanotubes.As of the early twenty-first century, the chemical and physical properties of fullerenes are still under heavy study, in both pure and applied research labs. In April 2003, fullerenes were under study for potential medicinal use — binding specific antibiotics to the structure to target resistant bacteria and even target certain cancer cells such as melanoma. Fullerenes are similar in structure to graphite, which is composedof a sheet of linked hexagonal rings, but they contain pentagonal (or sometimes heptagonal) rings that prevent the sheet from being planar. Carbon nanotubes Main article: Carbon nanotubeCarbon nanotubes are cylindrical carbon molecules with novel properties that make them potentially useful in a wide variety of applications (e. g. , nano-electronics, optics, materials applications, etc. ). They exhibit extraordinary strength and unique electrical properties, and are efficient conductors of heat. Inorganic nanotubes have also been synthesized. A nanotube (also known as a buckytube) is a member of the fullerene structural family, which also incl udes buckyballs. Whereas buckyballs are spherical in shape, a nanotube is cylindrical, with at least one end typically capped with a hemisphere of the buckyball structure.Their name is derived from their size, since the diameter of a nanotube is on the order of a few nanometers(approximately 50,000 times smaller than the width of a human hair), while they can be up to several centimeters in length. There are two main types of nanotubes: single-walled nanotubes (SWNTs) and multi-walled nanotubes (MWNTs). Aggregated diamond nanorods Main article: Aggregated diamond nanorods Aggregated diamond nanorods, or ADNRs, are an allotrope of carbon believed to be the least compressible material known to humankind, as measured by its sothermal bulk modulus; aggregated diamond nanorods have a modulus of 491 gigapascals (GPa), while a conventional diamondhas a modulus of 442 GPa. ADNRs are also 0. 3% denser than regular diamond. The ADNR material is also harder than type IIa diamond and ultrahard fullerite. Glassy carbon Main article: Glassy carbon Glassy carbon is a class of non-graphitizing carbon which is widely used as an electrode material in electrochemistry, as well as for high temperature crucibles and as a component of some prosthetic devices.It was first produced by workers at the laboratories of The General Electric Company, UK, in the early 1960s, using cellulose as the starting material. A short time later, Japanese workers produced a similar material from phenolic resin. The preparation of glassy carbon involves subjecting the organic precursors to a series of heat treatments at temperatures up to 3000oC. Unlike many non-graphitizing carbons, they are impermeable to gases and are chemically extremely inert, especially those which have been prepared at very high temperatures.It has been demonstrated that the rates of oxidation of certain glassy carbons in oxygen, carbon dioxide or water vapour are lower than those of any other carbon. They are also highly resist ant to attack by acids. Thus, while normal graphiteis reduced to a powder by a mixture of concentrated sulphuric and nitric acids at room temperature, glassy carbon is unaffected by such treatment, even after several months. Carbon nanofoam Main article: Carbon nanofoam Carbon nanofoam is the fifth known allotrope of carbon discovered in 1997 by Andrei V.Rode and co-workers at the Australian National University in Canberra. It consists of a low-density cluster-assembly of carbon atoms strung together in a loose three-dimensional web. Each cluster is about 6 nanometers wide and consists of about 4000 carbon atoms linked in graphite-like sheets that are given negative curvature by the inclusion of heptagons among the regular hexagonal pattern. This is the opposite of what happens in the case of buckminsterfullerenes, in which carbon sheets are given positive curvature by the inclusion of pentagons.The large-scale structure of carbon nanofoam is similar to that of an aerogel, but with 1% of the density of previously produced carbon aerogels – only a few times the density of air at sea level. Unlike carbon aerogels, carbon nanofoam is a poor electrical conductor. Lonsdaleite Main article: Lonsdaleite Lonsdaleite is a hexagonal allotrope of the carbon allotrope diamond, believed to form when meteoric graphite falls to Earth. The great heat and stress of the impact transforms the graphite into diamond, but retains graphite's hexagonal crystal lattice.Lonsdaleite was first identified from the Canyon Diablo meteorite at Barringer Crater (also known as Meteor Crater) in Arizona. It was first discovered in 1967. Lonsdaleite occurs as microscopic crystals associated with diamond in the Canyon Diablo meteorite; Kenna meteorite, New Mexico; and Allan Hills (ALH) 77283, Victoria Land, Antarctica meteorite. It has also been reported from the Tunguska impact site, Russia. Chaoite Main article: Chaoite Chaoite is a mineral believed to have been formed in meteorite impac ts.It has been described as slightly harder than graphite with a reflection colour of grey to white. However, the existence of carbyne phases is disputed – see the entry on chaoite for details. Variability of carbon The system of carbon allotropes spans an astounding range ofextremes, considering that they are all merely structural formations ofthe same element. Between diamond and graphite * Diamond is hardest mineral known to man (10 on Mohs scale), but graphite is one of the softest (1 – 2 on Mohs scale). * Diamond is the ultimate abrasive, but graphite is a very good lubricant. Diamond is an excellent electrical insulator, but graphite is a conductor of electricity. * Diamond is usually transparent, but graphite is opaque. * Diamond crystallizes in the isometric system but graphite crystallizes in the hexagonal system. Between amorphous carbon and nanotubes * Amorphous carbon is among the easiest materials to synthesize, but carbon nanotubes are extremely expensive to make. * Amorphous carbon is completely isotropic, but carbon nanotubes are among the most anisotropic materials ever produced. ALKENE NAMES Root names give the number of carbons in the longest continuous chain.Alkene names are formed by dropping the â€Å"ane† and replacing it with â€Å"ene†The following list gives samples:Example: root = propane – drop â€Å"ane† = â€Å"prop† alkene = â€Å"prop† + alkene ending = â€Å"ene† = propene | No. of Carbons| Root Name| Formula CnH2n| Structure| 2| ethene| C2H4| CH2=CH2| 3| propene| C3H6| CH2=CHCH3| 4| 1-butene| C4H8| CH2=CHCH2CH3| 5| 1-pentene| C5H10| CH2=CHCH2CH2CH3| Following is a list of alkanes showing their chemical formulas, their names, the number of isomers, and the melting and the boiling point. Please note that, except for the first four alkanes (n=1.. ), their chemical names can be derived from the number of C atoms by using Greek numerical prefixes denoting the number of carbons and the suffix â€Å"-ane†. Formula| Name(s)| No. of Isomers| m. p. [ °C]| b. p. [ °C]| CH4| methane (natural gas)| 1| -183| -162| C2H6| ethane| 1| -172| -89| C3H8| propane; dimethyl methane| 1| -188| -42| C4H10| n-butane; methylethyl methane| 2| -138| 0| C5H12| n-pentane| 3| -130| 36| C6H14| n-hexane| 5| -95| 69| C7H16| n-heptane| 9| -91| 98| C8H18| n-octane| 18| -57| 126| C9H20| n-nonane| 35| -54| 151| C10H22| n-decane| 75| -30| 174|The simplest organic compounds are hydrocarbons. Hydrocarbons contain only two elements, hydrogen and carbon. A saturated hydrocarbon or alkane is a hydrocarbon in which all of the carbon-carbon bonds are single bonds. Each carbon atom forms four bonds and each hydrogen forms a single bond to a carbon. The bonding around each carbon atom is tetrahedral, so all bond angles are 109. 5 °. As a result, the carbon atoms in higher alkanes are arranged in zig-zag rather than linear patterns. Straight Chain Alkanes The general formula for an alkane is CnH2n+2 where n is the number of carbon atoms in the molecule.There are two ways of writing a condensed structural formula. For example, butane may be written as CH3CH2CH2CH3 or CH3(CH2)2CH3. Rules for Naming Alkanes * The parent name of the molecule is determined by the number of carbons in the longest chain. * In the case where two chains have the same number of carbons, the parent is the chain with the most substituents. * The carbons in the chain are numbered starting from the end nearest the first substituent. * In the case where there are substituents having the same number of carbons from both ends, numbering starts from the end nearest the next substituent. When more than one of a given substituent is present, a prefix is applied to indicate the number of substituents. Use di- for two, tri- for three, tetra- for four, etc. and use the number assigned to the carbon to indicate the position of each substituent. Branched Alkanes * Branched substituents are numbered starting from the carbon of the substituent attached to the parent chain. From this carbon, count the number of carbons in the longest chain of the substituent. The substituent is named as an alkyl group based on the number of carbons in this chain. Numbering of the substituent chain starts from the carbon attached to the parent chain. * The entire name of the branched substituent is placed in parentheses, preceded by a number indicating which parent-chain carbon it joins. * Substituents are listed in alphabetical order. To alphabetize, ignore numerical (di-, tri-, tetra-) prefixes (e. g. , ethyl would come before dimethyl), but don't ignore don't ignore positional prefixes such as iso and tert (e. g. , triethyl comes before tertbutyl). Cyclic Alkanes * The parent name is determined by the number of carbons in the largest ring (e. g. , cycloalkane such as cyclohexane). In the case where the ring is attached to a chain containing additional carbons, the ring is considered to be a su bstituent on the chain. A substituted ring that is a substituent on something else is named using the rules for branched alkanes. * When two rings are attached to each other, the larger ring is the parent and the smaller is a cycloalkyl substituent. * The carbons of the ring are numbered such that the substituents are given the lowest possible numbers. Straight Chain Alkanes # Carbon| Name| Molecular Formula| Structural Formula| 1 | Methane | CH4 | CH4 | 2 | Ethane | C2H6 | CH3CH3 | | Propane | C3H8 | CH3CH2CH3 | 4 | Butane | C4H10 | CH3CH2CH2CH3 | 5 | Pentane | C5H12 | CH3CH2CH2CH2CH3 | 6 | Hexane | C6H14 | CH3(CH2)4CH3 | 7 | Heptane | C7H16 | CH3(CH2)5CH3 | 8 | Octane | C8H18 | CH3(CH2)6CH3 | 9 | Nonane | C9H20 | CH3(CH2)7CH3 | 10 | Decane | C10H22 | CH3(CH2)8CH3 | Alkenes contain carbon-carbon double bonds. They are also called unsaturated hydrocarbons. The molecular formular is CnH2n. This is the same molecular formula as a cycloalkane. Structure of Alkenes 1. The two carbon ato ms of a double bond and the four atoms attached to them lie in a plane, with bond angles of approximately 120 ° . A double bond consists of one sigma bond formed by overlap of sp2 hybrid orbitals and one pi bond formed by overlap of parallel 2 P orbitals Here is a chart containing the systemic name for the first twenty straight chain alkenes. Name| Molecular formula| Ethene| C2H4| Propene| C3H6| Butene| C4H8| Pentene| C5H10| Hexene| C6H12| Heptene| C7H14| Octene| C8H16| Nonene| C9H18| Decene| C10H20| Undecene| C11H22| Dodecene| C12H24| Tridecene| C13H26| Tetradecene| C14H28| Pentadecene| C15H30| Hexadecene| C16H32| Heptadecene| C17H34| Octadecene| C18H36| Nonadecene| C19H38|Eicosene| C20H40| Did you notice how there is no methene? Because it is impossible for a Carbon to have a double bond with nothing. The Basic Rules: A. For straight chain alkenes, it is the same basic rules as nomenclature of alkanes except change the suffix to â€Å"-ene. † i. Find the Longest Carbon Ch ain that Contains the Carbon Carbon double bond. (If you have two ties for longest Carbon chain, and both chains contain a Carbon Carbon double bond, then look for most substituted chain. ) ii. Give the lowest possible number to the Carbon Carbon double bond. 1.Do not need to number cycloalkenes because it is understood that the double bond is in the one position. 2. Alkenes that have the same molecular formula but the location of the doble bonds are different means they are constitutional isomers. 3. Functional Groups with higher priority: iii. Add substituents and their position to the alkene as prefixes. Of course remember to give the lowest numbers possible. And remember to name them in alphabetical order when writting them. iv. Next is identifying stereoisomers. when there are only two non hydrogen attachments to the alkene then use cis and trans to name the molecule.In this diagram this is a cis conformation. It has both the substituents going upward. (This molecule would be c alled (cis) 5-chloro-3-heptene. ) Trans would look like this v. On the other hand if there are 3 or 4 non-hydrogen different atoms attached to the alkene then use the E, Z system. E (entgegen) means the higher priority groups are opposite one another relative to the double bond. Z (zusammen) means the higher priority groups are on the same side relative to the double bond. (You could think of Z as Zame Zide to help memorize it. ) In this example it is E-4-chloro-3-heptene.It is E because the Chlorine and the CH2CH3 are the two higher priorities and they are on opposite sides. vi. A hydroxyl group gets precedence over th double bond. Therefore alkenes containing alchol groups are called alkenols. And the prefix becomes –enol. And this means that now the alcohol gets lowest priority over the alkene. vii. Lastly remember that alkene substituents are called alkenyl. Suffix –enyl. B. For common names i. remove the -ane suffix and add -ylene. There are a couple of unique one s like ethenyl's common name is vinyl and 2-propenyl's common name is allyl.

Different Kinds of Bacteria Essay Example | Topics and Well Written Essays - 4250 words

Different Kinds of Bacteria - Essay Example Despite the fact that it is normally hard to investigate in situ, important biological traits are characterized to these assemblages, encompassing co-operative behavior, defense against predators, competitive advantage, antibiotics, physical disturbance and immune system (Sutherland 2001b). These assemblages vary from the hugely random aggregation of bacteria developing on surfaces, in semi-solid surroundings or in limited volumes, to complicated structures integrating considerable amount of extracellular medium material. This latter kind of assemblages symbolizes biofilms in strio senso, and the existence of structural matrix material issues biofilms with a unified physical identity that may be lacking both in a settlements and in glop (Davey & O'Toole 2000). It is evident that the physical resilience of biofilms is the outcome of multiple interactions between matrix elements (usually exopolysacharides, EPS), bacterial surface additios (flagella, fimbriae and aggreagation concepts) and coverings (lipopolysacharide, LPS) and the surface settled by the bacteria. In the case of the biofims generated by salmonella typhimurium enteritidis rdar mutants, and the pseudomonas fluoresccens SBW25 wrinkly spreader, the expression of a cellulose matrix and a fimbrial-like attachment issues are the main elements adding to biofilm strength and integrity (Lappin-Scott et al. 1995). In each case, biofilms generate at their-liquid (A-L) interface and are substantially bigger and more robust than the archetypical submerged biofilm generated by several other bacteria, for instance, pseudomonas aeruginosa. The wrinkly spreader (WS) refers to a niche-specialist genotype that colonizes the A-L border of liquid cultures, developing an A-L biofilm, and develops badly in the liquid discourse (Donlan 2002). Background on Pseudomonas fluorescens It occurs by spontaneous mutation from the ancestral (smooth; SM), non-biofilm-forming P. fluorescens SBW25 strain, in spatially configured micr ocosms, and displays massive negative frequency-advantage is attributable to cooperation among personal WS cells: overproduction of attachment factors, whereas costly personal cells, outcomes in the interests of individuals aligning with those of the group and permits migration of the oxygen-replete A-L boundary. According to some research conducted concerning these genes needed for biofilm generation through P. fluorescens WS (using one specific WS isolate, PR1200, mini-Tn5 mutagenesis recognized two main loci – the wsp chemosensory operon programming the response regulator WspR, and the wss cellulose biosynthesis operon that encompasses genes engrossed in the partial acetylation of the cellulose matrix (Dunne 2002). WspR is needed for the expression of cellulose and a supposed curli or thin aggregate fimbriae (Tafi)-like attachment factor, both of which are needed for ordinary WS biofilm establishment and colony formation (Al-Tahhan, Sandrin, Bodour & Maier 2000). Moreover, the cellulose acetylation-defective mutant WS-18 (WS wssF; mini-Tn5) was discovered to generate weak biofilms. These discoveries propose that the physical incorporation of the WS biofilm outcomes from the mingles between cellulose fibres and attachment factor, and between attachment factor and the ramparts of the microcosm vial. This latter interaction is needed during the initial phase of biofilm establishment when bacteria attach in the meniscus area of the loquid to the glass vials (Gaspar, Marolda & Valvano 2000). Successive development out over the A-L interface outcomes in the characteristic WS biofilm. One of the prior recognized WS

My reflection Assignment Example | Topics and Well Written Essays - 250 words - 1

My reflection - Assignment Example been considered the traditional family, the source brings into light changing family setups and the contentious issues that surround the definition of the traditional family. Handel et al. (2011) elaborate the extent to which different agencies of socialization impact child behavior. At home and in school for example, children’s behavior are molded to conform with certain rules. Parents and teachers play a significant role in correcting errant behavior and guiding children to adopt socially acceptable ones, as opposed to those that are considered negative. Like the other agencies of socialization, peer influence greatly shape the way children develop. As peers, for example, children engage in such activities as play and collaboration against parents and teachers to resist some of the directions given to them by the significant others. By engaging in different activities as peers, children get to learn interpersonal skills much as they learn emotional regulatory ability mostly from their parents. In general, Handel et al. Paint a broad, albeit vivid picture of how the school, family and peer group affect children’s

Business Law Research Paper Example | Topics and Well Written Essays - 1250 words

Business Law - Research Paper Example In the mid of 1970s, more than 400 companies of US origin having international footprints of were paying almost more than $300 million to different groups and individuals such as political parties, major politicians, ministers and the authorities that were holding power (Weiss 6). The renowned company, manufacturer of the world renowned fighter jet F-16 had paid personnel of foreign countries to show a tendency and preference for their product. In another investigation, it was reported that a famous company actually bribed the president of a foreign country, Honduras, to offer them discounted tax policy for their operations in that country. They give $2.5 million to the country’s president for a tax saving of around $7.5 million and another $750,000 to Italian official for allowing the import of the company’s products. When the president of Honduras raised the taxes, the chairman of the company was so depressed that he committed suicide. These were some important reason s which led to the making of this famous law which is now an essential for good corporate governance for any company. The act which was enacted by President Jimmy Carter was further amended in 1988 as the international anti-bribery law. Ethical Standing: Ethical behavior is strictly not a global standard at all. In some of the regions of the world, paying a bribe in terms of cash kickbacks and/or other tangible favours is still not considered an ethical or moral issue that can be termed as unlawful; rather it is just the ‘cost of doing business’ (Howell 1). The question here arises that should the bribe be paid or not. However, with globalization and emerging trade relationships ethics and corporate governance are gaining strong grounds. In most of the business schools, the faculty might be educating their future generations with adaptability and ways of working out with the situation. Mostly the reason they give of doing so is as they believe that the entire motive is the bottom line. So the fact that whether any particular business’s ethics should become accustomed to the local environment or become as a standard for its operations around the whole globe becomes a question mark in terms of ethics. Many of the business graduates and young managers give the argument, "When in Rome, do as the Romans do." In simple words, we should follow local/host country’s practices and assimilate according to their businesses customs if we have to build a successful and sustainable business environment. In Harvard Business School, a termed coined by two leading faculty members of business ethics, Joseph Fletcher and James Adams, was "situational ethics," which was based on bendable and realistic approaches towards such complex business dilemmas (George 1). Perhaps, most business tycoons do follow it as well and that is why they have been very successful. The corrupt systems and politicians with big wide open mouths are ready to swallow dollars for each tiny task they can control. Foreign corrupt practices are an umbrella to guide the businesses when they start operating globally. When businessmen talk about the â€Å"business ethics† they typically refer to one of three aspects: Keep away from breach the ‘criminal law’ in their work-related activities Stay away from actions that might result in civil law suits against them or their businesses Avoid any

Business Organizations; Employment Law Essay Example | Topics and Well Written Essays - 250 words

Business Organizations; Employment Law - Essay Example adequate oversight of the accountants was lacking, presence of conflict of interest by the stock analysts, inadequate funding of the Securities and Exchange Commission, lack of adequate disclosure of provisions and presence of corporate governance procedures that were weak. It has been argued that Adelphia’s acts, especially the move by the Rigas family of mixing the finances of the company with those of the company, represents one of the biggest cases of financial fraud in a publicly traded company. In 2004, the SEC filed suit against Adelphia Communications Corporations on charges of financial fraud. In a legal move labelled as the most comprehensive in financial fraud, members of the Rigas family were indicted together with a number of top executives. The charges included-corporate asset waste, RICO act violation, abuse of control, fraudulent conversion and conveyance of company assets, breach of fiduciary duties by the board of directors, and unjust enrichment by the management. The Adelphia Communications case, is one of the biggest cases of corporate malfeasance and has been responsible for the adoption of new business ethics and practices across the globe. Following the scandal, many companies across the globe have adopted stringent corporate codes of conduct, while governments have adopted greater measures to punish management staff from defrauding companies by sentencing guilty parties to life sentences and imposing hefty fines. Improvement and reform of corporate law has been mandated following the scandal. For example, the Corporate Reform Act 2002 empowers the SEC to promulgate professional codes of conduct for securities lawyers. It mandates securities lawyers to prevent violations of securities law by companies or a company employee breaching his/her fiduciary duty to shareholders. Additionally, the society in general has become more vigilant regarding the workings of corporate management and