Selectively Permeable Definition and Examples

Selectively Permeable Definition and Examples Selectively permeable means a membrane allows the passage of some molecules  or ions and inhibits the passage of others. The capacity to filter molecular transport in this manner is called selective permeability. Selective Permeability Versus Semipermeability Both semipermeable membranes and selectively permeable membranes regulate the transport of materials so that some particles pass through while others cant cross. Some texts use terns selectively permeable and semipermeable interchangeably, but they dont mean exactly the same thing. A semipermeable membrane is like a filter that allows particles to pass or not according to size, solubility, electrical charge, or other chemical or physical property. The passive transport processes of osmosis and diffusion permit transport across semipermeable membranes. A selectively permeable membrane chooses which molecules are allowed to pass based on specific criteria (e.g., molecular geometry). This facilitated or active transport  may require energy. Semipermeability can apply to both natural and synthetic materials. In addition to membranes, fibers may also be semipermeable. While selective permeability generally refers to polymers, other materials may be considered to be semipermeable. For example, a window screen is a semipermeable barrier that permits the flow of air but limits the transit of insects. Example of a Selectively Permeable Membrane The lipid bilayer of the cell membrane is an excellent example of a membrane which is both semipermeable and selectively permeable. Phospholipids in the bilayer are arranged such that the hydrophilic phosphate heads of each molecule are on the surface, exposed to the aqueous or watery environment inside and outside of cells. The hydrophobic fatty acid tails are hidden inside the membrane. The phospholipid arrangement makes the bilayer semipermeable. It allows the passage of small, uncharged solutes. Small lipid-soluble molecules can pass through the hydrophilic core of the layer, such hormones, and fat-soluble vitamins. Water passes through the semipermeable membrane via osmosis. Molecules of oxygen and carbon dioxide pass through the membrane via diffusion. However, polar molecules cannot easily pass through the lipid bilayer. They can reach the hydrophobic surface, but cant pass through the lipid layer to the other side of the membrane. Small ions face a similar problem because of their electrical charge. This is where selective permeability comes into play. Transmembrane proteins form channels that permit the passage of sodium, calcium, potassium, and chloride ions. Polar molecules can bind to surface proteins, causing a change in the configuration of the surface  and gaining them passage. Transport proteins move molecules and ions via facilitated diffusion, which does not require energy. Large molecules generally dont cross the lipid bilayer. There are special exceptions. In some cases, integral membrane proteins allow passage. In other cases, active transport is required. Here, energy is supplied in the form of adenosine triphosphate (ATP) for vesicular transport. A lipid bilayer vesicle forms around the large particle and fuses with the plasma membrane to either allow the molecule into or out of a cell. In exocytosis, the contents of the vesicle open to the outside of the cell membrane. In endocytosis, a large particle is taken into the cell. In addition to the cellular membrane, another example of a selectively permeable membrane is the inner membrane of an egg.

How To Write An Essay About Perfect Boss, with Outline

How To Write An Essay About Perfect Boss, with Outline How to Write an Essay about Perfect Boss (Writing Guide) How to start an essay about perfect boss How to write thesis for an essay  about perfect boss How to write body pargraphs for an essay about perfect boss How to conclude an essay about  perfect boss Outline example Topic Actuality Essay writing takes into consideration a few basics that make a paper stand out. In this case, the topic to focus on is The Perfect Boss. It deals with the characteristics typically associated with a perfect boss that is, an employees superior at the place of work. It elaborates on the behaviors of a boss whom an employee or junior person can want to emulate. A boss is someone who portrays power and influence. The topic and general paper should paint or portray this fact effectively. How to Start an Essay about Perfect Boss To write an essay about a perfect boss, one will follow a few steps. The author will first define what a boss is. There are different types of bosses at different places of work. The definition has to capture the fact that a boss mainly relates to the place of work. The introduction should also clarify that no boss is perfect, just as no human being is perfect. All employers have faults. However, a perfect boss is one who meets most of the expected behaviors of a good manager or employer. The expectations are to be pointed out in the subsequent paragraphs. How to Write Thesis for an Essay about Perfect Boss Given that the topic is already identified and the extent of the content determined, the next thing one has to do is identify and clearly point out the thesis statement. A thesis statement, the last sentence found in the introductory paragraph, is a short statement that illustrates the position that the writer intends to pass across. The thesis statement should give the reader a hint about the characteristics of a perfect boss. For instance, the thesis statement should summarize the main features of a perfect boss such as honesty, being a role model for employees, hardworking, understanding, smart, among others. Alternatively, the thesis statement can also highlight the summary of what a perfect boss should be. For instance, it can read, a perfect boss will not only be hard working, strict, and act as a role model to employees, but will also show deep and sincere concern for employees. How to Write Body Paragraphs for an Essay about Perfect Boss The body of the essay is to be about three paragraphs. The first paragraph will enumerate a few examples of bosses who have been acknowledged by employees as perfect bosses. Examples should be drawn from a variety of sources, industries, and sectors. For instance, the essay will mention globally recognized and feted managers and directors. Typical examples of perfect bosses to be emphasized include Mark Zuckerberg, the Chief Executive Officer of Facebook, among many others. The first paragraph can also recognize less known, but revolutionary individuals who have played a leading role in the success of their industries and sectors through role modeling. The second paragraph should elaborate the fact that a boss is a manager hence his or her management style determines whether or not he becomes a perfect boss. It will draw attention to the main features of an employer or manager who can be considered a perfect boss. Some of the key features to be pointed out include leadership by example, where the boss sets high ethical standards and follows established rules and norms, and motivates employees to follow the same rule. At this point, the essay should point out how the leaders behavior and that of employees relate. Another characteristic can include effective communication. The writer should elaborate that an effective boss communicates in a timely and clear manner. Transparency, valuing employees, deep knowledge, respect, and sensitivity are other aspects that can be discussed in detail. The essay should also accentuate that a perfect boss recognizes the effort and makes the employees feel appreciated. Positive reinforcement works well on employees and encourages them to continue with good performance.   The fact that a perfect boss gives feedback should also be underscored. In this regard, the essay should state that feedback should be prompt and should be given with a positive attitude. It should be encouraging, and meant to correct rather than rebuke. A great boss, the essay should note, has to sit down with employees and discuss with them. Then he or she has to set clear expectations and motivate employees to attain the expectations. The third paragraph can highlight how the relationship between employees and their boss directly affects the performance of an organization. It will also state the fact that perfect bosses are loved by employees, they are self-motivated, and they yield results. The last part of the third paragraph will explain that a perfect boss inspires other bosses or managers at similar or higher levels to emulate him or her. How to conclude an essay about perfect boss A perfect essay is one with a short but clear conclusion that reiterates the features of a perfect boss. The concluding paragraph will also note the link between the performance of an organization and the management style. Outline Sample Introduction What is a perfect boss? Thesis statement   Nobody is perfect Body Examples of perfect bosses Effect of management styles Features of perfect bosses Impact of the relationship between employees and bosses on performance Conclusion Reiteration of main ideas

The Desighn evenet managment Assignment Example | Topics and Well Written Essays - 1500 words

The Desighn evenet managment - Assignment Example Organization of events strongly affects society as a whole. In some countries, this is a serious industry, bringing the state many billions in taxes. You can use it to attract a lot of tourists (such as carnivals in Rio de Janeiro or Venice is visited by hundreds of thousands of people), it becomes a significant source of income for local budgets. Conferences and exhibitions helps the emergence of business contacts and thus spur economic development. has long been an integral part of other economic sectors: hospitality, tourism, show business; some of the functions on the organization of activities was assigned to the sales offices, professional associations (Supovitz, 2005, p.45). This hindered the development of event-management as a distinct form of activity. Now in organizing activities were professional associations, there are specialized literature, certification programs in this area can get a higher education. Gradually the organization of events is becoming recognized industry with its technology, market players, legends and traditions. One of the factors that affect the strategic decision-making is opportunity cost. This is because when someone makes a choice, they will lose the chance of making another choice. For instance if a company decides to make advertisement on the radio, they may not have the opportunity of making another advertisement on the television because of budgetary restrictions. If a company asks the sales staff to look for new clients, they may as well forget about serving the existing customers (Boag & Cuskelly, 2011, p.67). Opportunity cost also affected the final event design pitch because it was the best option so far. Another factor that affects strategic decision-making is the effect on resources. When companies compute their profit benefit from probable decision, they must also consider the general impact on production, human resources, sales and the staff. If a certain product within the

Employment Law Essay Example | Topics and Well Written Essays - 750 words

Employment Law - Essay Example Summary Based on the information availed from this organization we get to know that the employer does not have a plan to deal with employees with different conditions. As a result, the employer must implement certain recommendations in line with organizational policy and management. One of the requirements that should be implemented is that the employee with AIDS should be recognized as disabled. Since according to the ADA act, disability cases are assessed on a case to case basis and this should include the employee suffering from AIDS. As a recommendation the employee suffering from AIDS should be accommodated according to the provisions of the ADA act (Goren, 2010). Moreover, the employer should identify with its employees that discrimination is not allowed within the workplace. As a result, the employer in this case should adhere to the provisions of the ADA and not to conduct HIV/AIDS testing at the workplace currently or in the future. In the process of preventing job disruptio n, the employer should come up with a strict adherence policy that allows all co-workers to work together irrespective of their medical condition (Goren, 2010). Apart from these recommendations, the employer in this case should come up with organizational policies that are meant to deal with these issues. One of the policy implementation points is to come up with a policy that allows for hiring of all kinds of employees and implementation of the ADA act. The employer should also implement a policy that allows all employees to learn all laws and policies that deal with workplace employment. This would assist the company to implement policies concerning disability within the company. Moreover, the company should come with a policy whereby co-workers are empowered with education concerning illnesses and disabilities. This policy will enable company employees to understand various issues concerning disabilities and make them more tolerant in interacting with either ill or disable patien ts (Blanck, 2009). The implementation of a non-discrimination policy for employees will assist in boosting the work and make it easy for supervisors to work with other employees. A non-discrimination policy will also greatly assist employees and the employer in respecting the rights of all workers in the wider scheme of implementing equal right as envisaged in different laws and regulations. The best plan to deal with these issues that have arisen in the workplace is to make use of employee training. The training plan will look into ways of ensuring scientific information is disseminated in the office and employees do not necessarily stigmatize other workers. The training plan will focus of risk assessment at the office and how to control exposure unto other employees in the company (Goren, 2010). Moreover, training should be provided on how to handle employees with AIDS in terms of work assignments and proper working conditions. Most AIDS afflicted individuals suffer greatly from s tigma and thus training will create an easy atmosphere of acceptance and work continuation (Blanck, 2009). Above all the training program is supposed to assure AIDS afflicted employees are guaranteed of work continuation and rights like all other employees. Training of employees on the risks, facts and information concerning AIDS gives a better

Championship Manager Essay Example for Free

Championship Manager Essay Paul and Mark started work on Championship Manager 97/98 in early 1997. One of the greatest quotes ever came from this Oh thisll be easy itll only take a couple of weeks, said Paul, the eternal optimist. It took a solid ten months to get it together and released and that was just the English language version. The Championship Manager 2 engine was brought to its outer limits as nine leagues were combined with the possibility of running three simultaneously almost every part of the game needed to be modified and many improvements were made. A database of some 20000 players and 2500 teams was put together with researchers helping out from all corners of the globe. This final version of Championship Manager 2, released 31st October 1997 at an update price, went straight to number one of the all formats chart and remained in the top 20 for many many months. In the meantime, Oliver, who had taken a well earned rest after 18 months solid work on Championship Manager 2, started to conceive the first ideas for Championship Manager 3. The game would once again be totally re-written. In March 1997, Oliver and new staff member Marc Vaughan launched themselves into the Championship Manager 3 project. After a lengthy three months of interviewing, the right people were found to work on Championship Manager 3. With the team assembled, work on Championship Manager 3 steamed ahead and all involved worked hard to make it into a great game. The game was (finally) released on March 26th 1999 and made history as it was the fastest selling PC Game in the UK of all time shifting over 55,000 units in its first. Championship Manager 3 continued to sell well staying at the top spot of the all formats for 3 weeks and has been top of the PC charts for 11 weeks in total since release. Three foreign language versions of Championship Manager 3 were released in May 1999. The languages included were Italian, French and Portuguese and has proved popular in all these countries as well as all the other countries where it has been distributed.

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Financiering van de Pleegzorg; De gehele Jeugdzorg, waar Jeugdhulp Friesland en dus Pleegzorg onder valt wordt gesubsidieerd door de overheid. Dit valt onder de gezondheidszorg, per deel van Jeugdhulp is er een budget die wordt ingezet om iedereen te helpen. Als voorbeeld van een activiteit heb ik de reiskostenvergoeding van stagiaires genomen, stagiaires kunnen de gemaakte kosten declareren bij de organisatie. Deze prijs is opgebouwd uit de gemaakte kilometers en welke prijs daaraan verbonden zit. Hoe je reist is ook van invloed op de prijs, als je week-ov hebt krijg je niet betaald omdat jijzelf dan gratis kan reizen. Ieder pleeggezin ontvangt pleegoudervergoeding, deze vergoeding is maandelijks en is bedoeld voor het kind. Hiervan moeten ouders dingen als kleding en bijvoorbeeld slaapspullen. De vergoeding hangt af van de leeftijd van het kind, hieronder is een tabel bijgevoegd waarin de basisbedragen voor elke leeftijdscategorie zijn omschreven. Basisbedragen van de pleegzorg per jeugdige per 1 januari 2013. Leeftijdscategorie Bedrag per maand/per dag 0 t/m 8 jaar â‚ ¬ 532/17,50 9 t/m 11 jaar â‚ ¬ 538/17,70 12 t/m 15 jaar â‚ ¬ 586/19,28 16 t/m 17 jaar â‚ ¬ 647/21,28 18 jaar en ouder â‚ ¬ 654/21,51 (Pleegzorg Nederland, 2013) Privacy: De privacyregels van Jeugdhulp Friesland staan genoteerd onder de volgende categorieà «n: ï  ¶ Informatie verzamelen en vastleggen ï  ¶ Het recht om gegevens in te zien ï  ¶ Het uitgeven van informatie aan andere personen ï  ¶ Het bewaren en vernietigen van gegevens Informatie verzamelen en vastleggen: Alle informatie over een clià «nt wordt vastgelegd in een dossier, in dit dossier staan alle standaardgegevens zoals naam, adres en geboortedatum. De informatie die bij Pleegzorg binnenkomt is afkomstig van ouders/verzorgers ... ...eegzorg bevorderen en in de belangen van pleegouders en –kinderen voorzien. (Jeugdhulp Friesland, 2014) Ook heb je de Nederlandse Vereniging voor Pleeggezinnen (NVP), de NVP is een landelijke, onafhankelijke vereniging van en voor pleegouders. De NVP zet zich in voor de belangen van pleegzorg, ze willen de kwaliteit van pleegzorg in Nederland verbeteren. Dit doen ze door middel van ondersteuning, advies en belangenbehartiging voor de pleeggezinnen. (Jeugdhulp Friesland, 2014) Alle partijen binnen Jeugdhulp Friesland communiceren met elkaar, de Raad van Bestuur staat bovenaan en pleegt overleg met de Controller en de Regiodirecteur. Alles wat naar de medewerkers moet worden doorgestuurd wordt door de Regiodirecteur geregeld, deze zorgt ervoor dat de wensen van de Raad van Bestuur door gegeven worden aan de medewerkers. Voor een communicatieoverzicht: Zie bijlage

Ch 9 Criminal Justice Administration

1)What factors contribute to the correctional populations? What impact do drug laws have on them? a. Truth-in-sentencing laws have contributed to the increase as well as failure to rehabilitate. The increase and crack down on drug related laws have contributed a significant portion of the population. 2)What are some of the major administrative positions within a prison system? a. Some of the major administrative positions are prison director, public affairs coordinator, legislative liason, legal advisors, internal affairs representative, health care professionals, correctional program professionals, and human management. )How do supermax prisons operate differently from other prisons? What concearns have been raised concerning the alleged effects on inmates, constitutionality, and public safety. a. Supermax prisons operate differently in the way they have to secure the prison and prisoner, and house them in solitary cells. Concearns that have been raised are things like the condition of confinement, there is no safety cushion provided these criminals escape, psychological harm from the way they are housed, and medical conditions. )What are at least five of the major U. S. Supreme Court decisions affording rights to prisoners? a. Ruffun v. Commonweath, Turner v. Safley, Cooper V. Pate, Johnson V. Avery, and Bounds V. Smith are all cases affording rights to prisoners. 5) When and how did such decisions serve to end the hands-off doctrine? a. They started in 1871 and they served to end the doctrine by proving that inmates should not entirely be derived from the constitution. )What is a direct supervision jail, and how does it differ in the design and function from traditional jails? a. A direct supervision jail is a new face on the old way of jails. It differs by physical environment, separating officer from inmate, allowing officers to have a direct line of sight, and softer furniture. 7)Why was the Prison Litigation Reform Act enacted, and has it made an impact? a. It was enacted to provide resoutions for prison condition lawsuits and discourage abuse.It has made an impact by reducing inmate petitions. 8)In what major ways do jails differ from prisons in their organization and administration? Assist with inmate reentry back into the community? a. They differ mainly through who looks over them. Jails serve as agaents of change and have goals for assisting in reentry. 9)What are the primary functions of a jail administrator? a. They are law enforcers. 10)What are the advantages accrue to a corrections facility if it is accreditited? a.Advantages are having state of the art procedure, improving morale and professionalism and much more. 11)What are the various types of probation systems administered in the united states? Describe each. a. Juvenile which monitors juveniles on state municipal or county level, Municipal which is independent and is administered by the lower courts, county which functions under state law, state which is centralized and provides service throughout the state, state combined which is both probation and parole, and federal which is administered by the federal courts. 2)Should Probation services be placed within the judicial or executive branch of government? Defend your answer a. They should be placed with executive because they are in charge of carrying out the laws have to see who follows them or not. 13)What are the two basic models of parole administration? a. The two basic models of parole administration are the independent model and the consolidated model.