Diffusion Essays - Membrane Biology, Cell Biology,

Diffusion 1. a) Bulk movement is the overall movement of a fluid. The molecules all move in the same direction. Diffusion however is the random movement of molecules which usually results in a fairly even distribution. In other words the movement is not guaranteed to move in one direction but the probability that it will move in the lower gradient is greater. Osmosis is similar to diffusion but is differentiated by the membrane's behavior. The cell membrane does allow water to move from higher to lower concentrations but does not allow solutes do that. b) Water potential is the capacity of water to move to a from a region where there is high water potential to low water potential. This action happens without the affect of outside forces. When outside actions due occur and they give water a high potential energy than the water will move to the region where less potential energy is. Hydrostatic pressure is the pressure required to stop water the movement of water. This is a method of measurement. The osmotic potential is the measure of tendency of water to move through a membrane which contains a solution. This occurs when a cell does not allow a hypertonic solution to leave the cell membrane. The cell begins to increase with water but the cell membrane can not release the solution and thus the water potential within the cell increases. This causes the water to no longer enter the cell. c) Hypotonic is less solute to a certain amount of water. Hypertonic is more solute to a certain amount of water. Isotonic is the equal amount of solutes in two different solutions. d) Endocytosis is the inward bulge causes by incoming molecules. Exocytosis is the expelling of a material outside a cell. e) Phagocytosis is the process where the cell obtains solid matter. This is different from the pinocytosis where the cell obtains liquid matter. These both are endocytic processes. Receptor-mediated endocytosis is the process where there are interactions between a material and receptor sites on the cell. In this process the cell accepts the material if it matches with the receptor sites. f) Coated pits are areas which peripheral proteins indent the membrane. This is where the vesicles for certain materials are formed. The vesicle which is formed is called the coated vesicle. g) Plasmodesmata are the links which hold two adjacent cells together. Gap junctions are the channels which allow materials to flow between cells. 2. The concentration gradient is the difference in the density of a material from one region to another region. The concentration gradient affects diffusion by allowing the substance to flow from high concentration to low concentration. The concentration gradient affects osmosis by the same manner it does in diffusion. The cell does not allow the solution to exit the cell when water is entering. This keeps the solution in the cell making the concentration high and thus no further penetration of water. 4. Diffusion is more rapid in gases because they are less dense than liquids. They repel each other more resulting in faster diffusion. Diffusion is greater at higher temperatures because of the greater kinetic energy among the molecules. They push each other more making them less dense. 5. The concentration of the solute is 1%. This happens because a 1% sugar solution is isotonic with that of the 1% sugar solution in the tubes. The 2% sugar solution was increased because the substance was hypertonic. The membrane did not allow the hypertonic solution to exit because the pressure from the hypotonic solution was forcing water in. This later reached an equilibrium when the hypertonic solution was gaining water potential and the water stopped rising. The vice versa happened in the distilled water solution.

Touch Someones Heart With Grateful Quotes

Touch Someones Heart With Grateful Quotes Wally Lambs I cried because I had no shoes. Then I met a man who had no feet, conveys a simple message: count your blessings.Often, you fail to appreciate simple pleasures and little blessings. You keep your eyes peeled for the big prize. A fancy car? Of course, you want it. An exotic vacation in the Far East? Sounds wonderful! A bigger house uptown? Sure. But what about the things you already have? Are you not grateful for that blessing called life?You can go on and on adding items to your wishlist; little realizing the precious seconds you waste by agonizing over unfulfilled dreams. When you see your wealthy neighbor show off his brand new Porsche, you may feel that yours is a life half lived. But instead of focusing on your object of envy, try focusing on the goodness of life. Material desires come and go, what remains with us is our ability to enjoy life and make the most of it. Ambition Is Not Bad, Greed Is It is not wrong to have ambition. By all means, keep your lofty goals in sight. Your ambition can be fueled by your passions, dreams, and desires. But dont fuel your ambition with greed. The hunger for success is not the same as the greed for fame. Greed is a selfish need to achieve ones objectives, even at the cost of others. Ambition propels you to innovate while living by the rules of fair play. Ambition is good for you; greed only makes you less grateful. Learn to Be Grateful As Joseph Addison rightly said, Gratitude is the best attitude. It takes more than humility to be grateful. Gratitude is ingrained into your psyche through social conditioning. Parents and teachers teach kids the magic words: Im sorry, please, thank you, excuse me, and youre welcome in preschool. As you mingle with others in social situations, you learn social etiquette that deems it necessary to express gratitude at appropriate occasions. Are you a Grateful Person? However, mere expressions of gratitude may not reveal whether a person is truly grateful. It could simply be lip service, or politeness, conveying nothing about the persons true feelings. If you are a grateful person, you can convey your appreciation in more than just words. Did your mom help you when you were sick? After you get well, celebrate your good health with your mother. Did your friend lend you the money you needed to set up shop? Repay the loan not only with interest but also with kindness. Did your friend help you get over a breakup? Hug your friend while saying, thanks, and promise to stick together in good and bad times. Make sure to live up to that promise. Express Thanks With Grateful Quotes Why stop at thank you, when you can say more? With grateful quotes, your words will tug at heartstrings. The listener will feel overpowered with the emotion contained in these quotes. Your generous words will win over friends.Richard CarlsonPeople who live the most fulfilling lives are the ones who are always rejoicing at what they have.Anthony RobbinsWhen you are grateful fear disappears and abundance appears.Marcel ProustLet us be grateful to people who make us happy; they are the charming gardeners who make our souls blossom.Nancy Leigh DeMossThe grateful heart that springs forth in joy is not acquired in a moment; it is the fruit of a thousand choices.SenecaNothing is more honorable than a grateful heart.Elizabeth CarterRemember that not to be happy is not to be grateful.Edgar Watson HoweNothing tires a man more than to be grateful all the time.Francois RochefoucauldWe seldom find people ungrateful so long as it is thought we can serve them.John MiltonA grateful mindBy owing owes not, but still pays, at onceIndebted and discharged. Henry Ward BeecherA proud man is seldom a grateful man, for he never thinks he gets as much as he deserves.Robert SouthThe grateful person, being still the most severe exacter of himself, not only confesses but proclaims his debts.George HerbertThou who hast given so much to me, give me one more thing... a grateful heart!Steve MaraboliThose who have the ability to be grateful are the ones who have the ability to achieve greatness.Mary WrightWhen you say thank you it makes me feel like everything is good!Henry ClayCourtesies of a small and trivial character are the ones which strike deepest in the grateful and appreciating heart.Lionel HamptonGratitude is when memory is stored in the heart and not in the mind.Marcel ProustLet us be grateful to people who make us happy; they are the charming gardeners who make our souls blossom.Melody BeattieGratitude unlocks the fullness of life. It turns what we have into enough, and more.Chinese ProverbWhen eating bamboo sprouts, remember the man wh o planted them.†Mary WrightThere is only one way to say thank you and thats just too straight up say, â€Å"Thank you.G. K. ChestertonI would maintain that thanks are the highest form of thought and that gratitude is happiness doubled by wonder.Sarah Ban BreathnachEvery time we remember to say â€Å"thank you†, we experience nothing less than heaven on earth.Albert SchweitzerTrain yourself never to put off the word or action for the expression of gratitude.Benjamin CrumpYour presence today spoke volumes. Thank you all for the support.Jill GriffinLearn to say thank you every time.

IT - Attacking Cryptography Essay Example | Topics and Well Written Essays - 1250 words

IT - Attacking Cryptography - Essay Example Security requires constant and periodic changes to pace up and counter the threats that are ever increasing. Similarly, cryptography also goes with the same approach of upgrading new state of the art encryption algorithms one after another and from safe to the safest, so that it cannot be cracked. Lastly, the future concerns for blow fish encryption algorithm are associated with minimizing the use of S boxes along with less iterative processes along with sub key calculation on the fly. Two fish that is considered to be the next state of the art encryption algorithm after blow fish will be considered as AES final with 128 bit block size and can handle more operations. Two fish incorporates a 16 round structure with additional options for inputs and outputs, as the plain text is converted in to 32 bit words. The inputs incorporates four key words followed by sixteen rounds and each round, two words on the left are utilized as inputs to the function donated by ‘g’ (Stinson and Tavares ). ... S-boxes are dependent on large keys that are more resilient to cryptanalysis (Anderson. n.d). Moreover, permutations are key dependent with a support of diverse operations associated with mathematics that is integrated with XOR and addition (Anderson). For attacking the encrypted files, Charlie can use many attack methods for retrieving the password files stored in the database maintained by ‘keepass’. The plaintext and cipher text methods of attacks incorporates a cryptanalyst that has an access to plaintext and the conforming cipher text and pursues to find association in between the two. Whereas, a cipher text is associated with an attack in which cryptanalyst is accessible to cipher text and do not have access to conforming plaintext. Charlie can use generic ciphers such as Caesar, frequency analysis for cracking the cipher on Alice’s workstation. Moreover, Charlie can also use a plaintext and chosen cipher text attack for retrieving the passwords. This type o f attack incorporates a cryptanalyst that is capable of encrypting a plaintext of choice and examines the results of cipher text. This type of attack is most generic for asymmetric cryptography, as Charlie can gain public key via cryptanalyst. Charlie can also choose cipher text attack that incorporates a cryptanalyst selecting a cipher text that seeks for a similar plaintext. Charlie can decrypt oracle that is a machine for decrypting data without exposure of key. Moreover, Charlie can also execute the attack on public key encryption, as it initiate with a cipher text and seeks for similar matched plaintext data available publically. Charlie can also utilize adaptive attacks (Krawczyk), as these attacks incorporate a cryptanalyst that selects plaintext or cipher text

The Movie Rental Industry of the Future Assignment - 10

The Movie Rental Industry of the Future - Assignment Example It is highly likely that customers will pay per minute for streaming. As a result, it should invest in its streaming services and an online platform (Chapter 3 55). However, it should consider developing features that allow users to view the movies offline. For example, there can be an option for users to download content from the site. Furthermore, industries are being disrupted at an overwhelming pace. As a result, they cannot afford to stick to the present strategy. Instead, it should develop a strategy that is responsive to changes in the market. Â  In order for Netflix to achieve more growth and prosperity in the movie rental industry, it needs to change tack on some things. In addition, it also needs to adopt some new strategies so as to prepare itself for the movie rental industry of the future. Firstly, the organization needs to stop relying on established entertainment houses for content. It should focus on creating its own original content. Although the initial cost of investment will be high, the long-term rewards will be phenomenal. In addition, it will enable it to reduce its operating costs by eliminating the licensing fees paid (Chapter 3 151) Â  Secondly, the organization needs to expand into China, Nigeria, India, and South Africa. The four countries have an established entertainment industry that would be glad to partner with an organization that gives them a platform to reach more consumers. Thirdly, the organization needs to come up with an appropriate pricing plan that enables them to make a profit on their investment but also makes it possible for the price-conscious consumer to buy their service. In addition, it needs to establish different packages for consumers. Â  

The Future of Computer Applications in Biomedicine Annotated Bibliography

The Future of Computer Applications in Biomedicine - Annotated Bibliography Example The authors with reference to the New England Journal of Medicine predict that computer technologies may be used in future to examine the causes for the development of Parkinson’s and epilepsy and in prescribing possible medicine for treating such diseases. Tissue engineering is also another possible development that computer technology is likely to facilitate in the field of biomedical engineering. This article provides an explicit research on this topic given its resourcefulness on the information under investigation. Increasing technological development and integration has led to massive transformation of various sectors of economies that have great impacts on human life. Biomedicine is one sector of great significance that has undergone broad transformation fanned by the speedy advancement of computer based technology. Away from the traditional communication technologies, introduction of computers in biomedicine have led to the transformation of health care procedures and practices. Computers have been of great use in biomedicine especially for the purposes of storing patients’ records, diagnosis and in performing other health related activities (Hung and Joseph 120). Laboratory is one component of heath care facilities that makes great use of computers in testing diseases and complaints as well offering therapies to patients of various diseases. Looking from the past and current transformation in the field of biomedicine, it is focused that this field has a very bright future with compu ter technology that will work to improve and ease health care procedures. According to Hung and Joseph, the recent increase in use of internet is viewed to have significant impact in the future of biomedicine (120). The internet has been very instrumental in enabling the process of data sharing that involve images and other health related information used by health care professionals. Analyzing from the current capability of internet to interlink

The Exposed Problems Of Sexism In The Media Media Essay

The Exposed Problems Of Sexism In The Media Media Essay For many years now the media we are exposed to every day has been filled with gender inequality (sexism) even though we might not always notice it. Gender inequality is a problem we as humans have been facing for quite a few years now and more often than not the media has been part of the problem and not the solution. Problem statement: Does the media promote sexism and outdate views of male/female behaviour? What is media sexism? The Oxford Dictionary of Sociology defines sexism as being the unfair discrimination on the basis of sex. This kind of discrimination tends to operate in favour of men and against women; however the obverse is not entirely unheard of. From this we can assume that the term media sexism refers to discrimination on the basis of gender that we perceive from day to day in the media. As easy as the term may seem to be to grasp, its a much more abstract term in the way that we arent always aware of the sexism that takes place in the media. For example, the percentage of newsreaders covering important news stories that are male dominates the amount of female newsreaders covering important news stories. This is quite subtle and most people dont notice this, whereas the amount of female sex workers seen in the news is much more than the amount of male sex workers seen in the news. Sexism of any kind, including media sexism can occur on many different levels and range from being covert to being outright blatant. Yes the media promotes sexism and sexist behaviour From my point of view, yes, media does promote sexism and sexist behaviour. I say it does promote sexism because women, or to be more specific womens bodies and specific women body parts are used to advertise new products. How many adverts have we seen in magazines where new gadgets are being advertised with half naked woman holding it? Cars, TV, graphics card, cell phone, laptop, etc, are all being promoted and it is being associated with women and their body. The adverts on TV are mostly being advertised by women. And if look at these commercials most of them the women have nothing to do with the product that is being advertised, one of the example is the advert for fruit juice where woman were being splashed with different fruit and fruit juice. If we also look at the computer games and their characters we can clearly that its promoting sexism. As they make the women characters look very attractive and expose their bodies. This is not the only place where media promotes sexism, if have we look at the movies and series, we can see that the men are the ones playing the important roles in the movie and women are there just as the hot sex icon, we can take Transformers for example, where Megan Fox who is the one of the main characters in Transformers plays a sex icon in the movie. If we remember when the Transformers 1 and 2 came out many men went with their friends to cinemas to watch the movie not only for its great action and effects but went to go watch it to see Megan Fox. I can remember many of my friends talking of going to watch it just to see her. This clearly shows that women, in this case Megan Fox, are used to advertise the movie so that it can sell better. We can clearly see that media does promote sexism after we have given and discussed different fields of media where media sexism is being used. This is not good as there are many disadvantages from advertising women in such a way. Women are being used as objects. This has influence on mens mind, as it changes the way they view women and how they treat women in general. No The media does not promote sexism and sexist behaviour For many years the media has been dominated by male presenters, reporters, writers etc. Women were seen as inferior to men and their voices were not heard in the media. However, this has now come to pass According to the Global Media Monitoring Project (GMMP), a global survey that is taken every five years, in 2005, 57% of all television news presenters were female and throughout the world women are more frequently becoming strongly represented in newsrooms. These figures also remained stable during the 2010 survey. It showed that while men were more likely to report domestic news stories (70%), women were much more likely to report international news (61%). Also worth mentioning is that 83% of news stories focusing on women were also presented by female journalists. Their findings from 1995-2010 for reporting and presenting the news read as following: 1995 2000 2005 2010 %Men %Women %Men %Women %Men %Women %Men %Stories presented on TV and Radio 51 49 49 51 53 47 49 As can be seen from the above table taken from the GMMP 2010, the percentage of males and females presenting news stories on television and radio have been rather stable and more importantly, equal for the last 20 years. This is a good example of how gender inequality and stereotypes are starting to dissipate from the media we are exposed to in everyday life. This change was brought about thanks to various different approaches to the issue of gender equality in the media that include, but are not limited to: Bringing gender balance to the institution of media; Creating alternative media for women to tell their stories and to let their voice be heard; Empowering and hiring female journalists; These approaches arent mutually exclusive. They all play important roles in gender equality in the media today as well as the fair portrayal of females in the media. In conclusion, males and females are slowly but surely starting to enter a balance when it comes to equality in the media. The days of gender stereotypes are drawing to a close and we welcome female journalists and newsreaders into the previously male dominated field where they prove themselves to be equals to their male counterparts. How the media portrays men and women and the effects thereof Through sexism in the media, stereotypes of how men and women should act and the roles they should adhere to are developed. The media has the power to influence the masses and by communicating sexist ideas the media is creating stereotypes by which they expect the public to conform to. Adverting campaigns such as the Bar One Man launched by Bar One and Windhoeks Always Keep it Real advertising campaigns are typical examples of the media dictating how men should act. Women used for advertising and television programmes are most times abnormally thin and skinny. Women viewing this believe that this is the norm and are driven to unhealthy diets and eating disorders in order to obtain what the media has portrayed as the ideal body. Young girls and women can suffer from anorexia and bulimia while trying to conform to what the media has portrayed as the perfect body size. Men are portrayed as being very strong, masculine and muscular. Men spend hours at the gym trying to obtain what has been presented to them as the perfect body and sometimes turn to supplement such as steroids for help which damage ones health. As a result of not achieving the perfect body, people can suffer from anxiety, depression and a range of inner conflicting emotions. Men and women are glamorised and portrayed as completely flawless in the media, this prompts everyday people to waste large amounts of money on cosmetics so that they may conform to this flawless image. Women spend money on expensive make-up, perfumes, clothes, jewellery and accessories while men are prompted to buy colognes, after-shaves and other costly cosmetic products in order to make themselves look appealing to the opposite sex. Some people would go as far as to pay to have cosmetic surgery done to improve their bodies. In the media women are presented as sex objects to be used by men. This leads to decay in the self esteem of women as they begin to believe that the only way to get attention from men is to present themselves as sex objects. This also has a negative impact on men as they loose respect for women and are led to believe that there are many beautiful women in the world that are easy and willing sex partners. In the media men are often seen doing something stupid or potentially dangerous to gain the attention and approval of a woman. This is seen in a lot of First for Women advertisements on the television and in magazines. This encourages men to act recklessly to get a womans attention. The way the media portrays men and women is not an accurate representation of reality, but a false portrayal of how the media expects men and women to be. The way media portrays men and women creates an extremely high expectation of reality. People become obsessive about meeting that expectation and damage their health and emotions in the process. Men and women face disappointment when the opposite sex does not live up to the high expectation the media has created of them. Using sexism to help promote or sell products does not always work in the favour of the companies advertising. Sexist advertisements that appear in the media can often annoy and enrage the gender that is being exploited or ridiculed in order to promote the product. This causes negative feelings and emotions towards that advertisement. By using sexism in advertising a company can gain the attention of its audience but can also leave people feeling angered and opposed to buying that specific product. Group opinion After discussing the topic and considering all the information we gathered throughout this assignment we as a group decided that the media definitely promotes sexism and sexist behaviour particularly in favour of males. The female body is often being exploited to sell products; females are less frequently used to present important news and less than 30% of journalists covering important stories worldwide are female (GMMP, 2011). Hopefully in coming years this will become a thing of the past, but for the time being media sexism is a very real problem that we face. In conclusion It would appear that the media is still representing females as being inferior to males or at least to a certain degree. Despite this however, females are starting to fight back and are proving to be worthy equals to their male counterparts. Organisations such as the GMMP are trying to ensure gender equality in the media and are slowly, but surely achieving their goal. This is a mindset that might take many years to get out of, but it is a necessary change that will have to take place if we are to truly progress as a species. In our opinion, males and females are equal and it should be portrayed that way in the media and in any walks of life.

MBA Admissions Essays - Major Accomplishments -- MBA College Admission

I had practiced it before, but this time it was for real. Well, as real as a college mock trial tournament can get. I objected, pointed, and did squat thrusts during 10-minute breaks. During the trial, I paused for a few seconds of silence and methodically tied up the loose ends of my closing monologue. My mock trial team sat quietly for a couple of minutes until the judges offered some feedback and tabulated the scores. Unfortunately, we lost in a landslide and would not be moving on to the final round of competition. Before our team departed from Ithaca, however, we still had to sit through closing ceremonies, where team and individual awards would be distributed. We arrived to the function with our head between our tales, but when they read the award for best mock trial attorney, my name was called. I was shocked and utterly ecstatic. I was even surprised that it wasn't a run of the mill paper award I had won, but actually a wooden plaque with some official looking carvings. It wa sn't an Academy award or Nobel Prize, but for someone who had practiced relentlessly for months, it su...