Aging as a Genetic Process in essays

Aging as a Genetic Process in essays There are several theories on aging in humans due to genetics. There are four main theories involving genetics and these are the wear and tear theory, the free radical theory, cross-linking theory and somatic mutation theory. Aging is defined as The process of growing old or maturing. Most of these theories follow that though some sort of damage to the DNA other parts of the cell, the cell dies with leads to the human body to age. These theories are not all proved to be correct some people believe that some are better then others as there is no known reason for aging in genetics. The cross-linked theory of aging, this theory follows the basis of that with age, the proteins in our body, our DNA and other structural molecules in our cells develop over time inappropriate attachments or a more appropriate name cross-linked. These bonds can inhibit protein enzymes breaking them down so these damaged (cross-linked) proteins stick around. As they are in the cell and cannot be broken down, they can then cause problems and therefore they can lead to cell damage, which can lead to aging. For example cross-linking of the protein collagen ahs been shown to cause wrinkles which is a common sign of aging. If cross-linking occurs in the DNA, then when the DNA is used to produce proteins and other things it will produce the wrong ones or be deleted which will cause aging too. This theory however is not very favoured as the direct physical (experimental) evidence at this time is not very conclusive that this is the primary cause of aging. The wear and tear theory of aging suggests however that the due to years of damage to cells, tissues and organs, which wears them out and eventually, kills them. This can be especially be seen in the liver fro damage due to alcohol. On a DNA level, it sustains damage from a wide range of toxins, ultraviolet light and radiation. DNA can be repaired but not all can be repaired or sometimes the repair c ...

Battle of Issus Essay Example for Free

Battle of Issus Essay The Battle of Issus Sometime around 310 BCE an artist by the name of Philoxenus of Eretria created a mosaic (creating images with an assemblage of small pieces of colored material) of the Battle of Issus that has long been considered one of the greatest artworks of antiquity. Found at the House of the Faun in Pompeii in 1831 the mosaic is composed of about one and a half million tiny individual colored tiles called tesserae. The artwork illustrates the battle in which invading troops led by Alexander of Macedonia defeated the army led by King Darius III of Persia. When looking at the piece the viewer cannot help but be impressed by the psychological intensity of the drama taking place. On the Persian side of the piece the viewer’s eye is immediately drawn to the prominent figure of Darius shown in his chariot. A look of pure desperation, and perhaps even fear, is etched in Darius’ face as victory slips through his hands. As his steely eyed charioteer turns to rein his horses for a fast retreat to safety Darius stretches out his hand toward Alexander either in disbelief that Alexander has beaten him, or perhaps in grief over the death of one of his â€Å"immortals†. Around him are his Persian soldiers who mill in confusion in the background, their faces filled with fear and determination. On the same side, there are two other figures that are quite notable and demonstrate the artist’s technical mastery. The first is the artist’s depiction of the rearing horse right below Darius which is seen in a three-quarter rear view. The rider, his terror evident upon his face, glances back at the battle as he attempts to control his horse. This kind of depiction is very impressive and is much more accomplished then other similar attempts such as the shading in the Pella mosaic or the Vergina mural (Kleiner 142). The second, perhaps even more impressive, is the artist’s portrayal of the Persian in the foreground who has fallen onto the ground and raises a small shield in a pathetic attempt to prevent being trampled. The man’s terrified face is reflected on the polished surface of the shield moments before the chariot crushes him under its ornate wheels. On the Macedonian side of things the viewer’s eye is of course drawn to Alexander. This portrait of Alexander is one of his most famous. His breastplate depicts Medusa the Gorgon. He leads the charge into battle on his horse Bucephalus, without even a helmet to protect him, and maintains an aura of unshaken confidence in direct contrast to Darius. As Alexander surges forward in a supreme effort he drives his spear straight through one of Darius’s trusted â€Å"immortals† who puts himself between him and the King of Persia. As the impaled Persian collapses to the ground, Alexander fixes his gaze upon Darius in utter hatred. Although the deteriorated condition of the mosaic makes it difficult to distinguish much on the Macedonian side a cavalryman wearing a Boeotian helmet with a golden wreath can been seen behind Alexander. Looking at the mosaic as a whole there are a few important details that grab ones attention. First is the fact that the landscape is very minimal, only one gnarled tree trunk appearing in the background and a few discarded weapons and rocks in the foreground. Secondly, everywhere in the scene men, animals, and weapons cast shadows on the ground. This unusual attention to detail is what enhances the intensity of the piece and gives it an aspect of realism that truly shows the horror and confusion of battle. The viewer cannot help but be drawn into the conflict and become a part of the drama as it unfolds. To me this mosaic is not only a truly great piece of art but also has furthered my understanding of Roman artwork, Macedonian warfare and the emotion in Hellenistic-styled mosaics. It is easy to understand how Roman author and natural philosopher Pliny the Elder concluded that Philoxenus’ depiction of the Battle of Issus was â€Å"inferior to none† (Kleiner 142). Battle of Issus. (2018, Oct 25).

Business - Organizational Communication Essay Example | Topics and Well Written Essays - 2000 words

Business - Organizational Communication - Essay Example Organizational communication takes place horizontally, downward and upward. Downward communication takes place from executive and managerial levels to the other staff through formal channels like organizational charts, policy manuals and rules and regulations. Upward communication takes place from the members of staff to the managers, and mainly, inform of a request or a complaint. Horizontal communication flows among colleagues, especially in a meeting, where they share information, discuss issues of common interest and resolve problems. The paragraphs below discuss the importance of organizational change and issues involved by managers in creating effective organizational communication. Organizational communication is highly essential because it improves the relationship between employees and managers in an organization. This is because; it becomes extremely hard for employees to perform their work effectively without proper communication from the manager. The manager should use th e correct channels of communication, and know what he expects from the communication channel used. Indeed, most management issues arise in organizations due to ineffective communication. Proper communication system minimizes misunderstanding and misrepresentation (Smith & Turner, 1995). Organizational communication is a key tool for motivation among the employees since it improves the employees’ morale. Lack of communication or inappropriate communication in every organization causes conflicts between the employees and managers. Inappropriate communication issue is one of the major causes of conflict in the work places and eventually leads to low morale for the employees. Therefore, managers should state clearly to employees on what should be done, how perfectly it should be done, and what can be done to improve the performance. The manager can do this by clarifying to the employees the relationship between personal and company’s objectives, and incorporate the interes t of the two. Effective communication within an organization leads to productivity increase. Proper communication enhances good human relation in every company because it encourages suggestions and ideas from workers and employees. Importantly, the organization is encouraged to implement the suggestions, and this increases production at a remarkably low cost. Organizational communication enables employees to submit their comments, work reports, suggestions and grievances to the management. Speedy and effective communication is highly essential because procedures and policies should be clear to avoid confusion, delays and misunderstandings, and; therefore, harmony is established in all departments, and among all people. Written communication is better in an organization than oral communication. Communication in written form should be clear and concise to avoid misinterpretation. Written communication can be used for future reference because it provides a permanent record and gives a chance to employees on writing down their suggestions and comments. Organizational communication is essential since it allows rationalization. Simply, the management clarifies and explains instructions in a way that employees can comprehend, using downward communication. On the other hand, upward communication in an organization enables workers to air their views to the management. If an employee identifies a problem in motivation, for instance, he or she may use upward

Assignment 11 Essay Example | Topics and Well Written Essays - 500 words - 1

Assignment 11 - Essay Example The article gives the reader an opportunity to appreciate the role and impact of action research within the educational setting. In essence, the author captures the processes involved in action research in relation to maximizing the benefits. In addition, this is a research process that has the capacity to revitalize the entire learning process in most academic spheres. In addition to adding value to the learning process, action research creates critical grounds to reflect and evaluate teaching approaches (Arnold, 2008). It is therefore a necessary tool that can be used to support various initiatives by individual teachers, teaching communities, and organizations. Essentially, one cannot ignore the nature of data collection procedures used in action research. The author sheds light on the necessary aspects that one should consider when conducting action research (Arnold, 2008). It is an invaluable tool that offers a range of opportunities for the learners and the teachers. Essentially, when one is capable of conducting a study within their field makes it possible to address issues that are facing a system. The qualitative techniques in use when conducting action research set the stage for solving problems and enhancing practice. The reader further gets the details of how action research can enable the researcher to interpret as well as formulate acceptable solutions and practical steps towards local problems. One of the benefits that come with such an approach includes the ability to seek viable and realistic explanations to some of the general problems facing an education system. Some of the realities that the researcher faces on a day to day basis are grounds for gathering factual data. Due to this, the researcher does not have the luxury of following laid out procedures. Such a position calls for innovative data collection techniques that will focus on the importance of the data at hand (Arnold, 2008). The emphasis on the significance of

A Midsummer Night’s Dream Essay: The Perspective of Theseus

A Midsummer Night's Dream:  The Perspective of Theseus  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚      In his play, A Midsummer Night's Dream, Shakespeare clearly establishes the feelings of Theseus with respect to love and reason.   Theseus distrusts the nature of love and its effect on people as he states in the following passage: I never may believe these antic fables or these fairy toys. Lovers and madmen have such seething brains, Such shaping fantasies, that apprehend More than cool reason ever comprehends. The lunatic, the lover, and the poet Are of imagination all compact. One sees more devils than vast hell can hold: That is the madman. The lover, all as frantic Sees Helen's beauty in a brow of Egypt. The poet's eye, in a fine frenzy rolling, Doth glance from heaven to earth, from earth to heaven; And as imagination bodies forth The forms of things unknown, the poet's pen Turns them to shapes, and gives to airy nothing A local habitation and a name. Such tricks hath strong imagination That, if it would but apprehend some joy, It comprehends some bringer of that joy; Or in the night, imagining some fear, How easy is a bush supposed a bear (V, i, 3-22)!    Theseus expresses his doubt in the verisimilitude of the lover's recount of their night in the forest. He says that he has no faith in the ravings of lovers or poets, as they are as likely as madmen are to be divorced from reason. Coming, as it does, after the resolution of the lovers' dilemma, this monologue serves to dismiss most of the play a hallucinatory imaginings. Theseus is the voice of reason and authority, but he bows ... ...rs† (V, I, 28-30! Instead of â€Å"Go and fresh days of love accompany your hearts!† (V, I, 28-30) 2.  Ã‚  Ã‚  Ã‚  Ã‚   Your first paragraph seems to be your first point instead of your introduction.   Your first sentence also appears to be your thesis statement.   Your introduction should incorporate all of the points of your paper.   You are introducing all of them.   So, lengthen your introduction and then for your thesis statement you need to list all of the points that you discuss. In his play, A Midsummer Night's Dream, Shakespeare clearly establishes the feelings of Theseus with respect to love, reason. 3.  Ã‚  Ã‚  Ã‚  Ã‚   When quoting lengthy passages from a Shakespearean play or a poem, you should keep the line formation.   Begin a new line when the author of the passage begins a new line.         

Advantages Due to Hiring Maid

The maid is a system that involve non-local who is not from our family members who work at our home. According to Zuhaila (2012) the article in NSTP dated March 11. â€Å"Some families say their household will just not be able to function well without a maid†. So with the existence of a maid, it not only brought many benefits for the community but it can ease the burden of parental in order to taking care the home, children and others, especially for careers parents.Although many people have negative perception of hiring maid, I believe that hiring maid is important due to several advantages. The first advantage is it will cut the cost of sending children to nursery. As we know that the cost of sending children to nursery is expensive nowadays. Not only the nursery, hired a babysitter just for a few hours will cost much higher than hiring a maid. According to Kwa on her speech â€Å"Now days, a fee for a monthly babysitter is around RM750 and above, and the cost will increase depend on how many children in the house† (Kwa, The Star, 2012).On the other hand, parents can reduce the times that wasted of sending and fetching children from the nursery. Because of that, hiring a maid can take care of children when parents go to work. Parents also do not worry about the payment every month because our government is standardizing the fee that parents need to pay the maid. The second advantage is it will reduce the burden of doing the house chores. As we know, as a parent their needs to taking care about their career and their duty of doing house chores.Because of that, many locals are waiting to hire maids again as to meet their needs (Raja Zulkeply Dahlan, 2012). In addition, the maid is also a savior for parents who are experiencing stress over the situation in the workplace and home. For a career parents, sometimes the stress at the workplace will be carried away to the house and if at home, the condition not very smooth it will give more pressure on t he parents. Therefore, the extra time will help parents to relax which also increases their productivity at workplace.The third advantage is it will encourage parents to spend more time with their family members. As we know, maid can help doing house chores and allow parents to spend quality time with their families’ member. Because of that, parents will have a valuable period of time to spend their times with families’ member. According to Orlandoyts (2005) â€Å"maid rid you and your daily chores allowing you to spend quality time with your family†. For example, parents can have a picnic on a weekend or bring their children to shopping.In addition, parents can give love and paying more attention to their children. Parents who have time in a long weekend can pay more attention and giving a full of love to their children spend more time with them. Therefore, parents can secure the safety of their children every day. All in all, hiring maid can give parents much advantage to manage the children and parents also their career in workplace. Therefore, the government should play an important role in the entry of domestic workers to meet market demand of maid to the families who needed.

Spanish Adjectives of Quantity

Unless you can answer with numbers, to respond to questions like how many? youll probably need to use one of the Spanish adjectives of quantity. An example of an adjective of quantity in English is many in the phrase many dogs. The adjective comes before the noun and tells how many. It is the same in Spanish, muchos perros where muchos is the adjective of quantity. Like most other non-descriptive adjectives, adjectives of quantity usually come before the noun they refer to (just as in English), or they can come after a copulative verb. And like other adjectives, they must match the nouns they refer to in number and gender. Here are the most common adjectives of quantity with examples of how they are used: algà ºn, alguna, algunos, algunas—some, any—Alguna vez, voy al centro. (Some time, I will go downtown.) Pasaron algunos coches de policà ­a. (Some police cars passed.)  ¿Tienes algunos zapatos? (Do you have any shoes?) Nearly all the time, the English any in sentences such as the example is left untranslated into Spanish. For example, Are there any watermelons? becomes  ¿Hay sandà ­as?ambos, ambas—both—Ambas compaà ±Ãƒ ­as crearà ¡n una empresa internacional. (Both companies will create an international enterprise.)bastante, bastantes—enough, sufficient—En mi ciudad hay bastantes iglesias. (In my city there are enough churches.)mucho, mucha, muchos, muchas—much, many—Los medios de comunicacià ³n tienen mucho poder. (Communications media have much power.) Ella tiene muchos gatos. (She has many cats.)—Typically, this word is translated as much when singular and many when plural. In informal usage, you also can tra nslate as a lot of.ningà ºn, ninguna—no—Ninguna persona serà ¡ atacada or ridiculizada. (No person will be attacked or ridiculed.) In Spanish, it is far less common to use ninguno or ninguna as an adjective than to use no as an adverb with the main verb, thus negating the entire sentence. Thus, I have no shoes would typically be stated as no tengo zapatos.poco, poca, pocos, pocas—small, little or slight; few—Hay poco pan. (There is little bread.) Hay pocas uvas. (There are a few grapes.)suficiente—enough, sufficient—Tenemos equipos suficientes para las inspecciones. (We have enough teams for the inspections.) Bastante is more frequently used than suficiente. Suficiente frequently follows the noun.tanto, tanta, tantos, tantas—so much, so many—Jamà ¡s habà ­a comido tanto queso. (He had never eaten so much cheese.) En Amà ©rica Latina nunca han existido tantos pobres como ahora. (In Latin America there never have existed so many poor people as now.)todo, toda, todos, todas—each, every, all—Todo americano lo sabe. (Every American knows it.) Todos los perros van al cielo. (All dogs go to heaven.) Use of todo or toda in singular form as an adjective isnt particularly common. Todos or todas is quite often used in plural form before the definite article, as in the example.unos, unas—some—Unos gatos son mejores cazadores que otros. (Some cats are better hunters than others.)varios, varias—several—Javier tenà ­a varios coches. (Javier had several cars.) Note that many of these adjectives are frequently used as other parts of speech, especially pronouns and adverbs. For example, poco can also function as an adverb meaning not. For example: Es poco inteligente. (Shes unintelligent.) Sample Sentences Using Adjectives of Quantity Hemos reunido muchas firmas, pero no son bastantes para hacer la peticià ³n. (We have gathered many signatures, but they arent enough to make the petition valid.) Necesitamos observe lo que ningà ºn ojo puede ver. (We need to observe what no eye can see.)  ¿Tiene este hombre tantos amigos como enemigos? (Does this man have as many friends as enemies?) Los padres nuevos suelen preguntar si sus bebà ©s dormirà ¡n toda la noche alguna vez. (New parents keep on asking if their babies will sleep all night some time.)