climate Essays (589 words) - Olio Doliva, Macchia Mediterranea

INTRODUZIONE AL CAMBIAMENTO CLIMATICO L?attenzione di alcuni scienziati del Gooddard Istitute ? da tempo caduta sul cambiamento climatico che sta avvenendo sulle sponde del Mediterraneo . Confrontando i risultati dei principali modelli climatici i ricercatori hanno delineato i possibili impatti sul raddoppio dell?anidride carbonica(CO2). La regione che si affaccia sulle sponde mediterranee,e quindi risente della macchia mediterranea(0),? caratterizzata da stagioni miti e non estremizzate ;qui si produce il 60% dell? olio d?oliva ,il 45% dell? uva, il 20% di agrumi e il 12% dei cereali ma tutto ci? potrebbe cambiare perch? il bacino potrebbe essere colpito da condizioni climatiche tropicali, e il regime delle piogge trasformarsi , con periodi di siccit? alternati a periodi di piogge intense e tempeste , le quali scaricheranno enormi quantit? d?acqua in pochissimo tempo, il terreno non riuscir? ad assorbirle. E sconvolgendo questo ciclo, circa il 30% del territorio italiano rischia di trasformarsi in deserto e come esso anche tutte le coste del sud europeo e del nord Africa. L? aumento del livello del Mediterraneo sar? di almeno 20 centimetri investendo in Italia Venezia, il delta del Po, le coste basse dell? Adriatico ,della Toscana e del Lazio: migliaia di chilometri di coste italiane diventeranno sempre pi? vulnerabili a burrasche e tempeste. Mentre per quanto riguarda le culture di ulivo e limone si sposteranno pi? al nord, e i cereali subiranno effetti negativi su larga scala per colpa del mutato ciclo idrico. Per quanto riguarda il cambiamento degli ecosistemi dipender? dalla velocit? con cui tutto ci? accadr?. Quanto all? umanit? ci si attende che si proponga un ulteriore divario tra le popolazioni del sud del mondo e quelle del nord del mondo. I paesi industrializzati troveranno i modi per far fronte a questi cambiamenti, mentre i paesi pi? poveri pagheranno a caro prezzo questo stravolgimento e poco cambier? se ?l?impronta umana?(cio? come influisce l?uomo sull?ambiente da lui insediato) ? stata individuata oppure no perch? le loro condizioni potranno solo peggiorare. CAUSE CAMBIAMENTO CLIMATICO Oggi ? chiaro che i cambiamenti climatici, e dunque il riscaldamento globale, stanno minacciando interi ecosistemi(1), mettendo a repentaglio anche la nostra vita a causa dell'aumento dell'intensit? e della frequenza dei cosiddetti "eventi estremi" (uragani, alluvioni)e l?uso spropositato di combustibili fossili ha portato a un aumento dell?anidride carbonica(CO2) In pi? abbiamo altre cause del cambiamento climatico: Inquinamento industriale:vengono liberati nell?aria anidride solforosa, piombo, ossidi di azoto, zolfo e tantissime altre sostanze tutte fortemente nocive per le piante, gli animali e l?uomo stesso; Inquinamento da autoveicoli(smog):vengono liberati nell?aria ossido di carbonio , ossido di azoto , piombo e idrocarburi non completamente bruciati. L?ossido di carbonio in dosi elevate ? mortale, l?ossido di azoto provoca bronchiti e contribuisce alla formazione delle piogge acide, il piombo causa seri danni ai vari organi vitali e gli idrocarburi sono altamente cancerogeni(questo inquinamento interessa principalmente le citta dove ? stanziato l?87% della popolazione); Inquinamento da impianti di riscaldamento:vengono liberati nell?aria anidride solforosa, fumo e altre sostanze tossiche che contribuiscono alla formazione delle piogge acide. Tutte queste sostanze rallentano il fenomeno della fotosintesi clorofiliana, reazione biochimica effettuata dai vegetali, con questa reazione le piante di giorno assorbono anidride carbonica e rilasciano ossigeno, mentre di notte il contrario oltre a ci? le foreste incamerano anidride carbonica invece di lasciarla libera nell? atmosfera cos? immagazzinano ogni anno met? della CO2 mondiale pi? o meno 3,000,000,000 di tonnellate ecco perche il disboscamento ? un fenomeno cosi distruttivo per l? ambiente..

PROJECT 1- DERIVING MEANING Example

PROJECT 1 PROJECT 1 Deriving meaning Deriving meaning form an art Figure Reference art: Relief caving from the Kandarya Mahedeva temple Khajurao India on page 177The strategies in deriving meaningFormal analysisElements in this picture comprise images of people enjoying sexual contacts evident from images of men masturbating besides other related acts (Arntz, n.d.). It shows a form of togetherness among the people in the societal setting. Masturbating people in this portrait embrace women and men whereby they seem to be in a state of celebration intended to please each other. Hence, integrating with each other to show heightened level of fantasies, which the involved parties seem to enjoy. The other idea in the art according to the combination of the elements is the sign of pleasure and reunion among the people addressed by the presentation art.Psychoanalytical strategyThe art in this situation also shows the culture of people within a given community. It clearly shows that there was an element of meani ng of sexuality in the previous times. It shows that there was past experience in terms of lack of freedom to enjoy certain elements of life (Arntz, n.d.). The picture also shows an element of reunion to show in the past separation of people within a given community.Feminism criticismThe art also shows an element of gender in the art. It explains the roles of women and men in their line of marriage. It exploits the relationship that the community expects from a man and woman who are together in marriage (Arntz, n.d.). This shows they have the role of satisfying one another in their marital life though one aspect is more of erotic than it ought to be, which masturbation. In addition, it shows the aspect of feminism that exists in terms of gender interactions whereby each woman within the society in question ought to be submissive to their polygamous husbands.Personal interpretationWhen I look at the picture, what comes into my mind is the perception of people towards sexuality. The e rotic practices shown in the picture dictates the current society that consists of exposure of certain social evils. Hence, aligning with the current society’s perception towards sexuality whereby most people term sex as an art of celebrating amongst themselves by pleasing each other with their bodies, which is evident in the above portrait. ReferencesArntz, C. (n.d.). Reproduction & Sexuality.

Fall 2010 November Elections Essay Example | Topics and Well Written Essays - 250 words

Fall 2010 November Elections - Essay Example That in itself might be a good thing. The flawed Healthcare bill is likely to be seriously amended by the Republicans. Obama tried to ram through a lot of bills that many Americans did not support. He also tried to spend his way out of the recession. This didnt work and people were very unhappy. With his stimulus bill he made a promise: Give me nearly $1 trillion to spend and I will give you more jobs. That didnt happen. The Republicans believe that a lot fewer of the solutions to the economic situation lie in the hands of government. They want the private sector to pick up the slack. The truth is that the outcome of the election may result in some deadlock but that is not necessarily a bad thing. The founding fathers were not big fans of government. They were happy to see government weakened which would allow people to make their own decisions in their own small towns. That is what we may see

Coursework in Economics Essay Example | Topics and Well Written Essays - 1250 words

Coursework in Economics - Essay Example given that the price remains constant, the demand curve may shift upwards or downward, some of the reasons why the demand curve shifts include a change in future price expectations, consumers may opt to purchase more today to avoid high prices in the future or purchase less to purchase at low prices in the future, (Hardwick (2002)). The following table shows an example of downward shift and upward shift in demand: From the above diagram assuming that demand curve 0 is the original demand curve, a downward shift in the demand curve will shift the demand curve to demand curve 1 while an upward shift will shift the demand curve to demand curve 2. A shift in supply curve occurs when the quantity supplied increases or decreases given that the price remains constant, the supply curve may shift upwards or downward, (Hardwick (2002)). The following table shows a downward and upward shift in supply: From the above diagram assuming that supply curve 0 is the original demand curve, a downward shift in the supply curve will shift the supply curve to supply curve 2 while an upward shift will shift the supply curve to supply curve 1. Own price elasticity of demand refers to the percentage change in quantity demanded when the price is increased by one percent. Therefore it is calculated by dividing the percentage change in the quantity demanded by the percentage change in price level. For a normal good own price elasticity of demand is negative. (Walter (2000)) Own price elasticity of supply refers to the percentage change in quantity supplied when the price is increased by one percent. Therefore it is calculated by dividing the percentage change in the quantity supplied by the percentage change in price level. (Walter (2000)) The price of oil is determined by the supply and the demand of oil in the world. Some of the major producers include Iran, Iraq and Kuwait. From the oil price chart it is evident that the fluctuations in oil prices has been as a result of war and

The Yellow Wallpaper Essay Essay Example for Free

The Yellow Wallpaper Essay Essay â€Å"The Yellow Wallpaper† is a chilling tale of a woman forced to insanity, yet her mental state is a double edged sword. What brings her down is, in the end, her savior. The doctors in the narrator’s life give her the worst advice possible for the outcome they desire. She is forced to do nothing, and instead of pulling her back to normality, the dreariness pushes her further and further away. Left with nothing to occupy her mind, her mind occupies itself. In the beginning of the story, the woman is quite lucid in the usual sense. Due to a lack of understanding of depression, she is forced to hide the things she loves. She focuses her attention on all she has left, her mental state. However, since she is told that there is nothing wrong she does not analyze it directly, but instead watches her life play out in the metaphor created by the horrid yellow wallpaper. As the story progresses, you watch as the lady loses her touch with reality, focusing more and more on the yellow wallpaper. She pays attention every inch of it, noticing the ever watching eyes and the twists that keep what she believes to be a creeping woman trapped behind. She stops complaining of boredom, and instead analyses the paper most intently. I believe when the narrator begins to see the creeping, humiliated woman outside is the beginning of her liberation. It shows that the woman is free, at least part of the time. This is also around the time when the narrator noti ces the streak running around the room. While this could of been there before, one would think she would of noticed it previously. This indicates she created it herself, in her moments of freedom. During this part of the story she was only liberated part of the time though, as John was still there to watch her at night. The creeping woman she sees also hides herself when someone is coming. As the moon peeks through the windows, the narrator watches the woman in the wallpaper. She is no longer creeping and hiding, as the narrator is forced to also do by day, but shaking the â€Å"bars† of her prison, meanwhile the narrator is wishing John would take another room so that she could escape him. By the end of the story, she has completely forgotten about her wishes to have some kind of entertainment. As her husband is gone and she is able to trick Jennie into  leaving her alone, the narrator manages to free the woman behind the wallpaper from it’s entangling grasp. Thus, she also frees herself from the controlling grasp of her husband. She is free to do as she pleases, which at the moment is creep around the room in the most unusual fashion. However, she seems to really be enjoying herself. Not only that, but she doesn’t even want to leave her room. When John returns, he sees that he is no longer in control what so ever, and faints. While he is kind of cumbersome and in the way, as the narrator now has to crawl over him to complete her circuit, this shows how completely she has triumphed. Society may find her actions disconcerting, but it is the very same society that pushed her away into isolation in the first place. Crawling over her husband’s inert body merely emphasizes the point that she has finally completely overcome him. She finally get’s her way.

Stability and bioavailability of different erythromycin derivatives :: essays research papers

1. Introduction Erythromycin is one of the most common used macrolide antibiotics. Over the years after Abbott introduced Erythrocin ® (erythromycin stearate) into the market, several generics and new brands have been introduced – generics in the form of different drug formulations and new brands in the form of different erythromycin salts. All these derivatives have the same pharmacodynamics and mechanism of action, but differ tremendously in their pharmacokinetics. This paper will give an introduction and a brief overview in the different stabilities and pharmacokinetics of the erythromycin salts and an introduction into new approaches in the field of macrolide antibiotics. Table of Contents 1. Introduction  Ã‚  Ã‚  Ã‚  Ã‚  2 2. Erythromycin – a brief chemical description  Ã‚  Ã‚  Ã‚  Ã‚  4 2.1 Crystal structure and hygroscopicity  Ã‚  Ã‚  Ã‚  Ã‚  7 2.2 Mechanism of action  Ã‚  Ã‚  Ã‚  Ã‚  8 3. Derivatives of erythromycin base  Ã‚  Ã‚  Ã‚  Ã‚  9 3.1 Erythromycin stearate  Ã‚  Ã‚  Ã‚  Ã‚  10 3.2 Erythromycin ethyl succinate  Ã‚  Ã‚  Ã‚  Ã‚  10 3.3 Erythromycin estolate  Ã‚  Ã‚  Ã‚  Ã‚  11 3.4 Comparison between erythromycin base and estolate  Ã‚  Ã‚  Ã‚  Ã‚  13 4 Chemical derivatives of erythromycin  Ã‚  Ã‚  Ã‚  Ã‚  13 4.1 Roxithromycin  Ã‚  Ã‚  Ã‚  Ã‚  13 4.2 Clarithromycin  Ã‚  Ã‚  Ã‚  Ã‚  14 4.3 Azithromycin  Ã‚  Ã‚  Ã‚  Ã‚  14 4.4 Dirithromycin  Ã‚  Ã‚  Ã‚  Ã‚  15 4.5 Flurithromycin  Ã‚  Ã‚  Ã‚  Ã‚  16 4.6 Comparison of properties among the newer macrolides  Ã‚  Ã‚  Ã‚  Ã‚  17 5 Discussion and conclusions  Ã‚  Ã‚  Ã‚  Ã‚  19 References  Ã‚  Ã‚  Ã‚  Ã‚  21 2. Erythromycin – a brief chemical description Figure 2.1 Advertisement for eryped ® [3] Erythromycin belongs to the chemical group of macrolide antibiotics (macros [greek] = great, -olid as the suffix for lactones). It's microbiological activity mainly covers bacterial infections of the respiratory tract and other infections with gram positive bacteria. In the case of erythromycin base, the 14-linked lactone ring (Erythronolid) is conjugated with one basic amino sugar (Desopamine) and one neutral sugar (Cladinose). Figure 2.2 Erythromycin base showing the aglycon (red), the basic amino sugar (green), and the neutral sugar (blue) [2] Erythromycin was first discovered in 1952 in Streptomyces erythreus. The spectrum of activity is equal to penicillin. The antibiotic activity is linked to the presence of the desoxy sugars. There are three known forms of erythromycin. The structure of erythromycin-A is the most common used in formulations and differs from erythromycin-B in the hydroxyl-group in position 13 of the lactone ring. Erythromycin-C is missing the methoxy-group in the cladinose sugar. [8] Stability problems first were discovered when Erythrocin ® was found to contain not the declared amount of erythromycin stearate. The first stability problem with erythromycin is because of its deliquescence. This could be prevented if erythromycin is stored under accurate conditions. Erythromycin has a poor water solubility and solutions decompose quicker if temperature is increased. Figure 2.1 shows the chemical degradation of erythromycin. The formation of the hemiketal is a dehydration and leads to the inactivation and loss of antibiotic activity. This step is highly pH sensitive. Figure 2.3 Chemical degradation and inactivation of erythromycin [4]

My Favorite Detective Story Essay

In my free time the most I like to do is reading books. Because with reading, it doesn’t matter is it a short story or a novel in several volumes, you can know something new about life. I enjoy reading different books but the most I like detectives and fantastic stories. My favorite detective story is Murder on the Orient Express by Agatha Christie featuring the Belgian detective Hercule Poirot. I first read it when I was 12 and it a little shocked me and left a great impression. The first I have always admired the talent of Agatha Christie, she is my favorite writer in detective genre, the mastery with which she described the story is incredible, the ending was completely unpredictable. And as always Hercule Poirot was simply inimitable. So what is story about? The Murder on the Orient Express. Mr. Ratchett was killed. Mr. Poirot accidentally discovers a note by means of which he learns that the murder of Ratchet directly connected with shocked all the world murder little Daisy Armstrong. Real name of Ratchett was Cassetti. Five years earlier, Cassetti kidnapped three-year-old Daisy Armstrong. Though the Armstrong family paid a large ransom, Cassetti murdered the little girl and fled the country with the money. Daisy’s mother, Sonia, was pregnant when she heard of Daisy’s death. The shock sent her into premature labour, and both she and the baby died. Her husband, Colonel Armstrong, shot himself out of grief. Cassetti’s guilt was proved. But despite this he could flee the country and escape further prosecution for the crime. Although the fact that all passengers have their alibis and witnesses proving innocence each of them Poirot because of its lively mind and experience reveals that crime. Hercule Poirot assembles all passengers and offers them 2 possible explanations of Ratchett’s murder. The first explanation is that a stranger – some gangster enemy of Ratchett – murdered Ratchett for reasons unknown, and escaped unnoticed. And the second – Ratchett was killed by all passengers because all of them were related to Armstrongs. He proposed to Bouc, the Head of the Orient Express, to choose the correct. Fully in sympathy with the Armstrong family, and feeling nothing but disgust for the victim, Bouc pronounces the first explanation is correct.