Stephen Crane Essays - Stephen Crane, The Open Boat

Stephen Crane Stephen Crane was the youngest of fourteen children. His father was a strict Methodist minister, who died in 1880, leaving his devout, strong mother to raise the rest of the family. Crane lasted through preparatory school, but spent less than two years in college, excelling at Syracuse in baseball and partying far more than academics. After leaving school, he went to live in New York, doing freelance writing and working on his first book Maggie, A Girl of the Streets. His times in New York City were split between his apartment in the Bowery slum in Manhattan and well-off family in the nearby town of Port Jervis. Crane published Maggie, a study of an innocent slum girl and her downfall in a world of prostitution and abuse, in 1893 at his own expense. It was especially scandalous for the times, and sold few copies. It did attract the attention of other critics and writers, most notably William Dean Howells, who helped Crane receive backing for his next project, The Red Badge of Courage. Published in 1895, The Red Badge was quite different from Maggie in style and approach, and brought Crane international fame and quite a bit of money. Rather than plod through moral tropes, the book is subtle and imagistic, while still being firmly entrenched in the realism of the late 1890's in America. Crane's rich portrayal of Henry Fleming's growth through the trials and terrors of a Civil War battle betray the fact that he himself had not yet seen any fighting or battles when he wrote the book. Many veterans of the Civil War (only thirty years had gone by since its end) praised the book for capturing the feelings and pictures of actual combat. Bolstered by the success of The Red Badge and his book of poetry The Black Riders, Crane became subsumed with ideas of war. He was hired to go to Cuba as a journalist to report on the rebellion there against the Spanish. On the way to the island, Crane was in a shipwreck, from which he was originally reported dead. He rowed to shore in a dinghy, along with three other men, having to swim to shore and drop his money in the sea to prevent from drowning. This experience directly led to his most famous short story "The Open Boat" (1897). For various reasons, Crane stopped writing novels during this time and moved primarily to short stories?probably because they could sell in magazines better but also because he was constantly moving. When staying in Jacksonville, Florida, he met the owner of a brothel, Cora Taylor. She accompanied him to Greece as he reported on the Greco-Turkish War for New York newspapers; and stayed with him until the end of his life. At this point, rumors abounded about Crane, few of them good. There was talk of drug addiction, rampant promiscuity, and even Satanism, none of them true. Crane was disgusted with them and eventually relocated to England. After reporting on the Spanish-American War and Theodore Roosevelt's famed Rough Riders, Crane returned home to England. He then drove himself deeply into debt by throwing huge, expensive parties, reportedly at Cora Taylor's insistence. While he could now count Joseph Conrad, H. G. Wells, and other authors in his circle, most people sponged off of Crane and his lavishness. He worked on a novel about the Greek War and continued writing short stories and poetry, at this point to pay off his large debts. The stress of this life, compounded by an almost blatant disregard for his own health, led to his contracting tuberculosis. He died while in Baden, Germany, trying to recover from this illness. He was not yet 29 years old.

Acids and Bases Terms and Definitions

Acids and Bases Terms and Definitions There are several methods of defining acids and bases. While these definitions dont contradict each other, they do vary in how inclusive they are. The most common definitions of acids and bases are Arrhenius acids and bases, Brà ¸nsted-Lowry  acids and bases, and Lewis acids and bases. Antoine Lavoisier, Humphry Davy, and Justus Liebig also made observations regarding acids and bases, but didnt formalize definitions. Svante Arrhenius  Acids and Bases The Arrhenius theory of acids and bases dates back to 1884, building on his observation that salts, such as sodium chloride, dissociate into what he termed ions when placed into water. acids produce H ions in aqueous solutionsbases produce OH- ions in aqueous solutionswater required, so only allows for aqueous solutionsonly protic acids are allowed; required to produce hydrogen ionsonly hydroxide bases are allowed Johannes Nicolaus Brà ¸nsted - Thomas Martin Lowry Acids and Bases The  Brà ¸nsted or  Brà ¸nsted-Lowry theory describes acid-base reactions as an acid releasing a proton and a base accepting a proton. While the acid definition is pretty much the same as that proposed by Arrhenius (a hydrogen ion is a proton), the definition of what constitutes a base is much broader. acids are proton donorsbases are proton acceptorsaqueous solutions are permissiblebases besides hydroxides are permissibleonly protic acids are allowed Gilbert Newton Lewis  Acids and Bases The Lewis theory of acids and bases is the least restrictive model. It doesnt deal with protons at all, but deals exclusively with electron pairs. acids are electron pair acceptorsbases are electron pair donorsleast restrictive of the acid-base definitions Properties of Acids and Bases Robert Boyle described the qualities of acids and bases in 1661. These characteristics may be used to easily distinguish between the two sets up chemicals without performing complicated tests: Acids taste sour (dont taste them!)- the word acid comes from the Latin acere, which means souracids are corrosiveacids change litmus (a blue vegetable dye) from blue to redtheir aqueous (water) solutions conduct electric current (are electrolytes)react with bases to form salts and waterevolve hydrogen gas (H2) upon reaction with an active metal (such as alkali metals, alkaline earth metals, zinc, aluminum) Common Acids citric acid (from certain fruits and veggies, notably citrus fruits)ascorbic acid (vitamin C, as from certain fruits)vinegar (5% acetic acid)carbonic acid (for carbonation of soft drinks)lactic acid (in buttermilk) Bases taste bitter (dont taste them!)feel slippery or soapy (dont arbitrarily touch them!)bases dont change the color of litmus; they can turn red (acidified) litmus back to bluetheir aqueous (water) solutions conduct an electric current (are electrolytes)react with acids to form salts and water Common Bases detergentssoaplye (NaOH)household ammonia (aqueous) Strong and Weak Acids and Bases The strength of acids and bases depends on their ability to dissociate or break into their ions in water. A strong acid or strong base completely dissociates (e.g., HCl or NaOH), while a weak acid or weak base only partially dissociates (e.g., acetic acid). The acid dissociation constant and base dissociation constant indicates the relative strength of an acid or base. The acid dissociation constant Ka is the equilibrium constant of an acid-base dissociation: HA H2O ⇆ A- H3O where HA is the acid and A- is the conjugate base. Ka [A-][H3O] / [HA][H2O] This is used to calculate pKa, the logarithmic constant: pka - log10 Ka The larger the pKa value, the smaller the dissociation of the acid and the weaker the acid. Strong acids have a pKa of less than -2.

Digital Multimeter User'd Guide Essay Example | Topics and Well Written Essays - 3000 words

Digital Multimeter User'd Guide - Essay Example Digital Multimeter User Guide Name: Institution: Table of contents Abstract†¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦.. ... †¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦..13 Fig 5: Series measurement †¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦.13 Fig 6: Range view switch of a DMM†¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦.14 Fig 7: Direct current †¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦..16 Fig 8: Alternating current †¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦..16 Fig 9: Lead test placement ...†¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚ ¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦..16 Fig 10: Dry cell voltage measurement †¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦17 Fig 11: Wall outlet voltage measurement †¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦..18 Fig 12: Resistance connectivity†¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦..18 Fig 13: Connection between a resistor and a multimeter†¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦....19 List of tables Table 1: Common signs used in multimeters †¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦8 Table 2: Abbreviatio ns used in multimeters ..........................................................................9 Abstract Digital multimeters are devices that are commonly used in the study of electricity and construction (Bernard, 1988). These devices are designed and produced in large numbers for electrical engineers and other electrical experts. Usually, these devices have supplementary features that are mostly, not of use. Digital meters portray their output in a numeric form on an LCD (Liquid Crystal Display) or a LED (Light Emitting Diode) screen. Considering the current setting of the world, one has to be technologically conversant with these resourceful and dominant tools used in electronics

2012 London Olympic Games Case Study Example | Topics and Well Written Essays - 500 words

2012 London Olympic Games - Case Study Example Among these broad categories that were considered is the sporting events that will be in and around London, the global appeal of individual sports, local appeal of a particular sport that is influenced by UK’s past success on the sport, and event stages where awards will be issued. In addition, influential teams or athletes that have a lot of influence also impacted on the pricing for particular events they were participating in and lastly, the pricing strategies for past Olympics was also considered during the pricing for London Olympics (Gourville and Bertini, 8). Based on the experience that Williamson had on pricing for events, he knew that it would be easy to sell highly priced tickets during the opening ceremony, finals for particular events, and during the closing ceremony. However, the biggest headache was selling tickets for ‘not-so-popular events’ such as handball, archery, and table tennis, especially during the preliminary rounds. Besides this fact, Williamson was also faced with the challenge of setting prices for individual sports (Gourville and Bertini, 1). However, it is important to note that the severity of the challenge varied with nature of the sport, for example, it was not challenging task to set the prices for swimming events as compared to handball events. For the most popular events, which comprised of swimming, artistic gymnastics, and athletics, the prices of the tickets during the preliminary rounds was expected to remain at a high level during the entire period but they were expected to be at their peak (highest price) during the finals and award ceremony of the sport. Additionally, ticket prices for individual sports also varied depending on the seating arrangement i.e. seats that were close to the playing field were highly priced than seats at the far back end of the playing field. Sports that had influential personalities who were widely known across the World

Racial Constructs Essay Example | Topics and Well Written Essays - 1000 words - 1

Racial Constructs - Essay Example y of individuals is the cultural issues and environment as in the article, race concepts in medicine, but all individuals if subjected to the same conditions and environment will think and act the same despite the race. On the contrary, it is true to some extent that according to Jethro’s message with are right as per the movie district nine. Forcibly, Van der Merwe struggles to relocate the aliens who had come in a ship and was settling in a section of South Africa. Since humans could not operate the weapons that the aliens had, the growth of a claw in the place of a hand by van, propelled him to be a central operator of both the Nigerian gangsters and Security Company. The Nigerian gangs were exploiting the aliens by selling them cat foods. However, the above to some extent portrays the evidence of the fact that whites are always right. This is so because everyone was afraid to relocate the aliens and the only torch bearer was a fan, whom manages to maneuver through to become a hero in deals and designs of relocating the aliens who were rejected by the residents. With his racial complexion of white, Van der Merwe seams to be successful, and at this point is when there is approving of the t erm whites are right. Here, the hero tactically finds an idea that the only way to operate the alien’s weapons is by growing a lobster claw in the place of his hand. With the above claws, he manages to be a security company and at the same time, he operates the Nigerian gangster ideas by exploiting the aliens from the cat food being sold to them. All the above was for the efforts of relocating the aliens, though it was not an easy task to relocate them. Having put that across, the fact remains that Van der Merwe used his brains to explore the aliens by not only growing the claws but also incorporating those aliens who proved to be intelligent and those that had human emotions. It is evident according to the movie district nine that the aliens in the movie are of the

Structure of Myometrium Architecture

Structure of Myometrium Architecture THE STRUCTURAL AND ULTRASTRUCTURAL PARTICULARITIES OF THE MYOMETRIUM ARCHITECTURE Antonella Chescà ¤1, M.A.Moga1, Mariana Tilinca2, H. Matei3 Summary The morphological aspects of the human non-pregnant and pregnant at due time myometrium were emphasized by the classical histological technique and the electronic microscopic technique. We noticed the structural changes that appear at the level of the myocytes, connective and myometrial vascular structures. Both the stage of non-pregnant uterus and the one of pregnant uterus at due time present structural and ultra-structur ­al particularities at the level of the myocytes, connective structures and of the myometrial vascular ones. Key words: myometrium, myocytes, optical microscopy, electronic microscopy The myometrium is made up of smooth muscular fibers that are internally disposed in layers with circular fibers and externally with longitudinal fibers, in-between them being a layer of coiled fibers that, during the pregnancy, allow the uterus to grow and to be properly irrigated with blood. The myometrium is crossed by numerous blood vessels, with predominant venous type structures, also known as stratum vasculosum. It was ascertained that the uterine smooth muscular fibers play a major role in the physiologic haemostasis, namely in closing the vascular structures at this level. (5) During the pregnancy both the uterine body and the cervix become violaceae, due to the strong blood irrigation. The pregnancy is featured by the hypertrophy and the hyper ­plasia of the myometrium. We may also notice an increase of the number of elastic and collagen fibers that prevent the uterine wall from breaking. The changes of the cervix are less representative and consist of edema and local congestion. (4) The normal evolution of the pregnancy takes place on the grounds of certain important transformations of the endocrine system. Besides the changes appearing at the level of the genital tract generated by the development of the embryo and of the fetus, the body of the pregnant woman will undergo a stage of more intense hormone activity. (3) The investigations were made on human fresh material taken by the specialty services of obstetrics-gynecology, with the contribution of the anatomical pathology service within Dr. I. A. Sbarcea Hospital of Brasov and of the specialized study laboratories of the Cellular and Molecular Medicine Department within Carol Davila Medical University of Bucharest. The fragments of the normal non-pregnant uterus were obtained from surgeries such as total and subtotal hysterectomies. The fragments of normal pregnant uterus at due time were taken both from the uterine body and from the cervix. The fragments taken within the specialty services were studied by means of the classical optic microscopy method and by means of the electronic microscopy. The classic histological technique used the hematoxylin- eosin and Van Gieson staining. The fragments taken for examination by means of the electronic microscope were processed according to the technique that includes as main stages the fixation with glutaraldehyde in cacodyl pad for 90 minutes at 4C, washing with cacodyl pad pH 7.4, three times for 5 minutes at 4 °C; incubation in GOMORI environment; postfixacion in 0s04 of 1%, for 90 minutes at 4 °C; rinsing in bidistilled water three time for 5 minutes each, at room temperature, block coloring in uranyl acetate for 30 minutes, at 4C in the dark, washing with 10% alcohol, twice, 3 minutes each, at room temperature; dehydration with propdenoxide, twice for 5 minutes each at room temperature; dehydration with absolute ethylic alcohol, 3 times. 5 minutes each at room temperature; dehydration with propilenoxide twice, 5 minutes each at room temperature; penetration in Epon with inclusion in propilenoxide (1:1), for minimum one hour, followed by the evaporation of propilenoxide, up to 8 hours, penetration with Epon inc lusion for 2 hours, inclu ­sion, ultra sectioning at microtoms, grids contrasting and grids examination at the electronic microscope, obtaining magnifications between lOOOxoOOOx according to Onicescu method, 1998. We monitored the structural and ultra structural changes appearing in the uterine muscular fibers, in the connective structures at this level, as well as of the vascular myometrial structures using classical histological and electronic microscopy techniques. Ultra structurally, the uterine muscular fiber presents features common to the smooth muscular fibers of the cavity organs, with a centrally located, elongated nucleus. The sarcolemma of the myocytes located at the periphery of the muscle fiber seems to have three layers. The changes appeared at the level of the sarcoplasma may be grouped in two areas. At the level of the central area, the changes of the common organelles are being emphasized, such as the rough endoplasmic reticulum made up of several cisterns and vacuoles, of whose membranes ribosomes are being attached at large intervals, free ribosomes and glycogen inclusions, rare flattened sacks and mitochondria presenting a small number of lamella-form christa. At the level of the peripheral area that occupies the larger part, are the special, organelles, forming the contrac ­tile sublayers of the uterine muscular fiber, namely the myofilaments and the dense bodies. The myofilaments, visible at the electronic microscope, are represented only by actin filaments corresponding to the thin filaments of the striated muscle fiber. The myosin filaments are missing, corresponding to the thick filaments of the striated muscle fiber. We noticed ultra structural changes of the uterine muscular fiber, where the myosin appears as dense bodies, noticed as opaque spots, dense at electrons flow, elongated, distributed among the actin filaments. (12) During the pregnancy the myometrium hypertrophies, process that by its rapidity and amplitude, is a unique phenomenon in the normal adult body, accompanied by spectacular reshuffling of the uterine muscle fiber. In these circumstances, the myocytes grow of about 5-10 times, reaching lengths of 500 micrometers. In the same time, they keep their general shape, but elongations appear extensions especially at the ends. (7)Thus, major changes of the main components of the sarcoplasma are achieved. Both the myofilaments and the dense bodies numerically grow. Unlike the myocyte from the non pregnant uterus, the commune organelles occupy large areas in the sarcoplasma and in the peripheral area of the cell. The Golgi complex shows quantity and quality changes, becoming one of the most prominent features of the sarcoplasma. The quantity determinations showed an increase of the glycogen content of the pregnant uterine muscle fiber, of approximately 50 times. (5) Under the influence of the ovaries hormones, various kinds of muscle connections appear in the myometrium, characteristic to the effect of the estrogens or of the progesterone. Under the influence of the estrogen, we may simultane ­ously notice three types of distinct cell groups, light cells oriented approximately parallel to the more or less smooth surfaces, light cells in transverse arrangement and having inter-located surfaces on wide areas and spiral dark cells, located in transverse arrangement, with wider distances between them. (9) Under the influence of the progesterone, after the ovulation and during pregnancy, we may notice rare light cells, yet, the vacuolated cells dominate, especially after the ovulation. As well, typical spiral cells, with more or less smooth surfaces highlighted. At the level of the intrauterine connective tissue, although the predominant connective cell is the fibroblast, we may also notice macrophages, plasmocytes and masto- cytes, all these cell types being reduced in number. Both the structural appearance and the activity of the connective cells undergo changes that take place under the hormonal influences occurring in the uterine functional cycle. (2) We noticed that in the uterus that prepares for gestation, fibroblasts may undergo metaplasia and may change into myocytes. The pregnancy stresses the most the connective cell, in the sense of accelerating in it the synthesis process of the specific macromolecules, such as the collagen and certain products such as the glycosaminoglycanes. (3) The cervix of the adult woman presents in its structure a large amount of connective tissue, made up of cells, fibres, fundamental substance and a small number of smooth muscle fibres. In the non pregnancy stage, the connective of the cervix seems twice more abundant than the one uterine body. (4) The blood vessels of the myometrium, of artery or vein type, represent the constant and favourable element to all myomterial cell metabolic changes, in all the uterine functional phases. This way they insure all myometrial local metabolic activity, of synthesis, on collaboration between the myocytes and the surrounding connective, of cell symbiosis changing in pregnancy compared to non pregnancy. (6) On the myometrium fragments of the non pregnant Figure 3 Non pregnant normal uterus. Myometrium. Transmission Electron Microscopy x 2950 normal uterus and pregnant uterus at due time, by means of the classical histological technique we highlight an arrange ­ment characteristic to a myometrial area where the smooth muscle fibers are placed in fascicles having different direc ­tions and sizes. In between them, we may notice weakly represented connective structures, (fig. 1) The image shows a myometrial area where the connec ­tive structures are well represented in the non pregnant uterus. In the same time, we may notice that between the fascicules of myometrial muscle fibers, blood vessels of capillary and arterioles type are present in longitudinal section, (fig. 2) Figure 1 Non pregnant normal uterus. Myometrium. Optical Microscopy. Hematoxylin-Eosin stain x 20 Using the technique of electronic microscopy, on a microphoto we notice the detail of an area of the sarcoplasma of the uterine smooth muscle fiber. We notice a large number of mitochondria positioned in groups between the myofilaments and especially in a row in the closest neighborhood and along the dense bodies. Among Figure 4 Normal uterus, pregnant at due time. Myometrium. Optical Microscopy. Hematoxylin-Eosin stain x40 the mitochondria there are frequent glycogen inclusions. We may notice the anchoring of the actin filaments of the dense body of the myocyte, (fig. 3) At an magnifying power of 40x, using the classical histological technique, we observe the smooth muscle fibers, with elongated, euchromatic nucleus, with rich sarcoplasma and a cross-sectioned arteriole. The fibroblasts between the myocytes are rare, with dark, rectilinear nucleus, (fig. 4) The figure illustrates myocytes presenting a large, oval- shaped, largely elongated, rich in euchromatine nucleus, with 1-3 nucleoli. The sarcoplasma is abundant. Near the muscle fibers, there is a large amount of connective tissue with fibroblasts and numerous connective fibers, (fig. 5) Figure 2 Non pregnant normal uterus. Myometrium. Optical Microscopy. Van Gieson stain x 20 An observed ultrastructural aspect illustrates longitudi ­nally sectioned smooth muscle fibers, with grouped charac ­teristic arrangement, namely the thinned part of a myocyte being near the thicker central area of the neighboring myocytes. Between the muscle fibers there are narrow spaces with less connective matrix. The nucleus of the muscle fibers is predominantly euchromatic and the sarcoplasma near the poles of the nucleus contains cellular organelles, besides them we may observe myofilaments and rare dense odies. The sarcoplasma shows caveolae and dense areas, lear the myocytes we find a fibroblast with large nucleus, ctively euchromatic. Around it, the cytoplasm is loaded dth cellular organelles, among which we notice the rough ndoplasmic reticulum, as dilated, inter-communicating acks. (fig. 6) Researches based on modern techniques of electronic licroscopy, lead to data related to ultrastructural organization †¢f the uterine smooth muscle fibers, with its particularities in wo distinct functional moments, non pregnancy and regnancy, in healthy women, with uterus having no We observed the vicinity relations between the nyocytes and the connective cells at this level, focusing m the fibroblasts, connective cells considered to be lormone-sensitive, moreover as this type of cells takes  »art in the composition of organs that are hormone- ensitive such as the uterus or its components. (2) The technique of electronic microscopy highlighted dtrastructural aspects of the smooth muscle fibers, of the connective cells and of the vascular structures of the nyometrium of the non pregnant and pregnant uterus. Studies of electronic microscopy highlighted various tspects. Thus, the specific functions of the smooth muscle, uch as tension, contraction and relaxation, are considered to )e the result of the coordinated activity of the muscle cells. X/e assumed the existence of a functional syncytium at least or four functional conditions. In the same time, we lescribed the fusion of the neighboring cell membranes, in ;ertain contact points, namely intercellular junctions type  »nulla occludens and it may be considered that such ;onnections would represent the morphological fundamen- :als of the functional synctyium. (11) As well, we showed that :he number of noticed contact points is small compared to :he surface of the cell. According to certain authors, the iifferent forms of cell contacts are granted to various imctional states of the same muscle. The muscle connec- :ions thus exist as interdigital cells, on wide surfaces, with anclearly defined cell membranes or as sole, distinct cells. Varied forms of muscle cells seem to help the answer to the question whether the myometrial contraction is isotonic or isometric. From this point of view, we consider that the function of the myometrium resides in an isometric contraction. The observations of other researchers suggest that in the myometrium and in the smooth muscle of other cavity organs, the isometric and isotonic contractions are just different phases of a complex contraction cycle. According to the morphological observations, it seems to be the rhythmic passing from relaxation to isometric contractions and the other way around. (10) According to recent studies, the fine structure of myometrium from pigs collected at well-defined stages dur ­ing pregnancy was investigated by transmission electron microscopy. The morphology of the pregnant myometrium resembled that in non-pregnant pigs. Thick myofilaments were conspicuous during early pregnancy, unapparent during mid-pregnancy and visible again by days 80-84 and towards Figure 5 Normal uterus, pregnant at due time. Myometrium. Optical Microscopy. Van Gieson stain x20 Figure 6 Normal uterus, pregnant at due time. Myometrium. Transmission Electron Microscopy xl 500 parturition. Gap junctions were extremely rare throughout pregnancy. (8) The researches in the field are ongoing, due to the modern investigation possibilities that, besides the already known investigation methods, mainly refer to the immunohistochemical techniques.

Abstinence :: essays research papers

Abstinence: To chose or not to choose?   Ã‚  Ã‚  Ã‚  Ã‚  Many teenagers just don’t understand the responsibilities that go along with being sexually active, they don’t even think about them. But maybe they should sit back and think before taking part. People should not be having sex just to have it, but because they are in love. The only time premarital sex may be okay is in the boundaries of a loving, trusting relationship. Other wise you will most likely regret it when you get older.   Ã‚  Ã‚  Ã‚  Ã‚  There is so much feeling that goes into being sexually active most teenagers wouldn’t even be able to handle the emotional stress that gets added to the relationship after engaging in intercourse. The person’s self-esteem is at high risk, how will people feel after the relationship ends? It has been prove that â€Å"While many people feel guilty for having sex, or feel hurt and used when a relationship ends after they participated in sex with the other person, abstinence affirms self-esteem.† (Affirming self-esteem 1). But then there are the small numbers of people that actually don’t regret abstinence.   Ã‚  Ã‚  Ã‚  Ã‚  There are ways to show the partner in a relationship that there is a lot of love for them without engaging in sexual intercourse. Instead of sex something’s that people chose to do are, go for a walk on the beach, give each other a massage, have a snowball fight, or make dinner together. Touching may be okay as long as you don’t exchange body fluids. Sex is only okay within the boundaries of love, and with out love it just isn’t worth it.   Ã‚  Ã‚  Ã‚  Ã‚  There are so many responsibilities that go along with being sexually active especially when in a relationship. People have to remember that they must remain faithful to the partner; being willing to compromise; standing by the partner, even no matter how difficult it gets which means everyone has to be willing to work things out with one another. The most important is to remember to always no matter what practice safe sex. So many feelings can be hurt if the break up happens after engaging in sex because it is such an intimate experience that people share with the ones they love. (Moe)   Ã‚  Ã‚  Ã‚  Ã‚  Many teenagers also think that sex is a way to gain intimacy but â€Å"Genital sex is an expression of intimacy, not the means to intimacy. True intimacy springs from verbal and emotional communion† (Fryling 1).

Research on behaviour of children with stay at home Essay

It is a personal and specific decision that has its perks as well as its pitfalls. Advancements in women’s rights in the workplace have encouraged women to acquire higher paying Jobs. However, recent research suggests that more women are choosing to stay at home. It is not because of a lack of education or opportunity; they simply dont want to have someone else raise their children. A study by the National Institute of Child Health and Human Development (NICHD) in 1999 found that the more hours a child spent at a non- maternal care before age 5, the less positive the childs interactions with his/her other will be. Two studies published in 2003 conducted by the NICHD found that children in day care had higher levels of stress and were more aggressive than those cared for at home by the mother. There are millions of children, however, who have working mothers and who grow up to be responsible, sucessful adults. Benefits for children raised by stay-at-home mothers. STABILITY: This is the main benefir for your children. Knowing that you are there gives your child stability. You are able to answer your child questions, dry tears, and offer support. In addition, you will never get those year back. They experience fewer emotional and behavioural problems in childhood: want to help ensure your children turn out to be happy and socially well adjusted? Bond with them when they are infants. Thats the message from the university of Lowa, USA, which found that infants who have a close intimate relationship with their mothers are less likely to be troubled, aggressive or experience other emotional and behavioural problems when they reach school age. Bonding with your child has proven to help in a childs mental and emotional development. Consistency: Your children can rely on you. They can trust the consistency on the way you run your household. Being consistent with mealitimes, Chores, baths, and bedtimes teaches children organization and discipline. They need this consistency to give them structure and routine in their lives. Quality time: All kids need quality time with their mothers. Quality time gives them the assurance of being loved all the time. Quality time also keeps your child out of trouble, which often stems from boredom. the memories they will have of you depend on this quality time

Being and Becoming: Becoming by Being Essay

Pre-Socratic era was marked by periods from Thales of Miletus until that period when Socrates philosophy was yet to be born.   It was during this period when the fundamentals of science (both natural and social were being founded using scientific research and inquiry, and where philosophy and practical science were still married.   Sophos tried to understand and explain the origin, nature, elements, development and workings of the universe by way of argumentative reasoning, critical inquiry and justifications. Pre-Socratic philosophy was mainly characterized by its elements such as essence, change/absolute, harmony and its effort to understand the essential substance of a thing that caused its existence and the dynamic movement it undergoes (changes) to be known as what it is today.   Among the famous thinkers of this period were Thales, Heraclitus, Anaxagoras, Empedocles, Democritus and Parmenides. Whereas pre-Socratic philosophers have had formulated a common line of thought, disparity was inevitable.   Among the arguments that showed differences of the philosophy of that period was Parmenides’ theory of Being and Heraclitus’ theory of Becoming.   Heraclitus argued that the existence of everything was brought about by nothing and that it continuously exists through constant change or by undergoing a dynamic transformation.   What is more striking about the concept of change for Heraclitus is the concept of change within. According to him, it is that contradiction of elements/substance within the object that caused it to transform and that to cause its change, an external intervening need not to be imposed.   Accordingly, for Heraclitus, the world is a continuous struggle and strife, hence it needs change. In contrast, while the internal aspect of an existing element undergoes alterations, the process by which an element transforms is ever constant. Through the understanding of the nature of an element, Heraclitus recognized that the fixed states of being are all part of the varied state of perpetual becoming1.   In humans, the processes of giving birth, living, dying and rebirth are all changes that a person passes through.   However, such pattern is a never-ending cycle, after all.   What will â€Å"become† of a matter is a product of the dynamic development it subjects itself through a never ceasing rhythm. Contrary to Heraclitus’, while Parmenides likewise argued that an object exists because it does exist (that no other factor that may explain the causality of its existence), he failed to recognize if it ever underwent an evolutionary state, thus making it the â€Å"being† as it is today.   Because Parmenides believed – and apparently refuted Heraclitus – that the universe was already at the state of stability, why should it be basking on the process of modification? Everything is what it is because it is what it is and it cannot become what it is not. Both arguments are of much interest specifically in understanding how do we â€Å"become† or what make us came to â€Å"being†.   Later on during Plato’s time, both arguments could be reconciled by proposing that, what might â€Å"become† is caused by a â€Å"being†. However, unlike the foregoing arguments of Heraclitus’ and Parmenides, it is apparent that the reconciliation of the arguments were based on the thought that, indeed, there is a â€Å"first cause† that is never changing but rather causes the â€Å"second being† to become what it is today.   Note that both the initially mentioned thinkers do not believe on something that might have caused on object to exist. What could be more difficult in the understanding of this discourse is the process of analyzing concepts that flourished centuries apart and merging them into one critical explanation such that conflict resolution could be gained. References: __________. Philosophy Pages. In Britannica Internet Guide Selection. Retrieved April 11, 2008, from http://www.philosophypages.com/dy/p.htm#parm __________. (April 16, 2002). Pre-Socratic Era. Posted to http://everything2.com/index.pl?node_id=628825 Ballantyne, Paul F., Ph.D. History and Theory of Psychology: An Early 21st Century Student’s Perspective. (2008). Retrieved April 10, 2008, from www.comnet.ca/~pballan/section1(210).htm Goodman, Len E. (1992). Avicenna:Arabic Thought and Culture (pp 53-54). Routledge. Retrieved April 12, 2008, from http://books.google.com.ph/books?id=VJ6x-pcqMicC&pg=PA51&lpg=PA51&dq=resolving+the+argument+of+being+and+becoming&source=web&ots=gctA47HxTQ&sig=R0YNJ23QzZlvTpaLA5XclFgdKfY&hl=en#PPR5,M1 Rose, Jake. Being and Becoming. In Ezine Articles. Retrieved April 11, 2008, from http://ezinearticles.com/?Being-and-Becoming&id=148729   

State of the Union Reaction Paper essays

State of the Union Reaction Paper essays I feel that the State of the Union Address was filled with omissions and misrepresentations. Mr. Bush has many mirrors that dont show the true picture. He remind me of the carnival when you have the mirrors that make you look tall or skinny even ones that make you look fat. Just look into one of President Bushs mirrors and youll see just what he wants you to see. The said thing is that most people dont realize that when they walk away from the mirror reality is still there. In Mirror number one Mr. Bush tried to convince the nation that Social Security is headed for bankruptcy. The President has decided that his last term will be spent doing battle with President Roosevelt. Roosevelt proposed Social Security with the government as the guarantor of a safety net for the elderly, an idea that has been central to the New Deal creed that Democrats have hewed to since. Bush said he wanted to fundamentally alter it for younger workers, relying on the upward forces of financial markets to provide returns that the government never could. If young voters embrace the idea, then they might also embrace the GOP for years to come. The smoking gun is what President Bush omitted. He failed to mention that he was also proposing a fundamental shift in risk from government to the individual. If we are to be responsible for our own senior years then why not stop paying social security tax and invest on our own. He failed to mention that when money is diverted for investments that we will have to pay taxes some other way to support the current Social Security system. President Roosevelt knew that not all of us are good investor he might have even had a premonition on companies like Enron who would swindle the American people. Bush warned alarmingly of financial disaster. He spoke of the importance of personal accounts, which even his supporters say wouldn't help. The alarming disaster is that he is in charge of ou...

Advise Brian as to the application of EU law on the free movement of Essay

Advise Brian as to the application of EU law on the free movement of goods to this situation - Essay Example According to the case presented, Brian is a recognized trader in these items and has dealt them for years. Having sold the products for ten years, one would judge Brian as an experienced manufacturer and supplier of these materials. The free movement of goods treaty aims at restricting limitations to trade between member states of the European Union and compliance is key for a good relation for the different states. France as a state is part of the treaty and is bound by the treaty to comply and eliminate any restrictions that are developed either by its domestic suppliers of Power Saws or by legislation that seeks to create a discriminatory effect to the trade aspects of the EU. A number of cases exist on the aspects of discrimination in trade because of legislative effects of member states of the European Union. These include the following. According to a case as per Schmidberger, case Case C-112/00 on free movement of goods vs. protection of fundamental right1. According to this case, respect of fundamental rights of persons in the different states is part of the responsibility that the states have. The free movement of goods into and out of France needs not affect the livelihood of the people especially their health. Considering the health aspect attached to the case, the rights of protection on health aspects for the people is the mandate of the government that limits the exposure as per the goods in relation to the PSs. The free movement of goods relates to the removal of barriers from the market free trade to exist2. Brian is a manufacturer within the UK, which is part of the European Union. He manufactures goods that qualify for sale on the European Union and that explains the reasons why he has for ten years supplied the goods in UK and Germany markets and all these have appreciated his products. Among the facts involves the position of France as one of the European Union members,

Impact Of 14-19 Reform on SEN Students Essay Example | Topics and Well Written Essays - 1750 words

Impact Of 14-19 Reform on SEN Students - Essay Example As the report stresses in the last four years, there have been significant changes. It has become a normal part of life in schools in this country that some young people are studying and achieving recognised qualifications in vocational subjects before 16. New GCSEs in vocational subjects have been launched and the first group of young people have just succeeded in obtaining their qualifications. The Increased Flexibility Programme has given around 90,000 young people the opportunity to spend some time learning subjects in colleges which cannot easily be offered in schools. And from September 2004, for the first time, 14 year olds are pursuing Young Apprenticeships, giving them the chance to combine school studies with learning alongside skilled workers. Work-related learning is now a statutore requirement and the entitlement to enterprise education will be in place by September 2005. This discussion explores that in some parts of the country, designated as 14-19 pathfinder areas, the process has gone even further. Schools and colleges have worked with local authorities and the Learning and Skills Council (LSC) to offer young people a range of options which goes beyond what any one institution can provide and which is succeeding in attracting many more young people to learning. In other places, new sixth forms and colleges are being opened, boosting participation and choice.