Genetic Enhancement Essays - Molecular Biology, Biotechnology

Genetic Enhancement Complaining about What is scarring people in these days is the possibility of cloning discoveries. At this point the question is: how this discovery will affect our society? And what is the scientists goal?. We all are worried about this discovery because what come out from scientists it is not really reassuring. Even scientists don't know what will be the long- term's effects of ?playing? with genes if they might have bad results on patient's descendants. Moreover, by altering the natural course of nature on people, making them thinner, healthier we might increase marginalizazion and discrimination of people who can't or just don't want to be genetically enhanced. In response to pressure from society, We should stop and think before allowed scientists to go on without strict controls. All the attention these days to concerns about human cloning has pushed other controversial areas of medical science into shadows. The first attempts are to carry out genetic enhancement in humans could soon be under way. The goal of genetic enhancement is not to treat people with diseases or abnormalities, but to make healthy people more attractive. To do so, it would employ the recombinant- DNA techniques from monocular biology that emerged in the 1970s. This permits scientists to remove individual genes from one organism and introduce them into another, even on another species. Although we belief that The therapy aims to overcome health problems by giving the effected individuals the normal- or functioning- gene. Allowing genetic enhancement in more than a few very special cases poses real problems. First, the risks to the patient at present are very great compared with the possible benefits. We sill know very little about how they act- a single gene can have multiple effects in different parts of the body. Moreover, genes do not act alone: the ire effects are amplified, demitted, or counterbalanced by others genes in ways that we do not understand. We might be willing to expose a patient to great risks to treat grave disease. Subjecting someone risk is ethically unacceptable if the person seeking treatment is healthy. Second, genetic enhancement may pose risks to others, particularly to patient's offspring. We do not know whether gene therapy might contaminate the genetic material of the gonads. Because of this, genetic enhancement might create serious enhancement unacceptably high when weighed against the possible benefits. Genetic enhancement might reinforce irrational societal prejudices. People who do not wish to be genetically enhanced eventually night be marginalized or suffer discrimination. We should not simply throw up hands and lament that nothing can be done to stop genetic enhancement. Instead, we need to decide what enhancements we consider unacceptable, and to prevent their use. A helpful model is the moratorium that scientists imposed on themselves in the early 197's, when they had just discovered how to manipulate genetic material trough recombinant DNA techniques. If we do not establish some guidelines now, we are likely to find ourselves focusing only on the short term interests of an individual patient. Allowing the anxieties and biases of the moment to blur our judgement. Nor should we leave decisions about genetic enhancement to the whims of the market place or in the hands of patients or families. This may be too easily swayed by messages in the media about what standards of appearance, and behavior are acceptable. We need to decide what enhancements we consider unacceptable, and prevent their use. Furthermore sometimes we forget the real importance of a human life, too often scientists treat human as animals because of their experiments. We all want to live in a good world preferably without any kind of illness, but if this means destroy our nature may be is time to think watts we are doing and were we are going to end. Medicine exists since the humane race exists, but in the past was different; it was an armless medicine created in order to take care of real ill people. On the other hand whiteout out the progress in medicine we won't survey in this way. We can certainly affirm that we have a cure for almost everything: beginning from the fever and ending. Bibliography: .personal notes

Photography Essays (4782 words) - Single-lens Reflex Camera, Camera

Photography Essays (4782 words) - Single-lens Reflex Camera, Camera Photography Photography is a technique of producing permanent images on sensitized surfaces by means of the photochemical action of light or other forms of radiant energy. In today's society, photography plays important roles as an information medium, as a tool in science and technology, and as an art form, and it is also a popular hobby. It is essential at every level of business and industry, being used in advertising, documentation, photojournalism, and many other ways. Scientific research, ranging from the study of outer space to the study of the world of subatomic particles, relies heavily on photography as a tool. In the 19th century, photography was the domain of a few professionals because it required large cameras and glass photographic plates. During the first decades of the 20th century, however, with the introduction of roll film and the box camera, it came within the reach of the public as a whole. Today the industry offers amateur and professional photographers a large variety of cameras and accessories. See also Motion Picture. The Camera and Its Accessories Modern cameras operate on the basic principle of the camera obscura (see Historical Development, below). Light passing through a tiny hole, or aperture, into an otherwise lightproof box casts an image on the surface opposite the aperture. The addition of a lens sharpens the image, and film makes possible a fixed, reproducible image. The camera is the mechanism by which film can be exposed in a controlled manner. Although they differ in structural details, modern cameras consist of four basic components: body, shutter, diaphragm, and lens. Located in the body is a lightproof chamber in which film is held and exposed. Also in the body, located opposite the film and behind the lens, are the diaphragm and shutter. The lens, which is affixed to the front of the body, is actually a grouping of optical glass lenses. Housed in a metal ring or cylinder, it allows the photographer to focus an image on the film. The lens may be fixed in place or set in a movable mount. Objects located at variou s distances from the camera can be brought into sharp focus by adjusting the distance between the lens and the film. The diaphragm, a circular aperture behind the lens, operates in conjunction with the shutter to admit light into the lighttight chamber. This opening may be fixed, as in many amateur cameras, or it may be adjustable. Adjustable diaphragms are composed of overlapping strips of metal or plastic that, when spread apart, form an opening of the same diameter as the lens; when meshed together, they form a small opening behind the center of the lens. The aperture openings correspond to numerical settings, called f-stops, on the camera or the lens. The shutter, a spring-activated mechanical device, keeps light from entering the camera except during the interval of exposure. Most modern cameras have focal-plane or leaf shutters. Some older amateur cameras use a drop-blade shutter, consisting of a hinged piece that, when released, pulls across the diaphragm opening and exposes the film for about 1/30th of a second. In the leaf shutter, at the moment of exposure, a cluster of meshed blades springs apart to uncover the full lens aperture and then springs shut. The focal-plane shutter consists of a black shade with a variable-size slit across its width. When released, the shade moves quickly across the film, exposing it progressively as the slit moves. Most modern cameras also have some sort of viewing system or viewfinder to enable the photographer to see, through the lens of the camera, the scene being photographed. Single-lens reflex cameras all incorporate this design feature, and almost all general-use cameras have some form of focusing system as well as a film-advance mechanism. Camera Designs Cameras come in a variety of configurations and sizes. The first cameras, ?pinhole? cameras, had no lens. The flow of light was controlled simply by blocking the pinhole. The first camera in general use, the box camera, consists of a wooden or plastic box with a simple lens and a drop-blade shutter at one end and a holder for roll film at the other. The box camera is equipped with a simple viewfinder that shows the extent of the picture area. Some

Biomedical ethics Essay Example | Topics and Well Written Essays - 750 words - 2

Biomedical ethics - Essay Example Joe fulfills the age requirement of Medicaid’s rationing scheme because he is below age 65 and unless he did not fulfill its other fundamental requirements, the Medicaid official could have denied him benefits unfairly (Beauchamp & Childress, 2013). Dr. Adams fulfilled the requirements of the biomedical principle of beneficence when she went out of her way to attend to Joe while at the scene of the accident. She demonstrated the principle of respect for persons when she attempted to rescue Joe who was incapable of self-determination immediately after the accident. Both Dr. Adams and the emergency personnel in the ambulance demonstrated non-maleficence when they helped save Joe’s life because they did not harm him even when his condition exposed him to mistreatment and harm. Facts provide that Dr. Benson had performed substandard surgeries before Joe’s case. If indeed the Southwest Hospital knew about Benson’s quality of service, it was immoral to have allowed him to operate on Joe (Beauchamp & Childress, 2013). The motorist who cut Joe off might have been reckless. The motorist should have been cautious when driving knowing that obstructing others on the traffic could cause an accident. Recklessness implies that the actor (the other motorist) foresaw the danger that could accrue from his action but did not take precautions to remove the danger. There was an element of negligence in the way that Southwest Hospital handled Joe’s case. Negligence embodies the issues of duty, breach, causation, and damages. Given Joe’s condition after the accident, the hospital had the duty to protect and rescue his life. Assigning Dr. Benson to Joe’s operation breached the hospital’s duty to protect their patient’s (Joe’s) life and wellbeing. It is possible that Dr. Benson’s lack of care during operation is what led to Joe’s hemorrhage and hospitalization thereafter. The hospital could therefore be charged for the