Asteroid Impact Discussion Essay Example | Topics and Well Written Essays - 250 words

Asteroid Impact Discussion - Essay Example Accordingly, â€Å"the pieces could still hit Earth, and we might not have enough firepower to do serious damage.† (Atkinson, 2009) Secondarily, â€Å"a nuclear explosion could reroute a space rocks trajectory clear of Earth;† (Keim, 2009) but, from the other perspective, this would need to be done decades before the asteroid reached us (Atkinson, 2009). Thirdly, it could be annihilated with an assistance of â€Å"direct beams of concentrated sunlight to the surface of an appropriately icy asteroid.† (Keim, 2009) Except these ones, there are also another variants that have their own pros and cons as well. For example, â€Å"electric propulsion,† â€Å"gravity tractor,† â€Å"solar salls,† etcetera. (Atkinson, 2009) As for me, and it will be going on as an overall conclusion, that among these variants of annihilating asteroids the aforesaid three are the most vital: direct nuclear explosions, nearby nuclear explosions, and laser sublimation. To conclude with, first one needs too much nuclear power embodied in a bomb but theretically it sounds effectively; furthermore, second one is needed to be concentrated very carefully on the asteroids orbit to push it off from the Earth; finally, â€Å"beams of the concentrated sunlight† could be regarded as very sufficient in case that average temperature of the asteroid is not higher that of â€Å"sunlight;† if not, they will only increase the overall temperature of the

Genetics and breast cancer Research Paper Example | Topics and Well Written Essays - 2500 words

Genetics and breast cancer - Research Paper Example Treatment plans have modified from time to time with the aim to conserve as much as normal breast tissue and reduce the recurrence rates. Different strategies have evolved ranging from modified radical mastectomy to radiation to hormonal and chemotherapy. Having a varied prognosis depending on the histo pathological appearance as well as the grading, staging and receptor status of the breast carcinoma. Early diagnosis and treatment yields better results, while late diagnosis and treatment results in widespread disease. Breast cancer one of the most common and ancient carcinoma in female occurring most commonly in postmenopausal woman and in individuals with BRCA mutation. The screening, diagnosis and treatment are rapidly changing areas with more and more advances in the diagnostic tests and resulting specific therapies depending on the histo-pathological and bio-markers. From diagnosis to treatment it needs a multidisciplinary approach with physicians, radiologists, oncologists, histo-pathologists on board. This article focuses on the etiological factors, genetic mutation, diagnosis, treatment plans and prognostic factors. . Breast cancers being more common in women but can also occur in men and have a poor prognosis as in men there is always delay in diagnosis as opposed to women. Unlike other carcinomas it can be picked up early as it presents with a lump in the breast, for the same reason it has also been documented as an ancient disease as unlike other carcinomas it could become visible and c ould be picked up as a lump in breast. If we look at the above risk factors, most of them can be explained by the fact that excessive exposure to sex hormones can lead to breast cancers. Early onset of menses and late menopause, both of these cases leads to over exposure to sex hormones (same can be explained with obesity). One of the studies being carried out concluded that