Radiation dose

Xem 1-20 trên 127 kết quả Radiation dose
  • Tuyển tập các báo cáo nghiên cứu về y học được đăng trên tạp chí y học Radiation Oncology cung cấp cho các bạn kiến thức về ngành y đề tài: The effect of bioequivalent radiation dose on survival of patients with limited-stage small-cell lung cancer...

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  • Tuyển tập các báo cáo nghiên cứu về y học được đăng trên tạp chí y học Radiation Oncology cung cấp cho các bạn kiến thức về ngành y đề tài: "A phase I radiation dose-escalation study to determine the maximal dose of radiotherapy in combination with weekly gemcitabine in patients with locally advanced pancreatic adenocarcinoma...

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  • Tuyển tập các báo cáo nghiên cứu về y học được đăng trên tạp chí y học Radiation Oncology cung cấp cho các bạn kiến thức về ngành y đề tài: " A prospective study of differences in duodenum compared to remaining small bowel motion between radiation treatments: Implications for radiation dose escalation in carcinoma of the pancreas...

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  • Tuyển tập các báo cáo nghiên cứu về y học được đăng trên tạp chí y học Radiation Oncology cung cấp cho các bạn kiến thức về ngành y đề tài: " Influence of different treatment techniques on radiation dose to the LAD coronary artery...

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  • (BQ) Part 2 the book "Clark's essential physics in imaging for radiographers" presents the following contents: Principles of radiation detection and image formation, image quality, radiation dose and exposure indicators, image display and manipulation in medical imaging, radiation protection and safety,...

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  • (BQ) Part 1 book "Cone beam computed tomography" presents the following contents: History of x-ray computed tomography, acquisition of projection images, reconstruction algorithms, image simulation, radiation dose, 3D image processing, analysis, and visualization

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  • Gamma rays were discovered by Villard more than a hundred years ago. Rutherford gave the name -rays to the electrically neutral radiation emitted by the naturally occurring radioactive materials. Gamma rays are electromagnetic radiation, photons, which arises due to energy changes in the nucleus. It does not appear as an independent form of radiation, but it follows  and β decay, in those cases when the newly created core of the offspring is found in the excited state.

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  • The NCRP has long mcog&ed the need for a clear assessment of the magnitude of doses from various souroes of radiation to which the population of the U.S. is ocpo9ed. In anticipation of the need to gather data for input into this process five as&sament committees, each adhing a different source category, wem established, first in 1971 and then reestablished in 1986. NCRP reports assessing exposum from natural background, consumer products, and nuclear power gene ation have recently been published (NCRP, 1987% 1987b. 1987~)...

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  • The NCRP has long recognized the need for a clear assessment of the magnitude of doses from various sources of radiation to which the population of the U.S. is exposed. In anticipation of the need to gather data for input into this process, five assessment committees, each addressing a different source category, were established. NCRP reports assessing exposures from natural background, consumer products, nuclear power generation, and diagnostic medical radiation have been published (NCRP, 1987a,b,c,d, NCRP, 1989)....

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  • Radiation, Health and Society The Nuclear Phenomenon Radioactive Decay Radiation all Around Us Radiation and Living Tissue Radiation Protection High Doses Nuclear Power Chernobyl - A Case Study Conclusion...

    pdf47p lalalthanh 19-10-2012 23 2   Download

  • How people deal with risks is one of the most interesting aspects of the human condition. Perceptions of risk are complex, and people deal with risks in different, often irrational, ways. Young, healthy people consider themselves immortal and immune from long-term, degenerative diseases. As a consequence they engage in risky dietary and smoking behaviors that enhance the chances of such diseases in later life.

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  • The quality assurance teams and managers supported the evolution of the breast screening programme locally, and professional quality assurance groups were developed with the relevant associations and royal colleges at a national level. In 1990, a new post of national coordinator of the NHSBSP was established, based at one of the regional heath authori- ties. Mrs Julietta Patnick at the Trent Region in Sheffield was appointed, and she is now the Director of the NHS Cancer Screening Programmes, which includes the NHSBSP.

    pdf432p taisaokhongthedung 07-01-2013 29 6   Download

  • Overall development objectives may include employment creation, productivity, competitiveness, GDP growth, price stability; and external payments equilibrium; as well as social, sectoral and regional equality including poverty reduction. Positioning SME development policy against national targets makes it easier to co-ordinate the relevant activities of different ministries and to prioritise goals. It also establishes the basis for a tighter process of decision-making.

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  • Tuyển tập các báo cáo nghiên cứu về y học được đăng trên tạp chí y học Radiation Oncology cung cấp cho các bạn kiến thức về ngành y đề tài: A comparison of dose-response characteristics of four NTCP models using outcomes of radiationinduced optic neuropathy and retinopathy...

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  • The cellular damage due to the hypoxi/re-oxigenative stress may trigger the production of free radicals with consequent destabilization of the cell membranes (Calandrella et al., 2010). As a matter of fact literature data show that the ischemic insult at retinal level activates iNOS which leads to the production of nitrogen oxide (Goldstein et al., 1995; Geyer et al., 1995): this compound is cytotoxic at high concentration and causes lipid peroxidation (Crow et al., 1996; Ullrich et al., 2000).

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  • In addition, the federal government pays administrative expense subsidies to insurance companies as an allowance that is intended to cover their expenses for selling and servicing crop insurance policies. In turn, insurance companies use these subsidies to cover their overhead expenses, such as payroll and rent, and to pay commissions to insurance agencies and agents. Companies also incur expenses associated with verifying—adjusting—the amount of loss claimed. These expenses include, for example, loss adjusters’ compensation and their travel expenses to farmers’ fields.

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  • The components of effectiveness are organized around eight clinical areas. Naturally, some measures will cross components; for example, receipt of discharge instructions for heart failure is related to effectiveness of heart disease care as well as care coordination. For the purposes of this document, measures with clinical context are presented with the effectiveness measures. Other measure sets describe health care delivery and systems issues and are discussed together.

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  • Poverty is higher in remote rural areas and in inner cities, but the rural elderly are much more likely to be poor than those living in urban areas. Thirteen percent of rural elders 60 years and older were poor in 2000, compared with nine percent of elders living in a metro area [20]. Thus we expect to find the most evidence of impeded access for the poor elderly who reside in rural areas. We interact the proportion of elderly in poverty with the proportion in rural areas to include in the model.

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  • Besides assembling a wide assortment of products, the wholesaler also may extend short-term credit to buyers. Often he assists retailers in solving merchandising problems. Sometimes wholesalers prepackage products. Retailing is the final link in the distribution chain. Several hundred thousand retail foodstores and additional thousands of department, dry goods, and cigar stores and other specialty stores throughout the country satisfy day-to-day consumer requirements for food and other products of agricultural origin. ...

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  • The commercial success of independent youth-oriented pictures such as those of AIP was matched by that of some more edgy and disturbing independent productions in the same generic territory, especially horror.

    pdf94p khanhchilam 01-04-2013 16 5   Download

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