Xem 1-20 trên 1167 kết quả Radiator
  • The cost of operating a building far exceeds the cost of constructing it, and yet until recently little attention was paid to the impact of solar radiation on the costs of heating, cooling and ventilation. And now that there has been a surge in interest in energy efficiency and solar design, architects and designers need a practical guide to the modelling and application of solar energy data.

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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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  • Preface This book is intended as a textbook for a course in radiation physics in aca-demic medical physics graduate programs. The book may also be of interestto the large number of professionals, not only physicists, who in their dailyoccupations deal with various aspects of medical physics and have a need toimprove their understanding of radiation physics.Medical physics is a rapidly growing specialty of physics, concerned withthe application of physics to medicine mainly, but not exclusively, in the ap-plication of ionizing radiation to diagnosis and treatment of human disease...

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  • Radiotherapy, also referred to as radiation therapy, radiation oncology or therapeutic radiology, is one of the three principal modalities used in the treatment of malignant disease (cancer), the other two being surgery and chemotherapy.

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  • Physics and engineering governing the applications of synchrotron radiation is based on enormous achievements during more than one hundred years in the filed of X-ray physics and technology. The contents of this book, starting with the very general aspects of synchrotron radiation investigated, have been developed by numerous scientist and experimentalist in this field during the past 20 years. The readers are recommended to visit the websites of major synchrotron facilities in the world, and update their knowledge of this rapidly changing and progressing field.

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  • Since the discovery of X rays by Roentgen in 1895, the ionizing radiation has been extensively utilized in a variety of medical and industrial applications. And it has also played crucial roles in development of modern sciences and technologies, as witnessed by more than 60 Nobel Prize winners awarded for achievements in atomic sciences and ionizing radiation-related researches.

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  • This book represents a collection of scientific articles covering the field of infrared radiation. It offers extensive information about current scientific research and engineering developments in this area. Each chapter has been thoroughly revised and each represents significant contribution to the scientific community interested in this matter.

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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 CAMBRIAN RADIATION, which commenced around 550 million years ago, arguably ranks as the single most important episode in the development of Earth’s marine biota. Diverse benthic communities with complex tiering, trophic webs, and niche partitioning, together with an elaborate pelagic realm, were established soon after the beginning of the Cambrian period. This key event in the history of life changed the marine biosphere and its associated sediments forever.

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  • The aim of this volume is threefold. It is intended, firstly, as a revision aid for students on Masters level degree courses in Radiation Science. These will already have received lectures at various levels of detail on most of the topics covered here. Experience has shown, however, that in preparing for examinations, especially oral examinations, students benefit from an opportunity to put details in the context of the whole. This I have tried to do by drawing attention to important connections that exist between topics treated in different chapters.

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  • Major advances have been accomplished in recent years in conformal and stereotactic techniques, dosimetry as well as in target volume concepts, and clinical studies have been performed. This peer-reviewed volume of Frontiers of Radiation Therapy and Oncology includes a selection of the important topics discussed at the meeting on ‘3-D Radiation Treatment: Technological Innovations and Clinical Results’ which was organized by the Department of Radiation-Oncology of the Technical University of Munich and focused on conformal and stereotactic radiotherapy in the treatment of tumors....

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  • The National Council on Radiation Protection and Measurements (NCRP) published Report No. 48, Radiation Protection for Medical and Allied Health Personnel in 1976. Many changes in medical practice and procedures involving ionizing radiation have occurred in the intervening 13 years. As a result, the Council determined to prepare this new report to supersede NCRP Report No. 48. The primary objective of this new report is to update the material to include new radiation sources used in medicine.

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  • ADC’s latest addition to its family of outside plant products, the Radiator II Above Ground HDSLx Repeater Housing, is a highly cost- effective outside plant enclosure for local loop electronics. With its advanced thermal management capabilities, the Radiator II extends the life of enclosed cards or repeaters and reduces costly truck rolls and maintenance. Radial placement of modular card cages permits efficient and predictable thermal transfer for uniform cooling. In addition, its unique design allows the heat to radiate externally, increasing the reliability of the enclosed electronics....

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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...

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  • Preface This is the second National Council on Radiation Protection and Measurements (NCRP) report that provides radiation protection guidance for astronauts working in low-earth orbit. The guidance in this Report supercedes the radiation exposure limit recommendations provided in NCRP Report No. 98 that was published in 1989. Readers may find some of the radiobiological information in Report No. 98 to continue to be relevant and of interest and, therefore, Report No. 98 will continue to be available from NCRP Publications.

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  • This Report emphasizes management’s responsibility in training employees, and presents criteria for identifying training requirements for different groups of employees. The type of personnel to be trained is treated and an extensive coverage of the design and development of radiation safety programs is provided. The learning environment and training aids are discussed and guidance on the audit of training programs is given.

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  • Tham khảo sách 'modern practices in radiation therapy edited by gopishankar natanasabapathi', y tế - sức khoẻ, y học thường thức phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả

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  • Document presentation of content: Radiation in gastroenterology, effects of radiation, radiation protection for staff and patients, Cascades - Management options taking available resources into account, special circumstances, Appendix - Radiation quantities and units

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  • (BQ) Part 1 book "Radiation treatment and radiation reactions in dermatology" presents the following contents: History of dermatologic radiotherapy with a focus on zurich; radiophysical principles, radiobiology of the skin, radiation therapy of nonmalignant skin disorders.

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  • (BQ) Part 2 book "Radiation treatment and radiation reactions in dermatology" presents the following contents: Superficial radiation therapy in an office setting, tumor staging in dermatology, treatment of precancerous lesions, electron therapy of skin carcinoma, cutaneous melanoma, side effects of radiation treatment,...

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