نتایج جستجو برای: radiation mitigation

تعداد نتایج: 270118  

2013
Richard Schuster Heinrich Römer Ryan R. Germain

Roads are a major cause of habitat fragmentation that can negatively affect many mammal populations. Mitigation measures such as crossing structures are a proposed method to reduce the negative effects of roads on wildlife, but the best methods for determining where such structures should be implemented, and how their effects might differ between species in mammal communities is largely unknown...

Journal: :international journal of foreign language teaching and research 0
shahram afraz department of english, qeshm branch, islamic azad university, qeshm, iran

this research chiefly focused on the application of mitigation strategies and traditional form of feedback in writing development of the fifth semester university students majoring in tefl and english translation fields based on vygotsky’s sociocultural theory in general and the notion of “zone of proximal development” in particular. to that end, this study relied on a pre-posttest experimental...

F. Bouzarjomehri, M.H. Ehrampoosh,

Background: Indoor radon gas (222Rn) has been recognized as one of the health hazards for human. Air radon comes mainly from basement soil and construction materials. Saghand region with rich uranium mines lies 180 km from Yazd, so the indoor radon concentration can be high. Yazd, with population of about 457000, is the biggest city near Saghand, thus, indoor gamma background radiation of Yazd ...

2008
P. T. Lang

Deuterium, impurity and impurity doped pellets are studied in light of their use for ELM and disruption mitigation. Based on ELM pace making studies at ASDEX Upgrade and JET, the minimum pellet size required to cause an ELM, has been estimated in ITER for the foreseen pellet velocities. Concerning disruption mitigation studies the number of runaways is determined for JET like plasmas for deuter...

2008
Melanie Berg

1 ABSTRACT Emerging technology is enabling the design community to consistently expand the amount of functionality that can be implemented within Integrated Circuits (ICs). As the number of gates placed within an FPGA increases, the complexity of the design can grow exponentially. Consequently, the ability to create reliable circuits has become an incredibly difficult task. In order to ease the...

Journal: :journal of biomedical physics and engineering 0
s. m. j. mortazavi professor of medical physics, department of medical physics and medical engineering, school of medicine, shiraz university of medical sciences, shiraz, iran. f. jamali master student, student research committee, school of medicine, shiraz university of medical sciences, shiraz, iran. j. moradgholi ph.d student of nanomaterials, department of materials engineering, isfahan university of technology, isfahan, iran. a. r. mehdizadeh assistant professor of medical physics, department of medical physics and medical engineering, school of medicine, shiraz university of medical sciences, shiraz, iran. r. faghihi radiation research center, mechanical engineering school, shiraz university, shiraz, iran. s. mehdizadeh radiation research center, mechanical engineering school, shiraz university, shiraz, iran.

background:  ramsar, a northern city in iran, lies on the coast of the caspian sea. this city has areas with some of the highest levels of natural radiation measured to date. the radon concentration in some areas of ramsar is up to 3700 bq m–3. on the other hand, due to high level of humidity, damp-proof barriers should be used in construction of new buildings in radon prone areas of this city....

2011
João Gomes Herbert R. Shea

We report on a study of the sensitivity of silicon MEMS to proton radiation and mitigation strategies. MEMS can degrade due to ionizing radiation (electron-hole pair creation) and non-ionizing radiation (displacement damage), such as electrons, trapped and solar protons, or cosmic rays, typically found in a space environment. Over the past few years there has been several reports on the effects...

2014
Jarvis A. Caffrey Carlos F. Gomez Luke L. Scharber

Radiation shielding analysis and development for the Nuclear Cryogenic Propulsion Stage (NCPS) effort is currently in progress and preliminary results have enabled consideration for critical interfaces in the reactor and propulsion stage systems. Early analyses have highlighted a number of engineering constraints, challenges, and possible mitigating solutions. Performance constraints include pe...

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