نتایج جستجو برای: پروتونهای mev 69 45
تعداد نتایج: 231471 فیلتر نتایج به سال:
Chromosome damage was assessed in human peripheral blood lymphocytes after in vitro exposure to the either Si (490 or 600 MeV/n), Ti (1000 MeV/n), or Fe (600, 1000, or 5000 MeV/n). LET values for these ions ranged from 51 to 184 keV/μm and doses ranged from 10 to 200 cGy. The effect of either aluminum or polyethylene shielding on the induction of chromosome aberrations was investigated for each...
A universal description of the hyperfine splittings (HFS) in bottomonium and the Bq (q 1⁄4 n, s, c) mesons is obtained with a universal strong coupling constant sð Þ 1⁄4 0:310 in a spin-spin potential. Other characteristics are calculated within the field correlator method, taking the freezing value of the strong coupling independent of nf. The HFS MðB Þ MðBÞ 1⁄4 45:5ð1Þ MeV, MðB sÞ MðBsÞ 1⁄4 4...
We have studied X-ray luminescence of KNbO3 single crystal. The 575 nm luminescence band has been studied in the temperature range of 15±45 K. The quenching parameters were found to be Q 12 3 meV and m 4 10 sÿ1. No luminescence has been observed under heavy ion excitation (Kr ions, 8.63 MeV/amu) even at 15 K. Ó 2000 Elsevier Science B.V. All rights reserved. PACS: 78.60.-b
Desigualdades socioeconómicas en el control mamográfico en mujeres españolas de 45 a 69 años de edad
We investigate the Coulomb breakup of $$^{11}$$ Be halo nuclei on a heavy target ( $$^{208}$$ Pb) from intermediate (70 MeV/nucleon) to low energies (5 within non-perturbative semiclassical and quantum-quasiclassical time-dependent approaches. The convergence computational scheme is demonstrated in this energy range including n + $$^{10}$$ low-lying resonances different partial spin states. hav...
The aim of the study was to elucidate the epidemiological characteristics of the sleep disturbances in population of Novosibirsk (Siberia, Russia). A randomized representative sample of 45–69-year-old residents of both genders (n = 4171) was studied in a framework of the HAPIEE study in Novosibirsk from 2003 to 2005. The sleep disturbances were studied by using the Jenkins Sleep Questionnaire (...
The proton-proton parity-violating longitudinal asymmetry is calculated in the lab-energy range 0–350 MeV, using a number of different, latest-generation strong-interaction potentials–Argonne v18, Bonn-2000, and Nijmegen-I–in combination with a weak-interaction potential consisting of ρand ω-meson exchanges–the model known as DDH. The complete scattering problem in the presence of parity-conser...
OBJECTIVE To investigate differences in snuff consumption, socio-demographic and psychosocial characteristics between baseline daily smokers who had remained daily smokers, become intermittent smokers or stopped smoking at the 1-year follow-up. DESIGN, SETTING, PARTICIPANTS AND MEASUREMENTS A population of 12 507 individuals aged 45-69 years, interviewed at baseline in 1992-94 and at a 1-year...
جو زمین از لایه های مختلف تشکیل شده است که این تقسیم بندی لایه ها بر اساس ویژگی های فیزیکی و شیمیایی و ارتفاع سطح زمین می باشد؛ در این پژوهش قصد داریم یک باریکه ی مدادی از پروتون با انرژی e=?10?^5 mev که در حد انرژی پروتون های خورشیدی است، را به لایه های مختلف جو بتابانیم که در نتیجه ی آن واکنش های زیادی در بین این لایه ها به وقوع می پیوندد.
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