نتایج جستجو برای: background beta
تعداد نتایج: 1007463 فیلتر نتایج به سال:
Background and Objective: Alzheimer’s disease (AD) is a progressive neurodegenerative disorder, in which cortical and hippocampus neurons death is the main target of neurodegeneration. In addition to extracellular beta amyloid accumulation and the production of neural tangles, one of effective factors in the pathology of Alzheimer's disease is vascular injury in the elderly including disturbanc...
ABSTRACT Background: were made each week during year 2002 from samples of atmospheric aerosols filtered from theair at Tehran Nuclear Research Center.Measurement of gross beta activities and cosmogenic Beryllium-7 concentrationsMaterials and Methodssampler at the Nuclear Research Center meteorological station in Tehran (40contents of samples were determined with semiconductor gamma spectrometry...
Abstract Background: The fruit of pumpkin (Cucurbita maxima D.), one genus Cucurbita, family Cucurbitaceae, has antioxidant activity due to the content metabolites including amino acids, fatty alpha-tocopherol, beta-tocopherol, beta-carotene, beta-cryptoxanthin, and beta-sitosterol. carotenoids tocopherols in activity, reduces skin damage sun exposure, can slow down aging process. Objective: st...
تغییرات گسترده در حوزه شهری باعث تغییر در سبک زندگی و الگوی رفتاری ساکنین مناطق شهرنشین و خصوصاً شبکه روابط همسایگی شده است. به گونه ای که روابط بین همسایگان در زندگی شهری از هم گسسته شده و مردم کمتر درگیر روابط همسایگی و محله ای هستند. لذا این پژوهش به بررسی عوامل اجتماعی موثر بر میزان روابط همسایگی شهروندان ساکن شهر بابل می پردازد. جامعه آماری این مطالعه را کلیه خانوارهایی که در سال 93 ساکن شه...
Background: Hb A2 is elevated in subjects with beta thalassemia minor but small percent of carriers have normal Hb A2 with elevated levels of HbF (2-10%). This type of thalassemia is called delta beta thalassemia, and can be missed in pre-marriage hematologic consults or screening which leads to increased risk of child birth with beta thalassemia major. Materials and Methods: In this prospe...
Lorentz violation modifies the dispersion relation of gravitational waves (GWs), and induces birefringence anisotropy in propagation. Our study shows that can also activate multiple polarizations GWs. We use gauge invariants to investigate GWs bumblebee gravity model, obtain following results. (i) For a vector background ${b}^{\ensuremath{\mu}}$ with only nonzero temporal component ${b}^{t}$, t...
Background and purpose: The family physician is obliged to deliver qualified and comprehensive services according to the people`s need for provision, protection and improvement of their physical, mental, and social health. This study aimed at investigating patients’ satisfaction from urban family physician program in Mazandaran province, Iran, 2015. Materials and methods: In this cross...
Background: The formalism recommended by Task Group 60 (TG-60) of the American Association of Physicists in Medicine (AAPM) is applicable for β sources. Radioactive biocompatible and biodegradable 153Sm glass seed without encapsulation is a β- emitter with a short half life and delivers a high dose rate to the tumor in the millimeter range. In this work the dosimetry parameters of the ...
Background: Marine natural products contain a wide range of bioactive compounds with therapeutic properties that have revealed crucial properties in the treatment of some diseases. Some of these compounds have recently received considerable attention for drug discovery. In this study we examined the anti-angiogenic effect of saponin isolated from Holothuria leucospilota (sea cucumber) through e...
Background and aim The sport of volleyball requires constant contact of sports balls with the hands of athletes, Therefore, the sports balls used in volleyball can play an important role in the performance of athletes. therefore, the aim of the present study is to compare the impulse of the new BETA volleyball designed with other samples volleyballs using the Bertak model force plate made in th...
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