نتایج جستجو برای: background beta

تعداد نتایج: 1007463  

Journal: :Physical review 2021

We propose a new approach to constant-roll warm inflation as generalization of inflation. Based on the $\beta$-function formalism, it is shown that models with natural end fall into universality classes defined by three different types $\beta$-functions, under assumption radiation energy density quasi-stable. Given completely specified and dissipation coefficient ratio, we investigate whether o...

Majidreza Haghzare Marjan Saeedi, Parvaneh Vessal Soheila Nasiri, Zahra Asadi-Kani, Zohreh Tehranchinia

Background: Malignant melanoma is the most aggressive form of skin cancer. In contrast to other tumors, the role of estrogen in the initiation and progression of melanoma remains unclear. The aim of this study was to evaluate estrogen receptor beta protein expression in human melanoma tissues and in the benign melanocytic lesions. Method: Twenty-one patients, 11 with cutaneous melanoma and 10 w...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس 1380

در دنیا مناطقی وجود دارند که ساکنین آنها در معرض پرتوهای طبیعی زمینه بالا هستند. این مناطق به ‏‎high background radiation areas hbras‎‏ ، معروف می باشند. از جمله این مناطق می توان به گوارا پاری در برزیل ، کرالا در هند ، نواحی از آمریکا و یانگ جیانگ در چین اشاره کرد. در ایران نیز مناطق با پرتودهی زمینه بالا مشاهده شده است . رامسر یکی از این مناطق است .

Journal: :Diabetologie Und Stoffwechsel 2023

Background Beta cell dysfunction and death are critical steps in the development of both type 1 2 diabetes (T1D T2D), but underlying mechanisms incompletely understood. Activation essential tumor suppressor transcription factor P53 was linked to beta vitro has been reported several mouse models cells humans with T2D. Therefore, we investigated specific role dysfunction, vivo.

Journal: :journal of research in medical sciences 0
sezaneh haghpanah hematology research center, shiraz university of medical sciences, shiraz, iran maryam davani hematology research center, shiraz university of medical sciences, shiraz, iran behrang samadi hematology research center, shiraz university of medical sciences, shiraz, iran afsaneh ashrafi a hematology research center, shiraz university of medical sciences, shiraz, iran. mehran karimi prof. of pediatric hematology ,hematology research center

background: beta-thalassemia is considered to be the most frequent hereditary blood disorder worldwide. lipid abnormalities have been detected in different types of beta-thalassemia . the aim of this study is to assess the lipid profiles in beta-thalassemia major (btm) and beta-thalassemia intermedia (bti) patients in southern iran. methods: the study group consisted of 55 btm patients and 50 b...

Journal: :iranian journal of radiation research 0
f. arkian iranian nuclear regulatory authority, national radiation protection department, tehran, iran j. amidi iranian nuclear regulatory authority, national radiation protection department, tehran, iran

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...

Journal: :iranian journal of radiation research 0
f. taghdiri department of nuclear engineering, science and research branch, islamic azad university, tehran, iran m. sadeghi agricultural, medical and industrial research school, nuclear science and technology research institute, karaj, iran s.h. hosseini department of nuclear engineering, science and research branch, islamic azad university, tehran, iran m. athari department of nuclear engineering, science and research branch, islamic azad university, tehran, iran

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 seed for ...

Journal: :iranian journal of pathology 2012
indranil chakrabarti swapan kumar sinha nilanjana ghosh bidyut krishna goswami

background and objectives: beta-thalassemia continues to be a cause of significant burden to the society particularly in the poorer developing countries. although sophisticated methods of screening have become available, a hunt for a cheap, rapid, objective screening method still remains elusive. thus, the objectives are to study the validity of naked-eye-single-tube-osmotic-fragility-test (nes...

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