نتایج جستجو برای: beta radiation

تعداد نتایج: 423131  

Journal: :iranian journal of radiation research 0
a.a. mowlavi physics department, sabzevar tarbiat moallem university, sabzevar, iran a. afzali physics department, sabzevar tarbiat moallem university, sabzevar, iran n. afzali physics department, imam khomeini university of sabzevar, sabzevar, iran

background: skin cancer can be treated by various methods. electron radiotherapy has been a useful therapeutic modality in the treatment of skin cancers in areas which are difficult to cure by other methods. depth dose distribution of 166ho using varskin2 code is presented in this work. material and methods: depth dose distribution of 166ho was calculated, using varskin2 code by adding of 166ho...

Journal: :Materials advances 2021

Perovskite halides hold great potential for high-energy radiation detection. Recent advancements in detecting alpha-, beta-, X-, and gamma-rays by perovskite are reviewed an outlook on the device performance optimization is provided.

Journal: :Circulation 2002
Christoph Hanefeld Schgofa Amirie Dieter Borchardt Peter Grewe K-M Müller Maria Kissler Andreas Mügge

BACKGROUND Intravascular brachytherapy is being applied more and more in patients with coronary artery disease for the prevention of restenosis subsequent to balloon angioplasty, in particular after stent implantation. Several radiation sources (beta- and gamma-emitters) are available in clinical routine. It was the purpose of this study to compare the radiation doses at the level of the advent...

ژورنال: سنجش و ایمنی پرتو 2020

The radioactive contamination measurement is essential in nuclear facilities. Monitoring of low level alpha and beta contamination is possible using light detectors high efficiency. Due to the fact that many detectors canchr('39')t simultaneously discriminate alpha, beta and gamma rays; among existing methods, phoswich detectors would be appropriate option to measure different radioactive conta...

Journal: :Cancer research 2003
Diane C Cabelof ZhongMao Guo Julian J Raffoul Robert W Sobol Samuel H Wilson Arlan Richardson Ahmad R Heydari

The base excision repair pathway (BER) is believed to maintain genomic integrity by repairing DNA damage arising spontaneously or induced by oxidizing and alkylating agents. To establish the role of DNA polymerase beta (beta-pol) in BER and beta-pol-dependent BER in maintaining genomic stability, we have measured the impact of a gene-targeted disruption in the beta-pol gene on DNA repair capaci...

Journal: :Optics letters 1984
M Aldén A L Schawlow S Svanberg W Wendt P L Zhang

By using three-photon excitation at 291.7 nm of the n = 4 hydrogen level and observing Balmer-beta radiation at 486.1 nm, hydrogen atoms in an atmospheric C(2)H(2)/O(2) flame have been detected. Other schemes for hydrogen detection were also tried, and the results are discussed.

2013

Radiation affects human life in disparately subtle and dramatic ways. For instance, nuclear reactions in the Sun produce light and heat that are essential for human existence, while recent research implies that the flux of cosmic ray particles may also have an impact on humans’ daily lives. According to the EPA the average American receives 3100 micro Sieverts (μ Sv) of radiation per year, well...

Introduction: After the lead poisoning outbreak came to light in Zamfara State, Nigeria, people living near gold mines were worried about environmental safety, especially drinking water quality. This study examined the gross alpha and gross beta activity concentrations in groundwater in different locations of Anka, Zamfara State, Nigeria, to measure the possible radiation dose and potential hea...

Journal: :American heart journal 2005
Seung-Whan Lee Seong-Wook Park Myeong-Ki Hong Young-Hak Kim Ki Hoon Han Dae Hyuk Moon Seung Jun Oh Cheol Whan Lee Jae-Joong Kim Seung-Jung Park

BACKGROUND Rotational atherectomy (RA) and cutting balloon angioplasty (CBA) have been shown to effectively dilate in-stent restenosis (ISR). It is not known, however, which of these technique, when followed by beta-radiation, is more effective. Therefore, we performed a prospective randomized study comparing RA and CBA before beta-radiation therapy for diffuse ISR. METHODS Patients with diff...

2010
Elisa Bordón Luis Alberto Henríquez-Hernández Pedro C Lara Ana Ruíz Beatriz Pinar Carlos Rodríguez-Gallego Marta Lloret

Head and neck cancer is treated mainly by surgery and radiotherapy. Normal tissue toxicity due to x-ray exposure is a limiting factor for treatment success. Many efforts have been employed to develop predictive tests applied to clinical practice. Determination of lymphocyte radio-sensitivity by radio-induced apoptosis arises as a possible method to predict tissue toxicity due to radiotherapy. T...

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