نتایج جستجو برای: tld dosimeter

تعداد نتایج: 2849  

2016
Cristian Hesselman Giovane C. M. Moura Ricardo de O. Schmidt Cees Toet

We present a control plane for operators of Top-level Domains (TLDs) in the Domain Name System (DNS), such as “.org” and “.nl”, that enables them to increase the security and stability of their TLD by taking on the role of a threat intelligence provider. Our control plane is a novel system that extends a TLD operator’s traditional services and detects potential threats in the TLD by continuousl...

Journal: :Cell 1991
M J Shimell E L Ferguson S R Childs M B O'Connor

Mutations in the Drosophila tolloid (tld) gene lead to a partial transformation of dorsal ectoderm into ventral ectoderm. The null phenotype of tld is similar to, but less severe than decapentaplegic (dpp), a TGF-beta family member required for the formation of all dorsal structures. We have cloned the tld locus by P element tagging. At the blastoderm stage, tld RNA is expressed dorsally, simil...

Journal: :Occupational medicine 2011
N Jones H Burdett S Wessely N Greenberg

BACKGROUND Third Location Decompression (TLD) is the process through which personnel, returning from combat operations, begin to psychologically 'unwind'. Decompression comprises welfare activities, such as contacting home, beach events, social events, psycho-educational briefings and controlled re-introduction to alcohol. AIMS To assess the subjective utility of decompression by surveying al...

Journal: :iranian journal of radiation research 0
d. shahbazi-gahrouei department of medical physics and medical engineering, school of medicine, isfahan university of medical sciences, isfahan, iran s. nikzad

background: radioiodine therapy has proven to be an effective method in the treatment of patients with differentiated thyroid carcinoma after thyroidectomy. the scope of this study is to describe a method to obtain the dose of organs using medical internal radiation dosimetry (mird) method. at the end, the results of mird calculations were compared with thermoluminescent dosimeter (tld-100). ma...

Journal: :iranian journal of radiation research 0
f. ebrahimi tazehmahalleh department of medical physics, mashhad university of medical sciences, mashhad, iran h. gholamhosseinian radiotherapy center of emam reza hospital, mashhad, iran m. layegh radiotherapy center, omid hospital, mashhad, iran n. ebrahimi tazehmahalleh motahari clinic, khoy, azarbaijan, iran h. esmaily department of bio-statistics, mashhad university of medical sciences, mashhad, iran

background: the goals of the present research were to investigate the rectal dose during four chosen techniques of cervical cancer radiotherapy and to examine how accurately the treatment planning represents dose measurements, and it’s practicality for routine use as well as, to determine the homogeneity of dose in tumor volume. materials and methods: the study was carried out using a nepton 10...

2015
Clément Planchou Sylvain Clément Renée Béland Nia Cason Jacques Motte Séverine Samson

BACKGROUND Previous studies have reported that children score better in language tasks using sung rather than spoken stimuli. We examined word detection ease in sung and spoken sentences that were equated for phoneme duration and pitch variations in children aged 7 to 12 years with typical language development (TLD) as well as in children with specific language impairment (SLI ), and hypothesiz...

Alireza Karimian, Arman Rahmim Mahdi Nasri Nasrabadi Nematollah Ahmadi Jeshvaghane

Introduction: The CT machine utilizes a bowtie filter to shape the X-ray beam and remove lower energy photons. Configuration of this bowtie filter is complex and its geometry is often not available in detail. It causes the CT dose index (CTDI) be with the different values in measurement versus Monte Carlo simulation studies and other analytical calculations. It is important esp...

1999
Ramesh C. Tailor J. Francisco Aguirre William F. Hanson

The Radiological Physics Center (RPC) has been utilizing TLD to verify photon-beam output, and electron-beam output and energy for many years. The RPC currently monitors over 1200 institutions, monitoring 4000 photon and 3500 electron beams per year. Control TLD, irradiated on one specific Co-60 machine, are used for a performance check of our TLD system. Analysis of these data over 5 years, re...

ژورنال: :مجله دانشگاه علوم پزشکی شهرکرد 0
ژاله بهروز کیا zhale behrouz kia داریوش شهبازی daryoosh shahbazi

میزان موفقیت در پرتودرمانی به درستی و دقت میزان دز جذب شده در تومور بستگی دارد و معمولا به علت غیر عملی بودن اندازه گیری مستقیم دز جذب شده در بیماران از فانتوم استفاده می شود. در این تحقیق مقایسه دز تجویزی و دز جذبی در میدان های درمانی تنه در بیماری های هوچکین و آدنوکارسینومای رحم انجام پذیرفته است. روش درمانی را در این دو بیماری روی فانتوم اعمال کرده و دز جذبی در مرکز و نقاط مجاور تومورها با ا...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید