نتایج جستجو برای: decay

تعداد نتایج: 73625  

Journal: :محیط شناسی 0
مهدیه عسگری شاهی سید حسین هاشمی تقی عبادی

many constants and coefficient effect on the modeling results. in many cases, it is possible these constants and coefficients differ from their real values in the environment, but the modeling results adapted with real boundary conditions due to other factors adjustment during modeling. uncertainty analysis is a tool for assessing the effect of uncertainty of various factors on the modeling res...

B Mohammadi, H Mehraban,

We analyze three-body decays of and . Under the factorization approach, there are tree level diagrams for these decay modes and the transition matrix element of decay is factorized into a form factor multiplied by decay constant and form factor multiplied into weak vertices form factor. The transition matrix element of decay is also factorized into a form factor multiplied into weak vertic...

Journal: :iranian journal of public health 0
sh. jafari d. sedghi

118 dentistry students were studied to show the possible correlation between ph, concentration of ca2+, p3+, na+, and k+ of saliva and decay, missing, and filling tooth (dmft index). candidates were between 20 and 30 years old and had no background systemic disorders; medial and dental histories, age, sex, and dmft index were recorded in a questionnaire organized for this purpose. saliva sample...

Journal: :مدیریت اطلاعات سلامت 0
محمد کریم صابری کارشناس ارشد، علوم کتابداری و اطلاع رسانی، دانشگاه آزاد اسلامی- واحد علوم و تحقیقات تهران، تهران، ایران علیرضا اسفندیاری مقدم استادیار، علوم کتابداری و اطلاع رسانی، دانشگاه آزاد اسلامی- واحد همدان، همدان، ایران.

introduction: web citations (urls) are at risk of decay and can be easily fade because of the variable and unstable nature of the internet. so, the purpose of this research was to assess web citation accessibility and decay of articles published in journal of the medical library association (jmla). methods: in this applied– descriptive study, jmla articles (231) in a seven year period (from 200...

1999
Mark B. WISE Charles C. Lauritsen

The main goal of this talk is to review a new method’ for predicting, from QCD, the weak matrix elements that are needed to describe the semileptonic decays; B -+ DePe,,B + D’ec, and Ab + A,eti,. The method also relates B + pe& semileptonic decay to D + pZuc semileptonic decay. Since these are exclusive decays involving hadronic states nonperturbative strong interaction physics plays a role. Th...

راحمی, مجید , کریمی , زهرا ,

Pathogens are the most important factors inducing postharvest losses on citrus fruit. Experiments were conducted as a CRD with 4 replications on sweet lime (Citrus limetta) and Valencia orange (Citrus sinensis) in 2003 and 2004. Treatments were pure essential oils of clove and thyme and in 25% ethanol solution at concentrations of 0.1, 0.3 and 0.5% and imazalil (2 ml/l). Results indicated that ...

Objective(s): Haemostasis prevents blood loss following vascular injury. It depends on the unique concert of events involving platelets and specific blood proteins, known as coagulation factors. The clotting system requires precise regulation and coordinated reactions to maintain the integrity of the vasculature. Clotting insufficiency mostly occurs due to genetically inherited coagulation fact...

Journal: :jundishapur journal of health sciences 0
seyed mohammad mehdi hazavei department of public health, school of health, hamadan university of medical sciences, hamadan, ir iran malihe sohrabi vafa department of public health, school of health, hamadan university of medical sciences, hamadan, ir iran babak moeini ali reza soltanian department of epidemiology and biostatistics, school of health, hamadan university of medical sciences, hamadan, ir iran loghman rezaei school of dentistry, hamadan university of medical sciences, hamadan, ir iran

the evaluation of plaque and tooth decay represents the oral health status of society. lack of oral hygiene, can adversely affect the health of students. this study was designed with the aim to determine the oral- dental health status of the first grade guidance students in hamadan: using health belief model (hbm). this was a descriptive- analytical study which was conducted on 268 students of ...

Journal: :international journal of environmental research 2015
m.v. kumarasamy

prediction of spatial and temporal variation of water quality is vital for managing pollutantsdisposal into the rivers. depletion of dissolved oxygen (do) takes place due to the consumption of oxygen bymicrobes to digest bio-degradable pollutants which enter a water course. reaeration takes place in a specificrate depending on do deficit. many investigators have formulated models as an alternat...

The stones used in Pasargadae world heritage site are different in texture and color as well as chemical characters. Despite equal environment condition, they have been damaged in different forms. The aim of this study is Identification of stones compositions and decays through XRD and XRF analysis. Also, some surface investigations have been done by Digital Macroscopic and Scanning Electr...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید