نتایج جستجو برای: استرانسیوم 90

تعداد نتایج: 212494  

Journal: :Computers in Physics 1996

2009
Dusan Galanda Pavol Rajec Lubomir Mátel Olga Rosskopfová Silvia Dulanská

The reliable and quantitative measurement of radionuclides is important in order to determine environmental quality and radiation safety, and to monitor regulatory compliance. We examined soil samples from Podunajske Biskupice, near the city of Bratislava in the Slovak Republic, for the presence of several natural ((238)U, (232)Th, (40)K) and anthropogenic ((137)Cs, (90)Sr, (239)Pu, (240)Pu, (2...

Journal: :Radiation protection dosimetry 2007
C Hurtgen A Andrasi M R Bailey A Birchall E Blanchardon V Berkovski C M Castellani R Cruz-Suarez K Davis H Doerfel B Leguen I Malatova J Marsh J Zeger

As part of the EU Fifth Framework Programme IDEAS project 'General Guidelines for the Evaluation of Incorporation Monitoring Data', and in collaboration with the International Atomic Energy Agency, a new intercomparison exercise for the assessment of doses from intakes of radionuclides was organised. Several cases were selected, to cover a wide range of practices in the nuclear fuel cycle and m...

2007
Ian McLean Haidee Lorrey Josep Colomer

We take institutions seriously as both a rational response to dilemmas in which agents found themselves and a frame to which later rational agents adapted their behaviour in turn. Medieval corporate bodies knew that they needed choice procedures. Although the social choice advances of ancient Greece and Rome were not rediscovered until the high middle ages, the rational design of choice institu...

Journal: :Mathematical Social Sciences 2001
Carmen Herrero Antonio Villar

This paper provides a comparative analysis of some classical solutions to bankruptcy problems from an axiomatic viewpoint. These rules are the constrained equal-awards rule, the constrained equal-losses rule, the proportional rule and the Talmud rule. The purpose of this study is to facilitate the understanding of their differences and to clarify the type of situations in which each of these ru...

در این پژوهش کاتیون استرانسیوم(II) توسط اگزروژل به دست آمده از تترااتیل اورتو سیلیکات از محلول آبی در یک سامانه ناپیوسته حذف شد. مقدارهای جذب با تغییر پارامترهای زمان، pHمحلول، دما، مقدار جاذب و مقدار اولیه یون فلزی بررسی شد. هم‌دماهای جذبی لانگمویر، فروندلیچ، تمپکین و دوبینین ـ رادشکویچ بررسی شد. مطالعه ‌ها نشان دادند که داده ه...

دیلمقانی, سعید برادران , رجبی, کامران ,

In this research work a rather new method was used to detect trace elements of small quantities. For this, X-ray intensity enhancement effect and standard samples of BAS Company were employed. In the standard sample a small amount of Rubidium was present, which by adding some quantities of SrCo3 to the sample the XRF characteristic peaks of Rubidium were enhanced. This effect proved to be appli...

2011
Rony Patel Jennifer Jacobs Rochel Gelman

Arithmetic, along with all mathematics, is built on axioms. Mathematical education, however, favors mathematical models or algorithms without appeal to the axioms they depend on. Our series of studies demonstrate adult subjects’ inability to take advantage of the knowledge embodied in arithmetic axioms. It is likely that students’ ability to master generative proofs is related to the reliance o...

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