نتایج جستجو برای: طبقهبندی ژل o15
تعداد نتایج: 6549 فیلتر نتایج به سال:
Background: In many developing countries, the risk of contracting a food-borne disease is high after consuming contaminated ready-to-eat Street-Vended Foods (SVFs). The main objective of this research was to assess the microbiological quality of SVF groups sold in the Johannesburg Metropolis, South Africa. Methods: A stratified random sampling procedure was used for collecting the ready-to-eat...
A large experimental literature has investigated the determinants of trust using variants of the so called trust game. However, a lot of ambiguity remains regarding the definition of what one is trusting: one extreme view is that since there are no explicit promises or guarantees made in the trust game, cheating is not defined and therefore trust is not implied. We address this concern by askin...
This paper examines whether an expansion in the supply of public preschool crowds out private enrollment, using rich data for municipalities in Brazil from 2000-2006, where federal transfers to local governments change discontinuously with given population thresholds. Results from a regression-discontinuity design reveal that larger federal transfers lead to a significant expansion of local pub...
Studies examining in utero health effect of maternal fasting during Ramadan assume that parents do not selectively time birth relative to Ramadan. In Matlab, a region in Bangladesh, family planning program started in 1977 where women in treatment areas received free contraceptives door to door but control areas were not part of the program. Both treatment and control areas were very similar in ...
Article history: Received 6 January 2012 Revised 20 August 2012 Available online 17 October 2012 JEL classification: F16 F22 F66 J61 O15
Life traumatic experiences are major health problems in different communities. Early trauma exposures such as physical and sexual abuse, and midlife traumatic events like exposing to disasters are predisposing and precipitating risk factors for many psychiatric disorders, although many people facing to trauma may not show any problematic symptoms and are quite resilient. Neuropsychiatric eviden...
life traumatic experiences are major health problems in different communities. early trauma exposures such as physical and sexual abuse, and midlife traumatic events like exposing to disasters are predisposing and precipitating risk factors for many psychiatric disorders, although many people facing to trauma may not show any problematic symptoms and are quite resilient. neuropsychiatric eviden...
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