نتایج جستجو برای: different technologies

تعداد نتایج: 1924763  

2003
M Spriggs T Charles

In this paper we identify and evaluate arguments for and against offering assisted reproductive technologies (ART), specifically IVF, to HIV discordant couples (male partner HIV positive, female partner HIV negative). The idea of offering ART to HIV discordant couples generates concerns about safety and public health and raises questions such as: what is an acceptable level of risk to offspring...

Journal: :Journal of medical ethics 2003
M Spriggs T Charles

In this paper we identify and evaluate arguments for and against offering assisted reproductive technologies (ART), specifically IVF, to HIV discordant couples (male partner HIV positive, female partner HIV negative). The idea of offering ART to HIV discordant couples generates concerns about safety and public health and raises questions such as: what is an acceptable level of risk to offspring...

2000
Donald E. Low Gerald D. Wright

Donald E. Low1 and Gerald D. Wright2 1University of Toronto and 2McMaster University, Toronto, Ontario, Canada and 1,2Canadian Bacterial Diseases Network, Calgary, Alberta, Canada Despite legislation in the United Kingdom (UK) targeted at controlling the use of antimicrobials in food-producing animals, the farming industry commonly uses these drugs therapeutically, prophylactically, and/or for ...

2014
A. Chiverton J. Hannaford I. P. Holman R. Corstanje C. Prudhomme T. M. Hess J. P. Bloomfield

There have been many published studies aiming to identify temporal changes in river flow time series, most of which use monotonic trend tests such as the Mann–Kendall test. Although robust to both the distribution of the data and incomplete records, these tests have important limitations and provide no information as to whether a change in variability mirrors a change in magnitude. This study d...

Journal: :medical journal of islamic republic of iran 0
mohammadreza mobinizadeh department of health services management, science and research branch, islamic azad university, tehran, iran. pouran raeissi department of health services management, school of management and medical information science, iran university of medical sciences, tehran, iran. amir ashkan nasiripour department of health services management, science and research branch, islamic azad university, tehran, iran. alireza olyaeemanesh national institute for health research, tehran university of medical sciences, tehran, iran. seyed jamaleddin tabibi department of health services management, science and research branch, islamic azad university, tehran, iran.

background: in the recent years, using health technologies to diagnose and treat diseases has had a considerable and accelerated growth. the proper use of these technologies may considerably help in the diagnosis and treatment of different diseases. on the other hand, unlimited and unrestricted entry of these technologies may result in induced demand by service providers. the aim of this study ...

ژورنال: علوم آب و خاک 2008
زیبایی, منصور , جعفری ثانی , مریم ,

While technical efficiencies of firms that are estimated with respect to a given frontier are comparable, this is not normally valid the case among firms that operate under different technologies. Such problem arises when comparisons of firms from different regions of country are involved. This study uses the concept of the metafrontier function to investigate regional differences in milk produ...

Ali Yoonessi, Mohammad Taghi Joghataei, Reza Kalantarinezhad,

Copper smelting and refinery factories are the final stages of a pyrometallurgical processing chain, and they cause many environmental challenges around the world. One of the most common environmental problems of these factories is toxic emissions. These toxic gases have harmful effects on the vegetation, animal species, soils, and water resources around the factories. Phytoremediation can play...

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