Evaluation of the effects of chemical mutagens on man: the long road ahead.
نویسنده
چکیده
By analogy with the problem of evaluating the genetic risks of radiation, it appears that it will be extremely difficult to assess the mutagenicity for man of the wide range of chemicals to which human populations are currently exposed. Nevertheless, the potential significance of this problem calls for a major effort at such an evaluation.
منابع مشابه
Evaluation of the Effects of Maintenance and Rehabilitation Projects on Road User Costs via HDM-4 Software
Rapid growth in a number of vehicles on roadways accelerates pavement deterioration trends. Pavement inefficiency in carrying the applied load from passing vehicles results in spending significant costs on continues Maintenance and Rehabilitation (M&R) treatments. Lane closure owing to the implementation of M&R operations incurs enormous costs on road users. The research aimed to calculate, and...
متن کاملO6: How to Encourage Building a New Road Traffic Culture for Children in Developing Countries
Road traffic accidents (RTA) are one of the most important causes of death and disability all over the world. In developing countries the problem is more complicated. Based on the estimation by UNICEF, rate of RTA in Iran is 20 times more than world’s average. In Iran among all unintentional fatal injuries inflicted on children under five, traffic related fatalities are the leading cause ...
متن کاملEffects of Ti/Mg molar ratio on bi-supported SiO2/MgCl2 (ethoxide type)/TiCl4 catalysts in ethylene homopolymerization and ethylene/1-hexene copolymerization
SiO2/MgCl2 (ethoxide type)/TiCl4 Ziegler-Natta catalysts for use in ethylene polymerization and ethylene/1-hexene copolymerization have been prepared using silica with a supported layer of magnesium ethoxide (Mg(OEt)2) as a catalyst precursor, followed by treating with TiCl4 at different Ti/Mg molar ratios, which showed significant effects on the active centers and pore structures of the cataly...
متن کاملEvaluation Effects of Chemical, Organic and Biologic Fertilizers on Chamomile (Matricaria chamomile L.) Yield
Although herbs have been important and attractive since long time ago, they have gained such popularity due to the adverse side effects of chemical medicines that nowadays their cultivation has become among significant agricultural programs of most developed countries. In order to study the effects of chemical, organic, and biological fertilizers on Medicinal Chamomile yield and its components,...
متن کاملPerformance Evaluation of a Trunk-A Road in North Central Nigeria
Pavement maintenance and rehabilitation have been neglected in Nigeria for a very long time and has resulted to maintenance backlog. Design agencies in Nigeria still use California Bearing Ratio (CBR), even though the method is outdated. An introduction of Dynamic Cone Penetration Test (DCPT) was pertinent, even though the method is relatively old in some developed countries, it has not gain mu...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
- Proceedings of the National Academy of Sciences of the United States of America
دوره 67 2 شماره
صفحات -
تاریخ انتشار 1970