نتایج جستجو برای: agricultural chemicals

تعداد نتایج: 144207  

Journal: :Birth defects research. Part B, Developmental and reproductive toxicology 2011
Susan L Makris James H Kim Amy Ellis Willem Faber Wafa Harrouk Joseph M Lewis Merle G Paule Jennifer Seed Melissa Tassinari Rochelle Tyl

A review is presented of the use of developmental toxicity testing in the United States and international regulatory assessment of human health risks associated with exposures to pharmaceuticals (human and veterinary), chemicals (agricultural, industrial, and environmental), food additives, cosmetics, and consumer products. Developmental toxicology data are used for prioritization and screening...

2017
Eric VAN WELY

The first standards for chemical protective clothing (CPC) emerged mid to late 1980's and have evolved since as most standards are revisited every 5 yr. Over the past years, we have also seen a strengthening of the chemical and worker protection legislation around the globe (various forms of REACH) but also protection of workers. The most prevalent standards originate under the auspices of the ...

Journal: :The Science of the total environment 2015
Carmen Lorente Jesús Causapé Ronnie N Glud Kasper Hancke Daniel Merchán Selene Muñiz Jonatan Val Enrique Navarro

A small hydrological basin (Lerma, NE Spain), transformed from its natural state (steppe) to rain-fed agriculture and recently to irrigation agriculture, has been monitored across four seasons of an agricultural year. The goal of this study was to assess how and whether agricultural activities impacted the nearby freshwater ecosystems via runoff. Specifically, we assessed the toxicity of three ...

2017
Ying Liu Chenggang Wang Zeng Tang Zhibiao Nan

The rapid growth of farmland rental markets in China raises questions about the association of farmland rental and agricultural productivity. Although this issue has been extensively studied, the majority of studies have focused on yields and technical efficiency, with input use and cost efficiency receiving little attention. This study aimed to determine the statistical association of wheat an...

Journal: :Environmental Health Perspectives 1995
N J Simcox R A Fenske S A Wolz I C Lee D A Kalman

Child of agriculture families are likely to be exposed to agricultural chemicals, even if they are not involved in farm activities. This study was designed to determine whether such children are exposed to higher levels of pesticides than children whose parents are not involved in agriculture and whose homes are not close to farms. Household dust and soil samples were collected in children's pl...

Journal: :Philosophical transactions. Series A, Mathematical, physical, and engineering sciences 2009
S R Smith

Organic chemicals discharged in urban wastewater from industrial and domestic sources, or those entering through atmospheric deposition onto paved areas via surface run-off, are predominantly lipophilic in nature and therefore become concentrated in sewage sludge, with potential implications for the agricultural use of sludge as a soil improver. Biodegradation occurs to varying degrees during w...

2010
John C. Palumbo

The efficacy and field performance of new insecticides for control of insects on vegetables and melons under desert growing conditions has been investigated in small plot trials for the past several years at the Yuma Agricultural Center. Our objective has been to determine how new chemistries will fit into the growers management programs in Arizona. Thus, our research programs have been focused...

2008
Allen Morris Ron Muraro

1. This is EDIS document FE712, a publication of the Food and Resource Economics Department, Florida Cooperative Extension Service, Institute of Food and Agricultural Sciences, University of Florida, Gainesville, FL. Published June 2008. Please visit the EDIS Web site at http://edis.ifas.ufl.edu. 2. Allen Morris, Associate Extension Scientist, and Ron Muraro, Professor, Food and Resource Econom...

Journal: :Bioresource technology 2016
Michele Michelin José António Teixeira

Agricultural feedstocks (brewers' spent grain - BSG, corncob - CC, corn husk - CH, wheat straw - WS and Luffa sponge - LS) were pretreated by liquid hot water (LHW) in order to increase cellulose recovery and enzymatic saccharification. LHW-pretreatment resulted in hemicellulose solubilization, and solids enriched in cellulose. Chemical analysis showed different susceptibilities of the feedstoc...

Journal: :Ambio 2012
Bo Sun Linxiu Zhang Linzhang Yang Fusuo Zhang David Norse Zhaoliang Zhu

Non-point source (NPS) pollution has been increasingly serious in China since the 1990s. The increases of agricultural NPS pollution in China is evaluated for the period 2000-2008 by surveying the literature on water and soil pollution from fertilizers and pesticides, and assessing the surplus nitrogen balance within provinces. The main causes for NPS pollution were excessive inputs of nitrogen...

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