نتایج جستجو برای: agricultural workers

تعداد نتایج: 213002  

2005
Peter McCullagh

The aim of this paper to study the nature of spatial correlation of yields of agricultural crops. The focus is primarily on natural or non-anthropogenic spatial variation, patterns that cannot be explained by topography, by variety or treatment effects, or by agricultural practices. Conformal invariance implies stationarity and isotropy, and also determines the rate of decay of spatial correlat...

2006
DAVID CLIFFORD

The aim of this paper is to study the nature of spatial correlation of yields of agricultural crops. The focus is primarily on natural or non-anthropogenic spatial variation, patterns that cannot be explained by topography, by variety or treatment effects, or by agricultural practices. Conformal invariance implies stationarity and isotropy, and also determines the rate of decay of spatial corre...

2016
James C. Beasley

Wildlife damage to crops is a widespread concern among agricultural producers and wildlife professionals. In the United States, raccoon (Procyon lotor) damage to field corn (Zea maize) has become a serious concern, as raccoon depredation to corn has increased significantly in recent years. However, little information is available to suggest the underlying factors responsible for recent increase...

Journal: :Arhiv za higijenu rada i toksikologiju 2012
Jordan Minov Jovanka Karadžinska-Bislimovska Kristin Vasilevska Zlatka Nelovska Snežana Risteska-Kuc Sašo Stoleski Dragan Mijakoski

To assess the efficacy of nationwide anti-smoking campaign, we compared the findings of a study on worker smoking performed in 2005 with our latest cross-sectional study completed in 2010. It included 753 randomly selected workers, of whom 126 office, 108 construction, 93 agricultural, 97 petroleum refinery, 114 textile, 117 food processing workers, and 98 cleaners. Information was collected wi...

Journal: :Perspectives in biology and medicine 1986
H A Schneider

In 1883 a Department of Agricultural Chemistry was founded at the University of Wisconsin in the city of Madison. One hundred years later seems a fitting time to look back, to gain some perspective on the fortunes of that academic undertaking. It is in looking back that I discern an intriguing wave in the tide of time. Although in the first 30 years there was much of interest, I shall leave tha...

2013
H. M. Patel

The treated effluent was collected from JK paper mill from its outlet. The physico-chemical characteristics of paper mill treated effluent were measured. The most of the quality parameters were found to be below the permissible limits prescribed by Indian irrigation water standard, except electrical conductivity, total dissolved solids and alkalinity. This study was conducted to investigate the...

2015
Olivia M. Bernauer Hannah R. Gaines-Day Shawn A. Steffan Brian T. Forschler

Bees provide vital pollination services to the majority of flowering plants in both natural and agricultural systems. Unfortunately, both native and managed bee populations are experiencing declines, threatening the persistence of these plants and crops. Agricultural chemicals are one possible culprit contributing to bee declines. Even fungicides, generally considered safe for bees, have been s...

2013
Gary W. Witmer Rachael S. Moulton

The deer mouse is the most widely distributed and abundant small mammal in North America. They use a wide array of habitats, are very adaptable, and have a high reproductive potential. They play a number of roles in ecosystems, but can cause damage to orchards, forests, agriculture crops, and rangelands primarily through seed and newly-emerged seedling consumption. They also cause damage simila...

2003
Wei Gao Youfei Zheng James R. Slusser Gordon M. Heisler

The stratospheric ozone depletion and enhanced solar ultraviolet-B (UV-B) irradiance may have adverse impacts on the productivity of agricultural crops. The effect of UV-B enhancements on agricultural crops includes reduction in yield, alteration in species competition, decrease in photosynthetic activity, susceptibility to disease, and changes in structure and pigmentation. Many studies have e...

Journal: :Occupational and environmental medicine 2001
S Horsburgh A M Feyer J D Langley

OBJECTIVES To describe work related fatal injuries to agricultural workers in New Zealand to identify priority areas for further research and injury control measures. METHODS Injury deaths in New Zealanders aged 15-84 inclusive for the period 1985-94 were identified and the coroner's files for these obtained. These files were then reviewed to determine whether the death arose as a result of w...

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