搜索结果: 16-30 共查到“农学 exposure”相关记录89条 . 查询时间(0.119 秒)
Exposure of pig fatteners and dairy cows to polycyclic aromatic hydrocarbons
polycyclic aromatic hydrocarbons air feed drinking water dust soil exposure
2015/1/26
Exposure of pig fatteners and dairy cows to polycyclic aromatic hydrocarbons (PAHs) was investigated by analyses of selected indoor and outdoor samples. PAH concentrations (16 U.S. EPA priority PAHs) ...
Exposure to hypoxia injures tracheal epithelium (ultrastructural study)
airway epithelium goblet cells ciliated cells ultrastructure rabbit
2015/1/26
The ultrastructure of the tracheal epithelium in rabbits exposed for 96 hours to normobaric hypoxia was studied. In rabbits placed for 96 hours in environment with increased temperature and humidity, ...
Effects of light exposure in freezing temperatures on winter damage to foliage of Norway spruce container seedlings in mid and late winter:Pilot experiments in an open field
cell damage frost irradiance needle colour Picea abies
2015/5/6
Norway spruce (Picea abies (L.) Karst.) is widely planted for reforestation in the boreal zone. It is sensitive to frost and high irradiance during the growing season, and also to winter damage, which...
Nitrogen Dioxide in the Urban Forest: Exposure and Uptake
urban forest street trees photochemical oxidant cycle pollution
2014/11/17
Nitrogen dioxide (NO2) levels were measured inside and adjacent to canopies of urban trees in Springfield, MA, over two growing seasons. Nitrogen dioxide levels were consistently and significantly hig...
ASSESSMENT OF ANNUAL EXPOSURE OF PRIVATE FARMERS TO WHOLE BODY MECHANICAL VIBRATION ON SELECTED FAMILY FARMS OF PLANT PRODUCTION PROFILE
whole body vibration annual exposure vibration dose vibration acceleration
2010/12/22
The objective of the study was evaluation of an annual exposure of private farmers to whole body mechanical vibration on selected family farms of plant production profile. The study covered 15 family ...
Endoto xins and β-glucans as markers of microbiological contamination – characteristics, detection, and environmental exposure
endotoxins β-glucans structure biological activity detection
2010/12/22
Endotoxins and β-glucans are one of the major markers of microbiological contamination. As components of biological aerosols, they are ubiquitous in many environments.Numerous studies performed during...
Potential risk of exposure to selected xenobiotic residues and
classification of xenobiotics toxicity of xenobiotics residues of selected xenobiotics in the food chain
2010/12/22
Consumers are exposed to a diversity of chemicals in all areas of life. Air,water, soil and food are all unavoidable components of the human environment. Each of those elements influences the quality ...
Acute Cold Exposure Triggers Dynamic Metabolic Alteration in Certain Peripheral Tissues of Fresh Water Fishes (Channa punctata)
Peripheral tissues low temperature survival process taki fish and metabolic regulation
2010/11/16
To characterize the sensitivity of environmental low temperature on peripheral tissues of Channa punctatus, species of fishes which are energetic and survive in the critical environment, were exposed ...
EFFECTS OF STRESS PRETREATMENT ON THE DYNAMICS OF BLOOD CHOLINESTERASE ACTIVITY AFTER EXPOSURE TO AN ORGANOPHOSPHORUS PESTICIDE IN THE RAT
cholinesterase inhibitor cholinesterase corticosterone
2010/12/22
A single i.p administration of 1.0 mg/kg of chlorphenvinphos (CVP), an organophosphorus
pesticide, results in an acute stress response, evidenced by a marked (6–7 fold) rise in plasma corticosterone ...
Comparison of Live Skit and Video Delivery Styles Using Presentations With and Without Fluorescent Tracer Dyes at Pesticide Applicator Training for Promotion of Self-Protection from Dermal Exposure
pesticide safety education exposure health style
2009/10/14
Program delivery has a major impact on pesticide applicators’ reception to learning. This study evaluated the impact of different training delivery styles, with and without the demonstration of fluore...
Prepubertal Exposure to the Live Attenuated Avian Infectious Bronchitis Virus Induces Epididymal Stones in the Rooster after Puberty
avian infectious bronchitis virus rooster epididymis calcium stones vaccination
2009/7/30
Roosters immunized prepubertally with the avian infectious bronchitis virus (AIBV) have a high incidence of epididymal calcium stones, reduced daily sperm production and lower serum testosterone as ad...
Effects of Cultivar,Extent of Cumulative Chilling Exposure,Age of Rootstock and Sex on Growth of Spear in Asparagus Forcing Culture
Asparagus Cultivar rootstock
2009/7/14
A study was carried out to evaluate the effect of cultivar, extent of cumulative chilling exposure, age of rootstock and sex on growth of the spear in asparagus (Asparagus officinalis L.) forcing cult...
Relationship between Sunlight Exposure of Fruit and Fruit Temperature,Sorbitol and Early Watercore Occurrence in ‘Orin’ Apples
Fruit Temperature Early Watercore Occurrence Apples
2009/7/13
The experiments were conducted to determine the influence of fruit exposure to sun on fruit temperature, sorbitol content, and early watercore development in ‘Orin’ apples, using a simple measuring sy...
Effects of Chilling Exposure and Chemicals on Breaking Bud Dormancy in Seven Tetraploid Grape Cultivars
CaCN2 diallyl disulfide grapevine H2CN2
2009/7/7
Seven potted dormant tetraploid grapevine cultivars grown under forced conditions were treated immediately after pruning with the supernatants of a 20% suspension of CaCN2, 2% H2CN2 and 5% diallyl dis...
Clarifying Behavior of Prallethrin Evaporated from an Electric Vaporizer on the Floor and Estimating Associated Dermal Exposure
dermal exposure floor residue transferable residue transfer coefficient prallethrin
2009/3/7
The behavior of prallethrin evaporated from an electric vaporizer was investigated through three experiments to determine: 1) distribution of residue levels on the floor, 2) floor levels during prol...