نتایج جستجو برای: permissible limit
تعداد نتایج: 194655 فیلتر نتایج به سال:
considering the increasing rice consumption in the world and also the excessive application of pesticides to increase production, an experiment was conducted to determine the pesticide residues and their effects on nitrogen, potassium and phosphorus content of hashemi, khazar and gohar (sa13) rice cultivars, in a factorial design at randomized complete block design with three replications. in t...
The dimensional synthesis is done by using Genetic Algorithm to achieve a desired trajectory. Three problems are analyzed having different curvature. The program is authored in MATLAB ® 2010a. The error is seen to be in the permissible prescribed limit. The prototyping of straight line trajectory analysis is also done in ADAMS ® .
A colorimetric detection method using amine-functionalized polymer films doped with a pH indicator has been developed for the rapid, sensitive, and quantitative detection of gaseous formaldehyde at concentrations well below the immediately dangerous to life or health (IDLH) limit. In 1 min, visible color changes are easily observed, even down to the permissible exposure limit (PEL) at 750 ppb. ...
Background & Objective: Histamine poisoning which is induced from seafood is the most common disease around the world. Determining the amount of histamine in canned tuna fish shows not only the healthy quality of fish, but also it is effective in protecting the health and safety of the consumers. Materials & Methods: In this cross-sectional study, 60 samples of histamine content canned tuna...
Introduction: The respiratory system, as one of the most important organs of the human body, is affected by adverse health effects and consequences of particulate matter. this study was performed to purpose determine the occupational exposure of workers to crystalline silica of inhalable dust and determine its health risks. Method: In this analytical cross-sectional study, sampling was perform...
The purpose of this study was to determine the concentrations of toxic metals (Cd, Hg, Cr, Pb, As) in meat at the Kumasi Central Abattoir, Ghana by using a Varian 220 Atom Absorption Spectrophotometer. The levels of toxic metals in meat (cow, pig, sheep, goat, grass cutter, deer) varied in concentration. The concentration of lead was above the tolerance level in all the meat samples with the hi...
The LP Method in Calculating the Maximum Permissible Limit of Sulfur Dioxide Discharged into the Air
background: this study was performed to evaluate the levels of heavy metals in the livers and kidneys of cattle, sheep and goats from a mining region in the west of iran. methods: in this cross-sectional study, 90 samples were collected from the livers and kidneys of cattle (n=30), sheep (n=30) and goats (n=30) from a slaughterhouse in hamedan city, western iran. lead, cadmium, manganese, zinc,...
A field study designed to reveal the physiological workload on garbage collectors (GC) was conducted in Japan. Three drivers who only operated a garbage truck, three loaders who actually collected as a team, three solo collectors, and one clerical worker, totaling 10 male workers participated in this study. The ambient temperature and the relative humidity, activity intensity, and heart rate we...
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