نتایج جستجو برای: obtained suspension was spread ina petri dish then
تعداد نتایج: 4757045 فیلتر نتایج به سال:
background: the objective of the present research was to determine the frequency of toxocara spp. eggs in soil samples of public parks, in the city of tehran, iran. methods: a total of 600 soil samples were taken from 120 parks between aprils to november, 2008. soil samples were collected from 5 distinct sites in the parks. the samples were washed with saline solution and the collected sediment...
By PETRI RÄISÄNEN , HOWARD W. BARKER , MARAT F. KHAIROUTDINOV , JIANGNAN LI and DAVID A. RANDALL Department of Physics and Atmospheric Science, Dalhousie University, Canada Cloud Physics Research Division, Meteorological Service of Canada, Canada Department of Atmospheric Science, Colorado State University, United States Climate Modelling and Analysis Division, Meteorological Service of Canada,...
the risk of disease spread through water, fruits and vegetables contaminated through unclean waters varies from region to another. springs and underground water resources are essentially free of germs or they have tolerable levels of germs; unless they are infected by surface water or human excreta. scientific reports have shown that outbreaks of food-borne illnesses especially foods such as fr...
Sample preparation. 6 g EVA (containing 18 wt.% of VA, Sigma-Aldrich, Canada) was first dissolved in 50 mL toluene at 80 oC under magnetic stirring to form homogeneous solution, which was then cooled to 55 oC and subsequently added with 0.123 g DCP (dicumyl peroxide, Sigma-Aldrich, Canada) and continuously stirred for 10 min. The above solution was first cast into a petri dish to allow evaporat...
Uskali Mäki has been one of the major thinkers in economic methodology during the last decades and devoting a book to his philosophy of economics is a natural and appropriate step. Let me already at this stage admit that I am not really neutral about Mäki's work. On several occasions I have myself applied it to contemporary issues in economics. From my own experience I know that Mäki's ideas ab...
over the past decades a number of approaches have been applied for forecasting mortality. in 1992, a new method for long-run forecast of the level and age pattern of mortality was published by lee and carter. this method was welcomed by many authors so it was extended through a wider class of generalized, parametric and nonlinear model. this model represents one of the most influential recent d...
the following null hypothesis was proposed: h : there is no significant difference between the use of semantically or communicatively translates scientific texts. to test the null hypothesis, a number of procedures were taken first, two passages were selected form soyrcebooks of food and nutrition industry and gardening deciplines. each, in turn, was following by a number of comprehension quest...
The root-knot nematodes Meloidogyne incognita poses a serious threat to horticultural food and plantation crops. One of the effective efficient measures overcome this nematode is using bacteria as biological control agent. This study aimed test effectiveness Bacillus subtilis grown on media with additional micronutrients agent for M. incognita. was carried out by growing in 100 mL nutrient brot...
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