نتایج جستجو برای: temperatures

تعداد نتایج: 112005  

Journal: :نامه انجمن حشره شناسی ایران 0
f. faraji y. fathipour s. jafari

the foraging behavior of a natural enemy is greatly affected by temperature. the influence ofdifferent constant temperatures on the functional response and prey consumption of the mated female ofneoseiulus barkeri hughes on nymphal stages of tetranychus urticae koch was evaluated. four ambienttemperatures (20, 25, 30 and 35 â± 1â°c) and six prey densities (2, 4, 8, 16, 32 and 64 individuals) we...

Journal: :international journal of nanoscience and nanotechnology 2013
s. l. sharifi h. r. shakur a. mirzaei m. h. hosseini

in this scientific research work we report a novel method to synthesis co3o4 nanoparticles via calcinations of cobalt hydroxide which can be conveniently prepared by the co(no3 )2.6h2o with different reactants. in order to study the effect of calcination temperature on structure and morphology of the nanoparticles, the calcinations take place at various temperatures (at 300°c, 500°c and 700°c)....

Journal: :journal of crop protection 2013
nayereh hamedi saeid moharramipour

hippodamia variegata is an efficient and most abundant predatory coccinellids in many countries. understanding the ability of long-term low temperature survival in beneficial insects can be used to make better predictions about subsequent abundance and hence the biological control potential in the next spring and summer. so in this study, effects of long-term temperatures were investigated on m...

Journal: :Monthly Weather Review 1920

Journal: :Journal of Approximation Theory 1992

Journal: :Danmarks Geologiske Undersøgelse Serie B 1982

Journal: :iranian journal of veterinary research 2010
m. moazeni m. ansari-lari m. masoodfar s. hosseinzadeh a. mootabi alavi

fasciolosis is a cosmopolitan parasitic disease with considerable economic and public health importance. fasciola hepaticais the major cause of fasciolosis in man and domestic animals. although remarkable research works have been done around the optimum temperature and time required for miracidial development, little is known aboutthe exact susceptibility of fasciola hepaticaeggs to high temper...

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