نتایج جستجو برای: surface resistance
تعداد نتایج: 991919 فیلتر نتایج به سال:
Introduction: German cockroach (Blattella germanica, Insecta: Blattodea: Blattellidae) is considered one of the most common household pests which can transfer pathogenic agents and also cause allergic reactions. Frequent and uncontrolled spraying caused resistance in German cockroach to insecticides. In this study we aimed, to determine the malathion and chlorpyrifos resistance mechanism ...
. . Superconducting rf surface resistance measurements were made on oxidized Nb cavities that been warmed for a few minutes to temperatures between 250 and 300°C. Warmed oxide layers were further studied using x-ray photoelectron spectroscopy, Auger electron spectroscopy and secondary electron emission yield measurements. Warming usually reduced the temperature-dependent (BCS) part of the surfa...
Many factors influence a vehicle’s rate of fuel consumption. Among them are engine efficiency, speed, aerodynamics, and rolling resistance. When it comes to the influence that pavement characteristics have on fuel consumption, one of the major contributors is surface roughness which impacts rolling resistance; more energy is required to propel a vehicle over a rough surface than over a smooth s...
Background & Objectives: Blatella germanica as a significant urban pest, can transmit various diseases and cause allergy. In spite of frequent pyrethroid spraying, contamination to German cockroach continues in Shahid Beheshti hospital and so far no survey has been carried out concerning the cause of persistent contamination to this pest. This study was carried out to assess the susceptibility ...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید