نتایج جستجو برای: 150 and 250 ppm
تعداد نتایج: 16850380 فیلتر نتایج به سال:
Magnesium zirconate titanate (MZT) thin films, used as a sensing layer on Al interdigitated electrodes prepared using sol–gel spin-coating method, are demonstrated in this study. The p-type MZT/Al/SiO2/Si structure for NO2 is also discussed. results indicated that the best sensitivity of gas sensor occurred when it was operating at temperature ranging from 100 to 150 °C. detection limit low 250...
The current study was carried out to evaluate the effect of some growth retardants such as alar, ethrel, cycocel and paclobutrazol with different concentrations (50, 100, 150 and 200 ppm.) on maize dwarf mosaic virus (MDMV) in vitro and in vivo. In vitro experiment, growth retardants reduced the occurrence of mosaic symptoms on maize plants. These percentages were reduced to 40%. Paclobutrazol ...
فولاد ساده کربنی در صنایع نفت و پتروشیمی بسیار استفاده می شود و خوردگی آن در محیط های اسیدی از جمله مشکلات و معضلات این صنایع است. استفاده از بازدارنده های خوردگی یکی از راه های مهم برای جلوگیری از خوردگی تجهیزات صنعتی محسوب می شود. مشتقات بنزامیدازول یکی از ترکیبات آلی هتروسیکلیک هستند که به عنوان بازدارنده های خوردگی فولاد ساده کربنی در محیط های اسیدی به خوبی عمل می کنند. در این تحقیق اثرات ب...
فولاد ساده کربنی در صنایع نفت و پتروشیمی بسیار استفاده میشود و خوردگی آن در محیطهای اسیدی از جمله مشکلات و معضلات این صنایع است. استفاده از بازدارندههای خوردگی یکی از راههای مهم برای جلوگیری از خوردگی تجهیزات صنعتی محسوب میشود. مشتقات بنزامیدازول یکی از ترکیبات آلی هتروسیکلیک هستند که بهعنوان بازدارندههای خوردگی فولاد ساده کربنی در محیطهای اسیدی به خوبی عمل میکنند. در این تحقیق اثرات ب...
This experiment was conducted to evaluate the effect of different levels of Satureja Hortensis essence on performance, carcass characteristics and immune response of broiler chickens . 220 one day old Ross 308 chicks were used in completely randomized design with 20 experimental units with 4 treatments, 5 replicates and 11 chicks in each replicate for 42 days. The dietary treatments consisted...
Abstract Cyprinus carpio L. is one of the most important freshwater fish and has been intensively cultivated. However, microbial infection become restricting component that can cause economic loss in carp production use commercial antibiotics for therapy produces adverse side effects. This study was conducted to evaluate potential Ocimum sanctum crude extract on haematology against A. hydrophil...
Nonlethal management alternatives are needed to reduce avian depredation of agricultural crops. Caffeine has promise as an effective, economical, and environmentally safe avian repellent, yet formulation improvements are needed for field applications. We included sodium benzoate in subsequent formulations to enhance the solubility of caffeine. Red-winged blackbirds (Agelaius phoeniceus) discrim...
The milk supply is considered a primary route for a bioterrorism attack with Bacillus anthracis spores because typical high-temperature short-time (HTST) pasteurization conditions cannot inactivate spores. In the event of intentional contamination, an effective method to inactivate the spores in milk under HTST processing conditions is needed. This study was undertaken to identify combinations ...
The chemopreventive action of 40 and 80% maximum tolerated dose (MTD) levels of piroxicam, D,L-alpha-difluoromethylornithine (DMFO), 16 alpha-fluoro-5-androsten-17-one (DHEA analogue 8354), and ellagic acid (EA) administered in diet individually and in combination before and during initiation and postinitiation phases of azoxymethane-induced neoplasia of the intestine was studied in male F344 r...
The preservation of fresh produce served as salads through soaking with solutions containing naturally occurring phenolic ingredients is of merit. For a primary assay, thymol and resveratrol at 0-500 ppm were prepared and used to inhibit growth and survival of Escherichia coli and Staphylococcus aureus. Thymol and resveratrol exhibited potent inhibitory activities against the growth of both bac...
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