نتایج جستجو برای: chemical resistance

تعداد نتایج: 739220  

Journal: :Journal of Integrative Plant Biology 2017

2017
Milton O. Anyanga Benard Yada G. C. Yencho Gorrettie N. Ssemakula Agnes Alajo Dudley I. Farman Robert O. M. Mwanga Philip C. Stevenson

Resistance to sweetpotato weevils (Cylas spp.) has been identified in several sweetpotato (Ipomoea batatas) landraces from East Africa and shown to be conferred by hydroxycinnamic acids that occur on the surface of storage roots. The segregation of resistance in this crop is unknown and could be monitored using these chemical traits as markers for resistance in F1 offspring from breeding progra...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه اصفهان - دانشکده زبانهای خارجی 1390

as the canon is shaped by white male standards rewriting the canonical works of literature is one of the ways through which postcolonial writers subvert the authority of the masters. writing in the language of the masters the colonized writers use the very suppressive tool in the hands of the masters i.e. their language to question the validity of their norms. regarded by most critics to be the...

پایان نامه :وزارت علوم، تحقیقات و فناوری - پژوهشگاه مواد و انرژی - پژوهشکده سرامیک 1392

thermal barrier coatings (tbcs) are used to provide thermal insulation to the hot section components of gas turbines in order to enhance the operating temperature and turbine efficiency. hot corrosion and thermal shocks are the main destructive factors in tbcs which comes as a result of oxygen and molten salt diffusion into the coating. in this thesis atmospheric plasma spraying was used to dep...

2002

olyester and vinyl ester resinbased linings are known for their solvent and chemical resistance. The different resins in these linings have broad resistance ranges, with acid resistance being a major strength. Some of the specific resins resist 1 or more chemicals or types of chemicals better than other resins, so systems often are finetuned by the choice of resin for a particular chemical envi...

Journal: :Drug discovery today 2014
Panagiota A Sotiropoulou Michael S Christodoulou Alessandra Silvani Christel Herold-Mende Daniele Passarella

Cancer stem cells (CSCs) are a subpopulation of cancer cells with high clonogenic capacity and ability to reform parental tumors upon transplantation. Resistance to therapy has been shown for several types of CSC and, therefore, they have been proposed as the cause of tumor relapse. Consequently, much effort has been made to design molecules that can target CSCs specifically and sensitize them ...

The enormous demands for metal implant have given rise to a search for cheap material with good bio-tolerability and resistance to corrosion. Although stainless steel has these properties and is widely used for this purpose, its long term application is still a concern. The corrosion resistance of stainless steel depends on the passive layer. Herein, chemical surface treatment, including passiv...

Journal: :jundishapur journal of health sciences 0
mona sharififard department of medical entomology and vector control, school of health, jundishapur university of medical science, ahvaz, ir iran farhad safdari health center of khouzestan province, ahvaz, ir iran farhad safdari health center of khouzestan province, ahvaz, ir iran

the house fly, musca domestica l., is known as one of the most important hygiene problems worldwide. it has shown a high potential to develop resistance to chemical insecticides. this study was undertaken to determine the susceptibility or resistance of the house fly, which were collected from 3 livestock farms near the city of ahvaz, to prevalent pyrethroid insecticides (delthamethrin, lambda-...

2014
Xingang Wang Inkyu Rhee Yao Wang Yunping Xi

This study investigated compressive strength, chloride penetration, and freeze-thaw resistance of multiwalled carbon nanotube (MWNT) concrete. More than 100 cylindrical specimens were used to assess test variables during sensitivity observations, including water-cement ratios (0.75, 0.5, and 0.4) and exposure to chemical agents (including gum arabic, propanol, ethanol, sodium polyacrylate, meth...

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