نتایج جستجو برای: 5 and v
تعداد نتایج: 17074065 فیلتر نتایج به سال:
abstract in first part of this project, the use of a new and biguanid-like catalyst supported on silica as a recyclable catalyst provides a new route for the synthesis of a variety of arylalkylidene rhodanine derivatives through knoevenagle reaction in at present of solvent at room temperature. rhodanine derivatives and especially arylalkylidene rhodanines have proven to be attractive compound...
flow in natural river bends is a complex and turbulent phenomenon which affects the scour and sedimentations and causes an irregular bed topography on the bed. for the reason, the flow hydralics and the parameters which affect the flow to be studied and understand. in this study the effect of bed and wall roughness using the software fluent discussed in a sharp 90-degree flume bend with 40.3cm ...
minimum inhibitory concentrations (mic) of some essential oils and citric acid were determined against two micro-organisms associated with spoilage of orange juice (saccharomyces cervisiae and leuconostoc mesenteroids) and against four unidentified microorganisms isolated from citrus surface and spoiled orange juice. mic for limonene were obtained less than 5% w/v aqueous against saccharomyces ...
three marine bacteria, pseudomonas putida ptcc 1664, bacillus cereus pttc 1665 and pseudomonas pseudoalkaligenes ptcc 1666 isolated from the east anzali wetland sediments of the caspian sea, were resistant to heavy metals of cadmium (cd), nickel (ni) and vanadium (v). pseudomonas pseudoalkaligenes ptcc 1666 was found to be resistant to all 3 metals ni, cd, v. heavy metal uptake was determined ...
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