نتایج جستجو برای: molybdate sulfuric acid

تعداد نتایج: 749084  

Journal: :Bulletin of the Chemical Society of Japan 1983

Journal: :Journal of the American Chemical Society 1913

Journal: :Chimica techno acta 2021

An urgent task is the development of new resource-saving technologies for deep processing wastes from hydrometallurgical industry purpose their reuse. Membrane make it possible to create closed technological cycles with reuse recovered components in production, which allows solving many environmental problems. At Abinsk Electric Steel Works Ltd. (Russia), during production copper-coated steel w...

Journal: :پژوهش های کاربردی زراعی (زراعت سابق) 0
نسیم چنگایی دانشجوی کارشناسی ارشد دانشکده کشاورزی دانشگاه لرستان خسرو عزیزی دانشیار و عضو هیأت علمی دانشکده کشاورزی دانشگاه لرستان مجید امینی دهقی عضو هیأت علمی دانشگاه شاهد محمد یعقوبی خانقاهی دانشجوی کارشناسی ارشد دانشکده کشاورزی دانشگاه لرستان راحله رهام دانشجوی کارشناسی ارشد دانشکده کشاورزی دانشگاه لرستان

an experiment was conducted to study the effect of sulfuric acid, temperature scales and the source of seed on to break hardness alfalfa seed (medicagoscutellatacvrobinson). this study was carried out as a factorial experiment based on randomized complete design with four replications at the agricultural collage of lorestan university in 2005. acid treatment as the first factor (to rinse with a...

2017
B. R. A. ALENCAR J. M. T. S. ROCHA G. J. M. ROCHA

This paper describes the effect of the addition of Tween-80 in dilute sulfuric acid pretreatment on enzymatic hydrolysis of waste office paper. Lignocellulosic material was pretreated with dilute sulfuric acid (1% V/V) at 50 oC for 3 hours, with or without addition of Tween-80 (2.5 g/L). The pretreatment was able to remove hemicellulose and lignin from waste office paper, but the surfactant did...

Journal: :Clinical chemistry 1973
H W Feng C M Pi R B Wang L C Chen

To determine cholesterolin biologicalfluids,use of the ferric chloride-sulfuric acid reagent introduced by Zlatkis et al. (1) is relatively simple and reliable (2, 3), and the sensitivityof the reagent for cholesterol is four to five times greater than that of the Liebermann-Burchard reagent (2). However, Parekh and Jung (4) reported that hydrogen chloride is evolved during the ferric chloride-...

2013
Zinia Jaman Mohammad R. Karim Tasneem A. Siddiquee Aminul H. Mirza Mohamad A. Ali

Eight new Schiff bases of 5-nitro and 5-bromo-substituted 1,10-phenanthroline-2,9-dicarboxaldehydes with sulfur-containing amines, thiosemicarbazide, S-alkyl/aryl dithiocarbazates and 2-mercaptoaniline have been synthesized and characterized by a variety of spectroscopic methods. The condensation reactions of the dialdehydes with the amines were carried out both in the presence and absence of c...

2016
Bo Zhang Maofa Jiang

Because of the acute toxicity of Cr(VI)-bearing substances, the pollution problem caused by chromite process residue has become a worldwide concern. In the view of relevant studies, the technologies based on the alkali treatment cannot fundamentally resolve the pollution problem, because the oxidation of Cr(III) to Cr(VI) is unavoidable during chromite decomposition. In contrast, the oxidation ...

Journal: :iranian chemical communication 2014
behnam hafezi

in this work, a tracer study on pore initiation in anodic alumina in oxalic acid was performed. effects of some experimental parameters such as applied electrical potential, electrolyte composition and heat pretreatment were evaluated. electrochemical and morphological experiments were performed using potentiostatic anodizing and scanning electron microscopy (sem) techniques, respectively. effe...

Journal: :journal of rangeland science 2014
ali tavili mahsa mirdashtvan rezvan alijani masoud yousefi salman zare

nowadays, in many rangelands, due to over grazing, and problems that some plantshave in germination, the rate of forage production is greatly reduced. so to take advantages ofthe benefits of such plants, it is necessary to identify and remove barriers of germination andestablishment of suitable plants. the present study was designed to investigate differenttreatments of breaking dormancy and st...

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