نتایج جستجو برای: 37 phosphoric acid

تعداد نتایج: 867063  

Journal: :Journal of Biological Chemistry 1934

Journal: :international journal of nanoscience and nanotechnology 2010
m. almasi kashi a. ramazani

highly self-ordered alumina nanopore arrays were fabricated using hard anodization technique in different mixtures of oxalic/phosphoric acid. the phosphoric acid concentration was varied from 0.05 to 0.3 m while the oxalic acid concentration was changed between 0.3 and 0.4 m. the self ordered nanoporous arrays were obtained in anodization voltage changing from 130 to 200 v. the interpore distan...

2014
P. Selvarajan

Phosphoric acid added L-alanine (PLA) single crystals were grown successfully by slow evaporation technique at room temperature by taking 2:1 molar ratio of L-alanine and phosphoric acid. Solubility and nucleation kinetic measurements were carried out for the PLA sample. Critical nucleation parameters have been calculated. Structural analysis reveals that PLA crystal crystallizes in orthorhombi...

ژورنال: :علوم محیطی 0
مینا رضائی جهاد دانشگاهی واحد صنعتی امیرکبیر، گروه معدن و محیط زیست، تهران، ایران سیده فرخ حسینی شکرابی جهاد دانشگاهی واحد صنعتی امیرکبیر، گروه تکنولوژی نساجی، تهران، ایران مهدی ورسه ای دانشگاه آزاد اسلامی، واحد علوم و تحقیقات، گروه مهندسی نساجی، تهران، ایران. عبداله سمیعی بیرق جهاد دانشگاهی واحد صنعتی امیرکبیر، گروه معدن محیط زیست، تهران، ایران

فاضلاب های رنگی صنایع نساجی به ویژه ترکیبات آزو معمولاً حاوی مواد سمی و پایدار در محیط زیست هستند. بنابراین بررسی کارایی روش های متعدد در حذف آن ها ضروری است. ترکیب رنگی acid red 37 از نظر ساختار در گروه رنگ های منو آزو قرار دارد که در حال حاضر در صنایع نساجی کاربرد وسیعی یافته است. هدف از این تحقیق بهینه سازی عوامل مؤثر و مقایسه روش های الکتروفنتون و الکتروکواگولاسیون در حذف acid red 37 است. در...

2013
Alex W. Gregory Pavol Jakubec Paul Turner Darren J. Dixon

A highly enantioselective hydroamination/N-sulfonyliminium cyclization cascade is reported using a combination of gold(I) and chiral phosphoric acid catalysts. An initial 5-exo-dig hydroamination and a subsequent phosphoric acid catalyzed cyclization process provide access to complex sulfonamide scaffolds in excellent yield and high enantiocontrol. The method can be extended to lactam derivativ...

2016
Rossella Yivlialin Luigi Brambilla Gianlorenzo Bussetti Matteo Tommasini Andrea Li Bassi Carlo Spartaco Casari Matteo Passoni Franco Ciccacci Lamberto Duò Chiara Castiglioni

Phosphoric acid is an inorganic acid used for producing graphene sheets by delaminating graphite in (electro-)chemical baths. The observed phenomenology during the electrochemical treatment in phosphoric acid solution is partially different from other acidic solutions, such as sulfuric and perchloric acid solutions, where the graphite surface mainly forms blisters. In fact, the graphite surface...

2008
Athanasios I. Papadopoulos Panos Seferlis

In this work we address the systematic and environmentally efficient design of phosphoric acid production processes through a generic modelling and optimization framework. The employed framework aims to facilitate the design of phosphoric acid production schemes that improve the performance of existing industrial processes while accounting for a number of operating, economic and environmental d...

Journal: :Molecules 2009
Junhua Zhang Jingqiang Zhang Lu Lin Tianming Chen Jun Zhang Shijie Liu Zhenjiang Li Pingkai Ouyang

In this study, we aimed to dissolve microcrystalline cellulose (MCC) with phosphoric acid to obtain high-quality fermentable saccharides. MCC was directly dissolved in phosphoric acid (the concentration was 83%) for 10 hours at temperatures of 30, 50, and 70 degrees C. The structural changes of MCC were determined in detail with X-ray powder diffraction, solid-state cross-polarization magic ang...

Journal: :Operative dentistry 2014
T A Imbery T Gray F DeLatour C Boxx A M Best P C Moon

OBJECTIVE Repairing composite restorations may be a more conservative treatment than replacing the entire restoration. The objective of this in vitro study was to determine the best repair method by measuring flexural, diametral tensile, and shear bond strength of repaired composites in which the surfaces were treated with chemical primers (Add & Bond or Silane Bond Enhancer), a bonding agent (...

2016
A. R. Hall

Strychniaj gr. i. Acid: phosphoric dil: ... 5j. Sp:vinirect: ... ... 5jjj. Aquas ... 3jj, Misce Dose, 60 minims, three times a day. Each dose therefore contains 2^th of a grain of strychnine and three minims of dilute phosphoric acid. I have given it in many cases after a course of quinine, when that remedy seemed to have lost its power ; and in some patients the fever has been cut short after ...

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