نتایج جستجو برای: chemical purification

تعداد نتایج: 430546  

Journal: :Journal of the American Chemical Society 2008
Omar K Farha Karen L Mulfort Alison M Thorsness Joseph T Hupp

Journal of the American Chemical Society is published by the American Chemical Society. 1155 Sixteenth Street N.W., Washington, DC 20036 Communication Separating Solids: Purification of Metal-Organic Framework Materials Omar K. Farha, Karen L. Mulfort, Alison M. Thorsness, and Joseph T. Hupp J. Am. Chem. Soc., 2008, 130 (27), 8598-8599• DOI: 10.1021/ja803097e • Publication Date (Web): 13 June 2...

2011
JONG HOON HAHN RENATO ZENOBI JEFFREY L. BADA N. ZARE

extreme challenge because of the limited sample amount available combined with possible contamination and chemical modification during sample storage and processing (1, 2). In general, many grams of meteorite material are required and their chemical analysis is laborious, often involving a series of extraction, purification, and identification steps (1, 3). We report here a new method for the d...

Journal: :The Journal of antibiotics 1972
D Kluepfel J Bagli H Baker M P Charest A Kudelski

A new crystalline antifungal compound, myriocin, has been isolated from culture filtrates and mycelium of the thermophilic ascomycete Myriococcum albomyces. Myriocin is strongly active in vitro against yeasts and dermatophytes. This paper deals with the production, isolation, and purification, as well as the physical, chemical and biological properties of myriocin and one of its derivatives, an...

2009
Cheng Qian Hang Qi Jie Liu

The Journal of Physical Chemistry C is published by the American Chemical Society. 1155 Sixteenth Street N.W., Washington, DC 20036 Article Effect of Tungsten on the Purification of Few-Walled Carbon Nanotubes Synthesized by Thermal Chemical Vapor Deposition Methods Cheng Qian, Hang Qi, and Jie Liu J. Phys. Chem. C, 2007, 111 (1), 131-133 • DOI: 10.1021/jp064139t Downloaded from http://pubs.acs...

Journal: :Clean technologies 2021

This study reviews the available and most commonly used methods of gas deodorization. Comparing various odor removal, undoubtedly biological pollution degradation have an advantage over others—chemical physical. is manifestedmainly in ecological economic terms. The possibility using to remove H2S NH3, as common emitted by municipal sector companies, was analyzed terms their removal efficiency. ...

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2014
lin xue-song chen dian-qiang zhong bo yang jian-lin

an efficient method for purification of yard-glass shaped boron nitride nanotubes (yg-bnnts) fabricated via a chemical vapour reaction (cvr) route has been developed. impurities including carbon, boron nitride (bn), and fe species in the pristine yg-bnnt sample are removed by a combined physical and chemical procedure which involves ultrasonication, high temperature oxidation, hot-water washing...

2016
S. F. Loibl Z. Harpaz R. Zitterbart O. Seitz

The total chemical synthesis of proteins is a tedious and time-consuming endeavour. The typical steps involve solid phase synthesis of peptide thioesters and cysteinyl peptides, native chemical ligation (NCL) in solution, desulfurization or removal of ligation auxiliaries in the case of extended NCL as well asmany intermediary and final HPLC purification steps. With an aim to facilitate and imp...

Journal: :Chemical science 2016
S F Loibl Z Harpaz R Zitterbart O Seitz

The total chemical synthesis of proteins is a tedious and time-consuming endeavour. The typical steps involve solid phase synthesis of peptide thioesters and cysteinyl peptides, native chemical ligation (NCL) in solution, desulfurization or removal of ligation auxiliaries in the case of extended NCL as well as many intermediary and final HPLC purification steps. With an aim to facilitate and im...

Somasundaran Thirugnanasambandan, Vijayabaskar Pandian,

Heparin was isolated from whole clam tissue Marcia opima . Purification of multimilligram quantities of heparin from this tissue sample permitted a thorough examination of its anticoagulant activity characterization, which was partially purified by fractionation by anion exchange chromatography using DEAE cellulose column. The isolated crude and partially purified fractionated sample showed me...

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