نتایج جستجو برای: crystal purification

تعداد نتایج: 214645  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شیراز - دانشکده علوم 1390

any change in the refractive index of a laser active medium can lead to serious degradation of beam quality, laser beam modes, laser performance and variation in the intensity distribution. alteration in the refractive index of laser active medium is especially notable in high power lasers. it is clear that in the laser beam production, the pumping agent induces a great amount of heat which...

Journal: :BMC Public Health 2002
Vessoni Thereza Christina Penna Silva Alzira Maria Martins Priscila Gava Mazzola

BACKGROUND A typical purification system that provides purified water which meets ionic and organic chemical standards, must be protected from microbial proliferation to minimize cross-contamination for use in cleaning and preparations in pharmaceutical industries and in health environments. METHODOLOGY Samples of water were taken directly from the public distribution water tank at twelve dif...

Journal: :progress in biological sciences 2015
maryam parhamfar arastoo badoei-dalfard mouj khaleghi mehdi hassanshahian

microbial phytases were applied mainly to animal and human foodstuffs in order to improvemineral bioavailability and food processing. in addition, phytases have potentialbiotechnological application in various other fields, such as environmental protection,aquaculture and agriculture. bacillus sp. dm12, an isolate from a hot spring, produces phytase,which catalyzes the hydrolysis of phytic acid...

Journal: :Crystal Growth & Design 2021

Cocrystallization has been promoted as an attractive early development tool it can change the physicochemical properties of a target compound and possibly enable purification single enantiomers from racemic compounds. In general, identification adequate cocrystallization candidates (or coformers) is troublesome hampers exploration solid-state landscape. For this reason, several computational to...

2015
Arnold Burger

Final Report: Development of Optical Crystals for High Power and Tunable Visible and Infrared Light Generation Report Title Lithium based chalcogenides 6LiInSe2 semiconductor has recently get much attention due to its possible application in neutron detection. It has a high resistivity and wide band gap 2.8 eV which makes it an attractive candidate for semiconductor radiation detector. Due to h...

Journal: :Physical chemistry chemical physics : PCCP 2017
Haidi Wang Xingxing Li Zhao Liu Jinlong Yang

Based on the crystal structure prediction, we propose a new allotrope of phosphorene, ψ-phosphorene (ψ-P), with a porous structure, which is both thermally and dynamically stable in comparison with the previously reported allotropes. Due to its unique atom configuration, ψ-P has highly orientation-dependent mechanical properties and excellent flexibility. Calculations using the HSE functional p...

Journal: :Journal of bacteriology 1991
M Kordel B Hofmann D Schomburg R D Schmid

A procedure for the purification of a very hydrophobic lipase from Pseudomonas sp. strain ATCC 21808 was elaborated by avoiding the use of long-chain detergents in view of subsequent crystallization of the enzyme. The purification procedure included chromatography on Q-Sepharose in the presence of n-octyl-beta-D-glucopyranoside, Ca2+ precipitation of fatty acids, and Octyl-Sepharose chromatogra...

Journal: :The journal of physical chemistry. B 2007
Peter Nockemann Ben Thijs Kris Driesen Colin R Janssen Kristof Van Hecke Luc Van Meervelt Simone Kossmann Barbara Kirchner Koen Binnemans

Choline saccharinate and choline acesulfamate are two examples of hydrophilic ionic liquids, which can be prepared from easily available starting materials (choline chloride and a non-nutritive sweetener). The (eco)toxicity of these ionic liquids in aqueous solution is very low in comparison to other types of ionic liquids. A general method for the synthesis and purification of hydrophilic ioni...

Journal: :Methods in cell biology 2013
David Salom Pius S Padayatti Krzysztof Palczewski

Oligomerization is one of several mechanisms that can regulate the activity of G protein-coupled receptors (GPCRs), but little is known about the structure of GPCR oligomers. Crystallography and NMR are the only methods able to reveal the details of receptor-receptor interactions at an atomic level, and several GPCR homodimers already have been described from crystal structures. Two clusters of...

Journal: :Biotechnology progress 2005
Dong Soo Hwang Youngsoo Gim Hyung Joon Cha

Mussel adhesive proteins, including the 20-plus variants of foot protein type 3 (fp-3), have been suggested as potential environmentally friendly adhesives for use in aqueous conditions and in medicine. Here we report the novel production of a recombinant Mytilus galloprovincialis foot protein type 3 variant A (Mgfp-3A) fused with a hexahistidine affinity ligand in Escherichia coli and its appr...

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