نتایج جستجو برای: anionic polyacrylamide

تعداد نتایج: 30145  

Journal: :Journal of Natural Gas Science and Engineering 2021

Hydraulic fracturing is widely used to create cracks and increase the size connectivity of existing fractures, leading higher permeability shale rocks production unconventional hydrocarbon sources. The main chemicals in hydraulic fluids can initiate fractures reservoirs by acid induced carbonate dissolution, minimise energy loss during pumping process friction reducer enhanced fluid viscosity. ...

Journal: :Chemistry & biology 2004
David Jung Annett Rozek Mark Okon Robert E W Hancock

Daptomycin is a cyclic anionic lipopeptide antibiotic recently approved for the treatment of complicated skin infections (Cubicin). Its function is dependent on calcium (as Ca2+). Circular dichroism spectroscopy indicated that daptomycin experienced two structural transitions: a transition upon interaction of daptomycin with Ca2+, and a further transition upon interaction with Ca2+ and the bact...

2015
Xiaoxiao Li Xuejing Zheng Keyong Tang

Dyes wastewater produced during leather processing caused serious environmental pollution. Anionic dyes are always vital crisis in waste treatment. Removal of anionic dyes from tannery wastewater before their discharge into the environment is important for health and environment safety. The use of low-priced and biodegradable adsorbents could be a good method to minimize the environmental impac...

Journal: :Langmuir : the ACS journal of surfaces and colloids 2008
Yiyang Lin Xue Han Xinhao Cheng Jianbin Huang Dehai Liang Cailan Yu

With the aid of pH variation, direct transformation of a "1-1" cationic-anionic surfactant pair to a "1-2" cationic-anionic surfactant pair was attained in the system of cetyltrimethylammonium bromide and n-decylphosphoric acid. Owing to the transformation of a "1-1" pair to a "1-2" pair, diverse microstructures and peculiar phase behavior in this cationic-anionic surfactant mixture was obtaine...

Journal: :Journal of oleo science 2015
Asami Aoki Hikaru Akaboshi Taku Ogura Tatsuo Aikawa Takeshi Kondo Norio Tobori Makoto Yuasa

We prepared pH-sensitive anionic liposomes composed solely of anionic bilayer membrane components that were designed to promote efficient release of entrapped agents in response to acidic pH. The pH-sensitive anionic liposomes showed high dispersion stability at neutral pH, but the fluidity of the bilayer membrane was enhanced in an acidic environment. These liposomes were rather simple and wer...

Journal: :The Biochemical journal 1999
T A Brighton Y P Dai P J Hogg C N Chesterman

Considerable interest is currently focused on the interactions of beta-2 glycoprotein I (beta2GPI) and anti-phospholipid antibodies with anionic phospholipids in an attempt to understand the association between these antibodies and clinical diseases such as thrombosis. The interactions of beta2GPI and anionic phospholipids have only been characterized partially, and the physiological role of th...

Journal: :The Journal of biological chemistry 1991
A Abo E Pick

Activation of the superoxide (O2-)-generating NADPH oxidase of phagocytes in a cell-free system by anionic amphiphiles requires the participation of both membrane and cytosolic components. We reported that ammonium sulfate fractionation (Pick, E., Kroizman, T., and Abo, A. (1989) J. Immunol. 143, 4180-4187) and affinity chromatography on 2',5'-ADP-agarose (Shaag, D., and Pick, E. (1990) Biochim...

Journal: :The Journal of Experimental Medicine 1980
L L Bausserman P N Herbert K P McAdam

Serum amyloid A proteins (SAA), presumed precursors of the tissue amyloid A proteins (AA) characteristic of secondary amyloidosis, have been isolated from the plasma high-density lipoproteins (HDL) of normals after etiocholanolone-induced inflammation and from patients with Wegener's granulomatosis, systemic lupus erythematosis, juvenile rheumatoid arthritis, Waldenström's macroglobulinemia, an...

Journal: :Infection and immunity 1992
M R Yeaman S M Puentes D C Norman A S Bayer

Thrombin-induced platelet microbicidal protein (PMP) is considered to play an important role in preventing an important role in preventing streptococcal endocarditis. However, the structural features and functions of PMPs have not been well characterized, and their antibacterial spectra against other common endocarditis pathogens, such as the staphylococci, are not known. Thrombin stimulation o...

Journal: :Physical Chemistry Chemical Physics 2021

Developing a coarse-grained force field for polyacrylamide based on quantum mechanics equation of state.

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