نتایج جستجو برای: cationic
تعداد نتایج: 18964 فیلتر نتایج به سال:
Cationic ordering in Sr2FeReO6 (SFRO) and Sr2CrReO6 (SCRO) is investigated using magnetic property measurement, atomic-scale imaging, and first-principles calculations. We find that the nature of cationic ordering strongly depends on the host oxides, although they have the same crystal symmetry and chemical formula. Firstly, adding Re is effective to enhance the cationic ordering in SFRO, but m...
Rheological studies of the ceramic based concentrated titania nanoparticle dispersions showed a clear correlation between molecular structure of the cationic polymers used as dispersants and the viscosity of the slurries. Dynamic viscosity of the electrostatically stabilized alkaline (pH 10.0) dispersions of the bare titania nanopowders with a solid loading of 15 – 25 wt.% was rather high (abou...
High-yield pulp (HYP) such as bleached chemi-thermo-mechanical pulp (BCTMP) from aspen wood, is now being used in the production of highquality fine papers, and this is particularly true in China. In this study, the effect of using cationic polymers such as poly-aluminum chloride (PAC), polyethylenimine (PEI), cationic polyacrylamide (CPAM), and poly(diallyldimethylammonium chloride) (PDADMAC) ...
In food microbiology, novel strategies to fight foodborne pathogens are certainly welcome. In this data report, cationic nanostructures built from combinations of nanoparticles, antimicrobial peptide and cationic lipid are evaluated against important foodborne pathogens such as Escherichia coli, Salmonella enterica subsp. serovar Typhymurium, Staphylococcus aureus and Listeria monocytogenes. Th...
Rifkind, David (University of Colorado Medical Center, Denver), and John D. Palmer. Neutralization of endotoxin toxicity in chick embryos by antibiotics. J. Bacteriol. 92:815-819. 1966.-Three cationic cyclic polypeptide antibiotics, polymyxin B sulfate colistin sulfate, and tyrocidine hydrochloride, were shown to neutralize endotoxin lethality in chick embryos. The neutralizing potency of these...
In this paper, the synthesis of novel divalent cationic lipids with poly(ethylene glycol) segments is described. The lipids consist of an unsaturated double-chain hydrophobic moiety based on 3, 4-dihydroxy benzoic acid, attached to a hydrophilic poly(ethylene glycol) spacer which contains a divalent cationic end group. As poly(ethylene glycol) spacers monodisperse triethylene glycol and teleche...
Cationic, triple-chain amphiphiles promote vesicle fusion more than structurally related double-chain or single-chain analogues. Two types of vesicle fusion experiments were conducted, mixing of oppositely charged vesicles and acid-triggered self-fusion of vesicles composed of cationic amphiphile and anionic cholesteryl hemisuccinate (CHEMS). Vesicle fusion was monitored by standard fluorescenc...
Our Institute's nuclear, biological, and chemical defense research team continuously investigates and develops preparations for skin decontamination against nerve agents. In this in vivo study, we evaluated skin decontamination efficacy against sarin by a synthetic preparation called Mineral Cationic Carrier (MCC) with known ion exchange, absorption efficacy and bioactive potential. Mice were t...
Eosinophil cationic protein (ECP) in sputum may be used to estimate the severity of bronchial inflammation and obstruction in asthmatics as well as to monitor asthma drug therapy. For this purpose, standardized processing of sputum is important. The aim of our study was to determine whether time and temperature influence the ECP concentration in the sputum of asthmatics. The samples of induced ...
Studies have shown that eosinophils are closely related to pathogenesis of bronchial asthma. Eosinophils release eosinophil cationic protein (ECP), which plays an important role in infection and allergic reactions. Serum ECP mRNA expression in children with bronchial asthma has not been adequately investigated. We analyzed serum ECP mRNA expression in 63 children with bronchial asthma and 21 he...
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