نتایج جستجو برای: borate
تعداد نتایج: 3395 فیلتر نتایج به سال:
Structures of Orthoborate Anions and Physical Properties of Their Lithium Salt Non-aqueous Solutions
We compare the physical properties and solution conductivities of three new lithium orthoborate salts with those of the well known slat lithium bis(trifluoromethanesulfony)imide LiTFSI. The three new lithium salts are lithium bis(perfluoropinacolato)borate (LiBPFPB), lithium bis(oxalato)borate (LiBOB) and lithium bis(malonato)borate (LiBMB). Computational models of the three orthoborate anions ...
Titanium addition influences antibacterial activity of bioactive glass coatings on metallic implants
In an attempt to combat the possibility of bacterial infection and insufficient bone growth around metallic, surgical implants, bioactive glasses may be employed as coatings. In this work, silica-based and borate-based glass series were synthesized for this purpose and subsequently characterized in terms of antibacterial behavior, solubility and cytotoxicity. Borate-based glasses were found to ...
Boron plays important roles in many life processes including embryogenesis, bone growth and maintenance, immune function and psychomotor skills. Thus, the delivery of boron by the degradation of borate glass is of special interest in biomedical applications. However, the cytotoxicity of borate glass which arises with the rapid release of boron has to be carefully considered. In this study, it w...
Four methods of extraction and three methods of concentration of three enteric viruses from mussels were comparatively evaluated by reverse transcriptase PCR (RT-PCR). Shellfish were experimentally contaminated by immersion in seawater seeded with astrovirus, hepatitis A virus, or poliovirus. Sixty-gram samples of mussel tissues were processed by using borate buffer, glycine solution, saline be...
The pH and buffer capacity of dry wood flakes from eleven southern species and their effects on gel time of phenol formaldehyde (PF) oriented strandboard resin with and without zinc borate addition were investigated in this study. It was shown that the pH of the hardwood flakes was acidic, with white oak being the most acidic (pH = 4.60) and elm nearly neutral (pH = 6.93). Southern pine flakes ...
D-Serine apodehydratase from Escherichia coli is rapidly inactivated by butanedione in K+ borate buffer or by phenylglyoxal in K+ phosphate buffer at pH 8, 25 degrees. Pyridoxal-P protects against the inactivation. Modification of the apoenzyme abolishes its ability to bind the cofactor, pyridoxal-P, but the apparent Km for the substrate, D-serine, is not altered. The concentration dependence o...
a novel potentiometric ion-selective pvc membrane sensor for analysis of atorvastatin (at) in pharmaceutical preparations based on atorvastatin-(tetraphenyl borate), (at-(tpb)2) as sensing element, tetraphenyl borate as additive and tris-2-ethyl-hexyl phosphate (top) as plasticizer solvent was prepared. the electrode shows a good nernestian response over the concentration range of 0.09–5586 µg ...
An in situ approach involving a simple mix and shake method for testing the enantiopurity of primary, secondary and tertiary chiral amines and their derivatives, chiral amino alcohols, by (1)H-NMR spectroscopy is developed. The protocol involves the in situ formation of chiral ammonium borate salt from a mixture of C2 symmetric chiral BINOL, trialkoxyborane and chiral amines. The proposed conce...
Penicillium expansum, a widespread filamentous fungus, is a major causative agent of fruit decay and may lead to the production of mycotoxin that causes harmful effects on human health. In this study, we compared the cellular and extracellular proteomes of P. expansum in the absence and presence of borate, which affects the virulence of the fungal pathogen. The differentially expressed proteins...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید