Measurements have been made of the electrochemical properties of LiBr·H2O LiI·H2O, using stainless steel and lithium electrodes. A.C. impedance spectra have been recorded. It has been shown that both of these solids are lithium ion conductors at room temperature. There is the possibility of so...

Mixtures of anhydrous lithium iodide and lithium hydroxide monohydrate exhibit conductivity transitions in the region of 170°C and 100°C. At the lower temperature transition, increases of two to three orders of magnitude are observed in mixtures containing as little as 1/80 by weight of LiOH·...

The solid electrolytes LiI, LiI,H2O and LiI,D2O have been characterized by ac- and dc-conductivity measurements. LiI exhibits two conductivity regions: an extrinsic below ≈ 180°C and an intrinsic above, with activation energies of 0.43±0.04 eV and 0.81±0.05 eV respectively. The room temperat...

From resonances of proton, deuteron and lithium in LiI·H2O and/or LiI·D2O between 80 and 400 °K, the statistical disorder above 280°K in this cubic perovskite structure was found to be dynamic: the water molecules are reorienting themselves at the body-center position with an activation ener...

Nuclear Magnetic Resonance studies of line narrowing (T2), spin-lattice relaxation (T1), and spectral changes with temperature have been carried out on single crystals of LiI·D2O and LiI·H2O, as well as upon pure and SiO2 doped LiH·H2O powder. Activation energies and correlation times for Li+...

The crystal structure of LiI·H2O suggests that the conductivity of this material should be significantly higher from that of anhydrous LiI. Measurements of the conductivity of LiI·H2O give values as high as 10−5 ω−1 cm−1. However, the high conductivity of the monohydrate cannot account for th...

Extraction of frankincense—a fragrant resin obtained from plants of the genus Boswellia—followed by an oxidation furnished high yields of (3β) 3-O-acetyl-11-keto-β-boswellic acid (β-AKBA), a valuable starting material for accessing boswellic acid derivatives. Boswellic acids are fascinating...

The oleo gum resin of Boswellia serrata belonging to family Burseraceae, is Ayurvedic medicine and has been used for the treatment of inflammatory diseases and arthritic diseases in many countries. Acetyl 11-keto-β-boswellic acid (AKBA) is a potent anti-inflammatory agent obtained from oleo gum...

Acetyl 11 keto β boswellic acid (AKBA), a potent anti-inflammatory agent obtained from Boswellia serrata oleogum resin, is mostly used for the treatment of various chronic inflammatory diseases. Ethanol modified supercritical fluid extraction (SFE) was employed to extract AKBA from Boswellia se...

11-Keto-β-boswellic acid (KBA), as one of the active constituents in the gum resin of Boswellia serrata, possesses significant biological activities including anti-inflammatory activity. However, its extensive metabolism and low polarity has limited the systemic availability of KBA. The present...

ObjectiveRecurrence of ovarian cancer is mainly due to multidrug resistance (MDR). 3-acetyl-11-keto-beta-boswellic acid (AKBA) could reverse the multidrug resistance in human ileocecal adenocarcinoma cells, but whether AKBA could modulate acquired MDR in ovarian cancer needs to be elucidated.

A selective acidic system for partial deacetylation of phenolic d-glucopyranosides per-acetates has been developed that allows synthesis of the corresponding 2′-O-acetyl-d-glucosides. Many disadvantages of generally used methods for preparing such mono-acyl derivatives involving multistep proce...

Reactions of 2-(arylazo)aniline, HL (H represents the dissociable protons upon orthometallation and HL is p-RC6H4NNC6H4–NH2; RH for HL1; CH3 for HL2 and Cl for HL3) with IrCl3 in methanol afforded orthometallated complexes of composition (L)(HL)IrCl2 (2) and (L)(MeOH)IrCl2 (3), respectively. Co...

Under most reaction conditions studied, acrolein is reported as the primary product in the conversion of glycerol over zeolites. In such processes, acrolein forms at relatively high yields, with negligible allyl alcohol selectivity. In this contribution, we report the development of ZSM5-support...

The research and application of green chemistry principles have led to the development of cleaner processes In this sense, ionic liquids (ILs) are being researched intensively as greener alternatives to volatile organic media in a wide range of chemical processes Ionic liquids are salts with mel...

Butyrylcholinesterase (BuChE) inhibitors have become interesting target for treatment of Alzheimer's disease (AD). A series of dual binding site BuChE inhibitors were designed and synthesized based on 2,3,4,9-tetrahydro-1H-carbazole attached benzyl pyridine moieties. In-vitro assay revealed...

In this work, titanium dioxide particle was firstly modified with glutaraldehyde, and modification conditions, i.e. particle size (d), active temperature (Ta), modification temperature (Tm), modification time (tm), pH value, aldehyde ethanol ratio (Ra) and ethanol ratio (Re), were studied and op...

Selective extraction of hydrophilic compounds is a challenging task for analytical laboratories. In an attempt to address this issue, application of titanium dioxide nanoparticles as a dispersive solid phase extraction sorbent was investigated. In the study, three model analytes were used for me...

This study investigated the surface characteristics and biocompatibility of phosphate ion (P)-incorporated titanium (Ti) surfaces hydrothermally treated with various concentrations of phosphoric acid (H3PO4). The surface characteristics were evaluated by scanning electron microscopy, thin-film X...

The sodium l-glutamate is reported as an efficient catalyst for the cross-linking between 1,2,3,4-butanetetracarboxylic acid (BTCA) and cellulose. Results presented ester absorbance of the treated fabrics strongly increased in the presence of the homemade l-glutamate salt, a mixture of l-glutami...