Phase diagrams and liquid–liquid equilibrium (LLE) data of aqueous polyethylene glycol 4000 (PEG4000) + di-potassium tartrate or potassium sodium tartrate and aqueous PEG4000 + di-potassium oxalate systems have been determined experimentally at 298.15 K. Furthermore, the Merchuk equation was us...

Water activity values of ternary aqueous sodium potassium tartrate (Na–K Tar) + poly (ethylene glycol) or poly (propylene glycol) solutions were measured using the isopiestic method at T = 298.15 K. Also the water activity for corresponding binary aqueous sodium potassium tartrate (Na–K Tar) s...

Phase diagrams and liquid – liquid equilibrium (LLE) data for aqueous two-phase systems (ATPSs) containing di-potassium tartrate (DPT) and poly (ethylene glycols) (PEG) (1500 and 6000) have been determined experimentally at different pH values (6.41, 7.74 and 9.05) and temperatures (298.15 and ...

Potassium tartrate (C4H6K2O7) was utilized as a novel activating agent to prepare activated carbon with relatively high specific surface area by using less activating agent and activation time from marine waste–green alga (Enteromorpha prolifera) for the first time. The influences of activation...

Potassium tartrate as activator was used to produce porous carbon materials (PCMs) by activating petroleum cokes (PC), fallen leaves (FL), chicken feathers (CF) and Enteromorpha prolifera (EP) under the identical conditions (activation temperature of 750 °C, impregnation ratio of 2.5:1 and acti...

The ability of potassium tartrate hemihydrate as a radiation sensitive material for electron paramagnetic resonance (EPR) dosimetry was investigated. The samples were subjected to different doses, in the range of 1–9 Gy of 60Co gamma rays at room temperature. The EPR spectra were investigated t...

Potassium tartrate solubility in water was measured and the aqueous biphasic system formed by this organic salt and PEG (1500 or 600) were characterized experimentally at 278.15, 293.15 and 308.15 K by measuring the composition of the equilibrium phases. The experimental binodal curves and the t...

A new single-step efficient photocchemical approach for α-arylpropanoic acids (4) from α chloro-propiophenones (5) is described. It involves carbonyl triplet excited state directed 1,2-aryl migration of the aryl group which has been found to be highly dependent upon the nature of the aryl subs...

Photochemistry of different α-substituted and phenyl-substituted propiophenones in methanol is investigated with a view to delineate the substituent effect with a special reference tu their rearrangement to α-arylpropanoic acids, an important class of nonsteroidal antiinflammatory agents. The ...

Hydroxylation of 4-chloropropionanilide to 4-chlorohydracrylanilide, ω-hydroxylation, and to 4-chlorolactanilide, (ω-1)-hydroxylation, by rabbit liver microsomes were found to be stimulated differently by treatment of rabbits with phenobarbital or 3-methylcholanthrene. ω-Hydroxylation was not...

4-Chlorolactanilide, 4-chlorohydracrylanilide, 4-chloroglyceranilide, and 4-chloroglycolanilide were isolated from urine of rabbits injected with 4-chloropropionanilide. The product of (ω-1)-hydroxylation amounted to nearly 30 per cent of the dose and the ω-OH derivative to about 4 per cent. A...

In our previous investigations [1], urine of female mice contained specific compounds, namely isocroctylhydrazine, 4-methyl-2-heptanone, and azulene during proestrus, whereas during estrus it contained 1-H-cyclopop.e.azulene, caryophyllene, and copanene. Furthermore, 1-iodo-2 methyl undecane (1I...

(Azidomethyl)boronic esters of 1,2-dicyclohexyl-1,2-ethanediol (“DICHED”) and pinanediol have been prepared from the corresponding (bromomethyl)boronic esters. Conversion to (2-azido-1-chloro- or bromoethyl)boronic esters by reaction with a (dihalomethyl)lithium followed. Attempted displacemen...

2-[2-(2,2-Bis-ethoxycarbonyl-ethyl)-benzyl]malonic acid diethyl ester 2, 3-[2-(2-ethoxycarbonyl-ethyl)-phenyl]-propionic acid ethyl ester 3, 2-[2-(2,2-bis-ethoxycarbonyl-propyl)-benzyl]-2-methyl-malonic acid diethyl ester 4, 7,8-bis-trimethylsilanyloxy-5,6,9,10-tetrahydro-benzocyclooctene 5, and...

A method for the synthesis of pinacol boronic esters bearing a fluorinated group at the α-carbon atom (RfCH2Bpin) from corresponding bromomethyl borane (BrCH2Bpin) and fluorinated silanes (RfSiMe3) is described. The fluoroalkylation reaction involves formation of borate anions followed by intra...

A new diamine monomer namely 4,4′-((2′,5′-bis(benzyloxy)-3,3′'-bis(trifluoromethyl)-[1,1′:4,4′'-terphenyl]-4,4′'-diyl)bis(oxy))dianiline (TADBE) was prepared. A series of sulfonated co-poly(ether imide)s was synthesized using this diamine as one of the co-monomers along wit...

The step-by-step growth of yttrium oxide layer was controlled in situ using X-ray photoelectron spectroscopy (XPS). The O/Y atomic concentration (AC) ratio in the surface layer of finally oxidized Y substrate was found to be equal to 1.48. The as-grown yttrium oxide layers were then analyzed ex ...

High-purity yttrium oxide (Y2O3) powder is successfully prepared by microwave-assisted calcination of yttrium oxalate. The decomposition process of yttrium oxalate was analyzed by TG-DSC indicate formation of Y2O3 undergoes three stages. The X-ray diffraction (XRD) analysis indicates that there ...

The anticorrosive property of yttrium oxide was evaluated using chlorine trifluoride gas. After the exposure to chlorine trifluoride gas at room temperature for the total time longer than 1000 min, the yttrium oxide film, formed on a quartz glass surface, did not show any etching behavior and su...

Oxidative stress plays a major role in acute pancreatitis (AP), leading to massive macrophage infiltration. Nanoyttria (NY) possesses potent free radical scavenging activity. As reactive oxygen species and inflammation play major role in AP, we hypothesized that NY may alleviate cerulein induced...