High-performance liquid chromatographic (HPLC) methods were developed for the analysis of two compounds in a series of new antiallergenic agents, 1-[4-[3-[4-[bis(4-fluorophenyl)hydroxymethyl]-1-piperidinyl]propoxy]-3-methoxyphenyl]ethanone and its active acidic metabolite in plasma. The methods ...

This paper assesses whether Chapter 11 is a form of subsidy for US airlines. US airlines have used Chapter 11 to restructure their operations. This has been criticized as a subsidy by major non US airlines and governments for a long time and recently, in the “level playing field” debate. Apply...

Methyl tert-butyl ether (MTBE) degradation technologies based on two-phase partitioning systems such as extractive membrane biofilm reactors (EMBFR) permit separation of biological and contaminant compartments, thus allowing optimization of the biological section. In this study, we set-up an EMB...

Temporal changes in methyl tert-butyl ether (MtBE) concentrations in groundwater were evaluated in the northeastern United States, an area of the nation with widespread low-level detections of MtBE based on a national survey of wells selected to represent ambient conditions. MtBE use in the U.S....

Vapor intrusion of synthetic fuel additives represents a critical yet still neglected problem at sites contaminated by petroleum fuel releases. This study used an advanced numerical model to investigate the vapor intrusion potential of fuel ether oxygenates methyl tert-butyl ether (MTBE), tert-a...

This study employed innovative technologies to evaluate multiple lines of evidence for natural attenuation (NA) of methyl tertiary-butyl ether (MTBE) in groundwater at the 22 Area of Marine Corps Base (MCB) Camp Pendleton after decommissioning of a biobarrier system. For comparison, data from th...

The post-synthetic MIL-53(Al)-SO3H was prepared and incorporated into sulfonated polyarylethersulfone with cardo (SPES-C) polymer matrix to form mixed matrix membranes (MMMs). The as-prepared MIL-53(Al)-SO3H was characterized by wide angle X-ray diffraction (WAXRD), fourier transform infrared sp...

Searching for green solvents is imperative for the sustainable development of liquid-liquid extraction. Liquid-liquid equilibrium data for two ternary systems of methyl tert-butyl ether (MTBE) + methanol + N-methylimidazolium hydrosulfate ([MIM][HSO4]) and MTBE + methanol + 1-butyl-3-methylimida...

Air pollution is considered a major problem, especially the pollution from transportation. Methyl tert-butyl ether (MTBE) is commonly used as a gasoline additive. MTBE is obtained from incomplete combustion of gasoline and causes environmental problems. Biochars derived from agricultural waste, ...

Methyl tert-butyl ether (MTBE), as a widely used gasoline additive, is suspected of being environmentally toxic. MTBE accumulates mainly in adipose tissue, but its effect on obesity or obesity-related metabolic disorders has not been well understood yet. Therefore, we examined the effect of MTBE...

To separate thioglycolic acid (TGA) from its aqueous mixture, isopropyl ether and methyl tert-butyl ether were adopted as extractants, and the liquid-liquid equilibrium data for the ternary systems water + TGA + isopropyl ether/methyl tert-butyl ether were determined at 298.15 K and 308.15 K und...

A novel magnetic bio-adsorbent has been prepared by the loading of Fe3O4 NPs and immobilization of 1,4-butane sultone on the surface of activated carbon. The activated carbon was synthesized from pistachio shell as a carbon material of biogenic, bio-resources and its use is cost effective. Struc...

The MAP kinase (Ras/MEK/ERK) and PI3K/Akt/mTOR oncogenic signaling pathways are central regulators of KRAS-mediated transformation. Molecular reciprocity between the Ras/MEK/ERK and PI3K/Akt/mTOR pathways provides cancer cells with the ability to evade treatment when targeting only one pathway w...

Charge transfer interactions (CT) between a gliclazide (GLC) donor and a picric acid (PA) π acceptor or iodine σ acceptor, were studied in a chloroform solution and in the solid state. UV–vis spectroscopy elucidated the formation of the complexes, and allowed determination of the stoichiometr...

Twelve di- and tri-organotin derivatives of dithiocarbamylacetic acids of the formula RnSn(O2CCH2S2CNR′2)4−n (R = Me, nBu, cHex, Ph; NR′2 = NME2, NEt2, N(CH2)4, N(CH2CH2)2O; n = 3, 2) have been prepared. On the basis of IR and Mössbauer spectroscopic data, the trimethyl-, tri-n-butyl-and triph...

The effect of solvents upon the effective strength of acids in solution was studied in the strong acid range by the measurement of the Δ δ parameter for mesityl oxide at stoichiometric acid/base ratio (Δ δ1) and in the weak superacid range by the measurement of the hydronation of hexamethylb...

Methylene blue photocatalyzed electron transfer reactions of some phenoxyacetic acid derivatives and N-phenylglycine across a liquid/liquid interface led to their efficient decarboxylation. Nanosecond laser flash photolysis studies of this process, in a reverse micellar system of Aerosol-OT (AOT...

Simple dicarboxylic acids: adipic (1), succinic (2) and malonic (3); more complex linear tetrapyrroles with two propionic acid groups: mesobiliverdin-XIIIα (4) and mesobilirubin-XIIIα (5), and a rubin analog with a gem-dimethyl at C10 (6) were prepared with 99% 13C-enrichment in their CO2H gro...

The complexation of Pb(II) by carboxylic acids and aminocarboxylic acids was studied by 207Pb NMR. The results indicate that the 207Pb chemical shift provides a sensitive probe of the aqueous coordination chemistry of Pb(II). A single, exchange-averaged resonance is observed for lead in solution...

A general process for the purification of large quantities (5–10 g) of p-nitrobenzyl C-functionalized diethylenetriamine pentaacetic acids is reported. The method of choice to achieve purification for clinical applications is anion-exchange chromatography.