A new aryl alkyl ketone was isolated from a cell suspension culture of Humulus lupulus cv Wye Northdown. Its structure is established as 1-phenyl-(4′-hydroxy)-n-nonanone, using spectroscopic methods.

Microwave irradiation has been a promising alternative to conduct several chemical reactions. In this work the microwave effects in potassium persulfate decomposition rate, under controlled conditions of temperature and microwave power, were evaluated. Higher decomposition rate constants were ob...

In the presence of low frequency ultrasound (US) generated from an ultrasonic cleaning bath, the degradation efficiency of nitrobenzene (C6H5NO2, NB) by Zn0-activated persulfate (PS) reached 96% within 2 h, which is much higher than that by PS or Zn0 alone in the presence of US or that by Zn0-ac...

Elution of sodium persulfate on spinel-type LiMn2O4 were investigated based on the research of hydrolytic process of sodium persulfate solution at different conditions. The hydrolysis of sodium persulfate followed first order kinetics, and the activation energy and pre-exponential factor were 12...

We report on the use of europium (Eu) as a suitable nonradioactive alternative for target cell labeling in limiting dilution analysis (LDA) assays set up to determine cytotoxic T-lymphocyte precursor (CTLp) frequencies. A nonradioactive alternative to the commonly used chromium-51 (51Cr) release...

Evidence for the existence of the outer-sphere ion-pair Cr(H2O)63+.Cl− in aqueous solutions containing chromium(III) and chloride is presented. The stability constant for the formation of the species has been determined at different fixed temperatures for solutions of ionic strength 1 M maintain...

A simple and quick method has been developed for labelling heparin with 51Cr. The radio-chemical purification of the heparin 51Cr complex was made by use of EDTA as the complexing agent. Sephadex G-50 chromatography was used for the separation of EDTA 51Cr and heparin 51Cr. The labelling procedu...

The Chromium-51 release assay is a widely used technique to assess the lysis of labeled target cells in vitro. We have developed a simple technique to analyze data from Chromium-51 release assays using the widely available LOTUS 1-2-3 spreadsheet software. This package calculates percentage spec...

Rationale and Objectives.We wanted to improve determination of the glomerular filtration rate (GFR) with plasma clearance techniques because the alternative—renal clearance techniques—may involve inaccurate urine sampling or risk of urinary tract infection when bladder catheterization becomes ...

Manganese-52g, 54 and Chromium-51 production cross-section measurements were conducted using natural chromium foils and copper monitor foils. Proton beam energies between 10 and 20 MeV were used for target bombardment. After bombardment, the irradiated foils were allowed to decay for at least 48...

Rationale and Objectives.To improve the measurement of the glomerular filtration rate (GFR), we determined the extrarenal plasma clearance of the GFR markers iohexol, chromium-51-ethylenediaminetetraacetic acid (51Cr-EDTA), and inulin using 11 anephric pigs.

Interleukin-1 controls some plasma metals; depresses iron and zinc, increases copper and causes redistribution of these metals in some tissues. When the production and activity of IL-1 persists and escapes regulation, IL-1 itself contributes to pathological processes often seen in the elderly; i...

Publisher SummaryThis chapter focuses on the chromium-51 radioimmunoassay for chemotaxis. Subsequently, it has been modified for use with monocytes and other leukocytes, and some laboratories have used microassay to minimize the amount of material employed. In this assay, leukocytes are labeled ...

Unusual behavior of chromium-51 in liquid scintillation cocktail is described. Rapidly declining count rate is attributed to first-order binding of chromate to glass vials.

The regioselective synthesis of four caged InsP6 derivatives is described. The synthesis employed allyl ester protecting groups, and Rh(I) could selectively deprotect all allyl phosphates in a single step without affecting the photolabile moieties.

Novel palladium(II) and platinum(II) complexes (trans-[PdCl2L2] and trans-[PtCl2L2] {L = 2-(5-methyl-1H-tetrazol-1-yl)acetamide, N-(sec-butyl)-2-(5-methyl-1H-tetrazol-1-yl)acetamide, N-cyclopropyl-2-(5-methyl-1H-tetrazol-1-yl)acetamide, N-cyclohexyl-2-(5-methyl-1H-tetrazol-1-yl)acetamide, 2-(2-(...

Reaction of MCl2·4H2O (M=Zn, Cd, Mn, Co, Ni ) with 2-(5-(pyrazin-2-yl)-2H-tetrazol-2-yl) acetic acid (Hpztza) yielded a set of new M(II)/pztza complexes, [Cd(pztza)2(H2O)6]·3H2O·(Hpztza) (1), [M(pztza)2(H2O)2] [M=Cd(2), Zn(7), Mn(9)], [Cd(pztza)2]·2(CH3OH) (3), [Co(pztza)2(H2O)2]·6H2O (4), ...

Self-assembly of d10 metal salts with a semi-rigid V-shaped N-containing ligand affords two entangled coordination frameworks, namely [Zn2(bdc)1.5(tbpp)] (1) and [Cd(tbpp)2(H2O)]·H2O (2) (Htbpp = 4-(1-(4-(2H-tetrazol-5-yl)benzyl)-1H-pyrazol-3-yl)pyridine, H2bdc = 1,4-benzenedicarboxylate acid)....

Two synthetic approaches towards 4′-(2H-tetrazol-5-yl)-[1,1′-biphenyl]-4-carboxylic acid, a valuable organic ligand for the preparation of metal-organic frameworks, are reported. The first reaction sequence leading to the target compound comprises the iodination of [1,1′-biphenyl]-4-carboxyli...

Pyroligneous acid was produced by subjecting the stem and leaves of pineapple plants from a local plantation area to slow pyrolysis in a charcoal kiln for 48 h. The concentrated pyroligneous acid from pineapple plant waste biomass (CPAP: Concentrated pyroligneous acid from pineapple waste biomas...