The magnesium-rich intermetallic phases RE3RuMg7 (RE = Y, Nd, Dy, Ho) have been synthesized from the elements in sealed niobium ampoules and subsequently characterized by powder X-ray diffraction. The structure of the dysprosium compound was refined on the basis of single-crystal X-ray diffractometer data: Ti6Sn5 type, P63/mmc, a = 1019.1(2), c = 606.76(9) pm, wR2 = 0.0159, 439 F2 values, 19 va...

We present (29)Si, (27)Al, and (67)Zn NMR evidence to show that silicate ions in alkaline solution form complexes with zinc(II) (present as zincate, Zn(OH)(3)(-) or Zn(OH)(4)(2-)) and, concomitantly, with aluminate (Al(OH)(4)(-)). Zincate reacts with monomeric silicate at pH 14-15 to form [(HO)O(2)Si-O-Zn(OH)(3)](4-) and with dimeric silicate to produce [HO-SiO(2)-O-SiO(2)-O-Zn(OH)(3)](6-). The...

The crystal structure of the title compound, [Ho(NO(3))(3)(C(15)H(15)NO(2))(2)]·H(2)O, contains two Schiff base 6-meth-oxy-2-[(4-methyl-phen-yl)iminiometh-yl]phenolate (L) ligands, three independent nitrate ions that chelate to the Ho(III) ion with O atoms and a hydrate water mol-ecule. The coordination environment of the Ho(III) ion is ten-coordinate. The L ligands chelate with a strong Ho-O(p...

Kelly J. Brunst, Ph.D.1,2,†, Yuet-Kin Leung, Ph.D.2,3, Patrick H. Ryan, Ph.D.1,2,4, Gurjit K. Khurana Hershey, M.D., Ph.D.5, Linda Levin, Ph.D.1,2, Hong Ji, Ph.D.5, Grace K. LeMasters, Ph.D.1, and Shuk-Mei Ho, Ph.D.2,3,6 1Division of Epidemiology and Biostatistics, University of Cincinnati College of Medicine, 3223 Eden Avenue, Kettering Building, Cincinnati, OH 2Center for Environmental Geneti...

The reaction of intracomplex proton transfer (44BPY(-.)...HO-H) (R)-->44BPYH(.)+ OH(-) that follows the photoreduction of 4,4'-bipyridine (44BPY) into its anion radical 44BPY(-) in the presence of 1,4-diazabicyclo[2.2.2]octane (DABCO) is investigated in acetonitrile-water mixtures by using picosecond transient absorption. The dependence of the appearance kinetics of the 44BPYH(.) radical on the...

Andrea C Tricco ([email protected]) Charlene Soobiah ([email protected]) Erik Blondal ([email protected]) Areti A Veroniki ([email protected]) Paul A Khan ([email protected]) Afshin Vafaei ([email protected]) John Ivory ([email protected]) Lisa Strifler ([email protected]) Huda Ashoor ([email protected]) Heather MacDonald ([email protected]) Emily Reynen ([email protected]) Reid Robson (reidcrobson@...

Whaseon Lee-Kwon,1,* Jae Ho Kim,1,2,* Jung Woong Choi,1 Kazuya Kawano,1 Boyoung Cha,1 Darlene A. Dartt,3 Driss Zoukhri,3 and Mark Donowitz1 1Department of Medicine, Gastrointestinal Division, The Johns Hopkins University School of Medicine, Baltimore, Maryland 21205; 2Division of Physiology, Pusan National University, Pusan, Republic of Korea; and 3The Schepens Eye Research Institute, and Harva...

The use of biochar has received growing attention because of its ability to improve the physicochemical properties of highly weathered Ultisols and Oxisols, yet very little research has focused on its effects in Aridisols. We investigated the effect of low or high temperature (250 or 500°C) pyrolyzed switchgrass () biochar on two Aridisols. In a pot study, biochar was added at 2% w/w to a Declo...

The fate of hydrocortisone in man has been extensively studied (l-7) but the quantitative aspects of the transformation to its many metabolites in individual normal subjects leave much to be desired (8-16). This study reports the metabolism of an intravenous dose of hydrocortisone-4-Cl4 in five normal male subjects and of an oral dose in one of these subjects. The metabolites” cortol, /I-cortol...

Phytotoxic Activity of the 6-acetyl-5-hydroxy-2isopropenyl-2,3-dihydrobenzofurane (1) isolated from Trichocline reptans (Asteraceae) was investigated in two weed species. Results indicate that the best growth inhibition effect ocurres on Chenopodium album weed. Phythotoxic effect of the T. reptans chloroformic extract and of the benzofurane are discussed and compared in the two weed species. In...