bluuebunny/crossref_metadata_2025_split huggingface dataset:
Anomalous Reaction of Rh2(OAc)4‐Generated Transient Carbonyl Ylides: Chemoselective Synthesis of Epoxy‐Bridged Tetrahydropyranone, Oxepanone, Oxocinone, and Oxoninone Ring Systems.
Authors: Muthusamy Sengodagounder , Krishnamurthi Janagiraman , Babu Srinivasarao Arulananda , Suresh Eringathodi 
Published: June 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
“contra‐Michael” Addition of Alkyllithiums to Silicon‐ and Phenyl‐Substituted α,β‐Unsaturated Amides in the Presence of t‐BuOK.
Authors: Hinago Tomoko , Teshima Nana , Kenmoku Satoko , Kamata Tiyako , Terauchi Nahoko , Chiba Nao , Satoh Chikako , Nakamura Aya , Asaoka Morio 
Published: June 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
An Extremely Efficient Three‐Component Reaction of Aldehydes/Ketones, Amines and Phosphines (Kabachnik—Fields Reaction) for the Synthesis of α‐Aminophosphonates Catalyzed by Magnesium Perchlorate.
Authors: Bhagat Srikant , Chakraborti Asit K. 
Published: June 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
New Iridoid Glycosides from Lamium eriocephalum subsp. eriocephalum.
Authors: Yalcin Funda Nuray , Ersoez Tayfun , Avci Kuersat , Gotfredsen Charlotte H. , Jensen Soeren R. , Calis Ihsan 
Published: June 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Selective Monocyclization of Epoxy Terpenoids Promoted by Zeolite NaY. A Short Biomimetic Synthesis of Elegansidiol (IV) and Farnesiferols B—D (V)—(VII).
Authors: Tsangarakis Constantinos , Arkoudis Elias , Raptis Christos , Stratakis Manolis 
Published: June 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Synthesis of the Sesquiterpenoid Lactarane Skeleton by a Radical Cyclobutylcarbinyl/Cyclopropylcarbinyl Fragmentation Sequence.
Authors: Lange Gordon L. , Corelli Nadia 
Published: June 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Total Synthesis of (‐)‐Senepodine G (I) and (‐)‐Cermizine C (II).
Authors: Snider Barry B. , Grabowski James F. 
Published: June 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Total Synthesis of (.+‐.)‐Debromoflustramine B and E and (.+‐.)‐Debromoflustramide B Based on One‐Pot Intramolecular Ullmann Coupling and Claisen Rearrangement.
Authors: Miyamoto Hiroshi , Okawa Yoichiro , Nakazaki Atsuo , Kobayashi Susumu 
Published: June 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Helical Self‐Assembled Chromophore Clusters Based on DNA‐Like Architecture.
Authors: Mayer‐Enthart Elke , Wagner Clemens , Barbaric Janez , Wagenknecht Hans‐Achim 
Published: June 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
A Fluorescence‐Quencher Pair for DNA Hybridization Studies Based on Hydrophobic Base Surrogates.
Authors: Stoop Matthias , Zahn Alain , Leumann Christian J. 
Published: June 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Characterization of Fluorescent, Unnatural Base Pairs.
Authors: Mitsui Tsuneo , Kimoto Michiko , Kawai Rie , Yokoyama Shigeyuki , Hirao Ichiro 
Published: June 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Conformational Flexibility of Ribosomal Decoding‐Site RNA Monitored by Fluorescent Pteridine Base Analogues.
Authors: Parsons Jerod , Hermann Thomas 
Published: June 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Designing New Isomorphic Fluorescent Nucleobase Analogues: The Thieno[3,2‐d]pyrimidine Core.
Authors: Tor Yitzhak , Del Valle Susan , Jaramillo David , Srivatsan Seergazhi G. , Rios Andro , Weizman Haim 
Published: June 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Nonalkaloid Constituents from Stemona japonica
Authors: Yang Xin‐Zhou , Lin Li‐Gen , Tang Chun‐Ping , Liu Yong‐Qiang , Ye Yang 
Published: June 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Structure Elucidation of Auxofuran, a Metabolite Involved in Stimulating Growth of Fly Agaric, Produced by the Mycorrhiza Helper Bacterium Streptomyces AcH 505.
Authors: Keller Simone , Schneider Kathrin , Suessmuth Roderich D. 
Published: June 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
TMC‐151 A Monoacetate, a New Polyketide from Bionectria ochroleuca.
Authors: Ju Yu‐Ming , Juang Shin‐Hun , Chen Ke‐Jun , Lee Tzong‐Huei 
Published: June 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Hollow Silica Nanospheres: In situ, Semi‐in situ, and Two‐Step Synthesis.
Authors: Darbandi Masih , Thomann Ralf , Nann Thomas 
Published: June 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Hexafluoro‐, Heptafluoro‐, and Octafluoro‐Salts, and [MnF5n+1]‐ (n = 2, 3, 4) Polyfluorometallates of Singly Charged Metal Cations, Li+—Cs+, Cu+, Ag+, In+ and Tl+
Authors: Mazej Zoran , Hagiwara Rika 
Published: June 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
New Directions for Low‐Dimensional Thermoelectric Materials
Authors: Dresselhaus Mildred S. , Chen Gang , Tang Ming Y. , Yang Ronggui , Lee Hohyun , Wang Dezhi , Ren Zhifeng , Fleurial Jean‐Pierre , Gogna Pawan 
Published: June 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Magnetically Soft Nanomaterials for High‐Temperature Applications
Authors: Kulik T. , Ferenc J. , Kolano‐Burian A. , Liang X. B. , Kowalczyk M. 
Published: June 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Growth, Interface Structure, and Magnetic Properties of Fe/GaAs and Fe3Si/GaAs Hybrid Systems
Authors: Herfort Jens , Trampert Achim , Ploog Klaus H. 
Published: June 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Oxime Palladacycles Revisited: Stone‐Stable Complexes Nonetheless Very Active Catalysts
Authors: Alacid Emilio , Alonso Diego A. , Botella Luis , Najera Carmen , Pacheco M. Carmen 
Published: June 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Progress of Studies on the Natural Cembranoids from the Soft Coral Species of Sarcophyton Genus
Authors: Li Yulin , Peng Lizeng , Zhang Tao 
Published: June 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Total Synthesis of Natural Terpenoids Containing the Bicyclo[5.3.0]decane Skeleton
Authors: Carret Sebastien , Coquerel Yoann , Giannini Audrey , Banchelin Thomas Sainte‐Luce , Depres Jean‐Pierre 
Published: June 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Synthesis of Benzonaphthazepine and Pyrrolophenanthridine Alkaloids Using a Pd‐Mediated Biaryl Coupling Reaction Involving Regioselective C—H Activation by Intramolecular Coordination of a Benzylamine to Pd
Authors: Harayama Takashi 
Published: June 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Natural Porphyrins: Chlorophylls. UV—VIS Spectrophotometric Measurement and Calculations
Authors: Fagadar‐Cosma Eugenla , Fulias Adriana , Chlriac Adrian 
Published: June 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Stereoselective toxicokinetics and tissue distribution of ethofumesate in rabbits
Authors: Zhu Wentao , Dang Ziheng , Qiu Jing , Lv Chunguang , Jia Guifang , Li Li , Zhou Zhiqiang 
Published: June 2007

AbstractThe stereoselective toxicokinetics of ethofumesate enantiomers following a single intravenous (i.v.) administration at doses of 30 mg/kg were investigated in rabbits. Plasma concentrations of (+)‐ and (−)‐ethofumesate were analyzed by a validated chiral HPLC method that involved extraction of plasma with organic solvent followed by separation on a cellulose‐Tris‐(3,5‐dimethylphenylcarbamate)‐based chiral column and quantification by UV absorbance at 230 nm. Plasma concentration‐time curves after i.v. administration were best described by an open two‐compartment model. The concentration of the (−)‐enantiomer decreased more rapidly than that of the (+)‐enantiomer. Significant differences in toxicokinetic parameters between the two enantiomers indicated that stereoselective behavior occurred with the (−)‐enantiomer being preferentially metabolized and eliminated. Chirality 19:632–637, 2007 © 2007 Wiley‐Liss, Inc.
Silicon crystal fibers: difficulties and progress
Authors: Alshourbagy M. , Toncelli A. , Tonelli M. , Marchetti F. 
Published: June 2007

AbstractIn this work difficulties and the progress in growing Silicon fibers by μ‐PD technique have been reported. Some main instability growth problems have been solved. Smooth temperature gradient is obtained for longer distance in and under the hot zone part by making an effective change in our hot zone. Also we obtained temperature stabilization as good as 0.2 K. The level of impurities was minimized by using etching and baking processes. (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
Growth and spectroscopic investigation of Yb/Nd co‐doped KLu(WO4)2 laser crystals
Authors: Zhao Hongyang , Wang Jiyang , Ling Zongcheng , Li Jing , Zhang Huaijin , Zhang Jianxiu , Xia Hairui 
Published: June 2007

AbstractSingle crystals of Yb, Nd: KLu(WO4)2 (Yb, Nd: KLW) of dimensions up to 40mm× 40mm×5mm have been grown by top‐seeded solution growth (TSSG) method. X‐ray powder diffraction pattern was measured and compared with that of Nd: KLuW and Yb: KLuW. Absorption and fluorescence spectra were measured at room temperature. The Judd‐Ofelt theory was applied to analyze the spectrum of Nd, Yb: KLuW crystal. The intensity parameters Ωt (t=2, 4 and 6) were calculated as Ω2=20.68×10‐20cm2, Ω4=11.04×10‐20cm2, Ω6=6.74×10‐20cm2 respectively, with a root mean square deviation of 0.58×10‐20 cm2. (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
Dendritic flower calcium hydroxide grown on aluminium substrate using polyacrylamide as a template
Authors: Jiang Yabing , Chen Qinghua , Chen Jiangan , Xiao Liren , Xu Jing , Liu Xinping , Huang Baoquan 
Published: June 2007

AbstractThis paper reports one method to grow dendritic flower calcium hydroxide on aluminium substrate using polyacrylamide as a template. A series of electron microscopy images show new images of the products and together with themogravimetry differential thermal analysis and other conventional techniques, the composition of the products was found to be calcium hydroxide containing polyacrylamide. The result of the mechanism for the formation of the dendritic flower made of primary particles is also presented. An understanding of this mesoscale transformation process will be helpful in controlling the aggregation‐driven formation of complex higher‐order structures materials. This study could provide an additional tool for designing advanced materials and could be used for synthesis of more complex structures. (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
Impedance spectroscopy of Na and Nd doped strontium bismuth titanate
Authors: Rizwana R. , Radha Krishna T. , James A. R. , Sarah P. 
Published: June 2007

AbstractSr0.2Na0.4Nd0.4Bi4Ti4O15 is prepared by Sol‐Gel route using the modified polymeric precursor method based on the Pechini process and its electrical properties are investigated by Complex Impedance Spectroscopy (CIS). Results are presented in two ways, complex plane plots (real versus imaginary) and spectroscopic plots (real and imaginary against frequency). CIS has provided convincing evidence for the existence of both grain (bulk) and grain‐boundary effects that were separated in the frequency domain of the impedance spectrum. Experimental data are fitted to two parallel RC equivalent circuits in series. The values of resistance and capacitance of bulk and grain boundary contributions are also calculated. Relaxation times are calculated for both grains and grainboundaries. Conduction and charge carrier behaviors are studied from frequency and temperature dependence of ac conductivity. The ac conductivity follows a two‐power law behavior at different temperatures with frequency exponents s1 and s2. (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
Influence of doping on OH absorption in LiNbO3 crystals
Authors: Choubey R. K. , Khattak B. Q. , Kar S. , Ramshankar P. , Sen P. , Bartwal K. S. 
Published: June 2007

AbstractUndoped, Cr doped and Mg, Cr codoped LiNbO3 crystals were grown by conventional Czochralski technique. Comparative study was carried out using Fourier transform infrared (FTIR) and UV‐Visible spectroscopy. Infrared optical absorption for OH– ion has been used to study the effect of dopants on the crystals. The peak position of OH– shift to 3535 cm‐1 for Mg, Cr codoped crystals compared to 3484 cm‐1 for undoped and Cr doped crystals. Prominent absorption bands are found in the visible region centered at 480 nm (20833 cm‐1) and 653 nm (15313 cm‐1) in Cr doped crystals. Whereas in Mg, Cr codoped crystals these broad absorption bands are red shifted to 517 nm (19342 cm‐1) and 678 nm (14749 cm‐1). UV cutoff in Cr doped crystals shift towards higher wavelength compared to undoped LiNbO3 crystals. (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
Magnetic Microfields of Random Currents
Authors: Romanovsky M.Yu. , Ebeling W. 
Published: June 2007

AbstractThe distribution of magnetic microfields in systems with stochastic currents including plasmas, solids, and electrolytes is studied. It is shown that the random currents generate magnetic microfields distributed similar to the Holtsmark distribution for the electrical fields. Several relevant physical effects provided by this magnetic microfield and applications including plasma displays, microelectronic chips and currents in biological objects are discussed. (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
Interaction of Dense Nanoplasmas with Intense Laser Fields: Ionization Dynamics in Large Silver Clusters
Authors: Bornath Th. , Hilse P. , Schlanges M. 
Published: June 2007

AbstractThe interaction of intense laser fields with silver clusters is investigated theoretically using the nanoplasma model. Motivated by recent experiments with dual pulse excitation, special attention is directed on the ionization dynamics. The yield of highly charged ions is sensitive to the delay between the two pulses which is connected with resonance phenomena in the excitation. For a single cluster size, a rich structure in the yield as a function of the delay is found in the numerical results. This structure is smeared out, however, for cluster size distributions occuring in the experiments mentioned above. (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
Synthesis of Half‐Sandwich Tungsten Chlorogermyl and Chlorostannyl Complexes
Authors: Braunschweig Holger , Bera Holger , Geibel Barbara , Dörfler Rainer , Götz Daniel , Seeler Fabian , Kupfer Thomas , Radacki Krzysztof 
Published: June 2007

AbstractThe reaction of the dichlorogermane Me2GeCl2 and stannanes R2SnCl2 (R = Me, Bu) with the alkali tungsten salts M[(η5‐C5R′5)L(OC)2W] (L = CO, PPh3; M = Li, Na; R′ = H, Me) yields via alkali salt elimination a range of novel chlorostannyl‐ and chlorogermyl‐functionalized tungsten complexes of the general formula [(η5‐C5R′5)L(OC)2W(ER2Cl)] (R′ = H, Me; L = CO, PPh3; E = Ge, Sn; R = Me, Bu) (3a–e). The use of the phosphane‐substituted tungsten anion Na[(η5‐C5Me5)(Ph3P)(OC)2W] (1c) and Me2SnCl2 leads to a mixture consisting of the mono‐ (3e) as well as the di‐substituted stannyl compound [{(η5‐C5H5)(Ph3P)(OC)2W}2(SnMe2)] (4). Access to 3a is also given by reaction of ClMe2Sn–C5H5 (5) with [(MeCN)3W(CO)3] which includes chemoselective tin shift from the cyclopentadiene to the tungsten atom. In addition, a successive chlorination of [(η5‐C5H5)(OC)3W(SnMe3)] (6) via [(η5‐C5H5)(OC)3W(SnMe2Cl)] (3a) and [(η5‐C5H5)(OC)3W(SnMeCl2)] (7) to [(η5‐C5H5)(OC)3W(SnCl3)] (8) is presented. All new compounds have been fully characterized by elemental analyses and in solution by IR and multinuclear NMR spectroscopy. The crystal structures of complexes 3b–d and 8 were presented and discussed, showing bond lengths of 2.6272(4) Å for Ge–W, 2.7959(5) (3b), 2.7866(3) (3d) and 2.7244(3) (8) Å for the Sn–W bonds.(© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2007)
On the use of high‐order finite‐difference discretization for LES with double decomposition of the subgrid‐scale stresses
Authors: Meyers J. , Lacor C. , Baelmans M. 
Published: June 2007

AbstractLarge eddy simulation (LES) with additional filtering of the non‐linear term, also coined LES with double decomposition of the subgrid‐scale stress, is considered. In the literature, this approach is mainly encountered in combination with pseudo‐spectral discretization methods. In this case, the additional filter is a sharp cut‐off filter, which appears in the eventual computational algorithm as the 2/3‐dealiasing procedure. In the present paper, the LES approach with additional filtering of the non‐linear term is evaluated in a spatial, finite‐difference discretization approach. The sharp cut‐off filter used in pseudo‐spectral methods is then replaced by a ‘spectral‐like’ filter, which is formulated and discretized in physical space.
As suggested in the literature, the filter width Δ of this spectral‐like filter corresponds at least to 3/2 times the grid spacing h to avoid aliasing. Furthermore, spectral‐like discretization of the derivatives are constructed such that derivative‐discretization errors are low in the wavenumber range resolved by the filter, i.e. 0⩽kh⩽2π/3. The resulting method in combination with a Smagorinsky model is tested for decaying homogeneous isotropic turbulence and compared to standard lower‐order discretization methods. Further, an analysis is elaborated of the Galilean‐invariance problem, which arises when LES in double decomposition approach is combined with filters, which do not correspond to an orthogonal projection. The effects of a Galilean coordinate transformation on LES results, are identified in simulations, and we demonstrate that a Galilean transformation leads to wavenumber‐dependent shifts of the energy spectra. Copyright © 2007 John Wiley & Sons, Ltd.
Community social and place predictors of sense of community: A multilevel and longitudinal analysis
Authors: Long D. Adam , Perkins Douglas D. 
Published: June 2007

AbstractSense of community (SOC) is empirically “unpacked” as a multilevel construct with place and social elements. SOC has been studied primarily at the individual level despite researchers acknowledging its effects at the community level. Little attention has been given to the roles of place and place attitudes in SOC. We argue that place and social are inextricably bound, and studying the impact of the social alone on community‐oriented constructs like SOC constrains our ability to adequately understand such multilevel, multifaceted phenomena. The present, cross‐sectional and longitudinal analyses demonstrate that SOC is intimately related to social capital (neighboring, citizen participation, collective efficacy, informal social control), communitarianism, place attachment, community confidence, and community satisfaction. Implications for community and environmental psychology theory are discussed. © 2007 Wiley Periodicals, Inc. J Comm Psychol 35: 563–581, 2007.