bluuebunny/crossref_metadata_2025_split huggingface dataset:
Physical and mechanical properties of poly(L‐lactic acid) nucleated by dibenzoylhydrazide compound
Authors: Kawamoto Naoshi , Sakai Atsushi , Horikoshi Takahiro , Urushihara Tsuyoshi , Tobita Etsuo 
Published: October 2006

AbstractBenzoylhydrazide compounds were evaluated as a nucleating agent for poly(L‐lactic acid) (PLA). From the results of the differential scanning calorimetry, octamethylenedicarboxylic dibenzoylhydrazide (OMBH) was found to be most effective for acceleration of PLA crystallization under higher cooling rate of −50°C min−1. PLA with OMBH of 1 wt % exhibited very short crystallization half‐time with wide range of isothermal temperature from 90 to 130°C. The molding cycle time of PLA with OMBH in injection molding was less than 3 min, and the cooling time was one‐third of ethylenebis(12‐hydroxystearylamide)/talc system as a nucleating agent. Physical and mechanical properties improved extremely, and the heat distortion temperature of 124°C, flexural modulus of 4.1 GPa, and Izod impact strength of 7.9 kJ m−2 were achieved. This indicates that the utilization of OMBH makes it possible to extend the application range of PLA as automotive parts and electric appliances, which require higher heat resistance and stiffness. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 103: 244–250, 2007
Characteristic modeling of the wear particle formation process from a tribological testing of polyethylene with controlled surface asperities
Authors: Fang Hsu‐Wei 
Published: October 2006

AbstractTo study the ultra‐high molecular weight polyethylene (UHMWPE) wear particles‐induced osteolysis which leads to the failure of artificial joints, microfabricated surfaces with controlled asperities have been applied to generate narrowly distributed UHMWPE wear particles with various sizes and shapes. Our previous study further facilitated single wedge sliding tests to investigate the mechanism of the UHMWPE particle generation. In this study, the attempt was made to characterize the particle generation process into a mathematical model to predict particle volume with a given surface‐texture dimensions and mechanical loading conditions. The particle‐generation process is decomposed into two steps: (1) penetration of the cutting edge, and (2) lateral sliding of the cutting edge. By combining the indentation experimental data, the viscoelastic responses of UHMWPE was incorporated in the model. The effects of normal load, feature height, and cutting edge angle on the wear particle volume were illustrated from model predictions. Both experimental results and model predictions indicate the same trend of effects of surface‐texture geometry and mechanical conditions on the volume of particles. The results of the model predictions are close to the experimental results of the particle generation. However, the particle volume predicted by the model is larger than the experimental results. It is believed that the reprocessing of the generated particles and viscoelastic recovery of UHMWPE in the experiments account for this difference. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 103: 587–594, 2007
The Reactive Intermediate of Catalytic Borohydride Reduction by Schiff Base–Cobalt Complexes
Authors: Iwakura Izumi , Hatanaka Miho , Kokura Ai , Teraoka Haruna , Ikeno Taketo , Nagata Takushi , Yamada Tohru 
Published: October 2006

AbstractThe key reactive intermediate of borohydride reduction catalyzed by Schiff base–cobalt complexes is proposed to be the dichloromethylcobalt hydride with a sodium cation, based on experimental and theoretical studies. It was revealed that chloroform is not the solvent but the reactant that activates the cobalt catalyst. The substrate carbonyl compounds are fixed and activated by the alkali cation, which is captured by the oxygen atoms of the planar ligand and the chlorine atom of the axial ligand, and attacked by the hydride on the cobalt atom via a six‐membered‐like transition state to afford the corresponding alcohol.
Stereoselective pharmacokinetic analysis of tramadol and its main phase I metabolites in healthy subjects after intravenous and oral administration of racemic tramadol
Authors: Quetglas Emilio García , Azanza Jose Ramón , Cardenas Ernesto , Sádaba Belén , Campanero Miguel Angel 
Published: October 2006

AbstractThe kinetics of tramadol enantiomers are stereoselective when doses of the racemic drug are given orally. To document whether the route of administration determines thestereoselectivekinetics of tramadol enantiomers, healthy volunteers received 100 mg oral or intravenous doses of racemic tramadol, and serial blood samples were obtained to assay tramadol enantiomers and their main phase I metabolites,O‐demethyltramadol andN‐demethyltramadol. To assess accurately the involvement of their metabolites in the pharmacokinetics of tramadol, it is essential to determine the rate and extent of the formation of the enantiomers of these metabolites. A simultaneous pharmacokinetic model describing the plasma concentration‐curves of the generated metabolites and the parent compounds after intravenous and oral drug administration is developed and presented. Tramadol andO‐demethyltramadol were the major compounds detected in plasma after intravenous administration. Nevertheless, theN‐demethylation of tramadol showed a significant increase when the oral route was used. After both oral and intravenous doses, the kinetics of the tramadol enantiomers were stereoselective. TheAUCfor (R)‐(+)‐tramadol was greater than theAUCfor (S)‐(−)‐tramadol. The formation ofN‐demethyltramadol also was enantioselective after oral administration of racemic tramadol, with a greaterAUCfor (R)‐(+)‐N‐demethyltramadol than for (S)‐(−)‐N‐demethyltramadol. In the opposite form, (S)‐(−)‐O‐demethyltramadol was formed faster than (R)‐(+)‐O‐demethyltramadol. The metabolism of tramadol was also route‐dependent with a different enantiomeric ratio for tramadol and its main phase I metabolites after intravenous and oral administration. The disposition ofN‐demethyltramadol was concentration‐dependent. Copyright © 2006 John Wiley & Sons, Ltd.
Metal ions‐ and pH‐induced conformational changes of acutolysin A from Agkistrodon acutus venom probed by fluorescent spectroscopy
Authors: Xu Xiaolong , Chen Jiexia , Zhang Liyun , Liu Qingliang 
Published: October 2006

AbstractAcutolysin A isolated from the venom of Agkistrodon acutus is a protein of 22 kDa with marked haemorrhagic and proteolytic activities. The metal ions‐ and pH‐induced conformational changes of acutolysin A have been studied by following fluorescence and activity measurements. Here, we provide evidence for the fact that native holo‐acutolysin A adopts two subtly different conformations, native state a (Na) stable in the weak acidic pH range from 6.0 to 7.0 with low activity and native state b (Nb) stable in the weak alkaline pH range from 7.5 to 9.0 with high activity. Holo‐acutolysin A has an optimum pH of 8.5 for caseinolytic activity, and the protein adopts the most stable conformation with the maximum fluorescence at pH 8.5. The Ca2+ and Zn2+ ions have significant effects on both the pH‐induced denaturing transition curve and the pH‐dependent activity curve. Addition of 1 mM Ca2+ to holo‐acutolysin A shifts both the acid‐induced denaturing transition curve and the end zone of acid‐induced inactivation curve towards lower pH value, and shifts both the alkali‐induced denaturing transition curve and the end zone of alkali‐induced inactivation curve towards higher pH value. Addition of 1 mM Zn2+ also shifts both the alkali‐induced denaturing transition curve and the end zone of alkali‐induced inactivation curve towards higher pH value and shifts the acid‐induced denaturing transition curve to lower pH value, but has little effect on the acid‐induced inactivation. Removal of Ca2+ and Zn2+ from the protein enhances its sensitivity to pH and significantly reduces its overall stability during acid‐induced denaturation. It is also evident from the present work that the free Zn2+‐induced inactivation in the pH range from 8.0 to 9.0 should be attributed to the effect of Zn(OH)2 precipitation on the protein. © 2006 Wiley Periodicals, Inc. Biopolymers 85: 81–90, 2007.This article was originally published online as an accepted preprint. The “Published Online” date corresponds to the preprint version. You can request a copy of the preprint by emailing the Biopolymers editorial office at biopolymers@wiley.com
Lone‐Pair Interfaces that Divide Inorganic Materials into Ionic and Covalent Parts.
Authors: Mayerova Zuzana , Johnsson Mats , Lidin Sven 
Published: October 2006

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.
Peculiarities in the Raman Spectra of ZrB12 and LuB12 Single Crystals.
Authors: Werheit H. , Paderno Yu. , Filippov V. , Paderno V. , Pietraszko A. , Armbruester M. , Schwarz U. 
Published: October 2006

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.
Ho11ClTe16O48: An Extremly Chlorine‐Poor Chloride Oxotellurate(IV) of Trivalent Holmium.
Authors: Meier Steffen F. , Schleid Thomas 
Published: October 2006

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.
The New Silver Thiostannate (1,4‐dabH2)Ag2SnS4: Solvothermal Synthesis, Crystal Structure and Spectroscopic Properties.
Authors: Pienack Nicole , Bensch Wolfgang 
Published: October 2006

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.
Copper‐Catalyzed Asymmetric Conjugate Addition of Grignard Reagents to Trisubstituted Enones. Construction of All‐Carbon Quaternary Chiral Centers.
Authors: Martin David , Kehrli Stefan , d'Augustin Magali , Clavier Herve , Mauduit Marc , Alexakis Alexandre 
Published: October 2006

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.
Asymmetric Aldol Reactions Catalyzed by Tryptophan in Water.
Authors: Jiang Zhaoqin , Liang Zhian , Wu Xiaoyu , Lu Yixin 
Published: October 2006

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.
High Chelation Control of Three Contiguous Stereogenic Centers in the Reformatsky Reactions of Indium Enolates with α‐Hydroxy Ketones: Unexpected Stereochemistry of Lactone Formation.
Authors: Babu Srinivasarao Arulananda , Yasuda Makoto , Okabe Yuji , Shibata Ikuya , Baba Akio 
Published: October 2006

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.
Asymmetric Cobalt‐Catalyzed Diels—Alder Reactions of a Boron‐Functionalized 1,3‐Diene with Alkynes and Allylboration with Aldehydes.
Authors: Hilt Gerhard , Hess Wilfried , Harms Klaus 
Published: October 2006

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.
Nickel‐Mediated Cyclization of Enynes under an Atmosphere of Carbon Dioxide.
Authors: Takimoto Masanori , Mizuno Takashi , Mori Miwako , Sato Yoshihiro 
Published: October 2006

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.
Formation of 1,2,5‐Oxadiazole, Isoxazole, Isothiazole, 1,2,3‐Triazole, and Pyrrole Rings from N‐(5,5‐Dimethyl‐3‐oxocyclohexenyl)‐S,S‐diphenylsulfilimine (III).
Authors: Takahashi Masahiko , Onda Shinji , Matsumoto Nobuaki 
Published: October 2006

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.
Highly Efficient Meinwald Rearrangement Reactions of Epoxides Catalyzed by Copper Tetrafluoroborate.
Authors: Robinson Mathew W. C. , Pillinger Kathryn S. , Graham Andrew E. 
Published: October 2006

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 Novel Reduction Reaction for the Conversion of Aldehydes, Ketones and Primary, Secondary and Tertiary Alcohols into Their Corresponding Alkanes.
Authors: Nimmagadda Rama D. , McRae Christopher 
Published: October 2006

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.
Highly Efficient 1,4‐Additions of Electron‐Deficient Aryl Boronic Acids with a Novel Rhodium(I) Quinonoid Catalyst.
Authors: Trenkle William C. , Barkin Julia L. , Son Seung Uk , Sweigart Dwight A. 
Published: October 2006

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.
Fluorous Phase‐Transfer Activation of Catalysts: Application of a New Rate‐Enhancement Strategy to Alkene Metathesis.
Authors: Correa da Costa Rosenildo , Gladysz J. A. 
Published: October 2006

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 Mild and Efficient Reaction for Conversion of Carboxylic Acids into Acid Bromides with Ethyl Tribromoacetate/Triphenylphosphine under Acid‐Free Conditions.
Authors: Kang Dong Ho , Joo Tae Young , Lee Eun Hwa , Chaysripongkul Skaydaw , Chavasiri Warinthorn , Jang Doo Ok 
Published: October 2006

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 Efficient Method for the Synthesis of Acylals from Aldehydes Using Silica‐Supported Perchloric Acid (HClO4—SiO2).
Authors: Kamble Vinod T. , Jamode Vasant S. , Joshi Neeta S. , Biradar Ankush V. , Deshmukh Rameshchandra Y. 
Published: October 2006

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.
Silica Sulfate, an Efficient Catalyst for the Trimethylsilylation of Alcohols.
Authors: Jin Tong‐Shou , Tian Ruo‐Fei , Liu Li‐Bin , Zhao Ying , Li Tong‐Shuang 
Published: October 2006

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.
Deacetylation of Thioacetate Using Acetyl Chloride in Methanol.
Authors: Tewari Neera , Nizar Hashim , Mane Avinash , George Vinod , Prasad Mohan 
Published: October 2006

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.
Acetic Acid‐Assisted Copper Methanesulfonate Catalyst for Chemoselective Conversion of Aldehydes to Acylals.
Authors: Wang Min , Gong Hong , Jiang Heng , Wang Zhichang 
Published: October 2006

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.
Toward a Protecting‐Group‐Free Halogen—Metal Exchange Reaction: Practical, Chemoselective Metalation of Functionalized Aromatic Halides Using Dianion‐Type Zincate, tBu4ZnLi2.
Authors: Uchiyama Masanobu , Furuyama Taniyuki , Kobayashi Minoru , Matsumoto Yotaro , Tanaka Kentaro 
Published: October 2006

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.
Directing Effects of Tethered Alkenes in Nickel‐Catalyzed Coupling Reactions of 1,6‐Enynes and Aldehydes.
Authors: Moslin Ryan M. , Miller Karen M. , Jamison Timothy F. 
Published: October 2006

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.
Cyclic Vinylogous Triflate Hemiacetals as New Surrogates for Alkynyl Aldehydes.
Authors: Kamijo Shin , Dudley Gregory B. 
Published: October 2006

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.
Highly Selective Catalytic Cross‐Aldol Reactions of Chloral with Aliphatic Aldehydes.
Authors: Zhang Fanglin , Su Ning , Gong Yuefa 
Published: October 2006

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.
Novel Metal‐Free Hydrogenation of the Carbon—Carbon Double Bond in Azulenoid Enones by Use of Cycloheptatriene and Protic Acid.
Authors: Kimura Takatomo , Takahashi Tohru , Nishiura Mitsuko , Yamamura Kimiaki 
Published: October 2006

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.
Lactonization of Epoxyendic Anhydride in Reactions with Amines.
Authors: Kas'yan L. I. , Krishchik O. V. , Tarabara I. N. , Kas'yan A. O. , Pal'chikov V. A. 
Published: October 2006

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.
Carbonyl Propargylation and Allenylation with 2‐Propynyl Mesylates, Tin(IV) Iodide, and Tetrabutylammonium Iodide Controlled by Either a Steric Effect or Coordination Effect.
Authors: Masuyama Yoshiro , Yamazuki Ryouichi , Ohtsuka Masaru , Kurusu Yasuhiko 
Published: October 2006

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.
One‐Step Synthesis of Aromatic Terminal Alkynes from Their Corresponding Ketones under Microwave Irradiation.
Authors: Ghaffarzadeh Mohammad , Bolourtchian Mohammad , Fard Zohreh Hassanzadeh , Halvagar Mohammad Reza , Mohsenzadeh Farshid 
Published: October 2006

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.
Grindstone Chemistry: (Diacetoxyiodo)benzene‐Mediated Oxidative Nuclear Halogenation of Arenes Using NaCl, NaBr or I2.
Authors: Karade N. N. , Tiwari G. B. , Huple D. B. , Siddiqui T. A. J. 
Published: October 2006

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 a New 1,4‐Amino Alcohol and Its Use as Catalyst in the Enantioselective Addition of Organozinc to Aldehydes.
Authors: Scarpi Dina , Lo Galbo Fabrizio , Guarna Antonio 
Published: October 2006

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.
Enantioselective Hydrogenation of Aromatic Ketones Catalyzed by Ru Complexes of Goodwin—Lions‐Type sp2N/sp3N Hybrid Ligands R‐BINAN‐R′‐Py.
Authors: Huang Hanmin , Okuno Tomoko , Tsuda Kazuomi , Yoshimura Masahiro , Kitamura Masato 
Published: October 2006

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.
Applications of Asymmetric Hydrosilylations Mediated by Catalytic (DTBM‐SEGPHOS)CuH.
Authors: Lipshutz Bruce H. , Lower Asher , Kucejko Robert J. , Noson Kevin 
Published: October 2006

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.
Enantioselective Dialkylzinc Addition to Aldehydes Catalyzed by Chiral Zn(II)‐BINOLates Bearing Phosphonates and Phosphoramides in the 3,3′‐Positions.
Authors: Hatano Manabu , Miyamoto Takashi , Ishihara Kazuaki 
Published: October 2006

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 Mild and Convenient Synthesis of N‐Carbobenzyloxy Ketimines
Authors: Matsuo Jun‐ichi , Tanaki Yumi , Kido Aimi , Ishibashi Hiroyuki 
Published: October 2006

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.
CuI/L‐Proline Potassium Salt Catalyzed Synthesis of Vinyl Sulfones via Coupling Reaction of Vinyl Bromides with Sulfinic Acid Salts in Ionic Liquid.
Authors: Bao Weiliang , Wang Congna 
Published: October 2006

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 Efficient Negishi Cross‐Coupling Reaction Catalyzed by Nickel(II) and Diethyl Phosphite.
Authors: Gavryushin Andrei , Kofink Christiane , Manolikakes Georg , Knochel Paul 
Published: October 2006

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 and Liquid—Crystalline Properties of Bromoalkyloxy‐Substituted Terphenylenes.
Authors: Larios‐Lopez Leticia , Navarro‐Rodriguez Damaso , Donnio Bertrand , Guillon Daniel 
Published: October 2006

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.
Oxidation of α‐Hydroxy Ketones to Diketones by Iodic Acid Supported on Alumina.
Authors: Hashemi Mohammed M. , Naeimi Hossein , Shirazizadeh Farveh , Karimi‐Jaberi Zahed 
Published: October 2006

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.