bluuebunny/crossref_metadata_2025_split huggingface dataset:
Beating‐heart percutaneous mitral valve repair using a transcatheter endovascular suturing device in an animal model
Authors: Naqvi Tasneem Z. , Buchbinder Maurice , Zarbatany David , Logan Julie , Molloy Mia , Balke Glenn , Ainsworth Robert , Webb John G. , Alfieri Ottavio , Maisano Francesco 
Published: March 2009

AbstractBackground:The edge‐to‐edge (Alfieri) technique for mitral valve repair is a versatile method of treating mitral insufficiency. Because of its simplicity, it has been applied in minimally invasive surgery, and recently, in the design of endovascular closed‐heart devices.Aim:The purpose of this study was to evaluate the acute in‐vivo safety and feasibility of a novel percutaneous mitral valve repair system based on Alfieri technique in an animal model.Methods:Under general anesthesia, 11 pigs (90–100 kgs), underwent percutaneous Alfeiri procedure. The right femoral vein was punctured and the mitral valve was approached via a standard transeptal puncture. Combined intracardiac echo and fluoroscopic guidance was used. The procedure included: the positioning of a guide catheter for multiple access to the left atrium and for directing devices; the use of a therapy device to capture the free edge of the mitral valve leaflets using vacuum, and to deliver the suture to the valve and finally the fixation with a Nitinol suture clip, and trimming of the suture with a fastener catheter.Results:Leaflet capture, suture placement, and suture‐clip deployment was successful in all 11 animals. There were no acute cardiac or access site complications. Procedural time (from wire in left atrium to completion of the procedure was 18 ± 9 min (range 9–30 min). Blood loss was 67 ± 44 ml (range 0–125ml). A double orifice configuration was visible by echocardiography at the end of the procedure in all animals.Conclusion:This acute animal study demonstrated the feasibility of a beating heart percutaneous Alfieri procedure in a non‐diseased porcine valve using an endovascular suturing device to safely access the mitral valve, place a stitch through the mitral valve leaflets, and deploy a suture‐clip that reproduces the surgical technique. Clinical application of this device in humans needs to be evaluated. © 2007 Wiley‐Liss, Inc.
Polymerase‐Catalysed Incorporation of Glucose Nucleotides into a DNA Duplex
Authors: Renders Marleen , Abramov Mikhail , Froeyen Matheus , Herdewijn Piet 
Published: March 2009

AbstractActive but unselective: Nucleoside triphosphates possessing glucose moieties (such as those depicted) instead of the natural furanose rings are recognised by the active sites of polymerases. Polymerases therefore seem to be very unspecific in their recognition patterns.magnified imageThe enzymatic recognition of six‐membered ring nucleoside triphosphates—in particular the 6′‐triphosphates of (β‐D‐glucopyranosyl)thymine, (2′,3′‐dideoxy‐β‐D‐glucopyranosyl)thymine, (3′,4′‐dideoxy‐β‐D‐glucopyranosyl)thymine and (2′,3′‐dideoxy‐β‐D‐glucopyranosyl)adenine—was investigated. Despite the facts that the pyranose nucleic acids obtained by polymerisation of these monomers do not hybridise in solution with DNA and that the geometry of a DNA strand in a natural duplex differs from that of a pyranose nucleic acid, elongation of the DNA duplex with all four nucleotide analogues by Vent (exo−) polymerase was observed. Modelling experiments showed that hydrogen bonds are formed when 2′,3′‐dideoxy‐β‐homo‐T building blocks or β‐D‐gluco‐T building blocks are incorporated opposite adenosine residues in the template but not when they are incorporated opposite thymine residues in the template. The model shows a near perfect alignment of a secondary hydroxy group at the end of the primer and the α‐phosphate group of the incoming triphosphate. The results of these experiments provide new information on the role of the active site of the enzyme in the polymerisation reaction.
Enhancement of H2 Adsorption in Coordination Framework Materials by Use of Ligand Curvature
Authors: Yang Sihai , Lin Xiang , Dailly Anne , Blake Alexander J. , Hubberstey Peter , Champness Neil R. , Schröder Martin 
Published: March 2009

AbstractCurvy ligands for H2 storage? Enhancement of H2 adsorption has been observed in coordination framework materials, an example of which is depicted, by the introduction of phenanthrene and 9,10‐dihydrophenanthrene groups into porous CuII–carboxylate framework materials of NbO topology.magnified imageSolvothermal reaction of the ligands H4L110 ((2,7‐phenanthrenediyl)diisophthalic acid) and H4L111 ([2,7‐(9,10‐dihydrophenanthrenediyl)]diisophthalic acid) with Cu(NO3)2⋅2.5 H2O in a slightly acidified mixture of DMF/1,4‐dioxane/H2O afforded the solvated framework compounds [Cu2(L110)(H2O)2](DMF)7.5(H2O)5 (NOTT‐110) and [Cu2(L111)(H2O)2](DMF)7.5(H2O)5 (NOTT‐111), respectively. Crystal structure determinations confirmed that NOTT‐110 and NOTT‐111 have the same NbO framework structure, differing only at the 9 and 10 positions of the phenanthrene group. The BET surface areas for desolvated NOTT‐110 and NOTT‐111 were estimated to be 2960 and 2930 m2 g−1, respectively. Compared with their phenyl analogues, introduction of phenanthrene groups to these porous CuII–carboxylate framework materials leads to an enhancement of H2 adsorption. Thus, the H2 isotherms for desolvated NOTT‐110 and NOTT‐111 confirm 2.64 and 2.56 wt % total H2 uptake, respectively, at 1 bar and 78 K. NOTT‐110 shows a high total H2 storage capacity of 7.62 wt % at 55 bar and 77 K (8.5 wt % at saturation) with a total volumetric capacity of 46.8 g L−1 at 55 bar and 77 K.
Radical Polymerization of Vinyl Acetate with Bis(tetramethylheptadionato)cobalt(II): Coexistence of Three Different Mechanisms
Authors: Kumar K. S. Santhosh , Gnanou Yves , Champouret Yohan , Daran Jean‐Claude , Poli Rinaldo 
Published: March 2009

AbstractPoly(vinyl acetate) by OMRP: Increasing the steric encumbrance of the β‐diketonate R substituents in vinyl acetate (VAc) polymerization mediator [Co{OC(R)CHC(R)O}2] from Me to tBu sufficiently weakens the CoIIIPVAc bond of the polymer chain to allow it to operate by both associative (degenerative transfer) and dissociative (organometallic radical polymerization, OMRP) mechanisms (see scheme). The CoIIIPVAc species also acts as a transfer agent in the absence of Lewis bases, whereas the CoII complex shows catalytic chain transfer (CCT) activity.magnified imageThe complex [CoII(tmhd)2] (4; tmhd=2,2,6,6‐tetramethylhepta‐3,5‐dionato) has been investigated as a mediator for controlled radical polymerization of vinyl acetate (VAc) and compared with the analogue [CoII(acac)2] (1; acac=acetylacetonato). A relatively well controlled process occurs, after an induction time, with 2,2′‐azobis(4‐methoxyl‐2,4‐dimethylvaleronitrile) (V‐70) as radical initiator at 30 °C. However, whereas the polymerization essentially stops after about six initiator half‐lives in the presence of 1, it continues with a first‐order rate law in the presence of 4. The successful simulation of the kinetic data shows that 4 operates simultaneously by associative (degenerative transfer, DT) and dissociative (organometallic radical polymerization, OMRP) mechanisms. The occurrence of OMRP was confirmed by an independent polymerization experiment starting from an isolated and purified [Co(tmhd)2](PVAc) macroinitiator. The polymer molecular weight evolves linearly with conversion in accordance with the expected values for one chain per Co atom when DT is the predominant mechanism and also during the pure OMRP process; however, observation of stagnating molecular weights at long reaction times with concomitant breakdown of the first‐order rate law for monomer consumption indicates a competitive chain‐transfer process catalyzed by an increasing amount of CoII. In the presence of external donors L (water, pyridine, triethylamine) the DT pathway is blocked and the OMRP pathway is accelerated, and polymerization with complex 4 is then about five times slower than with complex 1. The reversal of relative effective OMRP rate constants keff (4>1 in the absence of external donors, 4<1 in their presence) is rationalized through competitive steric effects on CoIIIC and CoIIL bond strengths. These propositions are supported by 1H NMR studies and by DFT calculations.
Detection of Mismatched Duplexes by Synchronizing the Pulse Potential Frequency with the Dynamics of Ferrocene/Isoquinoline Conjugate‐Connected DNA Probes Immobilized onto Electrodes
Authors: Ikeda Reona , Kobayashi Sakie , Chiba Junya , Inouye Masahiko 
Published: March 2009

AbstractGot a match? A novel electrochemical single‐nucleotide polymorphism (SNP) detection system has been developed by synchronizing the pulse potential frequency in square‐wave voltammetry with the dynamics of DNA duplexes consisting of ferrocene/isoquinoline conjugate‐connected DNA probes (see picture).magnified imageCyclic voltammetry was performed at various scan rates for the duplexes from ferrocene/isoquinoline conjugate‐connected DNA probes on gold electrodes. The relationship between the observed currents and the scan rates disclosed the enhanced bending elasticity of the mismatched duplexes compared with the fully matched duplexes. The difference of the dynamics was easily detected through the currents from the conjugate by adjusting the pulse potential frequency in square‐wave voltammetry. By using the present strategy, we succeeded in accurately detecting various naturally occurring single‐nucleotide polymorphisms.
Direct Catalytic Asymmetric Synthesis of Highly Functionalized 2‐Methylchroman‐2,4‐diols via Barbas–List Aldol Reaction
Authors: Ramachary Dhevalapally B. , Sakthidevi Rajasekar 
Published: March 2009

AbstractA practical and sustainable chemical process for the synthesis of highly substituted aldol↔lactol products was achieved for the first time through the asymmetric Barbas–List aldol (BLA) reaction of 2‐hydroxybenzaldehydes with acetone in the presence of a catalytic amount of trans‐4‐OH‐L‐proline (see scheme).magnified image
A Waterwheel‐Shaped meso–meso‐Linked Porphyrin Pentamer
Authors: Wu Chieh‐Ao , Chiu Chien‐Lan , Mai Chi‐Lun , Lin You‐Shiang , Yeh Chen‐Yu 
Published: March 2009

AbstractWheels on water? A waterwheel‐shaped porphyrin pentamer has been synthesized by palladium‐catalyzed cross‐coupling reactions. The key intermediate is a boronate porphyrin, in which four boronic ester groups are directly attached to the meso‐positions.magnified image
ChemInform Abstract: Structural Study of the Semimagnetic Semiconductor Zn0.5Mn0.5In2Te4.
Authors: Delgado G. E. , Sagredo V. 
Published: March 2009

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Synthesis and Crystal Structure of PdSnTe.
Authors: Laufek F. , Vymazalova A. , Navratil J. , Drabek M. , Plasil J. , Plechacek T. 
Published: March 2009

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Preparation and Properties of Metallic, Superhard Rhenium Diboride Crystals.
Authors: Levine Jonathan B. , Nguyen Sandy L. , Rasool Haider I. , Wright Jeffrey A. , Brown Stuart E. , Kaner Richard B. 
Published: March 2009

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Ruthenium(IV) Pyrochlore Oxides: Realization of Novel Electronic Properties Through Substitution at A‐ and B‐Sites.
Authors: Mani Rohini , Fischer Michael , Joy Joby E. , Gopalakrishnan J. , Jansen Martin 
Published: March 2009

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Synthesis, Crystal Structures and High‐Temperature Thermoelectric Properties of Spinel‐Type Cobalt Ruthenium Oxides.
Authors: Kawano Tetsuya , Takahashi Junichi , Okutani Takeshi , Yamada Takahiro , Yamane Hisanori 
Published: March 2009

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: First‐Principles Investigation on Extraction of Lithium Ion from Monoclinic LiMnO2.
Authors: Huang Zu‐Fei , Zhang Han‐Zhuang , Wang Chun‐Zhong , Wang Deng‐Pan , Meng Xing , Ming Xing , Chen Gang 
Published: March 2009

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Template‐Free Synthesis of Li[Ni0.25Li0.15Mn0.6]O2 Nanowires for High Performance Lithium Battery Cathode.
Authors: Kim Min Gyu , Jo Minki , Hong Young‐Sik , Cho Jaephil 
Published: March 2009

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Preparation and Photocatalytic Activity of Visible Light‐Active Sulfur and Nitrogen Co‐Doped SrTiO3.
Authors: Wang Jinshu , Li Hui , Li Hongli , Yin Shu , Sato Tsugio 
Published: March 2009

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Photocatalytic Decolorization of Methylene Blue over Monoclinic Pyrochlore‐Type Pb2Nb2O7 under Visible Light Irradiation.
Authors: Xiao Qi , Zhou Qitao , Zhang Jiang , Ouyang Linli 
Published: March 2009

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Ammonia Triborane: A New Synthesis, Structural Determinations, and Hydrolytic Hydrogen‐Release Properties.
Authors: Yoon Chang Won , Carroll Patrick J. , Sneddon Larry G. 
Published: March 2009

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Synthesis and Characterization of Neodymium Oxyhydroxide Crystals.
Authors: Samata H. , Kimura D. , Mizusaki S. , Nagata Y. , Ozawa T. C. , Sato A. 
Published: March 2009

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Preparation of Cr2O3 Nanoparticles via C2H5OH Hydrothermal Reduction.
Authors: Pei Zhenzhao , Xu Hongbin , Zhang Yi 
Published: March 2009

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: A Simple Thermal Decomposition—Nitridation Route to Nanocrystalline Chromium Nitride (CrN) by the Reaction of Ammonium Dichromate and Mg Powders.
Authors: Ma Jianhua , Du Yihong 
Published: March 2009

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Synthesis and Substitution Reactions of β‐Alkoxyvinyl Bromodifluoromethyl Ketones.
Authors: Fang Xiang , Chen Yang , He Daming , Yang Xianjin , Wu Fanhong 
Published: March 2009

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: anti and syn Glycolate Aldol Reactions with a Readily Displaced Thiol Auxilliary.
Authors: Fanjul Sandra , Hulme Alison N. 
Published: March 2009

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: A Palladium‐Catalyzed Approach to Polycyclic Sulfur Heterocycles.
Authors: Martins Andrew , Lautens Mark 
Published: March 2009

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Highly Chemoselective Reductive Amination of Carbonyl Compounds Promoted by InCl3/Et3SiH/MeOH System.
Authors: Lee On‐Yi , Law Ka‐Lun , Ho Chun‐Yu , Yang Dan 
Published: March 2009

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Preparation of Optically Active 1‐O‐Alkyl‐3‐O‐arylsulfonyl‐sn‐glycerol Derivatives: Substrate Engineering in Enzyme‐Mediated Enantioselective Hydrolysis.
Authors: Shimada Yasutaka , Sato Hiroshi , Mochizuki Sachiyo , Matsumoto Kazutsugu 
Published: March 2009

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Synthesis of 1‐Hydroperoxy‐1′‐alkoxyperoxides by the Iodine‐Catalyzed Reactions of Geminal Bishydroperoxides with Acetals or Enol Ethers.
Authors: Terent'ev Alexander O. , Platonov Maxim M. , Krylov Igor B. , Chernyshev Vladimir C. , Nikishin Gennady I. 
Published: March 2009

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Manganese‐Catalyzed Cross‐Coupling Reaction Between Aryl Grignard Reagents and Alkenyl Halides.
Authors: Cahiez Gerard , Gager Olivier , Lecomte Fabien 
Published: March 2009

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Highly Selective α‐Acylvinyl Anion Additions to Imines.
Authors: Reynolds Troy E. , Binkley Michael S. , Scheidt Karl A. 
Published: March 2009

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Diastereoselective Electrophilic α‐Amination of Camphor N1‐Acyl N2‐Phenylpyrazolidinones: The Metal Enolate‐Dependent Synthesis of Two Possible Hydrazide Diastereomers.
Authors: Chao Chin‐Sheng , Cheng Chung‐Kai , Li Ssu‐Hsien , Chen Kwunmin 
Published: March 2009

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Chlorodimethylsulfonium Chloride Mediated Formation of Phenyl‐α‐chloroazoalkanes.
Authors: Wyman Jodi M. , Jochum Stephanie , Brewer Matthias 
Published: March 2009

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: N‐Tosyl‐(Sa)‐binam‐L‐prolinamide as Highly Efficient Bifunctional Organocatalyst for the General Enantioselective Solvent‐Free Aldol Reaction.
Authors: Guillena Gabriela , Najera Carmen , Viozquez Santiago F. 
Published: March 2009

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Nucleophilic Carbene Catalyzed Synthesis of 1,2 Amino Alcohols via Azidation of Epoxy Aldehydes.
Authors: Vora Harit U. , Moncecchi Johannah R. , Epstein Oleg , Rovis Tomislav 
Published: March 2009

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.