bluuebunny/crossref_metadata_2025_split huggingface dataset:
Intragraft pressures predict outcomes in hemodialysis patients with graft outflow lesions undergoing percutaneous transluminal angioplasty
Authors: Lai Chi‐Cheng , Chung Hsiao‐Min , Tsai Han‐Lin , Mar Guang‐Yuan , Tseng Ching‐Jiunn , Liu Chun‐Peng 
Published: June 2010

AbstractObjectives: This study is to introduce intragraft pressure (IGP) as intraprocedural parameter for outcome survey in hemodialysis patients with graft outflow lesions undergoing percutaneous transluminal angioplasty (PTA). Background: The role of IGP on procedural endpoint and patency is unknown. Methods: Seventy‐five participants with graft outflow lesions receiving PTA were enrolled. Procedural data regarding IGP and angiographic findings were collected and the 1‐year graft patency through collaboration with hemodialysis units. Analyses and comparisons among IGP, angiographic findings, and patency were conducted. Using the receiver operating characteristic (ROC) curve and Kaplan–Meier survival analysis, we intended to detect significance and the cut‐off points of IGP for patency prediction, and difference in patency between the two groups divided by using the cut‐off points. Results: Pre‐PTA and post‐PTA IGP were significantly associated with 1‐year patency (both significance <0.01) with 0.756 and 0.791 areas under the ROC curves, respectively. The cut‐off points of pre‐PTA and post‐PTA IGP were closer to 106 and 47 mm Hg for prediction of 1‐year patency (sensitivity = 0.76, specificity = 0.69; sensitivity = 0.79, specificity = 0.69, respectively; 95% CI). Significant reductions in 1‐year patency were shown in the subjects with greater than the cut‐off values, either pre‐PTA or post‐PTA IGP, compared with those with smaller than these values (both log rank test < 0.001). Conclusion: IGP might be useful to evaluate procedural endpoints and predict patency outcomes in hemodialysis patients with graft outflow lesions undergoing PTA. Patients with the greater pre‐PTA or post‐PTA IGP, to some level, seem to have the shorter patency. © 2010 Wiley‐Liss, Inc.
Use of the Stingray® guidewire and the Venture® catheter for crossing flush coronary chronic total occlusions due to in‐stent restenosis
Authors: Brilakis Emmanouil S. , Lombardi William B. , Banerjee Subhash 
Published: June 2010

AbstractWe report two cases of flush chronic total occlusion due to in‐stent restenosis, in which percutaneous coronary intervention attempts via over‐the‐wire balloons and microcatheters failed to cross the lesion. Using the Venture® catheter for support and the Stingray® guidewire for enhanced penetration capacity, both lesions were successfully crossed and stented. © 2010 Wiley‐Liss, Inc.
Computer‐assisted quantification of myocardial reperfusion after primary percutaneous coronary intervention predicts functional and contrast‐enhanced cardiovascular magnetic resonance outcomes in patients with ST‐segment elevation myocardial infarction
Authors: Gu Youlan L. , Haeck Joost D.E. , Vogelzang Mathijs , Bilodeau Luc , Krucoff Mitchell W. , Tijssen Jan G.P. , de Winter Robbert J. , Zijlstra Felix , Koch Karel T. 
Published: June 2010

AbstractObjective. We investigated whether the Quantitative Blush Evaluator (QuBE) value predicts functional and contrast‐enhanced cardiovascular magnetic resonance (CMR) outcomes at 4–6 months after primary percutaneous coronary intervention (PCI) in patients with ST‐segment elevation myocardial infarction (STEMI). Background. QuBE is a computer‐assisted open source program to quantify myocardial reperfusion. Although a higher QuBE value is associated with improved myocardial reperfusion measures and lower 1‐year mortality, the association with intermediate functional parameters after STEMI has not yet been investigated. Methods. QuBE values were quantified retrospectively on angiograms of patients enrolled in the ancillary CMR study of the proximal embolic protection in acute myocardial infarction and resolution of ST‐elevation trial. QuBE en CMR outcomes were independently assessed by reviewers blinded to clinical data. Results. A higher QuBE value was significantly associated with a smaller left ventricular (LV) end‐diastolic and end‐systolic volume, a higher LV ejection fraction and systolic wall thickening in the infarct area, and a smaller final infarct size and extent of transmural segments (P ≤ 0.008). In a multivariable model, including age, gender, infarct location, time to treatment, history of myocardial infarction, and postprocedural thrombolysis in myocardial infarction flow grade, only the QuBE value and infarct location remained as independent predictors of LV ejection fraction (P = 0.018 for QuBE value). Conclusion. Higher QuBE values are independently associated with improved functional and contrast‐enhanced CMR outcomes including LV ejection fraction at 4–6 months after primary PCI and may therefore aid in identifying high‐risk patients who benefit most from adjunctive therapies sustaining myocardial function after PCI. © 2010 Wiley‐Liss, Inc.
Low‐Temperature De‐NOx by Selective Catalytic Reduction Based on Iron‐Based Catalysts
Authors: Yao G.‐H. , Gui K.‐T. , Wang F. 
Published: June 2010

AbstractLow‐temperature De‐NOx technology is a new topic in the area of flue gas treatment. This paper presents experimental studies on selective catalytic reduction (SCR) of NOx from synthetic flue gas over iron‐based catalysts with ammonia in a fluidized reactor. The iron‐based catalysts used in the experiments are particles of Fe3O4 and γ‐Fe2O3, and they are analyzed by X‐ray diffraction (XRD) and Mössbauer spectroscopy, before and after reaction. It is observed that the efficiency of De‐NOx with γ‐Fe2O3 catalyst is high at temperatures from 200–290 °C and the maximum efficiency is seen to exceed 90 % at 250 °C. The effects of magnetic fields on SCR De‐NOx using γ‐Fe2O3 particles as catalysts are also studied by applying uniform and coaxial magnetic fields to the fluidized bed. The results suggest that SCR De‐NOx on γ‐Fe2O3 catalyst is fit for operation below 200 °C in the fluidized reactor in conjunction with the effects of magnetic fields.
Analysis of Particle Fouling in Constant‐Pressure Submerged Membrane Filtration
Authors: Hwang K. J. , Chen H. C. , Tsai M. H. 
Published: June 2010

AbstractParticle fouling in constant pressure submerged membrane filtration is analyzed. A particulate sample, with a wide size distribution ranging from submicron to micron, is filtered using a flat‐sheet membrane module. The effects of filtration pressure and aeration conditions on the particle deposition probability, cake properties and filtration flux are discussed. Particle deposition is analyzed theoretically using a force balance model. The particle size distribution in a filter cake is smaller than that in the original suspension and gradually decreases during a filtration. An increase in filtration pressure leads to a higher filtration flux in the early period of filtration; however, after 3000 s the flux gradually approaches a pseudo‐steady value. The filtration flux is significantly enhanced by sparging air bubbles. An increase in air volumetric flow rate or a decrease in bubble size leads to a smaller particle size distribution in the cake. The particle deposition probability, cake mass and average specific filtration resistance calculated by using the proposed models agree fairly well with available experimental data.
Transitional Mixing of Shear‐Thinning Fluids in Vessels with Multiple Impellers
Authors: Woziwodzki S. , Broniarz‐Press L. , Ochowiak M. 
Published: June 2010

AbstractThe mixing efficiency of shear‐thinning fluids was evaluated using carboxymethylcellulose sodium salt (Na‐CMC) aqueous solutions of varying mass concentrations and three types of impellers (Rushton turbine (RT), six‐flat‐blade turbine (FBT), six‐pitched‐down‐blade turbine (PBT)) which were mounted on a common shaft in combinations of three, four, and five impellers. The mixing time proved to be dependent on the number of impellers as well as on the distance between. The Reynolds number has a significant influence on the mixing time for all studied systems. The results of power consumption allowed to choose the impeller system with the best efficiency.
Simulation of Levulinic Acid Adsorption in Packed Beds using Parallel Pore/Surface Diffusion Model
Authors: Liu B. , Zeng L. , Mao J. , Ren Q. 
Published: June 2010

AbstractThe adsorption of levulinic acid in fixed beds of basic polymeric adsorbents at 22 °C was studied under various operating conditions. A general rate model which considers pore diffusion and parallel pore/surface diffusion was solved numerically by orthogonal collocation on finite elements to describe the experimental breakthrough data. The adsorption isotherms, and the pore and surface diffusion coefficients were determined independently in batch adsorption studies. The external film resistance and the axial dispersion coefficient were estimated by the Wilson‐Geankoplis equation and the Chung‐Wen equation, respectively. Simulation elucidated that the model which considers parallel diffusion successfully describes the breakthrough behavior and gave a much better prediction than the model which considers pore diffusion. The results obtained in this work are applicable to design and optimizes the separation process.
Selective and Efficient Cycloisomerization of Alkynols Catalyzed by a New Ruthenium Complex with a Tetradentate Nitrogen–Phosphorus Mixed Ligand
Authors: Liu Pei Nian , Su Fu Hai , Wen Ting Bin , Sung Herman H.‐Y. , Williams Ian D. , Jia Guochen 
Published: June 2010

AbstractThe new ruthenium complex [Ru(N3P)(OAc)][BPh4] (4), in which N3P is the N,P mixed tetradentate ligand N,N‐bis[(pyridin‐2‐yl)methyl]‐[2‐(diphenylphosphino)phenyl]methanamine was synthesized. The complex was found to be catalytically active for the endo cycloisomerization of alkynols. The catalytic reactions can be used to synthesize five‐, six‐, and seven‐membered endo‐cyclic enol ethers in good to excellent yields. A catalytic cycle involving a vinylidene intermediate was proposed for the catalytic reactions. Treatment of complex 4 with PhCCH and H2O gave the alkyl complex [Ru(CH2Ph)(CO)(N3P)][BPh4] (30), which supports the assumption that the catalytic reactions involve addition of a hydroxyl group to the CC bond of vinylidene ligands.
The First Examples of a Crown Ether Intramolecularly Encapsulating Mono‐ and Diorganotin Dications: Synthesis and Structures of [PhSnCH2([16]crown‐5)][ClO4]2 and [HOSnCH2([16]crown‐5)][Y]2 (Y=ClO4, CF3SO3)
Authors: Tagne Kuate Alain Charly , Schürmann Markus , Schollmeyer Dieter , Hiller Wolf , Jurkschat Klaus 
Published: June 2010

AbstractThe reaction of silver perchlorate with [PhI2SnCH2([16]crown‐5)] (1) and [I3SnCH2([16]crown‐5)] (2) gave the organotin(IV)‐substituted crown ether complexes [PhSnCH2([16]crown‐5)][ClO4]2 (3) and [HOSnCH2([16]crown‐5)][Y]2 (4: Y=ClO4, 5: Y=CF3SO3), respectively. All compounds have been isolated as air‐stable materials and characterised by 1H, 13C, 119Sn and 119Sn MAS (5) NMR spectroscopy, ESIMS spectrometry, elemental analysis and by single‐crystal X‐ray diffraction analysis. The molecular structures of 3–5 show that the tin(IV) cation fits perfectly into the crown ether cavity and is coordinated by the five oxygen atoms of the ring to give a pentagonal bipyramidal configuration about the central metal cation. Notably, compounds 4 and 5 contain the first monomeric monoorganotin dication. Moreover, there are 3J(1H,119Sn) coupling constants to the CH2CH proton of 377 (3) and 470 Hz (4, 5) that are, to the best of our knowledge, the biggest such couplings ever reported.
Chain‐Growth Versus Step‐Growth Mechanisms for the Suzuki–Heck Polymerisation of Fluorenyldibromides with Potassium Vinyl Trifluoroborate
Authors: Grisorio Roberto , Suranna Gian Paolo , Mastrorilli Piero 
Published: June 2010

AbstractThe mechanism of the Suzuki–Heck (SuHe) polymerisation of 2,7‐dibromo‐9,9‐di(n‐dodecyl)fluorene (1) with potassium vinyl trifluoroborate (PVTB) for the synthesis of poly(fluorenylene vinylene)s (PFVs) has been investigated. In the first stage, a palladium‐catalysed chain‐growth AA/B(C)‐type polycondensation occurs, as evidenced by the linear trend observed when plotting the molecular weights of the polymer formed against the consumption of the monomer. The chain‐growth stage takes place until complete consumption of 1 and allows one to envisage the alternating addition of PVTB (by a Suzuki step) and 1 (by a Heck step) to the growing chain. Such alternating addition seems to proceed through a peculiar catalyst transfer during which the metal is constantly bound to the growing chain, confirmed by MALDI end‐group analysis. On prolonging the reaction after the disappearance of 1, a second stage takes place, leading to higher molecular weight polymers, which are formed by the step‐growth condensation of the fragments generated in the first stage. The molecular weights of the final PFVs depend on the PVTB/1 feed ratio. Thus, by using a PVTB/1 molar ratio of 1.1, the final PFV was characterised by an Mn of 39600 Da, whereas when using a PVTB/1 molar ratio of 2.0, the final PFV was characterised by an Mn of 13200 Da.
Selective Monoacylation of Ferrocene with Bulky Acylating Agents over Mesoporous Sieve AlKIT‐5
Authors: Procházková Dana , Bejblová Martina , Vlk Josef , Vinu Ajayan , Štěpnička Petr , Čejka Jiří 
Published: June 2010

AbstractFerrocene acylation with bulky acylating agents (1‐adamantoyl, benzoyl, 2‐chlorobenzoyl, and cinnamoyl chlorides; and benzoic anhydride) catalyzed by AlKIT‐5 mesoporous catalysts was investigated. AlKIT‐5 catalysts with varying ratios of Si/Al were synthesized using tetraethoxysilane and aluminum isopropoxide as the structural building blocks and Pluronic F127 as a template under acidic conditions and were characterized in detail by X‐ray powder diffraction, magic‐angle spinning (MAS) NMR spectroscopy, sorption of nitrogen, energy‐dispersive X‐ray spectroscopy (EDS), SEM, TEM, and FTIR with pyridine as a probe molecule. The catalytic activity of the prepared AlKIT‐5 catalysts in ferrocene acylation was shown to depend on the type of the acylating agent, thus likely reflecting the strength of interactions between the acyl source, the product, and the solid catalysts when the acylation reaction was carried out at 100 °C. In all reactions, the AlKIT‐5 catalysts afforded exclusively the monoacylated products (100 % selectivity) most likely due to deactivation of the second cyclopentadiene ring by attachment of the first acyl group, steric reasons, and some competitive interactions of the monoacylferrocenes with the catalysts. The prepared AlKIT‐5 catalysts could be regenerated without any significant loss of the ferrocene conversion.
Efficient Synthesis of Biologically Interesting 3,4‐Diaryl‐Substituted Succinimides and Maleimides: Application of Iron‐Catalyzed Carbonylations
Authors: Prateeptongkum Saisuree , Driller Katrin Marie , Jackstell Ralf , Spannenberg Anke , Beller Matthias 
Published: June 2010

AbstractA straightforward two‐step synthesis of trans‐3,4‐disubstituted succinimides through a palladium‐catalyzed Sonogashira reaction and an iron‐catalyzed double carbonylation is described. In situ oxidative dehydrogenation gave the corresponding 3,4‐diarylmaleimides. By starting from readily available aryl and heteroaryl halides, a variety of new analogues and derivatives of bioactive 3,4‐bisindolylmaleimides are obtained in good yield and selectivity.
Self‐Assembled Ultralong Chiral Nanotubes and Tuning of Their Chirality Through the Mixing of Enantiomeric Components
Authors: Zhu Xuefeng , Li Yuangang , Duan Pengfei , Liu Minghua 
Published: June 2010

AbstractEnantiomeric L‐ or D‐glutamic acid based lipids were designed and their self‐assembly was investigated. It was found that at a certain concentration, either L‐ or D‐enantiomeric derivatives could self‐assemble in absolute alcohol to form a white organogel, which was composed of ultralong nanotubes with an aspect ratio higher than 1000. Further investigations revealed that these nanotubes were in chiral forms. The chirality of the nanotubes was determined by that of the enantiomers employed. In addition, when D and L enantiomers were mixed in different ratios, the nanotube could be tuned consecutively from nanotubes with a helical seam to nanotwists, the chirality of which being determined by the excess enantiomer in the mixed systems. In the case of an equimolar mixture of the enantiomers, flat nanoplates instead of helical nanotubes or nanotwists were obtained. The FTIR vibrational data and XRD layer‐distance values showed a consecutive change as a function of the enantiomeric excess. It was further revealed that the slightly stronger interaction between D–L enantiomeric pairs than that between D–D or L–L pairs was responsible for the formation of the diverse self‐assembled nanostructures.
ChemInform Abstract: Infinite, Linear, Unbranched Borynide Chains in LiBx — Isoelectronic to Polyyne and Polycumulene.
Authors: Woerle Michael , Nesper Reinhard 
Published: June 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 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: Optical Properties of Se2‐ and Se2 Color Centers in the Red Selenium Ultramarine with the Sodalite Structure.
Authors: Schlaich H. , Lindner G.‐G. , Feldmann J. , Goebel E. O. , Reinen D. 
Published: June 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 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 a New Spinel, Li1.02Al0.25Mn1.75O3.97 S0.03, Operating at Potentials Between 4.3 and 2.4 V.
Authors: Park Sang Ho , Park Ki Soo , Sun Yang Kook , Nahm Kee Suk 
Published: June 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 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: Cation Effects on the Voltammetric Behavior of α‐Keggin‐Type [SiMo12O40]4‐ and [PMo12O40]3‐ Complexes in CH3COCH3 and CH3CN.
Authors: Himeno Sadayuki , Takamoto Masayo , Ueda Tadaharu 
Published: June 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 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: Charged Paracyclophanes Behave as Annulenes with Enhanced Anisotropy.
Authors: Shabtai Elad , Segev Omri , Beust Ronald , Rabinovitz Mordecai 
Published: June 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 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: Novel Chiral Bisoxazoline Ligands with a Biphenyl Backbone: Preparation, Complexation, and Application in Asymmetric Catalytic Reactions.
Authors: Imai Yoshitane , Zhang Wanbin , Kida Toshiyuki , Nakatsuji Yohji , Ikeda Isao 
Published: June 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 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 Valine‐Derived Lithiated 3‐Methylthiomethyl‐1,3‐oxazolidin‐2‐one for Enantioselective Nucleophilic Hydroxymethylation, Formylation, and Alkoxycarbonylation of Aldehydes.
Authors: Gaul Christoph , Seebach Dieter 
Published: June 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 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: Practical Catalytic Enantioselective Synthesis of α,α‐Dialkyl‐α‐amino Acids by Chiral Phase‐Transfer Catalysis.
Authors: Ooi Takashi , Takeuchi Mifune , Kameda Minoru , Maruoka Keiji 
Published: June 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 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: 2,5‐Dimethylphenacyl as a New Photoreleasable Protecting Group for Carboxylic Acids.
Authors: Klan Petr , Zabadal Miroslav , Heger Dominik 
Published: June 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 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‐Benzoylation of Methyl 1‐Adamantanecarboximidate.
Authors: No B. I. , Zotov Yu. L. , Shishkin E. V. , Klimov D. S. , Gora A. V. 
Published: June 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 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: Lithium‐α‐lithioacetate and β‐Lithiopropionate: Useful Intermediates in Organic Synthesis.
Authors: Pastor Isidro M. , Yus Miguel 
Published: June 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 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: SmI2‐Mediated Nitrile Aldol Reaction.
Authors: Caracoti Andrei , Flowers II Robert A. 
Published: June 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 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 Novel Reactivity of Halomethyldimethylsulfonium Salts.
Authors: Xu Yuelian , Fletcher Michelle , Dolbier Jr. William R. 
Published: June 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 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‐Acyloxy‐N‐alkoxyureas.
Authors: Shtamburg V. G. , Pleshkova A. P. , Serdyuk V. N. , Ivonin S. P. 
Published: June 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 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.