bluuebunny/crossref_metadata_2025_split huggingface dataset:
Comparative analysis of drivers' start‐up time of the first two vehicles at signalized intersections
Authors: Li Zhenlong , Wang Baoju , Zhang Jiankun 
Published: June 2015

SummaryThe aim of this study is to comparatively analyze drivers' start‐up time (SUT) of the first two vehicles at signalized intersections. Three groups of data, the SUT of the first vehicle, the SUT of the second vehicle, and car‐following SUT of the second vehicle, were collected through a videography technique. The comparative analysis was then conducted. Pearson's correlation was used to determine the correlation between the three groups. Multiple regression was used to analyze and identify which independent variable or variable combination was the best explanation of the SUT of the second vehicle. The combination patterns of start‐up behavior of the first two vehicles were discovered using the fuzzy c‐means clustering. The data obtained show that the mean of the car‐following SUT of the second vehicle is 1.08 seconds. Four combination patterns of start‐up behavior of the first two vehicles, {fast, fast}, {fast, slow}, {slow, fast}, and {slow, slow}, are obtained. The numbers of the first pattern {fast, fast} and the fourth pattern {slow, slow} account for 71.80% and 21.82% of total patterns, respectively. These results suggest that the main factors influencing the SUT of the second vehicle are the type and SUT of the first vehicle. The results seem to indicate that the SUT of the first vehicle plays a crucial role in determining total start‐up lost time. The pattern {fast, fast} is the best for decreasing start‐up lost time. Copyright © 2015 John Wiley & Sons, Ltd.
Gastric emptying and quality of life after pancreatoduodenectomy with retrocolic or antecolic gastroenteric anastomosis
Authors: Eshuis W J , de Bree K , Sprangers M A G , Bennink R J , van Gulik T M , Busch O R C , Gouma D J 
Published: June 2015

AbstractBackgroundDelayed gastric emptying (DGE) is a major problem after pancreatoduodenectomy (PD). A recent multicentre randomized trial reported no difference in gastric emptying rates between retrocolic and antecolic reconstruction routes. The present study looked at quality of life with these two approaches and the correlation with gastric emptying.MethodsThis was a substudy of patients completing a panel of quality-of-life questionnaires within a randomized trial comparing retrocolic and antecolic gastroenteric reconstruction after PD. Gastric emptying was assessed by scintigraphy 1 week after surgery. Quality of life was measured with the EuroQoL – 5D questionnaire (EQ-5D™), the European Organization for Research and Treatment of Cancer Core Quality of Life Questionnaire (QLQ-C30) with its pancreatic cancer module (PAN26), and the Gastrointestinal Quality of Life Index (GIQLI).ResultsThere were 38 patients in the retrocolic and 35 in the antecolic group. Baseline characteristics and clinical outcomes were similar in the two groups. Median time to half-emptying of stomach content after surgery was 145 and 64 min in the retrocolic and antecolic group respectively (P = 0·189). Median percentages of residual activity after 2 h were 64 and 28 per cent respectively (P = 0·213). Quality of life did not differ at any time point between the groups. At 2 weeks after surgery, patients with DGE had significantly worse outcomes on two EQ-5D™ domains, ten QLQ-C30/PAN26 subscales, and two GIQLI subscales and total score. Effect sizes were moderate to large.ConclusionThe route of gastroenteric reconstruction after PD does not influence either gastric emptying at scintigraphy or quality of life. The impact of DGE on quality of life is clinically significant. Registration number NTR1697 (www.trialregister.nl).
Mesoporous Manganese Sulfide Spheres Anchored on Graphene Sheets as High‐Capacity and Long‐Life Anode Materials for Lithium‐Ion Batteries
Authors: Chen Dezhi , Quan Hongying , Huang Zhongning , Guo Lin 
Published: June 2015

AbstractA novel porous manganese sulfide/graphene composite was prepared by a simple in situ solvothermal approach. These mesoporous manganese sulfide sub‐microspheres with an average diameter of 700 nm were anchored homogeneously onto graphene nanosheets. Such a special microstructure not only effectively alleviates the mechanical strain of the electrode upon lithiation/delithiation, but it also improves contact between the electrode materials and the electrolyte. As a result, the composite exhibits a high Li‐ion storage capacity and excellent cycling stability as an anode material for lithium‐ion batteries. At a current of 50 mA h g−1, the material delivers a reversible capacity up to 1231 mA h g−1; at a current density of 0.2 A g−1, the material still retains a reversible capacity of 735 mA h g−1 after 300 cycles.
Carbon‐Supported Copper Nanomaterials: Recyclable Catalysts for Huisgen [3+2] Cycloaddition Reactions
Authors: Shaygan Nia Ali , Rana Sravendra , Döhler Diana , Jirsa Franz , Meister Annette , Guadagno Liberata , Koslowski Eik , Bron Michael , Binder Wolfgang H. 
Published: June 2015

AbstractHighly disperse copper nanoparticles immobilized on carbon nanomaterials (CNMs; graphene/carbon nanotubes) were prepared and used as a recyclable and reusable catalyst to achieve CuI‐catalyzed [3+2] cycloaddition click chemistry. Carbon nanomaterials with immobilized N‐heterocyclic carbene (NHC)‐Cu complexes prepared from an imidazolium‐based carbene and CuI show excellent stability including high efficiency at low catalyst loading. The catalytic performance evaluated in solution and in bulk shows that both types of Cu‐CNMs can function as an effective recyclable catalysts (more than 10 cycles) for click reactions without decomposition and the use of external additives.
ChemInform Abstract: Crystal Structure of the Europium(II) Aluminate Eu3Al2O6.
Authors: Niehaus Oliver , Poettgen Rainer 
Published: June 2015

AbstractSingle crystals of the title compound are obtained as a side product in an attempt to prepare EuCdAl from a mixture of the elements in a 1:1:1 atomic ratio (Nb ampule, 1323 K, 5 min followed by 873 K for 2 h).
ChemInform Abstract: Crystal Structure, Thermally Stability and Photoluminescence Properties of Novel Sr10(PO4)6O:Eu2+ Phosphors.
Authors: Guo Qingfeng , Liao Libing , Mei Lefu , Liu Haikun 
Published: June 2015

AbstractSr10(PO4)6O:Eu2+x (x = 0.005—0.07) is prepared by solid state reaction of stoichiometric amounts of SrCO3, (NH4)2HPO4, and Eu2O3 in a reducing atmosphere of 5% H2/N2 (alumina crucible, 1300 °C).
ChemInform Abstract: BiOClxBryIz (x + y + z = 1) Solid Solutions with Controllable Band Gap and Highly Enhanced Visible Light Photocatalytic Performances.
Authors: Sun Xiuguo , Zhang Yangyang , Li Chunmei , Zhang Zhifeng , Peng Zheng , Si Huayan , Zhang Jianmin , Li Yanting 
Published: June 2015

AbstractSingle phase BiOClxBryIz solid solutions with controllable band gap and highly enhanced visible light photocatalytic performance are prepared by hydrolysis of stoichiometric amounts of aqueous NaCl, NaBr, KI, and NaOAc solutions to which a Bi(NO3)3 solution in glacial AcOH is given.
ChemInform Abstract: Synthesis, Characterization and Thermoelectric Properties of the Oxytelluride Bi2O2Te.
Authors: Luu Son D. N. , Vaqueiro Paz 
Published: June 2015

AbstractBi2O2Te is prepared by solid state reaction of a stoichiometric mixture of Bi, Bi2O3, and Te (evacuated silica tubes, 873 K, 10 h; complex heating schedule).
ChemInform Abstract: Nickel Catalyzed [3 + 2] Cycloaddition Reaction of Bis(methylenecyclopropane) with Cyclic and Acyclic Dienophiles.
Authors: Kuila Bilash , Mahajan Dinesh , Singh Prabhpreet , Bhargava Gaurav 
Published: June 2015

AbstractThe cycloaddition reactions are performed under conventional heating conditions or microwave irradiation to form cyclopentane derivatives.
ChemInform Abstract: Iodine‐Promoted Oxidative Amidation of Terminal Alkenes — Synthesis of α‐Ketoamides, Benzothiazoles, and Quinazolines.
Authors: Deshidi Ramesh , Devari Shekaraiah , Shah Bhahwal Ali 
Published: June 2015

AbstractFacile protocols for the synthesis of α‐ketoamides from terminal alkynes both either at high temperature or at room temperature are presented.
ChemInform Abstract: Ruthenium‐Catalyzed Alkene—Alkyne Coupling of Disubstituted Olefins: Application to the Stereoselective Synthesis of Trisubstituted Enecarbamates.
Authors: Trost Barry M. , Cregg James J. 
Published: June 2015

AbstractCarbamates are investigated as directing groups in the title process and ‐NH‐Boc is found to be the optimal one.
ChemInform Abstract: Base‐Promoted Coupling of Carbon Dioxide, Amines, and N‐Tosylhydrazones: A Novel and Versatile Approach to Carbamates.
Authors: Xiong Wenfang , Qi Chaorong , He Haitao , Ouyang Lu , Zhang Min , Jiang Huanfeng 
Published: June 2015

AbstractA novel and versatile reaction of CO2 with N‐tosylhydrazones and amines is developed providing an attractive method for the straightforward synthesis of various carbamates.
ChemInform Abstract: Unveiling the Uncatalyzed Reaction of Alkynes with 1,2‐Dipoles for the Room Temperature Synthesis of Cyclobutenes.
Authors: Alcaide Benito , Almendros Pedro , Fernandez Israel , Lazaro‐Milla Carlos 
Published: June 2015

AbstractA pyridiumethanide zwitterionic salt is used as dipole precursor for the metal‐free direct [2+2] cycloaddition with alkynes.
ChemInform Abstract: Reduction of Nitroarenes Using CO and H2O in the Presence of a Nanostructured Cobalt Oxide/Nitrogen‐Doped Graphene (NGr) Catalyst.
Authors: Westerhaus Felix A. , Sorribes Ivan , Wienhoefer Gerrit , Junge Kathrin , Beller Matthias 
Published: June 2015

AbstractThe scalable reaction procedure tolerates a wide variety of functional groups including reducible ones.
ChemInform Abstract: Methylaluminoxane (MAO)‐Assisted Direct Amidation of Esters.
Authors: Desrat Sandy , Ducousso Aline , Gapil Shelly , Remeur Camille , Roussi Fanny 
Published: June 2015

AbstractThe reaction is performed starting from alkanoates, alkenoates, and benzoates with the corresponding methyl carboxylates providing the highest product yields.
ChemInform Abstract: Imidazolium Salt‐Supported Mukaiyama Reagent: An Efficient Condensation Reagent for Amide Bond Formation.
Authors: Pandey Khima , Muthyala Manoj Kumar , Choudhary Sunita , Kumar Anil 
Published: June 2015

AbstractThe stable and efficient imidazolium salt‐supported Mukaiyama reagent is utilized for the amide bond formation between various carboxylic acids and amines and enables the isolation of the amide products by simple extraction with organic solvents in high purity.
ChemInform Abstract: Fe‐Catalyzed Double Cross‐Dehydrogenative Coupling of 1,3‐Dicarbonyl Compounds and Arylmethanes.
Authors: Yang Kai , Song Qiuling 
Published: June 2015

AbstractThe scalable alkylation of 1,3‐dicarbonyl compounds with substituted toluene derivatives or arylmethylbenzene derivatives is described.
ChemInform Abstract: Enantioselective Copper‐Catalyzed Reductive Coupling of Vinylazaarenes with N‐Boc Aldimines.
Authors: Choi Bonnie , Saxena Aakarsh , Smith Joshua J. , Churchill Gwydion H. , Lam Hon Wai 
Published: June 2015

AbstractThe reaction of vinylhetarenes with N‐Boc protected aryl aldimines delivers the products with moderate to excellent diastereoselectivities and moderate to high enantioselectivities.
ChemInform Abstract: B(C6F5)3‐Catalyzed Metal‐Free Hydrogenation of Naphthylamines.
Authors: Li Gen , Liu Yongbing , Du Haifeng 
Published: June 2015

AbstractA variety of tetrahydronaphthylamines are obtained under mild reaction conditions through this first metal‐free hydrogenation reaction of naphthylamines.
ChemInform Abstract: Indium‐Catalyzed, Novel Route to β,β‐Disubstituted Indanones via Tandem Nakamura Addition—Hydroarylation—Decarboxylation Sequence.
Authors: Rajesh Nimmakuri , Prajapati Dipak 
Published: June 2015

AbstractThis novel method furnishes β,β‐disubstituted indanones by a sequential one‐pot reaction from β‐keto esters or 1,3‐diketones with aromatic terminal acetylenes.
ChemInform Abstract: Diastereo‐ and Facially Selective Imino‐Diels—Alder Cycloaddition of 2‐Azeditinone‐Tethered 1‐Azadiene: Synthesis of Functionalized (2‐Oxo‐4‐styrylazetidin‐3‐yl)—Pyridine Hybrids.
Authors: Kumar Yogesh , Singh Prabhpreet , Bhargava Gaurav 
Published: June 2015

AbstractAll reactions are performed in toluene as well as xylene with the latter delivering lower product yields.
ChemInform Abstract: Application of Chiral Ligands: Carbohydrates, Nucleoside‐Lanthanides and Other Lewis Acid Complexes to Control Regio‐ and Stereoselectivity of the Dipolar Cycloaddition Reactions of Nitrile Oxides and Esters.
Authors: Gucma Miroslaw , Golebiewski W. Marek , Krawczyk Maria 
Published: June 2015

Abstract4R,5S‐ or 4S,5R‐trisubstituted isoxazolines are obtained.
ChemInform Abstract: Microwave‐Assisted Catalyst‐Free Synthesis of Substituted 1,2,4‐Triazoles.
Authors: Shelke Ganesh M. , Rao V. Kameswara , Jha Mukund , Cameron T. Stan , Kumar Anil 
Published: June 2015

AbstractThe reaction between variously substituted aryl or alkyl hydrazines and formamide provides the title compounds in moderate to good yields.
ChemInform Abstract: Aminomethylation Reaction of ortho‐Pyridyl C—H Bonds Catalyzed by Group 3 Metal Triamido Complexes.
Authors: Nagae Haruki , Shibata Yu , Tsurugi Hayato , Mashima Kazushi 
Published: June 2015

AbstractComplexes of either gadolinium or yttrium are found to be optimal in the reaction of pyridine derivatives and some analogous N‐heterocycles with unactivated imines.
ChemInform Abstract: A Complementary Route to Diaminopyrimidines Through Regioselective SNAr Amination Reactions.
Authors: O'Donnell Michael , Charrier Jean‐Damien 
Published: June 2015

Abstract2‐Chloro‐4‐(2,3,5,6‐tetrafluorophenoxy)pyrimidine (I) can be diaminated in a regioselective stepwise manner: first amination occurs at C‐2, second amination at C‐4.
ChemInform Abstract: Synthesis, Characterization and Application of ZnFe2O4 Nanoparticles as a Heterogeneous Ditopic Catalyst for the Synthesis of Pyrano[2,3‐d] Pyrimidines.
Authors: Khazaei Ardeshir , Ranjbaran Azam , Abbasi Fatemeh , Khazaei Marzieh , Moosavi‐Zare Ahmad Reza 
Published: June 2015

AbstractAn efficient method for the synthesis of the title compounds (IV) by a one‐pot three‐component condensation of 1,3‐dimethylbarbituric acid (I), various aromatic aldehydes (II), and malononitrile (III) using ZnFe2O4 nanoparticles as heterogeneous catalyst under solvent‐free conditions is presented.
ChemInform Abstract: Preferential α‐Hydrosilylation of Terminal Alkynes by Bis‐N‐heterocyclic Carbene Rhodium(III) Catalysts.
Authors: Iglesias Manuel , Aliaga‐Lavrijsen Melanie , Miguel Pablo J. Sanz , Fernandez‐Alvarez Francisco J. , Perez‐Torrente Jesus J. , Oro Luis A. 
Published: June 2015

AbstractRhodium complexes featuring one or two trifluoroacetato ligands catalyze the unusual formation of a variety of α‐vinylsilanes in good selectivities by non‐directed hydrosilylation of terminal alkynes.
ChemInform Abstract: Practical Synthesis of anti‐β‐Hydroxy‐α‐Amino Acids by PdII‐Catalyzed Sequential C(sp3)—H Functionalization.
Authors: Chen Kai , Zhang Shuo‐Qing , Jiang Huai‐Zhi , Xu Jing‐Wen , Shi Bing‐Feng 
Published: June 2015

AbstractSubstrates of type (I) bearing a directing 8‐aminoquinoline auxiliary are monoarylated or monoalkylated to afford starting materials such as (IIIa) or (IX).
ChemInform Abstract: Constituents of the Stem Barks of Ailanthus altissima and Their Potential to Inhibit LPS‐Induced Nitric Oxide Production.
Authors: Kim Hye Mi , Kim Su Jung , Kim Ha‐Yeong , Ryu Byeol , Kwak Hokwang , Hur Jonghyun , Choi Jung‐Hye , Jang Dae Sik 
Published: June 2015

AbstractFifteen compounds, including three new canthin‐6‐one‐glycosides (I), are isolated and evaluated for their inhibitory effects on LPS‐induced nitric oxide (NO) production in RAW 264.7 cells at non‐toxic concentrations.
ChemInform Abstract: Further Alkaloids from the Leaves of Trigonostemon lii
Authors: Tan Cheng‐Jian , Zhang Yu , Kong Ning‐Chuan , Di Ying‐Tong , Hao Xiao‐Jiang 
Published: June 2015

Abstractisolation, structure elucidation, and cytotoxicity of four new indole alkaloids, trigonoliimines A (I), B (IIb), C (IIa), and D (III)
ChemInform Abstract: A New Efficient Stereoselective Method for the Synthesis of (E)‐5‐Aminoallyl‐pyrimidine‐5′‐triphosphates Using Palladium‐Catalyzed Heck Reaction.
Authors: Kore Anilkumar R. , Senthilvelan Annamalai , Shanmugasundaram Muthian , Sandoval David , Pardo Andrew 
Published: June 2015

AbstractThe catalytic reaction tolerates a wide variety of functional groups such as hydroxyl, amide, phosphorus, and amine present in the substrates.
ChemInform Abstract: Substitution of Alcohols by N‐Nucleophiles via Transition Metal‐Catalyzed Dehydrogenation
Authors: Yang Qin , Wang Qingfu , Yu Zhengkun 
Published: June 2015

AbstractReview: recent advances in transition metal‐catalyzed dehydrogenative substitution of alcohols by N‐nucleophiles since 2009; 183 refs.
VCD Robustness of the Amide‐I and Amide‐II Vibrational Modes of Small Peptide Models
Authors: Góbi Sándor , Magyarfalvi Gábor , Tarczay György 
Published: June 2015

AbstractThe rotational strengths and the robustness values of amide‐I and amide‐II vibrational modes of For(AA)nNHMe (where AA is Val, Asn, Asp, or Cys, n = 1–5 for Val and Asn; n = 1 for Asp and Cys) model peptides with α‐helix and β‐sheet backbone conformations were computed by density functional methods. The robustness results verify empirical rules drawn from experiments and from computed rotational strengths linking amide‐I and amide‐II patterns in the vibrational circular dichroism (VCD) spectra of peptides with their backbone structures. For peptides with at least three residues (n ≥ 3) these characteristic patterns from coupled amide vibrational modes have robust signatures. For shorter peptide models many vibrational modes are nonrobust, and the robust modes can be dependent on the residues or on their side chain conformations in addition to backbone conformations. These robust VCD bands, however, provide information for the detailed structural analysis of these smaller systems. Chirality 27:625–634, 2015 © 2015 Wiley Periodicals, Inc.
Sex and Food Influence on Intestinal Absorption of Ketoprofen Gastroresistant Formulation
Authors: Magallanes Laura , Lorier Marianela , Ibarra Manuel , Guevara Natalia , Vázquez Marta , Fagiolino Pietro 
Published: June 2015

AbstractSixteen healthy volunteers (8 women and 8 men) participated in a 2‐period, 2‐treatment crossover study. A delayed‐release gastroresistant formulation of ketoprofen was administered under fasting and fed conditions. Cmax, AUC, Cmax/AUC, and kel obtained after food coadministration did not differ from those calculated under fasting administration. Ninety‐five percent confidence intervals for fed/fasting geometric mean ratio of Cmax/AUC and AUC were 0.80–1.14 and 0.80–1.23, respectively. A significant difference (P < .01) was found between lag‐time medians (T0), with a longer T0 after food intake (5.5 vs 2.5 hours). Also, a significant difference between the medians of Tmax was found (P < .01), being 7.0 hours after food coadministration and 4.0 hours under fasting administration, but this difference disappeared once T0 was subtracted from Tmax. Cmax/AUC, which is related to drug absorption rate, showed significant differences between sexes. Men showed higher (P =.006) Cmax/AUC means (0.468 ± 0.094 vs 0.361 ± 0.087 h−1. Tmax was also significantly different (P < .05), being 4.0 (3.0–5.0) hours for men and 8.0 (5.0–10.0) hours for women. In conclusion, men showed a faster intestinal absorption rate with earlier time‐to‐peak plasma concentration of ketoprofen. Food coadministration extended the gastric residence time of formulation but exerted no effect on its intestinal absorption pattern.
Manganese Oxide Catalyst Grown on Carbon Paper as an Air Cathode for High‐Performance Rechargeable Zinc–Air Batteries
Authors: Sumboja Afriyanti , Ge Xiaoming , Goh F. W. Thomas , Li Bing , Geng Dongsheng , Hor T. S. Andy , Zong Yun , Liu Zhaolin 
Published: June 2015

AbstractManganese oxide is grown directly on carbon paper through a simple immersion process, and used as a catalyst‐modified air cathode for rechargeable zinc–air batteries. The manganese oxide is distributed evenly within the porous carbon paper, which promotes a rapid three‐phase reaction and high utilization of the active materials. Zinc–air batteries with the manganese oxide catalyst directly grown on the carbon paper exhibit improved performance compared with zinc–air batteries fabricated by using manganese oxide powder catalyst coated on carbon paper. The directly grown catalyst reduces the contact resistance and enhances the discharge/charge profile of the zinc–air batteries. Zinc–air batteries with the directly grown catalyst show a discharge voltage of 1.2 V at a current density of 15 mA cm−2 and deliver a power density as high as 108 mW cm−2 at an applied current of 168 mA cm−2. Furthermore, good cycling stability for up to 500 cycles is achievable during continuous discharge–charge tests without the need to replace the zinc anode or replenish the electrolyte; this outperforms most currently available bifunctional catalysts for rechargeable zinc–air batteries. This study illustrates a promising platform to enhance the cycle life of rechargeable metal–air batteries.
Recent Advances in Doped Mechanoluminescent Phosphors
Authors: Peng Dengfeng , Chen Bing , Wang Feng 
Published: June 2015

AbstractMechanoluminescence (ML) is a phenomenon characterized by photon emission in response to mechanical stimulus. ML is usually observed in inorganic crystals that produce strain electric fields if deformed. After being doped with luminescent lanthanide and transition‐metal ions, ML can be significantly enhanced and rationally tuned, which leads to promising applications, such as light sources, displays, and advanced sensors to probe the dynamic stress distribution over a large area. This Minireview focuses on recent developments in the design and synthesis of doped ML phosphors, as well as highlighting state‐of‐the‐art applications of these phosphors.
Acid‐Functionalized Mesoporous Carbon: An Efficient Support for Ruthenium‐Catalyzed γ‐Valerolactone Production
Authors: Villa Alberto , Schiavoni Marco , Chan‐Thaw Carine E. , Fulvio Pasquale F. , Mayes Richard T. , Dai Sheng , More Karren L. , Veith Gabriel M. , Prati Laura 
Published: June 2015

AbstractThe hydrogenation of levulinic acid has been studied using Ru supported on ordered mesoporous carbons (OMCs) prepared by soft‐templating. P‐ and S‐containing acid groups were introduced by postsynthetic functionalization before the addition of 1 % Ru by incipient wetness impregnation. These functionalities and the reaction conditions mediate the activity and selectivity of the levulinic acid hydrogenation. The presence of S‐containing groups (Ru/OMC‐S and Ru/OMC‐P/S) deactivates the Ru catalysts strongly, whereas the presence of P‐containing groups (Ru/OMC‐P) enhances the activity compared to that of pristine Ru/OMC. Under mild conditions (70 °C and 7 bar H2) the catalyst shows high selectivity to γ‐valerolactone (GVL; >95 %) and high stability on recycling. However, under more severe conditions (200 °C and p=40 bar) Ru/OMC‐P is particularly able to promote GVL ring‐opening and the consecutive hydrogenation to pentanoic acid.