bluuebunny/crossref_metadata_2025_split huggingface dataset:
Effect of immobilized polygalacturonase from Mucor circinelloidesITCC‐6025 on wine fermentation
Authors: Sharma Sakshi , Hiteshi Kalpana , Gupta Reena 
Published: April 2013

AbstractPectinases are among the most widely distributed enzymes in bacteria, fungi, and plants. Almost all the commercial preparations of pectinases are produced from fungal sources. Mucor circinelloides ITCC‐6025 produced polygalacturonase when grown in Riviere's medium containing pectin (methyl ester) as the sole source of carbon. Immobilization of purified polygalacturonase was done on silica gel with 86% efficiency. The enzyme took 60 Min to bind maximally on the support. The immobilized enzyme showed maximum activity at a temperature of 45°C (4.57 U/mg) and pH 5.4. The immobilized enzyme was reused for four cycles as it retained almost 55% of its activity. The immobilized enzyme treatment increased the formation of higher alcohols and phenolics during the course of wine formation from apple and plum juices, whereas there was a decrease in the amount of carbohydrates. The enzyme treatment also resulted in clarification of wine; there was an increase in transmittance at 650 nm (201.78% in the case of apple wine and 223.4% in the case of plum wine) as compared to the control (untreated wine).
The evaluation of violent thinking in adult offenders and non‐offenders using the Maudsley Violence Questionnaire
Authors: Walker Julian , Bowes Nicola 
Published: April 2013

ABSTRACTBackgroundThe Maudsley Violence Questionnaire (MVQ) was designed to measure explicit rules and beliefs associated with violence. Previous studies with young people and offenders with mental disorder found the MVQ to be a valid and reliable measure of violent thinking.AimsThis study explores the use of the MVQ with a ‘normal’ (non‐offender) population and an offender population without mental illness in order to evaluate how the MVQ's subscales related to violence within these groups.MethodThe MVQ was given to 78 adult male participants along with a measure of self‐reported violence; demographic information and criminal history were also recorded. Thirty‐five of the participants were convicted adult male offenders resident of an adult male closed prison in South Wales; 43 were volunteers from the staff group in the same prison. The MVQ factors were compared with self‐reported violence and with officially recorded violent convictions.ResultsAlthough both subscales of the MVQ related to self‐reported violence, ‘Machismo’ showed a stronger relationship to both self‐reported and officially recorded violence.ConclusionsViolent thinking, specifically beliefs measured by the Machismo subscale of the MVQ, was robustly associated with self‐reported and officially recorded violence in this study with offender and non‐offender adults.Implications

The MVQ is a valid and feasible measure for use with adult populations.
Violent thinking (specifically Machismo thinking styles) should be included in the assessments of violent offenders.
Work on violent thinking and reducing ‘macho’ thinking could be a useful adjunct to anger management work with violent offenders. Copyright © 2013 John Wiley & Sons, Ltd.
The role of self‐control and self‐esteem and the impact of early risk factors among violent offenders
Authors: Woessner Gunda , Schneider Stephanie 
Published: April 2013

ABSTRACTBackgroundResearch on the role of self‐esteem and self‐control among violent offenders has so far yielded inconsistent findings. Certain factors, such as an adverse upbringing, foster development of delinquent behaviour, but it is less clear how this is mediated. Little is known about the interrelationship between self‐control and self‐esteem or factors that influence them.Aim and hypothesisThis study aimed to examine the relevance of self‐esteem and self‐control as distinct characteristics of violent offenders, and of their interrelationship with biographical risk factors for violence.MethodData were obtained from interviews and psychological testing with 101 incarcerated violent male offenders.ResultsThese violent men showed higher body‐related self‐esteem compared with a general population sample. There were no offence‐specific differences for self‐control. Self‐esteem was associated with self‐control on binary testing, but, when entered into a regression analysis with attention and cognitive factors together with established early childhood risk factors, only the variable ‘family problems’ was independently related to self‐control.ConclusionThe findings stress the complex interrelation between self‐control, self‐esteem and early childhood risk factors for antisocial behaviour. The combination of low social self‐esteem, high body‐related self‐esteem and history of parenting problems characterising the violent offenders raises testable questions about whether high body‐related self‐esteem and violence are means of compensating for low social self‐esteem with origins in parental neglect, inconsistent or harsh discipline. Copyright © 2013 John Wiley & Sons, Ltd.
Synthesis of Chiral Ligands with Multiple Stereogenic Centers and Their Application in Titanium(IV)‐Catalyzed Enantioselective Desymmetrization of meso‐Epoxides
Authors: Kumar Manish , Kureshy Rukhsana I. , Ghosh Debashis , Khan Noor‐ul H. , Abdi Sayed H. R. , Bajaj Hari C. 
Published: April 2013

AbstractNew chiral ligands, (S,R,S)‐1, (S,S,S)‐1, (S,S,R)‐1, (S,R,R)‐1, (R,R,R)‐1, (R,R,S)‐1, (R,S,S)‐1, (R,S,R)‐1, (S,R,S)‐2, (S,S)‐3 and (R,S)‐4 with diverse stereogenic centers arising from various diastereomeric combinations of aminoalcohol functionality with (R)‐ and (S)‐1,1‐binaphthol, were prepared and characterized. Catalytically active Ti complexes were generated in situ in the presence of water for the enantioselective ring‐opening reaction of meso‐stilbene oxide, cyclohexene oxide, cyclopentene oxide, and cis‐butene oxide with different anilines as nucleophile. Significantly, catalysts Ti‐(S,R,S)‐1 and Ti‐(R,S,S)‐1 (15 mol %) produced syn‐beta‐amino alcohols of meso‐stilbene oxide with (1S,2S) and (1R,2R) configuration respectively in excellent yields (>98 %) and enantioselectivities (ee value >99 %) in 10 h at room temperature. However, aliphatic/cyclic epoxides with aniline gave better performance with the catalyst Ti‐(S,R,R)‐1. The complex Ti‐(S,R,S)‐1 was successfully subjected to catalyst recovery and recyclability experiments over 6 cycles in the asymmetric ring‐opening of meso‐stilbene oxide with aniline with retention of performance.
New Chiral Zwitterionic Phosphorus Heterocycles: Synthesis, Structure, Properties and Application as Chiral Solvating Agents
Authors: Sheshenev Andrey E. , Boltukhina Ekaterina V. , Grishina Anastasiya A. , Cisařova Ivana , Lyapkalo Ilya M. , Hii King Kuok (Mimi) 
Published: April 2013

AbstractA family of new chiral zwitterionic phosphorus‐containing heterocycles (zPHC) have been derived from methylene‐bridged bis(imidazolines). These structures were unambiguously determined, including single‐crystal XRD analysis for two compounds. The stability, acid/base and electronic properties of these dipolar phosphorus heterocycles were subsequently investigated. zPHCs can be successfully employed as a new class of chiral solvating agents for the enantiodifferentiation of chiral carboxylic and sulfonic acids by NMR spectroscopy. The stoichiometry and binding constants for the donor–acceptor complexes formed were established by NMR titration methods.
Rapid Synthesis of an Aluminum‐Rich MSE‐Type Zeolite by the Hydrothermal Conversion of an FAU‐Type Zeolite
Authors: Inagaki Satoshi , Tsuboi Yasuyuki , Nishita Yuji , Syahylah Tuan , Wakihara Toru , Kubota Yoshihiro 
Published: April 2013

AbstractAn aluminum‐rich MSE‐type zeolite (Si/Al is as small as 7) has been successfully synthesized in a remarkably short crystallization period of only 3 days by the hydrothermal conversion of an FAU‐type zeolite, presumably by the assembly of four‐membered‐ring (4‐R) aluminosilicate oligomers supplied by the double 6‐R (D6R) components of the FAU framework with the aid of the structure‐directing agents and seed crystals. The dealuminated version of the aluminum‐rich MSE‐type zeolite showed a high level of coke durability in addition to a significant yield of propylene, which indicates that this novel zeolitic material is suitable for industrial applications as a highly selective and long‐lived catalyst.
ChemInform Abstract: Magnetic, Thermal, and Transport Properties of Single‐Crystalline U3Fe4Ge4.
Authors: Henriques M. S. , Gorbunov D. I. , Waerenborgh J. C. , Havela L. , Andreev A. V. , Skourski Y. , Goncalves A. P. 
Published: April 2013

AbstractU3Fe4Ge4 single crystals are grown from a stoichiometric mixture of the elements by the Czochralski method.
ChemInform Abstract: Heterogeneous Cobalt Catalysts for the Acceptorless Dehydrogenation of Alcohols.
Authors: Shimizu Ken‐ichi , Kon Kenichi , Seto Mayumi , Shimura Katsuya , Yamazaki Hiroshi , Kondo Junko N. 
Published: April 2013

AbstractA Co/TiO2 catalyst shows high activity in the dehydrogenation of various secondary alcohols (I) and (III) to afford the corresponding ketones.
ChemInform Abstract: Mild and Homogeneous Cobalt‐Catalyzed Hydrogenation of C=C, C=O, and C=N Bonds.
Authors: Zhang Guoqi , Scott Brian L. , Hanson Susan K. 
Published: April 2013

AbstractIt is found that the Co complex (COC) efficiently promotes the hydrogenation of alkenes, aldehydes, ketones, and imines.
ChemInform Abstract: Phosphine‐Based Redox Catalysis in the Direct Traceless Staudinger Ligation of Carboxylic Acids and Azides.
Authors: Kosal Andrew D. , Wilson Erin E. , Ashfeld Brandon L. 
Published: April 2013

AbstractThe PhSiH3/PPh3‐mediated coupling of carboxylic acids and azides provides a straightforward and efficient approach to a number of carboxylic amides and peptides without isolation problems.
ChemInform Abstract: Expanding the Scope of Donor/Acceptor Carbenes to N‐Phthalimido Donor Groups: Diastereoselective Synthesis of 1‐Cyclopropane α‐Amino Acids.
Authors: Alford Joshua S. , Davies Huw M. L. 
Published: April 2013

AbstractReaction of phthalimidotriazole precursor (I), which is obtained from phthalimide, trimethylsilylacetylene, and mesyl azide with different alkenes followed by silica gel induced hydrolysis, results in a highly diastereoselective synthesis of the corresponding cyclopropane derivatives.
ChemInform Abstract: Copper‐Mediated Difluoromethylation of (Hetero)aryl Iodides and β‐Styryl Halides with Tributyl(difluoromethyl)stannane.
Authors: Prakash G. K. Surya , Ganesh Somesh K. , Jones John‐Paul , Kulkarni Aditya , Masood Kamil , Swabeck Joseph K. , Olah George A. 
Published: April 2013

AbstractCa‐mediated treatment of Bu3SnH with TmsCF3 allows an efficient access to the title stannane (III).
ChemInform Abstract: Alkene Dihydroxylation with Malonoyl Peroxides: Catalysis Using Fluorinated Alcohols.
Authors: Picon Sylvain , Rawling Michael , Campbell Matthew , Tomkinson Nicholas C. O. 
Published: April 2013

AbstractA practical two‐step one‐pot procedure is developed for the reaction of alkenes with cyclopropyl malonyl peroxide and subsequent hydrolysis to give syn‐diols.
ChemInform Abstract: Microwave‐Assisted One‐Step Synthesis of Acetophenones via Palladium‐Catalyzed Regioselective Arylation of Vinyloxytrimethylsilane.
Authors: Qian Wangke , Zhang Lei , Sun Haifeng , Jiang Hualiang , Liu Hong 
Published: April 2013

AbstractEmploying vinyloxytrimethylsilane (II) as a novel acylation reagent in the Heck arylation generates acetophenones in good to high yields from aryl iodides under microwave irradiation in a single step.
ChemInform Abstract: Direct Copper‐Catalyzed α‐Arylation of Benzyl Phenyl Ketones with Aryl Iodides: Route Towards Tamoxifen.
Authors: Danoun Gregory , Tlili Anis , Monnier Florian , Taillefer Marc 
Published: April 2013

AbstractThis is the first efficient α‐arylation of non‐activated deoxybenzoin derivatives with simple aryl iodides.
ChemInform Abstract: Rhodium‐Catalyzed Allylic Substitution with an Acyl Anion Equivalent: Stereospecific Construction of Acyclic Quaternary Carbon Stereogenic Centers.
Authors: Evans P. Andrew , Oliver Samuel , Chae Jungha 
Published: April 2013

AbstractThis allylic substitution of tertiary allylic carbonates proceeds with high regioselectivity yielding products with quarternary stereocenters while circumventing the problems of conventional enolate alkylation reactions.
ChemInform Abstract: Synthesis and Antibacterial and Antifungal Evaluation of Some Chalcone Based Sulfones and Bisulfones.
Authors: Konduru Naveen Kumar , Dey Sunita , Sajid Mohammad , Owais Mohammad , Ahmed Naseem 
Published: April 2013

AbstractDerivatives (IVb, c) and (VIIb, c) exhibit excellent anti‐fungal activity against C.
ChemInform Abstract: Phenanthrene Synthesis by Eosin Y‐Catalyzed, Visible Light‐Induced [4 + 2] Benzannulation of Biaryldiazonium Salts with Alkynes.
Authors: Xiao Tiebo , Dong Xichang , Tang Yanchi , Zhou Lei 
Published: April 2013

AbstractThe metal‐free, visible light‐induced benzannulation of biaryldiazonium salts with alkynes affords a variety of 9‐substituted or 9,10‐disubstituted phenanthrenes via a cascade radical addition and cyclization sequence in the presence of eosin Y as a photoredox catalyst.
ChemInform Abstract: Organocatalytic Michael Addition of Indanone Carboxylates to Vinyl Selenone for the Asymmetric Synthesis of Polycyclic Pyrrolidines.
Authors: Sternativo Silvia , Walczak Ola , Battistelli Benedetta , Testaferri Lorenzo , Marini Francesca 
Published: April 2013

AbstractQuinidine‐catalyzed reaction of indanone carboxylates with vinyl selenone followed by azidation, cyclization, and reduction allows a highly diastereo‐ and enantioselective access to indenopyrrolidines like (VI) and (IX).
ChemInform Abstract: FeCl3‐Mediated Friedel—Crafts Hydroarylation with Electrophilic N‐Acetyl Indoles for the Synthesis of Benzofuroindolines.
Authors: Beaud Rodolphe , Guillot Regis , Kouklovsky Cyrille , Vincent Guillaume 
Published: April 2013

AbstractThis provides an efficient access towards chromenoindolines and benzofuroindolines, a unique motif in diazonamide, bipleiophylline and azonazine.
ChemInform Abstract: Substitution of Two Fluorine Atoms in a Trifluoromethyl Group: Regioselective Synthesis of 3‐Fluoropyrazoles.
Authors: Fuchibe Kohei , Takahashi Masaki , Ichikawa Junji 
Published: April 2013

AbstractBase‐mediated treatment of 2‐trifluoromethylalkenes with the hydrazines (II) and (IX) results in formation of 1,1‐difluoroalkenes like (III) and (X).
ChemInform Abstract: Silver‐Catalyzed [3 + 2]‐Cycloaddition of Benzynes with Diazocarbonyl Species via a Postulated (1H‐Indazol‐1‐yl)silver Intermediate.
Authors: Wang Chiou‐Dong , Liu Rai‐Shung 
Published: April 2013

AbstractThis method yields substituted indazoles with good chemoselectivity.
ChemInform Abstract: CuI/BF3·Et2O Cocatalyzed Aerobic Dehydrogenative Reactions of Ketones with Benzylamines: Facile Synthesis of Substituted Imidazoles.
Authors: Cai Zhong‐Jian , Wang Shun‐Yi , Ji Shun‐Jun 
Published: April 2013

AbstractHighly substituted imidazoles are synthesized in one step under mild aerobic conditions.
ChemInform Abstract: Synthesis and Evaluation of Antimicrobial Activity of Some New Hetaryl‐Azoles Derivatives Obtained from 2‐Aryl‐4‐methylthiazol‐5‐carbohydrazides and Isonicotinic Acid Hydrazide.
Authors: Tiperciuc Brindusa , Zaharia Valentin , Colosi Ioana , Moldovan Cristina , Crisan Ovidiu , Pirnau Adrian , Vlase Laurian , Duma Mihaela , Oniga Ovidiu 
Published: April 2013

AbstractSome of the synthesized compounds show good antibacterial activity against the Gram positive bacteria S.
ChemInform Abstract: Solvent‐Free and Ionic Liquid Catalyzed Three‐Component Method Synthesis of Spiro‐2‐amino‐4H‐pyrans Derivatives.
Authors: Jin Shuai‐shuai , Guo Hong‐yun 
Published: April 2013

AbstractThe presented environmentally friendly procedure features some distinct advantages such as excellent selectivity, mild reaction conditions, and simple operationality.
ChemInform Abstract: Yb(OTf)3: An Efficient Catalyst for the Synthesis of 11‐Aryl‐7H‐cyclopenta[b][4,7]phenanthrolin‐10(11H)‐one Derivatives
Authors: Du Bai‐Xiang , Yin Ming‐Yue , Zhang Mei‐Mei , Li Yu‐Ling , Wang Xiang‐Shan 
Published: April 2013

Abstractvia three‐component reaction of various aromatic aldehydes (III), quinolin‐6‐amine (I), and cyclopentane‐1,3‐dione (II); (12 examples)
ChemInform Abstract: One‐Pot Synthesis of Furo‐ or Thienoquinolines Through Sequential Imination and Intramolecular Palladium‐Catalyzed Direct Arylation.
Authors: Beydoun Kassem , Doucet Henri 
Published: April 2013

AbstractThe two‐step one‐pot reaction proceeds via in situ generated N‐(2‐haloaryl)‐thiophene‐ or ‐furan imines to afford the corresponding thieno‐ [cf.
ChemInform Abstract: Palladium(0)‐Catalyzed Enantioselective C—H Arylation of Cyclopropanes: Efficient Access to Functionalized Tetrahydroquinolines.
Authors: Saget Tanguy , Cramer Nicolai 
Published: April 2013

AbstractThe reaction proceeds with catalyst loadings as low as 1 mol% and is well suited for gram‐scale reactions.
ChemInform Abstract: Highly Enantioselective [3 + 3] Cycloaddition of Aromatic Azomethine Imines with Cyclopropanes Directed by π—π Stacking Interactions.
Authors: Zhou You‐Yun , Li Jun , Ling Lin , Liao Sai‐Hu , Sun Xiu‐Li , Li Yu‐Xue , Wang Li‐Jia , Tang Yong 
Published: April 2013

AbstractThis method can be used for the kinetic resolution of cyclopropane derivatives.
ChemInform Abstract: Facile Assembly of Two 6‐Membered Fused N‐Heterocyclic Rings: A Rapid Access to Novel Small Molecules via Cu‐Mediated Reaction.
Authors: Adepu Raju , Sunke Rajnikanth , Meda Chandana L. T. , Rambabu D. , Krishna G. Rama , Reddy C. Malla , Deora Girdhar Singh , Parsa Kishore V. L , Pal Manojit 
Published: April 2013

AbstractWith a view to find novel inhibitors of phosphodiesterase‐4, a variety of fused tetra‐ and pentacyclic heterocycles is prepared by Cu‐mediated domino reaction of starting carboxylic esters with nitriles (36 examples).
ChemInform Abstract: Synthesis of Arylselanyl‐1H‐1,2,3‐triazole‐4‐carboxylates by Organocatalytic Cycloaddition of Azidophenyl Arylselenides with β‐Keto‐esters.
Authors: Seus Natalia , Goncalves Loren C. , Deobald Anna M. , Savegnago Lucielli , Alves Diego , Paixao Marcio W. 
Published: April 2013

AbstractThe title reaction allows a mild and efficient access to synthetically and biologically important selenium‐containing triazoles of type (III) and (V).
ChemInform Abstract: Melanogenesis‐Modulating Diketopiperazine Derivatives from Hypocrea spp.
Authors: Kawabata Tetsuro , Uchida Chiaki , Kato Hikaru , Tsubata Tomoyuki , Takano Fumihide , Ohta Tomihisa 
Published: April 2013

AbstractAmong a series of known compounds, a new dioxopiperazine, hypocreasin (I), is isolated from the fungus Hypocrea spp.
ChemInform Abstract: Nuclear Spins as Spies to Explore the Structure of Materials
Authors: Babonneau Florence , Bonhomme Christian , Gervais Christel , Azais Thierry , Laurent Guillaume , Lafon Olivier , Montagne Lionel , Trebosc Julien , Delevoye Laurent , Tricot Gregory , et al. et al. 
Published: April 2013

AbstractReview: 33 refs.
Simplified kinetic model for steam reforming of ethanol on a Ni/Al2O3 catalyst
Authors: Wu Y.‐J. , Santos J.C. , Li Ping , Yu J.‐G. , Cunha A.F. , Rodrigues A.E. 
Published: April 2013

AbstractEthanol steam reforming is a promising method for hydrogen production. Kinetic studies are carried out over a nickel‐based catalyst from 200 to 600°C. A simplified Langmuir–Hinshelwood–Hougen–Watson (LHHW) kinetic model was proposed with nine parameters, where the surface decomposition of methane is assumed as the rate determining step (RDS), and while all other reaction steps are set as reversible. It is postulated that the velocity of the backward reaction step of the dissociative methane adsorption is similar to all other equilibrium reactions proposed, while the forward reaction step is set as the RDS. In addition, the formation of adsorbed carbon species is excluded due to the fact that SRE experiments were performed with excess water, suggesting that OH species, excluding O species formation, stick better on active Ni surface than methane. In addition, a power law kinetic model was used for analysis; the activation energy was 31.8 kJ/mol, and the reaction order of ethanol pressure was 1.52. Experimental results were successfully demonstrated by both kinetic models. The purpose of this work was to develop a simplified mechanistic model to replace empirical models (power rate model) and other proposed kinetic models that are too complex for an applied kinetic process. It was found that the simplified LHHW kinetic model has a better fit than that of the power law model. The proposed kinetic model works well over a wide temperature range (200–600°C).
Theoretical Methods for Ultrafast Spectroscopy
Authors: Marquardt Roberto 
Published: April 2013

AbstractTime‐resolved spectroscopy in the femtosecond and attosecond time domain is a tool to unravel the dynamics of nuclear and electronic motion in molecular systems. Theoretical insight into the underlying physical processes is ideally gained by solving the time‐dependent Schrödinger equation. In this work, methods currently used to solve this equation are reviewed in a compact presentation. These methods involve numerical representations of wavefunctions and operators, the calculation of time evolution operators, the setting up of the Hamiltonian operators and the types of coordinates to be used hereto. The advantages and disadvantages of some methods are discussed.
A Monolayer Assay Tailored to Investigate Lipid–Protein Systems
Authors: Chwastek Grzegorz , Schwille Petra 
Published: April 2013

AbstractModel membrane systems have become invaluable tools to investigate specific features of cellular membranes. Although a variety of different experimental assays does exist, many of them are rather complicated in their preparation and difficult in their practical realisation. Here, we propose a new simple miniaturised monolayer assay that can easily be combined with standard analytical techniques such as confocal fluorescence microscopy and fluorescence correlation spectroscopy (FCS).
Characterizing the Role of Iodine Doping in Improving Photovoltaic Performance of Dye‐Sensitized Hierarchically Structured ZnO Solar Cells
Authors: Zhao Jia‐Xing , Zheng Yan‐Zhen , Lu Xin‐Hong , Chen Jian‐Feng , Tao Xia , Zhou Weilie 
Published: April 2013

AbstractWe report two novel types of hierarchically structured iodine‐doped ZnO (IZnO)‐based dye‐sensitized solar cells (DSCs) using indoline D205 and the ruthenium complex N719 as sensitizers. It was found that iodine doping boosts the efficiencies of D205 IZnO and N719 IZnO DSCs with an enhancement of 20.3 and 17.9 %, respectively, compared to the undoped versions. Transient absorption spectra demonstrated that iodine doping impels an increase in the decay time of IZnO, favoring enhanced exciton life. Mott–Schottky analysis results indicated a negative shift of the flat‐band potential (Vfb) of ZnO, caused by iodine doping, and this shift correlated with the enhancement of the open circuit voltage (Voc). To reveal the effect of iodine doping on the effective separation of e−‐h+ pairs which is responsible for cell efficiency, direct visualization of light‐induced changes in the surface potential between IZnO particles and dye molecules were traced by Kelvin probe force microscopy. We found that potential changes of iodine‐doped ZnO films by irradiation were above one hundred millivolts and thus significantly greater. In order to correlate enhanced cell performance with iodine doping, electrochemical impedance spectroscopy, incident‐photon‐current efficiency, and cyclic voltammetry investigations on IZnO cells were carried out. The results revealed several favorable features of IZnO cells, that is, longer electron lifetime, lower charge‐transfer resistance, stronger peak current, and extended visible light harvest, all of which serve to promote cell performance.