bluuebunny/crossref_metadata_2025_split huggingface dataset:
Sandwichfassaden aus Textilbeton — Numerik und Ingenieurmodelle (Teil 2)
Authors: Hegger Josef , Horstmann Michael 
Published: June 2011

AbstractIm ersten Teil dieses Beitrages [1] wurden experimentelle Untersuchungen an Sandwich fassaden aus Textilbeton vorgestellt. Diese werden durch nichtlineare numerische Simulationen zum Einfluss maßgebender Parameter auf das Tragverhalten von Sandwichquerschnitten ergänzt. Auf Basis von hergeleiteten Ingenieurmodellen, die das Tragverhalten von Sandwichkonstruktionen aus Textilbeton unter Zug‐, Schub‐ und Biegebeanspruchung zutreffend beschreiben, werden zur baupraktischen Anwendung das Biegetragmodell für Beanspruchungen aus Flächenlasten und Temperaturzwang erweitert sowie grund legende Empfehlungen für die Bemessung der Sandwichtragwirkung gegeben.Sandwich facades made of Textile Reinforced Concrete — numerical investigations and engineering models. In part one of this paper [1], experimental investigations on sandwich facades have been presented. They are amended by non‐linear FE‐simulations to identify the influence of major parameters on the load‐bearing behavior of sandwich sections. Based on the derived engineering models describing the load‐bearing behavior of sandwich sections subjected to tensile, shear and bending forces, the model for bending has been supplemented by distributed loads and temperature loads for practical application. Further on, basic recommendations for the design of the sandwich action are stated.
Prediction and postdiction preferences in guessing
Authors: Brun Wibecke , Teigen Karl Halvor 
Published: June 2011

AbstractIn three studies, it is shown that most subjects when asked to guess the outcome of an uncertain event (a die toss, the sex of a child, the winner of a match) will prefer to do so before the event. This holds regardless of consequences of the guess, or of variations in waiting time from the guess being made to the outcome being known. In a chance situation, a guess‐first preference may be partly explained by a ‘magical control’ hypothesis, but the preference persists in situations where such influences are less thinkable (sex of a child, die thrown by another person). When asked how prediction and postdiction guesses differ, most subjects agree that predictions are most exciting, and that postdiction failures cause more discomfort than prediction failures. Such differences are interpreted as due to the relative amount of perceived internal and external uncertainty in the task at hand. It is speculated that internal uncertainty is felt most acceptable when matched by a corresponding external uncertainty, and most aversive when contrasted to an externally established fact.
Risk perception in a simulated industrial purchasing task: The Effects of single versus multi‐play decisions
Authors: Joag Shreekant G. , Mowen John C. , Gentry James W. 
Published: June 2011

AbstractAn experiment was conducted to test hypotheses concerning the impact of single‐play versus multiple‐play decisions made under risk in a simulated industrial purchasing setting. Results revealed that when a decision had multiple plays (e.g., purchase 100 personal computers), decision makers combined probabilities and outcomes to form their risk perceptions in a manner consistent with a multiplicative information integration model. In contrast, when a decision had a single trial (e.g., purchase one large mainframe computer), information was combined in a manner consistent with a non‐multiplicative integration pattern. In addition, when multiple trials of the decision occurred, subjects perceived lower risk than if the decision had a single play, even though the expected values of the decisions were the same. The results were discussed in terms of their relation to the use of expected value analysis as a decision‐making tool and in terms of their implications for industrial and consumer buying behavior.
A Review of research on Groupthink
Authors: Park Won‐Woo 
Published: June 2011

AbstractDespite an extensive use of the groupthink model in various areas of social science, there are few empirical studies testing groupthink and many criticisms of it. In order to better understand the concept of groupthink, and to set a foundation for future research, this paper summarizes previous empirical studies on group‐think and indicates problems (e.g., limited inclusion of variables and an inappropriate usage of measurement modes) that exist throughout those studies. Recommendations for future research are then provided.
Circles and triangles an experimental estimation of indifference lines in the marschak‐machina triangle
Authors: Hey John D. , Cagno Daniela Di 
Published: June 2011

AbstractAn experiment in which 68 subjects are asked 60 pairwise preference questions involving random prospects from 4 Marschak‐Machina Triangles is used to estimate 3 preference functional: Subjective Expected Utility, Difference Regret and Generalized Regret. The Difference Regret formulation fits significantly worse than the other two but Generalized Regret does not appear to fit significantly better than SEU, at least for the majority of the subjects.
Essential fatty acid supplementation of DHA and ARA and effects on neurodevelopment across animal species: a review of the literature
Authors: Davis‐Bruno Karen , Tassinari Melissa S. 
Published: June 2011

AbstractDocosahexanoic acid (DHA) and arachidonic acid (ARA) are long chain essential fatty acids used as supplements in commercial infant formula. DHA/ARA deficient states are associated with adverse neurological outcomes in animals and humans. Preterm infants are at risk for DHA/ARA deficiency. A few clinical reports on the effects of fatty acid supplementation have shown benefit in preterm, low birth weight, and normal infants in the first year of life, whereas others did not. Studies in animals have reported shortened gestation, fetal growth retardation, reduced infant body mass, and increased fetal mortality with consumption of fatty acids during pregnancy. To understand the data that support fatty acid supplementation in infant formula, a review of the animal model literature was undertaken, to examine the effects of DHA/ARA on neurodevelopment, including the effects on visual acuity. Several points emerged from this review. (1) Animal studies indicate that requirements for DHA/ARA vary depending on developmental age. Alterations of the ratio of DHA/ARA can impact developmental outcome. (2) The available studies suggest that while supplementation of DHA/ARA in an appropriate ratio can increase tissue levels of these fatty acids in the brain and retina, tissues sensitive to depletion of fatty acids, the benefit of routine supplementation remains unclear. Few studies measure functional outcome relative to changes in physiologic pools of DHA/ARA after supplementation. (3) Animal literature does not support a clear long‐term benefit of replenishing DHA/ARA tissue levels and administration of these fatty acids at concentrations above those in human milk suggests adverse effects on growth, survival, and neurodevelopment. Birth Defects Res (Part B) 92:240–250, 2011. © 2011 Wiley‐Liss, Inc.
ATP bioluminescence rapid detection of total viable count in soy sauce
Authors: Yan Shou‐Lei , Miao Su‐Na , Deng Shao‐Ya , Zou Min‐Juan , Zhong Fo‐Sheng , Huang Wen‐Biao , Pan Si‐Yi , Wang Qing‐Zhang 
Published: June 2011

ABSTRACTThe adenosine triphosphate (ATP) bioluminescence rapid determination method may be useful for enumerating the total viable count (TVC) in soy sauce, as it has been previously used in food and beverages for sanitation with good precision. However, many factors interfere with the correlation between total aerobic plate counts and ATP bioluminescence. This study investigated these interfering factors, including ingredients of soy sauce and bacteria at different physiological stages. Using the ATP bioluminescence method, TVC was obtained within 4 h, compared to 48 h required for the conventional aerobic plate count (APC) method. Our results also indicated a high correlation coefficient (r = 0.90) between total aerobic plate counts and ATP bioluminescence after filtration and resuscitation with special medium. The limit of quantification of the novel detection method is 100 CFU/mL; there is a good linear correlation between the bioluminescence intensity and TVC in soy sauce in the range 1 × 102–3 × 104 CFU/mL and even wider. The method employed a luminescence recorder (Tristar LB‐941) and 96‐well plates and could analyse 50–100 samples simultaneously at low cost. In this study, we evaluated and eliminated the interfering factors and made the ATP bioluminescence rapid method available for enumerating TVC in soy sauce. Copyright © 2011 John Wiley & Sons, Ltd.
Toxizität der Dioxine. Ultragifte oder Panikmache?
Authors: Schrenk Dieter 
Published: June 2011

AbstractDioxine sind chlororganische Verbindungen mit hoher Persistenz in der Umwelt. Sie finden sich in der Nahrung, im Blut und der Muttemilch. Zu den toxischen Wirkungen an Versuchstieren zählen, nach entprechender Dosierung, Störungen des Immunsystems, der hormonellen Steuerung, Entwicklungsstörungen und Tumoren. Beim Menschen ist v.a. eine schwer heilende Form der Akne, die so genannte Chlorakne, beschrieben. Die Toxizität der Dioxine beruht auf der Aktivierung des Dioxin‐ oder Arylhydrocarbon‐Rezeptors, dessen eigentliche biologische Funktion noch ungeklärt ist.
Neues zur Wiederentdeckung der Mendelschen Regeln
Authors: Simunek Michal , Hoßfeld Uwe 
Published: June 2011

AbstractAngesichts neuer Archivfunde muss die frühe Geschichte der Genetik, insbesondere die tradierte Geschichte von der “Wiederentdeckung” der Vererbungsgesetze Mendels um einige Facetten ergänzt beziehungsweise erweitert werden.
Nahrungnetze: eine Zunahme an Seetang – und die Folgen
Authors: Sander Johannes 
Published: June 2011

AbstractÖkosysteme beherbergen zahlreiche Spezies, die auf vielfältige Weise in Wechselwirkung treten. Diese Wechselwirkungen hängen von der räumlichen und zeitlichen Verteilung der Organismen ab und können durch Einflüsse der Umgebung massiv beeinflusst werden. Ein Beispiel hierfür liefern Änderungen bei der Menge an angeschwemmtem Seetang auf karibischen Inseln.
A writing‐intensive, methods‐based laboratory course for undergraduates
Authors: Colabroy Keri L. 
Published: June 2011

AbstractEngaging undergraduate students in designing and executing original research should not only be accompanied by technique training but also intentional instruction in the critical analysis and writing of scientific literature. The course described here takes a rigorous approach to scientific reading and writing using primary literature as the model while simultaneously integrating laboratory instruction on basic enzyme purification and characterization, followed by 6 weeks of laboratory dedicated to student‐designed original research projects. In the preparation and execution of their original projects, students engage in analysis of the primary literature, proposal writing, peer review, manuscript preparation, and oral presentation. The result is a comprehensive and challenging course that teaches third‐ and fourth‐year undergraduates what it means to “think and work like a scientist.” Biochemistry and Molecular Biology Education Vol. 39, No. 3, pp. 196–203, 2011
HarmoSim: A tool for harmonic distortion simulation and assessment of nonlinear loads
Authors: Baptista J. , Morais R. , Valente A. , Soares S. , Candeias M. , Reis M.J.C.S. 
Published: June 2011

ABSTRACTElectrical power quality (PQ) is a crucial competitive and developing factor to all economic activities. The economic impact resulting from a bad PQ would be drastic on all consumers. Computers, uninterruptible and switched power supplies (UPS), and fluorescent lamps/tubes are examples of nonlinear loads that have the consumption of a nonsinusoidal current, which cause disturbances in the power supply system (that may be severe or not). This study discusses residential generic power circuitry analysis and simulation, under nonlinear loads, in connection with undergraduate electrical engineering education. It briefly reviews some of the basic techniques, and presents a software tool that has been found to be very useful in the context. The tool has an easy‐to‐use, friendly interface, and can be used to teach design techniques or as a laboratory support to study the applicability of known methods to real situations. The students can perform simulations with their own data on Microsoft™ Windows®‐based platforms. © 2011 Wiley Periodicals, Inc. Comput Appl Eng Educ 22:340–348, 2014; View this article online at wileyonlinelibrary.com/journal/cae; DOI 10.1002/cae.20559
Advanced Electron Microscopy of Metal–Support Interactions in Supported Metal Catalysts
Authors: Liu Jingyue (Jimmy) 
Published: June 2011

AbstractElectron microscopy and its associated techniques have contributed significantly to the characterization of heterogeneous catalysts, especially supported metal catalysts, and can provide nano‐ or atomic‐scale information on the structure, morphology, composition, and electronic state of the area of interest. With the recent advancement in aberration corrections to achieve an image resolution below 0.1 nm and the rapid development of in situ techniques, advanced electron microscopy is poised to probe fundamental questions of heterogeneous catalysis and catalysts. Understanding the nature of metal–support interactions becomes critical if we want to achieve the goal of designing and fabricating nanoarchitectured catalysts with desired performances. To reliably probe the fundamental mechanisms of charge transfer, which is the core of catalysis, between individual nanoscale components and under a realistic gas environment and temperature is still a formidable challenge. This Review discusses the recent contribution of advanced electron microscopy to the study of metal–support interactions, as well as the challenges and opportunities of applying aberration‐corrected electron microscopy techniques to the investigation of atomic‐scale structures of complex heterogeneous catalysts.
Rational Design of Zinc–Organic Coordination Polymers Directed by N‐Donor Co‐ligands
Authors: Wang Sujing , Xiong Shunshun , Wang Zhiyong , Du Jiangfeng 
Published: June 2011

AbstractA family of ZnII‐based metal–organic coordination polymers (MOCPs) [Zn(L)(imid)2] (1), [Zn(L)(2,2′‐bpy)] (2), [Zn2(L)2(Py)3] (3), [Zn(L)(DPP)]⋅DMF (4), [Zn(L)(DPEA)] (5), [Zn2(L)2(4,4′‐bpy)] (6), [Zn(L)(3,4′‐DPEE)]⋅DMF (7), and [Zn3(L)3(3,4′‐DPEE)2]⋅DMF (8) (L=dithieno[3,2‐b:2′,3′‐e]benzene‐2,6‐dicarboxylic acid, imid=imidazole, bpy=bipyridine, Py=pyridine, DPP=1,3‐di(pyridin‐4‐yl)propane, DPEA=1,2‐di(pyridin‐4‐yl)ethane, and DPEE=(E)‐3,4′‐(ethene‐1,2‐diyl)dipyridine) have been rationally designed and generated in the solvothermal reaction systems of the new conjugated thiophene derivative L, Zn(ClO4)2⋅6 H2O, and seven different aromatic N‐donor co‐ligands separately. These N‐donor compounds were carefully selected and employed in the crystal preparation of the eight MOCPs as structure‐directing co‐ligands owing to their structural specialties and habitual coordination fashions. Among these MOCPs, compounds 1–3 are 1D polymers with different chain structures. Compounds 4, 7, and 8 are 2D structures, in which 4 has two sets of twofold interpenetrating layers, whereas 7 and 8 are both built from three independent sheets. Compounds 5 and 6 are 3D frameworks, in which 5 exhibits a fivefold interpenetrating diamondoid network, whereas 6 shows a typical twofold interpenetrating pillared layer structure with nanoscale channels. The photoluminescent properties of these MOCPs, including excitation, emission, and radiactive lifetime, have also been investigated to help us tentatively understand their structure–property relationships.
“Deconvoluted Fullerene” Derivatives: Synthesis and Characterization
Authors: Brunetti Fulvio G. , Varotto Alessandro , Batara Nicolas A. , Wudl Fred 
Published: June 2011

AbstractWe have designed the synthesis of “deconvoluted fullerene” derivatives that present an ordered pattern of hexagons and pentagons in the backbone of the molecule. We not only mimicked the fullerene structure in dihedral planes, but also preserved its electron accepting behavior and enlarged its optical absorption. Moreover, very preliminary photoluminescence (PL) quenching experiments also confirmed the potentiality of these materials as acceptors in the field of organic photovoltaics (OPV)s. A brief discussion of the surface morphology, based on AFM analysis, is also presented.
ChemInform Abstract: Structure and 31P NMR Spectroscopy of a New Phosphate, Na8Ca1.5Mg12.5 (PO4)12.
Authors: Jerbi Hasna , Hidouri Mourad , Rzeigui Mohamed , Ben Amara Mongi 
Published: June 2011

AbstractThe new title compound is synthesized by reaction of NH4H2PO4, Na2CO3, CaCO3, and MgCO3 in a flux of Na2MoO4 (Pt crucible, 673 K for 24 h, 873 K for 12 h, and 1273 K for 2 h).
ChemInform Abstract: Complete Titanium Substitution by Boron in a Tetragonal Prism: Exploring the Complex Boride Series Ti3‐xRu5‐yIryB2+x (0 ≤ x ≤ 1 and 1 < y < 3) by Experiment and Theory.
Authors: Fokwa Boniface P. T. , Hermus Martin 
Published: June 2011

AbstractSingle crystals of Ti3Ru2.9Ir2.1B2, Ti2.63Ru3.4Ir1.6B2.37, Ti2.27Ru2.5Ir2.5B2.73, and Ti2Ru2.8Ir2.2B3 are prepared by arc melting of the elements (copper crucible, Ar atmosphere).
ChemInform Abstract: Microwave‐Assisted Solvothermal Synthesis and Characterization of Metastable LiFe1‐x(VO)xPO4 Cathodes.
Authors: Harrison Katharine L. , Manthiram Arumugam 
Published: June 2011

AbstractThe title compounds (0 ≤ x ≤ 0.25 and x = 1) are synthesized from a stoichiometric mixture of LiOH, Fe(OAc)2, VO(OiPr)3, and H3PO4 in tetraethylene glycol (microwaves, 260 °C, 5—10 min).
ChemInform Abstract: Ammonium Octahydrotriborate (NH4B3H8): New Synthesis, Structure, and Hydrolytic Hydrogen Release.
Authors: Huang Zhenguo , Chen Xuenian , Yisgedu Teshome , Meyers Edward A. , Shore Sheldon G. , Zhao Ji‐Cheng 
Published: June 2011

AbstractThe title compound is prepared by a metathesis reaction between unsolvated NaB3H8 and NH4Cl in liquid ammonia at ‐78 °C (30 min, 95% yield).
ChemInform Abstract: Efficient One‐to‐One Coupling of Easily Available 1,3‐Dienes with Carbon Dioxide.
Authors: Takaya Jun , Sasano Kota , Iwasawa Nobuharu 
Published: June 2011

AbstractThe reaction is efficiently catalyzed by the PSiP‐pincer‐type palladium catalyst and proceeds stereoselectively even when isomeric mixtures are used as substrates.
ChemInform Abstract: Highly Chemo‐ and Regioselective Transfer Reduction of Aromatic Nitro Compounds Using Ammonium Formate Catalyzed by Supported Gold Nanoparticles.
Authors: Lou Xia‐Bing , He Lin , Qian Yue , Liu Yong‐Mei , Cao Yong , Fan Kang‐Nian 
Published: June 2011

AbstractTransfer hydrogenation of aromatic nitro compounds (I) proceeds smoothly in the system ammonium formate—TiO2‐supported Au(I) particles to give the corresponding amines (II).
ChemInform Abstract: General and Highly α‐Regioselective Zinc‐Mediated Prenylation of Aldehydes and Ketones.
Authors: Zhao Li‐Ming , Jin Hai‐Shan , Wan Li‐Jing , Zhang Li‐Ming 
Published: June 2011

AbstractTreatment of aldehydes and ketones with prenyl bromide under conditions A) allows facile, efficient, and general access to α‐prenylated alcohols.
ChemInform Abstract: Contemporaneous Dual Catalysis by Coupling Highly Transient Nucleophilic and Electrophilic Intermediates Generated in situ.
Authors: Trost Barry M. , Luan Xinjun 
Published: June 2011

Abstractα‐Allylated α,β‐unsaturated ketones are prepared from allylic carbonates and propargyl alcohols in the presence of an optimized ratio of a vanadium and a palladium catalyst.
ChemInform Abstract: New Synthetic Strategy for High‐Enantiopurity N‐Protected α‐Amino Ketones and Their Derivatives by Asymmetric Hydrogenation.
Authors: Sun Tian , Hou Guohua , Ma Miaofeng , Zhang Xumu 
Published: June 2011

AbstractThe Rh—DuanPhos catalyzed asymmetric hydrogenation of α‐amino‐α‐methylene ketones (I) and (IV) provides a novel efficient access towards enantioenriched α‐amino ketones (II) and (V), important precursors of amphetamine synthesis.
ChemInform Abstract: Highly Efficient Redox Isomerization of Allylic Alcohols and Transfer Hydrogenation of Ketones and Aldehydes Catalyzed by Ruthenium Complexes.
Authors: Liu Pei Nian , Ju Kun Dong , Lau Chak Po 
Published: June 2011

AbstractA Ru(II)—dichlorobipyridine complex (Ia) efficiently catalyzes the redox isomerization of terminal and internal allylic alcohols to give the corresponding ketones, e.g. (III), (V) or (VII), in high to excellent conversion.
ChemInform Abstract: Copper(I)‐Mediated Cyanation of Boronic Acids.
Authors: Zhang Guoying , Zhang Lingli , Hu Maolin , Cheng Jiang 
Published: June 2011

AbstractA wide range of aryl‐ and alkenylboronic acids (I), (V) and esters like (VII) smoothly undergo cyanation with copper(I) cyanide.
ChemInform Abstract: Rhodium(II)‐Catalyzed Cross‐Coupling of Diazo Compounds.
Authors: Hansen Joern H. , Parr Brendan T. , Pelphrey Philip , Jin Quihui , Autschbach Jochen , Davies Huw M. L. 
Published: June 2011

AbstractTrisubstituted alkenes are efficiently synthesized by a selective cross‐coupling.
ChemInform Abstract: Silica Supported Perchloric Acid: A Convenient and Environmentally Friendly Catalyst for the One‐Pot Multicomponent Synthesis of β‐Acetamido Ketones.
Authors: Nasr‐Esfahani Masoud , Montazerozohori Morteza , Gholampour Tahere 
Published: June 2011

AbstractA modified Dakin‐West condensation is promoted by silica‐supported perchloric acid as an inexpensive and recyclable catalyst.
ChemInform Abstract: Rh‐Catalyzed Carbonylation of Arylzinc Compounds Yielding Symmetrical Diaryl Ketones by the Assistance of Oxidizing Agents.
Authors: Kobayashi Kana , Nishimura Yugo , Gao Fuxing , Gotoh Kazuma , Nishihara Yasushi , Takagi Kentaro 
Published: June 2011

AbstractIt provides a highly efficient method to prepare symmetrical diaryl ketones.
ChemInform Abstract: The Direct Asymmetric Vinylogous Aldol Reaction of Furanones with α‐Ketoesters: Access to Chiral γ‐Butenolides and Glycerol Derivatives.
Authors: Luo Jie , Wang Haifei , Han Xiao , Xu Li‐Wen , Kwiatkowski Jacek , Huang Kuo‐Wei , Lu Yixin 
Published: June 2011

AbstractVarious γ‐butenolides (III) are prepared in the presence of a tryptophan‐derived bifunctional catalyst.
ChemInform Abstract: Carbon‐Based Solid Acid as an Efficient and Reusable Catalyst for One‐Pot Synthesis of Tetrasubstituted Imidazoles under Solvent‐Free Conditions.
Authors: Tavakoli‐Hoseini Niloofar , Davoodnia Abolghasem 
Published: June 2011

AbstractA new application for carbon‐based solid acid catalysts in organic synthesis is described.
ChemInform Abstract: Guanidine Organocatalyst for the Asymmetric Mannich‐Type Reaction Between α‐Isothiocyanato Imide and Sulfonyl Imines.
Authors: Chen Xiaohong , Dong Shunxi , Qiao Zhen , Zhu Yin , Xie Mingsheng , Lin Lili , Liu Xiaohua , Feng Xiaoming 
Published: June 2011

AbstractThe catalyst in combination with p‐cyanobenzoic acid affords thioxo‐1‐tosylimidazolidine derivatives with high yields and stereoselectivities.
ChemInform Abstract: A Novel Multicomponent Approach to the Synthesis of 1,3‐Thiazolidine‐2‐thiones.
Authors: Alizadeh Abdolali , Zohreh Nasrin , Sabahnoo Hamideh , Noaparast Zohreh 
Published: June 2011

AbstractA variety of the target compounds is prepared as the E/Z‐mixtures with moderate selectivities.
ChemInform Abstract: A Facile, One‐Pot, Green Synthesis of Polysubstituted 4H‐Pyrans via Piperidine‐Catalyzed Three‐Component Condensation in Aqueous Medium.
Authors: Lu Guo‐Ping , Cai Chun 
Published: June 2011

AbstractThe efficient presented method for the synthesis of the title compounds can be easily applied for large‐scale reactions.
ChemInform Abstract: Synthesis and Antimicrobial Activity of Novel 2‐(Aryl)‐3‐ [5‐(2‐oxo‐2H‐3‐chromenyl)‐1,3‐oxazol‐2‐yl]‐1,3‐thiazolan‐4‐ones.
Authors: Reddy Ch. Sanjeeva , Devi M. Vani , Kumar G. Rajesh , Rao L. Sanjeeva , Nagaraj A. 
Published: June 2011

AbstractThe title compounds (VI) are tested for their antibacterial activity against the Gram‐positive bacteria B.