bluuebunny/crossref_metadata_2025_split huggingface dataset:
Multi‐parameter multi‐physics ensemble (MPMPE): a new approach exploring the uncertainties of climate sensitivity
Authors: Shiogama Hideo , Watanabe Masahiro , Ogura Tomoo , Yokohata Tokuta , Kimoto Masahide 
Published: November 2013

AbstractTo explore both the parametric and structural uncertainties of climate sensitivity (CS), we have proposed a new general circulation model (GCM) ensemble termed the multi‐parameter multi‐physics ensemble (MPMPE). We used eight multi‐physics ensemble (MPE) models in which the MIROC5 physics schemes were replaced by those of MIROC3. MPMPE consisted of perturbed‐physics ensembles in which the parameter values were swept for each MPE model. MPMPE resulted in a wide range of CS, which was related to the shortwave cloud feedback (SWcld). Coupling between low‐ and mid‐level clouds controlled the differences in the parametric spread of SWcld among the MPE models.
Effects of yeast immobilization on bioethanol production
Authors: Borovikova Diana , Scherbaka Rita , Patmalnieks Aloizijs , Rapoport Alexander 
Published: November 2013

AbstractThe current study evaluated a newer method, which includes a dehydration step, of immobilizing Saccharomyces cerevisiae L‐77 and S. cerevisiae L‐73 onto hydroxylapatite and chamotte ceramic supports. The efficiency of cell immobilization on chamotte was significantly higher than hydroxylapatite. Immobilized yeast preparations were investigated for their ethanol‐producing capabilities. The glucose concentration in a fermentation medium was 100 mg/mL. Immobilized preparations produced the same amount of ethanol (48 ± 0.5 mg/mL) as free cells after 36 H of fermentation. During the early stages of fermentation, immobilized yeast cells produced ethanol at a higher rate than free cells. Yeast preparations immobilized on both supports (hydroxylapatite and chamotte) were successfully used in six sequential batch fermentations without any loss of activity. The chamotte support was more stable in the fermentation medium during these six cycles of ethanol production. In addition to the high level of ethanol produced by cells immobilized on chamotte, the stability of this support and its low cost make it a promising material for biotechnologies associated with ethanol production.
Baugrubenverbauten – Nomogramme zur Bestimmung der statisch erforderlichen Einbindetiefe nach dem EC 7
Authors: Adams Markus , Ziegler Martin 
Published: November 2013

AbstractInfolge der Einführung des EC 7 und dem damit verbundenen Wechsel vom Global‐ auf das Teilsicherheitskonzept ist das bewährte Hilfsmittel der Nomogramme nach Blum [1] zur vereinfachten Bestimmung der statisch erforderlichen Einbindetiefe von geschlossenen Baugrubenverbauten, wie zum Beispiel Spund‐, Bohrpfahl‐ oder Schlitzwänden, nicht mehr anwendbar. Daher wurden am Lehrstuhl für Geotechnik im Bauwesen der RWTH Aachen für drei unterschiedliche statische Systeme neue, auf dem Teilsicherheitskonzept beruhende Nomogramme hergeleitet.Building pit wall – nomograms for estimating the statically required embedmentDue to the introduction of the EC 7 and the change from the global safety concept to the partial safety concept, the established and well‐known nomograms of Blum [1] for a simplified estimation of the embedment depth of sheet pile walls are no longer valid. Hence, new nomograms for three different static boundary conditions based on the partial safety concept have been derived at the “Institute of Geotechnical Engineering” of RWTH Aachen University.
Digitale Photogrammetrie in der Bautechnik
Authors: Jesse Frank , Kutzner Tobias 
Published: November 2013

AbstractDie digitale Nahbereichsphotogrammetrie ermöglicht die berührungslose Erfassung von Verformungen, Rissen und anderen Schädigungen bei experimentellen Untersuchungen von Baustoffen, Bauteilen und Baukonstruktionen. Bei Beton bzw. Stahlbeton sind die zu beobachtenden Dehnungen (ca. 3, 5 ‰ Druckbruchdehnung, ca. 0,1 ‰ Zugbruchdehnung) und Rissbreiten (ab 0,05 mm) im Vergleich zu anderen Materialien sehr klein. Bei Betonbauteilen wird die digitale Nahbereichsphotogrammetrie daher oft an der Leistungsgrenze betrieben. Dann entscheidet die optimale Wahl maßgebender Systemparameter darüber, ob die Messaufgabe mit hinreichender Genauigkeit durchgeführt werden kann. In einer systematischen Studie zu maßgebenden Systemparametern wurden Einflussgrößen und Abhängigkeiten mit einer üblichen Photogrammetrieanlage untersucht. Zu den untersuchten Systemparametern zählen Parameter der Bildaufnahme – wie Signalisierung, Beleuchtung, Belichtung, Bildrate, Objektposition – und Parameter der Bildauswertung – wie Größe, Anzahl und Position der Facetten. Wesentliche Ergebnisse werden vorgestellt und diskutiert. Daraus werden Empfehlungen für Systemparameter beim praktischen Einsatz, erreichbare Messgenauigkeit und Hinweise zu Anwendungsgrenzen abgeleitet.Digital photogrammetry in construction engineering – Influence of major system parameters and accuracy potential in applicationsDigital close range photogrammetry enables non‐contact acquisition of deformations, cracks and other damages from materials, members and building constructions. Strains of concrete and reinforced concrete (ca. 3,5 ‰ ultimate compression strain, ca. 0,1 ‰ ultimate tension strain) and crack widths (from 0,05 mm) are very small compared to other materials. Thus, digital close range photogrammetry often operates on its limits when being applied to concrete structures. The optimal choice of major system parameters decides whether measurements can be accomplished with sufficient accuracy. In a systematic study of relevant system parameters influences and interdependencies were investigated by means of conventional digital photogrammetry equipment. System parameters studied include both the image acquisition process – such as signaling, lighting, exposure, frame rate, object location – and the image analysis parameters – such as size, number and position of facets. Key results are presented and discussed. Finally, recommendations are derived for system parameters in practical application and application limits.
Schwingungsmonitoring an Generatoren
Authors: Bluhm Ján , Bluhm Roman 
Published: November 2013

AbstractDer Bau des Gas‐ und Dampfturbinen (GuD)‐Kraftwerkes in Sur ist das größte Energieprojekt im Oman. Mit der Inbetriebnahme werden die Gas‐ und Dampfturbinen der neuesten Generation eine Kapazität von 2 000 MW liefern. Für Fundamente von ausgewählten Gasturbinen‐Generator‐Sätzen wurden alle statischen und dynamischen Ausführungsunterlagen auf Vollständigkeit und Plausibilität geprüft. Im Ergebnis dieser Unterlagenprüfung wurde empfohlen, zerstörungsfreie Untersuchungen zur Verifizierung der Bewehrungslage durchzuführen und Schwingungsmessungen nach ISO 10816 auszuführen. Diese Schwingungsmessungen sollen Amplituden und Frequenzen am Fundament und an den Hauptlagern des Generatorschaftes während der Test‐ und Betriebsphase aufzeichnen, sodass ein Vergleich mit den Angaben des Maschinenherstellers möglich ist und die Betriebstauglichkeit gewährleistet werden kann. Hierzu wurde ein modernes Schwingungsmesssystem installiert, welches den Zugriff per Webbrowser erlaubt, sodass die Überwachung und Begutachtung aus Deutschland sicher und komfortabel erfolgen kann.Vibration monitoring of generators – Combined cycle power plant in Sur (Oman)The construction of the combined cycle power plant (CCPP) in Sur is the largest energy project in Oman. With the commissioning of the gas and steam turbines of the latest generation a capacity of 2000 MW will be delivered. For foundations of selected gas turbine generator sets, all static and dynamic design documents were reviewed for completeness and plausibility. As a result of this document examination, non‐destructive tests to verify the reinforcement layer and vibration measurements according to ISO 10816 have been recommended. These vibration measurements should record amplitudes and frequencies at the foundation and at main bearing points of the generator shaft during the testing and operational phases. This allows the comparison with vendor's requirements and to ensure serviceability. For this purpose, a modern vibration measurement system was installed, which allows access via a web browser, so that the monitoring and evaluation can take place safely and comfortably from Germany.
Observed Variability and Values Matter: Toward a Better Understanding of Information Search and Decisions from Experience
Authors: Mehlhorn Katja , Ben‐Asher Noam , Dutt Varun , Gonzalez Cleotilde 
Published: November 2013

ABSTRACTThe search for different options before making a consequential choice is a central aspect of many important decisions, such as mate selection or purchasing a house. Despite its importance, surprisingly little is known about how search and choice are affected by the observed and objective properties of the decision problem. Here, we analyze the effects of two key properties in a binary choice task: the options' observed and objective values, and the variability of payoffs. First, in a large public data set of a binary choice task, we investigate how the observed value and variability relate to decision‐makers' efforts and preferences during search. Furthermore, we test how these properties influence the chance of correctly identifying the objectively maximizing option, and how they affect choice. Second, we designed a novel experiment to systematically analyze the role of the objective difference between the options. We find that a larger objective difference between options increases the chance for correctly identifying the maximizing option, but it does not affect behavior during search and choice. Copyright © 2013 John Wiley & Sons, Ltd.
Formvariationen von Druckgliedern
Authors: Schmidt Angela , Curbach Manfred , Henke Michael , Fischer Oliver 
Published: November 2013

AbstractIn zwei Teilprojekten des von der Deutschen Forschungsgemeinschaft (DFG) geförderten Schwerpunktprogramms 1542 “Leicht Bauen mit Beton” werden Formfindungen von Stabstrukturen und Stützen gemäß des Prinzips “form follows force” vorgenommen. In dem Artikel wird auf die erhaltenen kraftflussgerechten Geometrien bei einem maßgebenden Stabilitätsversagen und geometrisch linearer Betrachtung für verschiedene Lagerungsfälle unter zentrischem Druck eingegangen. Die Formfindungen wurden in beiden Teilprojekten mit unterschiedlichen Vorgehensweisen vorgenommen. Die jeweiligen Methoden werden erläutert und diskutiert. Bei der Formermittlung wird sowohl eine Variation der Grundgeometrie im Querschnitt als auch der Form in Längsrichtung betrachtet. Es wird außerdem ein Einblick in frühere Untersuchungen zu dieser Thematik gegeben, deren Anfänge weit zurückreichen. Abschließend wird eine ästhetisch ansprechendere Formidee für Stützen vorgestellt.Form variations of compression membersIn two subprojects of the Priority Programme 1542 “Concrete light”, which is funded by the German Research Foundation (DFG), form findings of strut and tie‐models and columns according to the principle “form follows force” were conducted. The article discusses the results of geometries, which are aligned with the direction of forces for a definite stability failure and different bearings. The form findings were taken with different procedures in both subprojects. The referring methods are explained and discussed in the following text. For the form finding a variation of the cross section as well as a variation of the form in longitudinal direction was analysed. Furthermore an insight in early researches to this topic, which began a long time ago, is given. After all, an aesthetic shape idea of the column geometry is considered.
Non‐Standard Fügeprinzipien für leichte Bauteile aus UHPFRC
Authors: Mainka Jeldrik , Lehmberg Sven , Budelmann Harald , Kloft Harald 
Published: November 2013

AbstractTrotz der enormen Entwicklungen in der digitalen Planung und Fertigung wird unser Denken im Bauwesen immer noch vom Standard der industriellen Fertigung geprägt. Die aus Stahl und Holz produzierten Profile und Halbzeuge, ebenso wie die marktüblichen Schalungssysteme für Betonbauteile, implizieren eine möglichst einfache Geometrie und Fügung. Demzufolge sind heutige Tragkonstruktionen meistens aus biegebeanspruchten, masseintensiven Bauteilen zusammengesetzt. Leichte formaktive Tragwerke, wie beispielsweise die 1972 erbaute Lufthansa Wartungshalle V am Frankfurter Flughafen, sind dagegen kaum noch zu finden. In Zukunft wird dem effizienten Einsatz von Material und Energie eine entscheidende Bedeutung für die Umsetzung einer nachhaltigen Bauwirtschaft zukommen. Statt Komplexität auf Kosten erhöhter Massen zu vermeiden, wird es zukünftig vielmehr darum gehen, Material durch strukturelle Effizienz einzusparen. Die Chance hierzu liegt in der Zusammenführung der neuesten Entwicklungen im Bereich der Materialtechnologie mit denen der digitalen Planung und Fertigung. Ziel muss es sein, für high‐tech‐Werkstoffe – wie ultrahochfestem Stahlfaserbeton (UHPFRC) – dem Material angemessene Non‐Standard Fügeprinzipien zu entwickeln, die trotz gestiegener Komplexität wirtschaftlich zu fertigen sind. Hier setzt der vorliegende Beitrag an und zeigt aktuelle Forschungsergebnisse zu innovativen Fügeprinzipien für leichte Bauteile aus UHPFRC.Non‐standard principles for joining lightweight members made from UHPFRCDespite the enormous developments in digital design and fabrication methods our thinking in the construction industry is still dominated by the standard of industrial production. The profiles and semi‐manufactured parts made from steel and wood as well as the on the market available formwork systems for concrete structures imply the simplest possible geometry and addition. Consequently, today's load‐bearing structures are usually composed of bending stress mass‐intensive components. Lightweight form‐active structures such as built in 1972 Lufthansa Maintenance Hall V at Frankfurt airport, however, are hard to find. In the future, the efficient use of materials and energy will have a crucial importance for the implementation of sustainable construction. Instead of avoiding complexity at the cost of increased masses, the goal for the future will be to save mass by using structural efficiency. The opportunity for this lies in the combination of the latest developments in material technology with the digital planning and production. The aim for high‐tech materials such as ultra high performance fibre reinforced concrete (UHPFRC) must be to develop material appropriate non‐standard joint principles that are produced economically despite increased complexity. This is where the present contribution starts showing the current research results for innovative principles for joining lightweight members from UHPFRC.
BippyPhos: A Single Ligand With Unprecedented Scope in the Buchwald–Hartwig Amination of (Hetero)aryl Chlorides
Authors: Crawford Sarah M. , Lavery Christopher B. , Stradiotto Mark 
Published: November 2013

AbstractOver the past two decades, considerable attention has been given to the development of new ligands for the palladium‐catalyzed arylation of amines and related NH‐containing substrates (i.e., Buchwald–Hartwig amination). The generation of structurally diverse ligands, by research groups in both academia and industry, has facilitated the accommodation of sterically and electronically divergent substrates including ammonia, hydrazine, amines, amides, and NH heterocycles. Despite these achievements, problems with catalyst generality persist and access to multiple ligands is necessary to accommodate all of these NH‐containing substrates. In our quest to address this significant limitation we identified the BippyPhos/[Pd(cinnamyl)Cl]2 catalyst system as being capable of catalyzing the amination of a variety of functionalized (hetero)aryl chlorides, as well as bromides and tosylates, at moderate to low catalyst loadings. The successful transformations described herein include primary and secondary amines, NH heterocycles, amides, ammonia and hydrazine, thus demonstrating the largest scope in the NH‐containing coupling partner reported for a single Pd/ligand catalyst system. We also established BippyPhos/[Pd(cinnamyl)Cl]2 as exhibiting the broadest demonstrated substrate scope for metal‐catalyzed cross‐coupling of (hetero)aryl chlorides with NH indoles. Furthermore, the remarkable ability of BippyPhos/[Pd(cinnamyl)Cl]2 to catalyze both the selective monoarylation of ammonia and the N‐arylation of indoles was exploited in the development of a new one‐pot, two‐step synthesis of N‐aryl heterocycles from ammonia, ortho‐alkynylhalo(hetero)arenes and (hetero) aryl halides through tandem N‐arylation/hydroamination reactions. Although the scope in the NH‐containing coupling partner is broad, BippyPhos/[Pd(cinnamyl)Cl]2 also displays a marked selectivity profile that was exploited in the chemoselective monoarylation of substrates featuring two chemically distinct NH‐containing moieties.
Asymmetric α‐Hydroxylation of Tetralone‐Derived β‐Ketoesters by Using a Guanidine–Urea Bifunctional Organocatalyst in the Presence of Cumene Hydroperoxide
Authors: Odagi Minami , Furukori Kota , Watanabe Tatsuya , Nagasawa Kazuo 
Published: November 2013

AbstractHighly enantioselective catalytic oxidation of 1‐tetralone‐derived β‐keto esters was achieved by using a guanidine–urea bifunctional organocatalyst in the presence of cumene hydroperoxide (CHP), a safe, commercially available oxidant. The α‐hydroxylation products were obtained in 99 % yield with up to 95 % enantiomeric excess (ee). The present oxidation was successfully applied to synthesize a key intermediate of the anti‐cancer agent daunorubicin (2).
ChemInform Abstract: A Polyoxometalate Containing Circular {P5W30} Units and Cubic {Cu4} Clusters.
Authors: Huang Ling , Cheng Lin , Wang Sa‐Sa , Fang Wei‐Hui , Yang Guo‐Yu 
Published: November 2013

Abstract[Cu(en)2]4[Cu(H2O)3] {[(en)4Cu4(μ3‐OH)3 (μ‐H2O)] 2 (H5P5W30O110) 2}·12H2O is hydrothermally synthesized from aqueous solutions of Cu(OAc)2 and K14NaP5W30O110 in the presence of 1,2‐diaminopropane and HClO4 (autoclave, 140 °C, 5 d, 41% yield).
ChemInform Abstract: Synthesis of New Mono‐N‐tosylated Diamine Ligands Based on (R)‐(+)‐Limonene and Their Application in Asymmetric Transfer Hydrogenation of Ketones and Imines.
Authors: Roszkowski Piotr , Maurin Jan K. , Czarnocki Zbigniew 
Published: November 2013

AbstractRuthenium catalysts (I) with chiral diamine ligands are successfully applied to the asymmetric transfer hydrogenation of ketones, imines, and iminium salts.
ChemInform Abstract: Influence of Norbornanone Substituents on Both the Wagner—Meerwein Skeletal Rearrangements under Sulfonation Conditions and the Diastereoselectivity of the Corresponding N,N′‐Bis‐fumaroyl Sultams in Uncatalyzed Diels—Alder Cycloadditions to Cyclopenta‐1,3‐diene.
Authors: Piatek Anna , Chapuis Christian 
Published: November 2013

AbstractThe Wagner—Meerwein domino rearrangement of norbornane skeletons under sulfonation conditions is strongly influenced by the absence of a gem‐dimethyl moiety at C(7).
ChemInform Abstract: Concise Synthesis of Oxindole Derivatives Bearing a 3‐Trifluoroethyl Group: Copper‐Catalyzed Trifluoromethylation of Acryloanilides.
Authors: Egami Hiromichi , Shimizu Ryo , Sodeoka Mikiko 
Published: November 2013

AbstractThe combination of CuI and Togni′s reagent (II) affords oxindole derivatives bearing a 3‐trifluoroethyl group in high yields under mild conditions that are compatible with various functional groups.
ChemInform Abstract: Synthesis of Enantiopure Fluorohydrins Using Alcohol Dehydrogenases at High Substrate Concentrations.
Authors: Borzecka Wioleta , Lavandera Ivan , Gotor Vicente 
Published: November 2013

AbstractIt is shown that different alcohol dehydrogenases can be used to synthesize both alcohol antipodes in an enantiopure form by reduction of α‐fluoro ketones.
ChemInform Abstract: Silver(I)‐Catalyzed Reaction of Terminal Alkynes with (Diacetoxyiodo) Benzene: A Convenient, Efficient and Clean Preparation of α‐Acetoxy Ketones.
Authors: Deng Guisheng , Luo Jing 
Published: November 2013

AbstractThe title reaction proceeds with high chemoselectivity and under mild reaction conditions.
ChemInform Abstract: Ylide Hydrolysis in Tandem Reactions: A Highly Z/E‐Selective Access to 3‐Alkylidene Dihydrobenzofurans and Related Analogues.
Authors: Zhu Jian‐Bo , Wang Peng , Liao Saihu , Tang Yong 
Published: November 2013

AbstractNoteworthy, the reactions leading to dihydrofuran (IVb) and dihydrothiophene (VI) show an opposite Z/E selectivity.
ChemInform Abstract: Synthesis and Cytotoxic Activities of Novel Hybrid 2‐Phenyl‐3‐alkylbenzofuran and Imidazole/Triazole Compounds.
Authors: Chen Wen , Deng Xiao‐Yan , Li Yan , Yang Li‐Juan , Wan Wei‐Chao , Wang Xue‐Quan , Zhang Hong‐Bin , Yang Xiao‐Dong 
Published: November 2013

AbstractAmong the compound synthesized, hybrid compound (Va) is found to be the most potent one against five strains of human tumor cell lines.
ChemInform Abstract: Improved Method for the Synthesis of 1‐Vinylindole
Authors: Shmidt E. Yu. , Protsuk N. I. , Vasil'tsov A. M. , Ivanov A. V. , Mikhaleva A. I. , Trofimov B. A. 
Published: November 2013

Abstractbased on the vinylation of indole by acetylene in the superbase system KOH‐DMSO
ChemInform Abstract: Synthesis of 2‐Styrylbenzoxazole Derivatives by the Reaction of Styrylphenolic Schiff Bases with Thianthrene Cation Radical.
Authors: Park Hee Jung , Park Myeong Soon , Lee Tae Hee , Park Koon Ha 
Published: November 2013

AbstractThe products are obtained in much lower yields in the absence of 2,6‐di‐tert‐butyl‐4‐methylpyridine.
ChemInform Abstract: Synthesis and Fungicidal Activities of Some 2‐Substituted Arylamino‐5‐(2′‐furyl)‐1,3,4‐thiadiazolo[3,2‐c]thiazoles and 5‐Substituted Aryl‐2‐substituted Arylamino‐1,3,4‐thiadiazolo[3,2‐c]thiazoles.
Authors: Tiwari Shailendra , Nizamuddin Nizamuddin 
Published: November 2013

Abstract12 Title compounds of type (VI) are prepared and screened for their antifungal activities.
ChemInform Abstract: Synthesis, Structure and H+/K+‐ATPase Inhibitory Activity of Novel Triazolyl Substituted Tetrahydrobenzofuran Derivatives via One‐Pot Three‐Component Click Reaction.
Authors: Fang Hubiao , Jin Lei , Huang Nianyu , Wang Junzhi , Zou Kun , Luo Zaigang 
Published: November 2013

AbstractA CuI‐catalyzed three‐component alkyne‐azide cycloaddition in the presence of an excess of secondary amine is used for the synthesis of triazolyl‐substituted tetrahydrobenzofuran derivatives.
ChemInform Abstract: Synthesis and Biological Evaluation of Some New N1‐ [4‐(4‐Chlorophenylsulfonyl)benzoyl] ‐N4‐(aryl)‐thiosemicarbazides and Products of Their Cyclization.
Authors: Barbuceanu Stefania‐Felicia , Bancescu Gabriela , Saramet Gabriel , Barbuceanu Florica , Draghici Constantin , Radulescu Flavian Stefan , Ionescu Aura , Negres Simona 
Published: November 2013

AbstractAll compounds were screened for their antimicrobial and analgesic activities.
ChemInform Abstract: Highly Stereoselective Synthesis of 2,6‐cis‐Substituted Tetrahydropyrans Using a One‐Pot Sequential Catalysis.
Authors: Dai Qipu , Rana Nirmal K. , Zhao John Cong‐Gui 
Published: November 2013

AbstractThe title synthesis is achieved through a one‐pot Henry‐ and oxa‐Michael reaction sequence using Wan′s ligand as chiral catalyst.
ChemInform Abstract: Diversity of Reactions of Isomeric Aminopyridine N‐Oxides with Chloronitropyridines: An Experimental and Theoretical Study.
Authors: Wolinska Ewa , Pucko Wieslaw 
Published: November 2013

AbstractThe regioselectivity of the reaction is dictated by the position of an amino substituent in the pyridine N‐oxide ring.
ChemInform Abstract: Synthesis of New Azocompounds and Fused Pyrazolo[5,1‐c][1,2,4]triazines Using Heterocyclic Components.
Authors: Ledenyova Irina V. , Didenko Vitaly V. , Shestakov Alexander S. , Shikhaliev Khidmet S. 
Published: November 2013

AbstractAll products are purified by either recrystallization or simple washing.