bluuebunny/crossref_metadata_2025_split huggingface dataset:
Large‐Scale Highly Ordered Chitosan‐Core Au‐Shell Nanopatterns with Plasmonic Tunability: A Top‐Down Approach to Fabricate Core–Shell Nanostructures
Authors: Baek Youn‐Kyoung , Yoo Seung Min , Kang Taejoon , Jeon Hwan‐Jin , Kim Kyounghwan , Lee Ji‐Sun , Lee Sang Yup , Kim Bongsoo , Jung Hee‐Tae 
Published: September 2010

AbstractA new strategy for fabricating highly ordered chitosan–Au core–shell nano­patterns with tunable surface plasmon resonance (SPR) properties is developed. This strategy combines fabrication of a chitosan nanopattern by using a soft‐nanoimprint technique with selective deposition of Au nanoparticles onto the patterned chitosan surface. The SPR response can be tuned by controlling the features of the resulting Au shell/polymer hybrid pattern, which makes these materials potentially useful in ultrasensitive optical sensors for molecular detection.
Recent Developments in Top‐Emitting Organic Light‐Emitting Diodes
Authors: Chen Shufen , Deng Lingling , Xie Jun , Peng Ling , Xie Linghai , Fan Quli , Huang Wei 
Published: September 2010

AbstractOrganic light‐emitting diodes (OLEDs) have rapidly progressed in recent years due to their unique characteristics and potential applications in flat panel displays. Significant advancements in top‐emitting OLEDs have driven the development of large‐size screens and microdisplays with high resolution and large aperture ratio. After a brief introduction to the architecture and types of top‐emitting OLEDs, the microcavity theory typically used in top‐emitting OLEDs is described in detail here. Then, methods for producing and understanding monochromatic (red, green, and blue) and white top‐emitting OLEDs are summarized and discussed. Finally, the status of display development based on top‐emitting OLEDs is briefly addressed.
Laminar flow with injection through a long dead‐end cylindrical porous tube: Application to a hollow fiber membrane
Authors: Kim Albert S. , Lee Yong Taek 
Published: September 2010

AbstractEffects of membrane length and hydraulic resistance on the steady‐state laminar flow of a fluid with injection in a dead‐end cylindrical porous tube have been investigated using the perturbation approach of the Navier‐Stokes and continuity equations. Analytic solutions of the dynamic equations, reduced to non linear differential equations, were obtained and applied to submerged, dead‐end hollow fiber membranes of large resistances and small wall Reynolds numbers. The velocity and pressure profiles were solved using the method of separation of variables as with physical properties of the membrane and fluid and the wall velocity at the dead end. The constant flux approximation was found to be valid only for a short membrane with a large hydraulic resistance. The constant permeability approximation used in this study is universal for a membrane of an arbitrary length, through which the fluid velocities and pressure increase exponentially from the dead end to the open end. © 2010 American Institute of Chemical Engineers AIChE J, 2011
Effect of rapid mold surface inducting heating on the replication ability of microinjection molding light‐guided plates with V‐grooved microfeatures
Authors: Huang Ming‐Shyan , Yu Jyh‐Cheng , Lin Ying‐Zhi 
Published: September 2010

AbstractThis study applies a magnetic induction heating method for rapid and uniform heating of a mold surface for injection molding of 2‐inch light‐guided plates (LGPs). Mold temperature is an important process parameter that affects microinjection molding quality. This research investigates the effects of high‐mold surface temperature generated by induction heating in enhancing the replication rate of microfeatures of LGPs. This study has three stages. First, an appropriate power rate setting is determined for induction heating and injection molding process window. Second, all key parameters affecting microfeature quality are identified to determine the optimum LGP micromolding parameters using the Taguchi and ANOVA methods. Third, the quality of microfeature heights and angles are experimentally verified. Polymethyl methacrylate was molded under various injection molding conditions to replicate an electroformed nickel stamper with V‐grooves 10 μm in width and 5 μm in depth. In this investigation, injection speed was set in the conventional range. Experimental findings indicate that instead of high‐mold temperature, the combination of low mold temperature and high surface temperature obtained using induction heating improve replication quality and reduce cycle time. © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2010
Craniosynostosis and nutrient intake during pregnancy
Authors: Carmichael Suzan L. , Rasmussen Sonja A. , Lammer Edward J. , Ma Chen , Shaw Gary M. ,   and the National Birth Defects Prevention Study
Published: September 2010

AbstractOBJECTIVE: To examine the association of craniosynostosis with maternal intake of folic acid–containing supplements and dietary nutrients. METHODS: The study included deliveries from 1997 to 2005 from the National Birth Defects Prevention Study. Nonsyndromic infants with craniosynostosis (n = 815) were compared to nonmalformed, population‐based liveborn control infants (n = 6789), by estimating adjusted odds ratios (AORs) and 95% confidence intervals (CIs) from logistic regression models that included mother's age, parity, race‐ethnicity, education, body mass index, smoking, alcohol, fertility treatments, plurality, and study center. We compared quartiles of intake and specified nutrients as continuous. RESULTS: Intake of folic acid–containing supplements was not associated with craniosynostosis (AORs were close to 1). Analyses of dietary nutrients were restricted to mothers who took supplements during the first trimester (i.e., most women). Based on continuous specifications of nutrients, sagittal synostosis risk was significantly lower among women with higher intake of riboflavin and vitamins B6, E, and C; metopic synostosis risk was significantly higher among women with higher intakes of choline and vitamin B12; and coronal synostosis risk was significantly lower among women with higher intake of methionine and vitamin C. As examples, AORs for sagittal synostosis among women with intakes of vitamin B6 and riboflavin in the highest versus lowest quartiles were 0.4 (95% CI, 0.2–0.6) and 0.5 (95% CI, 0.3–0.7), respectively. CONCLUSION: This analysis suggests that dietary intake of certain nutrients may be associated with craniosynostosis, and results may vary by suture type. Birth Defects Research (Part A), 2010. © 2010 Wiley‐Liss, Inc.
A comparison of repeated exposure to fearful and disgusting stimuli among spider phobics
Authors: Choplin Christine E. , Carter Michele M. 
Published: September 2010

AbstractThis study examined the role of fear and disgust in repeated exposure among spider phobics. Thirty spider phobics were randomly assigned to one of two experimental groups. Both groups completed measures of fear and disgust and performed two initial standardized Behavioral Avoidance Tests (BATs; one with a fear stimulus – live tarantula, and one with a disgust stimulus – dead rat). One group was then repeatedly exposed to the tarantula and the other to the dead rat. Results of the study indicated that exposure to either the disgust stimulus or the live tarantula was associated with significant decreases in fear, avoidance, and disgust. However, it was found that repeated exposure to the fear stimulus produced a greater decrease in avoidance behavior. Results suggest that both types of exposure can be effective in alleviating associated symptoms and provide additional evidence that disgust sensitivity plays a role in the treatment of spider phobia. Copyright © 2010 John Wiley & Sons, Ltd.
Chemiluminescence determination of antioxidant property of Zizyphus mistol and Prosopis alba during oxidative stress generated in blood by Hemolytic Uremic Syndrome‐producing Escherichia coli
Authors: Albrecht Claudia , Pellarin María G. , Baronetti José , Rojas María J. , Albesa Inés , Eraso Alberto J. 
Published: September 2010

ABSTRACTThis study was undertaken to elucidate the antioxidant effect of Zizyphus mistol and Prosopis alba, with the hypothesis that these fruits can counteract the induction of reactive oxygen species (ROS) caused by toxins produced by Escherichia coli. In the search of nutrients effective against the Hemolytic Uremic Syndrome (HUS), we detected by chemiluminescence a protective role of both plants, due to their natural antioxidants significantly decreasing the levels of ROS induced by toxins from E. coli in blood. The ferric reducing antioxidant power (FRAP) was found to be higher in Z. mistol than in P. alba. The chemical analyses of the phenols and flavonoids present in the fruit extracts indicated that the FRAP correlated with the amount of phenolic compounds, but not with the flavonoids analyzed. Both fruits studied reduce the induction of ROS, and in this way help to prevent the development of complications related to oxidative stress generated in the blood of patients with HUS. Copyright © 2010 John Wiley & Sons, Ltd.
Selection of CHO host cell subclones with increased specific antibody production rates by repeated cycles of transient transfection and cell sorting
Authors: Pichler Johannes , Galosy Sybille , Mott John , Borth Nicole 
Published: September 2010

AbstractOptimization of host cell lines both for transient and stable protein production is typically hampered by the inherent heterogeneity of cells within a population. This heterogeneity is caused not only by “hard fact” gene mutations, but also by subtle differences in the cellular network of regulation, which may include epigenetic variations. Taking advantage of this heterogeneity, we sorted for naturally occurring variants of CHO‐K1 and CHO‐S host cells that possess an improved cellular machinery for transient antibody production. The long‐term goal of this study was both to identify host cells that yield recombinant cell lines with on average higher productivity, but also to study the molecular differences that characterize such cells, independent of the site of gene integration or gene amplification. To identify such cells we optimized the procedure for transient transfection by electroporation to a degree that gave uniform transfer of plasmid DNA into nearly 100% of the cells and resulted in reproducible average productivities, with a standard deviation of 16% between independent experiments. Using this optimized protocol, the 1% of cells with the highest specific productivity was sorted and subcloned with a cold capture secretion assay. Upon re‐transfection, the resulting subclones showed the same specific productivity as their respective parental cell line. To enrich for cells with potentially stable improved properties, the 1% highest producers were sorted three times, 2 days after transient transfection each, and the enriched population was again sorted into microtiter plates for subcloning. For each of the two parental cell lines tested, three subclones were obtained that had a threefold higher specific productivity after transient transfection. This property was stable for approximately 3 months, indicating that the changes in productivity were regulatory and not mutational. Biotechnol. Bioeng. 2011;108: 386–394. © 2010 Wiley Periodicals, Inc.
Excitation Mechanism for the Atomic Oxygen and OH Emissions in the Night Airglow
Authors: Schiff H. I. 
Published: September 2010

AbstractThe detailed mechanisms for excitation of all the night glow emissions remain very much in doubt. The green atomic oxygen line appears to be excited by a modification of the Chapman mechanism, although recent laboratory studies still show some inconsistent features. The red atomic oxygen line most likely results from the atomic exchange reaction between 0+ ions and either N2 or O2. However, comparison of laboratory measurements and airglow observations suggests these reactions have low pre‐exponential factors. Recent laboratory measurements and Nicolet's estimate of the H‐atom concentration at 85 km indicate that the reaction between H‐atoms and ozone remains the most attractive process for excitation of the OH emission. It is shown that the mechanisms suggested by Krassovsky are not as likely as the H — O3 process.
The Trapping by Nitric Oxide of Initially‐Formed Free Radicals in Photochemical Reactions: 1. The mercury‐6(3P1)‐photosensitized decomposition of propane and the deuterated propanes
Authors: Woodall George N. C. , Gunning Harry E. 
Published: September 2010

AbstractA study has been made of the relative primary yields of n‐propyl and i‐propyl radicals in the reactions of Hg 6(3P1) atoms with C3H8, C3D8, CH3CD2CH3 and CD3CH2CD3. A fast flow system was used, at 25°, and a pressure of 11–12 mm, with (i) pure NO and (ii) a mixture of NO and 1‐C4H8, added as inhibitors.With pure NO, the propyl radicals formed the corresponding oximes, nitropropanes, nitrites and nitrates. Low flow rates and low % (NO) favoured oxime formation. From the products, the relative percentage of those of n‐propyl origin (%(n‐pr)) could be determined. With pure NO, %(n‐pr) rose to a maximum with %(NO) in the 15–30 range. The high NO levels were required to scavenge primary H‐atoms. The same effect could be achieved by using 2% NO, and 4.8% 1‐butene. This dual‐inhibitor method gave the following results with the %(n‐pr) values in parentheses : C3H8(42); C3D8(49); CH3CD2CH3C77); CD3CH2CD3(25).It is shown that the results can be explained in terms of a cyclic quenching complex involving quasi‐bivalent bonding of Hg 6(3P1) simultaneously to a primary and secondary CH (or CD) bond. The C3H8 and C3D8 cyclic complexes symmetrically cleave forming nearly equal yields of the two propyl radicals. With CH and CD bonds in the complex, as in CH3CD2CH8 and CD3CH2CD3, a D/H isotope effect of ca three results, favouring CH cleavage.
Sur la Réaction Photochimique des Composés Polyaromatiques Avec le Tétrachlorure de Carbone
Authors: Ivanoff Melle N. 
Published: September 2010

AbstractNous avons étudié les réactions photochimiques du tétrachlorure de carbone avec différents composés aromatiques polycycliques Benz‐1,2 Anthracène, Pyrène, Chrysène, trans‐Stilbène, et Naphtacène. Les rendements quantiques ont été mesurés dans chaque cas.Pour toutes les substances étudiées, excepté le Naphtacène, l'échelle des réactivités trouvées est voisine de celle prévue pour une réaction d'addition des composés polyaromatiques à l'état fondamental. La réactivité du naphtacène est beaucoup plus faible que prévue. Son rendement quantique dépend de la température pour la longueur d'onde de 4360 Å.
Photochemical Reactions of Nitrophenylesters and ‐Ethers
Authors: Havinga E. , De Jongh R. O. 
Published: September 2010

AbstractSeveral years ago we reported the occurrence of an intriguing type of photochemical reaction that was observed during illumination of solutions in water of nitrophenylphosphates and ‐sulphates and of nitrophenylethers (e.g. nitroanisoles) (1,2). In this communication some results of continued studies of these reactions are discussed.
Sur les Réactions Photochimiques de L'Acridine dans des Solvants Hydrogénés
Authors: Kellmann Melle A. 
Published: September 2010

AbstractNous avons étudié les réactions photochimiques de l'acridine dans divers solvants hydrogénés, par irradiation à 3.660 A. Le rendement quantique Φ (‐A) de la disparition de l'acridine a été mesuré dans chaque cas.Les énergies de liaison C‐H dans les solvants utilisés ne sont pas seules responsables des rendements quantiques observés; des problèmes d'empêchement stérique interviennent également.
Photoréduction des Colorants Thiaziniques par les Acides Amino Polycarboxyliques Application aux Dosages de Mélanges de Cations
Authors: Joussot‐Dubien Jacques , Faure Jean 
Published: September 2010

AbstractNous avons étudié la photoréduction de la thionine et du bleu de méthylène par différents acides aminopolycarboxyliques (complexons) en solution.1. La vitesse de photoréduction de la thionine passe par une valeur maximale entre pH 6 et 9 suivant la nature du complexon.2. La vitesse de photoréduction du bleu de méthylène croit constamment avec le pH, mais semble tendre vers une vitesse maximale en milieu très basique, zone que l'on ne peut explorer puisque ce colorant se décompose à partir de pH 12.Ces résultats peuvent s'expliquer si l'on admet que l'espèce chimique photosensible dans la solution est une association moléculaire entre une molécule de colorant, sous la forme acide la plus facilement réductible, et une molécule de complexon sous sa forme basique la plus facilement oxydable.Nous avons exploité ces resultats en analyse complexométrique en dosant un melange Fer(III) — Aluminium.
La Sensibilisation Chimique du Bromure D'Argent
Authors: Hautot A. 
Published: September 2010

AbstractLa sensibilisation des émulsions de halogénures d'argent consiste en l'activation photochimique du halogénure traité par des traces de composés sulfurants, réducteurs ou de divers métaux nobles. Deux interprétations de cette activation ont été avancées : l'une admet que le sensibilisateur, en réagissant avec le halogène libéré pendant l'exposition lumineuse, évite la recombinaison du halogène avec l'argent photolytique; l'autre postule que le sensibilisateur crée, à la surface des cristaux du halogénure d'argent, des germes susceptibles de servir comme centres de condensation de l'argent photolytique. Les deux théories sont confrontées et discutées.
Internally Protected Amino Sugar Equivalents from Enantiopure 1,2‐Oxazines: Synthesis of Variably Configured Carbohydrates with C‐Branched Amino Sugar Units
Authors: Pfrengle Fabian , Reissig Hans‐Ulrich 
Published: September 2010

AbstractA stereodivergent synthesis of differently configured C2‐branched 4‐amino sugar derivatives was accomplished. The Lewis acid mediated rearrangement of phenylthio‐substituted 1,2‐oxazines delivered glycosyl donor equivalents that can directly be employed in glycosidation reactions. Treatment with methanol provided internally protected amino sugar equivalents that have been transformed into the stereoisomeric methyl glycosides 28, ent‐28, 29, ent‐29 and 34 in two simple reductive steps. Reaction with natural carbohydrates or bicyclic amino sugar precursors allowed the synthesis of homo‐oligomeric di‐ and trisaccharides 44, 46 and 47 or a hybrid trisaccharide 51 with natural carbohydrates. Access to a bivalent amino sugar derivative 54 was accomplished by reaction of rearrangement product 10 with 1,5‐pentanediol. Alternatively, when a protected L‐serine derivative was employed as glycosyl acceptor, the glycosylated amino acid 60 was efficiently prepared in few steps. In this report we describe the synthesis of unusual amino sugar building blocks from enantiopure 1,2‐oxazines that can be attached to natural carbohydrates or natural product aglycons to produce new natural product analogues with potential applications in medicinal chemistry.
ChemInform Abstract: Imma Perovskite‐Type Oxynitride LaTiO2N: Structure and Electron Density.
Authors: Yashima Masatomo , Saito Mio , Nakano Hiromi , Takata Tsuyoshi , Ogisu Kiyonori , Domen Kazunari 
Published: September 2010

AbstractA highly crystalline and high‐purity LaTiO2N sample is synthesized from the corresponding oxides by ammonolysis (1.
ChemInform Abstract: Photoluminescence and Concentration Quenching of NaCa4(BO3)3:Eu3+ Phosphor.
Authors: Zhang Xinmin , Seo Hyo Jin 
Published: September 2010

AbstractThe new title phosphor is synthesized by solid state reaction of Na2CO3, CaCO3, Eu2O3, and excess H3BO3 (880 °C, 12 h).
ChemInform Abstract: Phase Equilibria in the Oxide System Nd2O3—K2O—P2O5.
Authors: Szczygiel Irena , Znamierowska Teresa , Mizer Dagmara 
Published: September 2010

AbstractThe title system is studied with focus on the NdPO4—K3PO4—KPO3 partial system and the phase diagram of this region is constructed.
ChemInform Abstract: Structure and Stability of Sodium Intercalated Phases in Olivine FePO4.
Authors: Moreau P. , Guyomard D. , Gaubicher J. , Boucher F. 
Published: September 2010

AbstractTwo new NaxFePO4 (x = 0.7, 1) phases with olivine‐based structures are electrochemically synthesized using a mixture of FePO4 and carbon black as positive electrode, Na as negative electrode, and NaClO4 solution as electrolyte.
ChemInform Abstract: A Ferromagnetic Carbodiimide: Cr2(NCN)3.
Authors: Tang Xiaojuan , Xiang Hongping , Liu Xiaohui , Speldrich Manfred , Dronskowski Richard 
Published: September 2010

AbstractThe title compound, the first transition‐metal(III) carbodiimide with a 3d3 configuration is prepared from a mixture of CrCl3 and ZnNCN using LiCl/KCl as a flux (550 °C, 2 d).
ChemInform Abstract: Topochemical Synthesis of Europium Molybdenum Oxynitride Pyrochlores.
Authors: Yang Minghui , Oro‐Sole Judith , Fuertes Amparo , Attfield J. Paul 
Published: September 2010

AbstractEu2Mo2O7 (I) is synthesized from a stoichiometric mixture of Eu2O3, MoO2, and Mo (alumina boat, flowing Ar, 1450 °C, 14 h) and EuMoO4 (II) from a stoichiometric mixture of Eu2O3, MoO3, and Mo (quartz tube, 600 °C, 24 h, and 1050 °C, 36 h).
ChemInform Abstract: Combined Magnetic Susceptibility Measurements and 57Fe Moessbauer Spectroscopy on a Ferromagnetic {Fe4IIIDy4} Ring.
Authors: Schray Dirk , Abbas Ghulam , Lan Yanhua , Mereacre Valeriu , Sundt Alexander , Dreiser Jan , Waldmann Oliver , Kostakis George E. , Anson Christopher E. , Powell Annie K. 
Published: September 2010

AbstractThe new compound (III) crystallizes in the monoclinic space group P21/n with Z = 4.
ChemInform Abstract: Two Novel Copper—Undecaniobates Decorated by Copper—Organic Cations [{Cu(H2O) L}2{CuNb11O35H4}]5‐ (L: 10‐Phenanthroline, 2,2′‐Bipyridine) Consisting of Plenary and Monolacunary Lindqvist‐Type Isopolyniobate Fragments.
Authors: Niu Jing‐Yang , Chen Guo , Zhao Jun‐Wei , Ma Peng‐Tao , Li Su‐Zhi , Wang Jing‐Ping , Li Ming‐Xue , Bai Yan , Ji Bian‐Sheng 
Published: September 2010

AbstractCompounds (III) and (IV) represent the first examples of copper undecaniobates.
ChemInform Abstract: Actinide Tetracyanoplatinates: Synthesis and Structural Characterization with Uncharacteristic Th—NC Coordination and Thorium Fluorescence.
Authors: Maynard Branson A. , Sykora Richard E. , Mague Joel T. , Gordon Anne E. V. 
Published: September 2010

AbstractThe structures of the new tetracyanoplatinates (III) (monoclinic, space group C2/c, Z = 4), (IV) (orthorhombic, Pbca, Z = 8), and (VI) (tetragonal, P4/mbm, Z = 4) are determined by single crystal.
ChemInform Abstract: Highly Efficient Diastereoselective Reduction of α‐Fluoroimines.
Authors: Malamakal Roy M. , Hess Whitney R. , Davis Todd A. 
Published: September 2010

AbstractThe new methodology for the reduction of α‐fluoroimines is based on the ability of fluorine and nitrogen to activate organosilanes which results in enhanced reducing reactivity and high diastereoselectivity.
ChemInform Abstract: N,N′‐Dioxide—Cu(OTf)2 Complex Catalyzed Highly Enantioselective Amination Reaction of N‐Acetyl Enamide.
Authors: Chang Lu , Kuang Yulong , Qin Bo , Zhou Xin , Liu Xiaohua , Lin Lili , Feng Xiaoming 
Published: September 2010

AbstractThe title reaction performs well over a range of substituted α‐aromatic N‐acetyl enamides.
ChemInform Abstract: Efficient Pd‐Catalyzed Coupling of Tautomerizable Heterocycles with Terminal Alkynes via C—OH Bond Activation Using PyBrOP.
Authors: Shi Ce , Aldrich Courtney C. 
Published: September 2010

AbstractThe alkynylation of tautomerizable heterocycles is described via a two step process involving in situ C—OH activation with PyBroP followed by Sonagashira coupling with a range of alkynes.
ChemInform Abstract: A Facile Demethylation of ortho Substituted Aryl Methyl Ethers Promoted by AlCl3.
Authors: Du Zhen‐Ting , Lu Jing , Yu Hong‐Rui , Xu Yan , Li An‐Pai 
Published: September 2010

AbstractAryl methyl ethers which are ortho‐substituted with electron‐withdrawing groups are selectively demethylated in the presence of aluminum chloride.