bluuebunny/crossref_metadata_2025_split huggingface dataset:
A new route for the direct synthesis of Al2O3/SiC nanopowder mixtures by the carbothermal reduction of parent oxides
Authors: Falamaki Cavus , Tari Mehdi Heydarzadeh , Ebadzadeh Touraj 
Published: February 2010

AbstractThe direct synthesis of Al2O3/SiC nanopowders from the parent oxides Al2O3 and SiO2 through mullite carbothermal reduction as intermediate phase has been investigated. The effect of the amount of excess stoichiometric carbon (active charcoal, AC) as sole carbon source on the microstructure evolution has been studied. The effect of type of carbon source (AC, graphite (G), 50 wt % AC 50 wt % G mixture, 57 wt % AC 43 wt % G mixture) on the microstructure evolution was investigated using 30 wt % excess stoichiometric carbon. The effect of reaction temperature, reaction duration, initial green compact thickness, and carbon source on the mullite conversion, morphology, and surface area of the final powders has been thoroughly investigated. The calculated activation energy is in the range of 203–230 kJ mol−1, depending on the carbon source used. The synergetic effect observed for the AC/G mixtures has been accordingly explained. © 2010 American Institute of Chemical Engineers AIChE J, 2010
Mitochondrial DNA patterns in the Iberian Northern plateau: Population dynamics and substructure of the Zamora province
Authors: Alvarez Luis , Santos Cristina , Ramos Amanda , Pratdesaba Roser , Francalacci Paolo , Aluja María Pilar 
Published: February 2010

AbstractSeveral studies have shown the importance of recent events in the configuration of the genetic landscape of a specific territory. In this context, due to the phenomena of repopulation and demographic fluctuations that took place in recent centuries, the Iberian Northern plateau is a very interesting case study. The main aim of this work is to check if recent population movements together with existing boundaries (geographical and administrative) have influenced the current genetic composition of the area. To accomplish this general purpose, mitochondrial DNA variations of 214 individuals from a population located in the Western region of the Iberian Northern plateau (the province of Zamora) were analyzed. Results showed a typical Western European mitochondrial DNA haplogroup composition. However, unexpected high frequencies of U5, HV0, and L haplogroups were found in some regions. The analyses of microdifferentiation showed that there are differences between regions, but no geographic substructure organization can be noticed. It can be stated that the differences observed in the genetic pool of the sampled area at regional level results from the mixture of different populations carrying new lineages into this area at different points in history. Am J Phys Anthropol 142:531–539, 2010. © 2010 Wiley‐Liss, Inc.
Locality and attachedness‐based temporal social network growth dynamics analysis: A case study of evolving nanotechnology scientific collaboration networks
Authors: Zhang Haizheng , Qiu Baojun , Ivanova Kristinka , Giles C. Lee , Foley Henry C. , Yen John 
Published: February 2010

AbstractThe rapid advancement of nanotechnology research and development during the past decade presents an excellent opportunity for a scientometric study because it can provide insights into the dynamic growth of the fast‐evolving social networks associated with this field. In this article, we describe a case study conducted on nanotechnology to discover the dynamics that govern the growth process of rapidly advancing scientific‐collaboration networks. This article starts with the definition of temporal social networks and demonstrates that the nanotechnology collaboration network, similar to other real‐world social networks, exhibits a set of intriguing static and dynamic topological properties. Inspired by the observations that in collaboration networks new connections tend to be augmented between nodes in proximity, we explore the locality elements and the attachedness factor in growing networks. In particular, we develop two distance‐based computational network growth schemes, namely the distance‐based growth model (DG) and the hybrid degree and distance‐based growth model (DDG). The DG model considers only locality element while the DDG is a hybrid model that factors into both locality and attachedness elements. The simulation results from these models indicate that both clustering coefficient rates and the average shortest distance are closely related to the edge densification rates. In addition, the hybrid DDG model exhibits higher clustering coefficient values and decreasing average shortest distance when the edge densification rate is fixed, which implies that combining locality and attachedness can better characterize the growing process of the nanotechnology community. Based on the simulation results, we conclude that social network evolution is related to both attachedness and locality factors.
Diol Appended Quenchers for Fluorescein Boronic Acid
Authors: Elfeky Souad A. , Flower Stephen E. , Masumoto Naoko , D'Hooge François , Labarthe Ludivine , Chen Wenbo , Len Christophe , James Tony D. , Fossey John S. 
Published: February 2010

AbstractFluorescein isothiocyanate is treated with 3‐aminophenylboronic acid to provide a fluorescently tagged boronic acid derivative which is used to assess Förster resonance energy transfer (FRET) quenching upon boronate ester formation with a series of bespoke diol appended quenchers. Fluorescence spectroscopy comparison of quenching efficiency between treatment of fluorescein and its boronic acid appended congener with quencher appended diol reveals boronate ester formation (covalently linked) to be the more efficient regime and from the panel of quenchers which also included nucleosides.
Short‐ and medium‐range hydrological ensemble forecasts over France
Authors: Thirel G. , Regimbeau F. , Martin E. , Noilhan J. , Habets F. 
Published: February 2010

AbstractThe Safran–Isba–Modcou (SIM) distributed hydro‐meteorological modeling suite is developed at Météo‐France. Two ensemble forecasts were tested as input to the SIM suite. The first one was the ECMWF EPS (10‐day range, 1.5° grid, 51 members). Then, the Météo‐France PEARP (60‐h range, 0.25° grid, 11 members) was used. The methods for disaggregating the EPSs down to the 8‐km Isba grid were described. Statistical analysis of the skills of these systems (for rainfall and streamflows) was performed against observations and showed the interests of using these EPSs. The PEARP‐based streamflows showed better scores than the ECMWF ones, for low and high flows. Copyright © 2010 Royal Meteorological Society
Dynamic and structural scalings of the complexation between pDNA and bPEI in semidilute and low‐salt solutions
Authors: Deng Rui , Diao Shu , Yue Yanan , Ngai To , Wu Chi , Jin Fan 
Published: February 2010

AbstractUsing a combination of static and dynamic laser light scattering, we investigated the complexation of a supercoiled plasmid DNA (pDNA, 104 bp) and a branched polyethyleneimine (bPEI, Mw = 25 kD) in semidilute and low‐salt aqueous solutions. Our results unearth some scaling laws for dynamic and structural properties of the resultant complexes (polyplexes) with different bPEI:pDNA (N:P) molar ratios. Namely, the average scattering intensity (<I>) and the average linewidth of the Rayleigh peak (<Γ>) are scaled to the scattering vector (q) as <I> ∝ q or <Γ> ∝ q, where αS and αD are two N:P dependent scaling exponents. The N:P ratio strongly affects the complexation. When N:P < 2.0, the motions of the negatively charged and extended pDNA chains and the polyplexes are highly correlated so that they behave like a transient network with a fractal dimension. As the N:P ratio increases, nearly all of pDNA chains condensed and the overall charge of the polyplexes reverses to slightly positive, resulting in a turbid dispersion of large loose aggregates made of smaller, but more compact, polyplexes. Further increase of N:P finally disrupts large loose aggregates, leading to a homogeneous transparent dispersion of the polyplexes. © 2010 Wiley Periodicals, Inc. Biopolymers 93: 571–577, 2010.This article was originally published online as an accepted preprint. The “Published Online” date corresponds to the preprint version. You can request a copy of the preprint by emailing the Biopolymers editorial office at biopolymers@wiley.com
Pharmacokinetics of luteolin and tetra‐acetyl‐luteolin assayed by HPLC in rats after oral administration
Authors: Chen Xiujie , Liu Lei , Sun Zhizhong , Liu Yongsheng , Xu Jiankai , Liu Sibo , Huang Bangqing , Ma Ling , Yu Zhiguo , Bi Kaishun 
Published: February 2010

AbstractAccurate and reproducible HPLC methods were developed and validated for the determination of concentrations of luteolin (LT) and tetra‐acetyl‐luteolin (TALT) in rat plasma. HPLC analyses were performed on an Agilent TC‐C18 column protected by a guard Agilent Zorbax Eclipse Plus. The mobile phase for LT was a binary mixture of acetonitrile–water (40:60, v/v) containing 0.5% phosphoric acid at a flow rate of 1.0 mL/min, and that for TALT was a binary mixture of methanol–water (70 : 30, v/v) containing 0.5% glacial acetic acid at the same flow rate. The UV detection wavelength for both analytes was set at 350 nm. The calibration curve was linear over the range of 40–1800 ng/mL, the lower limit of quantitation was 40 ng/mL and the lower limit of detection was 20 ng/mL for both LT and TALT. The intra‐ and inter‐day precision (RSD) values for all samples were within 7.9%. The concentration–time curves of LT and TALT after oral administration (30 mg/kg) were both fitted to a two‐compartment model. The pharmacokinetic characteristics of TALT were better than that of LT in the maximum plasma concentration (Cmax) and the area under the concentration–time curve (AUC). Copyright © 2010 John Wiley & Sons, Ltd.
First Approach to Nitrogen‐Containing Fused Aromatic Hydrocarbons as Targets for Organoelectronics Utilizing a New Transformation of O‐Protected Diaryl Methanols
Authors: Bałczewski Piotr , Bodzioch Agnieszka , Różycka‐Sokołowska Ewa , Marciniak Bernard , Uznański Paweł 
Published: February 2010

AbstractA new concise approach for the construction of heteroatom analogues of polycyclic aromatic benzo[g]quinoline, benzo[b]carbazole, and pyrido[b]carbazole systems via diaryl methanols is described. This transformation involves formation of a central benzene ring fused to two aromatic 5‐ or 6‐membered rings of pyrrole and/or pyridine by using a combination of two aromatic aldehydes, of which at least one contains a ring nitrogen. Analysis of the UV and fluorescent properties, Stokes shifts, quantum yields in solution, and π‐stacking interactions in the crystal structures of the new materials was performed. These polycyclic aromatic compounds show potential as small‐molecule organoelectronic materials.
Hypergolic N,N‐Dimethylhydrazinium Ionic Liquids
Authors: Zhang Yanqiang , Gao Haixiang , Guo Yong , Joo Young‐Hyuk , Shreeve Jean'ne M. 
Published: February 2010

AbstractN,N‐Dimethylhydrazinium dicyanamide and nitrocyanamide ionic liquids (ILs) were prepared by quaterization of N,N‐dimethylhydrazine with alkyl halides followed by metathesis reactions with silver dicyanamide or silver nitrocyanamide. The key physicochemical properties, such as melting point and decomposition temperatures, density, viscosity, heat of formation, detonation pressure and velocity, and specific impulse were measured/calculated. The impact of anions and alkyl‐substituted cations on these properties is demonstrated. Droplet tests with white‐fuming nitric acid (WFNA) as an oxidizer were utilized to show that the 14 new N,N‐dimethylhydrazinium salts are hypergolic with ignition delay (ID) times ranging from 22 to 1642 ms, thereby suggesting that some may have potential as bipropellants.
ChemInform Abstract: [N3MN5]q: A Type of Low‐Lying Sandwich‐Like Isomer on [N8M]q Hypersurface with (M, q) = (Ni, 0), (Co, ‐1), and (Fe, ‐2).
Authors: Jin Lin , Ding Yi‐hong 
Published: February 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Synthesis and Crystal Structure of a Bixbyite‐Type Solid Solution Zr0.43Er0.57O1.07N0.43.
Authors: Meyer Stefanie , Martinez Meta Neil J. , Schweda Eberhard , Eibl Oliver 
Published: February 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Polyoxothiomolybdenum Wheels as Anionic Receptors for Recognition of Sulfate and Sulfonate Anions.
Authors: Lemonnier Jean‐Francois , Floquet Sebastien , Marrot Jerome , Cadot Emmanuel 
Published: February 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Fusion of Coordination‐ and Polyoxometalate Chemistry — Chelated Cobalt(III) Centers as Structural Components of Polyoxomolybdates — [{Co(en)}4Mo10O38]4‐ and Macrocyclic [{CoII(H2O)2}{Co (en)}8{Mo20O76}]6‐.
Authors: Belai Nebebech , Kapoor Pramesh N. , Dickman Michael H. , Butcher Raymond J. , Pope Michael T. 
Published: February 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Enhanced Activity and Stereoselectivity of Polystyrene‐Supported Proline‐Based Organic Catalysts for Direct Asymmetric Aldol Reaction in Water.
Authors: Gruttadauria Michelangelo , Salvo Anna Maria Pia , Giacalone Francesco , Agrigento Paola , Noto Renato 
Published: February 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Rhodium‐Catalyzed Homocoupling of (1‐Acyloxyvinyl)silanes: Synthesis of 1,3‐Diene‐2,3‐diyl Diesters and Their Derivatives.
Authors: Yue Yanni , Yamamoto Hiroki , Yamane Motoki 
Published: February 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Rh(II)‐Catalyzed Skeletal Reorganization of 1,6‐ and 1,7‐Enynes Through Electrophilic Activation of Alkynes.
Authors: Ota Kazusa , Lee Sang Ick , Tang Jhih‐Meng , Takachi Manabu , Nakai Hiromi , Morimoto Tsumoru , Sakurai Hitoshi , Kataoka Ken , Chatani Naoto 
Published: February 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Water Mediated Chemoselective Synthesis of 1,2‐Disubstituted Benzimidazoles Using o‐Phenylenediamine and the Extended Synthesis of Quinoxalines.
Authors: Wan Jie‐Ping , Gan Shi‐Feng , Wu Jian‐Mei , Pan Yuanjiang 
Published: February 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Anionic ortho‐Fries Rearrangement, a Facile Route to Arenol‐Based Mannich Bases.
Authors: Assimomytis Nikos , Sariyannis Yiannis , Stavropoulos Georgios , Tsoungas Petros G. , Varvounis George , Cordopatis Paul 
Published: February 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: The First Heterogeneous Carbonylative Stille Coupling of Organostannanes with Aryl Iodides Catalyzed by MCM‐41‐Supported Bidentate Phosphine Palladium(0) Complex.
Authors: Cai Mingzhong , Zheng Guomin , Ding Guodong 
Published: February 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Amberlyst‐15: A Mild, Efficient and Reusable Heterogeneous Catalyst for N‐tert‐Butoxycarbonylation of Amines.
Authors: Kumar K. Shiva , Iqbal Javed , Pal Manojit 
Published: February 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Direct Enantioselective Organocatalytic Hydroxymethylation of Aldehydes Catalyzed by α,α‐Diphenylprolinol Trimethylsilyl Ether.
Authors: Boeckman Robert K. Jr. , Miller John R. 
Published: February 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Asymmetric Copper(I)‐Catalyzed Henry Reaction with an Aminoindanol‐Derived Bisoxazolidine Ligand.
Authors: Spangler Kimberly Yearick , Wolf Christian 
Published: February 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: The Sulfinyl Moiety in Lewis Base Promoted Allylations.
Authors: Fulton J. Robin , Kamara Lamin M. , Morton Simon C. , Rowlands Gareth J. 
Published: February 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Novel Synthetic Methodologies. Part 187. Synthesis of α‐Aminonitriles Through Strecker Reaction of N‐Tosylaldimines Using Molecular Iodine.
Authors: Das Biswanath , Balasubramanyam Penagaluri , Krishnaiah Maddeboina , Veeranjaneyulu Boyapati , Reddy Gandolla Chinna 
Published: February 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: A New and Simple Synthesis of Sulfonyl Ureas from Sulfonamides and N‐Alkyl‐1,2,4‐dithiazolidine‐3,5‐diones.
Authors: Gessner Richard K. , Chibale Kelly 
Published: February 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Synthesis, Structures, and Characterizations of [ArTi(O‐i‐Pr)3]2 and Efficient Room‐Temperature Aryl—Aryl Coupling of Aryl Bromides with [ArTi(O‐i‐Pr)3]2 Catalyzed by the Economic Pd(OAc)2/PCy3 System.
Authors: Yang Hsu‐Tang , Zhou Shuangliu , Chang Feng‐Shuo , Chen Chi‐Ren , Gau Han‐Mou 
Published: February 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Rhodium/N‐Heterocyclic Carbene Catalyzed Direct Intermolecular Arylation of sp2 and sp3 C—H Bonds with Chelation Assistance.
Authors: Kim Min , Kwak Jaesung , Chang Sukbok 
Published: February 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Diastereo‐ and Enantioselective Synthesis of Functionalized β‐Lactams from Oxiranecarbaldimines and Lithium Ester Enolates.
Authors: Michel Kristin , Froehlich Roland , Wuerthwein Ernst‐Ulrich 
Published: February 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Synthesis of γ‐Lactols, γ‐Lactones and 1,4‐Monoprotected Succinaldehydes under Moderately Concentrated Sunlight.
Authors: Dondi Daniele , Protti Stefano , Albini Angelo , Carpio Sonia Manas , Fagnoni Maurizio 
Published: February 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Indirect Regioselective Heteroarylation of Indoles Through a Friedel—Crafts Reaction with (E)‐1,4‐Diaryl‐2‐buten‐1,4‐diones.
Authors: Blay Gonzalo , Fernandez Isabel , Monleon Alicia , Pedro Jose R. , Vila Carlos 
Published: February 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.