bluuebunny/crossref_metadata_2025_split huggingface dataset:
The delineation of an interdisciplinary specialty in terms of a journal set: The case of communication studies
Authors: Leydesdorff Loet , Probst Carole 
Published: March 2009

AbstractA journal set in an interdisciplinary or newly developing area can be determined by including the journals classified under the most relevant ISI Subject Categories into a journal–journal citation matrix. Despite the fuzzy character of borders, factor analysis of the citation patterns enables us to delineate the specific set by discarding the noise. This methodology is illustrated using communication studies as a hybrid development between political science and social psychology. The development can be visualized using animations which support the claim that a specific journal set in communication studies is increasingly developing, notably in the “being cited” patterns. The resulting set of 28 journals in communication studies is smaller and more focused than the 45 journals classified by the ISI Subject Categories as “Communication.” The proposed method is tested for its robustness by extending the relevant environments to sets including many more journals.
Are Web‐based informational queries changing?
Authors: Tann Chadwyn , Sanderson Mark 
Published: March 2009

AbstractThis brief communication describes the results of a questionnaire examining certain aspects of the Web‐based information seeking practices of university students. The results are contrasted with past work showing that queries to Web search engines can be assigned to one of a series of categories: navigational, informational, and transactional. The survey results suggest that a large group of queries, which in the past would have been classified as informational, have become at least partially navigational. We contend that this change has occurred because of the rise of large Web sites holding particular types of information, such as Wikipedia and the Internet Movie Database.
When to say when: can excessive drinking explain silicon uptake in diatoms?
Authors: Thamatrakoln Kimberlee , Kustka Adam B. 
Published: March 2009

AbstractDiatoms are the single most important drivers of the oceanic silicon biogeochemical cycle. Due to their considerable promise in nanotechnology, there is tremendous interest in understanding the mechanism by which they produce their intricately and ornately decorated silica‐based cell wall. Although specific proteins have been implicated in some of the key steps of silicification, the exact mechanisms are poorly understood.Silicon transporters, identified in both diatoms and silicoflagellates, are hypothesized to mediate silicon uptake. Recently, macropinocytosis, the non‐specific engulfment of extracellular fluid, was proposed as a more energetically favorable uptake mechanism, which can also explain the long‐observed effect of salinity on frustule morphology. We explore the bioenergetic, membrane recycling, and vacuolar volume requirements that must be satisfied for pinocytosis‐mediated silicon uptake. These calculated requirements contrast starkly with existing data on diatom physiology, uptake kinetics, growth, and ultrastructure, leading us to conclude that pinocytosis cannot be the primary mechanism of silicon uptake.
Phthalimide neovascular factor 1 (PNF1) modulates MT1‐MMP activity in human microvascular endothelial cells
Authors: Wieghaus Kristen A. , Gianchandani Erwin P. , Neal Rebekah A. , Paige Mikell A. , Brown Milton L. , Papin Jason A. , Botchwey Edward A. 
Published: March 2009

AbstractWe are creating synthetic pharmaceuticals with angiogenic activity and potential to promote vascular invasion. We previously demonstrated that one of these molecules, phthalimide neovascular factor 1 (PNF1), significantly expands microvascular networks in vivo following sustained release from poly(lactic‐co‐glycolic acid) (PLAGA) films. In addition, to probe PNF1 mode of action, we recently applied a novel pathway‐based compendium analysis to a multi‐timepoint, controlled microarray data set of PNF1‐treated (vs. control) human microvascular endothelial cells (HMVECs), and we identified induction of tumor necrosis factor‐alpha (TNF‐α) and, subsequently, transforming growth factor‐beta (TGF‐β) signaling networks by PNF1. Here we validate this microarray data set with quantitative real‐time polymerase chain reaction (RT‐PCR) analysis. Subsequently, we probe this data set and identify three specific TGF‐β‐induced genes with regulation by PNF1 conserved over multiple timepoints—amyloid beta (A4) precursor protein (APP), early growth response 1 (EGR‐1), and matrix metalloproteinase 14 (MMP14 or MT1‐MMP)—that are also implicated in angiogenesis. We further focus on MMP14 given its unique role in angiogenesis, and we validate MT1‐MMP modulation by PNF1 with an in vitro fluorescence assay that demonstrates the direct effects that PNF1 exerts on functional metalloproteinase activity. We also utilize endothelial cord formation in collagen gels to show that PNF1‐induced stimulation of endothelial cord network formation in vitro is in some way MT1‐MMP‐dependent. Ultimately, this new network analysis of our transcriptional footprint characterizing PNF1 activity 1–48 h post‐supplementation in HMVECs coupled with corresponding validating experiments suggests a key set of a few specific targets that are involved in PNF1 mode of action and important for successful promotion of the neovascularization that we have observed by the drug in vivo. Biotechnol. Bioeng. 2009;103: 796–807. © 2009 Wiley Periodicals, Inc.
Stereospecific high‐performance liquid chromatography of taxifolin, applications in pharmacokinetics, and determination in tu fu ling (Rhizoma smilacis glabrae) and apple (Malus × domestica)
Authors: Vega‐Villa Karina R. , Remsberg Connie M. , Ohgami Yusuke , Yáñez Jaime A. , Takemoto Jody K. , Andrews Preston K. , Davies Neal M. 
Published: March 2009

AbstractA stereospecific method of analysis of racemic taxifolin (+/−3,5,7,3′,4′‐pentahydroxyflavanone) in biological fluids is necessary to study pharmacokinetics and disposition in fruit and herbs. A simple high‐performance liquid chromatographic method was developed for the determination of all four taxifolin enantiomers. Separation was achieved on a Chiralcel® OJ‐RH column with UV detection at 288 nm. The standard curves in serum were linear over a range of 0.5–100.0 µg/mL for each enantiomer. The mean extraction efficiency was >88.0%. Precision of the assay was <15% (CV), and was within 12% at the limit of quantitation (0.5 µg/mL). The bias of the assay was <15%, and was within 6% at the limit of quantitation. The assay was successfully applied to stereospecific disposition of taxifolin enantiomers in rats and to the quantification of taxifolin enantiomers in tu fu ling (Rhizoma smilacis glabrae) and apple (Malus × domestica). Copyright © 2009 John Wiley & Sons, Ltd.
Influence of xylan on the enzymatic hydrolysis of steam‐pretreated corn stover and hybrid poplar
Authors: Bura Renata , Chandra Richard , Saddler Jack 
Published: March 2009

AbstractThe focus of this study was to alter the xylan content of corn stover and poplar using SO2‐catalyzed steam pretreatment to determine the effect on subsequent hydrolysis by commercial cellulase preparations supplemented with or without xylanases. Steam pretreated solids with xylan contents ranging from ∼1 to 19% (w/w) were produced. Higher xylan contents and improved hemicellulose recoveries were obtained with solids pretreated at lower severities or without SO2‐addition prior to pretreatment. The pretreated solids with low xylan content (<4% (w/w)) were characterized by fast and complete cellulose to glucose conversion when utilizing cellulases. Commercial cellulases required xylanase supplementation for effective hydrolysis of pretreated substrates containing higher amounts of xylan. It was apparent that the xylan content influenced both the enzyme requirements for hydrolysis and the recovery of sugars during the pretreatment process. © 2009 American Institute of Chemical Engineers Biotechnol. Prog., 2009
Consumer advisors revisited: What drives those with market mavenism and opinion leadership tendencies and why?
Authors: Stokburger‐Sauer Nicola E. , Hoyer Wayne D. 
Published: March 2009

Abstract

Consumers with a tendency toward market mavenism (MM) and opinion leadership (OL) represent powerful forces in the marketplace because of their influence on other consumers' consumption decisions. They are thus important consumer groups for both other individuals and companies.

Little is known, however, about the motives that drive these individuals. Additionally, research has not explored the consequences of the market mavenism tendency (MMT) and OL.

Research is thus needed to tap into and compare factors that influence MMT and OL as well as variables that are influenced by MMT and OL. A key goal of the current study is to determine whether individuals with a tendency toward MM and opinion leaders are consumers who are more or less satisfied and loyal than other consumers.

This study investigates product involvement and need for variety (NFV) as antecedents of MMT and OL and looks into their relationship with satisfaction and loyalty.

Using data from 1145 German consumers in four product categories (i.e., wine, clothing, cars, and cameras) and applying structural equation modeling, it was found that opinion leaders have higher levels of product category involvement than individuals with a tendency toward mavenism, while the latter have a higher NFV than opinion leaders. Finally, opinion leaders and individuals with a tendency toward mavenism have higher levels of satisfaction, and the first are more loyal consumers, but this varies across product categories.

Important implications for marketing theory and marketing practice can be derived. Individuals with a tendency toward MM and/or opinion leaders could, for instance, be integrated as powerful sources in the context of co‐producing products and services.

Copyright © 2009 John Wiley & Sons, Ltd.
Metallosupramolecular Complexes Derived from Bis(benzene‐o‐dithiol) Ligands
Authors: Birkmann Birgit , Ehlers Andreas W. , Fröhlich Roland , Lammertsma Koop , Hahn F. Ekkehardt 
Published: March 2009

AbstractMesocomplex versus helicate: A naphthalene‐bridged bis(benzene‐o‐dithiol) ligand reacts with Ti4+to give both dinuclear triple‐strandedmesocomplexes and helicates, depending on the counterion employed during synthesis. DFT calculations performed with a simplified complex revealed that the interconversion of Λ to its Δ enantiomer proceeds via aC3h‐symmetric transition state (see figure).magnified imageContrary to its catechol analogue, the 1,5‐naphthalenediamido‐bridged bis(benzene‐o‐dithiol) ligand H4‐3does not yield [Ti4L6]8−clusters when reacted with Ti4+starting materials, but instead gives dinuclear, triple‐stranded complexes of type [Ti2L3]4−. The molecular structures of such complexes differ depending on the size of the counterions employed. The formation of bothmesocomplexes (Λ,Δ or Δ,Λ isomers) and of dinuclear triple‐stranded helicates (Λ,Λ or Δ,Δ isomers) was observed. Molecular‐modeling calculations show energetically close minima for themesocomplex and the corresponding helicate. In spite of the structural differences in the solid state, proton NMR spectra revealC3symmetry for all three complex anions. Metal–donor interactions mainly dictate the coordination behavior, whereas the topology of the ligand has less influence. In addition, the dinuclear complex [Ti2(8)3]4−with the unsymmetrical bis(benzene‐o‐dithiol) ligand H4‐8has been prepared. The unsymmetrical ligand can lead to four different stereoisomers when forming dinuclear triple‐stranded complexes of type [Ti2(8)3]4−, two of which have been observed in solution.
Cover Picture: Organocatalytic Domino Michael–Knoevenagel Condensation Reaction for the Synthesis of Optically Active 3‐Diethoxyphosphoryl‐2‐oxocyclohex‐3‐enecarboxylates (Chem. Eur. J. 13/2009)
Authors: Albrecht Łukasz , Richter Bo , Vila Carlos , Krawczyk Henryk , Jørgensen Karl Anker 
Published: March 2009

AbstractIn Buddhist imagery the gestures of the hand are very significant, which reflects the themes of asymmetry and chirality (derived from the word “hand”) found in the Full Paper by K. A. Jørgensen et al. on page 3093 ff. The professor is shown as a Buddha‐like image and is gesturing down with one hand and making the Buddhist gesture for “method and wisdom” with the other. Dice tumbling from his hand represent the organocatalytic Michael–Knoevenagel condensation domino reaction discussed in the paper, with the front die representing the cyclohexenone center of the molecule being formed. The two students standing by are making Buddhist gestures for “accomplishment” and “meditation”. Artwork by cartoonist Jorge Cham, http://www.phdcomics.com.magnified image
ChemInform Abstract: Fabrication of Mesoporous CdTe/ZnO@SiO2 Core/Shell Nanostructures with Tunable Dual Emission and Ultrasensitive Fluorescence Response to Metal Ions.
Authors: Song Yingying , Cao Xuebo , Guo Yang , Chen Peng , Zhao Qingrui , Shen Guozhen 
Published: March 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 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: Crystal Structure and Physical Properties of the New Selenide—Tellurides Ba3Cu17‐x(Se,Te)11.
Authors: Kuropatwa Bryan , Cui Yanjie , Assoud Abdeljalil , Kleinke Holger 
Published: March 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 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: Crystal and Magnetic Structures of the Brownmillerite Compound Ca2Fe1.039(8)Mn0.962(8)O5.
Authors: Ramezanipour Farshid , Cowie Bradley , Derakhshan Shahab , Greedan John E. , Cranswick Lachlan M. D. 
Published: March 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 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: Alternative Li‐Ion Battery Electrode Based on Self‐Organized Titania Nanotubes.
Authors: Ortiz Gregorio F. , Hanzu Ilie , Djenizian Thierry , Lavela Pedro , Tirado Jose L. , Knauth Philippe 
Published: March 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 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 Group of New Selenite‐Chlorides of Strontium and d‐Metals (Co,Ni): Synthesis, Thermal Behavior and Crystal Chemistry.
Authors: Berdonosov Peter S. , Olenev Andrey V. , Kuznetsov Alexei N. , Dolgikh Valery A. 
Published: March 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 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, Structure Determination, and Infrared Spectroscopy of (NpO2)2(SO4)(H2O)4: Prevalence of Cation—Cation Interactions and Cationic Nets in Neptunyl Sulfate Compounds.
Authors: Forbes T. Z. , Burns P. C. 
Published: March 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 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: Transition Metal Tetramolybdate Dihydrates MMo4O13×2H2O (M: Co, Ni) Having a Novel Pillared Layer Structure.
Authors: Eda Kazuo , Ohshiro Yu , Nagai Noriko , Sotani Noriyuki , Whittingham M. Stanley 
Published: March 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 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 Five‐ and Six‐Membered‐Ring Compounds by Environmentally Friendly Radical Cyclization Using Kolbe Electrolysis.
Authors: Lebreux Frederic , Buzzo Ferdinando , Marko Istvan E. 
Published: March 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 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: Tandem Conjugate Addition—Elimination Reaction Promoted by Chiral Pyrrolidinyl Sulfonamide (CPS).
Authors: Xu Junye , Fu Xiao , Low Ruijuan , Goh Yong‐Peng , Jiang Zhiyong , Tan Choon‐Hong 
Published: March 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 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: Microwave‐Assisted Parallel Synthesis of Fused Heterocycles in a Novel Parallel Multimode Reactor.
Authors: Treu Matthias , Karner Thomas , Kousek Roland , Berger Helmut , Mayer Moriz , McConnell Darryl B. , Stadler Alexander 
Published: March 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 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: Radical Allylation with α‐Branched Allyl Sulfones.
Authors: Charrier Nicolas , Zard Samir Z. 
Published: March 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 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 Novel Type of N‐Formylation and Related Reactions of Amines via Cyanides and Esters as Formylating Agents.
Authors: Bao Kai , Zhang Weige , Bu Xiujuan , Song Zhichun , Zhang Liang , Cheng Maosheng 
Published: March 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 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: Reductive Amination of Ketones with Ammonia on the Surface of an Adsorbent.
Authors: Sviridova Lyudmila A. , Golubeva Galina A. , Tavtorkin Alexander N. , Peregudov Alexander S. , Kochetkov Konstantin A. 
Published: March 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 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: Development of Highly Chemoselective Bulky Zincate Complex, tBu4ZnLi2: Design, Structure, and Practical Applications in Small‐/Macromolecular Synthesis.
Authors: Furuyama Taniyuki , Yonehara Mitsuhiro , Arimoto Sho , Kobayashi Minoru , Matsumoto Yotaro , Uchiyama Masanobu 
Published: March 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 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: Acceleration Effect of an Allylic Hydroxy Group on Ring‐Closing Enyne Metathesis of Terminal Alkynes: Scope, Application, and Mechanistic Insights.
Authors: Imahori Tatsushi , Ojima Hidetomo , Yoshimura Yuichi , Takahata Hiroki 
Published: March 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 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: Rational Design of Sugar‐Based Surfactant Combined Catalysts for Promoting Glycerol as a Solvent.
Authors: Karam Ayman , Villandier Nicolas , Delample Mathieu , Klein Koerkamp Carmen , Douliez Jean‐Paul , Granet Robert , Krausz Pierre , Barrault Joel , Jerome Francois 
Published: March 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 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: Unexpected Catalysis: Aprotic Pyridinium Ions as Active and Recyclable Broensted Acid Catalysts in Protic Media.
Authors: Procuranti Barbara , Connon Stephen J. 
Published: March 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 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: o‐Benzenedisulfonimide as a Soft, Efficient, and Recyclable Catalyst for the Acylation of Alcohols, Phenols, and Thiols under Solvent‐Free Conditions: Advantages and Limitations.
Authors: Barbero Margherita , Cadamuro Silvano , Dughera Stefano , Venturello Paolo 
Published: March 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 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: Substituent Effect on the Formation and Reactivity of Platinum Carbenoids.
Authors: Cho Eun Jin , Lee Daesung 
Published: March 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 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 Convenient Allylic Functionalization of Bis(prop‐2‐enyl)methanol by Direct Trimetallation.
Authors: Bigot Aurelien , Breit Bernhard 
Published: March 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 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.