bluuebunny/crossref_metadata_2025_split huggingface dataset:
Broensted Acid Promoted Cyclizations of Siloxy Alkynes with Unactivated Arenes, Alkenes, and Alkynes.
Authors: Zhang Liming , Sun Jianwei , Kozmin Sergey A. 
Published: February 2007

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, please click on HTML or PDF.
Novel C—C Bond Cleavage from Arylacetonitriles in Alcohols to Aryl Carboxylic Esters Using Potassium Iodide and Catalytic Amount of Samarium.
Authors: Yu Mingxin , Wen Weijiang , Wang Zhiyuan 
Published: February 2007

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, please click on HTML or PDF.
Synthesis of 2‐(2‐Arylethenyl)‐5‐arylfurans by Regioselective Palladium(0)‐Catalyzed Coupling Reactions of 2‐(2‐Bromo‐2‐nitroethenyl)‐5‐bromofuran.
Authors: Tuan Dang Thanh , Tung Dang Thanh , Langer Peter 
Published: February 2007

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, please click on HTML or PDF.
Palladium‐Catalyzed Intramolecular Enolate O‐Arylation and Thio‐Enolate S‐Arylation: Synthesis of Benzo[b]furans and Benzo[b]thiophenes.
Authors: Willis Michael C. , Taylor Dawn , Gillmore Adam T. 
Published: February 2007

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, please click on HTML or PDF.
Unexpected Ring Closure Between Hydrazono and Nitro Groups: A Useful Synthesis of Substituted Pyrazole N‐Oxides.
Authors: Attanasi Orazio A. , Favi Gianfranco , Filippone Paolino , Giorgi Gianluca , Lillini Samuele , Mantellini Fabio , Perrulli Francesca R. 
Published: February 2007

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, please click on HTML or PDF.
Reactions of Cyclopropyl Aryl Ketones with α‐Ketoacetic Acids Catalyzed by C8F17SO3H in Fluorous Phase.
Authors: Yang Yong‐Hua , Liu Ying‐Hao , Shi Min 
Published: February 2007

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, please click on HTML or PDF.
A Stereocontrolled Access to Ring‐Fused Piperidines Through a Formal [2 + 2 + 2] Process.
Authors: Godineau Edouard , Schaefer Christian , Landais Yannick 
Published: February 2007

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, please click on HTML or PDF.
Synthesis, Stability Studies, Antiinflammatory Activity and Ulcerogenicity of Morpholinoalkyl Ester Prodrugs of Niflumic Acid.
Authors: Talath Sirajunisa , Gadad Andanappa K. 
Published: February 2007

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, please click on HTML or PDF.
General and Easy Access to 11‐Substituted 4‐Hydroxy‐2,3,4,5‐tetrahydro[1,4]diazepino[1,2‐a]indol‐1‐one Derivatives.
Authors: Putey Aurelien , Fournet Guy , Joseph Benoit 
Published: February 2007

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, please click on HTML or PDF.
Synthesis of Primary Arylselenoamides by Reaction of Aryl Nitriles with Woollins′ Reagent.
Authors: Hua Guoxiong , Li Yang , Slawin Alexandra M. Z. , Woollins J. Derek 
Published: February 2007

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, please click on HTML or PDF.
A Novel Synthesis of the 2‐Aminoimidazol‐4‐carbaldehyde Derivatives, Versatile Synthetic Intermediates for 2‐Aminoimidazole Alkaloids.
Authors: Ando Naoki , Terashima Shiro 
Published: February 2007

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, please click on HTML or PDF.
Tetra‐tert‐butylethylene, Fantasy, Fake, or Reality?
Authors: Lenoir Dieter , Wattenbach Carsten , Liebman Joel F. 
Published: February 2007

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, please click on HTML or PDF.
Mono‐ and Heterodimetallic FeII and RuII Complexes Based on a Novel Heteroditopic 4′‐{Bis(phosphanyl)aryl}‐2,2′:6′,2″‐terpyridine Ligand
Authors: Gagliardo Marcella , Perelaer Jolke , Hartl František , van Klink Gerard P. M. , van Koten Gerard 
Published: February 2007

AbstractIn the search for a versatile building block that allows the preparation of heteroditopic tpy‐pincer bridging ligands, the synthon {4′‐[C6H3(CH2Br)2‐3,5]‐2,2′:6′,2″‐terpyridine} was synthesized. Facile introduction of diphenylphosphanyl groups in this synthon gave the ligand {4′‐[C6H3(CH2PPh2)2‐3,5]‐2,2′:6′,2″‐terpyridine} ([tpyPC(H)P]). The asymmetric mononuclear complex [Fe(tpy){tpyPC(H)P}](PF6)2, prepared by selective coordination of [Fe(tpy)Cl3] to the tpy moiety of [tpyPC(H)P], was used for the synthesis of the heterodimetallic complex [Fe(tpy)(tpyPCP)Ru(tpy)](PF6)3, which applies the “complex as ligand” approach. Coordination of the ruthenium centre at the PC(H)P‐pincer moiety of [Fe(tpy){tpyPC(H)P}](PF6)2 has been achieved by applying a transcyclometallation procedure. The ground‐state electronic properties of both complexes, investigated by cyclic and square‐wave voltammetries and UV/Vis spectroscopy, are discussed and compared with those of [Fe(tpy)2](PF6)2 and [Ru(PCP)(tpy)]Cl, which represent the mononuclear components of the heterodinuclear species. An in situ UV/Vis spectroelectrochemical study was performed in order to localize the oxidation and reduction steps and to gain information about the FeII–RuII communication in the heterodimetallic system [Fe(tpy)(tpyPCP)Ru(tpy)](PF6)3 mediated by the bridging ligand [tpyPCP]. Both the voltammetric and spectroelectrochemical results point to only very limited electronic interaction between the metal centres in the ground state. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2007)
N‐(Aryl)picolinamide Complexes of Ruthenium: Usual Coordination and Strategic Cyclometalation
Authors: Nag Sumon , Butcher Ray J. , Bhattacharya Samaresh 
Published: February 2007

AbstractReaction of five N‐(4‐R‐phenyl)picolinamides (R = OCH3, CH3, H, Cl, and NO2) with [Ru(PPh3)2(CO)2Cl2] in refluxing 2‐methoxyethanol in the presence of a base (NEt3) affords two geometrical isomers of a group of complexes (1‐R and 2‐R), each of which contains an amide ligand coordinated to the metal center as a monoanionic bidentate N,N donor along with two triphenylphosphanes, a carbonyl, and a hydride. Similar reaction of N‐(naphthyl)picolinamide with [Ru(PPh3)2(CO)2Cl2] affords an organometallic complex, 3, in which the amide ligand is coordinated to the metal center, by C–H activation of the naphthyl ring at the 8‐position, as a dianionic tridentate N,N,C donor along with two triphenylphosphanes and one carbonyl. Structures of the 1‐OCH3, 2‐CH3, and 3 complexes have been determined by X‐ray crystallography. In all the complexes the two triphenylphosphanes are trans. In the 1‐R complexes the hydride is trans to the pyridine nitrogen and in the 2‐R complexes it is trans to the amide‐nitrogen. All the complexes are diamagnetic, and show characteristic 1H NMR signals and intense MLCT transitions in the visible region. Cyclic voltammetry on all the complexes shows a RuII–RuIII oxidation within 0.71–0.93 V versus SCE. An oxidation and a reduction of the coordinated amide ligand are also observed within 1.29–1.69 V versus SCE and –1.02 to –1.21 V versus SCE respectively.(© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2007)
Selective Oxidation of Unprotected Carbohydrates to Aldehyde Analogues by Using TEMPO Salts
Authors: Breton Tony , Bashiardes George , Léger Jean‐Michel , Kokoh Kouakou B. 
Published: February 2007

AbstractThe primary alcohol function of essentially unprotected carbohydrates (methyl‐α‐D‐mannopyranoside, methyl‐α‐D‐glucopyranoside and methyl‐α‐D‐galactopyranoside) was selectively converted into the corresponding aldehyde in the form of acetals by using TEMPO+ BF4– (2,2,6,6‐tetramethylpiperidine‐1‐oxoammonium tetrafluoroborate) in organic medium with 2,6‐lutidine as the base. Indeed, organic anhydrous conditions prevent over oxidation of the alcohol group to the carboxylate form. The resulting compounds, methyl‐α‐D‐glucohexodialdo‐1,5‐pyranoside and methyl‐α‐D‐manohexodialdo‐1,5‐pyranoside were characterized by NMR and mass spectrometry. Additionally, the results obtained in a TEMPO electrochemically mediated system were compared with those of the pure TEMPO+ BF4– system, but lower yields were attained under the electrochemical conditions as a result of a very slow reaction rate. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2007)
Use of the Brief Smell Identification Test for olfactory deficit in a Norwegian population with Alzheimer's disease
Authors: Kjelvik Grete , Sando Sigrid Botne , Aasly Jan , Engedal Knut A. , White Linda R. 
Published: February 2007

AbstractAimsSeveral studies have shown that Alzheimer's disease (AD) is associated with hyposmia. Olfactory identification may be a cheap and simple additional test in the assessment of early cognitive changes. The sense of smell is influenced by factors such as experience and culture and the aim of the present study was to assess the validity of the Brief Smell Identification Test (B‐SIT) in distinguishing patients with AD from healthy gender and age‐matched controls in a Norwegian population.MethodsThe study included 39 patients with a diagnosis of probable AD, and 52 gender and age‐matched controls. Olfactory function was assessed with B‐SIT, and a non‐standardized olfactory identification task (freshly ground coffee).ResultsThe difference in olfactory performance between patients and controls was highly significant, both for the whole AD patient group and the subgroup of patients with MMSE ≥ 24. Receiver operating curve (ROC) analyses indicated that B‐SIT distinguished patients from controls with high sensitivity and specificity. All the odours in B‐SIT with the exception of turpentine showed highly significant differences between patients and controls. AD‐associated memory impairment did not seem to affect the answers given for B‐SIT in this population.ConclusionsFor patients with AD, the Brief Smell Identification Test (B‐SIT) appears to be well‐suited for detecting a deficit in olfactory identification in a Norwegian population. Copyright © 2007 John Wiley & Sons, Ltd.
John Wiley & Sons: 200th anniversary!
Authors: Thoß Andreas 
Published: February 2007

AbstractThis year, the publisher John Wiley & Sons celebrates its 200th anniversary. When Charles Wiley first opened his print shop in lower Manhattan in 1807, America was a young nation, full of potential and seeking its cultural identity on the global stage. Wiley was there, contributing to the emerging American literary tradition by publishing such great 19th century American writers as James Fenimore Cooper, Washington Irving, Herman Melville, and Edgar Allan Poe. Later on, Wiley published the works of outstanding European writers such as Hans Christian Andersen, Charles Dickens, John Ruskin, and Elizabeth Barrett Browning. Yet, during the second industrial revolution – and its resulting knowledge revolution – Wiley abandoned its literary programme to pursue knowledge publishing for a global community. Today Wiley publishes a broad variety of journals, encyclopedias, books, and online products. The spectrum reaches from medicine to astronomy, from trade journals to consumer books and it includes educational materials for students as well as for lifelong learners.Since 1807, the world has seen 41 U.S. Presidents, but there have only been ten Wiley Presidents. Today, Wiley is a publicly held, independently managed family business. That is the formula of success that has sustained the company for two centuries. In 2007 Wiley is one of the major global publishers with more than one billion dollar revenue and about 3.900 employees. This will increase even more, when the acquisition of Blackwell Publishing will be completed in 2007.Aged only three years, the Laser Technik Journal is one of the youngest among the Wiley Journals. But it fits well in the history of Wiley. Thomas Alva Edison, the “Wizard of Menlo Park”, held William H. Wiley in high regard, and so there is a long tradition of close contacts between the publishing house and the engineering community. The purpose of the journals has changed little: Our mission is to provide the community with up to date information on the latest in technology, reports and discussions on trends and markets, and finally the journal serves as a forum for key people from science and business to share their visions and experiences.2007 will be a great year not only for Wiley, but for the laser community as well. Company reports from Coherent, Trumpf or Rofin Sinar show two‐digit growths and excellent earnings. Record numbers are expected also at conferences and trade shows. At Photonics West in San Jose, CA, 1.000 exhibitors and more than 15.000 visitors are expected. The Laser. World of Photonics 2007 in Munich (June) will be even bigger. It is a “can't miss” event particularly for those visitors interested in Laser material processing. The Laser Technik Journal will be on both shows. Please stop by at the Wiley booth, for a chat or to see the latest from the Wiley book program!
Laser Micro Processing using short Laser Pulses
Authors: Klug Ulrich , Siegel Frank 
Published: February 2007

AbstractPulsed laser radiation is a powerful tool for micro machining of different materials. The laser beam can be focused to spot diameters in the micron range. Depending on the material properties (e.g. heat conductivity), the thermal influence can be limited by using different pulse duration between nanoseconds (10–9 s) and femtoseconds (10–15 s).
Numerical modelling of turbulent flow through spillway with gated operation
Authors: Bhajantri M. R. , Eldho T. I. , Deolalikar P. B. 
Published: February 2007

AbstractNumerical simulation of rapidly varied, free surface turbulent flow over spillway with the existence of both sub‐critical and super‐critical flow regimes is a challenging task. Vertical acceleration plays a dominant role in the spillway flows. This paper describes the formulation and development of a numerical model for flow over the spillway. The computer model is developed using the finite volume method based on weakly compressible flow equations and large Eddy simulation (LES)‐based turbulence model. The model is applied to a real world case study of partial gate operation of sluice spillway to investigate the hydraulic characteristics by simulating the velocity distribution, pressure distribution and discharge characteristics. Numerical modelling of sluice spillway is complicated because both moving free surface region and fixed conduit pressure flow in the sluice barrel are present. The numerical model results are compared with the physical model study. The simulated results are in close agreement with the measured values. Copyright © 2007 John Wiley & Sons, Ltd.
Synthesis and characterization of optically active star‐shaped poly (N‐phenylmaleimide)s with a calixarene core
Authors: Lou Liping , Jiang Liming , Liu Jianzhao , Sun Weilin , Shen Zhiquan 
Published: February 2007

AbstractTwo N‐phenylmaleimide derivatives bearing a chiral oxazoline group, N‐[o‐(4‐phenyl‐4,5‐dihydro‐1,3‐oxazol‐2‐yl)phenyl]maleimide [(R)‐PhOPMI] and N‐[o‐(4‐isopropyl‐4,5‐dihydro‐1,3‐oxazol‐2‐yl)phenyl]maleimide [(S)‐PriOPMI], were polymerized using in situ generated calixarene‐based phenates as initiators to yield optically active polymers. The formation of star‐shaped architectures was strongly dependent on both polymerization conditions and calixarene moieties. In the case of polymerization conducted in toluene at 80–100 °C, the arm‐chain numbers achieved their respective maxima for the polymers with these multifunctional initiators. In contrast, the polymers obtained in polymerizations at lower temperature possessed fewer arm chains. The structure and chiroptical properties were investigated on the basis of 13C NMR, multiangular laser light scattering, gel permeation chromatography, and circular dichroism for the macromolecules with calixarene cores. Copyright © 2006 Society of Chemical Industry
Genome‐wide linkage analysis for aggressive prostate cancer in Utah high‐risk pedigrees
Authors: Christensen G.B. , Camp N.J. , Farnham J.M. , Cannon‐Albright L.A. 
Published: February 2007

AbstractBACKGROUNDIt has been proposed that studying alternative phenotypes, such as tumor aggressiveness, may be a solution for overcoming the apparent heterogeneity that has hindered the identification of prostate cancer (PC) genes. We present the results of a genome‐scan for predisposition to aggressive PC using the Utah high‐risk pedigree resource.METHODSWe identified 259 subjects with aggressive PC in 57 extended and nuclear families. Parametric and non‐parametric multipoint linkage statistics were calculated for a genome‐wide set of 401 microsatellite markers using the MCLINK software package. Stratification analyses by the number of affected subjects per pedigree (<5, ≥5) and the average age at diagnosis of affected subjects (<70 years, ≥70 years) were also performed.RESULTSNo significant results were observed at the genome‐wide level, but suggestive evidence for linkage was observed on chromosomes 9q (HLOD = 2.04) and 14q (HLOD = 2.08); several pedigrees showed individual evidence for linkage at each locus (LOD > 0.58). The subset of pedigrees with earlier age at onset demonstrated nominal linkage evidence on chromosomes 3q (HLOD = 1.79), 8q (HLOD = 1.67), and 20q (HLOD=1.82). The late‐onset subset showed suggestive linkage on chromosome 6p (HLOD = 2.37) and the subset of pedigrees with fewer than five affected subjects showed suggestive linkage on chromosome 10p (HLOD = 1.99).CONCLUSIONSLinkage evidence observed on chromosomes 6p, 8q, and 20q support previously reported PC aggressiveness loci. While these results are encouraging, further research is necessary to identify the gene or genes responsible for PC aggressiveness and surmount the overarching problem of PC heterogeneity. Prostate 67: 605–613, 2007. © 2007 Wiley‐Liss, Inc.
Scaling analysis of field‐enhanced bandtail hopping transport in amorphous carbon nitride
Authors: Godet C. , Kleider J. P. , Gudovskikh A. S. 
Published: February 2007

AbstractHopping transport within a bandtail distribution of localized electronic states has been investigated in amorphous carbon nitride (a‐C1–x Nx :H, x = 0.23) as a function of temperature T and electric field F. The conductivity σ follows Mott's law in the ohmic regime, i.e. ln (σohmic) varies linearly with T–1/4, while at higher field, a scaling law, ln (σ /σohmic) = φ [FS /T ] with S = 0.67 (±0.05), is found. Data are fully consistent with a field‐enhanced bandtail hopping (FBTH) model in which the effective temperature concept describes the non‐equilibrium occupation probability of tail states. A “filling rate” method, considering forward non‐activated hopping transitions, is developed to analyze the high field regime of FBTH. For an exponential distribution with disorder energy E0, increasing F shifts the transport energy EDL towards shallower tail states, with a density of states N (EDL) ∼ (F)3 (E0)–4. In this model, FBTH is parametrized using ln σ (T, F) vs T–1/4 plots, which provide field‐dependent apparent values of prefactor (ln σ00) and slope (T01/4). As F increases, both parameters strongly decrease. This behavior (observed in a‐C1–x Nx :H, x = 0.23, for F > 5 × 104 V cm–1) is a signature of band tail hopping transport. Our FBTH model predicts a minimum value $ \sigma^{00}_{\rm min} $ of σ00(F), which is indeed observed in a‐C1–x Nx :H (x = 0.23) for T < 70 K ($ kT^*_{\rm eff} $ ≈ 10–6 S cm–1 at Fmin ≈ 3 × 105 V cm–1). Near Fmin, kT *eff = (1/kTeff – 1/E0)–1 is parametrized by kT *eff ∼ Fq. The value of q that best reproduces the experimental results, q = 0.7 ± 0.1, is consistent with the scaling exponent S = 0.67 and with the density of states parameters deduced from the Ohmic regime. Hence, this “filling rate” method applied to FBTH transport appears to be very useful to analyze the apparent prefactor σ00(F) and to derive the effective temperature Teff(T, F) which governs bandtail states occupation and FBTH conductivity. (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
Phase transitions in the two‐dimensional Falicov–Kimball model on the triangular lattice
Authors: Čenčariková Hana , Farkašovský Pavol 
Published: February 2007

AbstractA recently developed numerical method, based on the modification of exact diagonalization calculations, is used to study the ground‐state properties of the spinless Falicov–Kimball model on the triangular lattice. The phase diagram as well as the valence and metal–insulator transitions are analysed and compared with results of the conventional Falicov–Kimball model on the square lattice. It is shown that the different cluster geometry leads to various changes in basic characteristics of the model. In particular, the triangular lattice destroys the symmetry of the phase diagram as well as the valence transitions, and stabilizes the new types of spatial charge ordering – the axial stripes and the phase separated distributions of localized f ‐electrons. Studying the conducting properties of the Falicov–Kimball model on the triangular lattice, the Mott‐Hubbard transition has been observed. (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
Using Internet nodes and routers onboard satellites
Authors: Wood L. , Ivancic W. , Hodgson D. , Miller E. , Conner B. , Lynch S. , Jackson C. , da Silva Curiel A. , Cooke D. , Shell D. , Walke J. , Stewart D. 
Published: February 2007

AbstractAn Internet router was integrated into the UK‐DMC remote‐sensing satellite as a secondary experimental payload. This commercial product has been orbiting in space for over three years. We describe the integration of the router and satellite and the successful on‐orbit testing of the router, which took place using the Virtual Mission Operations Center (VMOC) application as part of a larger systems internetworking exercise. Placing this Cisco router in Low Earth Orbit (CLEO) onboard a small satellite is one step towards extending the terrestrial networking model to the near‐Earth space environment as part of a merged space–ground architecture. Copyright © 2007 John Wiley & Sons, Ltd.
Motivating biomorphic constructions based on complex systems science
Authors: Joye Yannick , Van Locke Philip 
Published: February 2007

AbstractThere is evidence that the human brain consists of a specialized subsystem for processing natural stimuli. This hypothesis is related to research showing that certain classes of living things cause aesthetic and restorative responses. This body of evidence is used to support biomorphic approaches to art and construction. Different examples of such biomorphic proposals are presented, based on core principles of complex systems theory. Copyright © 2007 John Wiley & Sons, Ltd.