bluuebunny/crossref_metadata_2025 huggingface dataset:
Synthesis and characterization of air‐stable magnetic Fe composites microspheres of narrow size distribution
Authors: Shpaisman Nava , Margel Shlomo
Published: October 2007

Air‐stable Fe magnetic nanoparticles entrapped within carbon and porous crosslinked polystyrene microspheres of narrow size distribution were prepared by the following sequential steps: (1) Polystyrene/poly(divinyl benzene) and polystyrene/poly(styrene‐divinyl benzene) uniform micrometer‐sized composite particles were prepared by a single‐step swelling of uniform polystyrene template microspheres dispersed in an aqueous continuous phase with emulsion droplets of dibutyl phthalate containing the monomers divinyl benzene and styrene and the initiator benzoyl peroxide. The monomers within the swollen polystyrene template microspheres were then polymerized by raising the temperature to 73°C; (2) Porous poly (divinyl benzene) and poly(styrene‐divinyl benzene) uniform crosslinked microspheres were prepared by dissolution of the polystyrene template part of the former composite particles; (3) Uniform magnetic poly(divinyl benzene)/Fe and poly(styrene‐divinyl benzene)/Fe composite microspheres were prepared by entrapping Fe(CO)5 within the porous crosslinked microspheres, by suction of the Fe complex into the dried porous particles, followed by decomposition of the encapsulated Fe(CO)5 at 200°C in Ar atmosphere; (4) Uniform magnetic air‐stable C/Fe composite microspheres were prepared similarly, apart from changing the decomposition temperature from 200 to 600°C. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci, 2008
The effect of carbon fiber content on the friction and wear properties of carbon fiber reinforced polyimide composites
Authors: Li Jian , Cheng Xianhua
Published: October 2007

The current study examines the tribological performance of polyimide and carbon fiber reinforced polyimide (CF/PI) under dry sliding condition. Different contents of carbon fibers were employed as reinforcement. All filled and unfilled polyimide composites were tested against CGr15 ball and representative testing was performed. The effects of carbon fiber content on tribological properties of the composites were investigated. The worn surface morphologies of neat PI and its composites were examined by scanning electron microscopy and the wear mechanisms were discussed. Moreover, all filled polyimides have superior tribological characteristics to unfilled polyimides. The optimum wear reduction was obtained when the content of carbon fiber is 20 vol %. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci, 2008
Influence of an hyperbranched aliphatic polyester on the cure kinetic of a trifunctional epoxy resin
Authors: Frigione Mariaenrica , Calò Emanuela
Published: October 2007

The influence of an OH‐terminated hyperbranched aliphatic polyester on the reaction kinetics and rheology of a trifunctional triglycidyl‐p‐aminophenol (TGAP) epoxy resin cured with an aromatic amine, i.e., diamino‐diethyltoluene (DETDA), was investigated. The hyperbranched polymer was expected to enhance the reactivity of the trifunctional epoxy resin; a limited modification in the rheology of the trifunctional epoxy resin with the addition of the hyperbranched polymer, however, was not excluded. The reaction mechanism between DETDA amine and TGAP resin is very complex; therefore, a phenomenological kinetic model was employed. The autocatalytic model chosen was able to fit the experimental calorimetric data for the trifunctional epoxy resin as well as for its mixtures with the hyperbranched polymer. The effect of the OH‐terminated hyperbranched aliphatic polyester (H 30) on the reactivity of the trifunctional epoxy resin was marked, with a decrease of the temperatures at which the crosslinking reactions begin, even though a reduced rate of the curing reactions was observed. However, the completion of the reactions occurred faster and at lower temperatures. The cure mechanism, moreover, remained broadly autocatalytic in nature, regardless of H 30 concentration. Finally, the addition of hyperbranched polymer H 30, even at low percentages, led to a noticeable increase in the viscosity of the resin. This last aspect is believed to restrict to some extent the range of application of such epoxy systems containing the hyperbranched polymer in the traditional processing techniques. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci, 2008
Novel anion‐exchange organic‐inorganic hybrid membranes prepared through sol‐gel reaction and UV/thermal curing
Authors: Wu Cuiming , Wu Yonghui , Xu Tongwen , Fu Yanxun
Published: October 2007

Anion‐exchange organic‐inorganic hybrid membranes were prepared through sol‐gel reaction and UV/thermal curing of positively charged alkoxysilane and the alkoxysilane containing acrylate or epoxy groups. Properties of prepared hybrid membranes were varied by control of the molar ratio of the precursors. It was shown that the thermal degradation temperatures (Td) of the membranes were in the range of 212–226°C, water uptakes in the range of 9.6–14.6% and IEC values in the range of 0.9–1.6 mmol g−1. The hybrid membranes show high permeability to anions, as reflected by the high static transport number (t−) of the anion (Cl−). © 2007 Wiley Periodicals, Inc. J Appl Polym Sci 2008
Social and environmental reporting and the corporate ego
Authors: Spence Crawford
Published: October 2007

This paper reports on the results of a qualitative exploration into the target audiences for social and environmental reporting (SER). In spite of the wealth of literature on SER motivations, relatively few studies have sought to ascertain who the key target or actual audiences are for SER. The results of this study, based on interviews with UK SER managers, suggest that investors and employees are overwhelmingly the most important audiences targeted by SER managers. The paper draws on auto‐communication theory to question the extent to which SER serves as a means of engaging in dialogue with stakeholders. It is argued that, beyond sending risk management signals to the financial markets, SER primarily serves as a vehicle whereby organizations can communicate with themselves. Moreover, broader stakeholders might be targeted with SER only insofar as doing so serves as a perceived endorsement of organizational communications, thereby embellishing the corporate ego's fantasy of how it would like to be perceived. Copyright © 2007 John Wiley & Sons, Ltd and ERP Environment.
Effectiveness of a hypermedia tool in the innovative teaching of pneumatic engineering design drawing
Authors: Ramos Barbero B. , Pelaez Vara J. , García Maté E. , Ruiz Calvo J.
Published: October 2007

This article presents research undertaken to determine the quality, effectiveness, and efficiency of the “pneumatic engineering design drawing” hypermedia. Among our reasons for carrying out this research are the implementation of the European Credit Transfer System (ECTS), the inexistence on the market of a similar product, and an increasing daily need for asynchronous teaching methods. Its objectives sought to evaluate the application and its impact on the teaching–learning of pneumatics. Two sources of documentation were used as research strategies: opinion polls and experimentation. Three groups of equal size were formed at random, based on traditional teaching (T), self‐study using multimedia (M), and traditional teaching reinforced by the use of the hypermedia (A). The following rank among some of the more noteworthy conclusions. The hypermedia application has been positively rated. In the group with prior knowledge of the subject, the results of the post‐test are strongly related to those of the pre‐test in pneumatics. There is no empirical evidence to support the affirmation that students in group A achieved better results that those in group M or group T. In group M, academic performance is not directly dependent on the intellectual abilities of the student. The minimum time saving in group M was 42% in comparison with the other two groups. © 2007 Wiley Periodicals, Inc. Comput Appl Eng Educ 15: 289–307, 2007; Published online in Wiley InterScience (www.interscience.wiley.com); DOI 10.1002/cae.20158
Social networking technology: place and identity in mediated communities
Authors: Goodings Lewis , Locke Abigail , Brown Steven D.
Published: October 2007

This paper explores the rise of social networking technology as instances of mediated communities. A dialectic between collectivity and place, resulting in the grounding of a shared sense of the past in a particular place, is at the base of all communities. In this sense, community is, by its very definition, inherently ‘mediated’. We reformulate the notion of a ‘virtual community’ to examine the particular modalities of mediation across interactions occurring on Myspace. Data from two separate conversational exchanges are taken from open access Myspace profiles. Drawing on an approach broadly informed by the principles of Discursive Psychology (DP), we examine how identity is constituted within interaction by drawing on symbolic resources. The significance of place and of establishing a delicate relationship between the on‐line and off‐line accomplishments is underlined. The paper develops the arguments of Benwell & Stokoe (2006) and Dixon & Durrheim (2000) to arrive at an account of ‘place identity’ as the central dynamic in mediated community. Copyright © 2007 John Wiley & Sons, Ltd.
Renewal and resistance: moko in contemporary New Zealand
Authors: Nikora Linda Waimarie , Rua Mohi , Te Awekotuku Ngahuia
Published: October 2007

Moko is still here, contrary to the widely held belief that the art and custom of moko—Maori skin adornment—had vanished from New Zealand communities. Over the last two decades an increasingly visible number of Maori have revived and renewed the practice, taking colour into their skin. As an indigenous people, re‐taking moko confronts and refutes the myth of a ‘dying race’. It calls on Maori to recommit to strong Maori identities, customs and traditions and challenges the viewer to re‐examine their social representations of moko and moko wearers. This paper reports the resistance strategies of a group of 83 moko wearers. Strategies include (1) educating, representing and reconstructing; (2) invalidating and minimizing representations; (3) building and enhancing social networks; and (4) securing cultural identity and pride. They reflect the celebration of cultural resilience. Copyright © 2007 John Wiley & Sons, Ltd.
Heavy Metal, identity and the social negotiation of a community of practice
Authors: Snell Dave , Hodgetts Darrin
Published: October 2007

Psychologists have raised concerns about Heavy Metal music and possible links with substance misuse and youth suicide. This paper moves beyond this traditional disciplinary focus on negative messages to document the media‐related practices through which a Heavy Metal community is negotiated. Six participants contributed to ethnographic observations, interviews and photo‐voice projects. Results illustrate how socio‐material practices such as dressing a certain way, frequenting a bar and dancing are central to community maintenance and the reaffirmation of shared identities. Findings highlight the need for community psychology research to document the material and symbolic nature of contemporary communal life. Copyright © 2007 John Wiley & Sons, Ltd.
The Application of199Hg NMR and199mHg Perturbed Angular Correlation (PAC) Spectroscopy to Define the Biological Chemistry of HgII: A Case Study with Designed Two‐ and Three‐Stranded Coiled Coils
Authors: Iranzo Olga , Thulstrup Peter W. , Ryu Seung‐baek , Hemmingsen Lars , Pecoraro Vincent L.
Published: October 2007

The use of de novo designed peptides is a powerful strategy to elucidate HgII–protein interactions and to gain insight into the chemistry of HgIIin biological systems. Cysteine derivatives of the designed α‐helical peptides of the TRI family [Ac‐G‐(LaKbAcLdEeEfKg)4‐G‐NH2] bind HgIIat high pH values and at peptide/HgIIratios of 3:1 with an unusual trigonal thiolate coordination mode. The resulting HgIIcomplexes are good water‐soluble models for HgIIbinding to the protein MerR. We have carried out a parallel study using199Hg NMR and199mHg perturbed angular correlation (PAC) spectroscopy to characterize the distinct species that are generated under different pH conditions and peptide TRI L9C/HgIIratios. These studies prove for the first time the formation of [Hg{(TRI L9C)2‐(TRI L9CH)}], a dithiolate–HgIIcomplex in the hydrophobic interior of the three‐stranded coiled coil (TRI L9C)3.199Hg NMR and199mHg PAC data demonstrate that this dithiolate–HgIIcomplex is different from the dithiolate [Hg(TRI L9C)2], and that the presence of third α‐helix, containing a protonated cysteine, breaks the symmetry of the coordination environment present in the complex [Hg(TRI L9C)2]. As the pH is raised, the deprotonation of this third cysteine generates the trigonal thiolate–HgIIcomplex Hg(TRI L9C)3−on a timescale that is slower than the NMR timescale (0.01–10 ms). The formation of the species [Hg{(TRI L9C)2(TRI L9CH)}] is the result of a compromise between the high affinity of HgIIto form dithiolate complexes and the preference of the peptide to form a three‐stranded coiled coil.
Ternary Magnesium Rhodium Boride Mg2Rh1‐xB6+2x with a Modified Y2ReB6‐Type Crystal Structure.
Authors: Alekseeva A. M. , Abakumov A. M. , Chizhov P. S. , Leithe‐Jasper A. , Schnelle W. , Prots Yu. , Hadermann J. , Antipov E. V. , Grin Yu.
Published: October 2007

ChemInform 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.
Orderly Aligned and Highly Luminescent Monodisperse Rare‐Earth Orthophosphate Nanocrystals Synthesized by a Limited Anion‐Exchange Reaction.
Authors: Mai Hao‐Xin , Zhang Ya‐Wen , Sun Ling‐Dong , Yan Chun‐Hua
Published: October 2007

ChemInform 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.
Black Phosphorus and Its Composite for Lithium Rechargeable Batteries.
Authors: Park Cheol‐Min , Sohn Hun‐Joon
Published: October 2007

ChemInform 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.
SrSnO3 Nanostructures: Synthesis, Characterization, and Photocatalytic Properties.
Authors: Chen Di , Ye Jinhua
Published: October 2007

ChemInform 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.
Nd3N2SeBr: A New Nitride Selenide Bromide of Neodymium with 1∞{[N2Nd3]3+} Strands of Highly Condensed [NNd4]9+ Tetrahedra.
Authors: Lissner Falk , Schleid Thomas
Published: October 2007

ChemInform 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.
Controlled Assembly of Zero‐, One‐, Two‐, and Three‐Dimensional Metal Chalcogenide Structures.
Authors: Yuan Min , Dirmyer Matthew , Badding John , Sen Ayusman , Dahlberg Maria , Schiffer Peter
Published: October 2007

ChemInform 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.
Highly Efficient Synthesis of Stereodefined Multisubstituted 1,4‐Dicyano‐ and 1‐Cyano‐1,3‐butadienes and Their Reactions with Organolithium Reagents.
Authors: Wang Congyang , Wang Chao , Wang Qifeng , Wang Zhihui , Sun Hui , Guo Xiangyu , Xi Zhenfeng
Published: October 2007

ChemInform 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 New Strategy for the Synthesis of Optically Active Benzylic Fluorides and Corresponding Five‐Membered Heteroaromatic Analogues.
Authors: Gree Danielle , Gree Rene
Published: October 2007

ChemInform 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.
High‐Yielding Metalloenzymatic Dynamic Kinetic Resolution of Fluorinated Aryl Alcohols.
Authors: Bogar Krisztian , Baeckvall Jan‐E.
Published: October 2007

ChemInform 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.
Tuning the Reactivity of Dirhodium(II) Complexes with Axial N‐Heterocyclic Carbene Ligands: The Arylation of Aldehydes.
Authors: Gois Pedro M. P. , Trindade Alexandre F. , Veiros Luis F. , Andre Vania , Duarte M. Teresa , Afonso Carlos A. M. , Caddick Stephen , Cloke F. Geoffrey N.
Published: October 2007

ChemInform 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.
Ruthenium Hydride Catalyzed Regioselective Addition of Aldehydes to Enones to Give 1,3‐Diketones.
Authors: Fukuyama Takahide , Doi Takashi , Minamino Satoshi , Omura Sohei , Ryu Ilhyong
Published: October 2007

ChemInform 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.
Enantioselective Mannich‐Type Reaction of Sulfonylimines Having 2‐Pyridylsulfonyl Group as a Novel Stereocontroller.
Authors: Nakamura Shuichi , Sano Hideaki , Nakashima Hiroki , Kubo Koji , Shibata Norio , Toru Takeshi
Published: October 2007

ChemInform 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.
Silica Hybrid Material Containing Pd—NHC Complex as Heterogeneous Catalyst for Mizoroki—Heck Reactions.
Authors: Polshettiwar Vivek , Hesemann Peter , Moreau Joel J. E.
Published: October 2007

ChemInform 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 Benzofulvenes by Palladium‐Catalyzed Cyclization of 1,2‐Dialkynylbenzenes.
Authors: Lee Chia‐Ying , Wu Ming‐Jung
Published: October 2007

ChemInform 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.
Asymmetric Organocatalytic α‐Arylation of Aldehydes.
Authors: Aleman Jose , Cabrera Silvia , Maerten Eddy , Overgaard Jacob , Joergensen Karl Anker
Published: October 2007

ChemInform 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.
Meso—Meso‐Linked Corroles
Authors: Koszarna Beata , Gryko Daniel T.
Published: October 2007

ChemInform 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.
Sc(OTf)3‐Catalyzed Alkylation of Indoles with Propargyl Alcohols: An Expeditious Synthesis of 3‐Substituted Indoles.
Authors: Yadav J. S. , Reddy B. V. Subba , Rao K. V. Raghavendra , Kumar G. G. K. S. Narayana
Published: October 2007

ChemInform 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.
Syntheses, Electrochemical Studies and Crystal Structures of New Unsymmetrical Tetrathiafulvalene Carboxylate Derivatives.
Authors: Liu Wei , Guo Yun‐Jun , Zeng Xi‐Rui , Zuo Jing‐Lin , You Xiao‐Zeng
Published: October 2007

ChemInform 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.
Organocatalysis in Conjugate Amine Additions. Synthesis of β‐Amino Acid Derivatives.
Authors: Sibi Mukund P. , Itoh Kennosuke
Published: October 2007

ChemInform 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.
Environmentally Benign Synthesis of Fluorinated Pyrazolone Derivatives and Their Antimicrobial Activity.
Authors: Shelke S. N. , Dalvi N. R. , Kale S. B. , More M. S. , Gill C. H. , Karale B. K.
Published: October 2007

ChemInform 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.
Efficient One‐Pot Microwave‐Assisted Synthesis of 3‐(Thien‐3‐yl)imidazolidine‐2,4‐dione Analogues.
Authors: Brouillette Yann , Lisowski Vincent , Guillon Jean , Massip Stephane , Martinez Jean
Published: October 2007

ChemInform 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.
Reaction of 3‐Nitro‐ and 3‐Bromo‐3‐nitroacrylates with Sodium Azide.
Authors: Anisimova N. A. , Berestovitskaya V. M. , Berkova G. A. , Makarova N. G.
Published: October 2007

ChemInform 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.
Preparation of 2‐Aryl‐2H‐benzotriazoles by Zinc‐Mediated Reductive Cyclization of o‐Nitrophenylazophenols in Aqueous Media Without the Use of Organic Solvents.
Authors: Liu Guo‐Bin , Zhao Hong‐Yun , Yang Hong‐Jie , Gao Xiang , Li Miao‐Kui , Thiemann Thies
Published: October 2007

ChemInform 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.
4‐Hydroxy‐2‐quinolones. Part 111. Simple Synthesis of 1‐Substituted 4‐Methyl‐2‐oxo‐1,2‐dihydroquinoline‐3‐carboxylic Acids.
Authors: Ukrainets I. V. , Gorokhova O. V. , Sidorenko L. V. , Bereznyakova N. L.
Published: October 2007

ChemInform 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.
Stereoselective Synthesis of New Spiro‐Fused Heterocyclic Systems, 2,3,4,4a,5,6‐Hexahydro‐6H‐spiro[benzo [c]quinolizine‐5,4′‐pyrazol]‐5′‐ones.
Authors: Glukhareva T. V. , Kropotina P. E. , Kosterina M. F. , Nein Yu. I. , Deeva E. V. , Morzherin Yu. Yu.
Published: October 2007

ChemInform 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.
β‐Oxoacids Esters in the Synthesis of Benzo[f]quinoline Derivatives.
Authors: Gusak K. N. , Kozlov N. G.
Published: October 2007

ChemInform 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.
TaBr5‐Catalyzed Biginelli Reaction: One‐Pot Synthesis of 3,4‐Dihydropyrimidin‐2‐(1H)‐ones/thiones under Solvent‐Free Conditions.
Authors: Ahmed Naseem , van Lier Johan E.
Published: October 2007

ChemInform 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 Selective Synthesis for Novel Pyranodipyrimidines.
Authors: Kidwai Mazaahir , Goyal Ritu , Singhal Kavita
Published: October 2007

ChemInform 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 Some 4‐Substituted Hydrazinotetrazolo[1,5‐a]quinoxalines
Authors: Deshmukh M. B. , Mali A. R. , Jadhav S. D. , Suryawanshi A. W.
Published: October 2007

ChemInform 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 Novel Aliphatic Thiourea Derivatives Containing s‐Triazine Moiety as Potential Antimicrobial Agents.
Authors: Desai Akshay D. , Mahajan Dharmesh H. , Chikhalia Kishor H.
Published: October 2007

ChemInform 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.
Microwave‐Assisted Transition‐Metal‐Catalyzed Synthesis of N‐Shifted and Ring‐Expanded Buflavine Analogues.
Authors: Appukkuttan Prasad , Dehaen Wim , Van der Eycken Erik
Published: October 2007

ChemInform 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 Facile Synthesis and Highly Atom Economic 1,3‐Dipolar Cycloaddition of Hexahydropyrido[3,4‐c][1,5]benzothiazepines with Nitrile Oxide: Stereoselective Formation of Hexahydro[1,2,4]oxadiazolo[5,4‐d]pyrido[3,4‐c][1,5]benzothiazepines.
Authors: Kumar Raju Ranjith , Perumal Subbu
Published: October 2007

ChemInform 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.
Regiochemical Aspects of the Platinum Oxide Catalyzed Hydrosilylation of Alkynes.
Authors: Hamze Abdallah , Provot Olivier , Brion Jean‐Daniel , Alami Mouad
Published: October 2007

ChemInform 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.
First 1,1‐Organoboration Reactions of Vinyltin Compounds — A Route to Boryl‐Substituted Stannolanes and Organo‐Substituted Stannol‐3‐enes
Authors: Wrackmeyer Bernd , Tok Oleg L.
Published: October 2007

ChemInform 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.
Two Novel Nortriterpenoids from Gomphostemma parviflorum
Authors: Wang Qiong , Luo Shi‐De , Ju Peng , Wang Yi‐Fen
Published: October 2007

ChemInform 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.
Anhydrocochlioquinone A, a New Antitumor Compound from Bipolaris oryzae.
Authors: Phuwapraisirisan Preecha , Sawang Knokwan , Siripong Pongpun , Tip‐pyang Santi
Published: October 2007

ChemInform 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.
2‐Arylimino‐5,6‐dihydro‐4H‐1,3‐thiazines as a New Class of Cannabinoid Receptor Agonists. Part 1. Discovery of CB2 Receptor Selective Compounds.
Authors: Kai Hiroyuki , et al. et al.
Published: October 2007

ChemInform 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.
Structural Mineralogy of the Eudialyte Group: A Review
Authors: Rastsvetaeva R. K.
Published: October 2007

ChemInform 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.
Halogens and Noble Gases
Authors: Brisdon Alan K.
Published: October 2007

ChemInform 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.
Nitrogen, Phosphorus, Arsenic, Antimony and Bismuth
Authors: Lynam Jason M.
Published: October 2007

ChemInform 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.
Domino Syntheses of Bioactive Tetronic and Tetramic Acids
Authors: Schobert Rainer
Published: October 2007

ChemInform 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.
Rhodium‐Catalyzed Stereoselective Alder—Ene Reactions and First Sequential Transformations
Authors: Koerber Nadine , Mueller Thomas J. J.
Published: October 2007

ChemInform 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.
The Synthetic Versatility of Oxazolidinethiones
Authors: Ortiz Aurelio , Sansinenea Estibaliz
Published: October 2007

ChemInform 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.
Syntheses and Biological Activities of Glycoconjugates
Authors: Hada Noriyasu
Published: October 2007

ChemInform 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 Formulations of a Liver Protection Drug Glycyrrhizin
Authors: Koga Kenjiro , Kawashima Susumu , Shibata Nobuhito , Takada Kanji
Published: October 2007

ChemInform 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.
π‐Organogels of Self‐Assembled p‐Phenylenevinylenes: Soft Materials with Distinct Size, Shape, and Functions
Authors: Ajayaghosh Ayyappanpillai , Praveen Vakayil K.
Published: October 2007

ChemInform 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.
Interweaving Anion Templation
Authors: Lankshear Michael D. , Beer Paul D.
Published: October 2007

ChemInform 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.
Crystalline Host—Guest Assemblies of Steroidal and Related Molecules: Diversity, Hierarchy, and Supramolecular Chirality
Authors: Miyata Mikiji , Tohnai Norimitsu , Hisaki Ichiro
Published: October 2007

ChemInform 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.
Characteristic Pattern of Inflammatory Response and Its Association with Reduced Survival in Patients with Common Solid Cancers
Authors: Elahi Maqsood M.
Published: October 2007

ChemInform 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.
Solvent‐Mediated Proton Transfer in Catalysis by Carbonic Anhydrase
Authors: Silverman David N. , McKenna Robert
Published: October 2007

ChemInform 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.
Annotation of Bacterial and Archaeal Genomes: Improving Accuracy and Consistency
Authors: Overbeek Ross , Bartels Daniela , Vonstein Veronika , Meyer Folker
Published: October 2007

ChemInform 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.
Comparative Genomic Reconstruction of Transcriptional Regulatory Networks in Bacteria
Authors: Rodionov Dmitry A.
Published: October 2007

ChemInform 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.
Alternatives for Lignocellulosic Pulp Delignification Using Polyoxometalates and Oxygen: A Review
Authors: Gaspar Armindo R. , Gamelas Jose A. F. , Evtuguin Dmitry V. , Neto Carlos Pascoal
Published: October 2007

ChemInform 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.
Circular dichroism study of DNA binding by a potential anticancer peptide nucleic acid targeted against the MYCN oncogene
Authors: Faccini Andrea , Tortori Andrea , Tedeschi Tullia , Sforza Stefano , Tonelli Roberto , Pession Andrea , Corradini Roberto , Marchelli Rosangela
Published: October 2007

The interaction with DNA of a peptide nucleic acid (PNA) oligomer (16nt) conjugated with a nuclear localization signal (NLS) peptide, which was previously found to be able to inhibit tumor cell proliferation through block of transcription of the MYCN oncogene, was studied by UV and CD spectroscopy. While data obtained by UV were not conclusive, the use of circular dichroism gave clear‐cut evidence of the formation of a PNA:DNA duplex of exceptionally high stability (Tm ≥ 90°C). Using the same approach, the effect of mutations on DNA:PNA stability was evaluated, and was found in accordance with that expected for a Watson–Crick interaction. The role of the NLS peptide was evaluated by using a PNA lacking of this part, which gave rise to less stable PNA:DNA duplexes. Finally, a competition experiment carried out with a 26mer dsDNA, containing the target 16mer sequence in its middle region, in the presence of PNA‐NLS gave evidence for the formation of a ternary complex at 25°, while at higher temperature, the PNA:DNA duplex and the displaced homologous DNA strand were detected. The present results support the possibility of an analogous mechanism of action of this antitumor PNA in vivo. Chirality, 2008. © 2007 Wiley‐Liss, Inc.
Clinicopathologic characteristics and prognostic factors in 420 metastatic breast cancer patients with central nervous system metastasis
Authors: Altundag Kadri , Bondy Melissa L. , Mirza Nadeem Q. , Kau Shu‐Wan , Broglio Kristine , Hortobagyi Gabriel N. , Rivera Edgardo
Published: October 2007

BACKGROUND.

Breast cancer is the second most common cause of central nervous system (CNS) metastases. Several risk factors for CNS metastases have been reported. The objective of the current study was to describe clinicopathologic characteristics and prognostic factors in breast cancer patients with CNS metastases.

METHODS.

The authors retrospectively evaluated clinical data from 420 patients who had been diagnosed with breast cancer and CNS metastasis between 1994 and 2004 at the University of Texas M. D. Anderson Cancer Center.

RESULTS.

The median age of the patients at the time of diagnosis of breast cancer was 45 years (range, 25–77 years). Premenopausal and postmenopausal patients were distributed equally. Most patients had invasive ductal histology (91.2%), grade 3 tumors (81.4%) (using the modified Black nuclear grading system), T2 tumor classification (40.1%), and N1 lymph node status (59.7%) diagnosis. Forty percent of patients had estrogen receptor (ER)‐positive disease, and 34% had progesterone receptor‐positive disease. HER‐2/neu status was recorded for only 248 patients, and 39% of the patients in that group had HER‐2/neu‐positive disease. The most common sites of first metastasis were liver, bone, and lung. CNS metastasis was the site of first recurrence in 53 patients (12%). In total, 329 patients had received either neoadjuvant treatment (113 patients) or adjuvant chemotherapy (216 patients). The majority of those patients (74.4%) had received anthracycline‐based regimens. Metastasis was solitary in 111 patients (26.4%), and 29 patients had only leptomeningeal metastases. The median time from breast cancer diagnosis to CNS metastasis was 30.9 months (range, from −5 months to 216.7 months). The median follow‐up after a diagnosis of CNS metastasis was 6 months (range, 7–95.9 months). In all, 359 patients died, and the overall median survival was 6.8 months. Only age at diagnosis and ER status were associated significantly with overall survival in the multivariate analysis.

CONCLUSIONS.

The current results indicated that the prognosis remains patients with breast cancer metastatic to the CNS. More effective treatment approaches are needed for patients with CNS metastases, even for those with favorable prognostic factors, such as ER‐positive tumors or younger age. Cancer 2007. © 2007 American Cancer Society.
Survival improvements for advanced stage nonbronchioloalveolar carcinoma‐type nonsmall cell lung cancer cases with ipsilateral intrapulmonary nodules
Authors: Zell Jason A. , Ou S.‐H. Ignatius , Ziogas Argyrios , Anton‐Culver Hoda
Published: October 2007

BACKGROUND.

Survival improvements have been demonstrated for patients with bronchioloalveolar (BAC) nonsmall cell lung cancer (NSCLC) with intrapulmonary satellite T4 nodules compared with other patients with stage IIIB disease, and for ipsilateral intrapulmonary M1 tumors versus contralateral or distant metastasis. However, it is not known whether these differences are observed in patients with non‐BAC NSCLC.

METHODS.

A case‐only analysis of the U.S. Surveillance, Epidemiology, and End Results (SEER) data (1999–2003) was conducted. Overall survival (OS) and lung cancer‐specific survival (LCSS) univariate analyses were conducted using the Kaplan‐Meier method. Multivariate survival analyses were performed using Cox proportional hazards ratios.

RESULTS.

A total of 27,435 incident cases of histologically confirmed, advanced stage NSCLC were identified. Cases with stage IIIB NSCLC due to multiple lesions in the same lobe (n = 633) had a significantly improved median OS (21 months) and LCSS (31 months) compared with other cases with stage IIIB NSCLC (n = 7695), with an OS of 7 months and an LCSS of 9 months (P < .0001 for both comparisons). Among cases with stage IV NSCLC, those with intrapulmonary nodules (n = 3010) had a significantly improved median OS (9 months) and LCSS (10 months) compared with those with distant metastasis (n = 16,097), with an OS of 4 months and an LCSS of 5 months (P < .0001 for both comparisons). These survival differences persisted after adjustment for age, sex, ethnicity, surgery, and radiotherapy. Among cases with stage IV NSCLC, those with ipsilateral intrapulmonary nodules (n = 1120) had improved OS (12 months) compared with those with bilateral intrapulmonary nodules (n = 1890), with an OS of 7 months (P < .0001).

CONCLUSIONS.

Cases with stage IIIB and IV NSCLC with ipsilateral intrapulmonary nodules were found to have improved survival outcomes compared with other cases with stage IIIB and IV disease. The results of the current study add additional support for modifications to the current NSCLC staging system. Cancer 2008. © 2007 American Cancer Society.
CMV‐specific central memory T cells reside in bone marrow
Authors: Letsch Anne , Knoedler Maren , Na Il‐Kang , Kern Florian , Asemissen Anne‐Marie , Keilholz Ulrich , Loesch Michael , Thiel Eckhard , Volk Hans‐Dieter , Scheibenbogen Carmen
Published: October 2007

CMV‐specific CD8+ T cell responses in peripheral blood (PB) are characterized by a preponderance of effector and effector memory T cells. CMV‐specific central memory T cells (TCM), which are considered crucial in maintaining long‐term immunity, are rarely detectable in PB. In this study we have analyzed differentiation and function of CMV pp65‐specific CD8+ T cells in paired samples of human PB and BM using intracellular cytokine and tetramer staining. Overall frequencies of CMV pp65‐specific T cells were similar in PB compared to BM; however, CMV‐specific CD45RA–CCR7+ TCM were almost exclusively detectable in BM, which was not related to a general accumulation of TCM in BM. In vitro, CMV‐specific T cells could be more efficiently expanded from BM (median 128‐fold, n=6) than from PB (median 72‐fold, p=0.01). Taken together, these data show that the BM is a compartment harboring CMV‐specific TCM and underline the concept of the BM as a secondary immune organ. CMV specific BM‐derived TCM might be a valuable source for generating T cells for adoptive transfer.
New Polymorphs of Magnesium‐Based Metal–Organic Frameworks Mg3(ndc)3 (ndc = 2,6‐Naphthalenedicarboxylate)
Authors: Senkovska Irena , Fritsch Julia , Kaskel Stefan
Published: October 2007

Two new magnesium 2,6‐naphthalenedicarboxylate (ndc) metal–organic frameworks, [Mg3(ndc)3(dif)4] (1) (dif = N,N‐diisopropylformamide) and [Mg3(ndc)3(dmf)2(CH3OH)(H2O)](dmf) (2 = TUDMOF‐3) (dmf = N,N‐dimethylformamide), have been synthesised under solvothermal conditions from Mg(NO3)2·6H2O and pure 2,6‐naphthalenedicarboxylic acid. According to single‐crystal X‐ray crystallographic studies, complex 1 crystallises in the space group P21/n [a = 14.769(3) Å, b = 13.325(3) Å, c = 17.998(4) Å, β = 108.67(2)°] and complex 2 in the space group P$\bar {1}$ [a = 11.1116(11) Å, b = 12.6229(13) Å, c = 17.800(2) Å, α = 88.568(14)°, β = 83.833(13)°, γ = 70.167(11)°]. The structures of compounds 1 and 2 consist of trinuclear magnesium clusters connected to six dicarboxylate ligands; for 2, the clusters act as distorted octahedral nodes to give a 3D network. In contrast, the trinuclear clusters in 1 act as pseudo‐planar‐hexagonal nodes to give a 2D network assembly. According to nitrogen and hydrogen physisorption measurements at 77 K for compounds 1 and 2, TUDMOF‐3 has a permanent porosity with a Langmuir surface area of 632 m2 g–1, a specific pore volume of 0.21 cm3 g–1 and a hydrogen storage capacity of 1.23 wt.‐% at 77 K and 1 bar, whereas compound 1 is not porous.(© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2007)
Flexible CuI–Thiolate Clusters with Relevance to Metallothioneins
Authors: Maiti Biplab K. , Pal Kuntal , Sarkar Sabyasachi
Published: October 2007

Simple Cu–thiolate chemistry was developed to demonstrate the presence of copper clusters with {Cu4S6}, {Cu5S7} and {Cu6S4} cores in relevance to copper‐containing metallothioneins. The new hexanuclear tricoordinate triply bridging thiolatocopper(I) clusters [NEt4]4[Cu6(SPh)4Cl6] (1) and[NEt4]4[Cu6(SPh)4Br6] (2) were synthesized from the soup of polymeric [CuISPh]n and quaternary ammonium halide. These complexes readily converted into [Et4N]2[Cu5(SPh)7] (3) and [Et4N]2[Cu4(SPh)6] (4) in the presence of excess amounts of thiol. All are structurally characterized by single‐crystal X‐ray crystallography and these smaller clusters may be inscribed into the structurally characterized larger cluster {Cu8S10} obtained from synthetic copper yeast metallothioneins. Like Cu–MT proteins, all these clusters show photoluminescence around 560 nm on excitation at 350 nm, and these emission spectra are completely quenched by molecular oxygen. Variable copper stoichiometry and the interconversion of only monodentate thiolate ligands in these clusters convey the importance of flexibility, which is relevant to metallothioneins. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2007)
Transition‐Metal‐Free Boron–Carbon Bond Activation: Insertion of an NNP Fragment into a Boron–Carbon Bond
Authors: Kowalewski Markus , Krumm Burkhard , Mayer Peter , Schulz Axel , Villinger Alexander
Published: October 2007

The influence and reactivity of fluorine‐containing Lewis acids such as neat BF3, BF3·OEt2, and B(C6F5)3 on Me3SiCl elimination in (Me3Si)2N–N(SiMe3)–PCl2 was investigated. The reaction with B(C6F5)3 resulted in the formation of a novel diazadiphosphetidine with a phosphorus(III) atom attached to a pentafluorophenyl group, which can be regarded as a formal NNP fragment insertion into a B–C bond.(© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2007)
A Straightforward Synthesis of Isoxazoline‐Based Carbocyclic Nucleosides from 1,3‐Cyclohexadiene through Nitrosocarbonyl Chemistry
Authors: Quadrelli Paolo , Mella Mariella , Carosso Serena , Bovio Bruna , Caramella Pierluigi
Published: October 2007

3‐Benzoyl‐2‐oxa‐3‐azabicyclo[2.2.2]oct‐5‐ene undergoes cycloaddition with benzonitrile oxide to afford a mixture of syn and anti regioisomeric cycloadducts. The anti cycloadducts were easily elaborated to stereodefined isoxazoline‐based carbocyclic aminols that serve as synthons for the linear construction of purine nucleosides. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2007)
Depressive tendencies and lower levels of self‐sacrifice in mothers, and selflessness in their anorexic daughters
Authors: Bachar Eytan , Kanyas Kyra , Latzer Yael , Canetti Laura , Bonne Omer , Lerer Bernard
Published: October 2007

(1) To compare levels of selflessness (the tendency to ignore one's own needs and serve others') and asceticism of parents and daughters, in anorexic and control families. (2) To investigate the relationship between parents' depression and daughters' selflessness. Twenty‐eight anorexic daughters and their 28 mothers and 23 fathers were compared to 29 control daughters and their 29 mothers and 28 fathers, participants were administered the Beck Depression Inventory, the Selflessness Scale, the asceticism scale of the Eating Disorder Inventory and the Structured Clinical Interview for DSM‐IV. Anorexics' mothers showed significantly lower levels of selflessness and asceticism compared to control mothers; anorexic daughters showed significantly higher levels of selflessness and asceticism compared to control daughters. Depressive tendencies in anorexics' mothers were associated positively and significantly with their daughters' selflessness. The results support the clinical literature that depicts the anorexic daughters' readiness to sacrifice themselves for the family's needs. Clinical implications are drawn. Copyright © 2007 John Wiley & Sons, Ltd and Eating Disorders Association.