bluuebunny/crossref_metadata_2025 huggingface dataset:
A Simple Organocatalytic Enantioselective Cyclopropanation of α,β‐Unsaturated Aldehydes.
Authors: Rios Ramon , Sunden Henrik , Vesely Jan , Zhao Gui‐Ling , Dziedzic Pawel , Cordova Armando
Published: August 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 Cyclopropanes via Pd(II)/(IV)‐Catalyzed Reactions of Enynes.
Authors: Welbes Leilani L. , Lyons Thomas W. , Cychosz Katie A. , Sanford Melanie S.
Published: August 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.
Copper‐Mediated Synthesis of Tertiary Diaryl Squaramides.
Authors: Ramalingam Vijayakumar , Bhagirath Niala , Muthyala Rajeev S.
Published: August 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 Palladium‐Catalyzed Allylation of Aryl Halides with Homoallyl Alcohols via Retro‐Allylation.
Authors: Iwasaki Masayuki , Hayashi Sayuri , Hirano Koji , Yorimitsu Hideki , Oshima Koichiro
Published: August 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.
Design of C2‐Symmetric Tetrahydropentalenes as New Chiral Diene Ligands for Highly Enantioselective Rh‐Catalyzed Arylation of N‐Tosylarylimines with Arylboronic Acids.
Authors: Wang Zhi‐Qian , Feng Chen‐Guo , Xu Ming‐Hua , Lin Guo‐Qiang
Published: August 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.
Allylation Reactions of Aromatic Aldehydes and Ketones with Lithium in THF under Ultrasonic Irradiation.
Authors: Bian Yan‐Jiang , Zhang Jian‐You , Li Ji‐Tai
Published: August 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 Diaryl Ethers Based on One‐Pot [3 + 3] Cyclizations of 1,3‐Bis(silyl enol ethers).
Authors: Sher Muhammad , Ahmed Zafar , Rashid Muhammad A. , Fischer Christine , Spannenberg Anke , Langer Peter
Published: August 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.
Cyclopalladated Ferrocenylimine: A Highly Effective Catalyst for the Borylation/Suzuki Coupling Reaction.
Authors: Ma Ning , Zhu Zhiwu , Wu Yangjie
Published: August 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.
An Efficient Yb(OTf)3‐Catalyzed Alkylation of 1,3‐Dicarbonyl Compounds Using Alcohols as Substrates.
Authors: Huang Wen , Wang Jialiang , Shen Quansheng , Zhou Xigeng
Published: August 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.
n Improved and Clean Procedure for the Synthesis of One‐Donor Poly‐Acceptors Systems Containing 2,6‐Dicyanoamine Moiety in Aqueous Media Catalyzed by TEBAC in the Presence and Absence of K2CO3.
Authors: Wang Xiang‐Shan , Zhang Mei‐Mei , Li Qing , Yao Chang‐Sheng , Tu Shu‐Jiang
Published: August 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 InCl3‐Catalyzed Reduction of Anthrones and Anthraquinones by Using Aluminum Powder in Aqueous Media.
Authors: Wang Chunyan , Wan Jieping , Zheng Zhiguo , Pan Yuanjiang
Published: August 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.
Amine‐Catalyzed Asymmetric Epoxidation of α,β‐Unsaturated Aldehydes.
Authors: Zhao Gui‐Ling , Ibrahem Ismail , Sunden Henrik , Cordova Armando
Published: August 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 Stereoselective Aziridination of Imines with (S)‐Dimethylsulfonium‐(p‐tolylsulfinyl)methylide.
Authors: Midura Wanda H.
Published: August 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.
Catalytic Asymmetric Formation of β‐Sultams.
Authors: Zajac Marian , Peters Rene
Published: August 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.
Tellurium/Lithium Exchange Reactions in the Synthesis of Spiroketals and 1,6‐Dioxygenated Systems.
Authors: Dos Santos Alcindo A. , Princival Jefferson L. , Comasseto Joao V. , de Barros Simone M. G. , Brainer Neto Jose E.
Published: August 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 Cyclization of o‐Iodobenzoates with Aldehydes Catalyzed by Cobalt Bidentate Phosphine Complexes: A Novel Entry to Chiral Phthalides.
Authors: Chang Hong‐Tai , Jeganmohan Masilamani , Cheng Chien‐Hong
Published: August 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 First Entry to 5,6‐Dihydroxy‐3‐mercaptoindole, 5‐Hydroxy‐3‐mercaptoindole and Their 2‐Carbomethoxy Derivatives by a Mild Thiocyanation/Reduction Methodology.
Authors: Pezzella Alessandro , Palma Aniello , Iadonisi Alfonso , Napolitano Alessandra , d'Ischia Marco
Published: August 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.
Gold(I)‐Catalyzed Intramolecular Enantioselective Hydroarylation of Allenes with Indoles.
Authors: Liu Cong , Widenhoefer Ross A.
Published: August 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.
Pyrrolidine and Piperidine Formation via Copper(II) Carboxylate Promoted Intramolecular Carboamination of Unactivated Olefins: Diastereoselectivity and Mechanism.
Authors: Sherman Eric S. , Fuller Peter H. , Kasi Dhanalakshmi , Chemler Sherry R.
Published: August 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.
Silver‐Catalyzed Incorporation of Carbon Dioxide into Propargylic Alcohols.
Authors: Yamada Wataru , Sugawara Yudai , Cheng Hau Man , Ikeno Taketo , Yamada Tohru
Published: August 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.
New Simple Synthesis of N‐Acylpyrazolidines and N‐Arylsulfonyl‐2‐pyrazolines
Authors: Shevtsov Alexander V. , Kislukhin Alexander A. , Kuznetsov Vladimir V. , Petukhova Vera Yu. , Maslennikov Vladimir A. , Borissova Alexandra O. , Lyssenko Konstantin A. , Makhova Nina N.
Published: August 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 and Bioactivity of Some New [3‐[4‐Methylphenoxymethyl]‐4‐phenyl‐[1,2,4]triazole‐5‐thio]acetanilide Derivatives.
Authors: Wei Tai‐Bao , Tang Jing , Liu Hong , Zhang You‐Ming
Published: August 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.
Rh(I)‐Catalyzed Alkylation of Quinolines and Pyridines via C—H Bond Activation.
Authors: Lewis Jared C. , Bergman Robert G. , Ellman Jonathan A.
Published: August 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 Tetrahydropyrido[2,3‐b]pyrazine Scaffolds from 2,3,5,6‐Tetrafluoropyridine Derivatives.
Authors: Hargreaves Christopher A. , Sandford Graham , Slater Rachel , Yufit Dmitrii S. , Howard Judith A. K. , Vong Antonio
Published: August 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.
Bakers′ Yeast Catalyzed Synthesis of Polyhydroquinoline Derivatives via an Unsymmetrical Hantzsch Reaction.
Authors: Kumar Atul , Maurya Ram Awatar
Published: August 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 5‐Alkoxyindolizines from Oxazolo[3,2‐a]pyridinium Salts.
Authors: Babaev Eugene V. , Efimov Andrey V. , Tsisevich Alexander A. , Nevskaya Aleksandra A. , Rybakov Victor B.
Published: August 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 13H‐Indole[3,2‐c]acridines and Their Methyl Derivatives.
Authors: Sridharan Makuteswaran , Prasad Karnam Jayarampillai Rajendra
Published: August 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 Synthesis of Some Novel Thiadiazolothienopyrimidines.
Authors: Prasad M. Raghu , Raziya S. , Kishore D. Pran
Published: August 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 and Structural Characterization of 1,4‐Di(2‐methoxyphenyl)‐2,5‐piperazinedione.
Authors: Zhang Shu‐Sheng , Wen Yong‐Hong , Tang Xiao‐Fang , Li Xue‐Mei
Published: August 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.
An Efficient Route for the Synthesis of 2‐Arylthiazino[5,6‐b]indole Derivatives.
Authors: Csomos Peter , Fodor Lajos , Mandity Istvan , Bernath Gabor
Published: August 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 Bis(indolyl)maleimide Pyridinophanes that Are Potent, Selective Inhibitors of Glycogen Synthase Kinase‐3.
Authors: Zhang Han‐Cheng , Bonaga Llorente V. R. , Ye Hong , Derian Claudia K. , Damiano Bruce P. , Maryanoff Bruce E.
Published: August 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.
Applications of the Palladium‐Catalyzed Carbonylative Annulation of Internal Alkynes to the Synthesis of Medium‐Sized Rings.
Authors: Kadnikov Dmitry V. , Larock Richard C.
Published: August 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.
Carbocyclization Reaction of Malonate Derivatives with Allylsilane Moiety Mediated by AlCl3‐n‐Bu3N.
Authors: Imazeki Shigeaki , Kinoshita Ryohiko , Akiyama Takahiko
Published: August 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.
Quinine‐Catalyzed Enantioselective Michael Addition of Diphenyl Phosphite to Nitroolefins (I): Synthesis of Chiral Precursors (III) of α‐Substituted β‐Aminophosphonates.
Authors: Wang Jian , Heikkinen Lora D. , Li Hao , Zu Liansuo , Jiang Wei , Xie Hexin , Wang Wei
Published: August 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 New Rare‐Class Tetracyclic Diterpenoids from Otostegia limbata
Authors: Farooq Umar , Khan Afsar , Ahmad Viqar Uddin , Khan Saleha Suleman , Kousar Farzana , Arshad Saima
Published: August 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.
Determination of the Absolute Configurations of Natural Products via Density Functional Theory Calculations of Vibrational Circular Dichroism, Electronic Circular Dichroism, and Optical Rotation: The Iridoids Plumericin and Isoplumericin.
Authors: Stephens P. J. , Pan J. J. , Devlin F. J. , Krohn K. , Kurtan T.
Published: August 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.
Xylodiol, a New Atisane Diterpenoid from Xylopia Langsdorffiana St.‐Hil. & Tul. (Annonaceae)
Authors: Tavares Josean Fechine , Silva Marianna Vieira B. , Queiroga Karine F. , Diniz Margareth F. F. Melo , Barbosa‐Filho Jose M. , Haun Marcela , Melo Patricia S. , da Silva Marcelo Sobral
Published: August 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.
Total Synthesis of (‐)‐Elegansidiol (IV) by Using an Abnormal Beckmann Fragmentation of Hajos Ketone Oxime as a Key Step.
Authors: Cao Liya , Sun Jianwei , Wang Xinyan , Zhu Rui , Shi Haijian , Hu Yuefei
Published: August 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 New C‐21 Steroidal Glycosides from the Stems of Stephanotis mucronata.
Authors: Li Xiao‐Yu , Chen Feng‐Yang , Ye Yi‐Ping , Pan Yuan‐Jiang
Published: August 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.
Peptaibol Production by Sepedonium Strains Parasitizing Boletales.
Authors: Neuhof Torsten , Berg Albrecht , Besl Helmut , Schwecke Torsten , Dieckmann Ralf , von Doehren Hans
Published: August 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 “Azirine/Oxazolone Method” in Peptaibol Synthesis: Preparation of a Derivative of Trichotoxin A‐50 (G).
Authors: Altherr Werner , Linden Anthony , Heimgartner Heinz
Published: August 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, and Structural and Biological Studies of Efrapeptin C Analogues.
Authors: Jost Micha , Weigelt Sven , Huber Thomas , Majer Zsuzsanna , Greie Joerg‐Christian , Altendorf Karlheinz , Sewald Norbert
Published: August 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.
Cobaltpolyoxometalate‐Catalyzed Cyclization of Glucal with Aryl Amines: Synthesis of 2,4‐Disubstituted Tetrahydroquinolines.
Authors: Rafiee Ezzat , Azad A.
Published: August 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 New Protease‐Inhibiting Glycosphingolipids from Buddleja crispa.
Authors: Ahmad Ijaz , Anis Itrat , Fatima Itrat , Malik Abdul , Khan Shafiullah , Afza Nighat , Tareen Rasool Bakhsh , Lodhi Muhammad Arif , Choudhary M. Iqbal
Published: August 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.
Antiplasmodial Activity of Some Constituents of the Root Bark of Harungana madagascariensis Lam. (Hypericaceae).
Authors: Lenta Bruno Ndjakou , Ngouela Silvere , Boyom Fabrice Fekam , Tantangmo Ferdinand , Tchouya Guy Raymond Feuya , Tsamo Etienne , Gut Jiri , Rosenthal Philip Jon , Connolly Joseph Donald
Published: August 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.
Synthetic Studies on Macrolactin A (I): Construction of C4‐C24 Fragment.
Authors: Georgy Marie , Lesot Philippe , Campagne Jean‐Marc
Published: August 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 Dimethyl Gloiosiphone A (III) by Way of Palladium‐Catalyzed Domino Cyclization.
Authors: Doi Takayuki , Iijima Yusuke , Takasaki Masaru , Takahashi Takashi
Published: August 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.
Magnetic Phase Diagrams of Ln3(Co:Ni)13B2, Ln: Y and Nd Intermetallic Compounds
Authors: Bartolome J. , Plugaru N. , Campo J. , Rubin J. , Hlil E. K. , Rillo C. , Arauzo A.
Published: August 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.
Agostic Interactions in Transition Metal Compounds
Authors: Brookhart Maurice , Green Malcolm L. H. , Parkin Gerard
Published: August 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.
Catalysis in Ionic Liquids
Authors: Parvulescu Vasile I. , Hardacre Christopher
Published: August 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.
Gas‐Expanded Liquids
Authors: Jessop Philip G. , Subramaniam Bala
Published: August 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.
Photocatalysis for the Formation of the C—C Bond
Authors: Fagnoni Maurizio , Dondi Daniele , Ravelli Davide , Albini Angelo
Published: August 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.
Biocatalysis in Ionic Liquids
Authors: van Rantwijk Fred , Sheldon Roger A.
Published: August 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.
Anion Binding Involving π‐Acidic Heteroaromatic Rings
Authors: Gamez Patrick , Mooibroek Tiddo J. , Teat Simon J. , Reedijk Jan
Published: August 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.
Catalysis of Stannane‐Mediated Radical Chain Reactions by Benzeneselenol
Authors: Crich David , Grant Daniel , Krishnamurthy Venkataramanan , Patel Mitesh
Published: August 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.
Current Troeger′s Base Chemistry
Authors: Dolensky Bohumil , Elguero Jose , Kral Vladimir , Pardo Carmen , Valik Martin
Published: August 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, Structures and Reactivity of Polyhalo[60]fullerenes
Authors: Goryunkov A. A. , Ovchinnikova N. S. , Trushkov I. V. , Yurovskaya M. A.
Published: August 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.
Transition Metal Mediated Functionalization and Multiplication of Porphyrins Toward Giant Functional Systems
Authors: Satake Akiharu
Published: August 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.
Development of Industrial Process for Optically Active Propanol Derivatives and Their Applications
Authors: Furukawa Yoshiro , Suzuki Toshio , Mikami Masafumi , Kitaori Kazuhiro , Yoshimoto Hiroshi
Published: August 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.
Total Synthesis of (+)‐Scyphostatin, a Neutral Sphingomyelinase Inhibitor
Authors: Inoue Munenori , Yokota Wakako , Katoh Tadashi
Published: August 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.
Discotic Liquid Crystals: From Tailor‐Made Synthesis to Plastic Electronics
Authors: Laschat Sabine , et al. et al.
Published: August 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.
Finding a Needle in a Haystack: Direct Determination of Vibrational Signatures in Complex Systems
Authors: Herrmann Carmen , Neugebauer Johannes , Reiher Markus
Published: August 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.
Development of Intracellular Drug Delivery System Using Fusogenic Liposomes
Authors: Yoshikawa Tomoaki , Okada Noaki , Nakagawa Shinsaku
Published: August 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.
Tertiary Clarifier Design Concepts and Considerations
Authors: Reardon Roderick D.
Published: August 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.
Channel‐Forming Activity of Alamethicin: Effects of Covalent Tethering
Authors: Woodley G. Andrew
Published: August 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.
An examination of the relationships among market orientation, innovation resources, reputational resources, and company performance in the transitional economy of Slovenia
Authors: Snoj Boris , Milfelner Borut , Gabrijan Vladimir
Published: August 2007

We investigated relationships among market orientation, innovation and reputational resources, and their impact on market performance and financial performance within the transitional economy of Slovenia. Market orientation related positively to market and financial performance of firms indirectly through innovation and reputational resources. Reputational resources associated positively with loyalty, market share, and sales volume, innovation resources associated positively with market share, and sales volume indirectly through customer loyalty. Selected marketing resources related positively to financial performance indirectly through customer loyalty, market share, and sales volume. The implications of these findings for theory and practice are considered. Copyright © 2007 ASAC. Published by John Wiley & Sons, Ltd.
The Impact of an Artificial Water Enhancement Scheme on Phosphorus Dynamics in an Urban Floodplain System in Vienna (Austria)
Authors: Bondar Elisabeth , Kucera‐Hirzinger Verena , Preiner Stefan , Weigelhofer Gabriele , Schiemer Friedrich , Hein Thomas
Published: August 2007

Due to human impacts, floodplains in urban regions are often simultaneously affected by eutrophication, loss of hydrological dynamics and even land use change. In order to mitigate some of these effects in a degraded floodplain within the city limits of Vienna, the “Dotation Lobau” a water enhancement scheme, was initiated in 2001. The present contribution demonstrates the effects of surface reconnection, with a low discharge (mean 0.2 m3 s–1), on the phosphorus budget, by comparing connected and isolated backwaters. The surface water supply resulted in a decrease of mean trophic levels due to a decreased hydrological retention time and the establishment of a transport phase (phosphorus output). Furthermore, the study indicated that primarily sediment‐associated processes, such as the accumulation or release of phosphorus, will influence the long term development of the floodplain. (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
Life at the Edge: Habitat Condition and Bottom Faunaof Alpine Running Waters
Authors: Füreder Leopold
Published: August 2007

Alpine river systems are fed by glacial icemelt, snowmelt, and groundwater and share common features (e.g., steep gradients, high flow velocities and dynamics) but each source produces a characteristic discharge regime and a distinctive suite of physical and chemical characteristics. The distribution of snow, ice, and groundwater springs varies spatially from stream‐reach to catchment scale, resulting in stream segments with characteristics, reflecting the different runoff sources. In recent investigations we have been focusing on the large variety of natural freshwater ecosystems in the Hohe Tauern Nationalpark and, based on hydromorphological conditions at catchment and reach scale, we defined specific river types. Glaciation in the catchment turned out to be a major factor for defining the hydromorphological conditions. Subsequently, we tested the effect of glaciation on the bottom fauna in applying a preliminary set of species traits, indicating strategies and adaptations of resilience and resistance as well as to face environmental harshness. Our results demonstrated the high degree of adaptation of the bottom fauna in alpine streams but especially in glacial streams. As current climate change scenarios propose major impacts at both high altitude and latitudes, considerable changes within the faunal assemblages including species number, densities and the distribution of species traits are to be expected. (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
Vertical Distribution of Invertebrates in Bed Sediments of a Gravel Stream in the Czech Republic
Authors: Omesová Marie , Helešic Jan
Published: August 2007

The vertical distribution of invertebrates in bed sediments was studied in a gravel stream in the hercynian region of Central Europe, using freeze‐cores to the depth of 70 cm at two sites with different flow conditions, taken on five occasions. About 78% of invertebrates were concentrated in the upper 20 cm layer. The invertebrate communities at the two sites varied in abundance, diversity, vertical distribution and stability of vertical distribution with time. Densities of invertebrates were not limited by fine grain content and showed a site‐specific relationship with organic carbon content. Depth optima of invertebrates were negatively correlated with surface water temperature, but not with measured hydraulic parameters. Among individual taxa, Nematoda showed the deepest depth optimum. (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
Benthic Invertebrates in Karst Springs: Does Substratum or Location Define Communities?
Authors: Dumnicka Elżbieta , Galas Joanna , Koperski Paweł
Published: August 2007

Only a few studies to‐date have dealt with the habitat preferences of the fauna of springs. The main objective of our study was to fill this gap. The research was carried out in springs situated in the Kraków‐Częstochowa Upland, Poland. The benthic fauna was collected from fine and coarse substrata using a typical hydrobiological approach. Forty‐nine families or subfamilies and four higher taxa (Hydrozoa, Turbellaria, Nematoda, Hydracarina) were found in the springs studied. Invertebrates collected in springs were successfully classified into groups and, using the Analysis of Discriminant Function, were found to diverge in terms of substratum type. This prediction was 96% accurate for samples collected from fine sediments and 91% for samples collected from coarse sediments; the differences were higher in springs located in the southern part of the study area. Substratum type was found to be the main discriminatory factor with regard to the fauna density while faunal composition was related to the geographical position of springs. Our results emphasise that, even in very small habitats such as springs, all major substratum types should be considered for sampling. (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
Strategies of Coexistence of Two Species: Erpobdella octoculata and E. vilnensis (Hirudinea: Erpobdellidae)
Authors: Schenková Jana , Jarkovský Jiří , Helešic Jan
Published: August 2007

Populations of Erpobdella octoculata and E. vilnensis were studied monthly over two years (May 1999–April 2001) at four sampling points on the river Rokytná (Czech Republic). The water depth and velocity were measured and the Froude number for each sample was calculated to follow flow conditions above the bottom. Temporal differences in biomass of the two species were studied by comparing their wet weights and evaluated by the time series analysis; differences in their diets were evaluated by gut content analyses. Significantly different hydrodynamic preferences for juvenile and adult stages of E. octoculata and E. vilnensis were recorded. In E. vilnensis only, an annual cycle was recorded with a one‐month shift of mean weights compared to E. octoculata. This shift, together with the correlation of the leeches wet weights with their prey sizes and their distinct habitat preferences are suggested as mechanisms that explain their coexistence. (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
Erratum: Symmetry, XPD, and port isolation in an ACMPA array with dual linear polarization
Authors: Torres‐Sánchez Roberto , Casares‐Miranda Francisco P. , Márquez‐Segura Enrique , Otero Pablo
Published: August 2007

Originally published Microwave Opt Technol Lett 49: 1722–1727, 2007. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 2886, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22803
Erratum: Application of the Foldy‐Lax multiple scattering method to the analysis of vias in ball grid arrays and interior layers of printed circuit boards
Authors: Ong C.‐J. , Tsang L.
Published: August 2007

Originally published Microwave Opt Technol Lett 49:225–231. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 2887, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22804
Design considerations of a broad band microstrip antenna with embedded negative capacitor loading
Authors: Kaya Adnan
Published: August 2007

In this article, effects of negative capacitor loading on the bandwidth (BW) and efficiency of a rectangular microstrip antenna (RMSA) have been investigated. The active negative capacitor is made of a field‐effect transistor that exhibits negative resistance as well as capacitance. It can, therefore, compensate the loss of an inductor having antenna. A single negative‐capacitor‐loaded RMSA gives broadband frequency operation with broadband radiation. A microstrip patch operating at 10.5 GHz having 12.22% BW has been utilized as a reference antenna. Theoretical results for the impedance and the radiation patterns have been presented. It is also shown that the impedance BW of the antenna has been enhanced by using active negative capacitance networks from 12.22% to 16.96%, respectively. In addition, it has been shown that active compensation significantly improves the radiation pattern. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 2651–2656, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22806
An advanced RFID system to avoid collision of RFID reader, using channel holder and dual sensitivities
Authors: Chung Harrison B. , Mo Heesook , Kim Naesoo , Pyo Cheolsig
Published: August 2007

Recently, RFID system has become popular and has been growing rapidly. Due to using many readers in limited area, RFID reader collision problem occurs when the reader is interfered with the signals from neighbor readers or other devices. Even if 50 channels are available in North America, 15 channels in Europe and 25 channels in Korea are available. Moreover, in the future, if many mobile (cellular) RFID readers might be used in limited area simultaneously, the number of channels is not enough, and the collision problem might be more serious. Therefore, this paper proposes an advanced RFID system with a channel holder and dual reader sensitivities/reduced reader output power. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 2643–2647, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22808
Surface character of laser assisted wet chemical etching of YBCO high temperature superconducting film
Authors: Liu Juan‐Xiu , Yang Kai , Liu Lin , Bu Shi‐Rong , Luo Zheng‐Xiang
Published: August 2007

The laser assisted wet chemical etching technology was proposed in this study to apply in the etching of YBCO high temperature superconducting film, which was an intercrossing application involving superconducting electronics, laser technique, and chemistry. The etched surfaces and change characteristics were studied and some important experimental results were reported, including the influences of laser density, etching duration, and direction of LaAlO3 underlay on the etching characters of YBCO film under laser radiation. The main experimental results are as follows: the etching rate of YBCO film is accelerated dramatically under laser radiation and the rate is increased over time; the etching rate is relative with the laser power density; there is no strict boundary under the whole laser facula and the surface etching degree of YBCO film changes gradually; the etched surface characteristics are greatly influenced by the direction of LaAlO3 underlay. The laser assisted wet chemical etching technology of YBCO film can overcome the defect of common wet and dry ion etching technology, and probably becomes the main etching technology of YBCO film. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 2672–2675, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22809
A Ka‐band equal‐branch waveguide power divider
Authors: Guo Yunchuan , Xu Yuehang , Xu Ruimin
Published: August 2007

A Ka‐band equal‐branch waveguide power divider is proposed in this letter. This waveguide power divider has the uniform main guide and all the branches in same size to minimize the difficulty and sensitivity in the mechanical fabrication. Full‐wave simulation and in‐door measurement are also carried to validate this design. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 2637–2639, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22811
Bandpass filter of forked step impedance resonator with harmonic suppression in diplexer applications
Authors: Ho Min‐Hua , Hsu Chung‐I G. , Rao Chen‐Mao
Published: August 2007

A novel two‐stage forked stepped‐impedance‐resonator (FSIR) bandpass filter design is presented. The FSIR originated from an SIR has its both open ends split as a fork structure. A tunable zero from the coupled lines is created to suppress the second harmonic of the resonator. Two additional zeros obtained from using the asymmetric tapped‐line feed are used to improve the filter's frequency selectivity. A diplexer design based on the FSIR structure is presented. Experiments are conducted to verify the circuit design. Good agreements between the measurements and the simulations are observed. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 2665–2668, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22813
Low‐profile dual‐frequency GPS patch antenna enhanced with dual‐band EBG structure
Authors: Bao X. L. , Ruvio G. , Ammann M. J.
Published: August 2007

A novel low‐cost low‐profile dual‐frequency circularly polarized patch antenna for GPS applications is presented. By stacking two square patches with truncated corners on a two‐layer fractal electromagnetic bandgap structure substrate, the coverage of the entire GPS bandwidth is achieved. Two bandgaps exist for the proposed fractal EBG structure, from 1.16 to 1.32 GHz and from 1.45 to 2.10 GHz, which include the lower and upper frequency GPS band. The antenna is low‐profile and has improved gain and axial ratio bandwidth, as well as broader impedance bandwidths compared to the same antenna without EBG. Good circularly polarized radiation patterns are realized. Measurements on prototypes are in good agreement with simulation. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 2630–2634, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22815
A method to measure reference strain in FBG strain sensor interrogation system involving actuators
Authors: Rajan Ginu , Semenova Yuliya , Wang Qian , Farrell Gerald , Wang Pengfei
Published: August 2007

A method for reference strain measurement for FBG strain sensor in the testing stage while applying strain using actuators like piezo translators or micro screw is introduced. Unlike conventional methods of surface mounting, in our method the strain gauge is affixed directly to the optical fibre, which allows it to use with systems where the strain is applied directly using actuators while testing the FBG sensing system. Different bonding techniques were tested and a comparison with the results from calculated values are presented. Since the contact area between the fibre and strain gauge is very small, a corrected gauge factor is calculated and is used to measure the strain transfer. As a demonstration of the developed method, the strain gauge is used as a reference in an edge filter based FBG sensors interrogation system, where the strain was applied using a micro screw. The measured strain using foil strain gauge affixed to the optical fibre and FBG sensor interrogation system are in close agreement. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 2658–2661, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22817
A Clapp LC‐tank injection locked frequency divider
Authors: Jang Sheng‐Lyang , Wu Y.‐J. , Lee Chien‐Feng , Juang M.‐H.
Published: August 2007

The design of a frequency divider (FD) employing 3‐dimensional (3D) inductors fabricated in the 0.18‐μm 1P6M CMOS technology is reported. The FD consists of two single‐ended complementary Colpitts oscillators coupled with capacitors to generate differential output signals. The aim of using 3D inductor is to reduce chip size. The divide‐by‐2 LC‐tank injection locked FD is performed by adding an injection nMOS between the differential outputs of the divider. The measurement results show that at the supply voltage of 1.6 V, the divider free‐running frequency is tunable from 3.05 to 3.52 GHz, and at the incident power of 0 dBm the locking range is about 2.9 GHz (43%), from the incident frequency 5.3–8.2 GHz. The core power consumption is 7.14 mW. The die area is 0.625 × 0.672 mm2. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 2625–2628, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22819
On compact printed‐circuit transmission lines
Authors: Djordjević Antonije R. , Djurić Milica D. , Tošić Dejan V. , Sarkar Tapan K.
Published: August 2007

For the purpose of designing miniature microstrip transmission lines and their substitutes we consider various structures and compare their electrical properties and footprint. Straight transmission lines have the best wideband performance, followed by meander lines. Photonic band‐gap structures are inferior. The footprint areas for all structures are similar. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 2706–2709, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22822
Compact hollowed printed monopole antenna with extremely wide bandwidth
Authors: Yan Xiao‐Rong , Zhong Shun‐Shi , Wang Guo‐Yu
Published: August 2007

A compact hollowed printed monopole antenna with an extremely wide bandwidth is introduced, which is composed of a hollowed elliptical monopole patch and a trapeziform ground plane, both printed on the same side of a substrate, and is fed by a tapered CPW feeder in the middle of the ground plane. The simulated and experimental results agree well and demonstrate that this antenna achieves a measured impedance bandwidth from 0.44 to 10.6 GHz (24.1:1) for VSWR ≤ 2, and exhibits a nearly omnidirectional radiation pattern, while its area is only about 0.20λl
× 0.13 λl, where λl is the wavelength of the lowest operating frequency. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 2883–2886, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22829
A hybrid QR factorization with Dual‐MGS and adaptively modified characteristic basis function method for electromagnetic scattering analysis
Authors: Han Guodong , Gu Changqing
Published: August 2007

In this article, a hybrid method of adaptively modified characteristic basis function method (AMCBFM) and QR factorization with a dual modified Gram‐Schmidt (Dual‐MGS) algorithm, which is called QR‐AMCBFM, is presented. The first step is to derive the primary basis functions by using AMCBFM. To get the high‐level basis functions, QR factorization algorithm with Dual‐MGS is used to decompose the mutual coupling matrices. Different threshold values for the near and far field domains are set in the QR scheme. When the numerical rank gotten in the upper program is down to a set threshold, the rest interaction between farther blocks would be ignored. Subsequently, the high‐level characteristic basis functions and the coefficient of current are calculated. Once the adjacent currents precision arrives at a certain criterion, the higher‐level basis functions are thought of unnecessary. The hybrid algorithm estimates adaptively in the entire process. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 2879–2883, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22830
A complementary Hartley injection‐locked frequency divider
Authors: Jang Sheng‐Lyang , Lin Che Yi , Lee Chien.‐Feng. , Juang Miin‐Horng
Published: August 2007

This work proposes a new injection‐locked frequency divider (ILFD) based on the differential complementary Hartley VCO topology. At the supply voltage of 1.8 V, the tuning range of the free running ILFD is from 7.54 to 7.94 GHz, about 400 MHz, and the locking range of the ILFD is from 14.94 to 16.05 GHz, about 1.11 GHz, at the injection signal power of 0 dBm. The ILFD dissipates 13.54 mW at the supply voltage of 1.8 V and was fabricated in the 1P6M 0.18 μm CMOS process. The phase noise of the locked ILFD tracks with the low‐phase‐noise injection source. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 2817–2820, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22834
Design strategies for dual‐band Class‐E power amplifier using composite right/left‐handed transmission lines
Authors: Thian Mury , Fusco Vincent
Published: August 2007

In this article we propose a technique for dual‐band Class‐E power amplifier design using composite right/left‐handed transmission lines, CRLH TLs. Design equations are presented and design procedures are elaborated. Because of the nonlinear phase dispersion characteristic of CRLH TLs, the single previous attempt at applying this method to dual band Class‐E amplifier design was not sufficient to simultaneously satisfy the minimum requirement of Class‐E impedances at both the fundamental and the second harmonic frequencies. This article rectifies this situation. A design example illustrating the synthesis procedure for a 0.5W‐5V dual band Class‐E amplifier circuit simultaneously operated at 900 MHz and 2.4 GHz is given and compared with ADS simulation. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 2784–2788, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22836
Compact designs of a band‐pass filter with novel open‐loop resonators
Authors: Jiang Xin‐Hua , Li Guo‐Hui
Published: August 2007

In this article, several square open‐loop resonators with transmission lines are proposed to design the optimized bandpass filters. A compact microstrip filter using an open‐loop resonator was designed, fabricated and measured. At the center frequency f0 = 1.80 GHz, a 3‐dB bandwidth of 5% can be varied from 1.76 to 1.85 GHz. The filter shows a maximum insertion loss in passband of 0.1 dB. A transmission zero is realized at about 3.1 GHz, and the attenuation at this frequency exceeds 70 dB. When compared with the conventional filters using coupled square open‐loop resonators, the proposed filter has a size reduction of 30%. Good agreement between measurements and simulations are obtained. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 2755–2757, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22837