bluuebunny/crossref_metadata_2025 huggingface dataset:
Nonlinear modelling of data in photomineralization kinetics of organic micropollutants by photocatalytic membranes immobilizing titanium dioxide in membrane reactors
Authors: Bellobono Ignazio Renato , Bianchi Riccardo , de Martini Giulia , Tozzi Paola Maria , Bonardi Mauro Luigi , Groppi Flavia , Rossi Mauro
Published: March 2008

Kinetic fitting of substrate disappearance and of total organic carbon (TOC) mineralization of organic micropollutants, in water and air, by photocatalytic membranes immobilizing titanium dioxide, was carried out. A model was used in which mineralization of substrate to CO2 is supposed to occur, with kinetic constant k1, through one single intermediate, mediating the behaviour of all the numerous real intermediates formed in the path to CO2, kinetic constant of formation of the latter being k2. A competitive Langmuirian‐type adsorption of both substrate and ‘intermediate’ was also supposed to be operative, as expressed by pseudo‐thermodynamic constants K1 and K2 respectively, these constants possessing a, partly at least, kinetic significance. Nonlinear models could be fitted to data by using the least‐squares method. The very satisfactory matching is shown for the laboratory‐scale mineralization kinetics of methane, as model molecule of aliphatic contaminants, both in the gas phase and in aqueous solution. Furthermore, in pilot plant experiments, using phenol, as model molecule of aromatics, modelling of quantum yields was carried out, as a function of concentration and of adsorbed radiant power. Kinetics of hydroxyl radicals reacting between themselves, leading to hydrogen peroxide, other than with substrate or intermediates leading to mineralization, was considered, paralleled by a second competition kinetics due to superoxide anion radical and its conjugate acid, equally leading to mineralization. In this model the contribution of hydroxyl radicals to mineralization decreases with irradiance, while the contribution of superoxide anion radical and its conjugate acid increases. If the regression equations of these two contributions are considered together, in a linear combination, the surface model perfectly fits the experimental data. Copyright © 2008 John Wiley & Sons, Ltd.
Frequency‐Dependent Alternating‐Current Scanning Electrochemical Microscopy (4D AC‐SECM) for Local Visualisation of Corrosion Sites
Authors: Eckhard Kathrin , Erichsen Thomas , Stratmann Martin , Schuhmann Wolfgang
Published: March 2008

For a better understanding of the initiation of localised corrosion, there is a need for analytical tools that are capable of imaging corrosion pits and precursor sites with high spatial resolution and sensitivity. The lateral electrochemical contrast in alternating‐current scanning electrochemical microscopy (AC‐SECM) has been found to be highly dependent on the frequency of the applied alternating voltage. In order to be able to obtain data with optimum contrast and high resolution, the AC frequency is swept in a full spectrum at each point in space instead of performing spatially resolved measurements at one fixed perturbation frequency. In doing so, four‐dimensional data sets are acquired (4D AC‐SECM). Here, we describe the instrument set‐up and modus operandi, along with the first results from the imaging of corroding surfaces. Corrosion precursor sites and local defects in protective organic coatings, as well as an actively corroding pit on 304 stainless steel, have been successfully visualised. Since the lateral electrochemical contrast in these images varies with the perturbation frequency, the proposed approach constitutes an indispensable tool for obtaining optimum electrochemical contrast.
Acid–Base Bifunctional Catalysis of Silica–Alumina‐Supported Organic Amines for Carbon–Carbon Bond‐Forming Reactions
Authors: Motokura Ken , Tomita Mitsuru , Tada Mizuki , Iwasawa Yasuhiro
Published: March 2008

Acid–base bifunctional heterogeneous catalysts were prepared by the reaction of an acidic silica–alumina (SA) surface with silane‐coupling reagents possessing amino functional groups. The obtained SA‐supported amines (SA–NR2) were characterized by solid‐state 13C and 29Si NMR spectroscopy, FT‐IR spectroscopy, and elemental analysis. The solid‐state NMR spectra revealed that the amines were immobilized by acid–base interactions at the SA surface. The interactions between the surface acidic sites and the immobilized basic amines were weaker than the interactions between the SA and free amines. The catalytic performances of the SA–NR2 catalysts for various carbon–carbon bond‐forming reactions, such as cyano‐ethoxycarbonylation, the Michael reaction, and the nitro‐aldol reaction, were investigated and compared with those of homogeneous and other heterogeneous catalysts. The SA–NR2 catalysts showed much higher catalytic activities for the carbon–carbon bond‐forming reactions than heterogeneous amine catalysts using other supports, such as SiO2 and Al2O3. On the other hand, homogeneous amines hardly promoted these reactions under similar reaction conditions, and the catalytic behavior of SA–NR2 was also different from that of MgO, which was employed as a typical heterogeneous base. An acid–base dual‐activation mechanism for the carbon–carbon bond‐forming reactions is proposed.
ChemInform Abstract: Emergent Reduction of Electronic State Dimensionality in Dense Ordered Li—Be Alloys.
Authors: Feng Ji , Hennig Richard G. , Ashcroft N. W. , Hoffmann Roald
Published: March 2008

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Crystal Structures, Optoelectronic Properties, and Electronic Structures of Layered Oxychalcogenides MCuOCh (M: Bi, La; Ch: S, Se, Te): Effects of Electronic Configurations of M3+ Ions.
Authors: Hiramatsu Hidenori , Yanagi Hiroshi , Kamiya Toshio , Ueda Kazushige , Hirano Masahiro , Hosono Hideo
Published: March 2008

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: A Combination of Lacunary Polyoxometalates and High‐Nuclear Transition‐Metal Clusters under Hydrothermal Conditions. Part 2. From Double Cluster, Dimer, and Tetramer to Three‐Dimensional Frameworks.
Authors: Zhao Jun‐Wei , Jia Hong‐Peng , Zhang Jie , Zheng Shou‐Tian , Yang Guo‐Yu
Published: March 2008

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Hydrothermal Synthesis of Single‐Crystal Szaibelyite MgBO2(OH) Nanobelt as a New Host Material for Red‐Emitting Rare‐Earth Ions.
Authors: Liu Jinping , Li Yuanyuan , Huang Xintang , Li Zikun , Li Guangyun , Zeng Haibo
Published: March 2008

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Ba2Mn2O4Cu0.9S: A Layered Oxysulfide with a New Perovskite‐Related Manganese Oxide Fragment.
Authors: Hyett Geoffrey , Gal Zoltan A. , Smura Catherine F. , Clarke Simon J.
Published: March 2008

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Highly Swollen Layered Nickel Oxide with a Trilayer Hydrate Structure.
Authors: Yang Xiaojing , Takada Kazunori , Itose Masayuki , Ebina Yasuo , Ma Renzhi , Fukuda Katsutoshi , Sasaki Takayoshi
Published: March 2008

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Novel Photoinduced Reduction of Conjugate Dienes by the Combination of Benzenethiol and Diphenyl Diselenide.
Authors: Mitamura Takenori , Imanishi Yoshiaki , Nomoto Akihiro , Sonoda Motohiro , Ogawa Akiya
Published: March 2008

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Hypohalogenation of Vinyl‐ and Allylacetylenes and Some Chemical Transformations of the Products.
Authors: Veliev M. G. , Sadygov O. A. , Alimardanov Kh. M. , Shatirova M. I.
Published: March 2008

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Iron‐Catalyzed Nucleophilic Substitution of Allylic Acetate.
Authors: Aakermark Bjoern , Sjoegren Magnus P. T.
Published: March 2008

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Efficient and General One‐Pot Synthesis of Diaryliodonium Triflates: Optimization, Scope and Limitations.
Authors: Bielawski Marcin , Zhu Mingzhao , Olofsson Berit
Published: March 2008

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Diastereodivergent Synthesis of Enantiomerically Pure Homoallylic Amine Derivatives Containing Quaternary Carbon Stereocenters.
Authors: Kolodney Goren , Sklute Genia , Perrone Sylvie , Knochel Paul , Marek Ilan
Published: March 2008

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Aerobic Oxidation under Visible Light Irradiation of a Fluorescent Lamp with a Combination of Carbon Tetrabromide and Triphenyl Phosphine.
Authors: Sugai Taichi , Itoh Akichika
Published: March 2008

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Asymmetric Tosylation of Racemic 2‐Hydroxyalkanamides with Chiral Copper Catalyst.
Authors: Onomura Osamu , Mitsuda Masaru , Nguyen My Thi Thuy , Demizu Yosuke
Published: March 2008

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: PdCl2, a Useful Catalyst for Protection of Alcohols as Diphenylmethyl (DPM) Ethers.
Authors: Bikard Yann , Weibel Jean‐Marc , Sirlin Claude , Dupuis Luc , Loeffler Jean‐Philippe , Pale Patrick
Published: March 2008

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Practical Synthesis of the Calcimimetic Agent, Cinacalcet.
Authors: Thiel Oliver R. , Bernard Charles , Tormos Wanda , Brewin Alan , Hirotani Shuji , Murakami Kazuo , Saito Kenji , Larsen Robert D. , Martinelli Michael J. , Reider Paul J.
Published: March 2008

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Synthesis of Chiral 3‐Substituted Indanones via an Enantioselective Reductive Heck Reaction.
Authors: Minatti Ana , Zheng Xiaolai , Buchwald Stephen L.
Published: March 2008

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Highly Regio‐ and Stereoselective [2 + 3] Cycloadditions of Azomethine Ylides to [70]Fullerene.
Authors: Troshin Pavel A. , Peregudov Alexander S. , Peregudova Svetlana M. , Lyubovskaya Rimma N.
Published: March 2008

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Palladium‐Catalyzed Double Annulations to Construct Multisubstituted Benzodifurans.
Authors: Liang Zhiqiang , Ma Shengming , Yu Jihong , Xu Ruren
Published: March 2008

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: A Facile Non‐Oxidative Method for Synthesizing 1,3‐Disubstituted Pyrroles from Pyrrolidine and Aldehydes.
Authors: Oda Mitsunori , Fukuchi Yosuke , Ito Satoshi , Nguyen Chung Thanh , Kuroda Shigeyasu
Published: March 2008

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Conjugate Addition of Indoles to α,β‐Unsaturated Ketones (Chalcones) Catalyzed by KHSO4 under Ultrasonic Conditions.
Authors: Zeng Xiao‐Fei , Ji Shun‐Jun , Shen Shu‐Su
Published: March 2008

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Synthesis of Ditopic Ligands Containing Bis(1H‐pyrazol‐1‐yl)methane Fragments.
Authors: Nudnova E. A. , Potapov A. S. , Khlebnikov A. I. , Ogorodnikov V. D.
Published: March 2008

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Synthesis of Novel Spiro Imidazolium Salts as Chiral Ionic Liquids.
Authors: Patil Mahesh L. , Rao C. V. Laxman , Takizawa Shinobu , Takenaka Kazuhiro , Onitsuka Kiyotaka , Sasai Hiroaki
Published: March 2008

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Palladium Pincer Complex Catalyzed Condensation of Sulfonimines and Isocyanoacetate to Imidazoline Derivatives. Dependence of the Stereoselectivity on the Ligand Effects.
Authors: Aydin Juhanes , Kumar K. Senthil , Eriksson Lars , Szabo Kalman J.
Published: March 2008

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Efficient Access to 5‐Substituted Thiazoles by a Novel Metallotropic Rearrangement.
Authors: Zambon Alfonso , Borsato Giuseppe , Brussolo Stefania , Frascella Pietrogiulio , Lucchini Vittorio
Published: March 2008

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Heterocyclic Thiones and Their Analogues in 1,3‐Dipolar Cycloaddition. Part 7. Reaction of 4‐Methyl‐1,3‐thiazole‐2(3H)‐thiones with Nitrile Imines.
Authors: Budarina E. V. , Dolgushina T. S. , Petrov M. L. , Labeish N. N. , Kol'tsov A. A. , Bel'skii V. K.
Published: March 2008

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: In(OTf)3‐Catalyzed Synthesis of 4‐Thiocyanotetrahydropyrans via a Three‐Component Reaction.
Authors: Yadav J. S. , Reddy B. V. Subba , Maity Tapas , Kumar G. G. K. S. Narayana
Published: March 2008

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: One‐Pot Synthesis of Functionalized Keteneimines by Three Component Reaction of Isocyanides, Dialkyl Acetylenedicarboxylates, and 4‐Phenylaminocoumarin.
Authors: Anary‐Abbasinejad Mohammad , Anaraky‐Ardakani Hossain , Rastegari Forough , Hassanabadi Alireza
Published: March 2008

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Alkyl 2‐Amino‐5,6‐dialkyl‐3‐cyanopyridine‐4‐carboxylates (I) in Reactions with Electrophilic Reagents.
Authors: Vasil'ev A. N. , Lyshchikov A. N. , Nasakin O. E. , Paramonov S. A. , Kayukov Ya. S.
Published: March 2008

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Reactions of 4‐Oxo‐1,3‐benzoxazinium Perchlorates with Guanidines.
Authors: Suvorova E. Yu. , Vikrishchuk N. I. , Popov L. D. , Starikova Z. A. , Vikrishchuk A. D. , Zhdanov Yu. A.
Published: March 2008

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Synthesis, Spectral Studies and Biological Activity of Novel 3H‐1,5‐Benzodiazepine Derivatives.
Authors: Kumar Rajesh , Joshi Y. C.
Published: March 2008

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Cationic Carboxylato Complexes of Dirhodium(II) with Oxo Thioethers: Catalysts for Silane Alcoholysis under Homogeneous and Liquid—Liquid Biphasic Conditions.
Authors: Biffis Andrea , Basato Marino , Brichese Marianna , Ronconi Luca , Tubaro Cristina , Zanella Alessandra , Graiff Claudia , Tiripicchio Antonio
Published: March 2008

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Mannich Type Reactions of Chlorophosphites, Phosphoramides and Aldehydes (Ketones) under Solvent‐Free and Catalyst‐Free Conditions—Synthesis of N‐Phosphoramino α‐Aminophosphonates.
Authors: Zhang Jianfeng , Cui Zhanwei , Wang Fei , Wang Yadan , Miao Zhiwei , Chen Ruyu
Published: March 2008

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Neocrocin A: A Novel Crocetin Glycoside with a Unique System for Binding Sugars Isolated from Gardenia Yellow.
Authors: Uekusa Yoshinori , Sugimoto Naoki , Sato Kyoko , Yun Young Sook , Kunugi Akira , Yamazaki Takeshi , Tanamoto Ken‐ichi
Published: March 2008

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Amino Acid Derivatives. Part 6. Synthesis, Antiviral, and Antimicrobial Evaluation of α‐Amino Acid Esters Bearing a 1,2,3‐Triazolo[4,5‐d]pyrimidinedione Side Chain.
Authors: Abdel‐Rahman Adel A.‐H.
Published: March 2008

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Amino Acid Derivatives. Part 5. Synthesis and Antiviral Evaluation of α‐Amino Acid Esters Bearing an α‐D‐Mannofuranoside Side Chain.
Authors: Ali Omar M. , Abdel‐Rahman Adel A.‐H.
Published: March 2008

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: An Efficient Synthesis of Bibenzylic Oxygen Heterocycles.
Authors: Kumbhar Virendra B. , Joseph Augustine R. , Natu Arun D. , Kusurkar Radhika S. , Paradkar Madhusudan V.
Published: March 2008

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Organic Template‐Free Synthesis of ZSM‐34 Zeolite from an Assistance of Zeolite L Seeds Solution.
Authors: Wu Zhifeng , Song Jiangwei , Ji Yanyan , Ren Limin , Xiao Feng‐Shou
Published: March 2008

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Reactivity of Trihexyl(tetradecyl)phosphonium Chloride, a Room‐Temperature Phosphonium Ionic Liquid.
Authors: Tseng Ming‐Chung , Kan Huang‐Chuan , Chu Yen‐Ho
Published: March 2008

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Synthesis and Analgesic and Antiinflammatory Activity of Ethyl (6‐Substituted‐3‐(2H)‐pyridazinone‐2‐yl)acetate Derivatives.
Authors: Duendar Yasemin , Goekce Mehtap , Kuepeli Esra , Sahin Mustafa Fethi
Published: March 2008

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Reactivity of Ligands
Authors: Kukushkin V. Yu. , Bokach N. A.
Published: March 2008

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Simple Synthesis of Organo‐Iron Complexes from Iron‐Sandwich Raw Materials Using Visible Light
Authors: Aranzaes Jaime Ruiz , Astruc Didier
Published: March 2008

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Transition Metal‐Catalyzed and ‐Promoted Reactions via Carbene and Vinylidene Complexes Generated from Alkynes
Authors: Ohe Kouichi
Published: March 2008

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Cycloacylation of Thioamides and Their Derivatives by Compounds Containing an Activated Multiple Bond
Authors: Britsun V. N. , Lozinskii M. O.
Published: March 2008

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Strategies for the Synthesis of Manzamine Alkaloids
Authors: Nishida Atsushi , Nagata Toshiaki , Nakagawa Masako
Published: March 2008

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Tetrahydrobiopterin and Related Biologically Important Pterins
Authors: Murata Shizuaki , Ichinose Hiroshi , Urano Fumi
Published: March 2008

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Reactivity of Chromium Complexes under Spin Control
Authors: Koehn Randolf D.
Published: March 2008

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Prodrug Strategies in Anticancer Chemotherapy
Authors: Kratz Felix , Mueller Ivonne A. , Ryppa Claudia , Warnecke Andre
Published: March 2008

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Effects of Membrane Structure on Apolipoprotein A‐I Binding to Lipid
Authors: Tanaka Masafumi
Published: March 2008

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: The Role of Isomerized Protein Repair Enzyme, PIMT, in Cellular Functions
Authors: Furuchi Takemitsu , Homma Hiroshi
Published: March 2008

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Proceedings of Clinical Pharmacy Research by the Cooperation with Community and Hospital Pharmacist and Pharmacy School
Authors: Hirotani Yoshihiko
Published: March 2008

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Selective Recognition and Detection of Biomacromolecules Utilizing Chemical Property of Amino Acid or Peptide
Authors: Umezawa Naoki , Akita Shoji , Kamoto Mie , Higuchi Tsunehiko
Published: March 2008

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 of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
Pumpen für spezielle Anwendungen – Förderung von verflüssigten Gasen und CO2
Authors: Mollenhauer H.
Published: March 2008

In der Flüssiggasfördertechnik ist es von besonderer Bedeutung, dass alle Komponenten des Systems geeignet und aufeinander abgestimmt sind, da das Versagen eines Elements zum Ausfall des gesamten Systems führen kann. Vorrangig ist die Auswahl der richtigen Pumpe, da sich die durch nicht geeignete Pumpen in einer Flüssiggasanlage entstehenden Defizite auch durch kostenintensive Kompensationsmaßnahmen nie völlig ausgleichen lassen und Leistungseinbußen sowie Einschränkungen der Betriebssicherheit bewirken. Es werden speziell für die Flüssiggasförderung entwickelte Pumpen vorgestellt, die allen Anforderungen dieser nicht unproblematischen Anwendungstechnik gerecht werden.
Hermetische Verdrängerpumpen nach dem Ringkolbenprinzip (Mouvex‐Prinzip)
Authors: Voland R.
Published: March 2008

Aufgrund ihrer hermetischen Konstruktion benötigen Ringkolbenpumpen der C‐Serie weder Gleitringdichtungen noch Magnetkupplungen. Sie sind deshalb besonders für das Fördern und Dosieren von abrasiven, aggressiven, gefährlichen oder scherempfindlichen Fördergütern geeignet. Des Weiteren sind sie trockenlauffähig und verfügen über ein sehr gutes Ansaugvermögen. Als weitere Merkmale der hermetischen Pumpentechnologie sind die hohe Verschleißresistenz und ‐kompensation, das pulsationsfreie, dosiergenaue und schonende Fördern sowie die CIP‐ (Cleaning in Place) und SIP (Sterilisation in Place)‐Eignung zu nennen.
DiamondFaces® – eine leistungsstarke Oberflächenbeschichtung in Theorie und Praxis
Authors: Ziegenbein D.
Published: March 2008

Die in den letzten 10 – 15 Jahren immer mehr bei den Gleitringen verbreiteten SiC/SiC‐Werkstoffpaarungen haben hervorragende chemische Beständigkeit, hohe Abriebfestigkeit und nahezu keinen Verschleiß – dies jedoch nur bei ausreichender Schmierung im Dichtspalt. Jede Form von Mangelschmierung durch Trockenlauf führt zu starker Temperaturerhöhung mit Schädigung der Gleitflächen und Nebendichtungen (O‐Ringe). Bis zum Totalausfall der Gleitflächen vergehen im Extremfall nur wenige Sekunden. Genau hier setzt die vorgestellte Diamanttechnologie an. Die kristalline Diamantschicht, die in ihren Eigenschaften dem Naturdiamanten in nichts nachsteht, eignet sich für Anwendungen in der Öl‐ und Gasindustrie (z. B. Multiphasenpumpen), „Slurry”︁‐Anwendungen, Chemie, Pharma‐ und Haustechnik. Die Diamantschicht auf den Gleitringen zeichnet sich durch extreme Härte und Verschleißschutz, exzellente Wärmeleitfähigkeit, höchste chemische Beständigkeit und geringe Reibwerte mit maximaler Haftung auf dem Trägermaterial aus.
Uneingeschränkter Trockenlauf magnetisch gekuppelter Kreiselpumpen
Authors: Renner M.
Published: March 2008

Absoluter Trockenlauf oder Mangelschmierung sind immer wieder auftretende Betriebszustände von Pumpen. Den Trockenlauf durch eine pumpeneigene Funktion beherrschen zu können, ist seit langem der Wunsch der Pumpenbetreiber. Magnetisch gekuppelte Kreiselpumpen mit Gleitlagerungstechnik haben sich vor allem durch Fortschritte in der Werkstofftechnik und der Konstruktion zu einer zuverlässigen und robusten Lagertechnik entwickelt, die über viele Jahre ohne Wartungsbedarf praktisch verschleißfrei arbeiten. Die Gleitlager benötigen jedoch als Schmiermittel das Fördermedium, das im Falle eines Trockenlaufes nicht zur Verfügung steht. Durch das Beschichten der Lageroberflächen mit diamantähnlichen Materialien werden diese nicht durch die Mangelschmierung beschädigt. Bei völligem Trockenlauf ist die Temperaturerhöhung im Lagerbereich durch die reduzierte Reibung zwar deutlich geringer als ohne Beschichtung, jedoch für eine Kunststoffkreiselpumpe immer noch zu groß, um einen Lagerschaden nach längerem Trockenlauf zu vermeiden. Eine uneingeschränkt trockenlaufsichere, magnetisch gekuppelte Kreiselpumpe wird vorgestellt.
Electronic Structure of the Ground and Excited States of β‐Carboline
Authors: Pérez Mondéjar Vicente , García Cuesta Inmaculada , Lazzeretti Paolo , Sánchez‐Marín José , Sánchez de Merás Alfredo
Published: March 2008

Coupled‐cluster calculations are used to compute the energy of conversion between the neutral and the zwitterionic forms of β‐carboline. The stability of the different species is discussed in terms of charge separation and aromatic character, which is related to magnetic criteria. By means of a linear response formalism the vertical excitation energies and oscillator strengths of the lowest singlet states of both structures as well as of the cationic species are determined. General agreement of the relative position and intensity of the different peaks with experimental data is achieved, but the overall spectra are slightly displaced because of solvent effects.
Growth and characterization of pure and lithium doped L‐alanine single crystals for NLO devices
Authors: Suresh Kumar B. , Sudarsana Kumar M. R. , Rajendra Babu K.
Published: March 2008

Single crystals of pure and lithium substituted L‐alanine are successfully grown by slow evaporation method at constant temperature of 32°C. The effect of lithium dopant on crystal properties has been studied. Powder and single crystal XRD analysis confirms the structure and change in lattice parameter values for the doped crystals. The crystals were characterized by solubility studies, density, melting point measurements, FTIR and UV‐Vis‐NIR techniques. Thermal and mechanical stability of crystals were tested by TGA/DTA and micro hardness analysis. NLO activity of the crystals is found to be increased in the presence of lithium ions. The dielectric constant and dielectric loss of the crystals were studied as a function of frequency. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
Syntheses and crystal structures of two new coordination polymers constructed from 2‐bromo‐1,4‐benzenedicarboxylate
Authors: Wang Shengwen
Published: March 2008

To explore the possibility of obtaining the metal‐organic frameworks (MOFs) bearing the 2‐bromo‐1,4‐benzenedicarboxylate ligand, one new Mn(II) and one Co(II) coordination polymers, [Mn(HL)2(bipy)2·2H2O]·bipy (1) and [Co(L)(bpe)] (2) (bipy=4,4′‐bipyridine; bpe=1,2‐bis(4‐pyridyl)ethene) were synthesized and characterized by elemental analysis and X‐ray diffraction analysis. Compounds 1 exhibits one‐dimensional coordination chains, which are further connected to form two dimensional supramolecular networks through hydrogen bonding interactions. Compound 2 presents a two‐fold interpenetrating two‐dimensional layer structure. The 2‐bromo‐1,4‐benzenedicarboxylate anion exhibits different coordination modes in the two complexes. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
Members of the WNT signaling pathways are widely expressed in mouse ovaries, oocytes, and cleavage stage embryos
Authors: Harwood Benjamin N. , Cross Sophia K. , Radford Emily E. , Haac Bryce E. , De Vries Wilhelmine N.
Published: March 2008

The mammalian oocyte‐to‐embryo transition, characterized by a period of transcriptional silence, is dependent on maternal RNAs and proteins produced during the growth phase of the oocyte. Signaling pathways control timely transcription and translation of RNA, as well as post‐translational modification of proteins. The WNT/β‐catenin pathway is clearly not active during preimplantation embryo development. However, alternative Wnt signaling pathways may play a role during early embryo development. This study describes the extensive expression, at the transcript and protein level, of receptors, ligands, and intracellular molecules known to play a role in WNT signaling, as well as those known to negatively regulate the canonical WNT/β‐catenin pathway in developing oocytes and preimplantation embryos. This expression of a wide array of molecules involved in WNT signaling suggests that the alternative WNT pathways may be active during oogenesis and the oocyte‐to‐embryo transition. Developmental Dynamics 237:1099–1111, 2008. © 2008 Wiley‐Liss, Inc.
Dynamic expression patterns of RhoV/Chp and RhoU/Wrch during chicken embryonic development
Authors: Notarnicola Cécile , Le Guen Ludovic , Fort Philippe , Faure Sandrine , de Santa Barbara Pascal
Published: March 2008

Rho GTPases play central roles in the control of cell adhesion and migration, cell cycle progression, growth, and differentiation. However, although most of our knowledge of Rho GTPase function comes from the study of the three classic Rho GTPases RhoA, Rac1, and Cdc42, recent studies have begun to explore the expression, regulation, and function of some of the lesser‐known members of the Rho GTPase family. In the present study, we cloned the avian orthologues of RhoV (or Chp for Cdc42 homologous protein) and RhoU (or Wrch‐1 for Wnt‐regulated Cdc42 homolog‐1) and examined their expression patterns by in situ hybridization analysis both during early chick embryogenesis and later on, during gastrointestinal tract development. Our data show that both GTPases are detected in the primitive streak, the somites, the neural crest cells, and the gastrointestinal tract with distinct territories and/or temporal expression windows. Although both proteins are 90% identical, our results indicate that cRhoV and cRhoU are distinctly expressed during chicken embryonic development. Developmental Dynamics 237:1165–1171, 2008. © 2008 Wiley‐Liss, Inc.
Identification of genes controlled by LMX1B in the developing mouse limb bud
Authors: Krawchuk Dayana , Kania Artur
Published: March 2008

In the developing limb, dorsal–ventral patterning is controlled by the transcription factor LMX1B, expressed in the dorsal mesenchyme. Loss of Lmx1b function in mice or humans results in the loss of dorsal limb structures and Nail–Patella syndrome, but the effectors through which LMX1B controls limb patterning are virtually unknown. Using microarrays to analyze the differential expression of mRNAs in wild‐type vs. Lmx1b−/− limb buds, we have identified hundreds of genes as putative LMX1B targets. Analysis of a subset of these candidates by in situ mRNA localization has identified eight genes previously unknown to require Lmx1b for their dorsal–ventral restriction of expression in the limb. Furthermore, our results suggest that LMX1B controls different targets along the proximal–distal axis of the limb, and suggest the existence of a dorsal proximal limb region that is rich in mRNAs requiring Lmx1b for their expression. Developmental Dynamics 237:1183–1192, 2008. © 2008 Wiley‐Liss, Inc.
Efficient Preparation of [1‐15N]‐3‐Cyano‐4‐methyl‐1H‐pyrrole by a Wittig‐Based Strategy
Authors: Dawadi Prativa B. S. , Lugtenburg Johan
Published: March 2008

3‐Cyano‐4‐methyl‐1H‐pyrrole (1) was prepared by a new Wittig procedure from simple, commercially available starting materials in four steps with an overall yield of 39 %. Similarly, [1‐15N]‐3‐cyano‐4‐methyl‐1H‐pyrrole (1a) was prepared starting from [15N]‐phthalimide. In this synthesis, Wittig coupling was used to form the central C–C bond of intermediate 6, which has nitrile and methyl substituents. Upon deprotection and cyclization pyrrole 1 is obtained directly in one pot. This scheme also allows stable isotope incorporation at any position or a combination of positions. 3‐Cyano‐4‐methyl‐1H‐pyrrole was converted into the novel 1‐benzyl‐3‐cyano‐4‐methylpyrrole and the novel 4‐methyl‐1H‐pyrrole‐3‐aldehyde. It is clear that this novel Wittig procedure has a wide scope that will allow the easy preparation of many new pyrrole systems.(© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2008)
Simulating hydrostatic and non‐hydrostatic oceanic flows
Authors: Iskandarani M.
Published: March 2008

The thin aspect ratio of oceanic basins is simultaneously a complication to contend with when developing ocean models and an opportunity to simplify the equations of motion. Here we discuss these two aspects of this geometric feature in the context of hydrostatic and non‐hydrostatic ocean models. A simple analysis shows that the horizontal viscous operator in the hydrostatic primitive equations plays a central role in the specification of boundary conditions on the lateral vertical surfaces bounding the domain. The asymptotic analysis shows that for very thin aspect ratios the leading‐order flow cannot be closed unless additional terms in the equations are considered, namely either the horizontal viscous forces or the non‐hydrostatic pressure forces. In either case, narrow boundary layers must be resolved in order to close the circulation properly. The computational cost increases substantially when non‐hydrostatic effects are taken into account. Copyright © 2008 John Wiley & Sons, Ltd.
Insertion of Molecular Oxygen in Transition‐Metal Hydride Bonds, Oxygen‐Bond Activation, and Unimolecular Dissociation of Metal Hydroperoxide Intermediates. Short Communication
Authors: Schlangen Maria , Schwarz Helmut
Published: March 2008

Thermal activation of molecular oxygen is observed for the late‐transition‐metal cationic complexes [M(H)(OH)]+ with M=Fe, Co, and Ni. Most of the reactions proceed via insertion in a metalhydride bond followed by the dissociation of the resulting metal hydroperoxide intermediate(s) upon losses of O, OH, and H2O. As indicated by labeling studies, the processes for the Ni complex are very specific such that the O‐atoms of the neutrals expelled originate almost exclusively from the substrate O2. In comparison to the [M(H)(OH)]+ cations, the ionmolecule reactions of the metal hydride systems [MH]+ (M=Fe, Co, Ni, Pd, and Pt) with dioxygen are rather inefficient, if they occur at all. However, for the solvated complexes [M(H)(H2O)]+ (M=Fe, Co, Ni), the reaction with O2 involving OO bond activation show higher reactivity depending on the transition metal: 60% for the Ni, 16% for the Co, and only 4% for the Fe complex relative to the [Ni(H)(OH)]+/O2 couple.
New Sesquiterpene Formamides from the Marine Sponge Axinyssa sp.
Authors: Lan Wen‐Jian , Wan Hong‐Ping , Li Guo‐Xi , Li Hou‐Jin , Chen Yun‐Yun , Liao Cheng‐Zhu , Cai Ji‐Wen
Published: March 2008

Chemical investigation of an extract of the marine sponge Axinyssa sp., collected from the South China Sea, led to the isolation and identification of two new sesquiterpene formamides, (4R*,5R*,10R*)‐4‐formamidoeudesm‐7‐ene (1) and (4R*,5R*,7S*,10R*)‐4‐formamidoeudesman‐11‐ol (2), together with the known 4α‐formamidogorgon‐11‐ene (3). Their structures were elucidated by spectroscopic methods, including 1D‐ and 2D‐NMR spectroscopy, high‐resolution ESI‐TOF mass spectrometry, as well as X‐ray single‐crystal diffraction experiments. Possible biosynthetic pathways for 1–3 were also proposed. The human nasopharyngeal cancer cell line CNE‐2, human cervical cancer cell line HeLa, and human normal liver cell line L02 were used to examine the cytotoxic activities of 1–3 in vitro. As the results, 1 showed significant cytotoxic activity against CNE‐2, HeLa, and L02 cell lines with the IC50 values of 13.8, 7.5, and 38.0 μg/ml, resp.
Noroleanane Triterpenoids from the Aerial Parts of Lantana camara
Authors: Begum Sabira , Zehra Syeda Qamar , Hassan Syed Imran , Siddiqui Bina S.
Published: March 2008

Two novel triterpenoids, lantadienone (1) and camaradienone (2), were isolated from the aerial parts of Lantana camara, along with seven known compounds, lantadene A, lantadene B, β‐sitosterol 3‐(β‐D‐glucopyranoside), camaric acid, lantanilic acid, lantanolic acid, and camangeloyl acid. Their structures were elucidated as (3β,22β)‐3,25‐epoxy‐3‐hydroxy‐22‐{[(2Z)‐2‐methyl‐1‐oxobut‐2‐enyl]oxy}‐28‐noroleana‐12,17‐dien‐11‐one (1) and (3β)‐3,25‐epoxy‐3‐hydroxy‐28‐noroleana‐12,17‐dien‐11‐one (2), respectively, by means of spectral studies. The triterpenoids 1 and 2 represent 28‐noroleananes oxidized at C(11) and C(22) or at C(11), reported for the first time.