bluuebunny/crossref_metadata_2025_split huggingface dataset:
Varianten bei der Instandsetzung eines Abwasserbauwerks mit Schäden durch Schwefelsäure und neue Verfahren zur Qualitätssicherung
Authors: Taffe Alexander , Pohl Markus , Roeser Wolfgang , Schwamborn Bernd , Schoßmann Alexander 
Published: October 2009

AbstractEine bedarfsgerechte Instandsetzung umfasst nach Zustandsermittlung und Schadensdiagnose die Aufstellung eines Instandsetzungskonzepts sowie eine wirkungsvolle Qualitätssicherung auf der Baustelle. Dadurch wird u. a. deutlich, ob die getroffenen Annahmen z. B. hinsichtlich des erforderlichen Betonabtrags zutreffen. Darüber hinaus wird sichergestellt, dass die Instandsetzung durch das ausführende Unternehmen unter Beachtung aller technischen Erfordernisse ausgeführt wird. Neben klassischen Methoden wie der visuellen Bestandsaufnahme und der Ermittlung der Oberflächenzugfestigkeit wird in diesem Beitrag mit der LIBS‐Technologie (Laser‐induzierte Breakdown Spektroskopie) ein ergänzendes Verfahren zur Qualitätssicherung vorgestellt, für das zwischenzeitlich ein Baustellengerät entwickelt wurde. Die Instandsetzung samt Qualitätssicherung wird am Beispiel eines Schneckenpumpwerks auf der Kläranlage Düren vorgestellt. Sie wurde bereits vor zwei Jahren in diesem Heft hinsichtlich der Schadensdiagnose mit LIBS beschrieben. Die Instandsetzung erfolgte mit vier verschiedenen Instandsetzungssystemen, deren Wirksamkeit zusätzlich durch neu entwickelte Korrosionssensoren dauerhaft überwacht wird. Dadurch sollen messtechnisch belegte Erfahrungen zur Eignung bzw. zu den Einsatzgrenzen verschiedener Instandsetzungssysteme bei näherungsweise identischer Beanspruchung gewonnen werden. Darüber hinaus wurde aus Betreibersicht ein Instandhaltungskonzept erarbeitet, das Planung, Inspektion, Untersuchung und Schadensdiagnose zurAufstellung bedarfsgerechter Instandsetzungskonzepte zusammen mit Qualitätssicherung bei der Ausführung berücksichtigt.
A virtual platform to teach separation processes
Authors: Granjo J. F. , Rasteiro M. G. , Gando‐Ferreira L. M. , Bernardo F. P. , Carvalho M. G. , Ferreira A. G. 
Published: October 2009

AbstractIn this article the Unit Operations and Separation Processes area of a virtual platform called LABVIRTUAL(http://labvirtual.eq.uc.pt) is presented aiming to support the autonomous study of undergraduate students engaged in a Chemical Engineering degree, especially in Portuguese‐speaking countries. The main features, subjects, computational applications, and examples in the platform are described, as well as a first assessment by the students. © 2009 Wiley Periodicals, Inc. Comput Appl Eng Educ 20: 175–186, 2012
Novel Process Windows – Gate to Maximizing Process Intensification via Flow Chemistry
Authors: Hessel V. 
Published: October 2009

AbstractDriven by the economics of scale, the size of reaction vessels as the major processing apparatus of the chemical industry has became bigger and bigger [1, 2]. Consequently, the efforts for ensuring mixing and heat transfer have also increased, as these are scale dependent. This has brought vessel operation to (partly severe) technical limits, especially when controlling harsh conditions, e.g., due to large heat releases. Accordingly, processing at a very large scale has resulted in taming of the chemistry involved in order to slow it down to a technically controllable level. Therefore, reaction paths that already turned out too aggressive at the laboratory scale are automatically excluded for later scale‐up, which constitutes a common everyday confinement in exploiting chemical transformations. Organic chemists are barely conscious that even the small‐scale laboratory protocols in their textbooks contain many slow, disciplined chemical reactions. Operations such as adding a reactant drop by drop in a large diluted solvent volume have become second nature, but are not intrinsic to the good engineering of chemical reactions. These are intrinsic to the chemical apparatus used in the past. In contrast, today's process intensification [3–12] and the new flow‐chemistry reactors on the micro‐ and milli‐scale [13–39] allow such limitations to be overcome, and thus, enable a complete, ab‐initio type rethinking of the processes themselves. In this way, space‐time yields and the productivity of the reactor can be increased by orders of magnitude and other dramatic performance step changes can be achieved. A hand‐in‐hand design of the reactors and process re‐thinking is required to enable chemistry rather than subduing chemistry around the reactor [40]. This often leads to making use of process conditions far from conventional practice, under harsh environments, a procedure named here as Novel Process Windows.
The Effect of Backbone Stereochemistry on the Folding of Acyclic β2, 3‐Aminoxy Peptides
Authors: Zhang Yu‐Hui , Song Kesheng , Zhu Nian‐Yong , Yang Dan 
Published: October 2009

AbstractAs a new type of foldamer, β‐aminoxy peptides have the ability to adopt novel β NO turns or β NO helices in solution. Herein, we describe a new subclass of β‐aminoxy peptide, that is, peptides of acyclic β2, 3‐aminoxy acids (NH2OCHR1CHR2COOH), in which the presence of two chiral centers provides insight into the effect of backbone stereochemistry on the folding of β‐aminoxy peptides. Acyclic β2, 3‐aminoxy peptides with syn and anti configurations have been synthesized and their conformations investigated by NMR, IR, and circular dichroism (CD) spectroscopic, and X‐ray crystallographic analysis. The β NO turns or β NO helices, which feature nine‐membered rings with intramolecular hydrogen bonds and have been identified previously in peptides of β3‐ and β2, 2‐aminoxy acids, are also predominantly present in the acyclic β2, 3‐aminoxy peptides with a syn configuration and NO bonds gauche to the CαCβ bonds in both solution and the solid state. In the acyclic β2, 3‐aminoxy peptides with an anti configuration, an extended strand (i.e., non‐hydrogen‐bonded state) is found in the solid state, and several conformations including non‐hydrogen‐bonded and intramolecular hydrogen‐bonded states are present simultaneously in nonpolar solvents. These results suggest that the backbone stereochemistry does affect the folding of the acyclic β2, 3‐aminoxy peptides. Theoretical calculations on the conformations of model acyclic β2, 3‐aminoxy peptides with different backbone stereochemistry were also conducted to elucidate structural characteristics. Our present work may provide useful guidelines for the design and construction of new foldamers with predicable structures.
Melamine–Melem Adduct Phases: Investigating the Thermal Condensation of Melamine
Authors: Sattler Andreas , Pagano Sandro , Zeuner Martin , Zurawski Alexander , Gunzelmann Daniel , Senker Jürgen , Müller‐Buschbaum Klaus , Schnick Wolfgang 
Published: October 2009

AbstractBy studying the thermal condensation of melamine, we have identified three solid molecular adducts consisting of melamine C3N3(NH2)3 and melem C6N7(NH2)3 in differing molar ratios. We solved the crystal structure of 2 C3N3(NH2)3⋅C6N7(NH2)3 (1; C2/c; a=21.526(4), b=12.595(3), c=6.8483(14) Å; β=94.80(3)°; Z=4; V=1850.2(7) Å3), C3N3(NH2)3⋅C6N7(NH2)3 (2; Pcca; a=7.3280(2), b=7.4842(2), c=24.9167(8) Å; Z=4; V=1366.54(7) Å3), and C3N3(NH2)3⋅3 C6N7(NH2)3 (3; C2/c; a=14.370(3), b=25.809(5), c=8.1560(16) Å; β=94.62(3)°; Z=4; V=3015.0(10) Å3) by using single‐crystal XRD. All syntheses were carried out in sealed glass ampoules starting from melamine. By variation of the reaction conditions in terms of temperature, pressure, and the presence of ammonia‐binding metals (europium) we gained a detailed insight into the occurrence of the three adduct phases during the thermal condensation process of melamine leading to melem. A rational bulk synthesis allowed us to realize adduct phases as well as phase separation into melamine and melem under equilibrium conditions. A solid‐state NMR spectroscopic investigation of adduct 1 was conducted.
Stabilization of G‐Quadruplex DNA with Platinum(II) Schiff Base Complexes: Luminescent Probe and Down‐Regulation of c‐myc Oncogene Expression
Authors: Wu Peng , Ma Dik‐Lung , Leung Chung‐Hang , Yan Siu‐Cheong , Zhu Nianyong , Abagyan R. , Che Chi‐Ming 
Published: October 2009

AbstractThe interactions of a series of platinum(II) Schiff base complexes with c‐myc G‐quadruplex DNA were studied. Complex [PtL1a] (1 a; H2L1a=N,N′‐bis(salicylidene)‐4,5‐methoxy‐1,2‐phenylenediamine) can moderately inhibit c‐myc gene promoter activity in a cell‐free system through stabilizing the G‐quadruplex structure and can inhibit c‐myc oncogene expression in cultured cells. The interaction between 1 a and G‐quadruplex DNA has been examined by 1H NMR spectroscopy. By using computer‐aided structure‐based drug design for hit‐to‐lead optimization, an in silico G‐quadruplex DNA model has been constructed for docking‐based virtual screening to develop new platinum(II) Schiff base complexes with improved inhibitory activities. Complex [PtL3] (3; H2L3=N,N′‐bis{4‐[1‐(2‐propylpiperidine)oxy]salicylidene}‐4,5‐methoxy‐1,2‐phenylenediamine) has been identified with a top score in the virtual screening. This complex was subsequently prepared and experimentally tested in vitro for its ability to stabilize or induce the formation of the c‐myc G‐quadruplex. The inhibitory activity of 3 (IC50=4.4 μM) is tenfold more than that of 1 a. The interaction between 1 a or 3 with c‐myc G‐quadruplex DNA has been examined by absorption titration, emission titration, molecular modeling, and NMR titration experiments, thus revealing that both 1 a and 3 bind c‐myc G‐quadruplex DNA through an external end‐stacking mode at the 3’ terminal face of the G‐quadruplex. Such binding of G‐quadruplex DNA with 3 is accompanied by up to an eightfold increase in the intensity of photoluminescence at λmax=652 nm. Complex 3 also effectively down‐regulated the expression of c‐myc in human hepatocarcinoma cells.
ChemInform Abstract: Ge Pairs and Sb Ribbons in Rare‐Earth Germanium Antimonides Ln12Ge7‐xSb21 (Ln: La—Pr).
Authors: Bie Haiying , Mar Arthur 
Published: October 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Uranium(VI) Adopts a Tetraoxido Core
Authors: Wu Shijun , Ling Jie , Wang Shuao , Skanthakumar S. , Soderholm L. , Albrecht‐Schmitt Thomas E. , Alekseev Evgeny V. , Krivovichev Sergey V. , Depmeier Wulf 
Published: October 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Three‐Dimensional Nickel(II) Heptacyanomolybdate(III)‐Based Magnet.
Authors: Tomono Keisuke , Tsunobuchi Yoshihide , Nakabayashi Koji , Kosaka Wataru , Matsuda Tomoyuki , Ohkoshi Shin‐ichi 
Published: October 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Chiral Lewis Base Promoted Trichlorosilane Reduction of Ketimines. An Enantioselective Organocatalytic Synthesis of Chiral Amines.
Authors: Guizetti Stefania , Benaglia Maurizio , Cozzi Franco , Annunziata Rita 
Published: October 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Baeyer—Villiger Oxidation of Ketones with a Silica‐Supported Peracid in Supercritical Carbon Dioxide under Flow Conditions.
Authors: Mello Rossella , Olmos Andrea , Parra‐Carbonell Javier , Gonzalez‐Nunez Maria Elena , Asensio Gregorio 
Published: October 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: A Dream Combination for Catalysis: Highly Reactive and Recyclable Scandium(III) Triflate‐Catalyzed Cyanosilylations of Carbonyl Compounds in an Ionic Liquid.
Authors: Park Boyoung Y. , Ryu Ka Yeon , Park Jung Hwan , Lee Sang‐gi 
Published: October 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: The Ruthenium‐Catalyzed Hydrovinylation of Internal Alkynes by Acrylates: An Atom Economic Approach to Highly Substituted 1,3‐Dienes.
Authors: Neisius N. Matthias , Plietker Bernd 
Published: October 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Highly Efficient N‐Monomethylation of Primary Aryl Amines.
Authors: Peng Yiyuan , Liu Hanliang , Tang Min , Cai Lisheng , Pike Victor 
Published: October 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Microwave‐Enhanced and Ligand‐Free Copper‐Catalyzed Cyanation of Aryl Halides with K4[Fe(CN)6] in Water.
Authors: Ren Yunlai , Wang Wei , Zhao Shuang , Tian Xinzhe , Wang Jianji , Yin Weiping , Cheng Lin 
Published: October 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: A Concise and Efficient Way to Synthesize Polyenic Diones Directly from α,β‐Unsaturated Methyl Ketones.
Authors: Gao Meng , Yin Guodong , Wang Zihua , Wu Yandong , Guo Cheng , Pan Yuanjiang , Wu Anxin 
Published: October 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Metal‐Free, Retro‐Cycloaddition of Fulleropyrrolidines in Ionic Liquids under Microwave Irradiation.
Authors: Guryanov Ivan , Lopez Alejandro Montellano , Carraro Mauro , Da Ros Tatiana , Scorrano Gianfranco , Maggini Michele , Prato Maurizio , Bonchio Marcella 
Published: October 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Cyclization at Very High Temperature. Thermal Transformations of N‐Alkyl and N,N‐Dialkyl Amide of α,β‐Unsaturated Acids into Mono‐ and Bicyclic Heterocycles under FVT Conditions.
Authors: Lesniak Stanislaw , Nazarski Ryszard B. , Pasternak Beata 
Published: October 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Tetrahydrocarbazole Amides with Potent Activity Against Human Papillomaviruses.
Authors: Gudmundsson Kristjan S. , et al. et al. 
Published: October 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Propellane as a Conformational Device for the Stabilization of the β‐Lactone of Salinosporamide A.
Authors: Vamos Mitchell , Kobayashi Yoshihisa 
Published: October 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: One‐Step Synthesis of the Benzocyclo[penta‐ to octa‐]isoindole Core.
Authors: Hu Yimin , Yu Chenli , Ren Dong , Hu Qiong , Zhang Lidong , Cheng Dong 
Published: October 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: A Mild and Convenient Synthesis of 4‐Tosyl‐4,5‐dihydrooxazoles
Authors: Companyo Xavier , Moyano Albert , Rios Ramon 
Published: October 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Synthesis and Pharmacological Studies of Some Phthalimidoxy Substituted Spiro‐thiazolidinone Derivatives of Isatin.
Authors: Bhambi Dinesh , Sharma Chirag , Sharma Shweta , Salvi Vijay Kumar , Talesara G. L. 
Published: October 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Synthesis and Antimicrobial Studies of 4‐Oxo‐thiazolidine Derivatives.
Authors: Patel Hitesh D. , Mistry B. D. , Desai K. R. 
Published: October 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Sodium Borohydride Reduction of E‐3‐Cinnamylideneflavanone in Alcohols: Formation of Structurally Interesting Alkoxydienes.
Authors: Chattopadhyay Falguni , Mallik Asok K. 
Published: October 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Synthesis of 7‐ (or 6‐)Hydroxy Derivatives of 3,3‐Dimethyl‐3,4‐dihydroisoquinoline.
Authors: Shklyaev Yu. V. , Vshivkova T. S. , Tolstikov A. G. 
Published: October 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Design, Synthesis and Evaluation of Tetrahydroisoquinolines as New Kinesin Spindle Protein Inhibitors.
Authors: Jiang Cheng , You Qidong , Liu Fei , Wu Wutong , Guo Qinglong , Chern Jiwang , Yang Lei , Chen Mengling 
Published: October 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Fluorine‐Containing 1,10‐Phenanthrolines Synthesis: An Original and Efficient Approach by the Pyridine‐Ring Formation Reaction of N‐Propargyl‐5,7‐bis‐(trifluoroacetyl)‐8‐quinolylamine with Various Nucleophiles.
Authors: Shibata Dai , Okada Etsuji , Miyaoku Takayuki , Molette Jerome , Medebielle Maurice 
Published: October 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Synthesis and Oxidation of 2‐Furyl‐4‐R‐substituted and Furo[3,2‐c]‐condensed 1,2,3,4‐Tetrahydro‐1,10‐phenanthrolines and Quinolines.
Authors: Zaitsev V. P. , Mikhailova N. M. , Orlova D. N. , Nikitina E. V. , Boltukhina E. V. , Zubkov F. I. 
Published: October 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Reactions of 4‐Unsubstituted 4,5‐Dihydro‐1H‐indeno[1,2‐b]pyridines.
Authors: Tanaev D. , Lusis V. , Muceniece D. 
Published: October 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Microwave‐Assisted Synthesis of 2,3,4‐Trisubstituted 1,2‐Dihydropyrimido[1,2‐a]benzimidazole.
Authors: Deshmukh M. B. , Suryavanshi A. W. , Jagtap S. S. , Deshmukh S. A. 
Published: October 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Synthesis and Characterization of Fused and Spiro Heterocycles by Ultrasonic Methods.
Authors: Dabholkar Vijay V. , Wadkar Mihir M. 
Published: October 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.