bluuebunny/crossref_metadata_2025_split huggingface dataset:
ChemInform Abstract: Helical Tubuland Diols: A Synthetic and Crystal Engineering Quest
Authors: Bishop Roger 
Published: April 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: Structural Perspective on Enzymatic Halogenation
Authors: Blasiak Leah C. , Drennan Catherine L. 
Published: April 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: Formation and Functioning of Electroactive Coatings Based on Fullerenes and Their Derivatives. The Role of Non‐Covalent Interactions
Authors: Goldshleger N. F. , Shestakov A. F. , Ovsyannikova E. V. , Alpatova N. M. 
Published: April 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: Formation and Reactivity of Phosphorus—Selenium Rings
Authors: Hua Guoxiong , Woollins J. Derek 
Published: April 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: Boswellic Acids: A Group of Medicinally Important Compounds
Authors: Shah Bhahwal Ali , Qazi Ghulam Nabi , Taneja Subhash Chandra 
Published: April 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: Inspirations, Discoveries, and Future Perspectives in Total Synthesis
Authors: Nicolaou K. C. 
Published: April 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: Development and Application of Glycosylated Particulate Carriers for Delivery of Nucleic Acid Medicine
Authors: Kawakami Shigeru 
Published: April 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: Development of a Replication‐Incompetent Adenovirus Vector Derived from Subgroup B Adenovirus Serotype 35
Authors: Sakurai Fuminori 
Published: April 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: Kinetics of Formation of Hyperbranched Polymers
Authors: Irzhak V. I. 
Published: April 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 Role for Water Molecules in DNA—Ligand Minor Groove Recognition
Authors: Nguyen Binh , Neidle Stephen , Wilson W. David 
Published: April 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: Chemosensors for Pyrophosphate
Authors: Kim Sook Kyung , Lee Dong Hoon , Hong Jong‐In , Yoon Juyoung 
Published: April 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: Keeping Uracil Out of DNA: Physiological Role, Structure and Catalytic Mechanism of dUTPases
Authors: Vertessy Beata G. , Toth Judit 
Published: April 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: Repair of 8‐Oxoguanine in DNA. The Mechanisms of Enzymatic Catalysis
Authors: Rogacheva M. V. , Kuznetsova S. A. 
Published: April 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: Molecules Derived from the Extremes of Life
Authors: Wilson Zoe E. , Brimble Margaret A. 
Published: April 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: Biosynthesis of Polyketide Synthase Extender Units
Authors: Chan Yolande A. , Podevels Angela M. , Kevany Brian M. , Thomas Michael G. 
Published: April 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: Unusually Cyclized Triterpenes: Occurrence, Biosynthesis and Chemical Synthesis
Authors: Domingo Victoriano , Arteaga Jesus F. , Quilez del Moral Jose F. , Barrero Alejandro F. 
Published: April 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: Intracellular Survival and Replication of Legionella pneumophila Within Host Cells
Authors: Miyake Masaki 
Published: April 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: Applied Chemistry of Natural DNA
Authors: Liu XiangDong , Diao HongYan , Nishi Norio 
Published: April 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: Electrocatalytic and Homogeneous Approaches to Conversion of CO2 to Liquid Fuels
Authors: Benson Eric E. , Kubiak Clifford P. , Sathrum Aaron J. , Smieja Jonathan M. 
Published: April 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: Seeking “Etwas Neues” — From Bioorganic Chemistry to Alzheimer′s Disease
Authors: Nakayama Hitoshi 
Published: April 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: In silico Drug Discovery Based on the Integration of Bioinformatics and Chemoinformatics
Authors: Okuno Yasushi 
Published: April 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: New Nanoforms of Carbon and Boron Nitride
Authors: Pokropivny V. V. , Ivanovskii A. L. 
Published: April 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: Computational Design of Biological Catalysts
Authors: Marti Sergio , Andres Juan , Moliner Vicent , Silla Estanislao , Tunon Inaki , Bertran Juan 
Published: April 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: Study on the Structure and Vibrational Dynamics of Functional Molecules and Molecular Clusters by Double Resonance Vibrational Spectroscopy
Authors: Ebata Takayuki 
Published: April 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 HPLC for Efficient Resolution of Enantiomers
Authors: Okamoto Yoshio , Ikai Tomoyuki 
Published: April 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.
Recent Advances in the Study of the Bioactive Conformation of Taxol
Authors: Sun Liang , Simmerling Carlos , Ojima Iwao 
Published: April 2009

AbstractDemystifying Taxol: The structurally complex natural product paclitaxel is among the most important antitumor drugs presently in the clinic. While the mechanism of action is known, the biologically active conformation has been much debated. Herein we summarize the considerable research efforts that have gone into elucidating the bioactive conformation of paclitaxel.magnified imagePaclitaxel is one of the most important chemotherapeutic drugs in the fight against cancer. This minireview covers the recent advances in the study of the bioactive conformation of paclitaxel in tubulin/microtubules. The tubulin‐bound structure of paclitaxel has been studied by means of photoaffinity labeling, cryo‐electron microscopy, solid‐state NMR, molecular modeling, MD simulations and the synthesis of conformationally restrained analogues and paclitaxel mimics. The bioactive conformation of paclitaxel is important since it could provide critical information that would allow the design of novel analogues with simpler structures and/or increased potency against cancer.
Tensor products and correlation estimates with applications to nonlinear Schrödinger equations
Authors: Colliander James , Tzirakis Nikolaos , Grillakis Manoussos G. 
Published: April 2009

AbstractWe prove new interaction Morawetz‐type (correlation) estimates in one and two dimensions. In dimension 2 the estimate corresponds to the nonlinear diagonal analogue of Bourgain's bilinear refinement of Strichartz. For the two‐dimensional case we provide a proof in two different ways. First, we follow the original approach of Lin and Strauss but applied to tensor products of solutions. We then demonstrate the proof using commutator vector operators acting on the conservation laws of the equation. This method can be generalized to obtain correlation estimates in all dimensions. In one dimension we use the Gauss‐Weierstrass summability method acting on the conservation laws. We then apply the two‐dimensional estimate to nonlinear Schrödinger equations and derive a direct proof of Nakanishi's H1 scattering result for every L2‐supercritical nonlinearity. We also prove scattering below the energy space for a certain class of L2‐supercritical equations. © 2009 Wiley Periodicals, Inc.
Optical Spectroscopic Methods for Probing the Conformational Stability of Immobilised Enzymes
Authors: Ganesan Ashok , Moore Barry D. , Kelly Sharon M. , Price Nicholas C. , Rolinski Olaf J. , Birch David J. S. , Dunkin Ian R. , Halling Peter J. 
Published: April 2009

AbstractStructure of immobilised enzymes: Circular dichroism, infrared and fluorescence spectroscopic methods are used to characterise in situ structural stability of enzymes immobilised on particles. The enzyme subtilisin Carlsberg exhibits a similar secondary structure in solution and in the immobilised state but on the surface of porous silica gel a rigid tertiary structure is preferred (see picture).magnified imageWe report the development of biophysical techniques based on circular dichroism (CD), diffuse reflectance infrared Fourier transform (DRIFT) and tryptophan (Trp) fluorescence to investigate in situ the structure of enzymes immobilised on solid particles. Their applicability is demonstrated using subtilisin Carlsberg (SC) immobilised on silica gel and Candida antartica lipase B immobilised on Lewatit VP.OC 1600 (Novozyme 435). SC shows nearly identical secondary structure in solution and in the immobilised state as evident from far UV CD spectra and amide I vibration bands. Increased near UV CD intensity and reduced Trp fluorescence suggest a more rigid tertiary structure on the silica surface. After immobilised SC is inactivated, these techniques reveal: a) almost complete loss of near UV CD signal, suggesting loss of tertiary structure; b) a shift in the amide I vibrational band from 1658 cm−1 to 1632 cm−1, indicating a shift from α‐helical structure to β‐sheet; c) a substantial blue shift and reduced dichroism in the far UV CD, supporting a shift to β‐sheet structure; d) strong increase in Trp fluorescence intensity, which reflects reduced intramolecular quenching with loss of tertiary structure; and e) major change in fluorescence lifetime distribution, confirming a substantial change in Trp environment. DRIFT measurements suggest that pressing KBr discs may perturb protein structure. With the enzyme on organic polymer it was possible to obtain near UV CD spectra free of interference by the carrier material. However, far UV CD, DRIFT and fluorescence measurements showed strong signals from the organic support. In conclusion, the spectroscopic methods described here provide structural information hitherto inaccessible, with their applicability limited by interference from, rather than the particulate nature of, the support material.
Redox Properties of Mixed Lutetium/Yttrium Nitride Clusterfullerenes: Endohedral LuxY3−xN@C80(I) (x=0–3) Compounds
Authors: Tarábek Ján , Yang Shangfeng , Dunsch Lothar 
Published: April 2009

AbstractThe complex redox behavior of mixed lutetium/yttrium nitride clusterfullerenes of the series LuxY3−xN§C80(Ih, x=0–3) (see figure) results in up to three irreversible reduction steps. A reduction mechanism is proposed based on fast‐scan and square‐wave voltammetry experiments combined with simulations of the voltammograms.magnified imageThe redox behavior of mixed lutetium/yttrium nitride clusterfullerenes of the series LuxY3−xN@C80(Ih, x=0–3) is studied for the first time by means of cyclic voltammetry, fast‐scan cyclic voltammetry, square‐wave voltammetry, and electron paramagnetic resonance (EPR) spectroelectrochemistry. A reversible single‐electron‐transfer process, which does not result in an EPR signal, is detected during the anodic oxidation sweep of cyclic voltammetry experiments performed at different temperatures (296 and 360 K). The cathodic reduction sweep reveals a rather complex response for all the four clusterfullerenes—with up to three irreversible reduction steps. By correlating the results of fast‐scan and square‐wave voltammetry and combining them with simulations of the voltammograms, we are able to propose a reduction mechanism for the LuxY3−xN@C80(I) (x=0–3) fullerenes.
Microhardness studies on as‐grown (111) faces of some alkaline earth nitrates
Authors: Shekar P. V. Raja , Nagaraju D. , Ganesh V. , Rao K. Kishan 
Published: April 2009

AbstractSingle crystals of Sr(NO3)2, Ba(NO3)2 and Pb(NO3)2 are grown from their aqueous solutions at a constant temperature of 35 °C by slow evaporation technique. Crystals of size 8 to 10 mm along one edge are obtained in a period of 10 days. Chemical etching technique has been employed to study the dislocations in these crystals. The dislocations are randomly distributed and the dislocation density is about 104 to 105 /cm2. Microhardness studies are made on as–grown (111) faces of these crystals upto a load of 100 g. The hardness of the crystals increases with an increase in load and thereafter it becomes independent of the applied load. These results are discussed on the basis of reverse indentation size effect. Meyer index number n for these crystals is estimated at both low and high load regions. An analysis of hardness data of these crystals as well as some other cubic crystals like alums and alkali halates are discussed using Gilman–Chin parameter Hv/C44, where Hv is the microhardness and C44 is the shear constant. (© 2009 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
Catalytic Processing of Lactic Acid over Pt/Nb2O5
Authors: Serrano‐Ruiz Juan Carlos , Dumesic James A. 
Published: April 2009

AbstractAqueous solutions of lactic acid derived from biomass can be catalytically upgraded over Pt(0.1 %)/Nb2O5 into an organic phase rich in C4–C7 ketones that spontaneously separates from water. The single‐reactor process retains 50 % of the feed carbon in the organic layer. The niobia support catalyzes CC coupling reactions and plays a key role in directing the synthesis towards these valuable products.magnified imageDilute aqueous solutions of lactic acid (30 %wt.) can be catalytically processed at 573 K and 57 bar over a low‐metal‐content Pt(0.1 %)/Nb2O5 catalyst in a spontaneously separating organic phase rich in valuable products such as C4–C7 ketones. An increase in the lactic acid concentration to 60 wt % allows conversion of approximately 50 % of the carbon feed in this organic layer, while maintaining good stability of the catalyst. Experiments at low conversion showed that lactic acid reacts first over Pt(0.1 %)/Nb2O5 to produce acetaldehyde and propanoic acid (along with CO and CO2 in the gas phase). These compounds (less oxygenated than lactic acid but still reactive) are the key intermediates in the overall process, and they react differently depending on the nature of the catalyst support. In particular, reaction kinetics studies with propanoic acid as feed showed that Pt(0.1 %)/Nb2O5 favored the formation of pentanones by ketonization reactions, whereas a monofunctional Pt(0.1 %)/carbon catalyst produced ethane and COx by decomposition reactions. In the same manner, acetaldehyde was preferentially hydrogenated to ethanol over Pt(0.1 %)/carbon, whereas the presence of niobia allowed this intermediate to react (by successive aldol condensations) to form C4–C7 condensation products stored in the organic phase. Finally, reaction pathways are proposed to explain the catalytic processing of lactic acid over bifunctional Pt(0.1 %)/Nb2O5. In this scheme, metal sites catalyze hydrogenation reactions and niobia promotes CC coupling processes (ketonization and aldol condensation), in contrast to CC cleavage reactions which take place preferentially over Pt(0.1 %)/carbon and lead to loss of carbon in the gas effluent as CO, CO2, and methane.
Developmental shifts in gene expression in the auditory forebrain during the sensitive period for song learning
Authors: London Sarah E. , Dong Shu , Replogle Kirstin , Clayton David F. 
Published: April 2009

AbstractA male zebra finch begins to learn to sing by memorizing a tutor's song during a sensitive period in juvenile development. Tutor song memorization requires molecular signaling within the auditory forebrain. Using microarray and in situ hybridizations, we tested whether the auditory forebrain at an age just before tutoring expresses a different set of genes compared with later life after song learning has ceased. Microarray analysis revealed differences in expression of thousands of genes in the male auditory forebrain at posthatch day 20 (P20) compared with adulthood. Furthermore, song playbacks had essentially no impact on gene expression in P20 auditory forebrain, but altered expression of hundreds of genes in adults. Most genes that were song‐responsive in adults were expressed at constitutively high levels at P20. Using in situ hybridization with a representative sample of 44 probes, we confirmed these effects and found that birds at P20 and P45 were similar in their gene expression patterns. Additionally, eight of the probes showed male–female differences in expression. We conclude that the developing auditory forebrain is in a very different molecular state from the adult, despite its relatively mature gross morphology and electrophysiological responsiveness to song stimuli. Developmental gene expression changes may contribute to fine‐tuning of cellular and molecular properties necessary for song learning. © 2009 Wiley Periodicals, Inc. Develop Neurobiol 2009