bluuebunny/crossref_metadata_2025_split huggingface dataset:
ChemInform Abstract: First Synthesis of Racemic Concentricolide, an anti‐HIV‐1 Agent Isolated from the Fungus Daldinia concentrica.
Authors: Fang Li‐Zhen , Liu Ji‐Kai 
Published: December 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: Ulmosides A and B: Flavonoid 6‐C‐Glycosides from Ulmus wallichiana, Stimulating Osteoblast Differentiation Assessed by Alkaline Phosphatase.
Authors: Rawat Preeti , Kumar Manmeet Kumar Manmeet , Sharan Kunal , Chattopadhyay Naibedya , Maurya Rakesh 
Published: December 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: Actinide Geochemistry: From the Molecular Level to the Real System
Authors: Geckeis Horst , Rabung Thomas 
Published: December 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: Thermodynamic Modeling of the Cr—Hf—Si System
Authors: Yang Y. , Schoonover J. , Bewlay B. P. , Lewis D. , Chang Y. A. 
Published: December 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: Catalytic C—H Amination: Recent Progress and Future Directions
Authors: Collet Florence , Dodd Robert H. , Dauban Philippe 
Published: December 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: Samarium Diiodide Mediated Reactions in Total Synthesis
Authors: Nicolaou K. C. , Ellery Shelby P. , Chen Jason S. 
Published: December 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: Oxidative Coupling Reactions with Gold
Authors: Wegner Hermann A. 
Published: December 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: Recent Developments in Aminopyrazole Chemistry
Authors: Anwar Hany Fakhry , Elnagdi Mohamed Hilmy 
Published: December 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: Isoxazolines from Nitro Compounds: Synthesis and Applications
Authors: Namboothiri Irishi N. N. , Rastogi Namrata 
Published: December 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: Total Synthesis of Polyyne Natural Products
Authors: Gung Benjamin W. 
Published: December 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: Verticillane Derivatives from Natural Sources
Authors: Wang Yu‐Fang , Su Xiao‐Hui , Li Li‐Geng , Wang Wei , Zhang Man‐Li , Huo Chang‐Hong , Shi Qing‐Wen 
Published: December 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: Develping Continuous‐Flow Microreactors as Tools for Synthetic Chemists
Authors: Geyer Karolin , Gustafsson Tomas , Seeberger Peter H. 
Published: December 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: Critical Factors in Chemical Characterization for the Evaluation of Decontamination in Solids Using Advanced Oxidation
Authors: Kubatova Alena 
Published: December 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: Photoreactions and Dynamics of the Green Fluorescent Protein
Authors: van Thor Jasper J. 
Published: December 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.
Subvalenz bei elektropositiven s‐Block‐Metallen. Unmögliches möglich gemacht
Authors: Krieck Sven , Westerhausen Matthias 
Published: December 2009

AbstractDie Darstellung von niederwertigen elektropositiven Metallverbindungen kann mit Hilfe der drei folgenden Konzepte gelingen: i) Durch die Aufnahme delokalisierter Elektronen können metallische Matrices stabilisierend wirken. Aus der Summenformel leitet sich eine formale Subvalenz ab; unter Berücksichtigung der Bindungsverhältnisse ergibt sich jedoch eine Normalvalenz. ii) Durch die Ausbildung homonuclearer Element‐Element‐Bindungen oder von Metallclustern sind diese Verbindungen nach den Regeln zur Bestimmung der Oxidationsstufe formal niederwertig. Gegebenenfalls liegt aber Normvalenz bei Verbindungen mit M22+‐Einheiten vor (was aus der Chemie des Quecksilbers als Hg22+ wie beispielsweise im Kalomel Hg2Cl2 schon lange bekannt ist). iii) Ausgedehnte π*‐Systeme von Arenen mit einer geeigneten Energie zwischen den beiden ersten Ionisierungspotenzialen des Erdalkalimetalls nehmen nur eines der beiden Valenzelektronen auf.
Sekt, Champagner & Co. So prickelnd kann Chemie sein
Authors: Roth Klaus 
Published: December 2009

AbstractEin Glas Sekt oder Champagner ist das bevorzugte Getränk für die außergewöhnlichen Momente in unserem Leben. Der Kenner zelebriert das Öffnen der Flasche und erfreut sich beim sorgfältigen Eingießen in das richtige Glas, an der Farbe, dem Aroma, dem Geschmack und vor allem an den aufsteigenden Gasbläschen. Betrachtet man den Sekt im Glas versonnen und nachdenklich, erfasst man, dass auf dem Wege von Weinberg bis ins Glas eine Menge Chemie nötig war, wodurch unsere Freude am Genuss noch erhöht wird. Was für ein wunderbarer Start ins Neue Jahr! A votre santé!
Phoenix auf dem Eis – oder wie man in 200 Millionen Kilometer Entfernung ein nasschemisches Labor betreibt
Authors: Harrer Roswitha 
Published: December 2009

AbstractIm Mai 2008 landete die amerikanische Raumsonde Phoenix in der Nordpolarregion des Mars, um Bodenproben chemisch und physikochemisch zu untersuchen. Neben Wasser tauchte unerwartet ein besonderes Molekül in den Analysen auf.
Maturation of canal‐related brainstem neurons in the detection of horizontal angular acceleration in rats
Authors: Lai Chun‐Hong , Yiu Christina N.S. , Lai Suk‐King , Ng Ka‐Pak , Yung Ken K.L. , Shum Daisy K.Y. , Chan Ying‐Shing 
Published: December 2009

AbstractWe examined the functional maturation of canal‐related brainstem neurons in Sprague‐Dawley rats at postnatal day (P)1 to adult. Conscious animals were subjected to cycles of angular acceleration and deceleration so as to selectively activate hair cells of the horizontal semicircular canals. Brainstem neurons were monitored for c‐fos expression by immuno‐hybridization histochemistry as an indicator of neuronal activation. Fos‐immunoreactive canal‐related neurons were identifiable from P4 onwards in the vestibular nucleus and downstream vestibular relay stations, prepositus hypoglossal nucleus, and inferior olive. In the vestibular nucleus and prepositus hypoglossal nucleus, the number of canal‐related neurons increased progressively with age, reaching the adult level by P21. Those in the inferior olive increased in number from P4 to P14 but decreased significantly afterwards until adulthood. The topography was not clear in the vestibular nucleus and prepositus hypoglossal nucleus. Canal‐related neurons in P4–7 rats were spread throughout the rostrocaudal length of each subnucleus but clusters of canal‐related neurons tended to form within specific subnuclei by P21. These were concentrated in the caudal halves of medial and spinal vestibular nuclei and the rostral parts of superior vestibular nucleus and prepositus hypoglossal nucleus. In the inferior olive, the topography was evident early in the course of development. Canal‐related neurons were exclusively located in four subnuclei: dorsal medial cell column, dorsal cap, subnucleus A, and subnucleus C, but not in other subnuclei. Taken together, our data revealed the developmental profile of neuronal subpopulations within the horizontal canal system, thus providing an internal neural representation for postnatal coding of horizontal head rotations in spatial perception. J. Comp. Neurol. 518:1742–1763, 2010. © 2009 Wiley‐Liss, Inc.
Analysis of emergent fault element behavior in Virtual California
Authors: Glasscoe Margaret T. , Granat Robert A. , Rundle John B. , Rundle Paul B. , Donnellan Andrea , Kellogg Louise H. 
Published: December 2009

AbstractThe Virtual California simulation tool can be used to study fault and stress interaction scenarios for realistic California earthquakes and produces a large data set, which is ideally suited for statistical analysis. As with any complex system, it can produce emergent phenomena unexpected by its designers; these can be studied in order to gain insight into real world geophysical phenomena. We have developed a statistical method to analyze Virtual California data that enables us to determine the correlation relationships between the simulated fault elements. We present the results of this analysis of 40 000 years of data for 59 faults (639 elements). We focus on five specific cases that display noteworthy behavior that includes long‐range fault interactions, activation–quiescence, and complex small‐scale interactions. Copyright © 2009 John Wiley & Sons, Ltd.
Mechanism of Charging of Au Atoms and Nanoclusters on Li Doped SiO2/Mo(112) Films
Authors: Martinez Umberto , Giordano Livia , Pacchioni Gianfranco 
Published: December 2009

AbstractWe present the results of supercell DFT calculations on the adsorption properties of Au atoms and small clusters (Aun, n≤5) on a SiO2/Mo(112) thin film and on the same system modified by doping with Li atoms. The adsorbed Li atoms penetrate into the pores of the silica film and become stabilized at the interface where they donate one electron to the Mo metal. As a consequence, the work function of the Li‐doped SiO2/Mo(112) film is reduced and results in modified adsorption properties. In fact, while on the undoped SiO2/Mo(112) film Au interacts only very weakly, on the Li‐doped surface Au atoms and clusters bind with significant bond strengths. The calculations show that this is due to the occurrence of an electron transfer from the SiO2/Mo(112) interface to the adsorbed gold. The occurrence of the charge transfer is related to the work function of the support but also to the possibility for the silica film to undergo a strong polaronic distortion.
C Factors Pinpoint Resource Utilization in Chemical Industrial Processes
Authors: Voss Bodil , Andersen Simon Ivar , Taarning Esben , Christensen Claus Hviid 
Published: December 2009

AbstractThis Full Paper illustrates the use of the C factor (CO2/product mass ratio) as a parameter to evaluate the CO2‐burden of a product. The C factor contains information of the total amount of CO2 emitted in order to produce a product, and thus enables a direct comparison of different processes from a CO2 aspect. We illustrate how this simple concept can be used to evaluate different resource types and processes. The C factors for different chemicals such as methanol, synfuels, and acetic acid are calculated for oil, coal, natural gas, and biomass. Based on these calculations, the combination of biomass and natural gas is an attractive alternative to coal, leading to products that have significantly lower C factors.
Synthesis of (+)‐Varitriol Analogues via Novel and Versatile Building Blocks Based on Julia Olefination
Authors: Senthilmurugan Annamalai , Aidhen Indrapal Singh 
Published: December 2009

AbstractThe synthesis of (+)‐varitriol (1) analogues was achieved through the use of Julia olefination. The potential anticancer properties of 1 coupled with our interest in developing building blocks that enable olefin formation under the Julia protocol constitute the basis of our research project. Efforts are aimed at the synthesis of building blocks 2 and 3 and to explore their use towards the synthesis of (+)‐varitriol analogues. Herein, we would like to present the synthesis of building block 3 and its ability to react with variety of substituted aromatic‐, heterocyclic‐ and carbohydrate‐derived aldehydes to yield alkene 6 in moderate to good yields with E as the major isomer. The successful coupling of 2 with(furanoside moieties) aldehydes 5k, 5m and 5n in particular and the obtainment of compound 23 reflect the promise associated with the new strategy.
Ruthenium‐Catalyzed Cascade Reactions of Diynes with Norbornadiene – Synthesis of Norbornene Derivatives
Authors: Cheng Chu‐Chun , Chang Chia‐Sen , Hsu Yu‐Lin , Lee Ting‐Yu , Chang Ling‐Chueh , Liu Shih‐Hsien , Wu Yao‐Ting 
Published: December 2009

AbstractNorbornene derivatives 7–11 were prepared from norbornadiene and the corresponding diynes by Ru‐catalyzed [(2+2)+2] cycloaddition and subsequent transfer hydrogenation. The structure and stereochemistry of the cycloadducts were confirmed by X‐ray crystal analysis. This procedure provides high diastereoselectivity to generate norbornenes 7–11 in up to 82 % yield. The scope and limitations of this reaction were investigated. Compounds that contained the skeleton of 1,7‐diaryl‐1,6‐heptadiynes were suitable starting materials. Additionly, 9h was empolyed in the synthesis of polynorbornene 31 by ring‐opening metathesis polymerization (ROMP). The number‐average molecular weight (Mn) and polymer‐distribution index (PDI) of this new polymer were determined to be 28.6 kDa and 1.35, respectively.
2‐Pyrrolidinecarboxylic Acid Ionic Liquid as a Highly Efficient Organocatalyst for the Asymmetric One‐Pot Mannich Reaction
Authors: Zheng Xin , Qian Yun‐Bo , Wang Yongmei 
Published: December 2009

AbstractA novel one‐pot three‐component asymmetric Mannich reaction using [EMIm][Pro] (1) as a catalyst has been developed. By employing this new reaction system, a variety of optically active β‐amino carbonyl compounds were synthesized in up to 99 % yield with up to >99 dr and >99 % ee. The reaction conditions have been optimized and the mechanism for the asymmetric induction is discussed.
Intramolecular Hydrogen Abstraction in Radicals Derived from Inositol 1,3‐Acetals: Efficient Access to Cyclitols
Authors: Murali Chebrolu , Gurale Bharat P. , Shashidhar Mysore S. 
Published: December 2009

AbstractThe benzylidene acetals obtained by cleavage of the orthobenzoate moiety in myo‐inositol 1,3,5‐orthobenzoate were used to prepare mono‐ as well as di‐deoxy inositol derivatives via their xanthates. The dideoxygenation is a result of intramolecular abstraction of the benzylidene acetal hydrogen and subsequent cleavage of the acetal ring. Such a cleavage does not take place in analogous acetals derived from other orthoesters. The 1,3‐acetals derived from myo‐inositol 1,3,5‐orthoesters were also used to prepare neo‐inositol and isomeric deoxy‐amino inositols. Most of the reactions in these synthetic sequences starting from myo‐inositol give one product in each step. The results presented here show that myo‐inositol 1,3,5‐orthobenzoate offers many advantages over other orthoesters for the synthesis of cyclitol derivatives from myo‐inositol.
Two‐dimensional compact finite difference immersed boundary method
Authors: Ferreira de Sousa Paulo J. S. A. , Pereira José C. F. , Allen James J. 
Published: December 2009

AbstractWe present a compact finite differences method for the calculation of two‐dimensional viscous flows in biological fluid dynamics applications. This is achieved by using body‐forces that allow for the imposition of boundary conditions in an immersed moving boundary that does not coincide with the computational grid. The unsteady, incompressible Navier–Stokes equations are solved in a Cartesian staggered grid with fourth‐order Runge–Kutta temporal discretization and fourth‐order compact schemes for spatial discretization, used to achieve highly accurate calculations. Special attention is given to the interpolation schemes on the boundary of the immersed body. The accuracy of the immersed boundary solver is verified through grid convergence studies. Validation of the method is done by comparison with reference experimental results. In order to demonstrate the application of the method, 2D small insect hovering flight is calculated and compared with available experimental and computational results. Copyright © 2009 John Wiley & Sons, Ltd.
Cytogenetics of long‐term survivors of ETV6‐RUNX1 fusion positive acute lymphoblastic leukemia
Authors: Konn Zoë J. , Martineau Mary , Bown Nicholas , Richards Sue , Swansbury John , Talley Polly , Wright Sarah L. , Harrison Christine J. 
Published: December 2009

AbstractThis study describes the cytogenetics of 33 children with ETV6‐RUNX1 positive acute lymphoblastic leukemia (ALL) who had been in continuous complete remission for a minimum of 8.8 years [median event‐free survival (EFS) 10.9 years]. The results were compared with a published series of 16 fusion positive patients treated on the same childhood ALL trial, who had relapsed (median EFS, 2.3 years). Interphase fluorescence in situ hybridization (FISH) at diagnosis showed deletion of the second ETV6 signal from all fusion positive cells in 45% of the long‐term survivors but in none of the relapsed patients, whereas patients with mixed populations with retained or lost second signals were more frequent among those who had relapsed (69%) than the long‐term survivors (21%). Interphase populations with two fusion signals in 18% of the long‐term survivors and 31% of relapsed patients were smaller in the long‐term survivors (median, 4% of total cells) than in the relapsed patients (median, 84%). The additional copy of chromosome 21 in 30% of long‐term survivors and in 69% of relapsed patients was a derived chromosome 21 in 20% and 55% of patients, respectively. Metaphase FISH for 26 long‐term survivors and 15 relapsed patients revealed complex karyotypes in both groups. Variant translocations involved different chromosome arms between the long‐term survivors and relapsed patients. It appears that the two groups have some distinguishing cytogenetic features at the time of diagnosis, which may provide pointers to relapse that are worthy of more detailed study. © 2009 Wiley‐Liss, Inc.
Telomere shortening and chromosomal instability in myelodysplastic syndromes
Authors: Lange Kathrin , Holm Lisa , Vang Nielsen Kirsten , Hahn Andreas , Hofmann Winfried , Kreipe Hans , Schlegelberger Brigitte , Göhring Gudrun 
Published: December 2009

AbstractTelomere shortening and chromosomal instability are believed to play an important role in the development of myeloid neoplasia. So far, published data are only available on the average telomere length in myelodysplastic syndromes (MDS) and acute myeloid leukemia (AML), but not on the telomere length of individual chromosomes. We used a new technique, telomere/centromere‐fluorescence in situ hybridization (T/C‐FISH), which combines fluorescence R‐banding and FISH using a probe against the telomere repeats to measure the telomere length of each chromosome arm in 78 patients with MDS. In line with the previous results, patients with MDS showed significantly shorter telomeres than those of healthy controls. Telomere lengths did not differ significantly between distinct morphological subtypes of MDS. However, there was a significant difference in telomere length between patients with an isolated monosomy 7 and patients with a normal karyotype (P < 0.05). Notably, patients with an isolated monosomy 7 showed significantly longer telomeres than patients with a normal karyotype in many chromosome arms, among them 7p and 7q. Neo‐telomeres were found in two patients with a complex karyotype, in one case at the fusion site of a dic(14;20). Normal and aberrant metaphases of the same patient did not differ in telomere length, thus indicating to telomere shortening as a basic mechanism affecting all hematopoietic cells in patients with MDS. In some MDS subtypes, like MDS with isolated monosomy 7, telomeres may be stabilized and even increase in length because of the activation of telomerase or alternative mechanisms. © 2009 Wiley‐Liss, Inc.