bluuebunny/crossref_metadata_2025_split huggingface dataset:
ChemInform Abstract: An Efficient Three‐Component One‐Pot Approach to the Synthesis of 2,3,4,5‐Tetrahydro‐1H‐2‐benzazepines by Means of Rhodium‐Catalyzed Hydroaminomethylation.
Authors: Vieira Tiago O. , Alper Howard 
Published: June 2008

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: Differentially Protected Benzenediboronic Acids: Divalent Cross‐Coupling Modules for the Efficient Synthesis of Boron‐Substituted Oligoarenes.
Authors: Noguchi Hiroyoshi , Shioda Takayuki , Chou Chih‐Ming , Suginome Michinori 
Published: June 2008

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: Triazinyl Architecture on Bifunctional Carbonyl Templates for the Production of Potential Neutron Capture Therapy Agents: Synthesis and Characterization of 1,3,5‐Triazinylcarborane Derivatives.
Authors: Lee Chai‐Ho , Jin Guo Fan , Yoon Ji Ho , Kim Sun Hee , Lee Jong‐Dae , Nakamura Hiroyuki , Kang Sang Ook 
Published: June 2008

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: Derivatives of Arborine [1‐Methyl‐2‐(phenylmethyl)‐4(1H)‐quinazolinone]
Authors: Kovtunenko V. A. , Kucherenko T. T. , Zubatyuk R. I. , Shishkin O. V. , Yushchenko D. A. 
Published: June 2008

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: An Efficient Total Synthesis of Decarestrictine D.
Authors: Gupta Priti , Kumar Pradeep 
Published: June 2008

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: Investigation of Structural Perfection and Faceting in Highly Er‐Doped Yb3Al5O12 Crystals.
Authors: Kolodziejak K. , Wierzchowski W. , Wieteska K. , Malinowski M. , Graeff W. , Lukasiewicz T. 
Published: June 2008

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: Entry into a New Class of Protein Kinase Inhibitors by Pseudo Ring Design.
Authors: Furet Pascal , Caravatti Giorgio , Guagnano Vito , Lang Marc , Meyer Thomas , Schoepfer Joseph 
Published: June 2008

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: Potent Memapsin 2 (β‐Secretase) Inhibitors: Design, Synthesis, Protein‐Ligand X‐Ray Structure, and in vivo Evaluation.
Authors: Ghosh Arun K. , et al. et al. 
Published: June 2008

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: Exploitation of a Very Strongly σ‐Donating SnII Ligand: Synthesis of a Homoleptic, Octahedral NiIV Complex.
Authors: Aldridge Simon 
Published: June 2008

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: Synergistic Effect of Binary Component Ligands in Chiral Catalyst Library Engineering for Enantioselective Reactions
Authors: Ding Kuiling 
Published: June 2008

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: Meldrum′s Acid and Related Compounds in the Synthesis of Natural Products and Analogues
Authors: Ivanov Andrey S. 
Published: June 2008

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: Nature of Salt Effects and Mechanism of Covalent Bond Heterolysis
Authors: Dvorko Genrih F. , Ponomareva Engelsine A. , Ponomarev Mykola E. , Stambirsky Mikhailo V. 
Published: June 2008

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: Continuous Flow Reactors, a Tool for the Modern Synthetic Chemist
Authors: Wiles Charlotte , Watts Paul 
Published: June 2008

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: PET (Positron Emission Tomography) Imaging of Biomolecules Using Metal—DOTA Complexes: A New Collaborative Challenge by Chemists, Biologists, and Physicians for Future Diagnostics and Exploration of in vivo Dynamics
Authors: Tanaka Katsunori , Fukase Koichi 
Published: June 2008

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.
Ruthenium Complexes Bearing Bulky Pentasubstituted Cyclopentadienyl Ligands and Evaluation of [Ru(η5‐C5Me4R)(MeCN)3][PF6] Precatalysts in Nucleophilic Allylic Substitution Reactions
Authors: Zhang Hui‐Jun , Demerseman Bernard , Xi Zhenfeng , Bruneau Christian 
Published: June 2008

Abstract[Ru(η5‐C5Me4R)(MeCN)3][PF6] (R = CH2tBu, iPr, tBu, and CF3; 2–5) complexes were synthesized in two steps starting from the appropriate cyclopentadienes and RuCl3·3H2O. The fully substituted ruthenocenes [Ru(C5Me5)(C5Me4R*)], [Ru(C5Me5)(C5nPr4R*)] {R* = (1R,5S)‐6,6‐dimethylbicyclo[3.1.1]hept‐2‐en‐2‐yl} and [Ru(C5Me5)(C5nPr5)] were obtained by treating [Ru(C5Me5)Cl]4 with the corresponding cyclopentadienyllithium salts. Complexes 2–5 were evaluated as catalyst precursors for nucleophilic allylic substitution reactions, and the results were compared to those obtained with the [Ru(C5Me5)(MeCN)3][PF6] (1) precatalyst. The etherification of p‐methoxyphenol with the typical aliphatic chlorohexene allylic substrate shows that the introduction of the bulky tert‐butyl and trifluoromethyl groups into the tetramethylcyclopentadienyl ring results in a valuable enhancement in regioselectivity in favour of the branched allyl aryl ether.(© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2008)
Clinical outcome of T1 glottic carcinoma since the introduction of endoscopic CO2 laser surgery as treatment option
Authors: Sjögren Elisabeth V. , Langeveld Ton P. M. , Baatenburg de Jong Robert J. 
Published: June 2008

AbstractBackgroundSince the introduction of endoscopic laser surgery at our institution in 1996, 189 patients have been treated for T1 glottic carcinoma.MethodsTreatment allocation (radiotherapy vs laser surgery) and outcome were evaluated.ResultsFifty‐one percent of T1a lesions were considered suitable for laser surgery. Sixteen percent of T1a patients treated with laser surgery needed additional treatment because of positive resection margins. Overall local control and larynx preservation were 89% and 96%. Both were poorer in T1a patients with larger lesions treated with radiotherapy (local control 75% versus 89%, p = .05, larynx preservation 83% vs 100%, p = .001).ConclusionOutcome for T1a patients selected for laser surgery is excellent. In patients with larger lesions treated with radiotherapy, outcome is inferior to patients selected for laser surgery, but also to that reported for (unselected) T1a carcinomas treated with radiotherapy in literature. Strategies to improve treatment results in patients deemed unsuitable for laser surgery should be designed. © 2008 Wiley Periodicals, Inc. Head Neck, 2008
Investigating DRG cost weights for hospitals in middle income countries
Authors: Ghaffari Shahram , Doran Christopher , Wilson Andrew , Aisbett Chris , Jackson Terri 
Published: June 2008

AbstractIdentifying the cost of hospital outputs, particularly acute inpatients measured by Diagnosis Related Groups (DRGs), is an important component of casemix implementation. Measuring the relative costliness of specific DRGs is useful for a wide range of policy and planning applications. Estimating the relative use of resources per DRG can be done through different costing approaches depending on availability of information and time and budget. This study aims to guide costing efforts in Iran and other countries in the region that are pursuing casemix funding, through identifying the main issues facing cost finding approaches and introducing the costing models compatible with their hospitals accounting and management structures. The results show that inadequate financial and utilisation information at the patient's level, poorly computerized ‘feeder systems’; and low quality data make it impossible to estimate reliable DRGs costs through clinical costing. A cost modelling approach estimates the average cost of 2.723 million Rials (Iranian Currency) per DRG. Using standard linear regression, a coefficient of 0.14 (CI = 0.12–0.16) suggests that the average cost weight increases by 14% for every one‐day increase in average length of stay (LOS).We concluded that calculation of DRG cost weights (CWs) using Australian service weights provides a sensible starting place for DRG‐based hospital management; but restructuring hospital accounting systems, designing computerized feeder systems, using appropriate software, and development of national service weights that reflect local practice patterns will enhance the accuracy of DRG CWs. Copyright © 2008 John Wiley & Sons, Ltd.This article was published online on 5 June 2008. An error was subsequently identified. This notice is included in the online and print versions to indicate that both have been corrected [08/07/2009].[Correction made here after initial online publication].
Hydrogel based tissue mimicking phantom for in‐vitro ultrasound contrast agents studies
Authors: Demitri Christian , Sannino Alessandro , Conversano Francesco , Casciaro Sergio , Distante Alessandro , Maffezzoli Alfonso 
Published: June 2008

AbstractUltrasound medical imaging (UMI) is the most widely used image analysis technique, and often requires advanced in‐vitro set up to perform morphological and functional investigations. These studies are based on contrast properties both related to tissue structure and injectable contrast agents (CA). In this work, we present a three‐dimensional structure composed of two different hydrogels reassembly the microvascular network of a human tissue. This phantom was particularly suitable for the echocontrastographic measurements in human microvascular system. This phantom has been characterized to present the acoustic properties of an animal liver, that is, acoustic impedance (Z) and attenuation coefficient (AC), in UMI signal analysis in particular; the two different hydrogels have been selected to simulate the target organ and the acoustic properties of the vascular system. The two hydrogels were prepared starting from cellulose derivatives to simulating the target organ parenchyma and using a PEG‐diacrylate to reproduce the vascular system. Moreover, harmonic analysis was performed on the hydrogel mimicking the liver parenchyma hydrogel to evaluate the ultrasound (US) distortion during echographic measurement. The phantom was employed in the characterization of an experimental US CA. Perfect agreement was found when comparing the hydrogel acoustical properties materials with the corresponding living reference tissues (i.e., vascular and parenchimal tissue). © 2008 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 2008
Biosorption of methylene blue from aqueous solution by softstem bulrush (Scirpus tabernaemontani Gmel.)
Authors: Li Yan , Zhang Jian , Zhang Chenglu , Wang Li , Zhang Bo 
Published: June 2008

AbstractBACKGROUND: The removal of methylene blue from aqueous solution was studied using softstem bulrush (Scirpus tabernaemontani Gmel.) as the biosorbent. The effects of various parameters including contact time, biosorbent dosage, ionic strength and solution pH on the biosorption were investigated.RESULTS: The sorption capacity increased with an increase in biosorbent dosage and a decrease in ionic strength. The equilibrium time was found to be 240 min for full equilibration. Pseudo‐first‐order, pseudo‐second‐order, Bangham equation and intraparticle diffusion models were applied to fit the kinetic data, and the results showed that the sorption process followed the pseudo‐second‐order model. Equilibrium data conformed to Langmuir and Redlich–Peterson isotherm models, with a maximum monolayer biosorption capacity of 53.8 mg g−1 for the Langmuir isotherm at 18 °C. The value of ΔG was estimated to be − 29.24 kJ mol−1, indicating the spontaneous nature of the biosorption. The biosorption process was strongly pH‐dependent and favourable at alkaline pH.CONCLUSION: Softstem bulrush, which is readily available and inexpensive, could be employed as a promising biosorbent for the removal of dye. Copyright © 2008 Society of Chemical Industry
Solvability of the Tricomi problem for second order equations of mixed type with degenerate curve on the sides of an angle
Authors: Wen Guo Chun 
Published: June 2008

AbstractIn [1]–[6], the author posed and discussed the Tricomi problem of second order mixed equations, but he only consider some special mixed equations. In [3], the author discussed the uniqueness of solutions of the Tricomi problem for some second order mixed equation with nonsmooth degenerate line. The present paper deals with the Tricomi problem for general second order mixed equations with degenerate curve on the sides of an angle. I first give the formulation of the above problem, and then prove the solvability of the Tricomi problem for the mixed equations with degenerate curve on the sides of an angle, by using the existence of solutions of the mixed problem for the degenerate elliptic equations (see [11]). Here I mention that the used method in this paper is different to those in other papers or books, because I introduce the new notation (2.1) below, such that the second order equation of mixed type can be reduced to the first order complex equation of mixed type with singular coefficients, hence I can use the advantage of complex analytic method. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
EPR study of Ni distribution in LaNiy Co1–yO3 solid solutions (0 ≤ y ≤ 0.25)
Authors: Ivanova S. , Zhecheva E. , Stoyanova R. 
Published: June 2008

AbstractThe distribution of Ni in LaNiy Co1–y O3 solid solutions was examined by means of EPR spectroscopy. For the assignment of the EPR signals, La1–x Srx CoO3 oxides were used as reference for Co3+–Co4+ magnetic clusters. For the oxides heated at 600 °C, the EPR spectra of LaNiy Co1–y O3 consist of a signal due to magnetic Ni clusters, while the oxides prepared at 700 °C display an EPR signal due to ferromagnetic coupled Co3+ and Co4+ impurity ions that do not form magnetic clusters. LaNiy Co1–y O3 samples prepared at T > 700 °C are EPR “silent”. The effect of the preparation method and the preparation temperature on the formation of Ni clusters is discussed. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
Synthesis and characterization of Fe3Si/SiO2 structures for spintronics
Authors: Mantovan R. , Georgieva M. , Fanciulli M. , Goikhman A. , Barantcev N. , Lebedinskii Yu. , Zenkevich A. 
Published: June 2008

AbstractThe Fe3Si thin film is a good candidate as ferromagnetic electrode in spintronics devices due to its high spin polarization and high Curie temperature. The use of Fe3Si in contact with a thin SiO2 barrier can have various applications in practical devices, such as magnetic tunnel junctions. We report on the synthesis of Fe3Si/SiO2 structures, in one vacuum cycle, by pulsed laser deposition and glow‐discharge plasma oxidation followed by vacuum annealing. The structural and morphological characterization of the Fe3Si/SiO2 stacks is performed by in‐situ X‐ray photoelectron spectroscopy and with atomic force microscopy. Using a 57Fe tracer layer, conversion electron Mössbauer spectroscopy is performed at the Fe3Si/SiO2 interface, proving the formation of a ferromagnetic phase with no paramagnetic inclusions. Our experimental results indicate that the Fe3Si/SiO2 stack is a promising system for application in spintronics devices. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
Paramagnetic and ferromagnetic resonance studies on dilute magnetic semiconductors based on GaN
Authors: Kammermeier T. , Dhar S. , Ney V. , Manuel E. , Ney A. , Ploog K. H. , Lo F.‐Y. , Melnikov A. , Wieck A. D. 
Published: June 2008

AbstractMagnetic resonance studies were preformed on the dilute magnetic semiconductor Gd:GaN. In samples grown by molecular beam epitaxy resonances were observed at temperatures below 50 K. The temperature dependence of the resonance field and the line width suggest a ferromagnetic origin. No similar signals were found in Gd implanted samples even for a Gd concentration ten times higher. At temperatures close to 5 K additional signals were observed near g = 2 in these samples. They are superimposed by a strong substrate signal which is observable in all samples and is attributed to nitrogen donors on sites of different symmetry in the SiC substrate crystal. Different possible explanations of our findings are discussed with special regard to a model suggesting magnetically polarized spheres of influence. By means of magnetic resonance we can not corroborate ferromagnetism at room temperature in Gd:GaN as suggested by SQUID data. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
Chemoselective Nanowire Fuses: Chemically Induced Cleavage and Electrical Detection of Carbon Nanofiber Bridges
Authors: Li Bo , Shang Lu , Marcus Matthew S. , Clare Tami Lasseter , Perkins Edward , Hamers Robert J. 
Published: June 2008

AbstractA new type of nanoscale bioswitch based on the electrical detection of chemically induced cleavage of chemical bonds, which bind individual nanowires across a pair of electrodes is demonstrated. Carbon nanofibers are manipulated using dielectrophoresis to form single‐nanowire bridges across microelectrode junctions, and are anchored through a biomolecular interaction. Once in place, chemically induced cleavage of a recognition site along the bonds linking the nanowire to the electrodes allows the nanowire to be easily removed by a flow of fluid; this removal can be detected in real time via changes in the AC electrical response. This form of sensing is inherently digital in nature as the removal of a single nanowire produces a sudden decrease in the current between electrodes and is essentially a chemoselective fuse. These results suggest that this sensing principle could be a general method for digital chemical and/or biological sensing using individual nanowires.
Low‐Dimensional, Hinged Bar‐code Metal Oxide Layers and Free‐Standing, Ordered Organic Nanostructures from Turbostratic Vanadium Oxide
Authors: O'Dwyer Colm , Lavayen Vladimir , Fuenzalida David , Lozano Harold , Ana Maria A. Santa , Benavente Eglantina , González Guillermo , Sotomayor Torres Clivia M. 
Published: June 2008

AbstractBoth low‐dimensional bar‐coded metal oxide layers, which exhibit molecular hinging, and free‐standing organic nanostructures can be obtained from unique nanofibers of vanadium oxide (VOx). The nanofibers are successfully synthesized by a simple chemical route using an ethanolic solution of vanadium pentoxide xerogel and dodecanethiol resulting in a double bilayered laminar turbostratic structure. The formation of vanadium oxide nanofibers is observed after hydrothermal treatment of the thiol‐intercalated xerogel, resulting in typical lengths in the range 2–6 µm and widths of about 50–500 nm. We observe concomitant hinging of the flexible nanofiber lamina at periodic hinge points in the final product on both the nanoscale and molecular level. Bar‐coded nanofibers comprise alternating segments of organic–inorganic (thiols–VOx) material and are amenable to segmented, localized metal nanoparticle docking. Under certain conditions free‐standing bilayered organic nanostructures are realized.
Gossypol analysis in cottonseed oil by HPLC
Authors: Chamkasem N. 
Published: June 2008

AbstractGossypol in cottonseed oil was selectively separated by the extraction of cottonseed oil with a hexane and N,N dimethyl formamide:water (2∶1, v/v) solvent mixture. After filtration, the extract was injected into the HPLC with the elution time less than 15 min. The spectrophotometric method showed 2 to 5 times higher values of gossypol content in different types of glanded cottonseed oil than did the HPLC method. This is probably due to the gossypol derivatives and coloring interferences reacting with p‐anisidine to develop color and increasing the absorbance reading, whereas gossypol was separated and detected in the HPLC method.