bluuebunny/crossref_metadata_2025_split huggingface dataset:
Efficacy of maropitant for treatment and prevention of emesis caused by intravenous infusion of cisplatin in dogs
Authors: de la Puente-Redondo Victor A. , Tilt Nicola , Rowan Tim G. , Clemence Rick G. 
Published: January 2007

Abstract
Objective—To evaluate the efficacy of maropitant, a novel neurokinin-1 receptor antagonist, to treat and prevent emesis caused by IV infusion of a chemotherapeutic dose of cisplatin (70 mg/m2) in dogs.
Animals—64 healthy 6-month-old Beagles (32 males and 32 females).
Procedures—To evaluate the effect of maropitant on ongoing emesis, 24 dogs were randomized to 2 treatment groups (12 dogs each). Saline (0.9% NaCl) solution or maropitant (1 mg/kg) was administered once by SC injection immediately following the first emetic event after cisplatin infusion. Dogs were assessed for emesis for 6 hours after initiation of cisplatin infusion. To evaluate the use of maropitant for the prevention of emesis, 40 dogs were randomized to 4 treatment groups (10 dogs each). Placebo or maropitant (1, 2, or 3 mg/kg) was administered PO as a tablet. Cisplatin infusion was initiated at 19 hours after treatment, and dogs were assessed for emesis for 6 hours.
Results—No treatment-related adverse events were observed in either study. For the treatment of ongoing emesis, significantly fewer emetic events were observed for maropitant-treated dogs, compared with placebo-treated dogs (mean, 5.2 vs 15.8), and the mean time to cessation of emesis was significantly shorter (0.65 vs 1.65 hours). In the prevention of emesis, maropitant-treated dogs had significantly fewer emetic events (means, 2.7, 1.1, and 0.5 for maropitant at 1, 2, and 3 mg/kg, respectively), compared with placebo-treated dogs (mean, 20.3).
Conclusions and Clinical Relevance—Results suggest that maropitant is safe and effective in the treatment and prevention of cisplatin-induced emesis in dogs.
RFI detection by automated feature extraction and statistical analysis
Authors: Winkel B. , Kerp J. , Stanko S. 
Published: January 2007

AbstractIn this paper we present an interference detection toolbox consisting of a high dynamic range Digital Fast‐Fourier‐Transform spectrometer (DFFT, based on FPGA‐technology) and data analysis software for automated radio frequency interference (RFI) detection. The DFFT spectrometer allows high speed data storage of spectra on time scales of less than a second. The high dynamic range of the device assures constant calibration even during extremely powerful RFI events. The software uses an algorithm which performs a two‐dimensional baseline fit in the time‐frequency domain, searching automatically for RFI signals superposed on the spectral data. We demonstrate, that the software operates successfully on computer‐generated RFI data as well as on real DFFT data recorded at the Effelsberg 100‐m telescope. At 21‐cm wavelength RFI signals can be identified down to the 4σ rms level. A statistical analysis of all RFI events detected in our observational data revealed that: (1) mean signal strength is comparable to the astronomical line emission of the Milky Way, (2) interferences are polarised, (3) electronic devices in the neighbourhood of the telescope contribute significantly to the RFI radiation. We also show that the radiometer equation is no longer fulfilled in presence of RFI signals. (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
Optimising optimal image subtraction
Authors: Israel H. , Hessman F. V. , Schuh S. 
Published: January 2007

AbstractDifference imaging is a technique for obtaining precise relative photometry of variable sources in crowded stellar fields and, as such, constitutes a crucial part of the data reduction pipeline in surveys for microlensing events or transiting extrasolar planets. The Optimal Image Subtraction (OIS) algorithm of Alard & Lupton (1998) permits the accurate differencing of images by determining convolution kernels which, when applied to reference images with particularly good seeing and signal‐to‐noise (S/N), provide excellent matches to the point‐spread functions (PSF) in other images of the time series to be analysed. The convolution kernels are built as linear combinations of a set of basis functions, conventionally bivariate Gaussians modulated by polynomials. The kernel parameters, mainly the widths and maximal degrees of the basis function model, must be supplied by the user. Ideally, the parameters should be matched to the PSF, pixel‐sampling, and S/N of the data set or individual images to be analysed. We have studied the dependence of the reduction outcome as a function of the kernel parameters using our new implementation of OIS within the IDL‐based TRIPP package. From the analysis of noise‐free PSF simulations of both single objects and crowded fields, as well as the test images in the ISIS OIS software package, we derive qualitative and quantitative relations between the kernel parameters and the success of the subtraction as a function of the PSF widths and sampling in reference and data images and compare the results to those of other implementations found in the literature. On the basis of these simulations, we provide recommended parameters for data sets with different S/N and sampling. (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
UBV photoelectric photometry of the 1H/2H double mode cepheid CO Aurigae
Authors: Santangelo M. M. M. , Cavalletti G. , Benedetti W. 
Published: January 2007

AbstractWe performed new UBV photoelectric photometry of the double mode cepheid CO Aur. A careful time series analysis, by means of various algorithms, of our light curves of CO Aur enabled us to confirm the two previously known periodicities (Antonello et al. 1986) and their ratio of about 0.800. This ratio can be explained if CO Aur is a double mode cepheid pulsating in the first and second overtone (1H/2H); only two such stars are known in our galaxy. From the analysis of present data, the high stability of the periods stated by Fuhrmann et al. (1984) is fully confirmed; there is no clear evidence of variations of other light curve parameters. Within the limits of our photoelectric data, the secondary periodicity of CO Aur has a perfectly sinusoidal shape. We also performed a time series analysis of the Tycho epoch photometry in B T and V T; and the high stability of the first period of CO Aur is confirmed by the Tycho datasets too. (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
On‐line database of photometric observations of magnetic chemically peculiar stars
Authors: Mikulášek Z. , Janík J. , Zverko J. , Žižňovský J. , Zejda M. , Netolický M. , Vaňko M. 
Published: January 2007

AbstractWe present our extensive project of the On‐line database of photometric observations of magnetic chemically peculiar stars to collect published data of photometric observations of magnetic chemically peculiar (mCP) stars in the optical and near IR regions. Now the nascent database contains more than 107 000 photometric measurements of 102 mCP stars and will be continually supplemented with published or new photometric data on these and about 150 additional mCP stars. This report describes the structure and organization of the database. Moreover, for the all included data we estimated the error of measurements and the effective amplitudes of the light curves. (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
A New Class of Binuclear Gallium Hydrides: Synthesis and Properties of [{GaCl(hpp)H}2] (hpp=1,3,4,6,7,8‐Hexahydro‐2H‐pyrimido[1,2‐a]pyrimidate)
Authors: Robinson George , Tang Christina Y. , Köppe Ralf , Cowley Andrew R. , Himmel Hans‐Jörg 
Published: January 2007

AbstractHerein we report on the synthesis and characterization of the first representative of a new class of gallium hydrides, namely [{GaCl(hpp)H}2] (hpp=1,3,4,6,7,8‐hexahydro‐2H‐pyrimido[1,2‐a]pyrimidate). Our X‐ray diffraction data suggest the presence of weak HH contacts between adjacent [{GaCl(hpp)H}2] molecules in the crystal. With the aid of quantum‐chemical calculations, the pathway of its formation starting with the adduct H2ClGa⋅NMe3 and the pyrimidine hppH were analyzed. [{GaCl(hpp)H}2] slowly decomposes at 25 °C, a process which presumably leads under H2 elimination to [{GaCl(hpp)}2]. Although we were not yet able to characterize [{GaCl(hpp)}2] experimentally, DFT calculations provide information about its likely structure. According to these calculations, the molecule features a GaGa single bond.
Classical and Distonic Radical Cations: A Valence Bond Approach
Authors: Bouchoux Guy , Berruyer Florence , Hiberty Philippe C. , Wu Wei 
Published: January 2007

AbstractThe conventional radical cations arising from the ionization of CH3CH2X (X=F, OH, NH2, Cl, SH, PH2), and their distonic isomers, CH2CH2XH.+, were studied by means of standard Møller–Plesset and G2 methods, and by an ab initio valence bond method. Among the conventional structures, two distinct states are considered. In the so‐called c′ states, the unpaired electron is in an orbital that lies in the plane of the heavy atoms, while the c′′ states have their unpaired electron in an orbital lying out of the plane. It is shown that c′ states are, as a rule, more stable than the c′′ states, by up to approximately 20 kJ mol−1 depending on the nature of X, owing to a stabilizing interplay of resonating structures. While the geometries of the c′′ states are rather similar to those of the neutral molecules, some of the c′ states display very different geometries, characterized by elongated CC bonds, particularly when X=F or, to a lesser extent, when X=OH or Cl. These peculiar geometric features are rationalized by the valence bond analysis, which reveals that the CC bond in these species is better viewed as a two‐center, one‐electron bond. The distonic radical cations are generally more stable than the conventional ones (by 20–100 kJ mol−1), except for the less electronegative X groups of the series, namely X=SH and PH2. In these two cases, together with X=NH2, the radical cation displays a classical distonic structure, as regards the geometry and electronic state. On the other hand, considerable CX elongation is found for X=F or Cl. In these last cases, the valence bond analysis shows that the radical cation is better viewed as an ion–molecule complex between an ionized ethylene and a neutral HX molecule. The electronic structure of the distonic radical cation with X=OH lies between the two previous limiting descriptions.
Coupled FEM and lumped circuit model of the electromagnetic response of coaxially insulated windings in two slot cores
Authors: Holmberg Pär , Leijon Mats 
Published: January 2007

AbstractThis paper presents a coupled FEM and lumped circuit modelling approach that is primarily intended for high‐frequency and overvoltage simulations of rotating electric machines with coaxially insulated windings, such as Powerformer and Motorformer. The magnetic fields and their interaction with the conductors of the winding are simulated with the aid of a FEM‐program. The displacement current and its losses are modelled with an external lumped circuit. To consider eddy current losses, the stranded conductors and the laminated steel cores are replaced by homogeneous bodies with similar losses over a wide frequency range. The approach is illustrated and experimentally verified for a set‐up with a cable wound around two slot cores. The model agrees well with measurements up to 1 MHz. Copyright © 2007 John Wiley & Sons, Ltd.
A multi‐functional power conditioner with real‐time voltage regulation for energy saving
Authors: Ma T. T. , Chiang S. J. 
Published: January 2007

AbstractThis paper presents the design details of a multi‐functional three‐phase four‐wire power conditioner. The proposed power conditioner can compensate the reactive power, harmonic current, unbalanced power, and zero‐sequence current of the load with a capacity‐limitation manner. It can also simultaneously regulate multiple load voltages based on the prescribed Power–Voltage characteristic of distinct loads for real‐time energy saving. The theoretical analysis and detailed design procedure of the controllers performing various functions are presented. A 6‐kVA experimental system with two induction motors and various nonlinear loads is implemented for the related studies and the results are presented in this paper. The feasibility and effectiveness of the proposed control scheme are confirmed through measured results obtained from practical hardware experiments. Copyright © 2006 John Wiley & Sons, Ltd.
Mass spectrometric characterization of 3′‐imino[60]fulleryl‐3′‐deoxythymidine by collision‐induced dissociation
Authors: Greisch Jean‐François , De Pauw Edwin 
Published: January 2007

AbstractThe primary structure of 3′‐imino[60]fulleryl‐3′‐deoxythymidine ions is studied using mass spectrometry both in the positive and negative modes. Interaction between the subunits is discussed using collision‐induced dissociation (CID) spectra. Collisional activation with argon of the sodiated cations leads to the cleavage of the glycosidic bond and the transfer of a radical hydrogen from the deoxyribose to the thymine. The sodiated thymine is the only fragment observed for low collision energies in the positive mode. In the negative mode, two different ionization mechanisms take place, reduction and deprotonation in the presence of triethylamine. The 2.7 eV electron affinity of C60 and its huge cross section compared to the small cross section and predicted 0.44 eV electron affinity of the thymidine subunit most likely localize the radical electron on the fullerene. On the other hand, deprotonation of the 3′‐azido‐3′‐deoxythymidine (AZT) is known to occur in N‐3, the most acidic site of the nucleobase. Consequently, deprotonation causes the negative charge to be initially localized on the thymine. Both types of parent anions give the radical anion C60•− as fragment. The other fragments detected are the dehydrogenated 3′‐imino[60]fulleryl‐3′‐deoxyribose anion, C60NH2−, C60N− and C60H−. Since in negative ion mass spectrometry all fragments include the [60]fullerene unit, this suggests that the fragmentation is driven by the electron affinity of the [60]fullerene, likely responsible for a charge transfer between the deprotonated thymine and the C60. Copyright © 2007 John Wiley & Sons, Ltd.
On the norms of quaternionic extensions of real and complex linear mappings
Authors: Alpay Daniel , Luna‐Elizarrarás M. Elena , Shapiro Michael 
Published: January 2007

AbstractWe study the connections between the norms of bounded operators on real and complex normed spaces, and with range in quaternionic spaces, and of their quaternionic extensions. We study some aspects of the relations between the quaternionization and the complexification of an inner product real space. The problems that arise when k‐linear mappings are defined for the quaternionic case, are considered too. Copyright © 2006 John Wiley & Sons, Ltd.
Theoretical study of the interaction d10‐d8 between Pt(0) and M(I) on the [Pt(PH3)3MPH3] complexes (M = Cu, Ag, Au)
Authors: Mendizábal Fernando , Olea‐Azar Claudio , Miranda Sebastian 
Published: January 2007

AbstractAb initio calculations suggest that a series of complexes of type [Pt(PH3)3MPH3]+ (M = Au, Ag, Cu) are stable. We found that changes around the equilibrium distance PtM and in the interaction energies are sensitive to the electron correlation potential. This effect was evaluated using several levels of theory, including HF, MP2, and B3LYP. Both the magnitude of the interaction energies and distances PtM indicate a formal chemical bond, the latter being ratified by orbital diagram. © 2007 Wiley Periodicals, Inc. Int J Quantum Chem, 2007
Gelatinization and Thermal Properties of Modified Cassava Starches
Authors: Tran Thierry , Piyachomkwan Kuakoon , Sriroth Klanarong 
Published: January 2007

AbstractThe thermal properties of seven commercial modified cassava starches, including oxidized, acetylated, cross‐linked, and combined acetylated and cross‐linked starches were studied by differential scanning calorimetry (DSC) in the glassy and rubbery states. Increase in gel hardness in the rubbery state during storage was also monitored, as well as gelatinization behavior. The modified starches were prepared from granular starch and had a degree of substitution in the range 0–0.053. The glass transition temperatures (Tg) of the modified starches were 3–6°C significantly lower than that of the non‐modified starch. The physical aging peak temperatures were also significantly reduced by 2–3°C, compared to the non‐modified starch, while aging enthalpies increased. Starch modifications did not decrease amylopectin retrogradation significantly. During storage, the oxidized starch gel became significantly harder than the non‐modified starch gel, while the hardness of the acetylated and/or cross‐linked starch gels was significantly reduced, which confirmed that acetylation or cross‐linking can decrease hardness, even when the extent of modification is limited. Different modifications controlled different properties of the starch system, with cross‐linking and acetylation influencing the gelatinization behavior and the changes in starch gel texture during storage, respectively.
Synthesis and Physicochemical Characteristics of New Tetrachloroferrates(III) with Dimethylammonium Cation: X‐ray Crystal Structure of Bis(dimethylammonium) Chloride Tetrachloroferrate(III)
Authors: Wyrzykowski Dariusz , Kruszyński Rafał , Maniecki Tomasz , Warnke Zygmunt 
Published: January 2007

AbstractTwo new tetrachloroferrates(III) have been synthesized of molecular formulas [(CH3)2NH2][FeCl4] and [(CH3)2NH2]2FeCl5. The differences in their physicochemical properties have been highlighted using thermal analysis (TG‐MS) and differential scanning calorimetry (DSC). The crystal and molecular structure of [(CH3)2NH]2FeCl5 was determined. The iron(III) cation is four coordinated by chloride ions, and it adopts a slightly distorted tetrahedral coordination with three angles smaller and three larger than the tetrahedral one. In the structure four intermolecular N‐H···Cl hydrogen bonds link the [(CH3)2NH2]+ cations to dimers via a Cl− bridge.
Synthese von Cadmiumnitrid Cd3N2 durch thermischen Abbau von Cadmiumazid Cd(N3)2 und Kristallstrukturbestimmung aus Röntgen‐Pulverbeugungsdaten
Authors: Karau Friedrich , Schnick Wolfgang 
Published: January 2007

AbstractSynthesis of Cadmium Nitride Cd3N2 by Thermolysis of Cadmium Azide Cd(N3)2 and Crystal Structure Determination from X‐ray Powder Diffraction DataCadmium nitride Cd3N2 was obtained by thermolysis of cadmium azide Cd(N3)2 at 2·10−6 mbar and 210 °C. It was obtained as a black, crystalline powder which becomes brown in air due to formation of cadmium amide Cd(NH2)2. The crystal structure of Cd3N2 was determined from X‐ray powder diffraction data and refined by the Rietveld method ($Ia{\bar 3}$, a = 10.829(9) Å, V = 1270(3) Å3, Z = 16, R(F2) = 0.1196). Cd3N2 crystallizes in the anti‐bixbyite structure type and is isotypic to Ca3N2.
Use of Neodymium Diiodide in the Synthesis of Organosilicon, ‐Germanium and ‐Tin Compounds
Authors: Balashova Tatyana V. , Kusyaev Dmitry M. , Kulikova Tatyana I. , Kuznetsova Olga N. , Edelmann Frank T. , Gießmann Stephan , Blaurock Steffen , Bochkarev Mikhail N. 
Published: January 2007

AbstractThe reactivity of neodymium diiodide, NdI2 (1), towards organosilicon, ‐germanium and ‐tin halides has been investigated. Compound 1 readily reacts with Me3SiCl in DME to give trimethylsilane (6 %), hexamethyldisilane (4 %) and (Me3Si)2O (19 %). The reaction with Et3SiBr in THF results in formation of Et3SiSiEt3 (17 %) and Et3SiOBun (34 %). Alkylation of Me3SiCl with PrnCl in the presence of 1 in THF affords Me3SiPrn (10 %), Me3SiOBun (52 %) and Me3SiSiMe3 (1 %). The main product identified in the reaction mixture formed upon interaction of 1 with dichlorodimethylsilane Me2SiCl2 in THF is di‐n‐butoxydimethylsilane Me2Si(OBun)2 (54 %) together with minor amounts of Me2Si(OBun)Cl. The reaction of 1 with Me3GeBr under the same conditions produces Me3GeGeMe3 (44 %), Me3GeH (3 %), and Me3GeI (7 %). An analogous set of products was obtained in the reaction with Et3GeBr. Treatment of trimethyltin chloride with 1 causes reduction of the former to tin metal (74 %). Me3SnH (7 %) and hexamethyldistannane (11 %) were identified in the volatile products. The reaction of 1 with Me3SiI provides straightforward access to hepta‐coordinated NdI3(THF)4 (2), the structure of which was determined by X‐ray diffraction.
Synthesis, Crystal Structure and Photoluminescence Property of Zinc(II), Cadmium(II), and Lead(II) Complexes with Bidentate Ligand: 1‐(1‐Imidazolyl)‐4‐(imidazol‐1‐ylmethyl)benzene (IIMB)
Authors: Chu Qian , Kong Ling‐Yan , Okamura Taka‐aki , Kawaguchi Hiroyuki , Meng Wen‐Li , Sun Wei‐Yin , Ueyama Norikazu 
Published: January 2007

AbstractAssembly of bidentate ligand 1‐(1‐imidazolyl)‐4‐(imidazol‐1‐ylmethyl)benzene (IIMB) with varied metal salts of ZnII, CdII and PbII provide three new complexes, [Zn(IIMB)2](ClO4)2·2H2O (1), [Cd(IIMB)2(SCN)2] (2) and [Pb(IIMB)2(SCN)](SCN) (3). Single crystal X‐ray diffraction studies revealed that complexes 1 and 2 display a similar one‐dimensional double stranded chain structure, while complex 3 is a slight distorted rhombohedral grid network with (4,4) topology. The results indicate that the coordination geometry of the metal ion and the counter anion have great impact on the structure of the complexes. In addition, the photoluminescence properties of ligand IIMB and complexes 1–3 were studied in the solid state at room temperature.
Synthesis, Vibrational Spectrum and Structure of the Tetracyanoborate K[B(CN)4]·CH3CN
Authors: Küppers Torsten , Köckerling Martin , Willner Helge 
Published: January 2007

AbstractThe new tetracyanoborate K[B(CN)4]·CH3CN was synthesized by dissolution of the solvent‐free K[B(CN)4] in acetonitrile and subsequent careful crystallization. The crystal structure has been determined by single‐crystal X‐ray diffraction. It crystallizes in the orthorhombic space group P212121 with Z = 4. Some comparisons with related structures are made, and the vibrational spectrum is discussed.
Rhenium Trichloride Dioxide, ReO2Cl3, Preparation and Reactions
Authors: Supeł Joanna , Seppelt Konrad 
Published: January 2007

AbstractA one step synthesis of ReO2Cl3 is reported. ReO2Cl3 reacts with [(C2H5)4P]+Cl−, forming [(C2H5)4P]+[cis–ReO2Cl4]−, a = 1257.0(2), b = 1026.8(2), c = 1277.9(2) pm, β = 106.659(3)°, P21/n. Also an unstable NO+[ReO2Cl4]− can be obtained from NOCl and ReO2Cl3. With the Lewis acid GaCl3 the zwitter ion [ReO2Cl2]+[GaCl4]− is formed. a = 1184.0(3), b = 829.2(2), c = 1100.8(2) pm, β = 112.98(1)°, P21/c.
Synthesis, Crystal Structure and Properties of Ag4CuTeO6
Authors: Klein Wilhelm , Curda Jan , Jansen Martin 
Published: January 2007

AbstractThe new quaternary oxide Ag4CuTeO6 has been obtained by solid state reaction starting from stoichiometric amounts of the binary oxides at elevated temperatures and oxygen pressures. Ag4CuTeO6 crystallises in space group C2/c with a = 11.3021(8), b = 9.6875(6), c = 5.7082(5) Å, β = 99.301(7)°, V = 616.77(8) Å3, Z = 4; the structure refinement was based on 747 independent reflections and resulted in R1 = 3.26 %, wR2 = 7.29 %. The crystal structure consists of isolated TeO6 octahedra which are connected by distorted CuO4 squares, thus forming one‐dimensional, infinite heteropolyanions, extending along the c axis. According to the approximately fcc packing and a distorted octahedral oxygen environment of all the cations, the structure may be regarded a derivative of the NaCl structure type.Ag4CuTeO6 is paramagnetic between 300 K and 7 K, where it develops antiferromagnetic ordering. An evaluation according to the Curie‐Weiss law yielded a magnetic moment of 1.86 μB per copper ion. The electronic conductivity shows a maximum at ∼ 75 K, below a temperature characteristic of a semiconductor, above of a metal.