bluuebunny/crossref_metadata_2025_split huggingface dataset:
Alternating and Non‐Alternating Pd‐Catalyzed Co‐ and Terpolymerization of Carbon Monoxide and Alkenes
Authors: Garcia Suarez Eduardo J. , Godard Cyril , Ruiz Aurora , Claver Carmen 
Published: August 2007

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, please click on HTML or PDF.
Heterogeneous Gold‐Based Catalysis for Green Chemistry: Low‐Temperature CO Oxidation and Propene Oxidation
Authors: Min Byoung Koun , Friend Cynthia M. 
Published: August 2007

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, please click on HTML or PDF.
Biocatalysis in Supercritical Fluids, in Fluorous Solvents, and under Solvent‐Free Conditions
Authors: Hobbs Helen R. , Thomas Neil R. 
Published: August 2007

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, please click on HTML or PDF.
Nucleophilic Aromatic Substitution of Hydrogen as a Tool for Heterocyclic Ring Annulation
Authors: Gulevskaya Anna V. , Pozharskii Alexander F. 
Published: August 2007

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, please click on HTML or PDF.
Synthesis of Arylenephosphamacrocycles Using Tri‐ and Pentavalent Phosphorus Compounds
Authors: Nifantyev E. E. , Slitikov P. V. , Rasadkina E. N. 
Published: August 2007

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, please click on HTML or PDF.
Polycondensation Reaction Using the Tsuji—Trost Reaction, and a New Aspect of the Polycondensation via Controlled Reaction Pathways
Authors: Nomura Nobuyoshi , Tsurugi Ko , Yoshida Nao , Komiyama Susumu , Okada Masahiko 
Published: August 2007

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, please click on HTML or PDF.
Toward the Alignment of Conjugated Polymers into Anisotropically‐Ordered Structure
Authors: Wakabayashi Rie , Kaneko Kenji , Takeuchi Masayuki , Shinkai Seiji 
Published: August 2007

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, please click on HTML or PDF.
Zinc(II) Complexes as Hydrolytic Catalysts of Phosphate Diester Cleavage: From Model Substrates to Nucleic Acids
Authors: Mancin Fabrizio , Tecilla Paolo 
Published: August 2007

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, please click on HTML or PDF.
Combinatorial Synthesis and Directed Evolution Applied to the Production of α‐Helix Forming Antimicrobial Peptide Analogues
Authors: Castro Mariana S. , Cilli Eduardo M. , Fontes Wagner 
Published: August 2007

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, please click on HTML or PDF.
With Asymmetric Hydrogenation Towards a New, Enantioselective Synthesis of Orlistat
Authors: Birk Rolf , Karpf Martin , Puntener Kurt , Scalone Michelangelo , Schwindt Mark , Zutter Ulrich 
Published: August 2007

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, please click on HTML or PDF.
Shall We Dance? How a Multicopper Oxidase Chooses Its Electron Transfer Partner
Authors: Quintanar Liliana , Stoj Christopher , Taylor Alexander B. , Hart P. John , Kosman Daniel J. , Solomon Edward I. 
Published: August 2007

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, please click on HTML or PDF.
Anisomycin and the Reconsolidation Hypothesis
Authors: Rudy Jerry W. , Biedenkapp Joseph C. , Moineau Jeannine , Bolding Kevin 
Published: August 2007

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, please click on HTML or PDF.
Facts and Challenges in the Understanding of the Biosynthesis of Peptaibols by Trichoderma
Authors: Kubicek Christian P. , Komon‐Zelazowska Monika , Sandor Erzsebet , Druzhinina Irina S. 
Published: August 2007

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, please click on HTML or PDF.
The Importance of Cooperative Interactions and a Solid‐State Paradigm to Proteins — What Peptide Chemists Can Learn from Molecular Crystals
Authors: Dannenberg J. J. 
Published: August 2007

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, please click on HTML or PDF.
Physical Characterization of Component Particles Included in Dry Powder Inhalers. Part 1. Strategy Review and Static Characteristics
Authors: Hickey Anthony J. , Mansour Heidi M. , Telko Martin J. , Xu Zhen , Smyth Hugh D. C. , Mulder Tako , McLean Richard , Langridge John , Papadopoulos Dimitris 
Published: August 2007

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, please click on HTML or PDF.
Electrons as a Reagent in Solid‐Phase Organic Synthesis (Eur. J. Org. Chem. 26/2007)
Authors: Mentel Matthias , Breinbauer Rolf 
Published: August 2007

AbstractThe cover picture shows that electrons have become a valuable reagent in Solid‐Phase Organic Synthesis (SPOS). Through the addition of electron‐transfer reagents or catalysts, new transformations are now possible within the environment of polymer‐bound substrates, which significantly expands the toolbox for solid‐phase organic synthesis. The picture depicts how an electron donated by a metal complex cleaves the linker of a substrate to the polymer chain. Details are presented in the Microreview by M. Mentel and R. Breinbauer on pp. 4283 ff.
Parasite Infestation of Antocha (Antocha) bifidaAlexander, 1924 (Diptera: Tipulidae) by Water Mite Larvae (Sperchon plumiferThor, 1902) in the Middle Reaches of the Shinano River, Central Japan
Authors: Hirabayashi Kimio , Fukunaga Yachiyo 
Published: August 2007

AbstractThis is the first report of parasite infestation of Tipulidae by water mite larvae in the middle reaches of a river in Japan. Forty‐four species of adult crane flies were identified. The most abundant species was Antocha (Antocha) bifida Alexander 1924 with 22204 individuals (76.5% were male). Some 2113 individuals (9.5%) were parasitized by water mites, viz., Sperchon plumifer Thor 1902 (maximum: 40/host, mean value: 3.5 ± 2.5/host). 73.1% of S. plumifer larvae were attached to the abdomen. Many S. plumifer larvae parasitized A. bifida adults from late May to early July, but after a small flood, few S. plumifer larvae were collected. Floods have a major impact on both the A. bifida population and on its parasite, the S. plumifer larval population. (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
Particulate Organic Matter (POM) in the Humid and Wet Zones of the Ellegirini River, Kenya
Authors: Mwithali M'Erimba Charles , Leichtfried Maria , Mutuku Mathooko Jude 
Published: August 2007

AbstractField experiments to quantify the amount of particulate organic matter as an energy source for the system were conducted between February 2002 and June 2002 in humid and wet zones of the Ellegirini River in Kenya. The experiment involved collecting ten random samples from each zone. The humid zone held a hundred times more coarse particulate organic matter (CPOM) ash‐free dry mass than the wet zone, where the stream current and other influencing parameters decreased CPOM amount. In conclusion it can be said that these significant differences are the result of different attributes between these two zones. Factors like current velocity, discharge or the absence of CPOM holding structures are responsible for low CPOM in the wet zone. (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
Habitat Complexity and Invertebrates in Selected Alpine Springs (Schütt, Carinthia, Austria)
Authors: Staudacher Karin , Füreder Leopold 
Published: August 2007

AbstractThe invertebrate fauna from eight selected springs of the landslide area of Schütt (Carinthia, Austria) with contrasting environmental factors was investigated. The role of habitat structure on the community composition was studied with a particular focus on the spring‐dwelling animals colonizing the aquatic and the adjacent aquatic‐terrestrial transition zones. The crenocoenosis was predominantly composed of Chironomidae, Plecoptera, Trichoptera, Mollusca and Ostracoda and the number of spring‐specialists was high. Habitat complexity, variable microhabitat composition and the concomitance of lotic and lentic areas in the eucrenal zone furthered a high species diversity and abundance. Even the aquatic‐terrestrial transition zone was inhabited by high numbers of crenobionts and crenophiles. Moreover, the connectivity of aquatic and terrestrial habitats positively affected the structural and functional organisation of invertebrate assemblages in the spring biotopes. (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
Hyporheic Biofilm Particulate Organic Carbon in a Small Lowland Stream (Sitka, Czech Republic): Structure and Distribution
Authors: Koutný Jan , Rulík Martin 
Published: August 2007

AbstractBacterial abundance, biomass and particulate organic carbon (POC) were determined in the hyporheic sediments <1 mm. The fine fraction (<0.063 mm) and coarse fraction (0.063–1 mm) were analysed separately. The coarse fraction was dominant (95.5%) and its POC content contributed the major proportion (on average 65%) of the total POC (TPOC). The changes in spatial distribution of TPOC were due to the variation in POC in the fine fraction. Bacteria in the fine fraction contributed on average to 62.9% of the total bacterial abundance and to 51.7% of the total bacterial biomass, despite the fact that the fine fraction represented only ∼4.5% of the sediment <1 mm. Our results stress the importance of the fine sediment fraction for bacteria as well as for spatio‐temporal distribution of biofilm POC. (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
The Ecological Effect of Drought on the Macroinvertebrate Fauna of a Small Intermittent Stream – An Example from the Czech Republic
Authors: Řezníčková Pavla , Pařil Petr , Zahrádková Světlana 
Published: August 2007

AbstractThe impact of an unstable hydrological regime on macroinvertebrates in an intermittent stream (with periodic summer droughts in particular stretches) was investigated in two successive years with differing climatic conditions. Ten series of macroinvertebrate samples were taken from two sampling sites between April 2002 and October 2003. Total abundance, taxa richness, main faunal groups, and life strategies were assessed in order to describe the changes in the macroinvertebrate assemblages. Periodic dry periods caused a decrease in macroinvertebrate density in the intermittent stretch, whereas they had no negative influence on number of taxa. Before the drought, the density of permanent fauna decreased and the number of r‐strategists rose and stayed at a high level in first samples in the after‐drought period. (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
Method for identifying the surface wave frequency band‐gap of EBG structures
Authors: Xu Huiliang , Lv Yueguang , Luo Xiangang , Du Chunlei 
Published: August 2007

AbstractIn this letter, a method, patch antenna and microstrip method (PAMM), for identifying the surface‐wave band‐gap of electromagnetic band‐gap (EBG) structures is introduced. The key idea of PAMM is that a patch antenna, fed by a microstrip line, is served for a radiator and an open‐end microstrip line with characteristic impedance of 50 Ω, is employed as a detector for the electromagnetic field along the substrate. Several rows of EBG structures are inserted between the detector and the radiator. The band‐gap range of surface‐wave can be identified by measuring the transmission through the detector and the radiator. Simulation results show that the transmission coefficient with EBG presence is lower than that of case without EBG absence above 10 dB. On the other hand, the gain of the antenna increases 1.9 dB when four rows of EBG are present. The results verify that the propagation of surface‐wave is suppressed and the method is effective. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 2668–2672, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22812
A dual band CMOS complementary Colpitts voltage controlled oscillator
Authors: Jang Sheng‐Lyang , Lee Shao‐Hua , Chiu Chun‐Yuan , Lee Chien‐Feng 
Published: August 2007

AbstractA new fully integrated, dual‐band CMOS voltage controlled oscillator (VCO) is presented. The VCO is composed of two complementary Colpitts VCOs and is implemented in 0.18‐μm CMOS technology with 2‐V supply voltage. The circuit allows the VCO to operate at two resonant frequencies with a common LC tank. This VCO is configured with 2.4‐ and 5.2‐GHz frequency bands with differential outputs. The dual‐band VCO operates at 2.39–2.68 GHz and 4.84–5.58 GHz. The phase noises of the VCO operating at 2.4 and 5.13 GHz are −121.11 and −111.76 dBc/Hz at 1‐MHz offset, respectively, while the VCO draws 7.45/5.92 mA and 14.9/11.84 mW consumption at high/low frequency band from a 2‐V supply. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 2634–2637, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22814
Loose GMRES method for efficient solution of EFIE in the MLFMA context
Authors: Ding D. Z. , Rui P. L. , Chen R. S. , Fan Z. H. 
Published: August 2007

AbstractThe loose generalized minimum residual method (LGMRES) accelerated by multilevel fast multipole algorithm (MLFMA) is discussed for solving large dense linear systems that arise in the electric field integral equation (EFIE) formulation of electromagnetic scattering problems. The LGMRES is used to improve convergence by relieving restarting effect in the convensional GMRES iterative method, and the MLFMA is used to speed up the matrix‐vector product operations. As a result, nearly eight times convergence improvement is achieved for electromagnetic scattering (EM) from three‐dimensional (3D) conducting bodies. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 2661–2665, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22816
Study on frequency splitting based on distributed Bragg reflector fiber laser
Authors: Jian‐Hua Luo , Bo Liu , Wei‐Hua Zhang , Shu‐Zhong Yuan 
Published: August 2007

AbstractIn this paper, we analyzed the frequency splitting phenomena when distributed Bragg reflector (DBR) fiber laser was influenced by lateral pressure. We gave the relationship of the frequency interval and the lateral pressure. This frequency splitting phenomena is based on Intracavity birefringent effects which are modulated by lateral pressure. So, this frequency splitting phenomena could be used in sensing pressure in the future. The pressure sensor which is based on the frequency splitting had more merits such as simple structure and frequency readable. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 2628–2630, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22818
Stacked helix monopole antenna with vertical lines for broadband operation
Authors: Jung Jinwoo , Lee Hyeonjin , Lim Yeongseog 
Published: August 2007

AbstractA novel stacked helix antenna with vertical lines is presented for broadband operation, and the impedance and radiation characteristics of the antenna are investigated. The proposed antenna achieved a bandwidth of approximately 34.2% with an S11 < −10 dB, which covers the DCS, PCS, UMTS, and WiBro bands. Omnidirectional radiation patterns are obtained for frequencies across the operating bands. Moreover, in discussion of the experimental results of the constructed prototype, the electrical characteristics of the proposed antenna appear to be attractive for mobile terminals and repeater applications. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 2739–2742, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22821
Design of compact dual‐band bandpass filters using λ/2 and combined λ/4 stepped‐impedance resonators
Authors: Lee Ching‐Her , Hsieh Yi‐Huan , Ho Min‐Hua 
Published: August 2007

AbstractThis paper presents a compact dual‐band bandpass filter (BPF) that consists of a pair of L‐shape half‐wavelength (λ/2) stepped‐impedance resonators (SIRs) and an inverted Z‐shape resonator. The latter is actually a combined structure of two λ/4 SIRs along with a magnetic coupling in between and hence designed to reduce the circuit size. Cross‐coupled SIR configuration and 0° tapped‐feed structures are adopted to introduce attenuation poles around the passband edges for selectivity improvement. A wider −20‐dB upper stopband is achieved by properly separating the third resonant frequencies of the SIRs of different types. The newly designed dual‐band BPF was verified by circuit implementation, and a very good agreement between the simulated and measured results was observed. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 2703–2706, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22823
Fast and accurate analysis for the directivity of circular‐shape antennas using optimal neural networks
Authors: Silva P. H. da F. , Passos M. G. , d'Assunção A. G. 
Published: August 2007

AbstractThis article describes the application of the optimal transfer function neural network methodology for fast and accurate function approximation of Q‐integrals, that appears in directivity expressions of circular‐shape antennas, such as loop, microstrip patch, and aperture in an infinite ground plane. These directivity expressions were revisited and linked in terms of Q‐type power‐radiation integrals. For each directivity approach using optimal neural networks–closed‐form expressions, series of Bessel functions, and adaptive Lobatto integration, the numerical results are presented and discussed in terms of accuracy and computational cost. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 2721–2726, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22839
Compact band‐notched ultra‐wideband printed antenna
Authors: Ding Yi , Wang Guang‐Ming , Liang Jian‐Gang 
Published: August 2007

AbstractA novel and compact ultra‐wideband (UWB) printed monopole antenna with extended band‐notched designs is presented. The antenna with a total size of 20 mm × 35 mm operates in a band from 3 to over 11 GHz (VSWR ≤ 2), and shows omnidirectional radiation with a low cross‐polarization in the range of the operated band. Measured results indicate that the antenna presents a notched‐band from 5.1 to 6 GHz for VSWR ≥ 3:1, which covers the wireless local area network (WLAN) band. The notched‐band is produced by an embedded resonant cell (ERC). Experimental results show that the band‐notched function can be controlled by adjusting the length of the ERC and area of the slot. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 2686–2689, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22842
0.35‐μm SiGe BiCMOS variable‐gain power amplifier for WiMAX transmitters
Authors: Liao Hsien‐Yuan , Chen Kuan‐Yu , Deng Joseph D.‐S. , Chiou Hwann‐Kaeo 
Published: August 2007

AbstractA 0.35‐μm SiGe BiCMOS variable‐gain power amplifier for WiMAX transmitters is presented. A voltage‐controlled variable resistor is used to control the gain of the linear amplifier. An open‐collector adaptive bias is utilized to obtain high linearity and efficiency. The measured power amplifier achieves a power gain of 22.2 dB, an output power of 20.6 dBm, and a power‐added efficiency of 24.4% with 10‐dB tuning range of linear gain. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 2750–2753, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22851
Towards dispersion characteristics for a new unconventional metal‐clad optical waveguide
Authors: Shahi A. K. , Singh Vivek , Ojha S. P. 
Published: August 2007

AbstractUsing Goell's point matching method under weak guidance condition, the modal characteristic equations of a curvilinear triangular cored optical waveguide are obtained in three cases. In one case the proposed waveguide has on its one side a conducting material and other two sides are bounded by dielectric material. We describe it as dielectric‐dielectric‐metal (DDM) waveguide. In other case we consider both the boundaries conducting. We call this as metal‐metal‐dielectric (MMD) waveguide. Finally, we consider all the boundaries conducting. We call this as a metal‐metal‐metal (MMM) waveguide. Results obtained in all three cases are compared. It is found that for a given V‐value the DDM waveguide will support more modes than MMD and MMM waveguides. Therefore, the MMD or MMM waveguides may be used as a mode filter. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 2709–2713, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22854
A 22 GHz cascode CMOS VCO using frequency doubler
Authors: Park Bonghyuk , Lee Seungsik , Hong Songcheol , Choi Sangsung 
Published: August 2007

AbstractThis paper presents a fully integrated cascode CMOS LC VCO using frequency doubler for oscillating at 22 GHz band. A symmetrical cascode coupling topology is implemented with negative conductance scheme for increasing the quality factor and output swing. Therefore, this architecture improves the phase noise characteristic in 0.18 μm CMOS technology. In order to oscillate at 22 GHz band the frequency doubler (clipper) is used. The measured phase noise is −102.4 dBc/Hz at the 1 MHz offset frequency. The tuning range of 1.32 GHz is obtained with the control voltage from 0.5 to 1.6 V. The current consumption of the VCO and the frequency doubler has 11.8 mA from 1.8 V supply. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 2870–2873, 2007; Published online in Wiley InterScience (www.interscience.wiley.com).DOI 10.1002/mop.22857
Analog predistortion power amplifiers using IMD sweet spots for WCDMA applications
Authors: Lee Yong‐Sub , Lee Mun‐Woo , Jeong Yoon‐Ha 
Published: August 2007

AbstractAn analog predistortion power amplifier (PA) using intermodulation distortion (IMD) sweet spots for linearity improvement in wide‐band code division multiple access (WCDMA) applications is represented. A third‐order predistorter is used to cancel the IM3 components when the IM5 components are significantly reduced by the IMD5 sweet spots of the PA. For experimental validation, a 30‐W PEP LDMOSFET PA is implemented and tested for two‐tone and 4‐carrier WCDMA signals at 2.14 GHz. The measured results show that the notable linearity improvement is obtained over a whole output power range. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 2838–2841, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22859