bluuebunny/crossref_metadata_2025_split huggingface dataset:
Coupling‐fed circular‐patch antenna for on‐body communication system
Authors: Ma Da , Zhang Wenxun X. 
Published: August 2009

AbstractA new scheme of antenna for wireless body area networks is proposed. A coupling‐fed circular‐patch antenna with TM01 mode is designed, simulated, and tested, which radiates omni‐directional pattern along the body surface and has linear polarization normal to the surface. Both simulated and measured results show this antenna satisfies the expected 9% bandwidth (5.725–5.875 GHz) for return‐loss ≤ −10 dB, and it is suitable for on‐body communication application. © 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 51: 2623–2627, 2009; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24712
0.13‐μM CMOS Q‐band leveled‐LO subharmonic mixer with injection‐locked frequency‐divider quadrature generator
Authors: Su Jen‐Yi , Meng Chinchun , Wu Po‐Yi , Huang Guo‐Wei 
Published: August 2009

AbstractIn this article, a 40‐GHz subharmonic Gilbert down‐conversion mixer with an accurate quadrature local oscillator (LO) input is demonstrated using a standard 0.13‐μm CMOS technology. The quadrature‐output frequency divider is realized by injection‐locked oscillators and is used at the LO port to replace conventional RC‐CR polyphase filters at higher frequencies. Furthermore, the proper Marchand balun at an RF stage is suitable for the standard Si‐based process to generate precisely balanced signals despite the substrate loss. The measured conversion gain is 4 dB at 40 GHz. The IP1dB and IIP3 of −7 dBm and 2 dBm, respectively, are achieved. The measured 3‐dB RF bandwidth is very broad and about 12‐GHz bandwidth when the 10‐MHz IF frequency is fixed. The die size is about 1 mm × 1 mm. © 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 51: 2663–2665, 2009; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24714
Resonant homogenization of a dielectric metamaterial
Authors: Felbacq D. , Guizal B. , Bouchitté G. , Bourel C. 
Published: August 2009

AbstractWe investigate numerically and theoretically the homogeneous properties of a metamaterial made of nanorods with a high dielectric constant. The rods have inner resonances leading to an effective magnetic behavior. The influence of various parameters, such as the wavelength, the angle of incidence, and the filling ratio is quantified by means of rigorous numerical computations. © 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 51: 2695–2701, 2009; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24717
Photonic bandgap modification in hollow optical fibers integrated with single walled carbon nanotubes
Authors: Pisco Marco , Consales Marco , Penza Michele , Aversa Patrizia , Giordano Michele , Cutolo Antonello , Cusano Andrea 
Published: August 2009

AbstractSingle‐walled carbon nanotubes (SWCNTs) have been infiltrated within the holes of hollow‐core optical fibers (HOFs) by Langmuir‐Blodgett method in order to develop new in‐fiber active and passive optoelectronic devices. Far field transmission characterizations demonstrated HOF's holes successful filling and the SWCNTs' capability to modify the guiding properties of HOFs. © 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 51: 2729–2732, 2009; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24725
An adaptive spectroellipsometer for ecological monitoring
Authors: Mkrtchyan F. A. , Krapivin V. F. , Kovalev V. I. , Klimov V. V. 
Published: August 2009

AbstractIn this article, the creation of multichannel polarization optical instrumentation and the use of spectroellipsometric technology for the real‐time ecological control of aquatic environment is discussed. It was shown that spectroellipsometric devices give high precision of measurements of water quality characteristics. Spectroellipsometric multichannel measurements in an aquatic environment are conducted by the algorithms for the recognition and identification of pollutants. Some results of an adaptive spectroellipsometer applications are given. © 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 51: 2792–2795, 2009; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24730
Miniaturized high impedance surfaces with angular stability by using zirconium tin titanate substrates and convoluted FSS elements
Authors: Genovesi S. , Costa F. , Cioni B. , Miceli V. , Annino G. , Gallone G. , Levita G. , Lazzeri A. , Monorchio A. , Manara G. 
Published: August 2009

AbstractA new approach for obtaining metasurfaces realized by using frequency selective surfaces with reduced periodicity printed on a new class of high dielectric constant materials is presented. The proposed engineered ad‐hoc materials and the innovative electromagnetic design provide an improvement of the overall device in terms of compactness and angular stability, as shown by the use of our novel band vs. incidence angles chart. © 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 51: 2753–2758, 2009; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24731
Conventional and microwave curing process of epoxy systems: Kinetic analysis and characterization
Authors: Saccone Guido , Amendola Eugenio , Acierno Domenico 
Published: August 2009

AbstractAn investigation about the kinetic of the curing process of an epoxy resin and its mechanical characterization has been performed. An assessment about the existence of the “specific microwave effect” has been carried out and the possible improvement of the microwave absorption of the epoxy resins by the addition of a suscepting material has been studied. © 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 51: 2777–2783, 2009; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24735
Numerical and experimental investigation of basic properties of wire medium‐based shortened horn antennas
Authors: Hrabar Silvio , Bonefacic Davor , Muha Damir 
Published: August 2009

AbstractRecent numerical study predicted a phenomenon of gain increase of a shortened horn antenna by embedding a wire medium‐based slab. Here, we report an experimental verification of this idea by the development of two shortened horn antennas that operate in 10 GHz band: the horn with embedded single‐wire ENZ slab and the horn with embedded double‐wire ENZ slab. These two horn antennas had lengths of 52% and 33% of the length of the optimal horn, respectively. Measured gain was found to be very similar to the gain of the full‐length optimal horn (within 0.1 dB), but in a narrow band (5–12%). In addition, we present numerical results that show that a Drude model is a good starting point for the initial design of a shortened horn, while the required antenna characteristics should be achieved by an additional numerical optimization. © 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 51: 2748–2753, 2009; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24736
A stub‐loaded SIR filter with an ultra‐wide rejection band
Authors: Wang Huan , Chu Qing‐Xin 
Published: August 2009

AbstractA stub‐loaded stepped‐impedance resonator (SIR) filter with an ultra‐wide upper stopband is proposed. For a 20‐dB rejection level, by properly choosing the number and lengths of the stubs, the second, third, and fourth resonances of the SIR filter are pushed to left and the seventh resonance is pushed to right, and all of them show low S21 levels due to the improper external coupling values, while the fifth and sixth resonances are greatly suppressed by a transmission zero. The measured 20‐dB rejection band of a three‐stub SIR filter achieves 17.4 times the designed frequency. © 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 51: 2660–2662, 2009; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24740
A high‐pass filter based on modified double‐sided parallel‐strip lines
Authors: Misan S. , Haviv R. , Ackerman D. , Matzner H. , Haridim M. 
Published: August 2009

AbstractWe present a 6th order pseudo high‐pass filter implemented by a modified version of the double‐sided parallel‐strip line, in which the width of the dielectric substrate is identical to the width of the conducting strips. The filter, the associated compact circular balun, and the SMA connectors are designed and simulated by means of the CST Microwave Studio, and implemented on a Rogers 4003C substrate. The experimental results are in good agreement with the simulations, and good scattering properties are achieved. © 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 51: 2691–2694, 2009; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24741
A heuristic two‐phase solution approach for the multi‐objective dial‐a‐ride problem
Authors: Parragh Sophie N. , Doerner Karl F. , Hartl Richard F. , Gandibleux Xavier 
Published: August 2009

AbstractIn this article, we develop a heuristic two‐phase solution procedure for the dial‐a‐ride problem with two objectives. Besides the minimum cost objective a client centered objective has been defined. Phase one consists of an iterated variable neighborhood search‐based heuristic, generating approximate weighted sum solutions; phase two is a path relinking module, computing additional efficient solutions. Results for two sets of benchmark instances are reported. For the smaller instances, exact efficient sets are generated by means of the ϵ‐constraint method. Comparison shows that the proposed two‐phase method is able to generate high‐quality approximations of the true Pareto frontier. © 2009 Wiley Periodicals, Inc. NETWORKS, 2009
Design of pheromone releasing nanofibers for plant protection
Authors: Hellmann Christoph , Greiner Andreas , Wendorff Joachim H. 
Published: August 2009

AbstractPlants tend to attract diseases quite similar to human beings. Pesticides tend to be used to control such diseases. An alternative route, at least as far as damages from insects is concerned, envisions the application of pheromones. These cause a disorientation of male insects so that they are no longer able to locate the females, which finally gives rise to suppression of reproduction. The approach considered in this paper is based on the release of pheromones from polymer carriers, in particular, from nanofibers webs as obtained by electrospinning. These may be distributed across the field quite similar to spider webs. The pheromones are required to be incorporated in sufficiently high concentrations in the nanofibers via electrospinning and to be released from the nanofibers for a sufficiently long time expanding over several weeks to months. Polyamide 6 as well as cellulose acetate was used as a polymer carrier in the investigations reported in this contribution. Studies reveal that fluid pheromones can, in fact, be incorporated in the nanofibers to more than 33 wt%. They may undergo a nanoscalar phase separation within the fibers during electrospinning. Furthermore, thermogravimetric studies revealed viain vitrorelease studies that the pheromones are released from the nanofibers in a nearly linear fashion over a period covering many weeks. Copyright © 2009 John Wiley & Sons, Ltd.
Ginkgo‐Extrakt bei Personen mit nachlassender mentaler Leistungsfähigkeit. Studienergebnisse differenziert betrachten
Authors: Kaschel Reiner 
Published: August 2009

AbstractGinkgo biloba ist eine der am besten dokumentierten Arzneipflanzen. Ihre größte Verbreitung haben Ginkgo‐Extrakte zur Verbesserung nachlassender Gedächtnisleistungen gefunden. Standardisierte Spezialextrakte wie EGb 761® sind als Arzneimittel zugelassen zur symptomatischen Behandlung von hirnorganisch bedingten geistigen Leistungseinbußen im Rahmen eines therapeutischen Gesamtkonzepts bei dementiellem Syndrom mit der Leitsymptomatik: Gedächtnis‐ und Konzentrationsstörungen, depressive Verstimmung, Schwindel, Ohrensausen, Kopfschmerzen.Indes weisen zahlreiche Studien darauf hin, dass der Extrakt auch bei Personen ohne jede Hirnleistungsstörung günstige Effekte auf die kognitive Leistung und die emotionale Belastbarkeit hat. Dennoch erscheint eine umfassende Zusammenschau der bisherigen Studienergebnisse zu Ginkgo zunächst verwirrend und widersprüchlich. Es lässt sich jedoch zeigen, dass dies nicht zuletzt auf methodische Probleme einzelner Studien zurückgeht, die sich an der Anwendung und Auswertung psychometrischer Tests festmachen lassen: Häufig hatte Ginkgo keine adäquate Chance, seine Wirksamkeit unter Beweis zu stellen. Das zeigt die hier referierte aktuelle Übersicht zu Ginkgo, welche Ergebnisse von objektiven psychometrischen Test aus 28 Studien zusammenfasst. Darüber hinaus zeigt die Analyse, dass Ginkgo‐Extrakt sehr spezifische Effekte auf kognitive Funktionen hat, die über die Verbesserung allgemeiner Gedächtnisleistungen hinausgehen: Komplexe Aufmerksamkeits‐ und Intelligenzleistungen werden gefördert, und die Handlungssteuerung verbesserte sich deutlicher als unter Placebo. Eine neuere Studie von Grass‐Kapanke und Mitarbeitern fand bei Personen mittleren Alters mit sehr leichten kognitiven Einbußen (vMCI) Verbesserungen in eben solchen alltagsrelevanten Gedächtnis‐ und Aufmerksamkeits‐Tests. Obligate Voraussetzungen einer jeden pharmakologischen Intervention bei gesunden Menschen sind die Sicherheit und gute Verträglichkeit. Diese Conditio sine qua non erfüllt EGb 761®. Die Behandlung mit Dosen bis 240 mg täglich war sicher und gut verträglich.
Oral applizierbare Nukleinsäuren gegen Entzündungen
Authors: Winckler Thomas 
Published: August 2009

AbstractDer Nobelpreis für Physiologie oder Medizin ging im Jahr 2006 an die Forscher Andrew Z. Fire und Craig C. Mello für Ihre Entdeckung des so genannten “gene silencing” mit kleinen RNA‐Molekülen (siRNAs). Kann man diese fragilen siRNAs zu therapeutischen Zwecken oral applizieren?
Synthesis of biocompatible and biodegradable block copolymers of polyvinyl alcohol‐block‐poly(ε‐caprolactone) using metal‐free living cationic polymerization
Authors: Zaleska Izabela Magdalena , Kitagawa Masaru , Sugihara Shinji , Ikeda Isao 
Published: August 2009

AbstractApplications of metal‐free living cationic polymerization of vinyl ethers using HCl·Et2O are reported. Product of poly(vinyl ether)s possessing functional end groups such as hydroxyethyl groups with predicted molecular weights was used as a macroinitiator in activated monomer cationic polymerization of ε‐caprolactone (CL) with HCl·Et2O as a ring‐opening polymerization. This combination method is a metal‐free polymerization using HCl·Et2O. The formation of poly(isobutyl vinyl ether)‐b‐poly(ε‐caprolactone) (PIBVE‐b‐PCL) and poly(tert‐butyl vinyl ether)‐b‐poly(ε‐caprolactone) (PTBVE‐b‐PCL) from two vinyl ethers and CL was successful. Therefore, we synthesized novel amphiphilic, biocompatible, and biodegradable block copolymers comprised polyvinyl alcohol and PCL, namely PVA‐b‐PCL by transformation of acid hydrolysis of tert‐butoxy moiety of PTBVE in PTBVE‐b‐PCL. The synthesized copolymers showed well‐defined structure and narrow molecular weight distribution. The structure of resulting block copolymers was confirmed by 1H NMR, size exclusion chromatography, and differential scanning calorimetry. © 2009 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 47: 5169–5179, 2009
Identification of glial‐cell‐line‐derived neurotrophic factor‐regulated proteins of striatum in mouse model of Parkinson disease
Authors: Hong Zhen , Liu Jun , Xia Li , Pan Jing , Xiao Qin , Lu Guoqiang , Liang Liang , Chen Sheng‐Di 
Published: August 2009

AbstractGlial‐cell‐line‐derived neurotrophic factor (GDNF) is a potent survival factor for dopaminergic neurons, and hence serves as a therapeutic candidate for the treatment of Parkinson's disease. However, despite the potential clinical and physiological importance of GDNF, its mechanism of action is unclear. Therefore, we employed a state‐of‐the‐art proteomic technique, DIGE, along with MS and a bioinformatics tool called Database for Annotation, Visualization and Integrated Discovery (DAVID), to profile proteome changes in the parkinsonian mouse striatum after GDNF challenge. Forty‐six unique differentially expressed proteins were successfully identified, which were found either up‐regulated and/or down‐regulated at the two time points 4 and 72 h compared with the control. Proteins involved in cell differentiation and system development formed the largest part of the proteins regulated under GDNF. Furthermore, the aberrant expression of HSPs and mitochondria‐associated proteins were noticeable. Moreover, mitochondrial stress 70 protein and heat shock cognate 71 kDa protein, whose relative levels increased significantly in GDNF‐treated striatum, were further evaluated with Western blot and RT‐PCR, demonstrating a good agreement with quantitative proteomic data. These data will provide some clues for understanding the mechanisms by which GDNF promotes the survival of dopaminergic neurons.
Sources of urinary proteins and their analysis by urinary proteomics for the detection of biomarkers of disease
Authors: Julian Bruce A. , Suzuki Hitoshi , Suzuki Yusuke , Tomino Yasuhiko , Spasovski Goce , Novak Jan 
Published: August 2009

AbstractRenal disorders account for a substantial fraction of the budget for health care in many countries. Proteinuria is a frequent manifestation in afflicted patients, but the origin of the proteins varies based on the nature of the disorder. The emerging field of urinary proteomics has the potential to replace kidney biopsy as the diagnostic procedure of choice for patients with some glomerular forms of renal disease. To fully realize this potential, it is vital to understand the basis for the urinary excretion of protein in physiological and pathological conditions. In this review, we discuss the structure of the nephron, the functional unit of the kidney, and the process by which proteins/peptides enter the urine. We discuss several aspects of proteinuria that impact the proteomic analysis of urine of patients with renal diseases.
Fibroblast protein profile analysis highlights the role of oxidative stress and vitamin K recycling in the pathogenesis of pseudoxanthoma elasticum
Authors: Boraldi Federica , Annovi Giulia , Guerra Deanna , Paolinelli DeVincenzi Chiara , Garcia‐Fernandez Maria Inmaculada , Panico Fulvio , De Santis Giorgio , Tiozzo Roberta , Ronchetti Ivonne , Quaglino Daniela 
Published: August 2009

AbstractPseudoxanthoma elasticum (PXE) is a genetic disorder associated to mutations in the ABCC6 gene; however, the pathogenetic mechanisms leading to elastic fibre calcifications and to clinical manifestations are still unknown. Dermal fibroblasts, directly involved in the production of the extracellular milieu, have been isolated from healthy subjects and from patients affected by PXE, cultured in vitro and characterized for their ability to produce reactive oxygen species, for structural and functional properties of their cell membranes, for changes in their protein profile. Data demonstrate that oxidative stress has profound and endurable consequences on PXE fibroblast phenotype being responsible for: reduced levels of global DNA methylation, increased amount of carbonylated proteins and of lipid peroxidation products, altered structural properties of cell membranes, modified protein expression. Data shed new light on the pathogenetic pathways in PXE, by identifying a network of proteins affecting elastic fibre calcification through inefficient vitamin K recycling, and highlight the role of differentially expressed proteins as targets for validating the efficacy of future therapeutic strategies aiming to delay and/or revert the pathologic phenotype of PXE fibroblasts. Moreover, data open new perspectives for investigating PXE‐like phenotypes in the absence of ABCC6 mutations.
Predictive value of PCA3 in urinary sediments in determining clinico‐pathological characteristics of prostate cancer
Authors: Hessels Daphne , van Gils Martijn P.M.Q. , van Hooij Onno , Jannink Sander A. , Witjes J. Alfred , Verhaegh Gerald W. , Schalken Jack A. 
Published: August 2009

AbstractPURPOSEPCA3 urine tests have shown to improve the specificity in prostate cancer (PCa) diagnosis, and have thus the potential to reduce the number of unnecessary prostate biopsies and to predict repeat biopsy outcomes. In this study, PCA3 was correlated with clinical stage, biopsy Gleason score (GS), radical prostatectomy GS, tumor volume, and pathological stage to assess its potential as predictor of PCa aggressiveness.METHODSIn this study, 351 men admitted for prostate biopsies based on serum PSA levels >3 ng/ml, an abnormal DRE, and/or a family history of PCa were included. Post‐DRE urinary sediments from 336 men were tested using a transcription‐mediated amplification‐based PCA3 test, and assay results were correlated with clinical stage and biopsy GS. In a sub‐cohort of 70 men who underwent radical prostatectomy, the PCA3 values were correlated to their radical prostatectomy GS, tumor volume, and pathological stage.RESULTSIn this patient cohort we could not find a correlation between clinical stage, biopsy GS, radical prostatectomy GS, tumor volume, and pathological stage.CONCLUSIONSThe predictive value of PCA3 for PCa aggressiveness features as reported in earlier studies cannot be confirmed in our study. Experimental differences (urine sediments vs. whole urine) and cohort may explain this. The exact place of PCA3 as prognostic test for PCa remains the subject of investigation. Prostate 70: 10–16, 2010. © 2009 Wiley‐Liss, Inc.
Low‐frequency capacitance–voltage study of hydrogen interaction with Pt–AlGaN/GaN Schottky barrier diodes
Authors: Irokawa Yoshihiro , Matsuki Nobuyuki , Sumiya Masatomo , Sakuma Yoshiki , Sekiguchi Takashi , Chikyo Toyohiro , Sumida Yasunobu , Nakano Yoshitaka 
Published: August 2009

AbstractWe have investigated the interaction of hydrogen with Pt–AlGaN/GaN Schottky barrier diodes (SBDs) using a low‐frequency capacitance–voltage (C –V) technique. At a frequency of 1 kHz, the C–V curve in hydrogen shifts toward negative bias values as compared with that in nitrogen. As the frequency decreases from 1 kHz to 1 Hz, the capacitance in hydrogen significantly increases and an oscillation of the capacitance is observed. These C–V characteristics are quite anomalous and have not been reported yet, suggesting the formation of an interfacial polarization which could be attributable to hydrogen‐related dipoles. The oscillation of the capacitance may be related to the alignment of the dipoles. (© 2009 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
Growth temperature and plasma power effects on N incorporation in InSbN grown by molecular beam epitaxy
Authors: Lim K. P. , Pham H. T. , Yoon S. F. , Markwitz A. , Yakovlev N. 
Published: August 2009

AbstractDilute nitride InSbN alloys have been grown using radio frequency plasma‐assisted molecular beam epitaxy. The effects of low growth temperature (270–330 °C) and nitrogen plasma power (150–180 W) on the N incorporation were studied. From the X‐ray diffraction (XRD), secondary ion mass spectroscopy and the nuclear reaction analysis (14N(d,p5)15N), the highest ratio of substitutional NSb over the undesired interstitial N is yielded at the lower limit of 270 °C. Like NSb, a large amount of interstitial N–N also contribute to lattice contraction. Increasing the plasma power (180 W) results in a significant increase in interstitial N in [011] direction. (© 2009 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)