bluuebunny/crossref_metadata_2025_split huggingface dataset:
Increasing directionality of planar ultra‐wideband antennas
Authors: Locatelli Andrea , Modotto Daniele , Maria Pigozzo Filippo , Boscolo Stefano , Autizi Elena , De Angelis Costantino , Capobianco Antonio‐Daniele , Midrio Michele 
Published: November 2009

AbstractA directional planar ultra‐wideband antenna is described and characterized through numerical and experimental results. The antenna is composed of a disc monopole fed by a 50‐Ω microstrip line with an L‐shaped ground plane. Simulations and measurements performed in an anechoic chamber demonstrate that the structured ground plane behaves as a corner reflector, which allows an increase of directionality with respect to conventional monopoles. © 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52: 78–82, 2010; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24849
A ring monopole antenna for UWB application
Authors: Xiao Jin‐Xiang , Wang Mei‐Fang , Li Guo‐Jian 
Published: November 2009

AbstractA simple and compact microstrip‐fed ultra wideband printed monopole antenna is proposed and investigated. The proposed antenna is composed of a circular‐ring fed by a microstrip line and a multistep ground. The measured bandwidth of voltage‐standing wave ratio < 2 is from 3.0 to 12.0 GHz. The transfer functions of antenna systems are given experimentally. The parametric studies are performed numerically in this article. © 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52: 179–182, 2010; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24857
A novel planar three‐way triband power divider
Authors: Wang Xin‐Huai , Chen Xiaoqun , Shi Xiao‐Wei , Wei Feng , Bai Yanfu 
Published: November 2009

AbstractA novel planar three‐way triple‐band power divider is proposed in this article. The circuit is composed of three sections of three transmission lines and planar isolation resistors, which can provide high isolation and good amplitude balance simultaneously at three arbitrary frequencies. The structure of the power divider and the formulas used to determine the design parameters has been given. To verify the validity, a proposed power divider was fabricated and measured at 900, 1800, and 2400 MHz. Both theoretical and simulated results are presented, which are in good agreement with the measured results. © 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52: 182–184, 2010; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24858
Improved selectivity compact band‐stop filter with Gosper fractal‐shaped defected ground structures
Authors: Smierzchalski M. , Kurgan P. , Kitlinski M. 
Published: November 2009

AbstractA novel band‐stop filter using Gosper fractal‐shaped defected ground structures has been designed and manufactured. The improvement in the filter selectivity has been achieved by introducing a multiresonance fractal‐shaped defect leading to a higher filter order, simultaneously maintaining its compact size. The experimental results prove the validity of proposed solution and its utility in novel miniaturized and severe requirement filter applications. © 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52: 227–229, 2010; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24869
Reduced size bow‐tie slot monopole antenna for land mine detection
Authors: Badhai Ritesh Kumar , Gupta Nisha 
Published: November 2009

AbstractThis article presents the design of a printed bow–tie slot monopole antenna for landmine detection. The characteristics of antenna are obtained for coplanar waveguide feed bow–tie slot monopole configuration for several cases. The proposed antenna exhibits a bandwidth of 340 MHz with a reduced area of around 76% with respect to rectangular and circular patch antennas. Finally, a prototype model of reduced size bow–tie slot monopole antenna is fabricated and tested for Ground penetration radar application. The experimental results are compared with simulation results and are found to be in good agreement. © 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52: 122–125, 2010; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24872
New wavelength division multiplexing bands generated by using a Gaussian pulse in a microring resonator system
Authors: Dunmeekaew U. , Pornsuwancharoen N. , Yupapin P. P. 
Published: November 2009

AbstractA novel system that can be used to generate the new optical communication bandwidths (wavelength bands) using a Gaussian pulse propagating within a nonlinear microring resonator system is discussed. By using the wide range of the Gaussian input pulses, for instance, when the input pulses of the common lasers with center wavelengths from 400 to 1400 nm are used. Results obtained have shown that more available wavelength bands from the different center wavelengths can be generated, which can be used to form new dense wavelength division multiplexing bands, whereas the use of the very high channel capacity for personal wavelength and network applications is plausible. © 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52: 98–101, 2010; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24880
Compact sub‐wavelength microstrip band‐reject filter based on inter‐digital capacitance loaded loop resonators
Authors: Peng Yi , Zhang Wen‐Xun 
Published: November 2009

AbstractIn this article, the microstrip band‐reject filters based on inter‐digital capacitance loaded loop resonators (IDCLLRs) are proposed by using meandered microstip‐line, which enhances the coupling to the resonators and provides more structural parameters for flexible design. First, an IDCLLR‐based single‐stage meandered prototype of band‐reject filter has been designed and fabricated. The measured frequency response shows 2.2% relative stop‐bandwidth (−10 dB) with −21 dB maximal insertion‐loss at 3.34 GHz. Furthermore, the resonant frequencies versus inter‐digital length are studied. Finally, an IDCLLR‐based three‐stage meandered prototype of band‐reject filter was designed and fabricated too, the measured relative stop‐bandwidth (−10 dB) is 6.2% and the insertion‐loss at center frequency approaches −42 dB. © 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52: 166–169, 2010; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24885
Frequency range dependent TE10 to TE20 mode converter
Authors: Kokubo Yoshihiro 
Published: November 2009

AbstractWe have reported that single‐mode propagation is available for a metallic waveguide with dielectric rods arrayed at the center of the waveguide in the frequency under twice the cutoff frequency region using the TE10 mode, and in the frequency over twice the cutoff frequency region using the TE20 mode. In this investigation, a mode converter is proposed, which passes through a TE10 mode for low frequency range and converts TE10 to TE20 mode for the high frequency range. © 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 169–171, 2010; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24886
Erratum: On the advantages of magnetic materials in microstrip antenna miniaturization
Authors: Ikonen Pekka , Tretyakov Sergei 
Published: November 2009

AbstractOriginally published in Microwave Opt Technol Lett 50: 3131–3134, 2008
. © 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52: 247, 2010; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24890
Synthesis and characterization of low‐bandgap cyclopentadithiophene‐biselenophene copolymer and its use in field‐effect transistor and polymer solar cells
Authors: Lee Sang Kyu , Cho Nam Sung , Cho Shinuk , Moon Sang‐Jin , Lee Jae Kwan , Bazan Guillermo C. 
Published: November 2009

AbstractNovel series of conjugated copolymers, incorporating cyclopentadithiophene (CPDT) and the biselenophene (R‐CPDT‐Se2), were synthesized by Pd‐catalyzed Stille coupling polymerization. The optical, electrochemical, field‐effect carrier mobilities, and photovoltaic properties of the R‐CPDT‐Se2 were investigated and compared with cyclopentadithiophene (CPDT) and the bithiophene (EHex‐CPDT‐T2). The highest hole mobility of thin film transistor devices fabricated with new p‐type polymer semiconductors, Oct‐CPDT‐Se2, was 1.3 × 10−3 cm2/Vs with an on/off ratio of about 105. The maximum power conversion efficiency of polymer solar cell fabricated with the blend of EHex‐CPDT‐Se2/C71‐PCBM reached 1.86% with an open circuit voltage (VOC) of 0.55 V, a short circuit current density (Jsc) of 7.27 mA/cm2, and a fill factor (FF) of 0.47 under AM 1.5G irradiation (100 mW/cm2). © 2009 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem, 2009
Vinyl esters: Low cytotoxicity monomers for the fabrication of biocompatible 3D scaffolds by lithography based additive manufacturing
Authors: Heller Christian , Schwentenwein Martin , Russmueller Guenter , Varga Franz , Stampfl Juergen , Liska Robert 
Published: November 2009

AbstractLithography based additive manufacturing technologies (AMT) like stereolithography or digital light processing have become appealing methods for the fabrication of 3D cellular scaffolds for tissue engineering and regenerative medicine. To circumvent the use of (meth)acrylate‐based photopolymers, that suffer from skin irritation and sometimes cytotoxicity, new monomers based on vinyl esters were prepared. In vitro cytotoxicity studies with osteoblast‐like cells proofed that monomers based on vinyl esters are significantly less cytotoxic than (meth)acrylates. Photoreactivity was followed by photo‐differential scanning calorimetry and the mechanical properties of the photocured materials were screened by nanoindentation. Conversion rates and indentation moduli between those of acrylate and methacrylate references could be observed. Furthermore, osteoblast‐like cells were successfully seeded onto polymer specimens. Finally, we were able to print a 3D test structure out of a vinyl ester‐based formulation by μ‐SLA with a layer thickness of 50 μm. For in vivo testing of vinyl esters these 3D scaffolds were implanted into surgical defects of the distal femoral bone of adult New Zealand white rabbits. The obtained histological results approved the excellent biocompatibility of vinyl esters. © 2009 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem, 2009
Acetylcholinesterase point mutations in European strains of Tetranychus urticae (Acari: Tetranychidae) resistant to organophosphates
Authors: Khajehali Jahangir , Van Leeuwen Thomas , Grispou Maria , Morou Evangelia , Alout Haoués , Weill Mylène , Tirry Luc , Vontas John , Tsagkarakou Anastasia 
Published: November 2009

AbstractBACKROUND: In Tetranychus urticae Koch, acetylcholinesterase insensitivity is often involved in organophosphate (OP) and carbamate (CARB) resistance. By combining toxicological, biochemical and molecular data from three reference laboratory and three OP selected strains (OP strains), the AChE1 mutations associated with resistance in T. urticae were characterised.RESULTS: The resistance ratios of the OP strains varied from 9 to 43 for pirimiphos‐methyl, from 78 to 586 for chlorpyrifos, from 8 to 333 for methomyl and from 137 to 4164 for dimethoate. The insecticide concentration needed to inhibit 50% of the AChE1 activity was, in the OP strains, at least 2.7, 55, 58 and 31 times higher for the OP pirimiphos‐methyl, chlorpyrifos oxon, paraoxon and omethoate respectively, and 87 times higher for the CARB carbaryl. By comparing the AChE1 sequence, four amino acid substitutions were detected in the OP strains: (1) F331W (Torpedo numbering) in all the three OP strains; (2) T280A found in the three OP strains but not in all clones; (3) G328A, found in two OP strains; (4) A201S found in only one OP strain.CONCLUSIONS: Four AChE1 mutations were found in resistant strains of T. urticae, and three of them, F331W, G328A and A201S, are possibly involved in resistance to OP and CARB insecticides. Among them, F331W is probably the most important and the most common in T. urticae. It can be easily detected by the diagnostic PCR‐RLFP assay developed in this study. Copyright © 2009 Society of Chemical Industry
Dual functions of Mdt1 in genome maintenance and cell integrity pathways in Saccharomyces cerevisiae
Authors: Traven Ana , Lo Tricia L. , Pike Brietta L. , Friesen Helena , Guzzo Julie , Andrews Brenda , Heierhorst Jörg 
Published: November 2009

AbstractRecent evidence indicates considerable cross‐talk between genome maintenance and cell integrity control pathways. The RNA recognition motif (RRM)‐ and SQ/TQ cluster domain (SCD)‐containing protein Mdt1 is required for repair of 3′‐blocked DNA double‐strand breaks (DSBs) and efficient recombinational maintenance of telomeres in budding yeast. Here we show that deletion of MDT1 (PIN4/YBL051C) leads to severe synthetic sickness in the absence of the genes for the central cell integrity MAP kinases Bck1 and Slt2/Mpk1. Consistent with a cell integrity function, mdt1Δ cells are hypersensitive to the cell wall toxin calcofluor white and the Bck1–Slt2 pathway activator caffeine. An RRM‐deficient mdt1‐RRM0 allele shares the severe bleomycin hypersensitivity, inefficient recombinational telomere maintenance and slt2 synthetic sickness phenotypes, but not the cell wall toxin hypersensitivity with mdt1Δ. However, the mdt1‐RRM(3A) allele, where only the RNA‐binding site is mutated, behaves similarly to the wild‐type, suggesting that the Mdt1 RRM functions as a protein–protein interaction rather than a nucleic acid‐binding module. Surprisingly, in a strain background where double mutants are sick but still viable, bck1Δmdt1Δ and slt2Δmdt1Δ mutants differ in some of their phenotypes, consistent with the emerging concept of flexible signal entry and exit points in the Bck1–Mkk1/2–Slt2 pathway. Overall, the results indicate that Mdt1 has partially separable functions in both cell wall and genome integrity pathways. Copyright © 2009 John Wiley & Sons, Ltd.
Ultrasound-guided foreign body localization and removal using a finder needle
Authors: Mau Jonathan K. L. , Nelson Mathew , Raio Christopher 
Published: November 2009

Abstract
The localization and removal of a superficial foreign body is a common challenge that emergency physicians encounter. The use of ultrasonography to detect superficial foreign bodies has been well documented, but with varying success. This case report demonstrates the use of a finder needle, placed under ultrasound-guidance, to assist in the localization and removal of a glass foreign body that could not be identified after extensive wound exploration alone.
A report on the reproductive health of women after the massive 2008 Wenchuan earthquake
Authors: Liu Shujuan , Han Juntao , Xiao Dan , Ma Cuiling , Chen Biliang 
Published: November 2009

AbstractObjectiveTo evaluate the reproductive health of women in the aftermath of the 2008 Richter scale 8.0 Wenchuan earthquake in China.MethodsGynecologists surveyed 170 women using a questionnaire inquiring about symptoms of reproductive tract infection, menstruation disorders, satisfaction with sexual life, and desire for fertility.ResultsThe rates of symptoms of lower genital tract infection were higher after than before the earthquake (50.0% vs 26.5%), as were the rates for pelvic inflammatory disease (35.9% vs 19.4%) and menstruation disorders (51.8% vs 22.4%) (P < 0.05 for all). At the same time, the women's satisfaction with their sexual life was markedly decreased; 89.4% of them said they would not pursue a plan to become pregnant; and 67.1% said they would request pregnancy termination if they became pregnant.ConclusionThe findings of this first population‐based assessment of reproductive health following the massive Wenchuan earthquake may help in shaping public health measures benefiting women surviving large‐sale disasters.
Second‐look hysteroscopy after antitubercular treatment in infertile women with genital tuberculosis undergoing in vitro fertilization
Authors: Bahadur Anupama , Malhotra Neena , Mittal Suneeta , Singh Neeta , Gurunath Sumana 
Published: November 2009

AbstractObjectivesTo assess the efficacy of antitubercular treatment on the uterine cavity in infertile women diagnosed with genital tuberculosis using second‐look hysteroscopy.MethodsA total of 70 women with genital tuberculosis who underwent second‐look hysteroscopy were enrolled in the study. They were started on antitubercular drugs and followed up after 6 months of therapy with second‐look hysteroscopy. McNemar's χ2 test was used to compare the hysteroscopy findings before and after antitubercular treatment.ResultsAntitubercular treatment improved hysteroscopy findings in women with thin or flimsy adhesions (grade I), singular dense adhesions (grade II), and occluding adhesions at the internal os (grade IIa) (P < 0.01). Patients with extensive adhesions, extensive endometrial scarring, fibrosis, and a tubular cavity showed no improvement after antitubercular treatment. Mean endometrial thickness of the 70 patients on day 21 prior to starting drug therapy was 6.8 mm, which increased to 8.1 mm after 6 months of treatment.ConclusionConsidering the exorbitant cost of assisted reproductive technology in low‐resource countries, it is necessary to consider reassessment of the uterine cavity prior to beginning such treatment.
Relationship between just‐in‐time manufacturing practices and performance: A meta‐analytic investigation
Authors: Mackelprang Alan W. , Nair Anand 
Published: November 2009

AbstractJust‐in‐time (JIT) manufacturing is among the most commonly researched topics in the area of operations management. This study examines the relationship between JIT manufacturing practices and performance outcomes by means of meta‐analysis of correlations approach. Based on an in‐depth analysis of literature spanning from 1992 to 2008, the results of this meta‐analytic investigation support a positive relationship between JIT manufacturing practices and aggregate performance. However, the findings suggest that not all individual JIT practices are associated with all types of performance outcomes. This study highlights the JIT practices that have the greatest impact on individual performance outcomes and emphasizes the role of moderating factors in the relationship between JIT practices and performance. Theoretical and managerial implications are discussed and directions for future theory building in JIT are presented.
Consumption of caffeinated coffee and a high carbohydrate meal affects postprandial metabolism of a subsequent oral glucose tolerance test in young, healthy males
Authors: Moisey Lesley L. , Robinson Lindsay E. , Graham Terry E. 
Published: November 2009

Caffeine and caffeinated coffee (CC) elicit acute insulin insensitivity when ingested before a carbohydrate load. The effects of CC on glucose tolerance and insulin sensitivity when co-ingested with a high carbohydrate meal and on postprandial metabolism of a subsequent (second) carbohydrate load have not been studied. In a randomised, crossover design, ten healthy males ingested either CC (5 mg caffeine/kg body weight), decaffeinated coffee (DC) or water (W; equal volume) co-ingested with a high glycaemic index cereal followed 3 h later by a 75 g oral glucose tolerance test. After the initial meal, insulin area under the curve (AUC) and insulin sensitivity index did not differ between treatments, although glucose AUC for CC (107 (sem 18) mmol/l × 3 h) and DC (74 (sem 15) mmol/l × 3 h) was greater than W ( − 0·2 (sem 29) mmol/l × 3 h, P < 0·05). After the second carbohydrate load, insulin AUC for CC was 49 % and 57 % greater (P < 0·01) than for DC and W, respectively. Despite the greater insulin response, glucose AUC for CC (217 (sem 24) mmol/l × 2 h) was greater than both DC (126 (sem 11) mmol/l × 2 h, P = 0·01) and W (55 (sem 34) mmol/l × 2 h, P < 0·001). Insulin sensitivity index after the second meal was lower after CC (8·2 (sem 0·9)) compared with both DC (12·4 (sem 1·2), P < 0·01) and W (13·4 (sem 1·4), P < 0·001). Co-ingestion of CC with one meal resulted in insulin insensitivity during the postprandial phase of a second meal in the absence of further CC ingestion. Thus, CC may play a role in daily glycaemic management.
Effect of simvastatin vs. rosuvastatin on adiponectin and haemoglobin A1c levels in patients with non‐ischaemic chronic heart failure
Authors: Tsutamoto Takayoshi , Yamaji Masayuki , Kawahara Chiho , Nishiyama Keizo , Fujii Masanori , Yamamoto Takashi , Horie Minoru 
Published: November 2009

AimsTo compare the effects of lipophilic simvastatin and hydrophilic rosuvastatin on plasma adiponectin and glycated haemoglobin A1c (HbA1c) levels in patients with non‐ischaemic chronic heart failure (NICHF).Methods and resultsSeventy‐one stable outpatients with NICHF, who were already receiving standard therapy for CHF, were randomized to simvastatin (n = 35) or rosuvastatin (n = 36). Plasma levels of brain natriuretic peptide (BNP), total adiponectin, high‐sensitive C‐reactive protein, HbA1c, and oxidized low‐density lipoprotein (oxLDL), a marker of oxidative stress, were measured before and 4 months after treatment with simvastatin or rosuvastatin. There was no difference in the baseline characteristics including left ventricular ejection fraction (LVEF) and biochemical parameters between the two groups. In both groups, plasma BNP levels and LVEF did not change after 4 months. Plasma levels of adiponectin and oxLDL did not change and HbA1c level was slightly increased (6.0 ± 0.9 vs. 6.1 ± 0.9%, P = 0.053) in the simvastatin group. In contrast, plasma adiponectin level was significantly increased (12.3 ± 7.3 vs. 14.0 ± 8.2 µg/mL, P = 0.012) concomitant with a significant reduction in oxLDL and HbA1c (oxLDL: 8.8 ± 4.7 vs. 7.6 ± 4.7 U/mL, P = 0.0059; HbA1c: 6.0 ± 0.7 vs. 5.9 ± 0.7%, P = 0.002) in the rosuvastatin group.ConclusionThese findings suggest that hydrophilic rosuvastatin but not lipophilic simvastatin increases adiponectin and decreases HbA1c levels in patients with NICHF.
Heart failure in patients hospitalized with acute coronary syndromes: observations from the Gulf Registry of Acute Coronary Events (Gulf RACE)
Authors: Alsheikh‐Ali Alawi A. , Al‐Mallah Mouaz H. , Al‐Mahmeed Wael , Albustani Nazar , Al Suwaidi Jassim , Sulaiman Kadhim , Zubaid Mohammad ,   for the Gulf RACE Investigators
Published: November 2009

AimsWe describe the prevalence and prognostic significance of heart failure (HF) complicating acute coronary syndromes (ACS) in patients enrolled in the Gulf Registry of Acute Coronary Events (Gulf RACE).Methods and resultsGulf RACE is a prospective, multi‐national study of all patients hospitalized with ACS in 65 centres in six Arab countries. Data were analysed based on HF on presentation (Killip class II/III) or during hospital stay. The study endpoint was all‐cause in‐hospital mortality. Of 8000 patients with ACS, 2009 (25%) had HF on presentation or during the hospital stay. Patients with HF were older, more often with co‐morbid conditions, and less often treated with evidence‐based therapies. Heart failure was associated with higher in‐hospital mortality (7.9 vs. 0.9%, P < 0.001), which persisted after adjusting for age, gender, and presentation and treatment characteristics [adjusted odds ratio 4.1 (1.8–9.4)]. There was a significant interaction between age and the prognostic effect of HF on in‐hospitality mortality, such that younger patients had a significantly higher increase in mortality related to HF (P for interaction = 0.002).ConclusionHeart failure complicates a substantial proportion of ACS admissions in the Arab Middle East and is associated with higher in‐hospital death. Younger patients with ACS have a higher relative increase in mortality related to HF.