bluuebunny/crossref_metadata_2025_split huggingface dataset:
Dual‐mode bandpass filter using triangular patch resonator with inverted T‐shaped slot
Authors: Serrano Ariana L. C. , Correra Fatima Salete 
Published: September 2007

AbstractThis article presents a miniaturized dual‐mode narrow bandpass filter using an equilateral triangular patch resonator with an inverted T‐shaped slot, which exhibited a size reduction of 37% compared with a single‐mode equilateral triangular patch at the same frequency. Two‐ and four‐pole dual‐mode bandpass filters were designed and fabricated with this new resonator. Experimental results with the two‐pole filter centred at 7.76 GHz showed a fractional bandwidth of 4.5%, return loss better than 17.8 dB, and minimum insertion loss of 2.2 dB. The results of the four‐pole filter showed a fractional bandwidth of 3.5%, return loss better than 16 dB, minimum insertion loss of 2.6 dB, and a good second harmonic band rejection. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 2897–2902, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22927
A compact Ku‐band MMIC subharmonic image rejection mixer using an active filter
Authors: Hou Jian‐An , Chiu Jui‐Chieh , Wang Yeong‐Her 
Published: September 2007

AbstractA subharmonic diode mixer with high image rejection and linearity for Ku‐band applications is realized. It is fabricated on a 4‐mil substrate using 2.0 μm HBT‐based MMIC processes. In the design, an active filter in front of the mixer is used to cancel the image interference and to achieve the goal of higher isolation with a smaller chip area. The measured results show the conversion loss of 16 dB, input third‐order intercept point of 4.1 dBm and the image rejection ratio of 30.7 dBc at 14 GHz. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 3136–3139, 2007; Published online in Wiley Inter‐Science (www.interscience.wiley.com). DOI 10.1002/mop.22930
A novel and efficient subgridding scheme in FDTD method using the Crank‐Nicolson algorithm
Authors: Lin Ting‐Chun , Kuo Chih‐Wen 
Published: September 2007

AbstractSubgridding algorithms in the finite‐difference time‐domain (FDTD) method are applicable and efficient in handling problems containing fine structural features. Only regions surrounding the fine features need to be discretized with a finer spatial grid to avoid finely discretizing the whole computation domain but still maintaining the desired accuracy. A novel subgridding scheme using the Crank‐Nicolson (CN) method to update the field components in the fine grid region is proposed in this article. Combined with the Douglas‐Gunn algorithm to convert the block tri‐diagonal matrix of the CN method into pure tri‐diagonal form, the proposed method is efficient at solving circuit problems and scattering problems. Accuracy of the proposed method is verified by comparison with results from a conventional FDTD method with fine spatial increment. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 3103–3106, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22932
Design of wideband circularly polarized stacked microstrip antennas with dielectric cover using single coaxial feed
Authors: Nasimuddin Nasimuddin 
Published: September 2007

AbstractA theoretical design of single coaxial‐feed wideband circular polarized rectangular stacked microstrip antennas (CPSMAs) with dielectric cover is present by using optimization of feed location and other parameters. The location of the single coaxial feed, foam thickness between driven and parasitic patches and aspect‐ratio of parasitic patch is optimized for wideband and quality of circular polarization (CP). Prototype antenna designed, fabricated, and measured its performance. The antenna has measured 3‐dB AR bandwidth of 13.5%, minimum AR of 0.5 dB, a 10‐dB return loss bandwidth of 21.5%. The gain of antenna is more than 7.5 dBic over the 3‐dB AR bandwidth and peak gain about 9 dBic at 5.6 GHz. The total antenna height is 8.583 mm or 0.157 λ0 at 5.5 GHz, where λ0 is the free space wavelength. The proposed techniques simplify the design of wideband circularly polarized antennas with cover for medium to high gain applications. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 3027–3033, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22937
An exact lumped‐element equivalent circuit model for transmission‐line transformers formed from coupled microstrip lines
Authors: Post John 
Published: September 2007

AbstractThis paper introduces an exact lumped‐element equivalent circuit model for Ruthroff transmission‐line transformers (TLTs) constructed from coupled microstrip lines. Measured results are compared with model predictions from 0.01 GHz up to 16.7 GHz for the case of three spiral TLTs fabricated in a silicon multichip‐module‐deposited (MCM‐D) process. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 2983–2988, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22939
Design and prototype of a 12‐GHz transmit‐array
Authors: Padilla de la Torre P. , Sierra‐Castañer M. 
Published: September 2007

AbstractThe aim of the paper below is to present a particular antenna structure, working as a transmit‐array structure (reception/transmission lens). Because of its working function, the structure consists of a patch array in the reception part, a phase delay for each patch and another patch array in the transmission part. The idea in using this lens is to place it in front of a particular antenna to modify the radiation pattern of the feeding antenna. The architecture which is being applied implies the use of patches with probe feeding. To avoid undesired coupling between the reception and the transmission arrays, ground planes (that isolate the reception array, the phase delay line, and the transmission array) are placed. In this article, the phase delay part, the radiation part, and the whole structure are analyzed, designed, simulated, and prototyped. Finally, measurements of these prototypes are shown. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 3020–3026, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22950
Effects of superstrates on the resonant frequency of rectangular microstrip antennas
Authors: Kumar Raj , Malathi P. 
Published: September 2007

AbstractThis article presents the extended expression to calculate the environmental effect on resonant frequency of multilayer rectangular microstrip antennas. The expression has been investigated for effective dielectric constant εeff and resonant frequency fr. The effective dielectric constant εeff of Present Method has been compared with full wave numerical technique with and without loading. These are in good agreement within 1% accuracy. It has been observed that % change in fr due to cover and substrate thickness is around 3.2% and 20%, respectively, as their thickness is varying 19 times of its initial value. This variation is drastic for h3/h2 = 0.01. The maximum % variation in fr for one substrate and two superstrate is around 5% as h4 varies from 1 mm to 5 mm. In case of unwanted air (h3), the % variation in fr of present method in comparison to experimental value is less than 1.0% for small air‐gap and 0.4% for large air‐gap for various spaced dielectric (εr4), which reveals that the effect of superstrate in fr is small than substrate above the ground plane. The resonant frequency in suspended substrate microstrip antenna with and without superstrate is 21.8% and 28.15%, respectively, as h1/h2 varies from 0.065 to 1.94. The resonant frequency of all the possible configuration is in good agreement with the experimental results. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 2946–2950, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22954
Novel triple‐mode resonators using split‐ring resonator
Authors: Zhao Hui , Cui Tie Jun 
Published: September 2007

AbstractNovel and compact triple‐mode resonators have been investigated and designed using split‐ring resonator (SRR) to obtain three controllable resonant frequencies. An even/odd‐mode method is proposed. The current distributions are computed by commercial software. Several triple‐mode resonators are designed and fabricated. Both simulation and measurement results are presented to show the good performance of the resonators, which have excellent agreements. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 2918–2922, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22955
A 1.9‐GHz CMOS power amplifier using an interdigitated transmission line transformer
Authors: Park Changkun , Baek Sang‐Hyun , Ku Bon‐Hyun , Hong Songcheol 
Published: September 2007

AbstractA 1.9‐GHz CMOS differential power amplifier for polar transmitter applications is designed using a 0.25‐μm RF CMOS process. The input transformer and output transformer are fully integrated on the chip. The transmission line transformer is used as an output power combiner and an output matching component. To increase the coupling factor of the transformer, an interdigitated transmission line transformer is used and it achieves a drain efficiency of 28% at the maximum output power. The maximum output power is 28.2 dBm with a 1.8‐V supply voltage. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 3162–3166, 2007; Published online in Wiley InterScience (www.interscience.wiley.com).DOI 10.1002/mop.22957
Convolutional perfectly matched layer for weakly conditionally stable hybrid implicit and explicit‐FDTD method
Authors: Ahmed Iftikhar , Li Er‐Ping 
Published: September 2007

AbstractIn this article, we developed and implemented the convolutional perfectly matched layer (CPML) for the hybrid implicit explicit finite‐difference time‐domain (HIE‐FDTD) method. The method is validated against the conventional FDTD‐PML method and is found promising. The development of CPML is able to extend the HIE‐FDTD to open surface problems, which works at higher CFL numbers in comparing to the conventional FDTD method. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 3106–3109, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22962
Ultrasonographic measurements in cubital tunnel syndrome
Authors: Yoon Joon Shik , Kim Byung‐Jo , Kim Sei Joo , Kim Jae Min , Sim Kyu Hun , Hong Suk Joo , Walker Francis O. , Cartwright Michael S. 
Published: September 2007

AbstractThe cubital tunnel is the most common site of ulnar nerve entrapment. Previous ultrasound studies have demonstrated enlargement of the ulnar nerve in cubital tunnel syndrome but did not report on the cubital tunnel itself. Twenty‐two individuals with cubital tunnel syndrome were evaluated with nerve conduction studies and ultrasound. The ultrasound measurement that most strongly correlated with conduction velocity was the ratio of ulnar nerve to cubital tunnel cross‐sectional area with the elbow flexed. Measurement of this ratio may improve the diagnostic accuracy of ultrasound in cubital tunnel syndrome, although further investigation is needed. Muscle Nerve, 2007
Drug–drug interactions with systemic antifungals in clinical practice
Authors: Depont Fanny , Vargas Frédéric , Dutronc Hervé , Giauque Emmanuelle , Ragnaud Jean‐Marie , Galpérine Tatiana , Abouelfath Abdelilah , Valentino Ruddy , Dupon Michel , Hébert Guillaume , Moore Nicholas 
Published: September 2007

AbstractPurposeWe describe drug–drug interactions (DDIs) encountered with antifungals in clinical practice.MethodsRetrospective observational study of hospitalized adults receiving systemic antifungal treatment in the intensive care unit (ICU) and in the infectious diseases unit (IDU) of the University Hospital of Bordeaux, France between 1996 and 2001. All treatment episodes with antifungal agent were examined and all prescribed concomitant medication identified for potential drug–drug interactions (PDDI)‐serious events occurring during treatment were adjudicated for clinical DDI.ResultsThere were 150 treatment episodes with antifungal agent in 105 patients. Fluconazole was used in 48% of the treatment episodes, amphotericin B in 46%, itraconazole in 4.7% and flucytosine in 1.3%. One hundred and sixteen PDDIs were identified related to the use of amphotericin B (81.0%), fluconazole (17.2%) or itraconazole (1.7%). Of these, 22 were associated with a clinical evidence of adverse interaction (hypokalemia, increased creatininemia or nephrotoxicity). All these clinical drug–drug interactions (CDDIs) were with amphotericin B. They were due to furosemide (36.4%), cyclosporine (31.8%) and hydrocortisone (18.2%). PDDIs were mostly associated with leukaemia (40.4%), HIV infection (24.6%) and cancer (10.5%).ConclusionsIn ICU and IDU, systemic antifungal treatments lead to many PDDIs, mainly related to the type of antifungal used and to the pathology treated. Clinical DDI seem more common with amphotericin. Copyright © 2007 John Wiley & Sons, Ltd.
A pilot study on generic medicine substitution practices among community pharmacists in the State of Penang, Malaysia
Authors: Ping Chong Chee , Bahari Mohd Baidi , Hassali Mohamed Azmi 
Published: September 2007

AbstractPurposeThe purpose of this study was to evaluate the generic substitution (GS) practices undertaken by community pharmacists in the State of Penang, Malaysia with a focus on the extent of communication between pharmacists and prescribers on issues related to GS, consumer's acceptance on the GS and estimation of cost saving achieved for patients opted for GS.MethodA cross‐sectional descriptive study for a period of 2 months using a specific questionnaire as a data collection tool was undertaken with a random sample of 40 community pharmacies located in the State of Penang.ResultsBy the end of the study period, 34 out of 40 pharmacies contacted participated in the study. Forty‐seven per cent of pharmacists consulted prescribers while promoting GS to their consumers. Majority of the prescribers (84.4%) when contacted by the pharmacists accepted the suggestion for substitution. From consumers' perspective, 88% (n = 156) of the consumers involved in this study accepted pharmacist's recommendation to generically substitute their prescribed medications. Through acceptance of GS, it has been estimated that the overall consumers' expenses on drugs can be reduced to a total of RM6137 (US$1615; US$ 1 = RM3.80) and this corresponds to a cost saving of 61.1%.ConclusionsThe outcome of the present study showed that through GS recommendation by community pharmacist, consumers can save the expenditure of their prescribed medications. Copyright © 2007 John Wiley & Sons, Ltd.
Attitudes, beliefs and knowledge concerning antibiotic use and self‐medication: a comparative European study
Authors: Grigoryan Larissa , Burgerhof Johannes G. M. , Degener John E. , Deschepper Reginald , Lundborg Cecilia Stålsby , Monnet Dominique L. , Scicluna Elizabeth A. , Birkin Joan , Haaijer‐Ruskamp Flora M. ,   on behalf of the SAR consortium
Published: September 2007

AbstractPurposeAlthough the relevance of cultural factors for antibiotic use has been recognized, few studies exist in Europe. We compared public attitudes, beliefs and knowledge concerning antibiotic use and self‐medication between 11 European countries.MethodsIn total, 1101 respondents were interviewed on their attitudes towards appropriateness of self‐medication with antibiotics and situational use of antibiotics, beliefs about antibiotics for minor ailments, knowledge about the effectiveness of antibiotics on viruses and bacteria and awareness about antibiotic resistance. To deal with the possible confounding effect of both use of self‐medication and education we performed stratified analyses, i.e. separate analyses for users and non‐users of self‐medication, and for respondents with high and low education. The differences between countries were considered relevant when regression coefficients were significant in all stratum‐specific analyses.ResultsRespondents from the UK, Malta, Italy, Czech Republic, Croatia, Israel and Lithuania had significantly less appropriate attitudes, beliefs or knowledge for at least one of the dimensions compared with Swedish respondents. The Dutch, Austrian and Belgian respondents did not differ from Swedish for any dimension.ConclusionsThe most pronounced differences were for awareness about resistance, followed by attitudes towards situational use of antibiotics. Awareness about antibiotic resistance was the lowest in countries with higher prevalence of resistance. Copyright © 2007 John Wiley & Sons, Ltd.
Statistical identification of differentially labeled peptides from liquid chromatography tandem mass spectrometry
Authors: Cho HyungJun , Smalley David M. , Theodorescu Dan , Ley Klaus , Lee Jae K. 
Published: September 2007

AbstractLC‐MS/MS with certain labeling techniques such as isotope‐coded affinity tag (ICAT) enables quantitative analysis of paired protein samples. However, current identification and quantification of differentially expressed peptides (and proteins) are not reliable for large proteomics screening of complex biological samples. The number of replicates is often limited because of the high cost of experiments and the limited supply of samples. Traditionally, a simple fold change cutoff is used, which results in a high rate of false positives. Standard statistical methods such as the two‐sample t‐test are unreliable and severely underpowered due to high variability in LC‐MS/MS data, especially when only a small number of replicates are available. Using an advanced error pooling technique, we propose a novel statistical method that can reliably identify differentially expressed proteins while maintaining a high sensitivity, particularly with a small number of replicates. The proposed method was applied both to an extensive simulation study and a proteomics comparison between microparticles (MPs) generated from platelet (platelet MPs) and MPs isolated from plasma (plasma MPs). In these studies, we show a significant improvement of our statistical analysis in the identification of proteins that are differentially expressed but not detected by other statistical methods. In particular, several important proteins – two peptides for β‐globin and three peptides for von Willebrand Factor (vWF) – were identified with very small false discovery rates (FDRs) by our method, while none was significant when other conventional methods were used. These proteins have been reported with their important roles in microparticles in human blood cells: vWF is a platelet and endothelial cell product that binds to P‐selectin, GP1b, and GP IIb/IIIa, and β‐globin is one of the peptides of hemoglobin involved in the transportation of oxygen by red blood cells.
Synthesis, structural, and retrostructural analysis of helical dendronized poly(1‐naphthylacetylene)s
Authors: Percec Virgil , Rudick Jonathan G. , Peterca Mihai , Aqad Emad , Imam Mohammad R. , Heiney Paul A. 
Published: September 2007

AbstractStructural and retrostructural analysis of chiral, nonracemic (poly [(3,4,5)dm8G1‐1EN]), and achiral (poly[(3,4,5)12G1‐1EN]) poly(1‐naphthylacetylene)s demonstrates new design principles for helical dendronized polyarylacetylenes. The oblate cylindrical dendronized polymers self‐organize in a c2mm centered rectangular columnar (Φr‐c) lattice. An all cis‐polyene backbone microstructure with very high cisoid character is introduced to rationalize features from small‐ and wide‐angle X‐ray diffraction experiments. More compact helical conformations are ideal for efficient communication or amplification of chirality over long distances. Peripheral chiral tails select a preferred helical screw sense of the polyene backbone. In solution, the preferred helical conformation persists over a wide temperature range. In bulk, the naphthyl moiety facilitates a longer correlation length for helical order compared to an analogous minidendritic poly(phenylacetylene). These attributes suggest that the naphthyl moiety may be better suited for expressing helical chirality in monolayer domains. © 2007 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 45: 4974–4987, 2007
Factors that influence cancer patients' and relatives' anxiety following a three‐person medical consultation: impact of a communication skills training program for physicians
Authors: Lienard Aurore , Merckaert Isabelle , Libert Yves , Delvaux Nicole , Marchal Serge , Boniver Jacques , Etienne Anne‐Marie , Klastersky Jean , Reynaert Christine , Scalliet Pierre , Slachmuylder Jean‐Louis , Razavi Darius 
Published: September 2007

AbstractBackground: No study has yet assessed the impact of physicians' skills acquisition after a communication skills training program on changes in patients' and relatives' anxiety following a three‐person medical consultation. This study aimed at comparing, in a randomized study, the impact, on patients' and relatives' anxiety, of a basic communication skills training program and the same program consolidated by consolidation workshops and at investigating physicians' communication variables associated with patients' and relatives' anxiety.Methods: Consultations with a cancer patient and a relative were recorded and analyzed by the Cancer Research Campaign Workshop Evaluation Manual. Patients' and relatives' anxiety were assessed with the State‐Trait Anxiety Inventory—State.Results: No statistically significant change over time and between groups was observed. Mixed‐effects modeling of changes in patients' and relatives' anxiety showed that decreases in both patients' and relatives' anxiety were linked with patients' and relatives' self‐reported distress (p = 0.031 and 0.005), and that increases in both patients' and relatives' anxiety were linked with physicians' breaking bad news (p = 0.028 and 0.005).Conclusion: No impact of the training program was observed. Results indicate the need to further study communication skills which may help reduce patients' and relatives' anxiety especially when breaking bad news. Copyright © 2007 John Wiley & Sons, Ltd.
Antibody and T‐cell responses specific for the androgen receptor in patients with prostate cancer
Authors: Olson Brian M. , McNeel Douglas G. 
Published: September 2007

AbstractBACKGROUNDThe androgen receptor (AR) is a steroid hormone receptor that is an essential regulator of prostate development, and the primary molecular target for the treatment of metastatic prostate cancer. In this report, we evaluated whether patients with prostate cancer have pre‐existing immune responses specific for the AR as evidence that the AR also might be pursued as an immunological target antigen.METHODSThe detection of auto‐antibodies specific for the AR in patient sera was evaluated by ELISA and Western blotting. Peripheral blood mononuclear cells were analyzed for the presence of AR‐specific T‐cells, as measured by T‐cell proliferation, interferon gamma (IFNγ) and interleukin‐10 secretion.RESULTSWe found that a significantly higher frequency of prostate cancer patients have AR LBD‐specific antibody responses than do healthy male volunteers [18/105 cancer patients (17.1%) vs. 0/41 healthy volunteers, P = 0.0049], and that these responses were present regardless of the patients' disease stage [8/46 organ‐confined prostate cancer patients (17.4%), 3/22 metastatic androgen‐dependent patients (13.6%), and 7/37 metastatic, androgen‐independent patients (18.9%)]. These antibodies were pre‐dominantly of the IgG isotype, and furthermore of the IgG2 sub‐isotype. In addition, we found that patients with antibody responses also had concurrent antigen‐specific CD4+ and CD8+ T‐cell proliferation and IFNγ secretion when compared to patients without antibody responses.CONCLUSIONSThese data demonstrate that some patients with prostate cancer have pre‐existing humoral and cellular immune responses specific for the AR, suggesting that tolerance against the AR is not absolute and that the AR may be a potential immunotherapeutic target antigen. Prostate 67: 1729–1739, 2007. © 2007 Wiley‐Liss, Inc.