bluuebunny/crossref_metadata_2025_split huggingface dataset:
An efficient neural network model for the input resonant resistance of coaxial fed rectangular microstrip antennas with thin and thick substrates
Authors: Şimşek Serkan 
Published: August 2006

AbstractIn this paper, an efficient neural network model is suggested to determine the input resonant resistance of coaxial fed rectangular microstrip antennas (MSAs) with thin and thick substrates. The NN results are in good agreement with experimental results reported in literature. This method can easily be modified to address problems involving more general types of MSAs. © 2006 Wiley Periodicals, Inc. Microwave Opt Technol Lett 48: 2197–2199, 2006; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.21908
Modeling and application of stepped impedance resonators with double coaxial structure
Authors: Song Kaijun , Fan Yong , Zhang Yonghong 
Published: August 2006

AbstractAn improved accurate modeling for miniaturized stepped impedance resonators with a double coaxial structure is proposed in this paper. The step discontinuities of the double coaxial stepped impedance resonators (DC‐SIRs) have been given full consideration in the modeling. The band‐pass filters have been designed using the accurate modeling of DC‐SIRs. The band‐pass filters mentioned in this paper show excellent performances such as more compact size and lower insertion loss, and it can be used at lower frequencies. © 2006 Wiley Periodicals, Inc. Microwave Opt Technol Lett 48: 2314–2317, 2006; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.21910
The multilayer folded couplers and their application
Authors: Chiu L. , Xue Q. , Chan C. H. 
Published: August 2006

AbstractIn this paper, three folded couplers and their application have been presented. The Wilkinson power divider, and 90° and 180° hybrids are folded for size reduction in the multilayered printed circuit media. The folded hybrid ring is employed as the transition between the microstrip line (MSL) and the parallel‐strip line (PSL) for balanced circuit applications. The PSL has an inherent advantage of easy realization of balanced configuration, which is suitable for push–pull designs, especially for high power applications. The PSL makes the design of circuits more flexible than MSL because the lump components and solid state devices can be easily mounted in both series and shunt manners without any difficulties in fabrication. © 2006 Wiley Periodicals, Inc. Microwave Opt Technol Lett 48: 2285–2288, 2006; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.21913
Self‐pulsing dynamics of high‐power Yb‐doped fiber lasers
Authors: Fu Shenggui , Feng Xinhuan , Si Libin , Guo Zhancheng , Jia Xiujie , Zhao Ying , Yuan Shuzhong , Dong Xiaoyi 
Published: August 2006

AbstractExperimental study of self‐pulsing behaviors of Yb‐doped double‐clad fiber lasers is presented. The behavior can be explained by the saturation phenomenon of the unpumped doped fiber. Results from frequency beating of horizontal modes, the pulse curves show fast oscillations in multimode fiber laser. The self‐modulation pulses are restrained in single‐mode fiber lasers, and the pulse train is rather regular and smooth than that of multimode fiber lasers. When the doped fiber is sufficiently pumped, the laser obtained a quasi‐CW output state. © 2006 Wiley Periodicals, Inc. Microwave Opt Technol Lett 48: 2282–2285, 2006; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.21914
A continuously steerable array antenna using movable dielectric slabs on a coplanar waveguide
Authors: Cha Junho , Kuga Yasuo , Lee Sangil 
Published: August 2006

AbstractA simple steerable array antenna is designed using a movable dielectric phase shifter. The change of the effective dielectric constant at different dielectric slab positions on a coplanar waveguide is used as the phase shifter. The impedance matching and desired phase shift conditions are satisfied at two slab heights, and reflection is designed to be minimized at all slab positions. A four‐element steerable array antenna at 5.8 GHz is fabricated and measured for testing purposes. © 2006 Wiley Periodicals, Inc. Microwave Opt Technol Lett 48: 2222–2227, 2006; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.21920
TE‐pass Zn‐diffused LiNbO3 waveguide polarizer
Authors: Twu Ruey‐Ching , Huang Chia‐Chih , Wang Way‐Seen 
Published: August 2006

AbstractProcess‐dependence characteristics of Zn‐diffused waveguides on a y‐cut, x‐propagation LiNbO3 substrate at 1.55‐μm wavelength are presented for the first time. The experimental results show that a single‐mode waveguide of extraordinary polarization is easily fabricated and can serve as an effective TE‐pass waveguide polarizer. The best polarization extinction ratio of 32 dB/cm and the corresponding propagation loss of 0.9 dB/cm are obtained. © 2006 Wiley Periodicals, Inc. Microwave Opt Technol Lett 48: 2312–2314, 2006; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.21923
Efficiency measurement of antennas for on‐body communications
Authors: Salim Tareq , Hall Peter. S. 
Published: August 2006

AbstractThe Wheeler cap method is used to measure the efficiency of antennas for use in on‐body communication systems. A monopole and a planar inverted F antenna on small ground planes were mounted in contact with body phantom material and their efficiency measured using the Wheeler cap and by a conventional anechoic chamber method. Results from the two methods show close agreement and also are close to results of simulations using commercial software. © 2006 Wiley Periodicals, Inc. Microwave Opt Technol Lett 48: 2256–2259, 2006; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.21930
A 2.4‐GHz dual‐patch RFID tag antenna scattering analysis
Authors: Lee K. J. , Kim D. , Kim M. , Tanaka M. , Matsugatani K. 
Published: August 2006

AbstractA dielectric‐filled metal‐patch antenna combinable with an internal RFID IC chip is introduced. This antenna is designed to operate either in an empty space or on top of large metal surface. The proposed tag antenna's dimension is adjusted to produce the maximum amount of scattered power due to tag's internal‐impedance modulation for the normal incidence angle. A 2.44‐GHz dual‐patch antenna is fabricated to demonstrate the amounts of impedance‐modulated scattered power at various reader‐to‐tag angles depending on the tag antenna radiation pattern. © 2006 Wiley Periodicals, Inc. Microwave Opt Technol Lett 48: 2241–2244, 2006; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.21931
Determination of microwave dielectric constant by two microstrip line method combined with EM simulation
Authors: Chang Sheng‐Hsiung , Kuan Hon , Wu Hung‐Wei , Yang Ru‐Yuan , Weng Min‐Hang 
Published: August 2006

AbstractThis paper presents a modified procedure to determine the microwave dielectric constant of substrate by two microstrip line method combined with EM simulation. The dielectric constant of substrate is mapped from the measured transmission phase with those of EM simulation, instead of using the closed form equations between the effective dielectric constant and dielectric constant. A tested example of dielectric constant of FR4 substrate is experimented and extracted to verify the proposed procedure. © 2006 Wiley Periodicals, Inc. Microwave Opt Technol Lett 48: 2199–2201, 2006; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.21936
Electrically switchable exhibition of circular Bragg phenomenon by an isotropic slab
Authors: Lakhtakia Akhlesh 
Published: August 2006

AbstractA slab of an isotropic material with structural chirality in the thickness direction and with either 43m or 23 point group symmetry exhibits the circular Bragg phenomenon in the optical regime, only on the application of a low‐frequency electric field across its two faces. © 2006 Wiley Periodicals, Inc. Microwave Opt Technol Lett 48: 2148–2153, 2006; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.21941
A novel single‐fed circularly polarized patch antenna with an opening through the whole structure
Authors: Bernard L. 
Published: August 2006

AbstractA novel single‐fed circularly polarized antenna is proposed with an hole through the whole antenna structure. Parameter studies are performed and design rules are brought out. Experimental results are compared to simulated ones, illustrating the feasibility and the performances of such antennas. © 2006 Wiley Periodicals,Inc. Microwave Opt Technol Lett 48:2337–2340, 2006; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.21946
Corrigendum: Ideal and real PBG multilayers of negative and positive phase velocity materials in a parallel‐plate waveguide
Authors: Depine Ricardo A. , Martínez Ricci María L. , Lakhtakia Akhlesh 
Published: August 2006

AbstractOriginally published in Microwave Opt Technol Lett 48: (2006); 1945–1953. Comparison of guided wave propagation (a) in a parallel‐plate waveguide with perfectly conducting walls and filled with either real or ideal photonic bad gap (PBG) multilayers whose unit cell comprises a positive phase velocity and a negative phase velocity layers, and (b) in the stratification direction as well as obliquely in the same PBG multilayers but of infinite transverse extent assists in the explanation of several band‐gap features and reflectance peaks, particularly those associated with zero average refractive index, computed for (a). © 2006 Wiley Periodicals, Inc. Microwave Opt Technol Lett 48: 2365–2372, 2006; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22022
Effects of arginine‐glycine‐aspartic acid (RGD) containing snake venom peptides on parthenogenetic development and in vitro fertilization of bovine oocytes
Authors: White K.L. , Passipieri M. , Bunch T.D. , Campbell K.D. , Pate B. 
Published: August 2006

AbstractThe ability of synthetic arginine‐glycine‐aspartic acid (RGD)‐containing peptides to induce intracellular calcium transients similar to those observed at fertilization by spermatozoa in the bovine has been reported (Campbell et al., 2000: Biol Reprod 62:1702–1709; Sessions et al., 2006. Mol Reprod Dev). These results also indicated the ability of synthetic RGD‐containing peptides to induce activation and subsequent parthenogenetic development to the blastocyst stage, although, at numbers lower than observed with control in vitro fertilization (IVF). Evidence has been provided indicating the important effect of surrounding regions on the biological activity of the RGD sequence (Zhu and Evans, 2002; Sessions et al., 2006). The current experiments were designed to use natural RGD‐containing sequences (disintegrins) to understand their effects. A total of three RGD‐containing snake venom peptides (Kistrin (K), Elegantin (Ele), and Echistatin (Ech)) and one nonRGD‐containing venom (Erabutoxin B (EB; control) were used at three concentrations (0.1, 1, and 10 µg /ml) to induce parthenogenetic development to the blastocyst stage and in conjunction (1.0, 5.0, and 10 µg/ml) with spermatozoa to evaluate competitive inhibition of fertilization and subsequent development. A (P < 0.01) higher number of bovine oocytes developed to the blastocyst stage after incubation with K, Ele and Ech at 1.0 µg/ml, and was not different (P > 0.01) from IVF control. Fertilization was significantly reduced (P < 0.01) at all concentrations of K, Ele and Ech as compared to IVF control. No reduction (P > 0.05) was observed in EB (nonRGD) treated oocytes. These results support the involvement of a disintegrin–integrin interaction at fertilization in the bovine resulting in activation and subsequent development. Mol. Reprod. Dev. 74: 88–96, 2007. © 2006 Wiley‐Liss, Inc.
Requirements of Src family kinase during meiotic maturation in mouse oocyte
Authors: Zheng Ke‐Gang , Meng Xiao‐Qian , Yang Yong , Yu Yuan‐Song , Liu Dai‐Cheng , Li Yun‐Long 
Published: August 2006

AbstractThe Src family kinase (SFK) is important in normal cell cycle control. However, its role in meiotic maturation in mammalian has not been examined. We used confocal microscope immunofluorescence to examine the in vitro dynamics of the subcellular distribution of SFK during the mouse oocyte meiotic maturation and further evaluated the functions of SFK via biochemical analysis using a specific SFK pharmacological inhibitor, PP2. Our results showed that nonphospho‐SFK was absent in oocyte upon its release from follicle. Nonphospho‐SFK appeared in cytoplasm 0.5 hr after the release of oocyte and translocated to germinal vesicle (GV) before germinal vesicle breakdown (GVBD). After GVBD, nonphospho‐SFK colocated with condensed chromosomes. In occyte at metaphase I (MI) and telophase I, nonphospho‐SFK accumulated in the cortex and the cleavage furrow respectively besides its existence in cytoplasm in both stages. In oocyte at metaphase II (MII), nonphospho‐SFK concentrated at the aligned chromosomes. In contrast, phospho‐SFK was absent in oocyte until 1 hr after its release from the follicle. Phospho‐SFK accumulated in the GV, the cortex, and cytoplasm immediately prior to GVBD. After GVBD, phospho‐SFK evenly distributed in oocyte. In oocyte at MII, phospho‐SFK localized throughout the cytoplasm and under the egg member. When the SFK activity was inhibited, the oocyte failed to initiate GVBD, could not go into MII, and could not extrude the first polar body. Our results demonstrated that SFK is required for meiotic maturation in mouse oocyte. Mol. Reprod. Dev. 74: 125–130, 2007. © 2006 Wiley‐Liss, Inc.
Reversible and irreversible effects of chemical fixation on the NMR properties of single cells
Authors: Purea Armin , Webb Andrew G. 
Published: August 2006

AbstractThe effects of chemical fixation are known to alter MR parameters, such as relaxation times and the apparent diffusion coefficient (ADC) of water. It is often assumed that such changes are reversible after samples have been reimmersed in a buffer solution for a sufficient period of time. In this study we characterize the changes associated with fixation of single Xenopus laevis oocytes and their subsequent reimmersion in buffer. Substantial reductions in both T1 and T2 values were measured for all compartments of the cell after fixation, with the cytoplasm showing larger changes than the nucleus. After reimmersion in buffer, there were small but statistically significant differences in MR parameters between fresh and reimmersed cells. Experiments with a gadolinium (Gd) contrast agent showed evidence of irreversible changes in the permeability of cellular membranes to small molecules. Magn Reson Med, 2006. © 2006 Wiley‐Liss, Inc.
Absolute quantification of myocardial perfusion under adenosine stress
Authors: Ritter Christian , Brackertz Anita , Sandstede Jörn , Beer Meinrad , Hahn Dietbert , Köstler Herbert 
Published: August 2006

AbstractThe prebolus technique allows one to quantify perfusion in the human heart with a low variability by means of MRI. In this study the prebolus technique was used to determine quantitative perfusion values in the human heart under adenosine stress and to measure the myocardial perfusion reserve (MPR). Twelve healthy volunteers were examined using the multislice prebolus technique with 1/4 cc Gd‐BOPTA. Signal intensity (SI) time courses were evaluated in 288 manually segmented sectors at rest and stress. Myocardial perfusion was determined by deconvolution of the SI time courses with the arterial input function (AIF) from the prebolus scan. The mean stress perfusion value was 1.78 ± 0.53cc/g/min, and the mean rest perfusion was 0.52 ± 0.11cc/g/min, resulting in a mean MPR of 3.59 ± 1.26. The measured values correlate well with data from animal models and human positron emission tomography (PET) studies. Magn Reson Med, 2006. © 2006 Wiley‐Liss, Inc.
Adductor T and H reflexes in humans
Authors: Ertekin Cumhur , Bademkiran Fikret , Tataroglu Cengiz , Aydogdu Ibrahim , Karapinars Nevin 
Published: August 2006

AbstractIn the belief that changes in the adductor reflex (AR) may be helpful in evaluating lumbar root and plexus lesions, expression of the AR was studied in 43 healthy human subjects. ARs elicited with an electronic reflex hammer were recorded from the inner side of the proximal thigh using needle and surface electrodes, and patellar reflexes (PRs) were recorded simultaneously. These reflexes were obtained by tapping the ipsilateral medial aspect of the knee, the contralateral patellar tendon, the ipsilateral and contralateral anterior superior iliac spines, and the Achilles tendon. The H reflex of the obturator nerve was also evaluated in 17 cases. ARs were evoked consistently by tapping the ipsilateral medial aspect of the knee and by contralateral patellar tap, and by tapping ipsilateral and contralateral anterior superior iliac spines when a needle recording electrode was used. Sometimes an Achilles tendon tap also elicited the AR ipsilaterally. By contrast, the PR could only be elicited by a tap to the ipsilateral patellar tendon. ARs have somewhat different features than other well‐known tendon reflexes such as the PR and are recorded consistently when a needle electrode is used, being elicited from both distal and proximal areas of the legs by tapping the Achilles tendon or anterior superior iliac spines unilaterally or bilaterally. Their role in evaluating lumbar root disease and monitoring adductor spasticity merits investigation. Muscle Nerve, 2006
Efficient generation of cycle time‐throughput curves through simulation and metamodeling
Authors: Yang Feng , Ankenman Bruce , Nelson Barry L. 
Published: August 2006

AbstractA cycle time‐throughput (CT‐TH) curve, which quantifies the relationship of long‐run average cycle time to throughput rate, plays an important role in strategic planning for manufacturing systems. In this paper, a nonlinear regression metamodel supported by queueing theory is developed to represent the underlying CT‐TH curve implied by a manufacturing simulation model. To estimate the model efficiently, simulation experiments are built up sequentially using a multistage procedure. Extensive numerical experiments are presented to demonstrate the effectiveness of the proposed procedure. © 2006 Wiley Periodicals, Inc. Naval Research Logistics, 2007
Paternal occupational exposure to electro‐magnetic fields as a risk factor for cancer in children and young adults: A case‐control study from the North of England
Authors: Pearce Mark S. , Hammal Donna M. , Dorak M. Tevfik , McNally Richard J.Q. , Parker Louise 
Published: August 2006

AbstractBackgroundNumerous studies have implied that paternal occupational exposures, in particular electromagnetic fields (EMF) and ionizing radiation, may be involved in the etiology of childhood cancers. We investigated whether an association exists between paternal occupations at birth involving such exposures and cancer risk in offspring, using data from the Northern Region Young Persons' Malignant Disease Registry (NRYPMDR).ProcedureCases (n = 4,723) were matched, on sex and year of birth, to controls from two independent sources: (i) all other patients from the NRYPMDR with a different cancer, (ii) 100 cancer‐free individuals per case from the Cumbrian Births Database. An occupational exposure matrix was used to assign individuals to exposure groups.ResultsThere was an increased risk of leukemia among the offspring of men employed in occupations likely to be associated with EMF or radiation exposures (OR 1.31, 95% CI 1.02–1.69), particularly in males aged less than 6 years (OR 1.81, 95% 1.19–2.75). No significant association was seen in females. Increased risks were also seen for chondrosarcoma (OR 8.7, 95% CI 1.55–49.4) and renal carcinoma (OR 6.75, 95% CI 1.73–26.0). These associations were consistent between control groups and remained after adjustment for socio‐economic status.ConclusionsThis large case‐control study identified a significantly increased risk of leukemia among the offspring of men likely to have been occupationally exposed to EMF, with differing associations between males and females. Increased risks of chondrosarcoma and renal carcinoma were also seen, although based on smaller numbers. Further detailed investigations in this area are required to understand this association. Pediatr Blood Cancer 2007;49:280–286. © 2006 Wiley‐Liss, Inc.
Distinct fluctuations of ammonia levels during asparaginase therapy for childhood acute leukemia
Authors: Steiner M. , Attarbaschi A. , Kastner U. , Dworzak M. , Haas O.A. , Gadner H. , Mann G. 
Published: August 2006

AbstractBackgroundThe enzyme asparaginase (L‐Asp) catalyses the hydrolysis of the non‐essential amino acids asparagine and glutamine to aspartic and glutamic acid and ammonia. Ammonia therefore represents a direct metabolite of the biochemical reaction induced by this enzyme. However, data regarding the dynamics and clinical relevance of ammonia levels during L‐Asp therapy are lacking.ProcedureWe prospectively followed the dynamics of ammonia levels during L‐Asp containing induction therapy according to the ALL‐BFM 2000 protocol in 10 pediatric patients with acute lymphoblastic leukemia (ALL), in order to assess the possible relevance of ammonia levels for clinical practice and its use as a possible surrogate parameter of L‐Asp enzyme activity.ResultsWe observed a significant elevation of ammonia levels 1 day after intravenous L‐Asp administration with ammonia levels reaching up to the seventh fold of normal values, followed by a steep decline to basal values within another 2 days, resulting in an undulating course of ammonia concentrations during L‐Asp containing induction treatment.ConclusionsAlthough there are potential neurotoxic properties of ammonia, central nervous system (CNS) toxicity has not been observed in our study and is generally not seen as a common side effect of L‐Asp therapy. Furthermore, due to the characteristic fluctuation profile, ammonia levels may represent a suitable surrogate parameter of L‐Asp enzyme activity and may enable the monitoring of silent inactivation of L‐Asp. Pediatr Blood Cancer 2007;49:640–642. © 2006 Wiley‐Liss, Inc.
Extreme thrombocytosis associated with transient myeloproliferative disorder with Down Syndrome with t(11;17)(q13;q21)
Authors: Park Eun‐Sil , Kim So‐Young , Yeom Jung‐Suk , Lim Jae‐Young , Park Chan‐Hoo , Youn Hee‐Shang 
Published: August 2006

AbstractA female patient with Down Syndrome (DS) had neonatal thrombocytosis with platelet counts exceeding 2,000 × 103/µL and transient myeloproliferative disorder (TMD). Platelet counts remained elevated the first 2 months of life. A translocation located between chromosomes 17 and 11 was observed. We describe a patient with thrombocytosis and TMD showing an 11q13 translocation. The leukocytosis and thrombocytosis improved after an exchange transfusion. Pediatr Blood Cancer 2008;50:643–644. © 2006 Wiley‐Liss, Inc.