bluuebunny/crossref_metadata_2025_split huggingface dataset:
Photon trapping model within a fiber Bragg grating for dynamic optical tweezers use
Authors: Yupapin P. P. , Saktioto T. , Ali J. 
Published: February 2010

AbstractWe propose a new potential model that can be used to describe the trapped photon within a fiber Bragg grating, which is trapped by the potential well. We found that the localized, i.e., trapped soliton within the fiber Bragg grating is seen. The soliton well within a dark soliton has been observed using the forward and backward pumping of the S‐band erbium doped fiber. The process of stimulated Brillouin scattering is described as a nonlinear interaction between the pump and the Stokes fields through an acoustic wave. As both energy and momentum are conserved during each scattering process, the annihilation of pump photon creates Stokes photon and an acoustic phonon simultaneously. The destruction interference is seen as the dark soliton valley, i.e., well, which is surrounded by the intense optical field, which is formed by the potential well. The application of such a behavior is that the dynamic probing tool known as an optical tweezers can be used. Moreover, the novel aspect for dynamic optical tweezers is plausible, where the trapped pulse or molecule can be moved, i.e., transportation. © 2010 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52:959–961, 2010; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.25043
Rectangular M‐PRS structure for sectoral base station antenna with vertical polarization
Authors: Hajj Mohamad , Rodes Emmanuel , Serhal Dina , Chreim Hassan , Arnaud Eric , Jecko Bernard 
Published: February 2010

AbstractThis article presents a new method to realize sectoral antennas for base station by incorporating metallic partially reflecting surface (M‐PRS).The main idea consists in inserting simple radiating elements, as patches, inside a Fabry‐Perot cavity resonator. This consists of a ground plane, where the feeding system rests covered by a rectangular M‐PRS. A patch array is used as a feeding structure to enhance directivity and radiation bandwidth. A rectangular M‐PRS antenna for the uplink UMTS frequency band [1.92–1.98 GHz] working in vertical polarization is designed, and its performances are disclosed. Finally, a prototype is realized and the experimental measurements are compared to the simulated ones. © 2010 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52:990–994, 2010; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.25044
A printed circular‐ring monopole antenna with band‐notched feature for UWB application
Authors: Xiao Jin‐Xiang , Wang Mei‐Fang , Li Guo‐Jian 
Published: February 2010

AbstractA printed circular‐ring monopole antenna with band‐notched feature for ultra‐wideband application has been presented and investigated. The band‐notched characteristic is achieved by attaching a C‐shaped short‐circuited stub. Experimental results show that the proposed antenna meets the requirement of wide‐working bandwidth of 3.1–10.6 GHz with voltage‐standing wave ratio <2, while avoiding the interference with the 5 GHz wireless local area network band. Transfer functions of the antenna systems are given experimentally, and the parametric studies are performed numerically in this article. © 2010 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52:827–830, 2010; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.25050
Internal wireless wide area network clamshell mobile phone antenna with reduced ground plane effects
Authors: Li Wei‐Yu , Wong Kin‐Lu 
Published: February 2010

AbstractAn internal wireless wide area network (WWAN) antenna applied in a clamshell mobile phone having an equivalent band‐stop circuit at the hinge to decrease the upper ground plane effects of the mobile phone on the antenna performances is presented. The internal WWAN antenna in this study is a small‐size printed monopole mounted at the bottom of the main ground. This band‐stop circuit can perform a parallel resonance at around 900 MHz and leads to high impedance seen into the upper ground in the 900 MHz band, which greatly decreases the excited surface currents on the upper ground. At around 1900 MHz, owing to its shorter wavelength, the surface currents on the upper ground excited by the internal antenna on the main ground are small for both the traditional and proposed clamshell mobile phone structures. Hence, over the WWAN operating bands, the presence of the upper ground shows very small effects on the impedance matching and radiation characteristics of the antenna on the main ground. The SAR and HAC studies on the proposed clamshell mobile phone structure are also presented. © 2010 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52:922–930, 2010; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.25056
Application of varying‐frequency amplitude‐only technique for electrical characterization of hardened cement‐based materials
Authors: Hasar U. C. , Simsek O. , Aydin A. C. 
Published: February 2010

AbstractThere is a need for characterization of cement‐based materials by a simple and inexpensive microwave measurement setup for industrial applications. Nondestructive and contactless characterization of these materials can be realized by free‐space reflection/transmission measurements. Reflection measurements are convenient for applications where the sensor can only be placed on one side of the material such as measurements on pavement, backfilled concrete wall, and roadway. In this article, we use varying‐frequency amplitude‐only technique for electrical characterization of cement‐based materials using reflection measurements at three different frequencies. We have demonstrated that measurements by the proposed method are in good agreement with those obtained from reflection and transmission measurements. © 2010 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52:801–805, 2010; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.25057
Polarization independent planar silver superlens with switchable anisotropic layer
Authors: Mei Hao , Chang Yun‐Ching , Yang Chia‐En , Zhu Yong , Yin Stuart , Luo Claire 
Published: February 2010

AbstractIn this article, the imaging effect of planar silver superlens is quantitatively analyzed and the optimized structure that has the highest spatial resolution and contrast ratio is identified. To defeat the intrinsic restriction on the polarization direction of the illuminating light, we investigate a new structure of superlens that contains a switchable anisotropic layer. Simulation results show that the new superlens can achieve very good imaging result with both transverse electric polarized light when the switchable anisotropic layer is set at the anisotropic state and the transverse magnetic polarized light when the switchable anisotropic layer is set at the isotropic state. © 2010 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52:809–812, 2010; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.25070
Ultra‐wideband microstrip antenna with enhanced impedance bandwidth
Authors: Naser‐Moghadasi Mohammad , Sadeghzadeh R.A. , Katouli Morteza , Virdee Bal S. 
Published: February 2010

AbstractThis article presents a novel ultra‐wideband (UWB) microstrip‐fed planar monopole antenna composed of a rectangular patch and a ground‐plane π‐shape slot structure. Impedance bandwidth of the proposed antenna is ∼147% over an UWB frequency range between 3 and 19.7 GHz satisfying FCC's requirements for an antenna by a factor in excess of twofold. © 2010 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52:870–873, 2010; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.25072
Analysis of disk patch antenna with parasitic elements in single and multilayer structures
Authors: Ansari J. A. , Yadav Nagendra Prasad , Singh Prabhakar 
Published: February 2010

AbstractIn this article, the analysis of disk patch antenna with two parasitic elements in single layer and in multilayer layer configurations is presented. The bandwidth of the antenna significantly depends on gap separation (s) and thicknessh2. Bandwidth of the antenna in single‐layer gap‐coupled structure is found to be 19.01%, and it improves up to 45.57% in multilayer patch. Further, an enhanced radiation of 8.33 dB is achieved in multilayer patch as compared with simple disk patch. The theoretical results obtained from the analysis are compared with IE3D simulated and experimental results, which are in good agreement. © 2010 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52:865–870, 2010; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.25076
High‐performance W‐band MMIC mixer module using GaAs metamorphic HEMT
Authors: An Dan , Kim Sung‐Chan , Rhee Jin‐Koo 
Published: February 2010

AbstractIn this letter, we report on a high‐performance 94‐GHz millimeter‐wave monolithic integrated circuit (MMIC) mixer module using 0.1‐μm metamorphic high electron mobility transistors. A modified resistive mixer with a RF amplifier was proposed in this work for low conversion loss and high LO‐RF isolation. The MMIC mixer module was fabricated using a MMIC chip and CPW‐waveguide transitions. The fabricated mixer chip and module showed a low conversion loss of 6.3 and 9.5 dB, and LO‐RF isolations of 24.8 and 30.4 dB at 94 GHz, respectively. This results are superior to those of previously W‐band (75–110 GHz) MMIC mixers. © 2010 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52:815–817, 2010; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.25081
The design of integrated 0.13‐μm CMOS receiver for ultra‐wideband systems
Authors: Park Bonghyuk , Lee Kwangchun , Choi Sangsung , Hong Songcheol 
Published: February 2010

AbstractA fully integrated 0.13‐μm CMOS receiver for ultra‐wideband systems is implemented. This receiver enables eight bands of operation covering 3.1–9.0 GHz. The system, based on the Multiband OFDM Alliance standard proposal and consisting of a direct‐conversion receiver chain and required noise figure, is discussed. The average conversion gain and input P1dB are 67.3 dB and −25.4 dBm, respectively. The shunt‐series feedback low‐noise amplifier provides a receiver front‐end noise figure of 7.1–9.5 dB over the entire band. The mixer, based on a folded‐cascode topology, also implements a four‐stage programmable gain amplifier. A fabricated die has been bonded and molded onto PCB for characterization. The receiver chip dissipates 48 mA from 1.2 V power supply. © 2010 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52:841–845, 2010; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.25083
Study of an ultra‐wide stopband microstrip bandpass filter with half asymmetric stepped impedance open stub resonators
Authors: Zheng Guangming , Lin Weigan 
Published: February 2010

AbstractIn this letter, a novel microstrip bandpass filter (BPF) with half asymmetric resonators is presented.With Filter structure and capacitively loaded coupling, a wide bandwidth with sufficient rejection level can be achieved easily. The electromagnetic simulation is used, and the prototype of the BPF is fabricated and measured. Comparisons of simulated results and experimental data are shown; moreover, good match validates the proposed filter. © 2010 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52:845–847, 2010; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.25084
A low profile post‐type monopole antenna with a ring and four small posts
Authors: Jang Yong‐Woong , Go Hyun‐Chul , Lee Sang‐Woo 
Published: February 2010

AbstractThis article presents a low profile wideband top‐loading monopole antenna with a ring and four small post‐shape plates. And an inserted ring‐shaped plate makes a gap from the post element and leads to enhance wider and higher gain than the conventional top‐loading monopole. Four small post‐shape plates also lead to obtain higher antenna gain, uniformity radiation patterns. Moreover, top‐load also leads to reduce the height of antenna (a small antenna size). The experimental impedance bandwidth is approximately 1.55–2.73 GHz (% bandwidth is 55.14%) below with VSWR ≤2.0. This antenna also presents a wideband, a uniformity radiation patterns characteristic, respectively. The proposed antenna can be applied PCS, DCS, IMT‐2000, WLL. © 2010 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52:910–912, 2010; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.25086
Characterization of AOT capped cadmium sulfide quantum dots using fluorescence spectroscopy
Authors: Daniels‐Race Theda , Thiruvengadam Sathish 
Published: February 2010

AbstractColloidal cadmium sulfide quantum dots (Q‐CdS) capped with dioctyl sulfosuccinate (AOT) were synthesized and characterized. Fluorescence spectroscopy is used to verify quantized dot formation, size, and emission wavelength. Optical characterization of this form is necessary for fundamental investigation of hybrid electronic materials and their potential use in next‐generation devices. © 2010 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52:912–913, 2010; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.25087
SB431542 treatment promotes the hypertrophy of skeletal muscle fibers but decreases specific force
Authors: Watt Kevin I. , Jaspers Richard T. , Atherton Phillip , Smith Ken , Rennie Michael J. , Ratkevicius Aivaras , Wackerhage Henning 
Published: February 2010

AbstractThe small molecule inhibitor SB431542 inhibits activin type I receptors. The muscle growth‐inhibitor myostatin binds to and signals via these receptors. The aim of this study was to test the hypothesis that SB431542 can inhibit myostatin‐related Smad signaling and induce muscle growth in cultured C2C12 myotubes and increase growth and specific force in cultured Xenopus muscle fibers. The effect of SB431542 was assessed in vitro on C2C12 myotubes and ex vivo using mature Xenopus muscle fibers. SB431542 treatment reduced myostatin‐induced C‐terminal Smad2 phosphorylation and resulted in the formation of enlarged myotubes. However myogenin expression was unchanged, while p70 S6k phosphorylation at Thr389, total myosin heavy chain, and the rate of protein synthesis were all reduced. Mature Xenopus muscle fibers that were treated with SB431542 had a higher fiber cross‐sectional area but decreased specific force production than control. SB431542 can initially antagonize myostatin signaling, but long‐term unexpected signaling effects occur. Muscle fibers hypertrophy, but their specific force decreases compared to control. Muscle Nerve, 2010
Induction of myogenic differentiation by SDF‐1 via CXCR4 and CXCR7 receptors
Authors: Melchionna Roberta , Di Carlo Anna , De Mori Roberta , Cappuzzello Claudia , Barberi Laura , Musarò Antonio , Cencioni Chiara , Fujii Nobutaka , Tamamura Hirokazu , Crescenzi Marco , Capogrossi Maurizio C. , Napolitano Monica , Germani Antonia 
Published: February 2010

AbstractThe stromal cell–derived factor (SDF)‐1/CXC receptor 4 (CXCR4) axis has been shown to play a role in skeletal muscle development, but its contribution to postnatal myogenesis and the role of the alternate SDF‐1 receptor, CXC receptor 7 (CXCR7), are poorly characterized. Western blot analysis and real‐time polymerase chain reaction (PCR) were performed to evaluate in vitro the effect of SDF‐1 and CXCR4 and CXCR7 inhibition on myogenic differentiation. Proliferating myoblasts express CXCR4, CXCR7, and SDF‐1; during myogenic differentiation, CXCR4 and CXCR7 levels are downregulated, and SDF‐1 release is decreased. SDF‐1 anticipates myosin heavy chain accumulation and myotube formation in both C2C12 myoblasts and satellite cells. Interestingly, inhibition of CXCR4 and CXCR7 signaling, either by drugs or RNA interfererence, blocks myogenic differentiation. Further, the CXCR4 antagonist, 4F‐benzoyl‐TN14003, inhibits myoblast cell cycle withdrawal and decreases the retinoblastoma gene (pRb) product accumulation in its hypophosphorylated form. Our experiments demonstrate that SDF‐1 regulates myogenic differentiation via both CXCR4 and CXCR7 chemokine receptors. Muscle Nerve 000:000–000, 2010
Myopathy and parkinsonism in phosphoglycerate kinase deficiency
Authors: Sotiriou Evangelia , Greene Paul , Krishna Sindu , Hirano Michio , DiMauro Salvatore 
Published: February 2010

AbstractA 25‐year‐old man with exertional myoglobinuria had no evidence of hemolytic anemia, but he had severe parkinsonism that was responsive to levodopa. Phosphoglycerate kinase (PGK) activity was markedly decreased in muscle, and molecular analysis of thePGK1gene identified the p.T378P mutation that was recently reported in a patient with isolated myopathy. This case reinforces the concept that PGK deficiency is a clinically heterogeneous disorder and raises the question of a relationship between PGK deficiency and idiopathic juvenile Parkinson disease. Muscle Nerve, 2010
Muscle weakness and atrophy are associated with decreased regenerative capacity and changes in mTOR signaling in skeletal muscles of venerable (18–24‐month‐old) dystrophic mdx mice
Authors: Mouisel E. , Vignaud A. , Hourdé C. , Butler‐Browne G. , Ferry A. 
Published: February 2010

AbstractThe muscles of mdx mice progressively deteriorate with age. We wanted to know whether this is associated with a decrease in regenerative capacity and/or changes in the mammalian target of rapamycin complex (mTOR) signaling pathway. Muscles of mdx mice aged 5 weeks, 5, 12, and 18–24 months were studied. Maximal force and muscle weight of the older mice were decreased as compared to younger adult mice. Activation of the mTOR signaling pathway, i.e., phosphorylation of Akt (also known as protein kinase B) and ribosomal protein S6 was also reduced in the older mice. Moreover, 14 days after cardiotoxin injury the degree of recovery of maximal force and muscle weight were less in the older mice. In contrast to younger mice, there was also activation of the mTOR pathway during regeneration in the older mice. Progressive muscle weakness and atrophy in mdx mouse muscle is associated with a decline in regenerative potential and changes in activation of the mTOR signaling pathway. Muscle Nerve 000: 000–000, 2010
Organizational determinants of work outcomes and quality care ratings among Army Medical Department registered nurses
Authors: Patrician Patricia A. , Shang Jingjing , Lake Eileen T. 
Published: February 2010

AbstractThe Practice Environment Scale of the Nursing Work Index, the Maslach Burnout Inventory, and several single‐item measures were administered to registered nurses (RNs) working within 23 U.S.‐based Army Medical Department (AMEDD) hospitals. Data were analyzed with logistic regression for nested data. Unfavorable nursing practice environments had a substantial association with job dissatisfaction (OR 13.75, p < .01), emotional exhaustion (OR 12.70, p < .01), intent to leave (OR 3.03, p < .01), and fair to poor quality of care (OR 10.66, p < .01). This study provides the first system‐wide analyses of nursing practice environments in AMEDD hospitals in the U.S. Similar to findings in civilian samples, poor quality work environments are associated with less favorable RN work outcomes and quality of care ratings. © 2010 Wiley Periodicals, Inc. Res Nurs Health 33:99–110, 2010
Characterization of polyether‐poly(methyl methacrylate)‐lithium perchlorate blend electrolytes
Authors: Barbosa Paula C. , Rodrigues Luísa C. , Silva Maria Manuela , Smith Michael J. , Valente Prudência B. , Gonçalves Alexandra , Fortunato Elvira 
Published: February 2010

AbstractSolid polymer electrolyte (SPE) systems based on interpenetrating blends of poly(ethylene oxide‐co‐propylene oxide) and poly(methyl methacrylate) host matrices, with lithium perchlorate as guest salt, were prepared. These electrolytes were presented as free‐standing films, and their thermal and electrochemical properties were characterized by conductivity and electrochemical stability measurements.The properties of the interpenetrating blends of poly(ethylene oxide‐co‐propylene oxide) and poly(methyl methacrylate) host matrices as the electrolyte component of a solid‐state electrochromic device are reported and the results obtained suggest that this electrolyte provides an encouraging performance in this application. The most conducting electrolyte composition of this SPE system is the formulation designated as SPE2‐0PC (5.01 × 10−4 S cm−1 at about 57°C). The lowest decomposition temperature was registered with the SPE6‐15PC composition (233°C). The average transmittance in the visible region of the spectrum was above 41% for all the samples analyzed. After coloration the device assembled with 71 wt% PC presented an average transmittance of 15.71% and an optical density at 550 nm of 0.61. Copyright © 2010 John Wiley & Sons, Ltd.
Simultaneous quantification of 14 bioactive constituents in Forsythia Suspensa by liquid chromatography–electrospray ionisation–mass spectrometry
Authors: Cui Yang , Wang Qiao , Shi Xiaowei , Zhang Xiaowei , Sheng Xiaona , Zhang Lantong 
Published: February 2010

AbstractIntroduction – Forsythia suspensa is a commonly used traditional Chinese medicine including phenylethanoid glycosides, lignans, flavonoids, terpenes and volatile oils. Quantification of multi‐components is important for the quality control of Forsythia suspensa.Objective – To establish a liquid chromatography–electrospray ionisation–mass spectrometry method for simultaneous quantification of 14 bioactive constituents of Forsythia suspensa in different places of China and different parts of this herb.Methodology – The optimal chromatographic conditions were achieved on a Kromasil C18 column (150 ¥ 4.6  mm, 5  mm) with gradient elution of methanol, acetonitrile and 0.1% formic acid in 27  min. Detection was performed in negative ionisation mode by monitoring the precursor–product combination in multiple reaction monitoring (MRM) mode. The validation of the method included tests of linearity, sensitivity, precision, repeatability, stability and accuracy.Results – All calibration curves showed good linear regression (r > 0.9990) within test ranges. The established method showed good precision and accuracy with overall intra‐day and inter‐day variations of 0.7–4.3 and 1.1–3.9% respectively, and overall recoveries of 96.65–101.2% for the compounds analysed.Conclusion – The proposed method was successfully applied for the quantitative analysis of 14 constituents in 12 Forsythia suspensa samples. Copyright © 2010 John Wiley & Sons, Ltd.