bluuebunny/crossref_metadata_2025_split huggingface dataset:
Environment‐independent liquid level sensing based on fiber‐optic displacement sensors
Authors: Yang H. Z. , Harun S. W. , Arof H. , Ahmad H. 
Published: October 2015

AbstractA new fiber‐optic liquid‐level sensor (LLS) for continuous monitoring of the liquid level is proposed using a fiber‐optic displacement sensor (FODS). A float is used to measure the level of liquid in the tank and it is connected to the FODS probe to convert the variation of the liquid level into a displacement change. The performance of the LLS is investigated for two different FODSs with a concave and a flat mirror target. With a concave mirror, six measurement slopes within a range of 25 mm are observed with the highest sensitivity of 1.3015 mV/mm. With a flat mirror, two measurement slopes are observed with the highest sensitivity of 1.4533 mV/mm and the longest measurement range of 4.8 mm. © 2011 Wiley Periodicals, Inc. Microwave Opt Technol Lett 53:2451–2453, 2011; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26358
Hybrid superelliptic horn
Authors: Malherbe J. A. G. 
Published: October 2015

AbstractThe waveguide horn with elliptic flare has been shown to exhibit superior radiation and impedance properties. In this article, a horn is described that flares with a hybrid superelliptical profile. The radiation patterns in the principal planes are identical up to the ‐10‐dB points. © 2011 Wiley Periodicals, Inc. Microwave Opt Technol Lett 53:2713–2716, 2011; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26360
Design of modified ground square‐shaped fractal antenna for UWB applications
Authors: Kumar Raj , Hake Shahadev 
Published: October 2015

AbstractThis article presents the design of modified ground square‐shaped fractal antenna. The prototype antenna is designed and fabricated on FR4 substrate of dielectric constant εr = 4.3 and thickness h = 1.53 mm. The proposed antenna is excited using coplanar waveguide feed. The experimental result of square‐shaped fractal antenna exhibits the excellent ultra‐wideband (UWB) characteristic corresponding to impedance bandwidth of 148.13 % from 2.235 to 15.0 GHz, exceeding Federal Communication Commission (FCC) frequency range with a return‐loss performance S11 = −10 dB. The simulated results are in good agreement with the experimental results. The experimental radiation patterns of this square‐shaped fractal antenna are omni‐directional in H‐plane and bidirectional in E‐plane. This proposed antenna can be useful for UWB system, microwave imaging and vehicular radar. © 2011 Wiley Periodicals, Inc. Microwave Opt Technol Lett 53:2589–2592, 2011; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26365
Dual Band‐Notched Rectangular Monopole Antenna for Ultra Wideband Applications
Authors: Indu A. K. Gautam , Kanaujia Binod Kr 
Published: October 2015

ABSTRACTA compact microstrip fed monopole antenna with dual band‐notch function is proposed for ultrawideband applications. The antenna consists of a rectangular radiating patch one side and solid ground up to the half length of the antenna on the other side. The band notch functions are achieved by etching two back‐to‐back C‐shaped slot in the rectangular metal radiating patch. Combination of each notch element on the UWB antenna is aimed for providing dual band rejection function at WLAN 2 (5.15–5.825 GHz) and ITU 8 GHz (8.025–8.4 GHz). The measured results reveal that the presented dual band‐notch monopole antenna offers a very wide bandwidth with two notched bands from 5.2 to 5.96 GHz and 7.84 to 8.4 GHz. The prototype with overall size of 26 × 32 × 762 mm3 achieves good impedance matching, voltage standing wave ratio, constant gain, and stable radiation patterns, over an entire operating bandwidth of 2.8–12.16 GHz. © 2013 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:3029–3033, 2013
Multiband Frequency Selective Surfaces with Simple Modification of a Rectangular Patch Element
Authors: Campos A. L. P. S. , Silva T. L. , Gomes Neto A. 
Published: October 2015

ABSTRACTA simple modification in a rectangular patch element is exploited to design frequency selective surfaces (FSS) for multiband bandstop filter operation. The use of the modified rectangular patch elements enables the adjustment of FSS parameters (resonant frequency and −10‐dB bandwidth) according to the length and position of the slot but without modifying their original size. Transmission properties of proposed FSS are characterized by means of simulations and measurements. Four FSS prototypes were fabricated and measured. The obtained results show an interesting multiband behavior. © 2013 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:2943–2946, 2013
A Compact Dual‐Mode Dual‐Band Bandpass Filter Using Stepped‐Impedance Open‐Loop Resonators and Center‐Loaded Resonators
Authors: Yao Z. , Wang C. , Kim N. Y. 
Published: October 2015

ABSTRACTIn this article, a compact dual‐mode dual‐band bandpass filter is proposed by using two modified stepped‐impedance open‐loop resonators and center‐loaded bars. The dual‐mode resonators are created by loading two center‐loaded bars, and this process is investigated through dual‐mode filter analysis. The external quality factor and the coupling coefficient is introduced and analyzed to optimize the proposed filter. A low insertion loss and high return loss dual‐mode dual‐band filter is designed and fabricated with a compact structure. Three transmission zeros are created near the passband, leading to a high selectivity. Two passbands are centered at 3.88 and 5.35 GHz with an insertion loss of −0.38 and −1.03 dB, respectively, and 3‐dB fractional bandwidths of 12.4 and 8.6% are obtained. The measured return loss is higher than −24.28 and −19.33 dB at the two resonant frequencies, respectively. The simulated and measured results are in good agreement, which verifies the design methodology. © 2013 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:3000–3005, 2013
Balanced Single Photon Avalanche Detector with Variode‐Based Spike Noise Cancellation
Authors: Zhang Yixin , Xie Fei , Yang Guowen , Zhang Xuping , Wang Shun 
Published: October 2015

ABSTRACTSpike noise cancellation is important for high‐speed single photon avalanche photodiode. In this article, we demonstrated a balanced single photon detector at 1.5 μm that contains one InGaAs/InP single photon avalanche photodiode and one matched variode. Suppression ratio of 27 dB can be achieved. At 253 K, detection efficiency of 13.9% is obtained with 1.06 × 10−5 per gate dark count probability and 4.3% after‐pulse probability at 100 MHz gating frequency. © 2013 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:2877–2879, 2013
A Quadruple‐Band CPW‐Fed Raster‐Shaped Monopole Antenna
Authors: Naser‐Moghadasi M. , Asadpor L. , Sadeghzadeh R. A. 
Published: October 2015

ABSTRACTA miniaturized quadruple‐band antenna with raster‐shaped patch is proposed. The proposed antenna can generate four separate impedance bandwidths to cover the 1.710–1.885, 1.850–1.990 GHz GSM operating bands, 2500–2690 GHz Extended UMTS operating band, 3650–3700 GHz and the 5.150–5825 GHz Wi‐Fi/Wireless Local Area Network (WLAN) band frequencies. The proposed coplanar waveguide‐fed antenna mainly consists of simple rectangular ground plane and developed raster‐shaped patch, which perform important role to produce all of four frequencies band. The designed antenna has a small overall size of 25 × 25 mm2 and operates over the frequency ranges, 1.7–1.97 GHz, 2.45–2.8 GHz, 2.94–3.68 GHz, and 5.1–6.2 GHz suitable for GSM, Extended UMTS and Wi‐Fi/WLAN application. There is good agreement between the measured and simulated results. Experimental results show that the antenna gives monopole‐like radiation patterns and good antenna gains over the operating bands. © 2013 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:3014–3018, 2013
A Compact CPW‐Fed Wide‐Slot Ultrawideband Antenna with Sharp Frequency Rejection Functions for Wlan Band and X‐Band
Authors: Li Yingsong , Li Wenxing , Yu Wenhua 
Published: October 2015

ABSTRACTIn this article, a coplanar waveguide (CPW)‐fed ultrawideband (UWB) antenna with two sharp frequency rejection functions is proposed. The dual band‐notched characteristic is realized by etching a stepped impedance split‐ring resonator (SISRR) and a stepped impedance resonator (SIR) in a circular radiating patch and a CPW transmission stripline, respectively. The central frequency of the two notch bands can be controlled by adjusting the SISRR and the SIR parameters. Simulation and experimental results obtained for this antenna show that it exhibits a good radiation behavior within the UWB frequency range and it also has the dual band‐notched characteristics in the wireless local‐area networks band and X‐band, which can mitigate the potential interference between UWB systems and the designated existing narrow‐band systems. © 2013 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:2972–2976, 2013
A Compact Multiband and Wideband Bioinspired Antenna for Wireless Mobile Devices
Authors: Ebnabbasi Khabat , Mohebbi Marjan 
Published: October 2015

ABSTRACTA compact multiband and wideband biologically inspired antenna with a shape borrowed from the creatures with curved antennae is presented. The radiator is symmetric coplanar striplines modeled based on a stepped Chebyshev transformer. The designed steps are smoothed through curve fitting. The flare's opening rate is set using the software to achieve the required resonant frequency. Multi tapers are used in order to enhance the impedance bandwidth and the coverage of wireless bands. Depending on the flare's opening rates multiband or wideband designs are resulted. The validity of the method is verified through simulations and measurements of an experimental design example. The fabricated antenna's center frequency is 2.4 GHz and the substrate is FR‐4 with a dielectric constant 4.35 and thickness of 3.2 mm. The proposed design covers the WiBro, wireless local area network, and Bluetooth bands. © 2013 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:3019–3022, 2013
Effects of Variation of the Substrate Thickness of Rectangular Slot Resonator with Multilayer
Authors: Caetano Leonardo M. , Neto Marinaldo P. S. , Andrade Humberto D. , Fernandes Humberto C. C. , Maia Hugo Michel C. A. 
Published: October 2015

ABSTRACTThis article presents a numerical and experimental analysis of rectangular slot resonators with multilayer of substrates. The transverse transmission line method, to determine the resonant frequency, was used. Optimization was performed starting of numerical analysis and the proposed device designed for a frequency of 3.31 GHz. Through an experimental investigation carried out, an analysis of the simulated versus measured was observed. The behaviors of the characteristic radiation with the variation of the height of the dielectric substrates are analyzed, presenting good results. © 2013 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:2931–2938, 2013
Neural Network Based Resonant Frequency Solver for Rectangular‐Shaped Shorting Pin‐Loaded Antennas
Authors: Can Sultan , Kapusuz Kamil Yavuz , Aydin Elif 
Published: October 2015

ABSTRACTThis study presents an artificial neural network (ANN) estimation of the operating frequencies of shorting pin‐loaded rectangular microstrip patch antennas. A feed forward back propagation multilayer perceptron neural network structure is applied in the study. The results are compared with the ones in the literature and the FEM based simulation results. The results of the operating frequencies obtained by using this method are in very good agreement with the experimental results presented in the literature. Several antennas are also simulated by a finite element method based solver and these results are also compared with the results of the proposed neural network model. The average error of the lower frequency obtained by this study has a decrement of 2.025% when compared to the FEM based simulation software and for the upper frequency this difference is 6.835%. The effects of permittivity of the antenna, size of the dimensions of the rectangular patch, and the shorting pin position are also evaluated. In the light of the ANN model and the relations obtained two antennas in the same shape are produced and the results of these antennas are presented as well. © 2013 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:3025–3028, 2013
Research on Compressive Sensing‐Based 3D Imaging Method Applied to GPR
Authors: Hui‐min Yu , Song Jiang 
Published: October 2015

ABSTRACTResults in theory of compressive sensing enable the reconstruction of sparse signals from a small set of nonadaptive linear measurements by solving a convex optimization problem. Considering the sparse structure of actual target space in ground penetrating radar (GPR) application, three‐dimensional imaging method based on random aperture compressive sensing (RACS) is brought up, which requires the GPR transceiver to record only a minimum amount of samples through incoherent measurement at each aperture point, and only to measure a small number of random apertures in x‐y plane of interested target space. Simulation and experimental results verified that the proposed RACS method allow much fewer measurement aperture points, and has much sparse imaging results with much higher resolution. © 2013 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:2896–2901, 2013
Ordnung in die Anorganik
Authors: Wild Ferdinand , Studer‐Rohr Irene , Zerbe Oliver , Alberto Roger 
Published: October 2015

AbstractIm Dezember jährt sich die Verleihung des Chemienobelpreises an Alfred Werner zum hundertsten Mal. Wer war der Mann, der die theoretischen Grundlagen der anorganischen Koordinationschemie legte?
Equivalent accelerated life testing plans for log‐location‐scale distributions
Authors: Liao Haitao , Elsayed Elsayed A. 
Published: October 2015

AbstractAccelerated life testing (ALT) is widely used to determine the failure time distribution of a product and the associated life‐stress relationship in order to predict the product's reliability under normal operating conditions. Many types of stress loadings such as constant‐stress, step‐stress and cyclic‐stress can be utilized when conducting ALT. Extensive research has been conducted on the analysis of ALT data obtained under a specified stress loading. However, the equivalency of ALT experiments involving different stress loadings has not been investigated. In this article, a log‐location‐scale distribution under Type I censoring is considered in planning ALT. An idea is provided for the equivalency of various ALT plans involving different stress loadings. Based on this idea, general equivalent ALT plans and some special types of equivalent ALT plans are explored. For demonstration, a constant‐stress ALT and a ramp‐stress ALT for miniature lamps are presented and their equivalency is investigated. © 2010 Wiley Periodicals, Inc. Naval Research Logistics, 2010
Racecadotril: new acute diarrhoea treatment for adults and children
Authors: Chaplin Steve , Al‐Hilou Hossam , Patel Kamal , Wilkinson Mark 
Published: October 2015

AbstractRacecadotril (Hidrasec) is a new class of drug for the treatment of acute diarrhoea. In our New products review, Steve Chaplin presents the clinical data relating to its efficacy and adverse events, and Drs Al‐Hilou, Patel and Wilkinson discuss its place in therapy.
Evaporated and solution deposited planar Sb2S3 solar cells: A comparison and its significance
Authors: Osorio Mayon Yahuitl , White Thomas P. , Wang Rongping , Yang Zhiyong , Catchpole Kylie R. 
Published: October 2015

Sb2S3 is an alternative emerging material for chalcogenide solar cells. In this paper, we compare planar solar cells in which the Sb2S3 absorber was deposited by either thermal evaporation or a solution based process. The planar inorganic solar cell with evaporated Sb2S3 has an efficiency of 1.7%. This is much higher than the efficiency of 0.8% for solution deposited Sb2S3, and the highest known reported efficiency for a planar Sb2S3 solar cell with a CuSCN hole conducting layer. The evaporated Sb2S3 film is sulfur‐rich, which results in flattening of the film surface after annealing at 300 °C, thereby reducing the likelihood of contact between the Sb2S3 and gold contact. In addition, the crystal size of the evaporated Sb2S3 film is about 30% larger than that of the solution deposited Sb2S3 and has different preferential crystal planes. These features make evaporation a promising deposition method for flat solar cells made from sulfur‐based semiconducting materials.Cross section image of the evaporated Sb2S3 solar cell with labels for each layer.
Zinc Oxide and Related Materials
Authors: Morhain Christian , Feuillet Guy , Santailler Jean‐Louis , Chauveau Jean‐Michel , Sallet Vincent 
Published: October 2015

AbstractThe 7th International Workshop on Zinc Oxide and Related Materials (IWZnO 2012) was held in France at the ACROPOLIS conference center in Nice on 11–14 September 2012. This workshop was organized by three different French laboratories: GEMAC in Versailles, LETI in Grenoble and CRHEA in Sophia Antipolis.Let us recall that the IWZnO international workshops are held every two years, and alternated so far between America, Asia and Europe. The last workshops took place in Dayton, USA (1999, 2002), Sendai, Japan (2004), Giessen, Germany (2006), Ann Arbor, USA (2008), Changchun, China (2010), and Nice, France (2012).Despite the global economic slowdown, a great number of high quality, varied and creative abstracts from 37 different countries were submitted for this workshop. We would like to warmly thank the International Program Committee of IWZnO 2012 for having undertaken the most challenging task of selecting papers. As a result, the workshop offered 13 oral sessions and 2 poster sessions, covering all aspects of ZnO, from basic to applied research, clearly emphasizing the unique physical and material properties of ZnO. Therefore, this workshop was the leading international forum for announcing and discussing advances in challenging scientific and technological issues related to ZnO, such as progress gained on growth, optical and electric properties, nanostructures, doping, theory, spintronics, and devices.This issue of physica status solidi contains 27 papers that were presented as oral and poster contributions, and 2 invited papers written by Professors Lambrecht and Shan. The proceedings have been divided in four sessions: “doping and applications”, “growth and heterostructures”, “nanostructures” and “magnetism”. We wish that the reader would appreciate to rediscover some of the best presented results at the workshop.We are very grateful to all the participants, contributors, our sponsors, the international committees as well as the referees, who made this workshop and proceedings a success. Finally, we hope that all of you keep a great memory of your stay in Nice, this famous historical old town sandwiched between the Mediterranean and the Alps.Nice, September 2013
Modeling of transient photocurrent in X‐ray detectors: application to a‐Se
Authors: Siddiquee Sinchita , Kabir M. Z. 
Published: October 2015

AbstractA mathematical model for transient photocurrent in X‐ray imaging detectors has been developed by considering charge carrier trapping under exponentially distributed carrier generation across the photoconductor. The model for the transient and steady‐state carrier distributions and hence the photocurrent has been developed by solving the carrier continuity equation for both holes and electrons. The model is applied to amorphous selenium (a‐Se) detectors for both chest radiography and mammography. We analyze the transient rise and decay of the photocurrent profile as a function of time. The quick rise and decay parts, and then the slow rise and decay parts of the photocurrent profile are due to the hole and electron transports, respectively. (© 2016 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
FDA Warning Letter: Avoidance and Advice
Authors: Winchell T. 
Published: October 2015

SummaryThis article provides an advisory approach regarding how to avoid an FDA Warning Letter following the receipt of a significant Form FDA 483. The focus is on the 483 response as it applies to GCP but can be applied to the response to the Warning Letter itself as well as a wider scope of GXP (GMP, GLP, GCP) inspection and audit responses. Copyright © 2011 John Wiley & Sons, Ltd.
Optimizing the Periodic Inspection Interval for a 1‐out‐of‐2 Cold Standby System Using the Delay‐Time Concept
Authors: Lu Xiaofei , Wang Wenbin , Yang Hongbing , Zuo Ming J. , Zhou Donghua 
Published: October 2015

AbstractIn this article, we deal with a 1‐out‐of‐2 system with a cold‐standby component. The failure process of these two components is statistically identical and characterized by the delay‐time concept, which divides the component's life into a two‐stage process with a normal stage from new to a defect initiation point and a following failure delay stage from this point to failure. A fixed interval periodic inspection is carried out to check whether the working component is defective or not. If a defect is identified, the working component is shut down and sent to be repaired. The repair shop capacity is limited for repairing one component only. If the repair shop is occupied by the standby component (under repair) when the working one is failed, the system is shut down. There are five scenarios of the state of the system at an inspection epoch, which are derived analytically. The expected total cost per unit time of the system consists of the expected cost caused by preventive repair, unplanned failure repair, and system downtime. In this article, these three costs are determined and the optimal inspection interval with respect to the minimum of the expected total cost per unit time is found. To incorporate a nonexponential distribution for the normal time, delay stages, and repair time of the components, the elapsed time in the normal time, delay stages, and repair time at inspection is taken into consideration. A stationary distribution of the elapsed time exists, and it is calculated by an iteration method. Copyright © 2012 John Wiley & Sons, Ltd.
The genomic sequences near the mir‐23b‐27b‐24‐1 cluster form G‐quadruplexes and are selectively bound by the natural alkaloid tetrandrine
Authors: Qi Yanchao , Chen Han , Tan Wei , Li Yanyan , Yuan Gu , Xu Ming 
Published: October 2015

RationaleAlthough the microRNAs miR‐23b, miR‐27b and miR‐24 are located in the same cluster, their expressions in various pathological states are not always comparable. By searching the genomic sequence around mir23b‐27b‐24‐1 in rat, we identified three potential G‐quadruplex sequences (PQS) which can fold into different types of G‐quadruplexes, including parallel or antiparallel. Natural alkaloids, tetrandrine (TET), displayed different binding affinity with the three G‐quadruplexes which may potentially regulate the expression of mir23b‐27b‐24‐1 cluster members.MethodsBoth electrospray ionization mass spectrometry (ESI‐MS) and circular dichroism (CD) spectroscopy were utilized to detect the formation of G‐quadruplexes. Six small molecules were screened by ESI‐MS for their binding affinity with three G‐quadruplexes, which were evaluated by their IRa values.ResultsThe results of ESI‐MS and CD experiments confirmed the formation of three G‐quadruplexes neighboring the mir23b‐27b‐24‐1 cluster; two of them adopted antiparallel G‐quadruplexes, another adopted a parallel G‐quadruplex. Screening of small molecules by ESI‐MS showed tetrandrine had selective binding affinity for the parallel G‐quadruplex. G‐quadruplex stabilization by tetrandrine was verified by CD variable temperature measurements.ConclusionsThe gene of the mir23b‐27b‐24‐1 cluster harbors three G‐quadruplexes with typical sequences and structures. Tetrandrine had a selective binding affinity to the parallel G‐quadruplex and stabilized it significantly. Copyright © 2015 John Wiley & Sons, Ltd.