bluuebunny/crossref_metadata_2025_split huggingface dataset:
Null‐spot control of magnetic field enabled by manipulating current distribution in metallic loop array
Authors: Banerjee Debasish , Tanaka Hiroya , Iizuka Hideo 
Published: September 2015

ABSTRACTLoading a capacitor into a metallic loop allows one to tune the resonance frequency of the induced current on the loop and enhance the current amplitude for the normally incident magnetic field. We show that in an array of variable‐capacitor‐loaded loops, a null spot of the magnetic field generated some distance away can be moved laterally and crossed the array by manipulating current amplitude of each loop via the variable capacitor. We develop an analytic model for expressing the curl of the current source on the loop by using the delta function so that the magnetic field behavior in the vicinity of the array is characterized together with physical insight. Moreover, the control of a null spot is explained by the decomposition of the curl of current sources. The concept of a null‐spot control is crucial for manipulating the kilohertz/megahertz magnetic field. © 2015 Wiley Periodicals, Inc. Microwave Opt Technol Lett 57:2891–2895, 2015
A planar equiangular spiral antenna with two annular rings
Authors: Sun Xu‐Bao , Cao Mao‐Yong , Jiang Lin 
Published: September 2015

ABSTRACTThis article presents a novel antenna with an improved impedance bandwidth and axial ratio bandwidth. This new design is comprised of an equiangular spiral and two annular rings on the same plane. These are printed on a Taconic substrate with a dielectric constant of 2.2 and a thickness of 1.52 mm. The proposed antenna has good performance compared with the conventional equiangular spiral antenna. The simulation results are validated through experimental measurements, and the overall size of the spiral antenna is visibly reduced. © 2015 Wiley Periodicals, Inc. Microwave Opt Technol Lett 57:2865–2867, 2015
Optical fiber temperature sensor based on modal interferometer comprising two peanut‐shape structures
Authors: Qian Ziheng , Gong Huaping , Yang Xiao , Ni Kai , Zhao Chun‐Liu , Dong Xinyong 
Published: September 2015

ABSTRACTAn all‐fiber temperature sensor based on two peanut‐shape structures modal interferometer is demonstrated. The results show that a high temperature sensitivity of 63.7 pm/°C is acquired for the 30 mm sensor, and the strain sensitivity is as low as −0.86 pm/με. The cross sensitivity is only 0.013°C/με, which is suitable for temperature sensing. © 2015 Wiley Periodicals, Inc. Microwave Opt Technol Lett 57:2841–2844, 2015
The design of broadband omnidirectional horizontally polarized dipole antennas with branch lines
Authors: Park Jae‐Sung , Choi Hak‐Keun 
Published: September 2015

ABSTRACTIn this article, a broadband omnidirectional horizontally polarized dipole antenna with branch lines is proposed. The proposed antenna consists of a dipole element with T‐shaped branch lines arranged in a circle in four directions on one microstrip substrate; power is supplied through an integrated balun. To check the broadband characteristics of this antenna, its radiation characteristics were examined while changing the width of the feed line, the distance between the dipole antenna and the branch line, the length of the branch line, and the distance between branch lines. As a result, the return loss in a structure with no branch line was −10 dB or less in the 16% band of 1.7–2 GHz, but in the structure with branch lines, it was −15 dB or less in the 38% band of the PCS/IMT/WLAN (1.7–2.5 GHz), which is broader by about 500 MHz than in a conventional antenna. The gain of the proposed antenna was atleast 1 dBi in the band used. The proposed antenna has a thin profile, as it consists of a single substrate. © 2015 Wiley Periodicals, Inc. Microwave Opt Technol Lett 57:2901–2905, 2015
Design of a tunable sequential power amplifier
Authors: Shao Jin , Ren Han , Zhou Mi , Arigong Bayaner , Ding Jun , Fu Song , Kim Hyoungsoo , Zhang Hualiang 
Published: September 2015

ABSTRACTA tunable sequential power amplifier (SPA) is presented in this article. The proposed SPA, including a tunable coupler, a carrier amplifier, a peaking amplifier, and a combining coupler is fabricated on Isola I‐TeraMTRF boards with 3.45 dielectric constant and 0.508 mm substrate thickness. A conventional SPA (nontunable) is also designed for reference and performance comparison. Measurement results show that the tunable SPA provides about 2 dB higher gain and 1 dB higher power output comparing with the reference design. The measurement results match well with the analysis. © 2015 Wiley Periodicals, Inc. Microwave Opt Technol Lett 57:2899–2901, 2015
Switchable single/dual band filtering UWB antenna using parasitic element and T‐shaped stub wave cancellers
Authors: Badamchi Z. , Zehforoosh Y. 
Published: September 2015

ABSTRACTA new design of microstrip slot antenna with switchable single and dual band filtering functions for ultrawideband (UWB) applications is presented in this letter. To create filtering quality, in the proposed structure radiating patch is modified embedding two T‐shaped stubs into the radiating patch and also using coupling parasitic element on the ground plane. The measured impedance bandwidth for VSWR <2 is spread in frequency range of 3–16.9 GHz with a fractional bandwidth of 139.7% while filtering the interference with C‐band and wireless local area network systems at 3.4–4.28 GHz and 5.21–6.36 GHz, respectively. Introducing PIN diodes switches to the antenna structure has added an additional merit to the antenna performance which is switchable single/dual band filtering operation. The designed antenna has a simple structure with a very small size of 20 × 20 mm2 while presenting consistent almost omnidirectional radiation characteristics at its vast frequency range of operation. © 2015 Wiley Periodicals, Inc. Microwave Opt Technol Lett 57:2946–2950, 2015
Compact triband bandpass filter with controllable bandwidths and high‐selectivity
Authors: Wang Liang , Zhu Zhao‐Jun , Lv Fei 
Published: September 2015

ABSTRACTA novel compact microstrip triband bandpass filter (BPF) with controllable bandwidths is proposed in this article. Two sets of short‐stub loaded dual‐mode resonators, which are designed for the second and third passband (1.8 GHz/3.5 GHz for GSM/WiMAX), respectively, and asymmetric λ/4 resonator pairs for the first passband (5.8 GHz for WLAN). The three passband frequencies and bandwidths could be independently controlled. To achieve high‐selectivity, a nonuniform coupled‐line with two U‐folded shapes on one line is then proposed to introduce an additional weak I/O cross coupling, thereby bringing one pair of transmission zeros at each side of all the triple passbands. Simulated and measured results are in good agreement indicating that the proposed BPF has respective fractional bandwidths of 6.0, 3.9, and 2.7% and a stopband region with 31 dB attenuation up to 9.7 GHz. © 2015 Wiley Periodicals, Inc. Microwave Opt Technol Lett 57:2906–2908, 2015
Microstrip antennas design based in periodic and quasiperiodic PBG symmetries
Authors: Pereira Jonathan P. P. , da Silva José P. , de Ádller , Guimarães O. 
Published: September 2015

ABSTRACTIn this article, the effect on radiation properties in a microstrip antenna through the use of different symmetries applied to structures based on photonic band gap is analyzed. The result obtained from computational simulation and measures of the constructed antennas shows a direct influence on the return loss. © 2015 Wiley Periodicals, Inc. Microwave Opt Technol Lett 57:2914–2917, 2015
Turning Spiroketals Inside Out: A Rearrangement Triggered by an Enol Ether Epoxidation
Authors: Lorenc Chris , Saurí Josep , Moser Arvin , Buevich Alexei V. , Williams Antony J. , Williamson R. Thomas , Martin Gary E. , Peczuh Mark W. 
Published: September 2015

AbstractInvited for this month's cover picture is the group of Professor Mark Peczuh at the University of Connecticut. The cover picture compares the rearrangement of a small molecule to the process of turning a stuffed animal inside out. The recycled, inside‐out stuffed animals are both artistic and philosophically provocative. They capture the essence of the rearrangement reaction because the compounds themselves turn inside out over the course of the reaction, extending the diversity of products that can arise from simple starting materials. Small molecules often have functional groups with latent reactivity; under the appropriate conditions, those groups can react with other compounds (e.g., reagents) and also with other groups in the same molecule in an intramolecular reaction. The research team found that the epoxidation of some highly functionalized spiroketal compounds promoted rearrangements of their structures that turned them inside out. Some of the features of the products led them to use X‐ray crystallography or a combination of computer‐assisted structure elucidation, computation, and a new version of the 1,1‐ADEQUATE NMR experiment to determine their structures. For more details, see the Communication on p. 577 ff.
Engineering large animal models of human disease
Authors: Whitelaw C Bruce A , Sheets Timothy P , Lillico Simon G , Telugu Bhanu P 
Published: September 2015

AbstractThe recent development of gene editing tools and methodology for use in livestock enables the production of new animal disease models. These tools facilitate site‐specific mutation of the genome, allowing animals carrying known human disease mutations to be produced. In this review, we describe the various gene editing tools and how they can be used for a range of large animal models of diseases. This genomic technology is in its infancy but the expectation is that through the use of gene editing tools we will see a dramatic increase in animal model resources available for both the study of human disease and the translation of this knowledge into the clinic. Comparative pathology will be central to the productive use of these animal models and the successful translation of new therapeutic strategies. © 2015 The Authors. The Journal of Pathology published by John Wiley & Sons Ltd on behalf of Pathological Society of Great Britain and Ireland.
Predicting the solution morphology of a sulfonated pentablock copolymer in binary solvent mixtures
Authors: Griffin Philip J. , Salmon Grace B. , Ford Jamie , Winey Karen I. 
Published: September 2015

ABSTRACTThe solution morphologies of a midblock‐sulfonated pentablock copolymer in miscible polar/nonpolar solvent blends were characterized as a function of solvent composition and polymer concentration using small angle X‐ray scattering. Three distinct solution morphologies are observed upon changing the composition of the solvent blend. At low weight fractions of polar solvent, spherical, sulfonated‐core micelles are observed, while spherical, sulfonated‐corona (inverted) micelles are observed at high weight fractions of polar solvent. Polymer solution scattering is observed at intermediate concentrations of polar solvent. Additionally, the characteristic dimensions of the sulfonated‐core micelles were found to change strongly upon variation of the solvent blend composition, indicating that these solutions—and correspondingly the morphology and properties of polymer membranes into which they are cast—can be tuned through simple variations in the solvent blend chemistry. We demonstrate that the solution morphologies and the characteristic micelle dimensions of these complex pentablock copolymer/binary solvent blends can be reliably predicted by considering the relative interactions of each polymer block and the solvent blend using the Hansen solubility parameters. © 2015 Wiley Periodicals, Inc. J. Polym. Sci., Part B: Polym. Phys. 2016, 54, 254–262
Effect of surface tension on the relaxation of a viscoelastic half‐space perturbed by a point load
Authors: Hui Chung‐Yuen , Jagota Anand 
Published: September 2015

ABSTRACTWe study the effect of surface tension on the flattening of a surface perturbed by a point load subsequent to its removal. The surface bounds an infinite isotropic linear viscoelastic incompressible half space. The point load is initially applied for a sufficiently long time so that the half space is fully relaxed before the load removal. An exact solution is obtained assuming small deformation. We then specialize our theory to the case of a standard viscoelastic solid. There is an initial reduction of the surface displacement immediately after load removal that is found to be directly proportional to the ratio of applied load to surface tension. This is followed by a temporal decay of the surface profile that depends only on the relaxation time and the long and short time moduli of the viscoelastic solid. Our work also provides the Green's function for a suddenly applied point load on the surface of a viscoelastic half space. © 2015 Wiley Periodicals, Inc. J. Polym. Sci., Part B: Polym. Phys. 2016, 54, 274–280
pKa predictions for proteins, RNAs, and DNAs with the Gaussian dielectric function using DelPhi pKa
Authors: Wang Lin , Li Lin , Alexov Emil 
Published: September 2015

ABSTRACTWe developed a Poisson‐Boltzmann based approach to calculate the
values of protein ionizable residues (Glu, Asp, His, Lys and Arg), nucleotides of RNA and single stranded DNA. Two novel features were utilized: the dielectric properties of the macromolecules and water phase were modeled via the smooth Gaussian‐based dielectric function in DelPhi and the corresponding electrostatic energies were calculated without defining the molecular surface. We tested the algorithm by calculating
values for more than 300 residues from 32 proteins from the PPD dataset and achieved an overall RMSD of 0.77. Particularly, the RMSD of 0.55 was achieved for surface residues, while the RMSD of 1.1 for buried residues. The approach was also found capable of capturing the large
shifts of various single point mutations in staphylococcal nuclease (SNase) from
‐cooperative dataset, resulting in an overall RMSD of 1.6 for this set of pKa's. Investigations showed that predictions for most of buried mutant residues of SNase could be improved by using higher dielectric constant values. Furthermore, an option to generate different hydrogen positions also improves
predictions for buried carboxyl residues. Finally, the
calculations on two RNAs demonstrated the capability of this approach for other types of biomolecules. Proteins 2015; 83:2186–2197. © 2015 Wiley Periodicals, Inc.
Amino acid alphabet reduction preserves fold information contained in contact interactions in proteins
Authors: Solis Armando D. 
Published: September 2015

ABSTRACTTo reduce complexity, understand generalized rules of protein folding, and facilitate de novo protein design, the 20‐letter amino acid alphabet is commonly reduced to a smaller alphabet by clustering amino acids based on some measure of similarity. In this work, we seek the optimal alphabet that preserves as much of the structural information found in long‐range (contact) interactions among amino acids in natively‐folded proteins. We employ the Information Maximization Device, based on information theory, to partition the amino acids into well‐defined clusters. Numbering from 2 to 19 groups, these optimal clusters of amino acids, while generated automatically, embody well‐known properties of amino acids such as hydrophobicity/polarity, charge, size, and aromaticity, and are demonstrated to maintain the discriminative power of long‐range interactions with minimal loss of mutual information. Our measurements suggest that reduced alphabets (of less than 10) are able to capture virtually all of the information residing in native contacts and may be sufficient for fold recognition, as demonstrated by extensive threading tests. In an expansive survey of the literature, we observe that alphabets derived from various approaches—including those derived from physicochemical intuition, local structure considerations, and sequence alignments of remote homologs—fare consistently well in preserving contact interaction information, highlighting a convergence in the various factors thought to be relevant to the folding code. Moreover, we find that alphabets commonly used in experimental protein design are nearly optimal and are largely coherent with observations that have arisen in this work. Proteins 2015; 83:2198–2216. © 2015 Wiley Periodicals, Inc.
Optical properties and lattice dynamics of CuZnGeSe quaternary semiconductor: A density‐functional study
Authors: Litvinchuk Alexander P. 
Published: September 2015

AbstractDensity‐functional calculations of the electronic band structure, optical properties, and lattice dynamics of kesterite CuZnGeSe semiconductor (space group ) are reported. Theoretical optical properties of the material are shown to agree quantitatively with available spectroscopic ellipsometry experimental data that allow detailed interpretation of the main spectral features around the fundamental absorption edge. A good agreement between theoretical and experimental vibrational mode frequencies is also established and the assignment of observed phonon modes to specific lattice eigenmodes is performed.
Identification of bacteria by fatty acid profiling with direct analysis in real time mass spectrometry
Authors: Cody Robert B. , McAlpin Casey R. , Cox Christopher R. , Jensen Kirk R. , Voorhees Kent J. 
Published: September 2015

RationaleBacterial fatty acid profiling is a well‐established technique for bacterial identification. Current methods involving esterification and gas chromatography/mass spectrometry (GC/MS) or matrix‐assisted laser desorption/ionization (MALDI) analysis are effective, but there are potential benefits to be gained by investigating ambient ionization methods that can provide rapid analysis without derivatization or additional sample handling.MethodsLipid extracts from colonies of five Gram‐positive and five Gram‐negative pathogenic bacteria were analyzed by Direct Analysis in Real Time (DART) ionization coupled with a time‐of‐flight mass spectrometer. Fatty acid profiles were obtained from the negative‐ion DART mass spectra without additional derivatization or sample preparation.ResultsFatty acid profiles obtained from the deprotonated molecules [M – H]− were found to be highly species‐specific and reproducible. Leave‐one‐out cross validation (LOOCV) for principal component analysis (PCA) showed 100% correct classification accuracy.ConclusionsThe results of this preliminary feasibility study show good precision and accuracy, and the fatty acid patterns are clearly distinctive for each of the ten species examined. The speed and ease of analysis and the high classification accuracy for this initial study indicate that DART is an effective method for bacterial fatty acid profiling. Copyright © 2015 John Wiley & Sons, Ltd.
Atopic Dermatitis and Respiratory Allergy: What is the Link
Authors: Belgrave Danielle C. M. , Simpson Angela , Buchan Iain E. , Custovic Adnan 
Published: September 2015

Abstract
Understanding the aetiology and progression of atopic dermatitis and respiratory allergy may elucidate early preventative and management strategies aimed towards reducing the global burden of asthma and allergic disease. In this article, we review the current opinion concerning the link between atopic dermatitis and the subsequent progression of respiratory allergies during childhood and into early adolescence. Advances in machine learning and statistical methodology have facilitated the discovery of more refined definitions of phenotypes for identifying biomarkers. Understanding the role of atopic dermatitis in the development of respiratory allergy may ultimately allow us to determine more effective treatment strategies, thus reducing the patient and economic burden associated with these conditions.
Retrospective comparison of laparoscopic versus open radical hysterectomy after neoadjuvant chemotherapy for locally advanced cervical cancer
Authors: Cai Jing , Yang Lu , Dong Weihong , Wang Hongbo , Xiong Zhoufang , Wang Zehua 
Published: September 2015

AbstractObjectiveTo compare outcomes after laparoscopic radical hysterectomy (LRH) and abdominal radical hysterectomy (ARH) for locally advanced cervical cancer (LACC)after neoadjuvant chemotherapy (NACT).MethodsIn a retrospective study, data were analyzed from patients with FIGO stage IB2–IIB cervical cancer who underwent LRH or ARH after NACT at Union Hospital, Wuhan, China, between January 2007 and August 2013. Perioperative outcomes and survival were compared.ResultsOverall, 99 patients who underwent LRH and 30 who underwent ARH were included. Compared with ARH patients, LRH patients presented with lower‐stage tumors (P = 0.013). Median operative time, number of harvested lymph nodes, and rate of positive surgical margins did not differ significantly between the groups, but LRH resulted in less blood loss (median 300 mL [range 20–1100] vs 375 mL [100–1200]; P = 0.027). There were two intraoperative complications and 23 postoperative complications in the LRH group, and 12 postoperative complications in the ARH group. No conversions occurred in the LRH group; all complications were managed without severe sequelae. As of March 2014, recurrence had been noted for 6(6.1%) LRH patients and 2 (6.7%) ARH patients.ConclusionLRH was similar to ARH in terms of safety, feasibility, and morbidity, with less blood loss among women with LACC undergoing NACT. Long‐term outcomes need to be documented.
Organization and evaluation of a pilot cervical cancer screening program in Morocco
Authors: Selmouni Farida , Sauvaget Catherine , Belakhel Latifa , Lucas Eric , Khouchoua Mohamed , Sankaranarayanan Rengaswamy 
Published: September 2015

AbstractObjectiveTo evaluate a pilot program for early detection of cervical cancer using visual inspection with acetic acid (VIA) and the loop electrosurgical excision procedure (LEEP) in one region of Morocco.MethodsA descriptive analysis of the screening outcome measures of 43 participating primary care units and one reference center for LEEP was conducted in Meknès‐Tafilalet between January 1, 2011, and December 31, 2013. Data on the number of participants, VIA results, colposcopy, and treatment were used in analyses.ResultsOf the 308 197 women in the target age group (30–49 years), 18 586 (6.0%) were screened by VIA. Positive screening test results were recorded for 1628 (8.8%) women, of whom 1144 (70.3%) received diagnostic confirmation by colposcopy. Of the 87 (7.6%) women with cervical intraepithelial neoplasia, only 16 (18.4%) underwent LEEP; three cases of invasive cervical cancer were diagnosed.ConclusionIssues with implementation of the screening program were found, including low compliance and a low treatment rate of cervical intraepithelial neoplasia by LEEP. By contrast, high rates of colposcopy referral were observed. Screen‐and‐treat by ablative methods (e.g. thermocoagulation) should be considered to increase treatment rates at national scale‐up.