bluuebunny/crossref_metadata_2025_split huggingface dataset:
Composite microstrip lowpass filter with ultrawide stopband and low insertion loss
Authors: Shaman Hussein , Almorqi Sultan , AlAmoudi Ahmed 
Published: February 2015

ABSTRACTA compact microstrip lowpass filter with a very wide passband is proposed in this article. The filter is based on generalized Chebyshev filter prototype of nine degree. The filter is designed to have a cut‐off frequency at 18 GHz and a return loss of better than 20 dB. The design of the proposed filter is successfully realized in theory and verified by full‐wave electromagnetic simulation and the experiment. An excellent agreement between the expected and measured results is obtained. The measured results show a low insertion loss of less than 1.5 dB over the entire ultrawide passband. The fabricated filter looks attractive for wideband RF/microwave systems due to its good performance and overall physical volume. © 2015 Wiley Periodicals, Inc. Microwave Opt Technol Lett 57:871–874, 2015
Extraction of on‐body creeping wave mechanisms using the ESPRIT algorithm
Authors: Xue Dong , Garner Brian A. , Li Yang 
Published: February 2015

ABSTRACTThe propagation of creeping waves on the human body is investigated. Both propagation constants and decay constants are extracted from measurements using the ESPRIT algorithm. The results are compared to on‐body creeping wave theory. © 2015 Wiley Periodicals, Inc. Microwave Opt Technol Lett 57:868–871, 2015
GaN HEMT noise modeling based on 50‐Ω noise factor
Authors: Crupi Giovanni , Caddemi Alina , Raffo Antonio , Salvo Giuseppe , Nalli Andrea , Vannini Giorgio 
Published: February 2015

ABSTRACTThe extraction of a high‐frequency ivalent circuit model plays a fundamental role for the development of any emerging transistor technology. Indeed, an equivalent circuit can provide a valuable support for microwave engineers to ensure a fast and reliable optimization of both device fabrication and circuit design. As far as gallium nitride (GaN) HEMTs are concerned, research efforts have been mostly focused on determining equivalent circuits able to reproduce their large‐signal behavior. Nevertheless, an increasing amount of interest is also being devoted to noise equivalent circuits, due to the interesting GaN technology noise performance. Within this context, the purpose of the present paper is to extract and fully validate an accurate noise model for GaN HEMTs based on a simple, fast, and reliable extraction procedure. The noise model is obtained by assigning an equivalent noise temperature to each resistor of the small‐signal equivalent circuit. The accuracy of the extracted noise model is confirmed by the good agreement between measured and simulated high‐frequency noise parameters. © 2015 Wiley Periodicals, Inc. Microwave Opt Technol Lett 57:937–942, 2015
Envelope‐tracking EM‐CKT simulation of nonlinearly loaded wire antennas under broadband excitations
Authors: Subramanian Vivek , Yılmaz Ali E. 
Published: February 2015

ABSTRACTNovel temporal sampling and interpolation schemes are presented to improve the performance of envelope‐tracking hybrid electromagnetic‐circuit simulators that express voltages, currents, and fields of interest as series of harmonic sinusoids weighted by complex time‐varying coefficients (envelopes). These schemes enable broader band simulations to be performed by expanding the range of validity of expressions that relate the envelopes of currents through nonlinear circuit elements to the envelopes of the voltages across them. Diode loaded wire antennas and antenna arrays are analyzed under broadband excitations to demonstrate the viability of the proposed schemes. © 2015 Wiley Periodicals, Inc. Microwave Opt Technol Lett 57:912–918, 2015
Continuously tunable band‐notched ultrawideband antenna
Authors: Malik Jagannath , Velalam Paritosh K. , Kartikeyan Machavaram V. 
Published: February 2015

ABSTRACTA compact coplanar wave guide ‐fed elliptically tapered ultrawideband (UWB) antenna with a tunable narrow rejection band of 0.195 GHz with tunable range (5.07–5.83) GHz is presented. The proposed antenna consists of elliptically tapered patch, elliptically tapered and truncated ground plane to achieve the UWB bandwidth. A quarter wavelength stubs loaded with a varactor diode has been used to tune the notched band. The proposed antenna has been fabricated on low cost FR4 substrate with dimensions as (24 × 30 × 1.524) mm3. Both the frequency domain as well the time domain performance characterization have been carried out and discussed. © 2015 Wiley Periodicals, Inc. Microwave Opt Technol Lett 57:924–928, 2015
Measurement of refraction index of thick and nontransparent isotropic material using transmission microwave ellipsometry
Authors: Moungache A. , Bayard B. , Tahir Abakar Mahamat , Robert S. , Jamon D. , Gambou F. 
Published: February 2015

ABSTRACTThis article introduces an original microwave ellipsometry method for the characterization of dielectric materials. It is a nondestructive technique based on the interaction between wave and material in the 26–40 GHz frequency range. The refraction index is obtained by measuring the rotation angle of the refracted wave polarization for different angular positions of the sample. The technique is then validated with polytetrafluoroethylene samples which refraction index is known. © 2015 Wiley Periodicals, Inc. Microwave Opt Technol Lett 57:1006–1013, 2015
A 3D domain decomposition approach for the identification of spatially varying elastic material parameters
Authors: Moussawi Ali , Lubineau Gilles , Xu Jiangping , Pan Bing 
Published: February 2015

SummaryThe post‐treatment of (3D) displacement fields for the identification of spatially varying elastic material parameters is a large inverse problem that remains out of reach for massive 3D structures. We explore here the potential of the constitutive compatibility method for tackling such an inverse problem, provided an appropriate domain decomposition technique is introduced. In the method described here, the statically admissible stress field that can be related through the known constitutive symmetry to the kinematic observations is sought through minimization of an objective function, which measures the violation of constitutive compatibility. After this stress reconstruction, the local material parameters are identified with the given kinematic observations using the constitutive equation. Here, we first adapt this method to solve 3D identification problems and then implement it within a domain decomposition framework which allows for reduced computational load when handling larger problems. Copyright © 2015 John Wiley & Sons, Ltd.
Highly conductive ZnO films with high near infrared transparency
Authors: Hála Matěj , Fujii Shohei , Redinger Alex , Inoue Yukari , Rey Germain , Thevenin Maxime , Deprédurand Valérie , Weiss Thomas Paul , Bertram Tobias , Siebentritt Susanne 
Published: February 2015

AbstractWe present an approach for deposition of highly conductive nominally undoped ZnO films that are suitable for the n‐type window of low band gap solar cells. We demonstrate that low‐voltage radio frequency (RF) biasing of growing ZnO films during their deposition by non‐reactive sputtering makes them as conductive as when doped by aluminium (ρ≤1·10−3Ω cm). The films prepared with additional RF biasing possess lower free‐carrier concentration and higher free‐carrier mobility than Al‐doped ZnO (AZO) films of the same resistivity, which results in a substantially higher transparency in the near infrared region (NIR). Furthermore, these films exhibit good ambient stability and lower high‐temperature stability than the AZO films of the same thickness. We also present the characteristics of Cu(InGa)Se2, CuInSe2 and Cu2ZnSnSe4‐based solar cells prepared with the transparent window bilayer formed of the isolating and conductive ZnO films and compare them to their counterparts with a standard ZnO/AZO bilayer. We show that the solar cells with nominally undoped ZnO as their transparent conductive oxide layer exhibit an improved quantum efficiency for λ > 900 nm, which leads to a higher short circuit current density JSC. This aspect is specifically beneficial in preparation of the Cu2ZnSnSe4 solar cells with band gap down to 0.85 eV; our champion device reached a JSC of nearly 39 mAcm−2, an open circuit voltage of 378mV, and a power conversion efficiency of 8.4 %. Copyright © 2015 John Wiley & Sons, Ltd.
Men's experience with penile rehabilitation following radical prostatectomy: a qualitative study with the goal of informing a therapeutic intervention
Authors: Nelson Christian J. , Lacey Stephanie , Kenowitz Joslyn , Pessin Hayley , Shuk Elyse , Roth Andrew J. , Mulhall John P. 
Published: February 2015

AbstractBackgroundErectile rehabilitation (ER) following radical prostatectomy (RP) is considered an essential component to help men regain erectile functioning; however, many men have difficulty adhering to this type of program. This qualitative study explored men's experience with ER, erectile dysfunction (ED), and ED treatments to inform a psychological intervention designed to help men adhere to ER post‐RP.MethodsThirty men, 1‐to‐3‐years post‐RP, who took part in an ER program, participated in one of four focus groups. Thematic analysis was used to identify the primary themes.ResultsAverage age was 59 years (standard deviation = 7); mean time since surgery was 26 months (standard deviation = 6). Six primary themes emerged: (1) frustration with the lack of information about postsurgery ED; (2) negative emotional impact of ED and avoidance of sexual situations; (3) negative emotional experience with penile injections and barriers leading to avoidance; (4) the benefit of focusing on the long‐term advantage of ER versus short‐term anxiety; (5) using humor to help cope; and (6) the benefit of support from partners and peers.ConclusionsMen's frustration surrounding ED can lead to avoidance of sexual situations and ED treatments, which negatively impact men's adherence to an ER program. The theoretical construct of acceptance and commitment therapy was used to place the themes into a framework to conceptualize the mechanisms underlying both avoidance and adherence in this population. As such, acceptance and commitment therapy has the potential to serve as a conceptual underpinning of a psychological intervention to help men reduce avoidance to penile injections and adhere to an ER program. Copyright © 2015 John Wiley & Sons, Ltd.
A proteomic study of the regulatory role for STAT‐1 in cytokine‐induced beta‐cell death
Authors: Rondas Dieter , Gudmundsdottir Valborg , D'Hertog Wannes , Crèvecoeur Inne , Waelkens Etienne , Brunak Soren , Mathieu Chantal , Overbergh Lut 
Published: February 2015

PurposeSignal transducer and activator of transcription 1 (STAT‐1) plays a crucial role in cytokine‐induced beta‐cell destruction. However, its precise downstream pathways have not been completely clarified. We performed a proteome analysis of cytokine‐exposed C57Bl/6 and STAT‐1−/− mouse islets and prioritized proteins for their potential in relation to type 1 diabetes (T1D).Experimental designDifferential proteins were identified using a combination of 2D‐DIGE and MALDI‐TOF/TOF analysis and were subjected to ingenuity pathway analysis (IPA). Protein–protein interaction networks were created and a phenome‐interactome ranking of the differential proteins based on their assignment to T1D was performed.ResultsNumerous STAT‐1‐regulated proteins were identified and divided in different groups according to their biological function. The largest group of proteins was the one involved in protein synthesis and processing. Network analysis revealed a complex interaction between proteins from different functional groups and IPA analysis confirmed the protective effect of STAT‐1 deletion on cytokine‐induced beta‐cell death. Finally, a central role in this STAT‐1‐regulated mechanism was assigned to small ubiquitin‐related modifier 4 (SUMO4).Conclusions and clinical relevanceThese findings confirm a central role for STAT‐1 in pancreatic islet inflammation induced destruction and most importantly elucidate the underlying proteomic pathways involved.
Discovery of novel candidate urinary protein biomarkers for prostate cancer in a multiethnic cohort of South African patients via label‐free mass spectrometry
Authors: Adeola Henry A. , Soares Nelson C. , Paccez Juliano D. , Kaestner Lisa , Blackburn Jonathan M. , Zerbini Luiz F. 
Published: February 2015

PurposeImprovement in diagnostic accuracy of prostate cancer (PCa) progression using MS‐based methods to analyze biomarkers in our African, Caucasian, and Mixed Ancestry patients can advance early detection and treatment monitoring.Experimental designMS‐based proteomic analysis of pooled (N = 36) and individual samples (N = 45) of PCa, benign prostatic hyperplasia, normal healthy controls, and patients with other uropathies was used to identify differences in proteomics profile. Samples were analyzed for potential biomarkers and proteome coverage in African, Caucasian, and Mixed Ancestry PCa patients.ResultsA total of 1102 and 5595 protein groups and nonredundant peptides, respectively, were identified in the pooling experiments (FDR = 0.01). Twenty potential biomarkers in PCa were identified and fold differences ± 2SD were observed in 17 proteins using intensity‐based absolute quantification. Analysis of 45 individual samples yielded 1545 and 9991 protein groups and nonredundant peptides, respectively. Seventy‐three (73) proteins groups, including existing putative PCa biomarkers, were found to be potential biomarkers of PCa by label‐free quantification and demonstrated ethnic trends within our PCa cohort.Conclusion and clinical relevanceUrinary proteomics is a promising route to PCa biomarker discovery and may serve as source of ethnic‐related biomarkers of PCa.
Integrated design of residual generation and evaluation for fault detection of networked control systems
Authors: Wan Yiming , Wang Wei , Ye Hao 
Published: February 2015

SummaryIn this paper, integrated design of residual generation and evaluation is proposed to fault detection (FD) of networked control systems. Both the imperfect network transmissions and the sampling effects are considered under the assumption that no stochastic network model is available. By deriving a linear discrete time‐varying system equivalent to the sampled plant, the continuous‐time behaviors of disturbances and faults during sampling intervals are captured. Moreover, the effects of unknown but bounded packet delays and dropouts in the controller‐to‐actuator link are described by uncertain input delays with finite number of possibilities. A parity relation‐based FD module with multiple residuals is constructed for the derived system model. For the constructed FD module, the set of undetectable faults is obtained from integrated analysis of residual generation and evaluation and then designed to achieve its worst‐case minimal geometrical size while guaranteeing zero false alarms. Simulation results on a networked three‐tank system are provided to show the merits of the proposed integrated design approach. Copyright © 2015 John Wiley & Sons, Ltd.
Concise Review: Reactive Astrocytes and Stem Cells in Spinal Cord Injury: Good Guys or Bad Guys?
Authors: Lukovic Dunja , Stojkovic Miodrag , Moreno-Manzano Victoria , Jendelova Pavla , Sykova Eva , Bhattacharya Shomi S. , Erceg Slaven 
Published: February 2015

Abstract
Spinal cord injury (SCI) usually results in long lasting locomotor and sensory neuron degeneration below the injury. Astrocytes normally play a decisive role in mechanical and metabolic support of neurons, but in the spinal cord they cause injury, exerting well-known detrimental effects that contribute to glial scar formation and inhibition of axon outgrowth. Cell transplantation is considered a promising approach for replacing damaged cells and promoting neuroprotective and neuroregenerative repair, but the effects of the grafted cells on local tissue and the regenerative properties of endogenous neural stem cells in the injured spinal cord are largely unknown. During the last 2 decades cumulative evidence from diverse animal models has indicated that reactive astrocytes in synergy with transplanted cells could be beneficial for injury in multiple ways, including neuroprotection and axonal growth. In this review, we specifically focus on the dual opposing roles of reactive astrocytes in SCI and how they contribute to the creation of a permissive environment when combined with transplanted cells as the influential components for a local regenerative niche. Modulation of reactive astrocyte function might represent an extremely attractive new therapy to enhance the functional outcomes in patients. Stem Cells 2015;33:1036–1041
Herbal plant‐derived compound, 1,2,3,4,6‐penta‐O‐galloyl‐β‐d‐glucose, increases cross‐presentation by dendritic cells
Authors: Inujima Akiko , Yamada Miyuki , Takeno Nobuhiro , Hoshina Akiko , Oe Mikihiro , Shinohara Kanna , Shibahara Naotoshi , Sakurai Hiroaki , Saiki Ikuo , Koizumi Keiichi 
Published: February 2015

ABSTRACTAimVaccines have made great contributions to human welfare, and can be used even more effectively with adjuvants. The immune‐inducible effects of adjuvants are classified into four categories: T‐helper (Th)1, Th2, antibody, and cytotoxic T‐lymphocyte (CTL) responses. Exogenous antigens are mainly presented to major histocompatibility complex (MHC) class II molecules, but are also presented to MHC class I molecules via the antigen cross‐presentation process in dendritic cells. The enhancement of cross‐presentation of an injected vaccine antigen by an adjuvant leads to Th1 and CTL responses, resulting in successful intracellular infection and tumor vaccine therapy.MethodsIt is widely known that herbal medicines have strong immune response effects. With this in mind, we developed a novel vaccine adjuvant from natural compounds used in herbal medicine, through an in vitro model vaccine antigen (ovalbumin, OVA) cross‐presentation assay.ResultsAmong 89 natural compounds, 1,2,3,4,6‐penta‐O‐galloyl‐β‐d‐glucose (PGG) most enhanced cross‐presentation in dendritic cells. While the expression of MHC class II molecules was suppressed, PGG enhanced the expression of MHC class I molecules, restricted to OVA‐derived peptides.ConclusionRestricted MHC class I expression resulting from the use of PGG enhanced cross‐presentation by dendritic cells.
Enhanced d-arabitol production by Zygosaccharomyces rouxii JM-C46: isolation of strains and process of repeated-batch fermentation
Authors: Qi Xianghui , Luo Yan , Wang Xu , Zhu Jingfei , Lin Jing , Zhang Huanhuan , Chen Fang , Sun Wenjing 
Published: February 2015

Abstract
A new strain producing high yield of d-arabitol was isolated from hyperosmotic environments and the ITS rDNA sequencing analysis revealed it as Zygosaccharomyces rouxii. In addition, using a pH control and repeated-batch fermentation strategy in a 5-L reactor, the maximum yield and the highest volumetric productivity of d-arabitol were 93.48 ± 2.79 g/L and 1.143 g/L h, respectively. Volumetric productivity was successfully improved from 0.86 to 1.143 g/L h, which was increased by 32.9 % after 72 h of fermentation. Z. rouxii JM-C46 has potential to be used for d-arabitol and xylitol production from glucose via d-arabitol route.
Dishonesty under scrutiny
Authors: van de Ven Jeroen , Villeval Marie Claire 
Published: February 2015

AbstractWe investigate how different forms of scrutiny affect dishonesty, using Gneezy’s [Am Econ Rev 95:384–394 (2005)] deception game. We add a third player whose interests are aligned with those of the sender. We find that lying behavior is not sensitive to revealing the sender’s identity to the observer. The option for observers to communicate with the sender, and the option to reveal the sender’s lies to the receiver also do not affect lying behavior. Even more striking, senders whose identity is revealed to their observer do not lie less when their interests are misaligned with those of the observer.
Barrett's esophagus and risk of esophageal adenocarcinoma: A retrospective analysis
Authors: Wang Hung‐Wei , Kuo Chia‐Jung , Lin Wey‐Ran , Hsu Chen‐Ming , Ho Yu‐Pin , Lin Chun‐Jung , Chen Kuang‐Hua , Su Ming‐Yao , Chiu Cheng‐Tang 
Published: February 2015

SummaryBackground and aimBarrett's esophagus (BE) is the most common cause or precursor of esophageal adenocarcinoma (EAC), a condition with a poor prognosis. This study aimed to investigate the clinical characteristics and risk of EAC in patients with BE.Materials and methodsFrom January 2001 to December 2012, a total of 425 patients with histologically proven BE were identified and analyzed retrospectively. Patients' personal data (smoking, alcohol consumption), underlying systemic disease data (diabetes mellitus and hypertension), endoscopic findings (hiatal hernia, peptic ulcer, endoscopically suspected esophageal metaplasia, severity of reflux esophagitis, rapid urease test), and pathological findings (degree of dysplasia, Helicobacter pylori infection) were collected for further analysis.ResultsIn this retrospective study, 15 patients were diagnosed with EAC. Only one patient was found to have EAC during endoscopic surveillance for BE. The majority of patients (14/15 patients) suffered alarm symptoms and were diagnosed to have BE and EAC concurrently. Meanwhile, EAC is already relatively at an advanced stage. The mean age for diagnosis of EAC in a patient with BE was 67.67 ± 9.92 years old. All patients were male. From a total of 15 patients, 33.3% (5 patients) demonstrated erosive esophagitis under endoscopy and 60% (3 of 5 patients) of these were classified as Los Angeles grade C or D disease.ConclusionOur study found that BE‐associated EAC mostly occurred in older men. In the group with BE‐associated EAC, the majority of patients were discovered due to alarm symptoms, at the same time as esophageal adenocarcinoma had already developed. Further prospective study is needed to stratify the risk of disease progression in BE patients.
Medical utilization by liver cancer patients under the National Health Insurance program in Taiwan: A population‐based cross‐sectional study
Authors: Yeh Chun , Lin Yi‐Hsien , Yu Cheng‐Ping , Hsu Chung‐Te 
Published: February 2015

SummaryAimsTaiwan implemented a comprehensive and universal National Health Insurance (NHI) program to cover all inhabitants. This study aimed to assess the medical utilization by liver cancer patients under the NHI.MethodsThis retrospective cross‐sectional study used a sampled NHI research database, which contained 1 million beneficiaries. The claims of liver cancer patients in 2009 were analyzed. The other beneficiaries without liver cancer who used medical services in 2009 served as the control patients.ResultsAmong the 2335 identified liver cancer patients, 2178 (93.3%) patients used outpatient services and 1193 (51.1%) patients used inpatient services. Liver cancer accounted for 1.8% of the NHI's total cost. The cost per visit was United States dollars (US$)59.30 for outpatient care and US$2070.30 for inpatient care. The annual cost per patient was US$4746.60; US$1951.00 were for outpatient care and US$2795.60 for inpatient care. Patients who were female, in their 60s, had a lower income, and lived in southern Taiwan had a higher cost per patient (p < 0.0001). Fees for consultation, treatment, and medical supplies (57.3%) accounted for the highest portion of outpatient costs, followed by drug fees (30.0%) and diagnosis fees (11.2%). Ward fees accounted for the highest portion of inpatient costs (19.0%), followed by drug fees (18.7%) and X‐ray fees (14.9%). Private hospitals were visited more frequently than public hospitals. The cost per visit and cost per patient with liver cancer were 206.0% and 666.8%, respectively, of the cost of the control patients.ConclusionThe cost of liver cancer care is substantial and varies by sex, age, income, and geographic distribution. It is critical to reduce the incidence of liver cancer and identify cost‐effective treatment strategies.