bluuebunny/crossref_metadata_2025_split huggingface dataset:
Is DSM‐IV criterion A2 associated with PTSD diagnosis and symptom severity?
Authors: Osei‐Bonsu Princess E. , Spiro Avron , Schultz Mark R. , Ryabchenko Karen A. , Smith Eric , Herz Lawrence , Eisen Susan V. 
Published: July 2012

AbstractThe diagnostic criteria for posttraumatic stress disorder (PTSD) have received significant scrutiny. Several studies have investigated the utility of Criterion A2, the subjective emotional response to a traumatic event. The American Psychiatric Association (APA) has proposed elimination of A2 from the PTSD diagnostic criteria for DSM‐5; however, there is mixed support for this recommendation and few studies have examined A2 in samples at high risk for PTSD such as veterans. In the current study of 908 veterans who screened positive for a traumatic event, A2 was not significantly associated with having been told by a doctor that the veteran had PTSD. Those who endorsed A2, however, reported greater PTSD symptom severity in the 3 DSM‐IV symptom clusters of reexperiencing (d = 0.45), avoidance (d = 0.61), and hyperarousal (d = 0.44), and A2 was significantly associated with PTSD symptom severity for all 3 clusters (R2 = .25, .25, and .27, respectively) even with trauma exposure in the model. Thus, although A2 may not be a necessary criterion for PTSD diagnosis, its association with PTSD symptom severity warrants further exploration of its utility.
Preparation of AB2 Monomers and the Corresponding Hyperbranched Polyureas in a One‐Pot Procedure
Authors: Xiang Fei , Loontjens Ton , Geladé Erik , Vorenkamp Joop 
Published: July 2012

AbstractNovel AB2 monomers and corresponding hyperbranched polyureas are prepared in a one‐pot process. AB2 monomers are synthesized by a highly selective reaction of carbonyl biscaprolactam (CBC) with triamines comprising one secondary and two primary amino groups. Only the primary amines react with CBC, yielding blocked isocyanates. On heating, self‐condensation of the obtained monomer solution takes place, yielding polymers with Mn up to 11 000 Da. Mark‐Houwink exponents of 0.3 and branching frequencies of 0.3 demonstrate the hyperbranched topology. Each polymer molecule comprises one secondary amino group in the focal point and numerous active blocked isocyanates located at the end of the polymer branches. The polymers are fully characterized by means of 1H NMR, 13C NMR, MALDI‐TOF, SEC, and DSC.
One‐Step Electrodeposition to Layer‐by‐Layer Graphene–Conducting‐Polymer Hybrid Films
Authors: Tang Yanhong , Wu Na , Luo Shenglian , Liu Chengbin , Wang Ke , Chen Liuyun 
Published: July 2012

AbstractOne‐step fabrication of graphene–polyaniline (graphene–PANI) hybrid film was facilely achieved by cyclic voltammetric electrolysis of a bath containing both graphene oxide (GO) and aniline, where graphene is obtained by electrochemical reduction of GO and PANI is simultaneously obtained by aniline electropolymerization. As there is no strong attraction between aniline and GO under the electrodeposition conditions, the independent depositions of PANI and reduced GO nanosheets at their greatly differed potentials led to alternate layered graphene–PANI films, with the topmost layer being PANI particles or graphene sheets just by changing the initial scan directions. The two kinds of graphene–PANI hybrid films present excellent but different electrical and electrochemical behaviors.
Reconstruction of lower extremity complex wounds with combined free tissue transfer using the anterolateral thigh flap as a link
Authors: Kim Tae‐Gon , Kim Il‐Kug , Kim Yong‐Ha , Lee Jun‐Ho 
Published: July 2012

AbstractIn this report, the authors present the experience on the reconstruction of the totally degloved foot and extremely long soft tissue defect of a lower limb with the combined free tissue transfer using the anterolateral thigh flap as a link in two male patients between October 2009 and December 2010. The anterolateral thigh flap has been commonly used as a link between the recipient site and the distal flap. The anterolateral thigh flap and latissimus dorsi muscle flap were selected for the distal flap, according to their reconstructive needs. Two combined free flaps survived without major complication. The authors could salvage of the lower extremity through the reconstruction of complex wound with the combined free tissue transfer using the anterolateral thigh flap as a link. This combined flap may be an alternative for reconstruction of complex soft tissue defect in the lower extremity. © 2012 Wiley Periodicals, Inc. Microsurgery, 2012.
Auricle reconstruction with a radial forearm flap prelaminated with porous polyethylene (Medpor®) implant
Authors: Simsek Tekin , Eroglu Lutfi 
Published: July 2012

AbstractSevere auricular traumas with extensive involvement of the surrounding structures present with a serious defect necessitating free tissue transfers for reconstruction. In this case report, we present a case of whole left auricle reconstruction with a radial forearm flap prelaminated with porous polyethylene (Medpor®) implant in a 17‐year‐old female patient. First, a subdermal pouch was fashioned on the volar aspect of the left forearm along the projection of the radial artery and the Medpor implant was placed in this pouch. Four weeks later, the prelaminated radial forearm flap containing the Medpor implant was transferred to the recipient site. Resultant construct had a pliable skin cover, and the patient was pleased with the esthetic outcome even though revisions such as external auditory meatus widening, conchal cup deepening, and lobule defining were planned as further interventions. We believe that this method is a pertinent reconstructive option for extensive defects of the auricular region. © 2012 Wiley Periodicals, Inc. Microsurgery, 2012.
Application of singularity expansion method for monitoring the deployment of arterial stents
Authors: Manteghi Majid , Cooper Daniel B. , Vlachos Pavlos P. 
Published: July 2012

AbstractA stent is a metal tube used to treat blocked blood vessels in the body. The stent is deployed into obstructed part of the blood vessel to keep it open and improve the blood flow in the diseased area. During the stent implantation, the collapsed stent is expanded into the artery to a size so as to stick to the artery walls. Because of the significant health dangers caused by the over‐expansion or under‐expansion of the stent, having a proper estimation of diameter of the stent in the artery during expansion is important. However, yet to date, no method exists that would allow real time monitoring during and after the stent expansion process. In this article, we present a novel methodology to estimate diameter of the stent during and after deployment in the artery by applying the singularity expansion method (SEM). According to SEM, the transient electromagnetic signal scattered from bodies can be described by poles and residues. Poles are intrinsic property of the body that can be used to detect deformation of an object such as expansion. We have demonstrated the idea of estimating diameter of a stent via tracking poles by both simulation and measurement. © 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:2241–2246, 2012; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.27053
Gigabyte and terabyte per second connections with semiconductor waveguide technology
Authors: Magri Vanessa P. R. , Lima Rodolfo A. A. , Mosso Marbey M. 
Published: July 2012

AbstractThis work presents the research, design, and development of guided‐wave connections in SiGe semiconductor substrates.The integration of digital systems using semiconductor integrated waveguides (S‐SIWG) with QAM modulation formats are highlighted for ultrafast inter‐chip and intra‐chip connections at 100 Gbit/s extended to the Terahertz domain. The simulations of the frequency response for the prototype model with coaxial probe excitations in the frequency range 50–150 GHz are evaluated, showing far than satisfactory performance. The S‐SIWG is then simulated in the 0.5–1.5 THz bandwidth, presenting excellent insertion loss. A SiGe S‐SIWG prototype was fabricated and tested at 15–60 GHz. © 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:2438–2444, 2012; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.27060
Circularly polarized slotted‐ground microstrip antennas for radiofrequency identification readers
Authors: Randy Oktavinus Tanawie , Nasimuddin  , Alphones Arokiaswami 
Published: July 2012

AbstractThe single‐feed, circularly polarized microstrip antennas (CPMAs) based on the slotted‐ground plane are investigated for radiofrequency identification readers.The conventional CPMA with truncated corners is also studied to compare with the proposed CPMA's performances. In the proposed designs, four square slots with asymmetrical configuration are etched in the diagonal directions on the ground plane of the antenna to achieve circularly polarized radiation. The proposed CPMAs are designed with low‐cost FR4 substrate and RO4003C substrate and their performances are compared. The antenna bandwidth is also studied on thin and thick dielectric substrates. © 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:2304–2309, 2012; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.27075
Pulse width and peak power optimization in a mode‐locked fiber laser with a semiconductor saturable absorber mirror
Authors: Cho Seung Bum , Song Hoseong , Gee Sangyoun , Park Chang‐Soo , Kim Dug Young 
Published: July 2012

AbstractIn this comprehensive study, we report on the pulse characteristics of a mode‐locked fiber laser comprised of an ytterbium (Yb)‐doped fiber and a semiconductor saturable absorber mirror (SESAM). We show experimentally that the pulse width and peak power of a mode‐locked fiber laser were continuously changed by moving the axial position of the SESAM in the laser cavity. The principle of this pulse width adjustment is explained and demonstrated with a simple numerical simulation. © 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:2256–2261, 2012; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.27077
Millimeter‐wave miniaturized hybrid couplers integrated on advanced bicmos technology
Authors: Titz Diane , Ferrero Fabien , Debroucke Romain , Pilard Romain , Luxey Cyril , Gianesello Frédéric , Jan Sébastien , Gloria Daniel , Jacquemod Gilles 
Published: July 2012

AbstractIn this article, we present the design and the measurement of two hybrid couplers for millimeter‐wave applications realized in the BiCMOS9MW 130nm process (ST Microelectronics). The aim is to demonstrate several miniaturization possibilities of a conventional branchline coupler while maintaining a constant 90° phase shift and a low insertion loss over the full 57–66‐GHz band. The first miniaturized coupler is composed of meandered transmission lines; the second is a quasi‐lumped quadrature coupler with discrete capacitors. The performance of these circuits is compared with the most recent on‐chip 60‐GHz couplers. We especially demonstrate the possibility to achieve state‐of‐the‐art performance while using miniaturization techniques. © 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:2221–2223, 2012; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.27079
UWB monopole microstrip antenna using fractal tree unit‐cells
Authors: Naser‐Moghadasi M. , Sadeghzadeh R.A. , Aribi T. , Sedghi T. , Virdee B. S. 
Published: July 2012

AbstractThis article presents the design of a novel and compact ultra‐wideband fractal‐based monopole antenna. Enhancement of the antenna's bandwidth is achieved by increasing the unit‐cells of the fractal tree without significantly impacting on the antenna's physical size. The actual size of the miniature antenna is limited to 24 × 24 × 1 mm3 and it operates across 2.1–11.52 GHz for VSWR ≤ 2. The proposed fractal structure makes the antenna flexible in terms of resonance and bandwidth control, which is a function of iteration order of the fractal used. The efficiency of the prototype antennas fabricated was evaluated through simulations and measurements. The measured results confirm the antenna radiates omnidirectionally and has a large impedance bandwidth. © 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:2366–2370, 2012; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.27081
A low‐chip area and low‐phase noise hybrid phase‐locked loop
Authors: Huang Jhin‐Fang , Hsu Chien‐Ming , Chen Kuo‐Lung 
Published: July 2012

AbstractA low‐chip area and low‐phase noise phase‐locked loop (PLL) combining fractional‐N and integer‐N modes operating at 2.4 GHz band is proposed and fabricated in TSMC 0.18‐μm CMOS process.The proposed PLL with a Gm‐boosted Colpitts voltage‐controlled oscillator improves phase noise and a hybrid design of different divider loops achieves fast lock. At 1.8 V supply voltage, the proposed PLL shows a wide tuning range from 2.14 to 2.36 GHz, corresponding to 9.7%, a phase noise of −119.3 dBc/Hz at an offset frequency of 1 MHz from the carrier frequency of 2.14 GHz, a power consumption of 17.3 mW, and an output power of −15.37 dBm. Including pads, the chip area only occupies 0.588 (0.87 × 0.67) mm2. © 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:2295–2300, 2012; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.27082
All‐optical OOK‐to‐QAM modulation format conversion utilizing parallel SOA‐MZI wavelength converters
Authors: Turkiewicz Jarosław Piotr 
Published: July 2012

AbstractA novel all‐optical modulation format conversion scheme from on‐off keying to quadrature amplitude modulation (QAM) utilizing wavelength conversion in the semiconductor optical amplifier Mach–Zehnder Interferometers is proposed. The numerical simulations show generation of the 16‐QAM signal proofing the principle of the proposed concept and its utility in future telecommunication systems. © 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:2429–2433, 2012; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.27084
A compact wideband CMOS LNA with low power consumption
Authors: Jang Yohan , Choi Jaehoon 
Published: July 2012

AbstractIn this letter, a wideband low noise amplifier (LNA) operating at 1–5 GHz is proposed.The circuit is designed with a TSMC 0.18‐μm RF CMOS process. To obtain high transconductance with low power consumption, two types of inverters are used. The proposed LNA is expected to reduce the size of chip about 70–80% by using only the single‐spiral inductor. The measured voltage gain is 14.4–15.5 dB and noise figure (NF) is 4.3–5.0 dB from 1–5 GHz. The total power consumption of the proposed LNA is 9.8 mW from a 1.4 V supply voltage and chip area occupies only 0.5 × 0.5 mm2. © 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:2360–2363, 2012; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.27086
Design of high efficiency RF‐DC conversion circuit using novel termination networks for RF energy harvesting system
Authors: Chaudhary Girdhari , Kim Phirun , Jeong Yongchae , Yoon Jae‐Hun 
Published: July 2012

AbstractIn this letter, a high efficiency RF‐DC conversion circuit for RF energy harvesting system (EHS) is proposed.The proposed circuit consists of Villard voltage doubler, the input and output termination networks which can suppress the unwanted RF signals produced by Schottky diodes. The fabricated circuit operating at 2.45 GHz has a maximum RF‐DC conversion efficiency of 83.37% and output voltage of 11.30 V at an input RF power of 140 mW. The proposed circuit has an advantage of simple design which helps to reduce the design cost of EHSs. © 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:2330–2335, 2012; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.27087
Embedded multislotted PIFAs for remotely powered passive UHF RFID tags
Authors: Contopanagos Harry F. , Broutas Panayotis , Chatzandroulis Stavros 
Published: July 2012

AbstractWe present a compact planar antenna that can be embedded within low‐frequency UHF power‐harvesting tag platforms.The antenna is a planar inverted‐F antenna‐type design with a set of optimized slots and provides large bandwidths, comparable to half‐wave dipoles, while maintaining a low profile and small area. Hence, it can be embedded within the PCB of power‐harvesting tags operating even at low UHF frequencies, resulting in a compact, slim overall device. We demonstrate this by embedding the antenna within a 430 MHz low‐power discrete‐component harvester tag, and we have designed and manufactured and verified antenna performance by both antenna measurements and tag link measurements. An added advantage of this topology is that tags with this antenna can be placed very near large metal structures without shorting or detuning, unlike tags with standard external dipole antennas. © 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:2379–2383, 2012; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.27096
Quantitative neuromuscular ultrasound in the intensive care unit
Authors: Cartwright Michael S. , Kwayisi Golda , Griffin Leah P. , Sarwal Aarti , Walker Francis O. , Harris Jessica M. , Berry Michael J. , Chahal Preet S. , Morris Peter E. 
Published: July 2012

AbstractIntroduction: Intensive care unit acquired weakness (ICU‐AW) results from a complex mixture of nerve and muscle pathology, and early identification is challenging. This pilot study was designed to examine the ultrasonographic changes that occur in muscles during ICU hospitalization. Methods: Patients admitted to the ICU for acute respiratory failure were enrolled prospectively and underwent serial muscle ultrasound for thickness and gray‐scale assessment of the tibialis anterior, rectus femoris, abductor digiti minimi, biceps, and diaphragm muscles over 14 days. Results: Sixteen participants were enrolled. The tibialis anterior (P = 0.001) and rectus femoris (P = 0.041) had significant decreases in gray‐scale standard deviation when analyzed over 14 days. No muscles showed significant changes in thickness. Conclusions: Ultrasound is an informative technique for assessing muscles of patients in the ICU, and lower extremity muscles demonstrated increased homogeneity during ICU stays. This technique should be examined further for diagnosing and tracking those with ICU‐AW. Muscle Nerve, 2013
Min‐Max quickest path problems
Authors: Ruzika Stefan , Thiemann Markus 
Published: July 2012

AbstractIn a dynamic network, the quickest path problem asks for a path such that a given amount of flow can be sent from source to sink via this path in minimal time. In practical settings, for example, in evacuation or transportation planning, the problem parameters might not be known exactly a priori. It is therefore of interest to consider robust versions of these problems in which travel times and/or capacities of arcs depend on a certain scenario. In this article, min–max versions of robust quickest path problems are investigated and, depending on their complexity status, exact algorithms or fully polynomial‐time approximation schemes are proposed. © 2012 Wiley Periodicals, Inc. NETWORKS, 2012
Linearly many faults in arrangement graphs
Authors: Cheng Eddie , Lipták László , Yuan Allen 
Published: July 2012

AbstractThe star graph proposed by Akers et al. (Proc Int Conf Parallel Process, University Park, PA, 1987, pp. 393–400) has many advantages over the n‐cube. However, it suffers from having large gaps in the possible number of vertices. The arrangement graph was proposed by Day and Tripathi (Inf Process Lett 42 (1992), 235–241) to address this issue. Since it is a generalization of the star graph, it retains many of the nice properties of the star graph. In fact, it also generalizes the alternating group graph (Jwo et al., Networks 23 (1993), 315–326). There are many different measures of structural integrity of interconnection networks. In this article, we prove results of the following type for the arrangement graph: If h(r,n,k) vertices are deleted from the arrangement graph An,k, the resulting graph will either be connected or have a large component and small components having at most r − 1 vertices in total. Our result is tight for r ≤ 3, and it is asymptotically tight for r ≥ 4. Moreover, we also determine the cyclic vertex‐connectivity of the arrangement graph. © 2012 Wiley Periodicals, Inc. NETWORKS, 2013
New liquid crystalline columnar poly(epichlorohydrin‐co‐ethylene oxide) derivatives leading to biomimetic ion channels
Authors: Bhosale Suryakant Vilasrao , Rasool Muhammad Azam , Reina José Antonio , Giamberini Marta 
Published: July 2012

AbstractA new family of liquid crystalline columnar polyethers was obtained by modification of Poly(epichlorohydrin‐co‐ethylene oxide) (P(ECH‐co‐EO)) with the dendron 3,4,5‐tris[4‐(n‐dodecan‐1‐yloxy)benzyloxy]benzoate, under different conditions. The highest modification degree that we could achieve was 69%. The copolymers were fully characterized by 1H and 13C nuclear magnetic resonance (NMR), differential scanning calorimetry (DSC), polarized optical microscopy (POM), and X‐ray diffraction (XRD). All copolymers exhibited liquid‐crystalline columnar behavior whose range of stability depended on the modification degree. X‐ray diffraction experiments on oriented samples showed that the dendrons are approximately perpendicular to the column axis and that their average number per unit cell ranged from 5 to 6. The formation of a stable columnar mesophase in the polyether should determine the presence of a continuous ion channel along the column axis. Therefore, these copolymers are suitable candidates for the preparation of membranes for small cation transport, in agreement with the results that we obtained by using poly(oxy‐1‐chloro methylethylene) (PECH) modified with the same dendron. POLYM. ENG. SCI., 2013. © 2012 Society of Plastics Engineers
Fabrication and applications of cellulose nanoparticle‐based polymer composites
Authors: Pandey Jitendra K. , Nakagaito Antonio N. , Takagi Hitoshi 
Published: July 2012

AbstractThe impressive mechanical properties, reinforcing capability, abundance, low weight, low filler load requirements, and biodegradable nature of nanoparticles from bioresources such as cellulose, make it an ideal candidate for the development of green polymer nanocomposites. Significant amount of research in this area is primarily focused on the extraction, qualitative surface modification, and evaluation of mechanical performance after filling in polymer matrixes at different ratios. The extreme agglomeration tendency, hydrophilic nature, difficult dispersion in many organic solvents of cellulose nanoparticles are the challenging obstacles when fabrication of such nanocomposites is concerned. Traditional processing of polymer composites mainly through extrusion and melt compounding, is not easily possible in case of cellulose nanocomposites due to higher possibility of poor dispersion and degradation of nanofibers. Therefore, issues related to the fabrication of nanofiber‐based products and their application appears to be one of the most important areas in order to enhance their competitiveness with other nanoparticles. This review is aimed to summarize the recent accomplishments and issues involving the use of cellulose nanoparticles in the development of new polymeric materials. POLYM. ENG. SCI., 2013. © 2012 Society of Plastics Engineers