bluuebunny/crossref_metadata_2025_split huggingface dataset:
Fatigue in Parkinson's disease: The contribution of cerebral metabolic changes
Authors: Cho Sang Soo , Aminian Kelly , Li Crystal , Lang Anthony E. , Houle Sylvain , Strafella Antonio P. 
Published: August 2016

AbstractFatigue is a common and disabling non‐motor symptom in Parkinson's disease associated with a feeling of overwhelming lack of energy. The aim of this study was to identify the neural substrates that may contribute to the development of fatigue in Parkinson's disease. Twenty‐three Parkinson's disease patients meeting UK Brain Bank criteria for the diagnosis of idiopathic Parkinson's disease were recruited and completed the 2‐[18F]fluoro‐2‐deoxy‐D‐glucose (FDG)‐PET scan. The metabolic activities of Parkinson's disease patients with fatigue were compared to those without fatigue using statistical parametric mapping analysis. The Parkinson's disease group exhibiting higher level of fatigue showed anti‐correlated metabolic changes in cortical regions associated with the salience (i.e., right insular region) and default (i.e., bilateral posterior cingulate cortex) networks. The metabolic abnormalities detected in these brain regions displayed a significant correlation with level of fatigue and were associated with a disruption of the functional correlations with different cortical areas. These observations suggest that fatigue in Parkinson's disease may be the expression of metabolic abnormalities and impaired functional interactions between brain regions linked to the salience network and other neural networks. Hum Brain Mapp 38:283–292, 2017. © 2016 Wiley Periodicals, Inc.
Hippocampal and striatal M1‐muscarinic acetylcholine receptors are down‐regulated following bilateral vestibular loss in rats
Authors: Aitken Phillip , Benoit Alice , Zheng Yiwen , Philoxene Bruno , Le Gall Anne , Denise Pierre , Besnard Stephane , Smith Paul F. 
Published: August 2016

AbstractPermanent vestibular loss has detrimental effects on the hippocampus, resulting in a disruption to spatial learning and memory, hippocampal theta rhythm and place cell field spatial coherence. Little is known about the vestibular system‐related hippocampal cholinergic transmission. Since the pharmacological blockade of muscarinic acetylcholine (ACh) receptors within the hippocampus produces deficits in learning and memory, we hypothesized that ACh receptors may at least partly support the integration of vestibular input. Consequently, we examined the expression of M1 muscarinic ACh receptors in the hippocampus at 7 and 30 days following bilateral vestibular lesions (BVL) in rats using autoradiography. Animals were divided into sham (n = 12) and BVL (n = 11) groups. BVL animals received intratympanic injections of sodium arsanilate (30 mg/0.1 ml) under isoflurane anesthesia and sham animals received the same volume of saline. Analysis of the brain tissue revealed a significant reduction in the number of M1 receptors throughout the hippocampus and striatum at 30 days (P ≤ 0.0001), but not at 7 days following BVL. This suggests that the changes in learning and memory seen following vestibular damage may be in part due to the loss of M1 muscarinic receptors in the hippocampus and striatum. © 2016 Wiley Periodicals, Inc.
Does fire alter soil water repellency in subtropical coastal sandy environments?
Authors: White Amy M. , Lockington David A. , Gibbes Badin 
Published: August 2016

AbstractIrregular wetting, water repellency, and preferential flow are well‐documented properties of coastal sandy podzols, though little is known about the effect of fire on unsaturated zone processes in this environment. This study investigates water repellency at and below the soil surface in two coastal sandy podzols following bushfire. Water drop penetration time tests were applied to burned and unburned soils at a high dune field site in South East Queensland, Australia. It was found that the mean water drop penetration time of the burned soil was four times that of the unburned soil, but both soils were largely non‐repellent. Post‐fire repellency peaked below the surface in a patchy layer, in contrast to the laterally extensive layer reported in other studies, and high organic matter content in the soil did not appear to significantly influence repellency post‐burn. Non‐parametric statistics were used to quantify the high spatial variability in water repellency, which was ultimately insufficiently captured by atypically large (n = 1000 drop) datasets. This study confirms the presence of naturally occurring repellency and patchy infiltration in sandy soils while demonstrating that conclusively describing the influence of fire is challenging in a soil with heterogeneous infiltration characteristics. With respect to this uncertainty, it appears that fire does not increase soil water repellency such that infiltration and runoff processes due to fire‐induced water repellency would differ post‐burn.
The electrochemical behavior of nitinol in simulated gastric fluid
Authors: Pound Bruce G. 
Published: August 2016

AbstractIncreased use is being made of nitinol for implants that are exposed to gastric fluid. However, few corrosion studies have involved nitinol in an appropriate acidified chloride solution. In this work, the electrochemical behavior of electropolished (EP) nitinol was examined in simulated gastric fluid, the corresponding neutral solution with the same concentration (0.6%) of NaCl, and 0.9% NaCl. Cyclic potentiodynamic polarization was used to evaluate the susceptibility to pitting corrosion, while electrochemical impedance spectroscopy was used to examine the passive oxide film. The potentiodynamic tests showed that the susceptibility of EP nitinol to pitting corrosion is affected by chloride concentration and pH. Acidification, in particular, resulted in the susceptibility being markedly higher in gastric fluid compared with that in the corresponding neutral NaCl solution. The impedance data could be fitted using a parallel resistance‐capacitance (as a constant phase element) circuit associated with the oxide film. The thickness of the oxide was determined from the capacitive component and found to be little affected by chloride concentration. In contrast, acidification increased the solubility of the oxide enough to decrease the thickness of the film from 5.3 nm in 0.6% NaCl to 4.2 nm in gastric fluid. The resistivity of the oxide obtained from the resistance was affected by chloride concentration (0.7 × 1011 and 1.7 × 1011 Ω m in 0.9% and 0.6% NaCl, respectively) and particularly by pH (6.3 × 1011 Ω m in gastric fluid). The resistivity values suggest that the oxide was more defective in the neutral solutions. © 2016 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 105B:2394–2400, 2017.
In vivo triglyceride composition of abdominal adipose tissue measured by 1H MRS at 3T
Authors: Hamilton Gavin , Schlein Alexandra N. , Middleton Michael S. , Hooker Catherine A. , Wolfson Tanya , Gamst Anthony C. , Loomba Rohit , Sirlin Claude B. 
Published: August 2016

PurposeTo investigate the regional variability of adipose tissue triglyceride composition in vivo using 1H MRS, examining potential confounders and corrections for artifacts, to allow for adipose tissue spectrum estimation.Materials and Methods1H magnetic resonance (MR) stimulated echo acquisition mode (STEAM) spectra were acquired in vivo at 3T from 340 adult patients (mean age 48.9 years, range 21–79 years; 172 males, 168 females; mean body mass index [BMI] 34.0, range 22–49 kg/m2) with known or suspected nonalcoholic fatty liver disease (NAFLD) in deep (dSCAT), surface (sSCAT) subcutaneous adipose tissue, and visceral adipose tissue (VAT). Triglyceride composition was characterized by the number of double bonds (ndb) and number of methylene‐interrupted double bonds (nmidb). A subset of patients (dSCAT n = 80, sSCAT n = 55, VAT n = 194) had the acquisition repeated three times to examine the repeatability of ndb and nmidb estimation.ResultsMean ndb and nmidb showed significant (P < 0.0001) differences between depots except for dSCAT and sSCAT nmidb (dSCAT ndb 2.797, nmidb 0.745; sSCAT ndb 2.826, nmidb 0.737; VAT ndb 2.723, nmidb 0.687). All ndb and nmidb estimates were highly repeatable (VAT ndb ICC = 0.888, nmidb ICC = 0.853; sSCAT: ndb ICC = 0.974, nmidb ICC = 0.964; dSCAT: ndb ICC = 0.959, nmidb ICC = 0.948).ConclusionAdipose tissue composition can be estimated repeatably using 1H MRS and different fat depots have different triglyceride compositions.Level of Evidence: 2J. MAGN. RESON. IMAGING 2017;45:1455–1463
Non‐destructive detection of dicyandiamide in infant formula powder using multi‐spectral imaging coupled with chemometrics
Authors: Liu Changhong , Liu Wei , Yang Jianbo , Chen Ying , Zheng Lei 
Published: August 2016

AbstractBACKGROUNDDicyandiamide (DCD) contamination of milk and milk products has become an urgent and broadly recognised topic as a result of several food safety scares. This study investigated the potential of using multi‐spectral imaging (405–970 nm) coupled with chemometrics for detection of DCD in infant formula powder. Partial least squares (PLS), least squares‐support vector machines (LS‐SVM), and back‐propagation neural network (BPNN) were applied to develop quantitative models.RESULTSCompared with PLS and LS‐SVM, BPNN considerably improved the prediction performance with coefficient of determination in prediction () = 0.935 and 0.873, residual predictive deviation (RPD) = 3.777 and 3.060 for brand 1 and brand 2 of infant formula powders, respectively. Besides, multi‐spectral imaging was able to differentiate unadulterated infant formula powder from samples containing 0.01% DCD with no misclassification using BPNN model.CONCLUSIONThe study demonstrated that multi‐spectral imaging combined with chemometrics enables rapid and non‐destructive detection of DCD in infant formula powder. © 2016 Society of Chemical Industry
Response rates of hepatic arterial infusion pump therapy in patients with metastatic colorectal cancer liver metastases refractory to all standard chemotherapies
Authors: Cercek Andrea , Boucher Taryn M. , Gluskin Jill S. , Aguiló Ariel , Chou Joanne F. , Connell Louise C. , Capanu Marinela , Reidy‐Lagunes Diane , D'Angelica Michael , Kemeny Nancy E. 
Published: August 2016

Background and ObjectivesTo evaluate the role of hepatic arterial infusion (HAI) in patients with metastatic colorectal cancer (mCRC) liver metastases (LM) refractory to oxaliplatin, irinotecan, and fluorouracil‐based treatments.MethodsA search identified patients with mCRC treated after tumor progression on at least three standard systemic therapies.ResultsOne hundred and ten patients met criteria for inclusion (i.e., progression on at least three standard agents). Fifty seven patients had LM‐only and 53 patients had LM and low volume extrahepatic metastases (LME). Patients with LM‐only and LME had a response rate (RR) of 33% and 36%, median survival of 20 months and 11.4 months, respectively. Patients with LM‐only had progression free survival of 6 months and hepatic progression free survival of 7.56 months. In a secondary analysis, 46 patients were RECIST‐refractory to all standard therapies: LM‐only (n = 24) and LME (n = 22). LM‐only and LME had a RR of 29% and 36%, and median survival 17.2 months and 9.1 months, respectively.ConclusionsPatients with refractory mCRC LM can achieve a response to HAI resulting in antitumor activity and improvement in survival. Responses are rarely seen in such heavily treated patients with systemic therapy alone, suggesting a regional directed approach is useful. J. Surg. Oncol. 2016;114:655–663. © 2016 Wiley Periodicals, Inc.
Experimental Investigation on Upgrading of Lignin‐Derived Bio‐Oils: Kinetic Analysis of Anisole Conversion on Sulfided CoMo/Al2O3 Catalyst
Authors: Rahimpour Hamid Reza , Saidi Majid , Rostami Parisa , Gates Bruce C. , Rahimpour Mohammad Reza 
Published: August 2016

ABSTRACTKinetics of the hydroprocessing of anisole, a compound representative of lignin‐derived bio‐oils, catalyzed by a commercial sulfided CoMo/Al2O3, was determined at 8–20 bar pressure and 573–673 K with a once‐through flow reactor. The catalyst was sulfided in an atmosphere of H2 + H2S prior to the measurement of its performance. Selectivity‐conversion data were used as a basis for determining an approximate, partially quantified reaction network showing that hydrodeoxygenation (HDO), hydrogenolysis, and alkylation reactions take place simultaneously. The data indicate that these reactions can be stopped at the point where HDO is virtually completed and hydrogenation reactions (and thus H2 consumption) are minimized. Phenol was the major product of the reactions, with direct deoxygenation of anisole to give benzene being kinetically almost insignificant under our conditions. We infer that the scission of the Cmethyl–O bond is more facile than the scission of the Caromatic–O bond, so that the HDO of anisole likely proceeds substantially through the reactive intermediate phenol to give transalkylation products such as 2‐methylphenol. The data determine rates of formation of the major primary products. The data show that if oxygen removal is the main processing goal, higher temperatures and lower pressures are favored.
Layer‐by‐Layer Coating of Solid Drug Cores: A Versatile Method to Improve Stability, Control Release and Tune Surface Properties
Authors: Polomska Anna , Leroux Jean‐Christophe , Brambilla Davide 
Published: August 2016

Layer‐by‐layer coating is a simple and versatile technique based on the sequential deposition of molecular species on planar surfaces or colloidal templates. Its relevance in drug delivery primarily emerges from its versatility to control the release rate of the cargo encapsulated within the colloidal core. The focus of this review is the layer‐by‐layer encapsulation of colloidal particles purely composed of drug, including the core fabrication step, coating materials and techniques, multilayer shell permeability control, and reported in vitro and in vivo outcomes.
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U‐shape broadband monopole antenna with modified ground plane
Authors: Mondal Kalyan , Sarkar Partha Pratim 
Published: August 2016

ABSTRACTIn this article an U‐shape broadband monopole antenna with rectangular slots loaded ground plane has been designed and analysis. The proposed antenna covers the frequency band of (1.55–8.55 GHz) with multiresonating frequency at 1.65, 2.9, and 7.95 GHz. The effect of movement of radiating patch on the dielectric substrate and the effect of slots on the ground plane are studied. The maximum impedance bandwidth of 138% (simulated) and 142% (measured) with maximum peak gain 3.59 dBi (simulated) and 4 dBi (measured) are obtained. It is very much useful in modern wireless communication systems as an electronics device. © 2016 Wiley Periodicals, Inc. Microwave Opt Technol Lett 58:2544–2547, 2016
Wideband circularly polarized SIW Cavity‐Backed slot antenna with sequential rotation feeding
Authors: Kulkarni Pushkar B. , van der Weide Daniel 
Published: August 2016

ABSTRACTWe present a dual resonant substrate integrated waveguide cavity‐backed slot antenna with over 34% bandwidth at X‐band. A sequential rotation feeding scheme is employed to achieve circular polarization using two differential ports, resulting in excellent isolation. The antenna achieves wideband circularly polarized radiation with symmetric patterns in both principal planes. The full‐wave simulation results demonstrate a peak gain of 6.0 dB and a radiation efficiency >96% over the operating impedance bandwidth. © 2016 Wiley Periodicals, Inc. Microwave Opt Technol Lett 58:2566–2570, 2016
A UWB antenna with band‐notched filters using slot‐type split ring resonators
Authors: Tsai Lin‐Chuan , Chen Wei‐Jie 
Published: August 2016

ABSTRACTIn this article, a new configuration of ultra‐wideband (UWB) monopole antenna employs two slot‐type split ring resonators (SRRs) with band‐notched filters in 5‐6 GHz WiMAX/WLAN bands. The UWB antenna consists of the octagonal, heptagonal, and triangular patches. A 50 microstrip feedline is employed to stimulate the monopole antenna. With adjusting the size and the position of two slot‐type SRRs on the ground plane, the UWB antenna produce a single band‐notched and decrease interference with the WiMAX/WLAN bands. The results for VSWR, far‐field H‐ and E‐plane radiation patterns and gain of the proposed antennas are presented and discussed. The radiation area of the design antenna is 24 × 17.4 mm2. The measured results show a good agreement with the simulated results. © 2016 Wiley Periodicals, Inc. Microwave Opt Technol Lett 58:2595–2598, 2016
A printed volcano smoke antenna for personal communication systems
Authors: Garduño‐Nolasco Edson , Sosa‐Pedroza Jorge , Jardón‐Aguilar Hildeberto 
Published: August 2016

ABSTRACTA novel printed version of the classic volcano smoke antenna is presented. Its remarkable bandwidth goes from 700 MHz up to 6 GHz for a VSWR < 2, which covers the actual personal communication systems including the LTE emerging system. The antenna gain remains in values above 3 dB in all its bandwidth meanwhile its total efficiency is >90%. The radiation patterns stay almost omnidirectional. The simulated results and the measurement data exhibited an excellent agreement. © 2016 Wiley Periodicals, Inc. Microwave Opt Technol Lett 58:2592–2595, 2016
Modeling a mim capacitor including series resistance and inductance for characterizing nanometer high‐K dielectric films
Authors: Cortés‐Hernández Diego M. , Valderrama‐B René , Torres‐Torres Reydezel , Molina Joel 
Published: August 2016

ABSTRACTA model to represent the parasitic series resistance and inductance inherent to the capacitor plates is proposed. The model is used to determine the frequency‐dependent permittivity and loss tangent of high‐k dielectrics (HfO2 and Al2O3) in metal‐insulator‐metal capacitors. Experimental results are in agreement with nominal values reported in the literature. © 2016 Wiley Periodicals, Inc. Microwave Opt Technol Lett 58:2599–2602, 2016
Metamaterial‐inspired microwave sensor for measurement of complex permittivity of materials
Authors: Raj Aakriti , Kumar Jha Abhishek , Ansari M. Arif Hussain , Akhtar M. Jaleel , Panda Sidhartha 
Published: August 2016

ABSTRACTThis article presents the design and development of a metamaterial inspired planar microwave sensor for the measurement of complex permittivity of the solid and liquid sample under test (SUT). A hexagonal complementary split ring resonator (CSSR) is etched on the ground plane of a 50 Ω microstrip line, which is excited by the electric field component normal to the ground plane. The proposed hexagonal sensor possesses a good sensitivity, and the SUT placed over the CSSR perturbs the electric field associated with the CSRR giving rise to a change in the resonance frequency and peak attenuation of the transmission coefficient under loaded condition. An empirical relation between sensor resonance characteristics and the complex permittivity of the SUT is derived to determine the complex permittivity of the SUT. The designed sensor is fabricated on an FR4 substrate and is experimentally validated for various standard solid samples and hazardous chemical liquids. The proposed sensor is working in the frequency range of 5.3–8.2 GHz and is capable of measuring a number of samples with their dielectric properties varying over a wide range. © 2016 Wiley Periodicals, Inc. Microwave Opt Technol Lett 58:2577–2581, 2016
Fabrication of microstrip patch antenna using novel hybrid printing technology
Authors: Hussain Shah Syed Imran , Lee Dongju , Tentzeris Manos M. , Lim Sungjoon 
Published: August 2016

ABSTRACTIn this article, a novel hybrid printing technology that realizes a microstrip patch antenna is introduced. The proposed hybrid printing technology uses both two‐ and three‐dimensional (2D and 3D) printing technologies. The antenna's dielectric materials are built using a 3D printer. The metallic pattern is printed using a commercial inkjet printer. Polylactic acid (PLA) is used for the filament of the 3D printer and silver nanoparticle ink is printed on paper using the inkjet printer. For a highly efficient antenna design with lossy PLA material, the mesh PLA is printed and its electromagnetic parameters are characterized. Finally, the printed patch antenna shows a return loss of 24 dB and a peak gain of 7 dBi at 1.9 GHz. © 2016 Wiley Periodicals, Inc. Microwave Opt Technol Lett 58:2602–2606, 2016
A new launching scheme for ECR plasma based on two‐waveguides‐array
Authors: Torrisi G. , Sorbello G. , Leonardi O. , Mascali D. , Celona L. , Gammino S. 
Published: August 2016

ABSTRACTThis article describes the design, the simulations, and the tests of a microwave launcher for alternative plasma‐heating schemes in the Flexible Plasma Trap (FPT). A waveguide‐phased array has been designed to tilt the wave injection angle: this will allow modal conversion to generate Electrostatic Bernstein Waves and then to obtain overdense plasmas. © 2016 Wiley Periodicals, Inc. Microwave Opt Technol Lett 58:2629–2634, 2016
Asymmetric peak to average power ratio impacts on direct‐detected optical OFDM transmission link
Authors: Won Yong‐Yuk , Kim Chang‐Hun , Han Sang‐Kook , Seo Dongsun 
Published: August 2016

ABSTRACTIn this article, the impact of asymmetric peak to average power ratio (PAPR) of orthogonal frequency division multiplexing (OFDM) signal is investigated in direct detection OFDM transmission for the first time. The asymmetric PAPR is produced due to the positive definiteness of direct optical OFDM modulation. It gets bigger and bigger due to the generation of different time delay of each OFDM subcarrier, which is caused by chromatic dispersion. The performance of direct detection optical OFDM link in the presence of asymmetric PAPR is evaluated measuring error vector magnitude (EVM) of quadrature phase shift keying (QPSK) and 16‐qudrature amplitude modulation (QAM) symbols according to the optical transmission length and the transmission rate; 14% EVM (bit error rate of 10−3) of QPSK symbol is observed at the optical transmission length of 400 km despite the usage of channel equalization as well as the insertion of cyclic prefix when the asymmetric PAPR of input optical OFDM signal is above 25 dB. © 2016 Wiley Periodicals, Inc. Microwave Opt Technol Lett 58:2662–2665, 2016
A novel compact dual‐band filter based on quarter‐mode substrate integrated waveguide and complementary split‐ring resonator
Authors: Wang Ke , Tang Hongyan , Wu Runmiao , Yu Chao , Zhang Jian , Wang Xiaotong 
Published: August 2016

ABSTRACTThis article proposes a novel miniaturized dual‐band filter, which is implemented by combining quarter‐mode substrate integrated waveguide (QMSIW) and complementary split‐ring resonator (CSRR). The resonator consists of a QMSIW cavity and CSRR structure, which can miniaturize SIW filter by increasing electrical length of the CSRR. With the combination of two second‐order QMSIW filters of different size, two propagating passbands can be generated. Based on the proposed structure, a dual‐band prototype is designed, fabricated, and measured. The measured passbands are centered at 3.5 GHz with about 3.3% bandwidth and 5.7 GHz with about 6.4% bandwidth. The measured minimum insertion loss for lower and upper bands is 0.98dB and 0.81dB respectively. While the insertion loss for all passbands is better than 2dB. The propose dual‐band filter has good performance in insertion loss with compact size, which has a great potential in the application of communication systems. © 2016 Wiley Periodicals, Inc. Microwave Opt Technol Lett 58:2704–2707, 2016