bluuebunny/crossref_metadata_2025_split huggingface dataset:
Enhanced bioremediation of oily sludge using co‐culture of specific bacterial and yeast strains
Authors: He Yong‐Ming , Duan Xin‐Guo , Liu Yi‐Sheng 
Published: June 2014

AbstractBACKGROUNDConsiderable volumes of petrochemical oily sludge can be generated from oil production and processing activities. Total petroleum hydrocarbons (TPH) contained in oily sludge are detrimental to human health and the environment. Thus, oily sludge is classified as a priority environmental pollutant by the US Environmental Protection Agency and it must be treated properly before discharge into the environment.RESULTSIn this study, a functional microbial consortium consisting of Bacillus subtilis, Bacillus megaterium, Achromobacter xylosoxidans, Pseudomonas fluorescens, Candida tropicalis and Rhodotorula dairenensis, isolated from petroleum‐contaminated soil, was applied for bioremediation of petrochemical oily sludge in a shake flask and oily sludge microcosm study. These strains utilized the oily sludge as sole source of carbon and energy. The oily sludge contained 21.5% (w/w, dry weight basis) of total petrol hydrocarbons (TPH). Results showed that the microbial consortium exhibited an excellent oily sludge degradation capacity, reducing 92.5% of aliphatics, 79.3% of aromatics, 48.6% of NSO‐containing compounds, 31.8% of asphaltenes and 80.6% of TPH, by the end of the 1‐year microcosm experiment. In contrast, biodegradation rates of these fractions were 83.3%, 17.5%, 8.4%, 4.7% and 56.1%, respectively, in the non‐inoculated treatment. These strains survived well and adapted to the oil sludge environment throughout the incubation period. Dehydrogenase and polyphenoloxidase activity of the oily sludge was remarkably promoted by inoculation of the microbial consortium.CONCLUSIONThe results indicated that the microbial consortium has the potential to be used in bioremediation of petrochemical oily sludge polluted environments. © 2014 Society of Chemical Industry
Histopathological predictors for local recurrence in patients with T3 and T4 rectal cancers without preoperative chemoradiotherapy
Authors: Akagi Yoshito , Hisaka Toru , Mizobe Tomoaki , Kinugasa Tetsushi , Ogata Yutaka , Shirouzu Kazuo 
Published: June 2014

Background and ObjectivesIdentification of suitable predictors of local recurrence (LR) in patients with rectal cancer would be of clinical benefit. The aim of this study was to identify histopathological factors that could predict LR.MethodsA total of 796 stage II/III patients with pT3 and pT4 rectal cancer who did not undergo preoperative chemoradiation were enrolled. LR was defined as intra‐pelvic recurrence only. Histopathological factors related to LR were investigated.ResultsLR was found in 25 patients (6.1%) with stage II and 54 patients (13.9%) with stage IIIB/IIIC. In patients with stage II, distance of mesorectal extension (DME) >4 mm (P = 0.011) and positive venous invasion (P = 0.035) were independent factors that predicted LR. In patients with stage IIIB/IIIC, circumferential resection margin (CRM) ≤1 mm (P = 0.003) and positive lymphatic invasion (P = 0.006) were independent factors. The cumulative 5‐year LR rate was higher (11.9%) in patients with a combination of DME > 4 mm and/or positive venous invasion for stage II (P < 0.001), and was also higher in patients with a combination of CRM≤1 mm and/or positive lymphatic invasion for stage IIIB and IIIC (22.2%; P < 0.002, and 34.3%; P < 0.006, respectively).ConclusionsImportant histopathological predictors for LR in patients with pT3 and pT4 rectal cancer were different at each stage. J. Surg. Oncol. 2014 110:739–744. © 2014 Wiley Periodicals, Inc.
Cytoreduction surgery with hyperthermic intraperitoneal chemotherapy in recurrent ovarian cancer improves progression‐free survival, especially in BRCA‐positive patients—A case‐control study
Authors: Safra Tamar , Grisaru Dan , Inbar Moshe , Abu‐Abeid Subhi , Dayan Danit , Matceyevsky Diana , Weizman Anat , Klausner Joseph M. 
Published: June 2014

BackgroundApproximately 70% of women diagnosed with advanced‐stage ovarian cancer experience disease recurrence. Survival data were compared between a group of recurrent epithelial ovarian cancer (rEOC) patients treated by cytoreduction and hyperthermic intraperitoneal chemotherapy (HIPEC) and a matched group of rEOC patients treated by systemic chemotherapy only (without surgery). Treatment outcome in relation to the patients' BRCA status was compared.MethodsTwenty‐seven rEOC patients treated by cytoreduction and HIPEC were selected from our database and matched (1:3) with 84 rEOC patients treated with chemotherapy only. Progression‐free survival (PFS) and overall survival (OS) in the two groups were analyzed and compared.ResultsThe estimated median PFS was 15 months in the HIPEC group and 6 months in the systemic chemotherapy group (P = 0.001). The median OS following HIPEC treatment has not been reached, since more than 70% of the women were alive at the time of analysis. The 5‐year survival rate was significantly higher in the HIPEC treated patients compared to that of the controls (79% vs. 45%, P = 0.016). BRCA status did not affect PFS.ConclusionsHIPEC after surgical cytoreduction in patients with rEOC appears beneficial compared to systemic chemotherapy treatment alone. The benefit is even greater in BRCA mutation carriers. J. Surg. Oncol. 2014 110:661–665. © 2014 Wiley Periodicals, Inc.
The effect of radio‐collar weight on survival of migratory caribou
Authors: Rasiulis Alexandre L. , Festa‐Bianchet Marco , Couturier Serge , Côté Steeve D. 
Published: June 2014

ABSTRACTRadio transmitters are widely used in wildlife management; therefore, it is essential to assess any effects that they may have on animal survival. We compared the survival of 269 randomly selected adult migratory caribou (Rangifer tarandus) fitted with either light very high frequency or heavy Argos satellite collars during the same period. Heavy collars reduced annual survival of caribou in a declining population with generally poor body condition by about 18%. Accurate estimates of survival are crucial for management decisions and possible effects of collars should be considered when calculating estimates. © 2014 The Wildlife Society.
Coating‐lubricant combination for improving tribo‐system performance
Authors: Minami Ichiro , He Xin , Prakash Braham 
Published: June 2014

ABSTRACTNew tribo‐systems composed of green chemicals have been investigated. Compatibility of friction modifiers with DLC was evaluated by using SRV test machine. A Zn‐free lubricant formulation showed a steady‐state friction coefficient of 0.15 for steel/steel contact. Hydrogenated DLC coating showed similar tribological properties when slid against steel. Interestingly, this lubricant showed low friction coefficient of 0.02 for hydrogen‐free amorphous DLC when slid against steel. A model friction modifier improved the running‐in performance and reduced wear for hydrogen‐free DLC, while it marginally increased steady‐state friction coefficient up to 0.04. The importance of material–lubricant combination and lubrication model has been highlighted. Copyright © 2014 John Wiley & Sons, Ltd.
Fast and Green Synthesis of a Smart Glyco‐surface via Aqueous Single Electron Transfer‐Living Radical Polymerization
Authors: Xue Lulu , Lyu Zhonglin , Shi Xiujuan , Tang Zengchao , Chen Gaojian , Chen Hong 
Published: June 2014

Facile synthesis of a silicon surface modified by poly(N‐isopropylacrylamide‐co‐N‐acryloyl glucosamine) [poly(NIPAAm‐co‐AGA)] brushes prepared by surface‐initiated single electron transfer‐living radical polymerization (SET‐LRP) in water is described. The copolymerization exhibits a fast polymerization rate and good controllability. Moreover, copolymers with variable AGA content and comparable thickness are synthesized and the effect of the AGA content on the wettability and thermoresponsive property of the surface are studied. Also, both the non‐specific protein resistance ability and the specific protein adsorption ability of the Si‐poly(NIPAAm‐co‐AGA) surface are investigated and the results indicate that the copolymer‐grafted surface demonstrates enhanced resistance to non‐specific protein adsorption and shows selective recognition of Concanavalin A (Con A). Together, these results prove that aqueous SET‐LRP is promising for facile surface modification.
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Protein Capsules with Cross‐Linked, Semipermeable, and Enzyme‐Degradable Surface Barriers for Controlled Release
Authors: Zhou Jianhua , Hyun Dong Choon , Liu Hang , Wu Hongkai , Xia Younan 
Published: June 2014

This paper describes a method for fabricating protein‐based capsules with semipermeable and enzyme‐degradable surface barriers. It involves the use of a simple fluidic device to generate water‐in‐oil emulsion droplets, followed by cross‐linking of proteins at the water–oil interface to generate a semipermeable surface barrier. The capsules can be readily fabricated with uniform and controllable sizes and, more importantly, show selective permeability toward molecules with different molecular weights: small molecules like fluorescein sodium salt can freely diffuse through the surface barrier while macromolecules such as proteins can not. The proteins, however, can be released by digesting the surface barrier with an enzyme such as pepsin. Taken together, the capsules hold great potential for applications in controlled release, in particular, for the delivery of protein drugs.
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Isoenergetic diets differing in their n‐3 fatty acid and polyphenol content reflect different plasma and HDL‐fraction lipidomic profiles in subjects at high cardiovascular risk
Authors: Bondia‐Pons Isabel , Pöhö Päivi , Bozzetto Lutgarda , Vetrani Claudia , Patti Lidia , Aura Anna‐Marja , Annuzzi Giovanni , Hyötyläinen Tuulia , Rivellese Angela Albarosa , Orešič Matej 
Published: June 2014

ScopeDysregulation of lipid homeostasis is related to multiple major healthcare problems. The aim of this study was to investigate the effects of n‐3 fatty acid (FA) and polyphenol rich diets on plasma and HDL fraction lipidomic profiles in subjects at high cardiovascular risk.Methods and resultsUltra performance LC coupled to quadrupole TOF/MS mass spectrometry global lipidomic profiling was applied to plasma and HDL fraction from an 8 wk randomized intervention with four isoenergetic diets, differing in their natural n‐3 FA and polyphenols content, in 78 subjects with a high BMI, abdominal obesity, and at least one other feature of the metabolic syndrome. Dependency network analysis showed a different pattern of associations between lipidomics, dietary, and clinical variables after the dietary interventions. The most remarkable associations between variables were observed after the diet high in n‐3 FA and polyphenols, as the inverse association between gallic acid intake and LDL cholesterol levels, which was indirectly associated with a HDL cluster exclusively comprised lysophospholipids.ConclusionThis is the first human randomized controlled trial showing direct and indirect associations with lipid molecular species and clinical variables of interest in the evaluation of the metabolic syndrome after diets naturally rich in polyphenols.
Planar high gain antenna for 42.0 GHz Q‐LINK PAN system
Authors: Hao Zhang‐Cheng , He Muxin , Liu Xiaoming 
Published: June 2014

ABSTRACTA high gain planar array antenna is reported in this article for recently proposed 42 GHz Q‐LINK PAN wireless communication system. The substrate integrated waveguide (SIW) technique is deployed for the antenna array. Three types of power divider are used in the design to achieve a 30‐dB Taylor aperture distribution. Longitudinal slots etched on the broad surface of SIW are studied with an equivalent circuit. A high gain prototype which used 16 × 16 slots is designed with a center operation frequency of 42.5 GHz. For the measurement, a traditional rectangular waveguide to SIW transition is designed to feed the prototype. The low‐cost printed‐circuit‐board technology is used to fabricate the designed prototype, and the antenna is measured in a millimeter‐wave anechoic chamber. The measurement results show that the prototype can be operated from 41.5 to 43.7 GHz with a return loss larger than 10 dB. It has a maxim gain of 27.0 dB at 42.3 GHz. Low sidelobes of 26.3 and 17.3 dB are obtained for 42.5 GHz E‐plane and H‐plane radiation patters, respectively. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:2098–2103, 2014
Accurate impedance calculations for transmission lines with adjustable inner conductor
Authors: Safonova Galyna , Vinogradova Elena , Tuchkin Yury 
Published: June 2014

ABSTRACTThe mathematically rigorous solution of the two‐dimensional Laplace equation for the multiple‐body systems is applied for accurate impedance calculations of transmission lines of arbitrary cross‐sections. The developed algorithm allows fast and accurate computations of impedance values for various positions of the inner conductor in the infinitely long transmission line. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:2066–2070, 2014
A highly tunable microwave oscillator based on MTJ STO technology
Authors: Chen T. , Dürrenfeld P. , Rodriguez S. , Åkerman J. , Rusu A. 
Published: June 2014

ABSTRACTThis article presents a fully ESD‐protected, highly tunable microwave oscillator based on magnetic tunnel junction (MTJ) spin torque oscillator (STO) technology. The oscillator consists of a compact MTJ STO and a 65 nm CMOS wideband amplifier, which amplifies the RF signal of the MTJ STO to a level that can be used to drive a PLL. The (MTJ STO + amplifier IC) pair shows a measured quality factor (Q) of 170 and a wide tunability range from 3 to 7 GHz, which demonstrate its potential to be used as a microwave oscillator in multiband, multistandard radios. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:2092–2095, 2014
All‐optical packet buffer system based on controllable‐delay recirculating loop
Authors: Choi Junhyuk , Lee Ghang‐Ho , Kim Taekook , Kim Yeongjun , Park Jinwoo 
Published: June 2014

ABSTRACTWe present an all‐optical packet buffer system that enables variable delay of the incoming packets in the optical domain based on the controllable‐delay recirculating loop. It consists of two optical logic gate stages based on cross gain modulation nonlinear effect of semiconductor optical amplifiers to control the amount of delay. Incoming optical packets were either stored in the recirculating loop or routed to the system output by an optical control signal. The validity of the system has been experimentally verified using the optical bit sequences operating at 1 Gbps. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:2058–2061, 2014
Triple band rectangular‐shaped monopole antenna for WLAN/WiMAX/UWB applications
Authors: Parkash Davinder , Khanna Rajesh 
Published: June 2014

ABSTRACTIn this research, a microstrip‐fed triple‐band antenna is presented which is suitable for heterogeneous wireless communication systems. The radiating element of the proposed antenna consists of rectangular‐shaped ring antenna embedded with three vertical rectangular‐shaped strips. The proposed antenna is capable of generating triple widebands with three resonant modes having good impedance matching. Prototype of the proposed antenna has been designed, fabricated and tested on FR4 substrate. The overall size of the antenna is 24.85 × 27.39 × 1.6 mm3 with volumetric size of 1.1 cm3. The parametric studies are being performed to understand the effects of rectangular‐shaped arm lengths L1, L2, and L3 and gap between patch and ground plane and basic T, L, U and rectangular‐shaped ring on proposed antenna. The measured results show good agreement with the simulated results. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:2113–2117, 2014
A fully integrated dual‐band LNA with switched loads
Authors: García‐Vázquez Hugo , Khemchandani Sunil L. , Ramos‐Valido Dailos , del Pino Javier 
Published: June 2014

ABSTRACTA fully integrated dual‐band low noise amplifier (LNA) is presented. The proposed circuit combines a wideband input impedance matching with switched resonant circuits' loads at the output. As the tuning mechanism is placed at the output of the LNA and no input reconfiguration is needed, the noise contribution is minimized. Experimental results from a test chip prototype in BiCMOS 0.35‐µm technology are shown that validate the proposed circuit. The designed two‐band amplifier provides a gain of 13 and 11 dB at 1.8 and 2.4 GHz, respectively, with a noise figure of 3.8 and 4.1 dB while drawing 16 mW from a 3.3‐V supply. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:2107–2110, 2014
Design of dual notch band UWB printed monopole antenna using electromagnetic‐bandgap structure
Authors: Mandal Tapan , Das Santanu 
Published: June 2014

ABSTRACTIn this letter, a printed hexagonal monopole antenna with dual band rejection is presented. The dual band rejection is achieved by electromagnetic band gap (EBG) structures. An equivalent‐circuit model is adopted to investigate the stop band characteristics of the EBG. The detailed parametric study of the antenna is presented and discussed. The input impedance and surface current distributions are used to analyze the effects of these EBG. The prototype and proposed antennas are fabricated and tested. The impedance, radiation characteristics, and gain are presented and discussed. From the measured results, the proposed antenna operates over 3.11–10.6 GHz range, for 2 ≤ VSWR, while the dual band stop function is in the frequency bands of 3.3–3.8 and 5.13–5.88 GHz. The proposed ultrawideband antenna also exhibits constant group delay and linear phase in the pass band. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:2195–2199, 2014
Compact wideband LTCC bandpass filter exploiting eighth‐mode SIW loaded with CSRR
Authors: Chengtian Song , Yabo Duan , Xiangjun Zhang , Yanming Zhang , Yong Zhang 
Published: June 2014

ABSTRACTA compact eighth‐mode substrate integrated waveguide (EMSIW) LTCC filter is proposed, its electrical size is reduced by a complementary split‐ring resonator loaded on the EMSIW. The filter is fabricated on multilayer ceramic, which, make the filter further compact. The filter was fabricated and measured. Results show the filter operating at 12.7 GHz with about 20.4% bandwidth. The measured minimum insertion is 1.3 dB, with an attenuation level of more than 25 dB from 4 to 10.0 GHz. The volume of filter is only 5.0 × 5.0 × 0.6 mm3. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:2164–2165, 2014
Wideband microstrip patch antenna using ENZ metamaterials
Authors: Jafargholi Amir , Akbarzadeh Seyed Abbas , Mazaheri Mohamad Hossein 
Published: June 2014

ABSTRACTIn this letter, the use of epsilon‐near‐zero (ENZ) to load a microstrip patch antenna has been investigated. It is known that ENZ material may help improving the transmission through a boundary condition and that the scattering parameters may be completely independent of such boundary properties. This idea has been demonstrated to significantly increase the bandwidth of a rectangular microstrip patch antenna. To realize the ENZ medium, a periodic wire media has been designed, simulated, fabricated and tested. Simulation results show good agreement with measurements. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:2080–2084, 2014
Compact filtering power divider with good frequency selectivity and wide stopband based on composite right‐/left‐handed transmission lines
Authors: Ren Xue , Song Kaijun , Hu Bingkun , Chen Qike 
Published: June 2014

ABSTRACTA novel compact power divider with good frequency response and wide stopband based on composite right‐/left‐handed (CRLH) transmission line is presented in this article. To provide bandpass‐filtering frequency response, the bandpass filtering circuits is applied to this power divider using the CRLH resonators. The bandpass filtering circuit can generate two transmission zeros at the lower and upper stopband and have a wide upper stopband. Besides, the phase shift of the CRLH filter is tuned to be 90° for the sake of replacing the conventional quarter‐wave length branch line in the power divider. Moreover, the capacitive coupling between the input and output of the resonator is used simultaneously to generate three additional transmission zeros beside the passband edges. Then, the frequency selectivity of the power divider is greatly improved. A resistor is placed at the center of the symmetric plane to produce good isolation between the two outputs. A filter‐integrated power divider operating at 3.7 GHz is implemented. Good agreement between the simulated and measured results is observed. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:2122–2125, 2014
Reconfigurable PIFA/loop antenna for mobile handset applications
Authors: Lee Da‐Ae , Sung Youngje 
Published: June 2014

ABSTRACTIn this article, a reconfigurable antenna that uses a PIN diode is proposed and experimentally investigated. The proposed antenna operates in planar inverted‐F antenna (PIFA) and loop modes, which are controlled by the on/off operation of a PIN diode inserted into the radiating element. A supplementary stub line generates the additional resonance required to cover the GSM 850/900 bands. Geometrically, the proposed antenna is designed with a folded pattern for reducing its size and occupies an area of 7 × 50 × 4.8 mm3. The antenna operates in the hepta‐band containing GSM850, GSM900, DCS, PCS, UMTS, LTE2300, and LTE2500, with a return loss lower than 6 dB. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:2034–2037, 2014
A low power and low in‐band phase noise W‐band frequency synthesizer in 65 nm CMOS
Authors: Yixiao Wang , Le Ye , Congyin Shi , Huailin Liao , Ru Huang , Yangyuan Wang 
Published: June 2014

ABSTRACTA fully integrated 79 to 87 GHz frequency synthesizer is proposed, which combines a W‐band push–push ×4 frequency multiplier and a K‐band divider‐less phase locked loop (PLL) with sampling phase detector. The circuit is verified in a standard 65 nm CMOS process. The frequency synthesizer consumes 54 mW totally, and the measured phase noise of divide‐by‐2 frequency is −100.1 and −106.2 dBc/Hz at 100 kHz and 1 MHz offset, respectively. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:2014–2018, 2014
Miniaturized and wideband lumped LTCC branch‐line coupler for dozens of megahertz applications
Authors: Zhou Bo , Sheng Weixing , Zheng Yiyuan 
Published: June 2014

ABSTRACTA miniaturized and wideband lumped‐element branch‐line coupler is proposed in a 10‐layer low‐temperature co‐fired ceramic (LTCC) substrate for dozens of megahertz applications. The proposed topology not only enables a wide fractional bandwidth of 32.3% with a small number of elements but also makes the required capacitance and inductance lower for element size reduction. The further miniature is achieved using vertically interdigital‐capacitors with eight fingers and spiral inductors with 9.5 turns. The proposed coupler has the smallest reported size of only 0.005 × 0.004 × 0.0004 λg. Measured S11, S21, S31, and S41 are better than −15, −4.6, −3.9, and −13 dB from 52 to 72 MHz, respectively. And inband phase difference between the coupled and direct ports is within 91° ± 1°. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:2001–2005, 2014