bluuebunny/crossref_metadata_2025_split huggingface dataset:
The Effect of Wait Times on Oncological Outcomes From Periampullary Adenocarcinomas
Authors: McLEAN SPENCER R. , KARSANJI DIVYA , WILSON JENNIFER , DIXON ELIJAH , SUTHERLAND FRANCIS R. , PASIEKA JANICE , BALL CHAD , BATHE OLIVER F. 
Published: April 2013

AbstractBackground:Overall few patients presenting with periampullary adenocarcinomas have resectable lesions. We postulated that rapid diagnosis and treatment would enhance the likelihood of successful resection, improving survival.Methods:A retrospective analysis of patients undergoing surgery for resection of a pancreatic or periampullary lesion was conducted. Resection rate, disease stage and survival were evaluated as a function of wait times.Results:Pancreatic resections were booked in 355 patients. Of 193 patients with periampullary adenocarcinomas, 119 patients (61.7%) had resectable disease. There was no difference in median time from initial physician consultation to surgery in patients with resectable and unresectable disease (61 days vs. 64 days, respectively). The likelihood of successful resection was virtually identical in patients with wait times ≤30 and >30 days (from surgical consultation to procedure). There was a trend toward a higher T‐stage in patients who waited >30 days for surgery (P = 0.055). However, there was no difference in survival as a function of wait time.Conclusions:This series does not demonstrate an advantage for rapid diagnosis and surgery, in terms of resection rate and survival. However, further study is required in a larger cohort of patients, to confirm these findings. J. Surg. Oncol. 2013;107:853–858. © 2013 Wiley Periodicals, Inc.
A Randomized Controlled Trial to Optimize Indocyanine Green‐Augmented Diode Laser Therapy of Capillary Malformations
Authors: Klein Annette , Bäumler Wolfgang , Buschmann Marius , Landthaler Michael , Babilas Philipp 
Published: April 2013

AbstractBackgroundIndocyanine green (ICG)‐augmented diode laser therapy (ICG + DL) represents a new treatment modality for capillary malformations (CM). However, an increase of the ICG‐concentration or the use of an intense pulsed light (IPL) device as light source may further optimize treatment outcomes in CM.Objective: This proof‐of‐concept trial including 15 patients (skin type II to III) with CM evaluated the efficacy and safety of ICG‐augmented diode laser therapy (808 nm) at a total dose of 4 mg/kg body weight (b.w.). Additionally, five patients with extensive CM received IPL therapy before and after ICG‐administration (ICG + IPL).MethodsICG was intravenously administered to 15 patients with CM at a total dose of 4 mg/kg b.w. Immediately after ICG injection, diode laser pulses with different radiant exposures (20–110 J/cm2) were applied as one single treatment. Five patients with extensive CM additionally received IPL (555–950 nm) therapy. Safety and efficacy were assessed both 1 and 3 months after the single treatment by a blinded investigator and the patient. Furthermore, color of the CM was objectively measured by means of a color meter (colorStriker™, Eduard Mathai GmbH, Hannover, Germany). Treatment with the flashlamp‐pumped pulsed dye laser (FPDL) and the IPL alone (five patients) served as reference treatment.ResultsAccording to the assessment by the patients and the blinded investigator, the clearance rate was slightly better after ICG + DL therapy than after FPDL treatment (P = 0.1, P = 0.8). In one out of five patients, IPL with and without ICG injection induced poor to moderate clearance of CM and persisting erythema in another patient. The correlation between the visual assessment by the blinded investigator and the colorimetric measurements was poor.ConclusionA minority of patients with CM may benefit from ICG + DL therapy, but efficacy cannot be improved by higher ICG doses. Lasers Surg. Med. 9999:XX–XX, 2013. © 2013 Wiley Periodicals, Inc.
New Thiols for Photoinitiator‐Free Thiol‐Acrylate Polymerization
Authors: Tehfe Mohamad‐Ali , Mondal Shovan , Nechab Malek , Dumur Frédéric , Bertrand Michèle P. , Graff Bernadette , Gigmes Didier , Fouassier Jean‐Pierre , Lalevée Jacques 
Published: April 2013

AbstractNew thiols for efficient thiol‐ene polymerization reactions are presented. They do not exhibit any unpleasant odor, are characterized by quite good light‐absorption properties at λ > 300 nm, and generate thiyl radicals upon UV‐light exposure. Due to these interesting properties and contrary to many previously reported methodologies, the present thiol‐acrylate polymerizations can be efficiently carried out without the presence of any additional photoinitiator. The chemical mechanisms are investigated by steady‐state photolysis and electron spion resonance (ESR) experiments. Important parameters can also be extracted from molecular orbital calculations.
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A low‐power technique to boost the output amplitude of multi gigahertz push‐push LC VCOS
Authors: Molavi Reza , Mirabbasi Shahriar , Djahanshahi Hormoz 
Published: April 2013

AbstractA design technique to increase the output amplitude and hence the output power of push‐push LC‐based voltage‐controlled oscillators (LC VCOs) is presented that relies on LC resonance boosting of the second harmonic. Measurement results are in good agreement with the results predicted from the analysis. Using the proposed technique, a low‐power push‐push LC VCO is designed and implemented in 90‐nm CMOS. Based on the measurement results, the VCO has a frequency tuning range of 23%, from 20.1 to 24.8 GHz. It exhibits up to 8 dB improvement in its output power at the middle of the frequency band compared to a traditional push‐push VCO. © 2013 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:1581–1584, 2013; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.27599
Modeling the package of a LNA with a 3D‐EM simulator
Authors: García‐Vázquez Hugo , Khemchandani Sunil L. , Ramos‐Valido Dailos , Orbaiceta‐Ezcurra Krisnaya , del Pino Javier 
Published: April 2013

AbstractIn this work, the package influence on a feedback low‐noise amplifier has been studied.The electromagnetic simulator of ADS was used to obtain the QFN16 package model and the bonding model. The influence of the package and the pad on the supply node was negligible when it was studied separately. However, the circuit performance is reduced when the inductance introduced by the bonding of the supply node is combined with the parasitic capacities associated to the pad with electrostatic discharge protection. © 2013 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:1435–1440, 2013; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.27601
Design of compact circularly polarized radio frequency identification tag antenna for metallic object application
Authors: Chen Horng‐Dean , Kuo Shang‐Huang , Jheng Jing‐Lun 
Published: April 2013

AbstractA passive UHF band radio frequency identification tag antenna design is presented in this article. To allow compact size and circular polarization (CP) radiation, a radiating square patch is loaded with two pairs of unequal slits, while a quarter‐wave microstrip line connected to a tag chip and terminated by a short‐circuited stub line is used to excite the radiating patch. The 10‐dB impedance bandwidth of the tag antenna is measured to be 31 MHz (896–927 MHz), whereas its 3‐dB CP bandwidth is 6 MHz (911–917 MHz). Further experiment has demonstrated that the proposed tag antenna can provide better reading distance when mounted on a metallic surface as compared with the free‐space condition. © 2013 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:1481–1485, 2013; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.27607
A reactive power sensor based on fiber Bragg grating and a piezo‐electric transducer
Authors: Cheng Chin‐Hsing , Cheng Kuo‐Liang , Liu Wen‐Fung 
Published: April 2013

AbstractThis article develops an optical fiber sensor using a fiber Bragg grating (FBG) and a piezo‐electrical transducer (PZT) to measure reactive power. By mounting an FBG on a PZT bar, a dynamic strain simulator was constructed. The equivalent voltage produced by reactive power applied to the PZT was converted to the dynamic variation of the FBG Bragg wavelength. The reactive power was attained by measuring the changing value of the wavelength. Thus, the sensor can be used to measure reactive power without the use of a traditional power meter. © 2013 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:1692–1696, 2013; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.27617
CPW‐FED UWB antenna with band‐stop properties
Authors: Pouyanfar Negin 
Published: April 2013

AbstractStructurally simple and miniaturized ultra wideband (UWB) printed rectangular antenna fed by a coplanar waveguide (CPW) is proposed.Overall dimension of the antenna is as compact as 12 (0.13λ) × 12 (0.13λ) × 1.6 mm3, where λ is the wavelength of the first resonance of the antenna. The main feature of the proposed antenna is its compact size and controllable structure which lead to four different antenna designs. By adjusting the dimensions of the elements of the antenna, notch frequency in different ranges of the UWB can be obtained. The resulting VSWR < 1.5 impedance bandwidth is as large as 11.6 GHz. The antenna presents a stable gain and omnidirectional radiation pattern in its operational frequencies. © 2013 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:1533–1537, 2013; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.27624
Bandwidth enhancement of an ultra‐wideband printed slot antenna with WLAN band‐notched function
Authors: Ojaroudi Nasser , Ojaroudi Mohammad 
Published: April 2013

AbstractIn this article, a compact ultra‐wideband (UWB) slot antenna with band‐notched performance is presented. To increase the impedance bandwidth of an ordinary slot antenna, we use a pair of S‐shaped slots in the ground plane that with this structure a new resonance at the higher frequencies can be achieved, and a wide usable fractional bandwidth of more than 130% is provided. Additionally, by cutting a rectangular slot with a rotated E‐shaped strip protruded inside the slot in the square radiating stub, a frequency‐notched band performance has been obtained. The designed antenna has a small size of 20 × 20 mm2 while showing the radiation performance in the frequency band of 3.13 to over 14.3 GHz with a band rejection performance in the frequency band of 5–6 GHz. Simulated and experimental results obtained for this antenna show that it exhibits good radiation behavior within the UWB‐frequency range. © 2013 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:1448–1451, 2013; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.27631
Compact multiband printed‐IFA on electromagnetic band‐gap structures ground plane
Authors: Elsheakh Dalia M. , Abdallah Esmat A. 
Published: April 2013

AbstractFourth mobile generation requiring of multistandard operating handsets of small physical size as well as increasing demand for higher data rates.Compact multiband printed inverted‐F antennas (IFA) for available wireless communications are proposed in this article. New design of printed IFA based on uniplanar compact electromagnetic band gap (EBG) concept is proposed. A printed‐IFA with L‐loaded shaped over artificial ground plane is designed as the main antenna to cover the GSM, LTE, UMTS, Bluetooth, and WLAN. The multiband is created by means of an EBG structure that is used as a ground plane. Different shapes of uniplanar EBG as ring, split ring resonator, and spiral rather than mushroom‐like structure are investigated. The proposed antenna is built on the uniplanar EBG ground plane with size of 35 × 45 mm2, which is suitable for most of the mobile devices. © 2013 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:1670–1676, 2013; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.27633
Novel splicing technique for coated optical fiber connection without stripping or cleaning process
Authors: Kihara Mitsuru , Koyama Ryo , Son Hitoshi , Tomita Shigeru 
Published: April 2013

AbstractWe propose a new splicing technique by precisely aligning and directly connecting coated fibers with a capillary. The assembled splice for 1.3‐μm single‐mode fibers with an 80 μm cladding and a 125 μm coating can provide a low insertion loss of 0.2 dB and a high return loss of over 46 dB. © 2013 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:1453–1456, 2013; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.27636
1‐Watt highly linear HBT power amplifier driver integrated circuit with low current consumption
Authors: Joo S. , Han S. , Song M. , Kim H. , Ham J. , Seo M. , Kim M. , Park C. , Yang Y. 
Published: April 2013

AbstractThis article presents a power amplifiers (PA) driver IC which has a parallel combined structure with a dual bias network.Each PA cell for parallel combination has an optimized bias to achieve both lower current consumption and IM3 cancellation at the same time, so that the overall PA driver IC has an improved linearity with a low current consumption. An incomplete Wilkinson divider including an input matching capability was proposed. This was adopted to prevent a stability degradation which can be caused by a parallel combination. The proposed PA driver IC was designed. This was implemented using a 2‐μm InGaP/GaAs heterojunction bipolar transistor (HBT) to have an output power of 1 Watt. The quiescent currents for the upper and lower PA cells were optimized to have the best compromised performances with quiescent current levels of 100 and 150 mA, respectively. By the implemented PA driver IC, a gain of 17.25 dB and a high power‐added efficiency of 54.15% at a P1dB of 31 dBm were achieved at a center frequency of 900 MHz. For a two‐tone signal having a tone‐spacing of 1 MHz, it also exhibited a high output IP3 of 54.28 dBm at an output power level of 20 dBm. The average output power was 22.36 dBm to which the IMD3 level should be lower than −60 dBc. © 2013 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:1680–1683, 2013; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.27639
Performance enhancement of a circularly polarized patch antenna for radio frequency identification readers using an electromagnetic band‐gap ground plane
Authors: Pflaum Sylvain , Thuc Philippe Le , Kossiavas Georges , Staraj Robert 
Published: April 2013

AbstractA miniaturized circularly polarized (CP) patch antenna with wide impedance matching and axial ratio bandwidths and a good efficiency using an electromagnetic band gap (EBG) ground plane is presented. CP is obtained with the truncated corners technique applied on a square patch and size reduction of this radiating element is based on the slow wave phenomenon created in the EBG structure. This antenna is fabricated on a 117 × 117 × 4 mm3 FR‐4 substrate (εT = 4.4 and tan δ = 0.22) and dedicated to the European UHF radio frequency identification band (865–868 MHz). The measured bandwidth, realized gain, and total efficiency are 14.4%, 3.7 dBi, and 79%, respectively. Experimental and theorical results are presented and discussed. © 2013 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:1599–1602, 2013; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.27642
Optimization of a broadband VHF lumped‐element ferrite circulator
Authors: Smith Jacob R. , Dong Hang , Young Jeffrey L. , Aldecoa Brandon 
Published: April 2013

AbstractA multistage optimization procedure is provided to maximize the operating bandwidth of a very high frequency circulator. We show through hardware validation that bandwidths on the order of 52.3–80.9 MHz are achievable using a 15 dB isolation specification. Simulation studies indicate that bandwidths on the order of 100% are possible, but such wideband performance has not been achieved in hardware to date. The optimization procedure uses both genetic algorithms and orthogonal sweep methods to find the best crossover geometry and ferrite properties, but the outcome of both methods is roughly the same. Matching networks are used to tune the response and to widen the operating frequency band. These networks are optimized using Pareto tradeoff charts in the context of power metrics like return loss, isolation, and insertion loss. © 2013 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:1476–1481, 2013; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.27654
Double diffraction and double reflection in NURBS‐UTD method
Authors: Wang Nan , Du XinXin , Wang Yong , Liang ChangHong 
Published: April 2013

AbstractDouble diffraction and double reflection in NURBS‐UTD method are studied in this article. Algorithms being used to trace double reflected rays and double edge diffracted rays are presented. The ray fields carried by these kinds of rays are investigated to discuss the contribution of the double effected ray fields to the total ray fields. Numerical measures are used throughout the whole process and the ray fields are calculated based on single effected ray fields. Two examples are presented and it can be seen from data achieved that double effected ray fields can improve the computational precision according to the relationship between surfaces. Numerical results show the validation and the improvement. © 2013 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:1549–1553, 2013; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.27652
Decoupled WWAN/LTE antennas with an isolation ring strip embedded therebetween for smartphone application
Authors: Wong Kin‐Lu , Lin Po‐Wei , Hsu Hung‐Jen 
Published: April 2013

AbstractAn integrated antenna array comprising two decoupled multiband WWAN/LTE antennas having an isolation ring strip embedded therebetween and all disposed on a same FR4 substrate of small size 10 × 70 mm2 is presented. The two decoupled antennas cover the 824–960/1710–2690 MHz bands for the GSM850/900 and GSM1800/1900/UMTS/LTE2300/2500 operations and are promising to be mounted at the bottom edge of a smartphone for dual wireless wide area network (WWAN) operation for dual‐talk function or for long term evolution (LTE) multiple‐input multiple‐output operation. The measured transmission coefficient S21 between the two antennas is less than −15 dB over both the 824–960 and 1710–2690 MHz bands, and the envelop correlation coefficient is less than about 0.03 over both bands. Port‐decoupling of the two antennas is obtained because the excited surface currents on the system ground plane of the smartphone between the two antennas are decreased owing to the isolation ring strip attracting some of the same. In addition to good isolation obtained, the antenna efficiencies are better than about 40 and 50% over the lower and upper bands, respectively. Details of the decoupled WWAN/LTE antennas are described. © 2013 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:1470–1476, 2013; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.27654
Dual band bandpass filter using coupled and series capacitors with controllable bandwidths
Authors: Lu Yun‐Long , Dai Gao‐Le , Li Kai 
Published: April 2013

AbstractIn this article, a novel compact dual‐band bandpass filter with controllable bandwidths is presented. A set of central‐loaded resonators are employed to generate dual band responses. Three coupled‐capacitors, loaded at the corresponding voltage‐zero points of the resonators, are utilized to control the coupling coefficients of two bands separately. Besides, two extra series capacitors, between feed lines and resonators, are adopted to simultaneously achieve the desired external quality factors of dual passbands. Thus, the bandwidths of the dual bands can be independently controlled. © 2013 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:1543–1546, 2013; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.27665
Design of multishell sampling schemes with uniform coverage in diffusion MRI
Authors: Caruyer Emmanuel , Lenglet Christophe , Sapiro Guillermo , Deriche Rachid 
Published: April 2013

AbstractPurpose:In diffusion MRI, a technique known as diffusion spectrum imaging reconstructs the propagator with a discrete Fourier transform, from a Cartesian sampling of the diffusion signal. Alternatively, it is possible to directly reconstruct the orientation distribution function inq‐ball imaging, providing so‐called high angular resolution diffusion imaging. In between these two techniques, acquisitions on several spheres in q‐space offer an interesting trade‐off between the angular resolution and the radial information gathered in diffusion MRI. A careful design is central in the success of multishell acquisition and reconstruction techniques.Methods:The design of acquisition in multishell is still an open and active field of research, however. In this work, we provide a general method to design multishell acquisition with uniform angular coverage. This method is based on a generalization of electrostatic repulsion to multishell.Results:We evaluate the impact of our method using simulations, on the angular resolution in one and two bundles of fiber configurations. Compared to more commonly used radial sampling, we show that our method improves the angular resolution, as well as fiber crossing discrimination.Discussion:We propose a novel method to design sampling schemes with optimal angular coverage and show the positive impact on angular resolution in diffusion MRI. Magn Reson Med 69:1534–1540, 2013. © 2013 Wiley Periodicals, Inc.
Update on pediatric cancer predisposition syndromes
Authors: Schiffman Joshua D. , Geller James I. , Mundt Erin , Means Anthony , Means Lindsey , Means Von 
Published: April 2013

AbstractHereditary cancer syndromes in children and adolescents are becoming more recognized in the field of pediatric hematology/oncology. A recent workshop held at the American Society of Pediatric Hematology/Oncology (ASPHO) 2012 Annual Meeting included several interactive sessions related to specific familial cancer syndromes, genetic testing and screening, and ethical issues in caring for families with inherited cancer risk. This review highlights the workshop presentations, including a brief background about pediatric cancer predisposition syndromes and the importance of learning about them for the practicing pediatric hematologists/oncologists. This is followed by a brief summary of the newly described cancer predisposition syndromes including Rhabdoid Tumor Predisposition Syndrome, Hereditary Paragangliomas and Pheochromocytoma Syndrome, and Familial Pleuropulmonaryblastoma Tumor Predisposition (DICER1) Syndrome. The next section covers genetic testing and screening for pediatric cancer predisposition syndromes. Ethical issues are also discussed including preimplantation genetic diagnosis or testing (PGD/PGT), suspicious lesions found on tumor screening, and incidental mutations discovered by whole genome sequencing. Finally, the perspective of a family with Li‐Fraumeni Syndrome is shared. Pediatr Blood Cancer 2013;60:1247–1252. © 2013 Wiley Periodicals, Inc.