bluuebunny/crossref_metadata_2025_split huggingface dataset:
Chromatographic determination of biogenic amines in wines after treatment with ionic liquids as novel media
Authors: Jiang Hai‐Liang , Ying Li‐Yan , Zhou Sai‐Chun , Ying Min , Shen Wei , Qiu Dong‐He 
Published: March 2011

AbstractRoom temperature ionic liquids (RTIL), 1‐butyl‐3‐methylimidazolium hexafluorophosphate ([C4MIM][PF6]), were used as the novel media for derivatization, extraction and preconcentration of biogenic amines (BAs) in wines. Six BAs, tryptamine (Try), phenylethylamine (Phe), putrescine (Put), cadaverine (Cad), tyramine (Tyr) and spermine (Spe) were selected as the model compounds and dansyl chloride (Dns‐Cl) as the derivatizing reagent. The derivatizations of amines were conducted in water‐IL two‐phase system, in which the partition property of related substance in the IL was investigated and the mechanism (http://www.iciba.com/mechanism/) of derivation and extraction of amines was discussed. The influencing factors, including sample volume, derivatizing reagent concentration, pH value and ultrasound reaction time, were optimized. The Dns‐amines were separated by high‐performance liquid chromatography (HPLC), and detected with UVD at 254 nm. For each of the tested amines, a good linearity was obtained in the concentration range of 0.1–20 mg/L with the correlation coefficient (R) of 0.9814–0.9930. The limits of detection reached μg/L level and the relative standard deviations (RSD, n=3) were between 3.2 and 8.1%. Satisfactory recovery for each BA was obtained, ranging from 82.3 to 114.0%. The developed method was successfully applied to determine six BAs in red wines and Chinese yellow wine.
Predictors of rape: Findings from the National Survey of Adolescents
Authors: Elwood Lisa S. , Smith Daniel W. , Resnick Heidi S. , Gudmundsdottir Berglind , Amstadter Ananda B. , Hanson Rochelle F. , Saunders Benjamin E. , Kilpatrick Dean G. 
Published: March 2011

AbstractThe current report examines data for 872 female adolescents obtained during the initial and follow‐up interviews of the National Survey of Adolescents, a nationally representative sample. Lifetime prevalence of violence exposure reported was 12% and 13% for sexual assault, 19% and 10% for physical assault/punishment, and 33% and 26% for witnessing violence at Waves I and II, respectively. Racial/ethnic status, posttraumatic stress disorder (PTSD), childhood sexual abuse (CSA), and family drug problems emerged as significant predictors of new rape. Each of the PTSD symptom clusters significantly predicted new rape and analyses supported the mediational role of PTSD between CSA and new rape. African American or other racial identity was associated with lower risk.
High spatial resolution interpolation of monthly temperatures of Sardinia
Authors: Boi P. , Fiori M. , Canu S. 
Published: March 2011

AbstractInterpolation of monthly averages of maximum and minimum temperatures for 1 year data on a 250 m grid by multilinear regression his presented here. The principal aim is to find a suitable parameter for interpolation of minimum temperatures in cases of nocturnal inversion. For this purpose a geostatistical parameter has been calculated and tested. It is related to the height relative to the nearest valley. The second aim is to find how the regression equation depends on the sea distance, if in a linear or non linear form and, if nonlinear, what is the best exponent. The procedure has been tested on a 1 year data set from 60 meteorological stations on Sardinia Island. The selection of parameters has been made by the forward selection method. The interpolation errors (RMSE) on independent stations (i.e. not used to calculate the regression coefficient) have been calculated by the cross‐validation method using a developmental data set of size n − 1. The parameter that contains most of the variance is the height: the second one, for minimum temperatures, is the relative height. For maximum temperatures the second parameter is the sea distance, but only in summer months. The RMSE on the independent data ranges from 1.0 to 1.5 °C for minimum temperatures and from 0.5 °C (winter months) to 1.4 °C (summer months) for maximum temperatures. The effect of relative elevation in the regression is a 15% increase of the coefficient of determination. At the same time it lowers the RMSE significantly. Copyright © 2011 Royal Meteorological Society
Novel ultrawideband monopole antenna with miniaturized size
Authors: Jiang Wen , Gong Qi , Gong Shu‐xi , Hong Tao , Qiao Zhi‐zhuang 
Published: March 2011

AbstractA novel ultrawideband monopole antenna with miniaturized size is proposed in this letter.The miniaturized antenna is obtained by splitting the symmetrical structure of a reference antenna. A 41.2% reduction in size can be realized. Its UWB‐related characteristics are simulated, experimentally verified and compared with the reference antenna. The results show that the proposed antenna has as good radiation performance as the reference antenna. © 2011 Wiley Periodicals, Inc. Microwave Opt Technol Lett 53:1176–1178, 2011; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.25893
A simple FBG sensor for strain–temperature discrimination
Authors: Reddy Parne Saidi , Sai Prasad R.L. N. , Sen Gupta D. , Sai Shankar M. , Srimannarayana K. , Tiwari Umesh , Mishra Vandana 
Published: March 2011

AbstractA simple sensor using half the length of a 3‐cm fiber Bragg grating embedded on a cantilever is proposed for the simultaneous measurement and discrimination of strain and temperature. The response of the sensor is linear from 30 to 200°C, and its strain and temperature sensitivities are found to be 3.38 pm/μm 19.05 pm/°C, respectively. © 2011 Wiley Periodicals, Inc. Microwave Opt Technol Lett 53:1021–1024, 2011; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.25901
A CMOS QPSK demodulator frontend for a PON ONU
Authors: Chen Fei , Bespalko Ryan , Frank Brian M. 
Published: March 2011

AbstractA quadrature phase‐shift keying (QPSK) demodulator frontend for a passive optical network (PON) optical network unit receiver fabricated in CMOS 0.13‐μm technology is presented. The frontend integrates a compact 5‐GHz ring quadrature voltage‐controlled oscillator (QVCO), two inductor‐less broadband mixers, and two second‐order LC ladder low‐pass filters. The broadband mixers operate with an input frequency between 2.5 and 7.5 GHz and with an input 1‐dB compression point of −5 dBm. Area‐saving design techniques are applied to lower the cost of the terminal receivers, because a competitive cost is a key requirement for the deployment of the PON access network. The frontend circuit presented achieves an area savings of more than 90% for the QVCO and mixers when compared with some published designs that can also fit the application. Measurement and simulation results are presented to verify that this frontend can be used to demodulate a QPSK signal with a data rate as high as 5 Gb/s, which is twice the downstream data rate of the current Gigabit PON standard. © 2011 Wiley Periodicals, Inc. Microwave Opt Technol Lett 53:1056–1062, 2011; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.25902
A high‐isolation switch based on a standard GaAs process
Authors: Zhurbenko Vitaliy 
Published: March 2011

AbstractThe design and evaluation of an ultra‐wideband nonreflective single port single throw switch integrated circuit is described. The switch has a measured insertion loss of <1.2 dB and isolation of typically better than 70 dB from DC to 10 GHz. The developed circuit is intended for implementation in ultra‐wideband microwave instruments and systems requiring high level of isolation. © 2011 Wiley Periodicals, Inc. Microwave Opt Technol Lett 53:984–987, 2011; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.25906
Printed, integrable, dipole‐slot diversity‐antenna system for compact, 5 GHz WLAN access point
Authors: Su Saou‐Wen , Lee Cheng‐Tse 
Published: March 2011

AbstractA printed, diversity‐antenna system embedded inside a compact, 5 GHz wireless local area network (WLAN) access point (AP) and integrated with the system printed circuit board (PCB) thereof is proposed. The antenna system comprises two closely packed antennas: one dipole and one open slot, which form into a hybrid of dipole and slot antennas. The antennas occupy a small size of 12.5 × 27 mm2 and are etched on an inexpensive FR4 antenna substrate, which is situated above the AP system PCB by an air separation of distance 6.4 mm. In this case, the design makes use of the ground plane of the system PCB as an efficient reflector for both antennas and integrates the system PCB into an internal multiantenna solution for wireless AP applications. The dipole and the slot antennas were also positioned in such a way that the radiation with polarization diversity can be realized. The results showed that good input matching with a reflection coefficient of −14 dB over the 5 GHz bands was obtained. High‐gain and directional radiation patterns were also observed. © 2011 Wiley Periodicals, Inc. Microwave Opt Technol Lett 53:1087–1094, 2011; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.25911
An ultra‐wideband fractal slot antenna with low backscattering cross section
Authors: Xu Hai‐Yang , Zhang Hou , Li Gui‐Yuan , Xu Qi‐Bo , Lu Ke 
Published: March 2011

AbstractIn this article, an ultra‐wide modified Koch fractal antenna is proposed.Simulated and measured results show that the bandwidth of −10 dB return loss is from 2.7 GHz to more than 15 GHz. The radiation patterns are comparatively symmetrical at both 3 and 8 GHz. Moreover, this novel antenna has low backscattering cross section compared with the initial square slot antenna. The backscattering cross section values of the two antennas with different load are also presented to make the achievement of the RCS values with arbitrary load possible. © 2011 Wiley Periodicals, Inc. Microwave Opt Technol Lett 53:1150–1154, 2011; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.25915
Time domain design for ultra wideband filters
Authors: Duroc Yvan , Kharrat Ines , Kaddour Darine 
Published: March 2011

AbstractIn this article, a time domain method for designing microstrip‐line ultra wideband passband filters is presented.From the filter expected specifications, the profile of the nonuniform transmission line is calculated analytically. The filter presented in this article illustrates the proposed method and emphasizes its potential. © 2011 Wiley Periodicals, Inc. Microwave Opt Technol Lett 53:1006–1011, 2011; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.25921
Design of CPW‐FEED inscribed square circular fractal antenna for UWB applications
Authors: Kumar Raj , Sawant K. K. 
Published: March 2011

AbstractIn this article, a novel inscribed square circular shape fractal antenna is proposed for UWB applications. The proposed antenna has been designed on FR4 substrate εr = 4.3, h = 1.53 mm with the diameter 18.4 mm. The CPW‐feed technique and the fractal concept have been used to achieve the ultra‐wideband impedance matching and compact size. The experimental result of proposed fractal antenna exhibits the ultra‐wideband characteristics from 3.01 to 15.0 GHz at VSWR 2:1 corresponds to 133.149% impedance bandwidth. The proposed antenna has also been studied experimentally with respect to each iteration. The measured radiation pattern of fractal antenna is nearly omnidirectional in azimuth plane and dumble shape in elevation plane. This antenna is useful for UWB communication System. © 2011 Wiley Periodicals, Inc. Microwave Opt Technol Lett 53:1079–1083, 2011; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.25926
Rectangular slot antenna design with two L‐shaped slits for WLAN/WiMAX applications
Authors: Sim Chow‐Yen‐Desmond , Cai Fu‐Ren 
Published: March 2011

AbstractA novel coplanar rectangular slot antenna with dual band operation is proposed.By loading two dissimilar inverted L‐shaped slit into the rectangular radiating element, broad impedance bandwidth at both lower and upper operating bands are achieved to allow the operation for 2.4/5.2/5.8 GHz wireless local area network and 2.6/3.5/5.5 GHz worldwide interoperability for microwave access bands. The design evolution of this proposed antenna by simulation is clearly demonstrated, and a prototype was fabricated and experimentally investigated. © 2011 Wiley Periodicals, Inc. Microwave Opt Technol Lett 53:987–991, 2011; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.25936
Single‐layer crossed dipole antenna with circular polarization for handheld RFID reader
Authors: Chen Hua‐Ming , Wang Yang‐Kai , Lin Yi‐Fang , Yang Zhong‐Zhe 
Published: March 2011

AbstractA compact circularly polarized coplanar crossed dipole antenna with an unequal length of arms for RFID reader is designed and measured in this paper. It uses two unequal length dipoles connected in parallel to a coaxial cable feed and requires no matching network. The impedance bandwidth of the proposed antenna for S11 <10 dB is about 6.9% and it has a 3‐dB CP bandwidth of about 1.0%. Experimental results and simulations reveal that the proposed antenna features total size of 0.15 λ0 in side of square substrate and 0.005 λ0 in height at the center frequency 924 MHz. In addition to this, the compact antenna is easily to be embedded in the holding box as transmitting antenna in handheld RFID reader. © 2011 Wiley Periodicals, Inc. Microwave Opt Technol Lett 53:1172–1176, 2011; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.25937
High‐gain reconfigurable LNA using optimized Q‐factor inductor and switched capacitor
Authors: Chang Ho‐Jun , Park Kun‐Man , Ham Jung‐Hyun , Yun Tae‐Yeoul 
Published: March 2011

AbstractThis letter presents a band‐selectable LNA with high gain and low noise in 0.25‐μm RF CMOS technology.The proposed reconfigurable LNA uses two techniques: optimized spiral inductors and a switched capacitor technique. The gain and noise figure of the LNA are improved by using Q‐factor optimized inductors, which are designed with an octagonal shape having a peak Q‐factor at desired frequency bands. The high Q‐factor of the switched capacitor in parallel configuration at the load also increases the gain of the band‐selectable LNA. © 2011 Wiley Periodicals, Inc. Microwave Opt Technol Lett 53:1069–1074, 2011; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.25945
Bidirectional visible light wireless transmission supported by reflective semiconductor optical amplifier based optical access network
Authors: Son Yong‐Hwan , Kim Hyun‐Seung , Won Yong‐Yuk , Han Sang‐Kook 
Published: March 2011

AbstractWe propose the visible light communication (VLC) system based on optical access network using white light emitting diode (LED) and reflective semiconductor optical amplifier (RSOA). The RSOA is employed as an optical network unit (ONU) in order to be connected with VLC link based on white LED and photo diode (PD). The proposed architecture is demonstrated experimentally and its performance is verified through the experimental investigation of quality‐factor (Q‐factor) and eye pattern up to 20 Mb/s data. The variation of performance is shown depending on both the existence of the ambient light and the distance between the LED and PD. A 20 Mb/s downlink and uplink transmission is demonstrated in 23‐km single mode fiber (SMF) and 100 cm long wireless channel experimentally. © 2011 Wiley Periodicals, Inc. Microwave Opt Technol Lett 53:1032–1036, 2011; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.25946
Improvement on reflectivity of chemical composition gratings at high temperatures
Authors: Li Guoyu , Guan Bai‐ou 
Published: March 2011

AbstractThe development of the chemical composition gratings (CCGs) is described, and the influencing factors on reflectivity of CCGs in hydrogen‐loaded germanosilicate fibers have been studied.Experimental results show that improving the initial fiber Bragg grating (FBG) strength and enhancing the hydrogen concentration in FBGs inscription help to improve the reflectivity of the CCGs, and using different laser pulse energy of fabricating the FBGs has little effect on the reflectivity of CCGs. Finally the reasons of improving the reflectivity of CCGs are also discussed. © 2011 Wiley Periodicals, Inc. Microwave Opt Technol Lett 53:963–966, 2011; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.25953
Current Disease‐Modifying Treatment of Multiple Sclerosis
Authors: Derwenskus Joy 
Published: March 2011

AbstractThe treatment era for multiple sclerosis began in 1993 with the approval of the first disease‐modifying therapy. This changed the management of multiple sclerosis from treating acute exacerbations to focusing on preventive therapeutic options that lessen the risk for exacerbations, changes on magnetic resonance imaging, and disability as measured by the Expanded Disability Status Scale. Currently, there are 8 therapies approved to treat multiple sclerosis: beta‐interferons (Avonex, Betaseron, Extavia, and Rebif), fingolimod (Gilenya), glatiramer acetate (Copaxone), mitoxantrone (Novantrone), and natalizumab (Tysabri). These agents will be reviewed including the pivotal trial data, mechanisms of action, and side effects. The timing of beginning therapy and selection of these agents must be individualized for each patient depending upon patient preference, tolerability, clinical and magnetic resonance imaging disease activity, and disease course. All of the current treatments are approved for relapsing disease. To date only the injectable agents, including interferons and glatiramer acetate, have been shown to be of benefit when started after an initial demyelinating event referred to as clinically isolated syndrome. Mitoxantrone was approved for progressive relapsing and secondary progressive multiple sclerosis, although its use is limited by potential risks such as cardiotoxicity and leukemia. Although these agents have made a significant impact on the treatment of multiple sclerosis, they are often only partially effective, so patients may continue to have disease activity. Multiple new agents are currently being tested in clinical trials and it is likely our treatment paradigms will change as more effective therapies become available. Mt Sinai J Med 78:161–175, 2011 © 2011 Mount Sinai School of Medicine
Cystic Mandibular Lesion in the Antiquity. A Rare Finding
Authors: Carrascal S. , Chimenos‐Küstner E. , Isidro A. , Malgosa A. 
Published: March 2011

ABSTRACTAmeloblastoma is a not uncommon tumour reported in the clinical literature and is characterised by a multilocular cavity with ‘soap bubble’ pattern usually in the posterior body of the mandible. A review of the palaeopathology literature did not reveal any examples of ameloblastoma. In this paper, a probable case of ameloblastoma in a male skeleton, 45 – 55 years at age of death, from Casserres, Barcelona, Spain, (ca ad V‐IX centuries) is presented. This case was identified during the anthropological study of the remains in the laboratory of biological anthropology in the Universitat Autònoma de Barcelona. The mandible of this individual (AEC'07‐C2‐139) exhibits unusual features, like cavitated lesions in the posterior side of the right gonion and the expansion of the right ramus of the mandible. All these features are consistent with ameloblastoma. Copyright © 2011 John Wiley & Sons, Ltd.
High dose methotrexate treatment in children with acute lymphoblastic leukaemia may be optimised by a weight‐based dose calculation
Authors: Jönsson Peter , Skärby Tor , Heldrup Jesper , Schrøder Henrik , Höglund Peter 
Published: March 2011

AbstractBackgroundThe inter‐individual variation in exposure to methotrexate is considerable after intravenous high dose methotrexate (HDMTX) administration and both under‐ and over exposures may have dire consequences. Thus, optimal dose individualisation is of paramount importance.ProcedureWe studied how pharmacokinetic parameters were related to outcome in 340 patients with acute lymphoblastic leukaemia (ALL). A population pharmacokinetic model was developed with data from 1284 HDMTX courses in 304 children evaluating age, height, weight, body surface area (BSA), sex, serum creatinine and serum alanine aminotransferase as potential covariates.ResultBody weight improved the population pharmacokinetic model significantly more than any of the other patient characteristics, indicating that body weight may be the better way of dose normalisation. In a logistic regression analysis, higher values of clearance as well as volume of distribution were related to increased relapse risk in the standard (SR) and intermediate risk (IR) groups as well as in the entire cohort. A higher weight was strongly associated with worse outcome in the SR and IR groups, (P = 0.0186 and 0.0121, respectively).ConclusionsWe conclude that dose normalisation of methotrexate according to body weigh may give more predictable pharmacokinetics of methotrexate and may also improve the outcome for children with ALL. Pediatr Blood Cancer 2011;57:41–46. © 2011 Wiley‐Liss, Inc.
Four novel ELANE mutations in patients with congenital neutropenia
Authors: Kurnikova Maria , Maschan Michael , Dinova Evgeniya , Shagina Irina , Finogenova Natalia , Mamedova Elena , Polovtseva Tatyana , Shagin Dmitry , Shcherbina Anna 
Published: March 2011

AbstractCongenital neutropenia is a heterogeneous bone marrow failure syndrome characterized by a maturation arrest of myelopoesis at the promyelocyte/myelocyte stage. Cyclic neutropenia (CyN) and severe congenital neutropenia (SCN) are two main forms of congenital neutropenia. Genetic analysis has shown that heterozygous mutations in the ELANE gene encoding the neutrophil elastase are the major cause of these disorders. We investigated the prevalence of ELANE mutations in a group of 16 patients from 14 families with congenital neutropenia. Five patients had typical manifestations of CyN, and 11 patients had SCN. Seven different heterozygous ELANE mutations were found, including four novel mutations. Pediatr Blood Cancer 2011; 57: 332–335. © 2011 Wiley‐Liss, Inc.
Impact of psychiatric diagnoses on hospital length of stay in children with sickle cell anemia
Authors: Myrvik Matthew P. , Campbell Andrew D. , Davis Matthew M. , Butcher Jennifer L. 
Published: March 2011

AbstractBackgroundPatients with sickle cell anemia (SCA) experience a broad range of psychiatric disorders, placing them at risk for more complicated and longer hospitalizations for vaso‐occlusive crises (VOC). The current study examined the frequency of psychiatric disorders in SCA patients (ages birth to 20 years) admitted for VOC in a nationally representative sample and the association between psychiatric disorders and hospital length of stay (LOS).ProcedurePatients with a primary diagnosis of SCA with crisis identified through the nationally representative Kids' Inpatient Database (KID) 2006 from the Agency of Healthcare Research and Quality were included for analysis. Patients with psychiatric disorders listed as secondary diagnoses were categorized under specific psychiatric disorders (mood disorder, anxiety disorder, disruptive behavior disorder, substance use disorder). Non‐parametric and regression analyses were utilized for nationally weighted data, to determine the effect of psychiatric disorders on LOS, while controlling for significant covariates.ResultsFor 21,255 hospital discharges for children with SCA with crisis in 2006, the mean LOS was 4.51 days. Approximately 6% of the patients discharged had a psychiatric disorder. After adjusting for significant covariates, mood disorders, anxiety disorders, and any psychiatric disorder were each associated with significantly longer LOS (P < 0.01). Substance and disruptive behavior disorders were not associated with LOS.ConclusionsPediatric patients diagnosed with a psychiatric disorder, specifically mood or anxiety disorders, have longer LOS for VOC. These findings suggest that future interventions aimed at managing VOC may need to consider adjunctive psychiatric assessment and intervention. Pediatr Blood Cancer 2012; 58: 239–243. © 2011 Wiley Periodicals, Inc.