bluuebunny/crossref_metadata_2025_split huggingface dataset:
KNOWLEDGE MANAGEMENT FOR LAND DEGRADATION MONITORING AND ASSESSMENT: AN ANALYSIS OF CONTEMPORARY THINKING
Authors: Reed M. S. , Fazey I. , Stringer L. C. , Raymond C. M. , Akhtar‐Schuster M. , Begni G. , Bigas H. , Brehm S. , Briggs J. , Bryce R. , Buckmaster S. , Chanda R. , Davies J. , Diez E. , Essahli W. , Evely A. , Geeson N. , Hartmann I. , Holden J. , Hubacek K. , Ioris A. A. R. , Kruger B. , Laureano P. , Phillipson J. , Prell C. , Quinn C. H. , Reeves A. D. , Seely M. , Thomas R. , van der Werff Ten Bosch M. J. , Vergunst P. , Wagner L. 
Published: June 2011

ABSTRACTIt is increasingly recognised that land degradation monitoring and assessment can benefit from incorporating multiple sources of knowledge, using a variety of methods at different scales, including the perspectives of researchers, land managers and other stakeholders. However, the knowledge and methods required to achieve this are often dispersed across individuals and organisations at different levels and locations. Appropriate knowledge management mechanisms are therefore required to more efficiently harness these different sources of knowledge and facilitate their broader dissemination and application. This paper examines what knowledge is, how it is generated and explores how it may be stored, transferred and exchanged between knowledge producers and users before it is applied to monitor and assess land degradation at the local scale. It suggests that knowledge management can also benefit from the development of mechanisms that promote changes in understanding and efficient means of accessing and/or brokering knowledge. Broadly, these processes for knowledge management can (i) help identify and share good practices and build capacity for land degradation monitoring at different scales and in different contexts and (ii) create knowledge networks to share lessons learned and monitoring data among and between different stakeholders, scales and locations. Copyright © 2011 John Wiley & Sons, Ltd.
Synthesis of a Difunctional Orthogonal Coupler for the Preparation of Carbohydrate‐Functionalized sP(EO‐stat‐PO) Hydrogels
Authors: Anders Thorsten , Adamiak Kathrin , Keul Helmut , Elling Lothar , Möller Martin 
Published: June 2011

AbstractThe synthesis and characterization of a new difunctional coupler (4) based on trimethylolpropane (TMP) are described. The coupler is used to connect biologically active N‐acetylglucosamine (GlcNAc) on amino‐reactive microtiter plates and on star‐shaped poly[(ethylene oxide)‐stat‐(propylene oxide)] hydrogel layers in microtiter plates. The biological activity of immobilized carbohydrates is determined using an enzyme‐linked lectin assay.
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Low‐Voltage‐Driven Sustainable Weightlifting Actuator Based on Polymer–Nanotube Composite
Authors: Hu Ying , Wang Guangfeng , Tao Xiaoming , Chen Wei 
Published: June 2011

AbstractA low‐voltage‐induced sustainable composite actuator is fabricated by repeated grinding of multiwalled carbon nanotubes into a polydimethylsiloxane matrix. The composite exhibits a reversible elongation motion with the applied dc voltage, and a visible strain of nearly 7.5% can be obtained under the 30 V voltage. An electrothermal effect introduced by the carbon nanotube networks in the composite and the induced thermal expansion of the composite is responsible for the electrical actuation behavior. Moreover, the actuated displacement can be controlled by tuning the input electrical power and sustained for a long time period under electrical stimulus without performance degradation. This is due to the dynamic thermal equilibrium of the thermal generation and loss reached in the composite. A coin that is 40 times heavier than the weight of the actuator can be easily lifted upward under the electrical actuation, which demonstrates the excellent weightlifting property. magnified image
DNA mismatch repair network gene polymorphism as a susceptibility factor for pancreatic cancer
Authors: Dong Xiaoqun , Li Yanan , Chang Ping , Hess Kenneth R. , Abbruzzese James L. , Li Donghui 
Published: June 2011

AbstractDNA repair plays a critical role in human cancers. We hypothesized that DNA mismatch repair gene variants are associated with risk of pancreatic cancer. We retrospectively genotyped 102 single‐nucleotide polymorphisms (SNPs) of 13 mismatch repair related genes in 706 patients with pancreatic cancer and 706 cancer‐free controls using the mass spectroscopy‐based MassArray method. Association of genotype with pancreatic cancer risk was tested by multivariate logistic regression models. A significance level of P ≤ 0.0015 was set at the false discovery rate (FDR) <1% using the Beta‐Uniform Mixture method. We found 28 SNPs related to altered pancreatic cancer risk (P < 0.05). Adjusting for multiple comparisons, MGMT I143V AG/GG, PMS2 IVS1‐1121C > T TC/TT, and PMS2L3 Ex1 + 118C > T CT/TT genotypes showed significant main effects on pancreatic cancer risk at FDR <1% with OR (95% CI) of 0.60 (0.46–0.80), 1.44 (1.14–1.81), and 5.54 (2.10–14.61), respectively (P ≤ 0.0015). To demonstrate genotype–phenotype association, we measured O
6‐ethylguanosine (O
6‐EtGua) adduct levels in vitro by immunoslot blot assay in lymphocytes treated with N‐ethyl‐N‐nitrosourea (ENU) in 297 case/control subjects. MGMT I143V GG, MGMT K178R GG, MSH6 G39E AG/AA, PMS2L3 IVS3 + 9A > G GA and TP73 IVS1‐7449G > C CG/CC genotypes correlated with a higher level of ENU‐induced DNA adducts. Haplotypes of MGMT, MSH6, PMS2, PMS2L3, and TP73 were significantly associated with pancreatic cancer risk (P ≤ 0.0015). Our findings suggest that mismatch repair gene variants may affect susceptibility to pancreatic cancer. © 2011 Wiley Periodicals, Inc.
Loss of desmocollin 3 in skin tumor development and progression
Authors: Chen Jiangli , O'Shea Charlene , Fitzpatrick James E. , Koster Maranke I. , Koch Peter J. 
Published: June 2011

AbstractDesmocollin 3 (DSC3) is a desmosomal cadherin that is required for maintaining cell adhesion in the epidermis as demonstrated by the intra‐epidermal blistering observed in Dsc3 null skin. Recently, it has been suggested that deregulated expression of DSC3 occurs in certain human tumor types. It is not clear whether DSC3 plays a role in the development or progression of cancers arising in stratified epithelia such as the epidermis. To address this issue, we generated a mouse model in which Dsc3 expression is ablated in K‐Ras oncogene‐induced skin tumors. Our results demonstrate that loss of Dsc3 leads to an increase in K‐Ras‐induced skin tumors. We hypothesize that acantholysis‐induced epidermal hyperplasia in the Dsc3 null epidermis facilitates Ras‐induced tumor development. Further, we demonstrate that spontaneous loss of DSC3 expression is a common occurrence during human and mouse skin tumor progression. This loss occurs in tumor cells invading the dermis. Interestingly, other desmosomal proteins are still expressed in tumor cells that lack DSC3, suggesting a specific function of DSC3 loss in tumor progression. While loss of DSC3 on the skin surface leads to epidermal blistering, it does not appear to induce loss of cell–cell adhesion in tumor cells invading the dermis, most likely due to a protection of these cells within the dermis from mechanical stress. We thus hypothesize that DSC3 can contribute to the progression of tumors both by cell adhesion‐dependent (skin surface) and likely by cell adhesion‐independent (invading tumor cells) mechanisms. © 2011 Wiley Periodicals, Inc.
Circuit modeling methodology for small UWB antenna with vector fitting technique
Authors: Ren Wang 
Published: June 2011

AbstractThis article presents a new method of SPICE‐compatible circuit modeling for small ultra‐wideband antennas.It can be derived from the input impedance or admittance of the antenna with the vector fitting method. The antenna input impedance or admittance can be easily simulated by an electro magnetic (EM) simulator or measured using a vector network analyzer. And the vector fitting technique is employed to convert input impedance or admittance to a SPICE equivalent circuit. The most important contribution of this study is to show that radio frequency components such as small ultra‐wideband antennas can be integrated into the simulation of communication systems and helps system designers to predict and consider the effect of the radio frequency components in the design process. © 2011 Wiley Periodicals, Inc. Microwave Opt Technol Lett, 2011; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26164
Novel cross‐coupled filter design using improved split‐ring resonators based on stepped impedance resonator
Authors: Zhou Liang , Liu Shaobin , Kong Xiangkun , Guo Yanan 
Published: June 2011

AbstractIn this letter, a novel miniaturized split‐ring resonator (SRR) structure is introduced in designing high‐frequency selectivity and stopband expanded bandpass filter (BPF) with four transmission zeros.Such fundamental resonators consist of a pair of half‐wavelength hairpin‐shaped ring resonators nested in each other, which improved SRR structure. Compared with conventional SRR, this stepped impedance SRR (SISRR) has better performance on miniaturization. To verify good characteristics of the novel structure, a new resonator‐embedded cross‐coupled filter, which is constructed by a pair of new resonators, is proposed. This novel filter is very compact and has high‐frequency selectivity. The improved SRR unit cell has size of 0.108λg × 0.108λg (λg being the signal wavelength at central frequency (2.2 GHz) of the passband). It also has good in‐band and out‐band performances. Its stopbands are extended 0–2.08 GHz at lower band and 2.4–6.68 GHz at upper band with a rejection level of about 20 dB. The measured and simulated results are well complied with each other. © 2011 Wiley Periodicals, Inc. Microwave Opt Technol Lett, 2011; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26169
Miniaturized patch antenna for RFID tags on metallic surfaces
Authors: Eldek Abdelnasser A. 
Published: June 2011

AbstractThe majority of commercial ultra high frequency radio frequency identification tags are based on the dipole antenna, whose performance degrades significantly when the tag is placed near a conducting surface. In this article, we present a radio frequency identification patch tag to operate on conducting surfaces. The antenna provides good bandwidth and return loss level at 915 MHz. It has a very small size on low dielectric material, without the need for shorting pins or walls, which significantly lowers the fabrication cost in mass production using monolithic microwave integrated circuits. © 2011 Wiley Periodicals, Inc. Microwave Opt Technol Lett, 2011; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26177
A compact UWB slot antenna optimized by genetic algorithm
Authors: Xie L. , Jiao Y.‐C. , Wei Y.‐Q. , Zhao G. , Zhang F.‐S. 
Published: June 2011

AbstractA compact ultra‐wideband (UWB) slot antenna based on a mesh‐grid structure is designed. A genetic algorithm is used to optimize the mesh‐grid structure as well as other parameters of the proposed antenna for good impedance matching in the UWB band. The optimized UWB antenna has a compact size of 24 mm × 30 mm and is fabricated and measured. According to the measured results, the proposed antenna yields a wide bandwidth, defined by VSWR<2, ranging from 3.1 to 12.2 GHz and a nearly omnidirectional radiation pattern in the H‐plane. The antenna gains within the matching band are measured and a gain variation from 3.1 to 5.9 dBi is obtained. © 2011 Wiley Periodicals, Inc. Microwave Opt Technol Lett, 2011; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26179
Fractal‐shaped regular hexagon patch resonators and application in miniaturized band‐pass filters
Authors: La Dong‐Sheng , Lu Ying‐Hua , Liu Ning , Cui Dong‐Nuan , Zhang Jin‐Ling 
Published: June 2011

AbstractIn this article, two types of band‐pass filters using fractal‐shaped regular hexagon patch resonators are proposed and optimized in detail.Because of the space‐filling property of the fractal geometry, the resonant characteristics of the filters are reported for the first time and can be adjusted by changing the parameters of the fractal‐shaped structures. Using etched fractal‐shaped defected structures in the regular hexagon patch resonators, the filters have many remarkable advantages, such as compact size, high selectivity, transmission zeros, and simple structure. Two types of band‐pass filters are designed, fabricated, and measured. The measurement results of the proposed band‐pass filters are in good agreement with the simulation ones. © 2011 Wiley Periodicals, Inc. Microwave Opt Technol Lett, 2011; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26182
A 0.35‐μm CMOS cross‐coupled complementary Colpitts voltage controlled oscillator
Authors: Jang Sheng‐Lyang , Liu Wei‐Chih , Chang Chia‐Wei , Huang Jhin‐Fang 
Published: June 2011

AbstractThis article presents a differential cross‐coupled complementary Colpitts CMOS voltage‐controlled oscillator (VCO).The low phase noise CMOS VCO has been implemented with the TSMC 0.35‐μm 2P4M CMOS technology and adopts a pair of cross‐coupled PMOS transistors to achieve faster start‐up oscillation. The VCO operates from 6.16 to 6.5 GHz with 5.3% tuning range. The measured phase noise at 1 MHz offset is −121.12 dBc/Hz at 6.417 GHz. The power consumption of the VCO core is 6.16 mW. The figure of merit is −189.37 dBc/Hz. © 2011 Wiley Periodicals, Inc. Microwave Opt Technol Lett, 2011; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26192
A dualband monopole microstrip antenna
Authors: Sarkar I. , Sarkar P. P. , Chowdhury S. K. 
Published: June 2011

AbstractA novel monopole rectangular printed antenna has been investigated. The simulated result shows wide operating impedance‐bandwidth at two different center frequencies which are verified experimentally with −10‐dB return loss bandwidth of about 3.17 GHz (4.19−7.36 GHz) and 2.43 GHz (8.695–11.125 GHz). © 2011 Wiley Periodicals, Inc. Microwave Opt Technol Lett, 2011; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26196
Single‐mode–multimode–single‐mode fiber structures for simultaneous measurement of strain and temperature
Authors: Wu Qiang , Semenova Yuliya , Hatta Agus Muhammad , Wang Pengfei , Farrell Gerald 
Published: June 2011

AbstractThis article presents two related techniques for the simultaneous measurement of strain and temperature: (1) using two single‐mode–multimode–single‐mode (SMS) fiber structures accompanied with an optical spectral analyzer (OSA); (2) using three SMS fiber structures and a ratiometric power measurement system.Experimental results show that (1) the technique accompanied with an OSA has a resolution of 1.64 με for strain in the range from 0 to 1000 με and 0.11°C for temperature and (2) the technique based on ratiometric system offers a resolution of better than 2 με for strain measurements in the range from 0 to 1000 με and a resolution better than 0.84°C for temperature. © 2011 Wiley Periodicals, Inc. Microwave Opt Technol Lett, 2011; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26205
A DC to 30‐GHz ultra‐wideband CMOS T/R switch
Authors: Shouxian Mou , Kaixue Ma , Seng Yeo Kiat 
Published: June 2011

AbstractA DC to 30‐GHz ultra‐wideband T/R switch based on a 0.18‐μm SiGe process using only CMOS components is implemented. The switch with 1.5‐ to 3.3‐dB insertion loss and 20‐ to 80‐dB isolation achieves wideband on‐chip impedance matching. Besides Vdd/ground, no extra biasing or control voltage level is required in this 0.05‐mm2 switch. © 2011 Wiley Periodicals, Inc. Microwave Opt Technol Lett, 2011; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26217
On the antenna efficiencies for the dielectric leaky‐wave antennas with a sinusoidal metallic diffraction grating coupled from the broad and the narrow face of the dielectric
Authors: Salman A. Oral 
Published: June 2011

AbstractThe antenna efficiencies of dielectric leaky‐wave antennas (DLWA) with sinusoidal metallic diffraction grating for the couplings from the narrow and the broad faces of the dielectric line are compared. It is observed that the narrow face‐coupled DLWA does not exhibit stop‐band behavior giving the opportunity of a wideband operating range while the broad face‐coupled DLWA gives much higher antenna efficiency out of the resonance region. The effects of the geometrical parameters on the antenna efficiency are also investigated. As a common property for both coupling types, choosing a larger teeth depth/amplitude or more number of periods of the sinusoidal grating provides higher antenna efficiency. On the other hand, for the broad face coupling case, the stop‐band frequency shifts significantly for the chosen different values of the grating's period. By this complementary study, an additional data is provided to the antenna designer. © 2011 Wiley Periodicals, Inc. Microwave Opt Technol Lett, 2011; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26223
A multiband planar monopole antenna for mobile communication applications
Authors: Mireles Elias , Brar Manveer K. , Moody Robert A. , Varanasi Shiv K. , Sharma Satish K. 
Published: June 2011

AbstractA planar multiband antenna is proposed for mobile communication applications. The antenna performance is achieved by splitting a planar monopole antenna into two radiating elements. The combination of both halves generates the lower band by means of a meandered slot in the left side and rectangular slots in the right side while upper band resonances are, respectively, attained by each of these radiating elements separately. The antenna can be directly printed onto a circuit board at low cost and requires an area of 50 × 25 mm2. The manufactured antenna is experimentally verified and covers 11 wireless communication bands, namely, GSM850, GSM900, DCS, PCS, IMT‐2000, UMTS, UMTS‐2110, WLAN, ISM/Bluetooth, and WiMAX (2500–2690 MHz and 3400–3600 MHz) with acceptable omnidirectional radiation patterns. © 2011 Wiley Periodicals, Inc. Microwave Opt Technol Lett, 2011; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26227
Clinical characteristics and treatment outcome of children with intraocular retinoblastoma: A report from a Chinese cooperative group
Authors: Gao Yi‐Jin , Qian Jiang , Yue Han , Yuan Yi‐Fei , Xue Kang , Yao Yi‐Qun 
Published: June 2011

AbstractBackgroundTo present the characteristics and treatment outcome of patients with intraocular retinoblastoma in a Chinese cooperative group.ProcedureBetween January 2005 and March 2009, 159 eyes of 133 patients with retinoblastoma were included in this retrospective study. The International Classification of Retinoblastoma (ICRB) staging system was noted for each patient. Cases with visible extraocular extension at diagnosis were excluded. The patient data were reviewed for demographic information, clinical findings, and managements.ResultsOf 133 cases, there were 83 (62%) male and 50 (38%) female, ranging in age from 2 months to 134 months (median, 23 months; mean, 26 months). There were 26 bilateral cases (20%). One hundred and twenty‐four cases (93%) were deemed sporadic and nine cases (7%) were deemed familial. Leukocoria was the most common presenting symptom. One hundred and twenty‐three eyes (77%) of 123 patients (92%) had no visual potential. Only 36 eyes (23%) of 30 patients (23%) utilized vision‐preserving treatments. The ocular salvage rate was 83% (30/36) for this group. The cumulative probability of survival was 98% (Kaplan–Meier method) at 60 months follow up.ConclusionsThe overall survival rate of this study is in agreement with data from developed countries. In appropriate patients, systemic chemotherapy, and focal ophthalmic therapy are effective and carry little morbidity. Compared with more medically developed countries, there are still many challenges in the management of retinoblastoma in China. Early detection and doctor education should be an important future goal. Pediatr Blood Cancer 2011; 57: 1113–1116. © 2011 Wiley Periodicals, Inc.
Immunophenotype and cytogenetic characteristics in the relationship between birth weight and childhood leukemia
Authors: O'Neill Kate A. , Bunch Kathryn J. , Vincent Tim J. , Spector Logan G. , Moorman Anthony V. , Murphy Michael F.G. 
Published: June 2011

AbstractBackgroundHigh birth weight increases the risk of childhood acute lymphoid leukemia (ALL) through unknown mechanisms. Whether this risk is specific to ALL subtypes is unknown, and low case numbers have prevented investigation of the rarer leukemias. Here we address these associations using a large population‐based dataset.ProcedureUsing the National Registry of Childhood Tumors, birth weights of 7,826 leukemia cases, defined by immunophenotype and cytogenetic subgroup, were compared with those of 10,785 controls born in England and Wales between 1980 and 2007.ResultsThe risk for overall leukemia increases 7% with each 0.5 kg increase in birth weight (OR 1.07, 95%CI 1.04–1.10). This risk is limited to the lymphoid leukemias (OR 1.08, 95%CI 1.05–1.12) diagnosed between 1 and 9 years of age. Analysis by cytogenetic feature reveals that there appears to be association with specific chromosomal abnormality: the risk of tumors with high hyperdiploid karyotypes increases 12% per 0.5 kg increase in birth weight (OR 1.12, 95%CI 1.05–1.20), and t(1;19) tumors show an increased risk of 41% per 0.5 kg increase (OR 1.41, 95%CI 1.09–1.84). The risk of acute myeloid leukemia is elevated in high and low birth weight babies. There is no significant risk relationship to other leukemias or myeloproliferative diseases.ConclusionsBirth weight is a risk factor for ALL and AML. Other subtypes of the disease are not significantly affected. There appears to be association with specific chromosomal abnormality, which may aid our understanding of the development of childhood leukemia in utero. Pediatr Blood Cancer 2012; 58: 7–11. © 2011 Wiley Periodicals, Inc.
First contact physicians and retinoblastoma in Mexico
Authors: Leal‐Leal Carlos A. , Dilliz‐Nava Hector , Flores‐Rojo Martha , Robles‐Castro Julieta 
Published: June 2011

AbstractBackgroundEarly detection and timely referral are keys to improve survival in patients with retinoblastoma (Rb). In México, one of the main obstacles for an early diagnosis is the lack of knowledge of the disease. The objective of this study was to evaluate Rb comprehension in students in their last year of medical school.ProcedureA questionnaire was completed by 791 students from 12 universities. Descriptive statistics from the population were obtained and every answer to each question was analyzed.ResultsOnly 3.3% of the students got a proficiency grade. Less than 50% diagnosed Rb when an image was shown.ConclusionsThe students evaluated do not have the knowledge to detect the disease. It is necessary to develop continuous educational programs for first contact physicians. Pediatr Blood Cancer 2011; 57: 1109–1112. © 2011 Wiley Periodicals, Inc.
Rituximab and cyclosporine therapy for accelerated phase Chediak–Higashi syndrome
Authors: Ogimi Chikara , Tanaka Risa , Arai Takashi , Kikuchi Akira , Hanada Ryoji , Oh‐ishi Tsutomu 
Published: June 2011

AbstractA 19‐month‐old male with Chediak–Higashi syndrome developed Epstein–Barr virus (EBV)‐associated accelerated phase. Real‐time polymerase chain reaction showed high EBV–DNA levels in plasma and peripheral blood mononuclear cells. His condition was refractory to conventional treatments for hemophagocytic lymphohistiocytosis, including corticosteroids, cyclosporine, and etoposide. In situ hybridization revealed higher proportion of EBER‐1‐positive cells in CD19+ cell fraction than in CD8+ cell fraction. Complete remission was achieved by combination therapy with rituximab and cyclosporine; subsequent bone marrow transplantation was successful. Combination therapy with rituximab and cyclosporine could be effective in patients with EBV‐infected T and B cells. Pediatr Blood Cancer 2011; 57: 677–680. © 2011 Wiley‐Liss, Inc.