bluuebunny/crossref_metadata_2025_split huggingface dataset:
Uniplanar tunable bandpass filter using centrally‐loaded slot‐line resonator
Authors: Chen Jian‐Xin , Bao Zhi‐Hua , Xu Chen , Zhang Guo‐An 
Published: October 2011

AbstractA novel uniplanar tunable bandpass filter (BPF) is designed by using the centrally loaded slot‐line resonator. From the voltage‐wave distribution along the resonator, the proper location for the loading element is determined to be the center of the slot‐line resonator, where the voltages of the fundamental signal and second harmonic are maximum and zero, respectively. As a result, the fundamental frequency can be tuned, whereas the second harmonic remains almost unchanged. For the first time, the properties of the centrally loaded slot‐line resonator are analyzed by using the even‐ and odd‐mode method, and their respective resonant frequencies are derived. The demonstrated tunable BPF can give >30% frequency tuning range with acceptable insertion loss when a varactor is used as the loading element. © 2010 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52:2805–2807, 2010; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.25617
Erratum: Single‐shot all‐optical sampling oscilloscope using a polarization‐maintaining resonator for pulse replication
Authors: Komanec Matěj , Honzátko Pavel , Zvánovec Stanislav 
Published: October 2011

AbstractOriginally published Microwave Opt Technol Lett 52: 2452–2456, 2010. © 2010 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52: 2853, 2010; Published online in Wiley Online Library (wileyonlinelibrary.com). DOI 10.1002/mop.25620 (Original article DOI 10.1002/mop.25509)
Effect of esophagus distention on urinary bladder function in rats
Authors: Kaddumi Ezidin G. , Qnais E.Y. , Allouh M.Z. 
Published: October 2011

AbstractAimsMicturition process is a spinobulbospinal reflex that is affected by the viscero‐visceral interactions due to convergent inputs into spinal and/or supraspinal centers controlling that reflex. Although interaction between bladder and other pelvic organs, such as colon, are well studied, the viscero‐visceral interaction between urinary bladder and internal organs in other regions are rarely studied.MethodsIn the present study, continuous filling cystometry recordings, in male rats, were used to investigate the effects of mechanical stimulation of distal‐esophagus (distention), as well as, electrical stimulation of abdominal branches of the vagus nerve on urinary bladder micturition cycles.ResultsDistal esophagus distention and electrical stimulation of the vagus nerve significantly increased the micturition frequency through decreasing the time of the storage phase of the micturition cycle. However, bilateral cervical vagotomy eliminated the effects of distal esophagus distention and electrical stimulation of vagus nerve on micturition cycles.ConclusionsThe results of this study indicate that there is a viscero‐visceral interaction between esophagus and urinary bladder, which is mediated through vagal afferents. Understanding the properties of the viscero‐visceral interactions affecting the urinary bladder will help in the diagnosis and management of micturition problems. Neurourol. Urodynam. 31:174–177, 2012. © 2011 Wiley Periodicals, Inc.
Antimuscarinic effects on current perception threshold: A prospective placebo control study
Authors: Vijaya Gopalan , Digesu G. Alessandro , Derpapas Alexandros , Hendricken Caroline , Fernando Ruwan , Khullar Vik 
Published: October 2011

AbstractAimsTo evaluate the effect of Tolterodine on urethral and bladder afferent nerves in women with detrusor overactivity (DO) in comparison to placebo, by studying the changes in the current perception threshold (CPT).MethodsWomen with overactive bladder symptoms and idiopathic DO were recruited and randomized in a double‐blind manner between placebo and tolterodine extended release. All women underwent CPT testing of the bladder and urethra using a Neurometer constant current stimulator. CPT values were determined at three frequencies, including 2,000 Hz (corresponding to Aβ‐fibers), 250 Hz (corresponding to Aδ‐fibers), and 5 Hz (corresponding to C fibers) before and 7 days on treatment. CPT values before and on treatment were compared using a Wilcoxon Signed Rank test.ResultsTwenty women (mean age 46 years) were studied. There was no statistical difference between the two groups in terms of age, ethnicity, severity of symptoms and pre‐treatment CPT values. Only in the tolterodine group there was a significantly increased CPT value at 5 and 250 Hz upon both urethral and bladder stimulation after 1 week of treatment. When compared with placebo, women taking tolterodine had significantly increased Bladder CPT values at 5 Hz (P‐value <0.05). The electrical stimulation with 5 Hz was described as urgency.ConclusionsThis is a randomized placebo control study evaluating the effect of antimuscarinics on sensory nerve function in women with DO. Our results support the animal studies that antimuscarinics have an effect on sensory function. Neurourol. Urodynam. 31:75–79, 2012. © 2011 Wiley Periodicals, Inc.
Evidence of central modulation of bladder compliance during filling phase
Authors: Smith Phillip P. , DeAngelis Anthony M. , Kuchel George A. 
Published: October 2011

AbstractAimsBladder compliance is one expression of the pressure and volume relationship as the bladder fills. In addition to passive elements, autonomous micromotional detrusor activity contributes to this relationship. In the mouse cystometric model, compliance pressure contributes to voiding expulsive pressure. During attempts to isolate the detrusor contractile component of this filling pressurization, we found that compliance reversibly diminishes under conditions which remove central control from the micturition cycle.MethodsTen mature female mice underwent constant infusion pressure/flow cystometry under urethane anesthesia, and five awake mature female mice underwent constant infusion pressure cystometry. Following baseline cystometry, all mice were anesthetized with isoflurane to abolish the micturition reflex, and cystometry conducted with manual emptying of the bladders. Animals were then allowed to recover from isoflurane to re‐establish the micturition reflex, and cystometry again conducted. The urethane group was also studied immediately post‐mortem. Repeated measures comparisons of cystometric parameters were made across conditions.ResultsCompliance reversibly decreased in all mice with the abolishment of micturition responses by isoflurane anesthesia. A similar decrease was observed immediately post‐mortem in the urethaned mice. Bladder filling and voiding were not different between the intact micturition segments of the testing.ConclusionsEnhanced compliance in mice with intact micturition responses suggests that autonomous micromotional activity is suppressed by central processes during normal filling. Since afferent activity during filling is also determined by the relationship between bladder pressure and volume, a feed‐forward afferent signal conditioning mechanism may exist, creating novel therapeutic targets for urinary dysfunctions. Neurourol. Urodynam. 31:30–35, 2012. © 2011 Wiley Periodicals, Inc.
Hemophagocytic lymphohistiocytosis after hematopoietic stem cell transplantation in children: A nationwide survey in Japan
Authors: Asano Takeshi , Kogawa Kazuhiro , Morimoto Akira , Ishida Yasushi , Suzuki Nobuhiro , Ohga Shouichi , Kudo Kazuko , Ohta Shigeru , Wakiguchi Hiroshi , Tabuchi Ken , Kato Shunichi , Ishii Eiichi 
Published: October 2011

AbstractBackgroundHemophagocytic lymphohistiocytosis (HLH) is associated with hypercytokinemia in children. Although HLH can be also observed after hematopoietic stem cell transplantation (HSCT), the incidence and clinical features of HLH after HSCT remain obscure.ProcedureThe clinical features of HLH after HSCT (post‐HSCT HLH) were investigated in children with malignancies, immune deficiencies, or aplastic anemia. The HLH/Langerhans Cell Histiocytosis (LCH) Committee of the Japanese Society of Pediatric Hematology (JSPH) sent questionnaires to hospitals with JPSH members asking for details of cases in which HLH occurred after HSCT between 1998 and 2008.ResultsAmong 42 children who were diagnosed with post‐HSCT HLH between 1998 and 2008 in Japan, 37 fulfilled our inclusion criteria; of these, 26 were classified as early‐onset (onset <30 days after HSCT) and 11 were classified as late‐onset (onset >30 days after HSCT). In the early‐onset group, the presence of respiratory symptoms, high levels of total bilirubin, and triglycerides at onset and the lack of control of GVHD with tacrolimus were significantly associated with non‐resolution of HLH (P < 0.05). The survival rate was significantly higher in patients with resolution of HLH than in those without resolution (59% vs. 14%, P < 0.05).ConclusionsThese findings suggest that early‐onset post‐HSCT HLH is a specific entity of HLH, and appropriate diagnosis and prompt management need to be established. Pediatr Blood Cancer 2012; 59: 110–114. © 2011 Wiley Periodicals, Inc.
Lessons from the past: Opportunities to improve childhood cancer survivor care through outcomes investigations of historical therapeutic approaches for pediatric hematological malignancies
Authors: Hudson Melissa M. , Neglia Joseph P. , Woods William G. , Sandlund John T. , Pui Ching‐Hon , Kun Larry E. , Robison Leslie L. , Green Daniel M. 
Published: October 2011

AbstractInvestigations of long‐term outcomes have been instrumental in designing safer and more effective contemporary therapies for pediatric hematological malignancies. Despite the significant therapeutic changes that have occurred over the last five decades, therapy modifications largely represent refinements of treatment protocols using agents and modalities that have been available for more than 30 years. This review summarizes major trends in the evolution of treatment of pediatric hematological malignancies since 1960 to support the relevance of the study of late effects of historical therapeutic approaches to the design and evaluation of contemporary treatment protocols and the follow‐up of present‐day survivors. Pediatr Blood Cancer 2012; 58: 334–343. © 2011 Wiley Periodicals, Inc.
Prenatal sonographic evaluation of the penile length
Authors: Perlitz Yuri , Keselman Leandro , Haddad Sami , Mukary Maggie , Izhaki Ido , Ben‐Ami Moshe 
Published: October 2011

ObjectiveTo construct cross‐sectional reference range of the penile length during pregnancy, measuring it from the proximal edge of the corpus cavernosum to the tip of the glans penis.MethodsFetal penile length was measured by high resolution transvaginal ultrasound at 14 to 16 weeks and by transabdominal ultrasound at 17 to 35 weeks' gestation.ResultsFetal penile length increased significantly with gestational age (GA), from 7 mm at 14 weeks' to 50 mm at 35 weeks' gestation. Penile length measurements were strongly related to the biometric fetal measurements.ConclusionsA reference range of the fetal penile length was constructed, measured from the proximal edge of the corpus cavernosum to the tip of the glans penis at 14 to 35 gestational weeks. This reference range can assist in early identification of true penile maldevelopment, which obligate further diagnostic workup, as opposed to the benign disorder of buried or concealed fetal penis. Copyright © 2011 John Wiley & Sons, Ltd.
A validation study of photovoltaic module series resistance determination under various operating conditions according to IEC 60891
Authors: Polverini Davide , Tzamalis Georgios , Müllejans Harald 
Published: October 2011

ABSTRACTThis paper presents a validation study on series resistance determination of photovoltaic modules on the basis of the IEC 60891 edition 2.0 (2009) normative standard. A selection of different technologies has been investigated, ranging from polycrystalline silicon to thin film modules. Their I–V characteristics have been measured at the European Solar Test Installation under various operating conditions with respect to module temperature and irradiance. The aim of this research work is twofold: firstly, it contributes to the quantitative assessment of the effect of the various calculation parameters on the overall precision of the series resistance; secondly, it provides information about the dependence of series resistance on module performance over a wide range of irradiance and module temperature. A comparison with the previous calculation procedure from the first edition of the IEC 60891 (1987) has also been performed in order to understand how the differences between the two methods can affect the final results. Copyright © 2011 John Wiley & Sons, Ltd.
Electrical performance increase of concentrator solar cells under Gaussian temperature profiles
Authors: Chemisana Daniel , Rosell Joan Ignasi 
Published: October 2011

ABSTRACTLinear solar concentrators focus radiation onto the solar cell achieving a Gaussian illumination profile. Most of these concentrators use an active cooling system to evacuate the energy not converted into electricity to avoid undesirable overheating. Heat sinks can cause different temperature profiles in the cell depending on the cooling mechanism. Two temperature patterns are most common: the Gaussian and the anti‐Gaussian. The effect of these temperature curves on the cell's electrical parameters has been analysed and characterised numerically and experimentally under different concentrated radiations. A power output increase is shown when the cell is subjected to a Gaussian temperature profile. Contrarily, the cell efficiency decreases more than 3% under the anti‐Gaussian temperature profile. It is demonstrated that it is possible to tailor the temperature profile to maximise voltage output for determined illumination conditions. Copyright © 2011 John Wiley & Sons, Ltd.
A semi‐empirical approach for predicting unobserved peptide MS/MS spectra from spectral libraries
Authors: Hu Yingwei , Li Yunzi , Lam Henry 
Published: October 2011

AbstractSpectral library searching is a promising alternative to sequence database searching in peptide identification from MS/MS spectra. The key advantage of spectral library searching is the utilization of more spectral features to improve score discrimination between good and bad matches, and hence sensitivity. However, the coverage of reference spectral library is limited by current experimental and computational methods. We developed a computational approach to expand the coverage of spectral libraries with semi‐empirical spectra predicted from perturbing known spectra of similar sequences, such as those with single amino acid substitutions. We hypothesized that the peptide of similar sequences should produce similar fragmentation patterns, at least in most cases. Our results confirm our hypothesis and specify when this approach can be applied. In actual spectral searching of real data sets, the sensitivity advantage of spectral library searching over sequence database searching can be mostly retained even when all real spectra are replaced by semi‐empirical ones. We demonstrated the applicability of this approach by detecting several known non‐synonymous single‐nucleotide polymorphisms in three large human data sets by spectral searching.
Facile synthesis of poly(ether carbonate)s via copolymerization of CO2and propylene oxide under combinatorial catalyst of rare earth ternary complex and double metal cyanide complex
Authors: Dong Yanlei , Wang Xianhong , Zhao Xiaojiang , Wang Fosong 
Published: October 2011

AbstractPoly(ether carbonate)s (PPCs) with carbonate unit (CU) content ranging from 57.8 to 97.1% and number average molecular weight (Mn) around 100 kg/mol were conveniently prepared via copolymerization of CO2and propylene oxide under combinatorial catalyst of rare earth ternary (RET) complex and double metal cyanide (DMC) complex. Enhancement of catalytic activity and reduction of propylene carbonate byproduct were realized due to synergetic effect of the two metal catalysts, where DMC can be activated in the presence of RET. Solubility fractionation confirmed that the obtained PPCs were copolymers, not physical blends of each polymer. Thermal performances of the PPCs were closely related to their CU content, their glass transition temperatures (Tg) were tunable in the range of 6.7–36.3 °C, which decreased with decreasing CU content, while their thermal stabilities were enhanced significantly, an increase of 50.5 °C in 50% weight loss temperature was observed when CU content decreased from 97.1 to 57.8%. Both shear storage modulus and complex viscosity increased with increasing CU content, which became more obvious at lower frequency, featuring well with the CU content in the PPCs. © 2011 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem, 2012
Physical aging of epoxy polymers and their composites
Authors: Odegard G. M. , Bandyopadhyay A. 
Published: October 2011

AbstractExposure to extended periods of sub‐Tg temperatures causes physical changes in the molecular structure of epoxy resins and epoxy‐based materials to occur. These physical aging mechanisms include the reduction in free volume and changes to the molecular configuration. As a result, mechanical, thermodynamical, and physical properties are affected in ways that can compromise the reliability of epoxy‐based engineering components and structures. In this review, the physical changes in the molecular structure of epoxies are described, and the influence of these changes on the bulk‐level response is detailed. Specifically, the influence of physical aging on the quasistatic mechanical properties, viscoelasticity, fracture toughness, thermal expansion coefficient, volume relaxation, enthalpy relaxation, endothermic peak temperature, fictive temperature, and moisture/solvent absorption capability is reviewed. Also discussed are relationships between relaxation functions, crosslink density, composite reinforcement, and epoxy/copolymer blending and the physical aging response of epoxies. Finally, the concepts of thermal and mechanical rejuvenation are discussed. © 2011 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys, 2011
Automated Time‐lapse ERT for Improved Process Analysis and Monitoring of Frozen Ground
Authors: Hilbich C. , Fuss C. , Hauck C. 
Published: October 2011

ABSTRACTA new automated electrical resistivity tomography (A‐ERT) system is described that allows continuous measurements of the electrical resistivity distribution in high‐mountain or polar terrain. The advantages of continuous resistivity monitoring, as opposed to single measurements at irregular time intervals, are illustrated using the permafrost monitoring station at the Schilthorn, Swiss Alps. Data processing was adjusted to permit automated time‐effective handling and quality assessment of the large number of 2D electrical resistivity profiles generated. Results from a one‐year dataset show small temporal changes during periods with snow cover, and the largest changes during snowmelt in early summer and during freezing in autumn, which are in phase with changes in either near‐surface soil moisture or subsurface temperature. During the snowmelt period, spatially variable infiltration processes were observed, leading to a rapid increase in soil moisture and corresponding decrease in electrical resistivity over a period of a few days. This infiltration led to the onset of active‐layer thawing long before the seasonal snow cover vanished. Statistical analyses showed that both spatial and temporal variability over the course of one year are similar, indicating the significance of spatial heterogeneity regarding active‐layer dynamics. As a result of its cost‐effective ability to monitor freezing and thawing processes even at greater depths, the new A‐ERT system can be widely applied in permafrost regions, especially in the context of long‐term degradation processes. Copyright © 2011 John Wiley & Sons, Ltd.
Hemoptysis after orthopedic surgery in an adolescent boy
Authors: Boon M. , Proesmans M. , De Boeck K. 
Published: October 2011

AbstractIn children, post‐obstructive pulmonary edema is a rare condition, caused by a sudden change in upper airway patency. It causes dyspnea, tachypnea, hypoxemia, and at times hemoptysis and respiratory insufficiency. It occurs as a complication in the immediate post‐operative period. Pediatricians should be aware of this clinical entity. Pediatr Pulmonol. 2012; 47:623–625. © 2011 Wiley Periodicals, Inc.
The Effect of Textured Insoles on Gait in People with Multiple Sclerosis: An Exploratory Study
Authors: Dixon John , Gamesby Helen , Robinson Jonathan , Hodgson David , Hatton Anna L. , Warnett Rosie , Rome Keith , Martin Denis 
Published: October 2011

AbstractPurposeThis study aimed to investigate whether textured insoles can improve gait in people with multiple sclerosis (MS).RelevancePrevious studies have shown that footwear, including textured insoles, may improve postural stability in healthy young and older adults (Palluel et al., 2008; Hatton et al., 2009; Hatton et al., 2011), and there is some evidence to show that footwear interventions may be beneficial for people with MS (Ramdharry et al., 2006; Kelleher et al., 2010).ParticipantsForty‐six people with MS (34 women), mean age (SD) 49 years (7), who reported that they were able to walk 100 m with or without resting with the use of one stick or crutch, participated in the study.MethodsEthical approval was granted by the Local Research Ethics Committee. Participants were randomized to one of two textured insole groups: texture A (Algeos UK Ltd, Liverpool, UK), which was used in our previous studies (Hatton et al., 2009; Hatton et al., 2011), or texture B, a commercial insole (Crocs™, Den Haag, The Netherlands). Participants conducted baseline walking tests at their preferred speed along an instrumented walkway (GAITRite) in a laboratory setting, and temporal–spatial gait parameters were extracted. Participants then wore the insoles for two weeks and returned for repeat testing.AnalysisPaired t‐tests were used to evaluate changes between baseline and follow‐up.ResultsStride length increased between baseline and follow‐up in both legs in group A (left p = 0.01, right p = 0.02) and group B (left p = 0.02, right p = 0.02). Velocity and cadence did not change significantly in either group.DiscussionThis finding that textured insoles can produce improvements in stride length requires further investigation. It is consistent with research on foot orthoses in MS showing an improvement in balance after four weeks of wear (Ramdharry et al., 2006). Copyright © 2011 John Wiley & Sons, Ltd.
Temperature‐dependent thermo‐mechanical and Raman spectroscopy study of the SRS‐active melilite‐type crystal Ca2ZnSi2O7 (hardystonite) at its incommensurate–commensurate phase transition
Authors: Becker Petra , Libowitzky Eugen , Bohatý Ladislav , Liebertz Josef , Rhee Hanjo , Eichler Hans‐Joachim , Kaminskii Alexander A. 
Published: October 2011

AbstractStimulated Raman scattering (SRS) active crystals of Ca2ZnSi2O7 (hardystonite) adopt a melilite‐type structure at temperatures above ca. 402 K, while at ambient conditions they show a two‐dimensionally incommensurate structure modulation. To study the influence of the incommensurability of the structure on SRS‐based χ(3)‐nonlinear lasing of the crystals temperature‐dependent Raman spectroscopy investigations at the commensurate–incommensurate phase‐transition and comparative SRS measurements in the high‐temperature and in the low‐temperature phase of Ca2ZnSi2O7 are reported. In addition, the commensurate–incommensurate phase transition is characterised by caloric and dilatometric measurements, and linear optical properties of the crystals are given.