bluuebunny/crossref_metadata_2025_split huggingface dataset:
Multiband monopole U‐slot patch antenna with truncated ground plane
Authors: Chandan  , Srivastava Toolika , Rai B. S. 
Published: May 2016

ABSTRACTIn this article, a wideband microstrip‐fed monopole antenna with truncated ground plane is designed for multiband communication. The proposed antenna consists of a rectangular patch with two U‐shaped slots, and a ground plane with two rectangular slots. By cutting two U‐shaped slots in the radiating patch number of resonance is increased and more impedance bandwidth is achieved by cutting slots in ground plane which also improve impedance matching. The antenna is designed on the substrate FR4_epoxy to operate over four bands from 1.10–1.46 GHz, 2.23–2.91 GHz, 3.41–3.95 GHz, and 5.24–5.96 GHz with resonance frequencies of 1.21, 2.57, 3.61, and 5.60 GHz with % impedance bandwidth of 28.04, 26.45, 14.67, and 12.85% (for S11 < −10 dB). The antenna is simulated using software HFSS v13. Simulated and measured results are presented to validate the effectiveness of the proposed antenna for 1.2 GHz GPS, 2.4/5.5 GHz WLAN, and 3.5 WiMAX applications. © 2016 Wiley Periodicals, Inc. Microwave Opt Technol Lett 58:1949–1952, 2016
Diffraction of cylindrical waves by a perfectly conducting half‐screen: A modified theory of physical optics solution
Authors: Ziya Umul Yusuf 
Published: May 2016

ABSTRACTThe scattering problem of waves, radiated by a line source, is investigated by the method of modified theory of physical optics. The solution is obtained for both of the Dirichlet and Neumann boundary conditions. Two dimensional modified theory of physical optics integral is considered, since the problem is symmetric according to one of the spatial coordinates. The scattering integral is directly evaluated and a new function is defined for the scattered fields. The mathematical properties of the function are studied. The total, geometrical optics and diffracted waves are analyzed numerically. © 2016 Wiley Periodicals, Inc. Microwave Opt Technol Lett 58:1996–2001, 2016
A transmissive/absorbing radome with double absorbing band
Authors: Yuan Xujin , Yuan Xiaofeng 
Published: May 2016

ABSTRACTA concise transmissive/absorbing radome principle model is presented, which realizes flat‐top wide‐band transmission band and two electromagnetic absorbing wide band located above and beneath the transmission band. Simulation indicates reflection signature of this radome structure could be reduced by over −10 dB out of transmission band. Frequency‐selective characters are achieved by one resistive FSS layer and two metallic FSS layers with nested square element, along with two dielectric spacer layers. An experimental‐demonstration sample plate fabrication and measurement testifies the model preliminarily. © 2016 Wiley Periodicals, Inc. Microwave Opt Technol Lett 58:2016–2019, 2016
A strategic model for state compliance verification
Authors: Listner Clemens , Niemeyer Irmgard , Canty Morton , Stein Gotthard 
Published: May 2016

AbstractThe theory of directed graphs and noncooperative games is applied to the problem of verification of State compliance to international treaties on arms control, disarmament and nonproliferation of weapons of mass destruction. Hypothetical treaty violations are formulated in terms of illegal acquisition paths for the accumulation of clandestine weapons, weapons‐grade materials or some other military capability. The paths constitute the illegal strategies of a sovereign State in a two‐person inspection game played against a multi‐ or international Inspectorate charged with compliance verification. The effectiveness of existing or postulated verification measures is quantified in terms of the Inspectorate's expected utility at Nash equilibrium. A prototype software implementation of the methodology and a case study are presented. © 2016 Wiley Periodicals, Inc. Naval Research Logistics 63: 260–271, 2016
Primary Cutaneous Lymphomas in Children and Adolescents
Authors: Ceppi Francesco , Pope Elena , Ngan Bo , Abla Oussama 
Published: May 2016

Primary cutaneous lymphomas are rare in children and mostly represented by mycosis fungoides and CD30+ lymphoproliferative disorders. Most pediatric cutaneous lymphomas have similar clinical/pathological features as their adult counterparts, particularly the T‐cell subtypes. With regard to outcome, adult cutaneous mature T‐cell lymphomas have a tendency to progression, while this appears to be relatively infrequent in children. The outcome of cutaneous B‐cell lymphomas depends on subtype, with the B‐lymphoblastic entity being associated with similar outcomes to precursor B acute lymphoblastic leukemia, while there are insufficient data on other entities. The diagnosis and treatment of these patients require a close collaboration between experienced pediatric pathologists, dermatologists, and oncologists. Prospective collection of longitudinal clinical and biological data from children with these rare lymphomas is needed to better understand their biological and clinical behavior and to ultimately discover the best therapeutic strategies.
Safety and efficacy of recombinant factor VIIa by pediatric age cohort: reassessment of compassionate use and trial data supporting US label
Authors: Croteau Stacy E. , Nakar Charles , Neufeld Ellis J. , Shapiro Amy , Cooper David L. 
Published: May 2016

AbstractBackgroundThe relative safety and efficacy of recombinant activated coagulation factor VII (rFVIIa, NovoSeven® RT) across pediatric age cohorts is poorly defined. The objective of this analysis was to assess the safety and efficacy of rFVIIa in pediatric patients with congenital hemophilia with inhibitors (CHwI) in the clinical studies supporting the U.S. labeling.ProcedurePediatric data were derived from seven studies (five acute and two perioperative treatments) and pooled. All data were stratified by age (<2, 2 to <6, 6 to <12, and 12–16 years) and study category (acute treatment of bleeding episodes or surgery).ResultsThe pediatric dataset included 172 patients; 144 received rFVIIa for the treatment of bleeding episodes and 28 for the control of bleeding perioperatively. Recombinant FVIIa was effective for 95.4% (1,026/1,076) of the evaluable bleeding episodes and had similar treatment effectiveness across pediatric age groups (range, 94.1–97.2%). The majority received doses of 90 mcg/kg. rFVIIa was effective in achieving perioperative hemostasis across pediatric age groups (range, 91–100%), with greater efficacy observed with the recommended (90 mcg/kg) versus lower dose (35 mcg/kg). A total of 88 pediatric patients experienced a total of 285 adverse drug reactions, similar in type to those reported among adult patients. A total of seven thrombotic events were recorded in seven pediatric patients; only one was confirmed related to rFVIIa upon individual case review.ConclusionsrFVIIa is safe and effective in the treatment of bleeding episodes and prevention of periprocedure bleeding in CHwI with no apparent differences observed among pediatric age groups.
Enhancement of silicon solar cells by downshifting with Eu and Tb coordination complexes
Authors: Fix T. , Nonat A. , Imbert D. , Di Pietro S. , Mazzanti M. , Slaoui A. , Charbonnière L. J. 
Published: May 2016

AbstractLuminescent lanthanide‐doped oxides, nanoparticles, nanocrystals, and coordination complexes are major tools in the fields of optical and laser materials, telecommunications, medical imaging, and fluoroimmunoassays. In particular, coordination complexes are efficient energy converters with high photostability, large ligand‐induced Stokes shifts, and tunable excitation and emission spectra. However, their application as light downshifting materials for solar cells has not yet been widely explored. This third generation solar cell concept enables to increase the efficiency of standard solar cells—such as Si or copper indium gallium (di)selenide (CIGS)—that have low performance for ultraviolet photons. The incorporation of such a converter in solar module encapsulants can provide a cheap and effective way to integrate photon conversion. Here, encapsulants functionalised by photon downshifting coordination complexes have been spin‐coated on silicon solar cells. For all the coordination complexes, an increase of the spectral response of the solar cells is observed in the ultraviolet region. In the best case, a relative increase of 8% of the conversion efficiency of the solar cell is observed. Copyright © 2016 John Wiley & Sons, Ltd.
Solvent network at the transition state in the solvolysis of hindered sulfonyl compounds
Authors: Iazykov Mykyta , Rublova Ludmila , Canle L. Moisés , Santaballa J. Arturo 
Published: May 2016

Alcoholysis rates of unhindered benzenesulfonyl chlorides (X‐ArSO2Cl, X = H‐; 4‐Br‐; 4‐Me‐) are similar in methanol; the same behavior is also observed in ethanol, whereas the reactivity order in iso‐propanol is 4 Me‐ < H‐ < 4‐Br‐. On the other hand, alcoholysis of sterically hindered arenesulfonyl chlorides (X‐ArSO2Cl) (X = 2,4,6‐Me3‐3‐NO2‐; 2,6‐Me2‐4‐tBu‐; 2,4,6‐Me3‐; 2,3,5,6‐Me4‐; 2,4,6‐iPr3‐; 2,4‐Me2‐; 2,4,6‐(OMe)3‐) in all studied alcohols show a significant increase in reactivity, the so‐called positive steric effect.Most of the substrates showed a reaction order b ~ 2 with respect to the nucleophile in methanol and ethanol, and b ~ 3 in iso‐propanol. The correlation between reactivity and the Kirkwood function (1/ξ) gives negative sensitivity (U) for all systems. All substrates showed high sensitivity to media nucleophilicity that depends on ΣσX.Obtained results suggest the alcoholysis of benzenesulfonyl chlorides proceeds through SN2 mechanism where the transition state (TS) involves the participation of 2–3 alcohol molecules; such a TS can be cyclic, in the case of unbranched alcohols, or linear, for alcohols with bulkier hydrocarbon groups like iso‐propanol. To include the number of alcohol molecules playing such a role in the TS, the following terminology is proposed: cSN2sn for SN2 reactions involving n solvent molecules in a cyclic (c) TS, where “s” stands for the solvent and “n” is either the closest integer or half‐integer to the reaction order relative to the solvent or, in computational studies, the proposed number of solvent molecules taking part in the TS, whereas SN2sn is proposed when the TS is not cyclic. Copyright © 2016 John Wiley & Sons, Ltd.
Interest in initiating an early phase clinical trial: results of a longitudinal study of advanced cancer patients
Authors: Dunn Laura B. , Wiley Jim , Garrett Sarah , Hlubocky Fay , Daugherty Christopher , Trupin Laura , Munster Pamela , Dohan Daniel 
Published: May 2016

AbstractObjectiveEnhanced recruitment of patients with advanced cancer (ACP) to early phase (EP) trials is needed. However, selective recruitment may affect the kinds of patients who are recruited. To address whether ACP who initiate EP trial enrollment differ from those who do not, we prospectively surveyed ACP well in advance of potential trial recruitment and followed them over time to identify those who initiated the recruitment process.MethodsEP trial initiation was defined as a patient being referred for screening to an active EP trial. Depression and anxiety were assessed with the Patient Health Questionnaire (PHQ‐9) and Generalized Anxiety Disorder Scale (GAD‐7), respectively. Demographic and disease characteristics, functional status, and patient preferences regarding decision making were examined as possible predictors of EP trial initiation.ResultsOf the 78 advanced cancer patients in the cohort studied, 21 (27%) initiated EP trial participation, while 57 (73%) did not. Of those who initiated this process, 14 (67%) went on to enroll in an EP study. Level of depression severity was associated with EP trial initiation, with rates of initiation nearly three times higher (35% vs. 12%, p = 0.054) among patients with minimal to mild levels of depression compared to those with moderate or higher levels of depression. EP trial initiation was not associated with demographic or socioeconomic variables, cancer type, functional status, quality of life, or decision‐making variables.ConclusionsThe presence of elevated depressive symptoms may be associated with the EP trial recruitment and enrollment processes. This possible relationship warrants further study. Copyright © 2016 John Wiley & Sons, Ltd.
Context and Implications Document for: Learner Engagement: A Review of Approaches in the Psychology of Education and Art Education
Authors: Kinsella Claire , Putwain David W. , Kaye Linda K. 
Published: May 2016

This guide accompanies the following article: Claire Kinsella, David W. Putwain and Linda K. Kaye, Learner Engagement: A Review of Approaches in the Psychology of Education and Art Education, Review of Education, DOI:10.1002/rev3.3063
The Sterically Demanding Thiosilyl Group SSi(SiMe3)3 as a Ligand in Transition Metal Chemistry
Authors: Kotsch Matthias , Gienger Christian , Schrenk Claudio , Schnepf Andreas 
Published: May 2016

AbstractThe increasing number of metalloid clusters, synthesized in the last couple of years, gives new insights into the formation process of metals or semi‐metals. Metalloid clusters of the transition metals, especially the coinage metals are thereby of particular interest and the number of structurally characterized metalloid gold clusters has increased over the last decade. Most of these clusters are stabilized via aryl thiolate ligands. Herein, the synthesis and crystal structures of the lithium and potassium salts of the bulky SSi(SiMe3)3 ligand are presented together with the synthesis of suitable MI precursors (M = Cu, Ag, Au) for further build‐up reactions to metalloid clusters.
Cholic Acid‐Derived Facial Surfactants with Long Side‐Chain Quaternary Ammonium: Synthesis and Antimicrobial Activity Study
Authors: Zhou Lanxiang , Li Yang , Li Shuangshuang , Shen Xinliang , Wang Cunde 
Published: May 2016

AbstractFour cholic acid cationic surfactants containing a flexible long aliphatic chain were synthesized efficiently. A long aliphatic chain was introduced first on the side‐chain carboxyl of cholic acid by one‐pot condensation reaction of cholic acid and C12–C18 amines using DCC (Dicyclohexylcarbodiimide) and HOBt (N‐hydroxybenzotrizole) as condensation agents for the formation of an amide framework. Then reduction of the amide and quaternization gave a cationic group for strengthening hydrophilicity. This strategy offered a very straightforward and efficient method for access to the designed surfactants in good overall yields. Preliminary results show that an increase both in the length of the hydrophobic tail and in the number of charged groups lowered the CMC of cholic acid‐derived cationic surfactants. Cholic acid‐based cationic surfactants containing a flexible longer aliphatic chain and a quaternary ammonium had the highest antimicrobial activity.
Combined Urea Complexation and Argentated Silica Gel Column Chromatography for Concentration and Separation of PUFAs from Tuna Oil: Based on Improved DPA Level
Authors: Mu Hongyan , Jin Jun , Xie Dan , Zou Xiaoqiang , Wang Xiaosan , Wang Xingguo , Jin Qingzhe 
Published: May 2016

AbstractEicosapentaenoic acid (EPA, 20:5n‐3), docosapentaenoic acid (DPA) isomers (22:5n‐6 and 22:5n‐3) and docosahexaenoic acid (DHA, 22:6n‐3) derived from tuna oil were concentrated by three stages of urea fractionation at various crystallization temperatures and different fatty acid/urea ratios. Thereafter, polyunsaturated fatty acids concentrate containing comparatively enriched DPA levels was purified by argentated silica gel column chromatography. A product containing 22.2 ± 0.6 % EPA, 4.6 ± 0.0 % DPAn‐6, 5.9 ± 0.1 % DPAn‐3 and 42.3 ± 1.2 % DHA was obtained at 1:1.6 fatty acid/urea ratio (w/w) by crystallization at −8 °C for 16 h, −20 °C for 8 h, and −8 °C for 16 h. A DPA isomer concentrate containing 26.1 ± 0.5 % DPAn‐6 and 22.3 ± 0.4 % DPAn‐3 was achieved by argentated silica gel chromatography in the 6 % acetone/n‐hexane solvent fraction (v/v), and the recovery of both fatty acids was 66.1 ± 3.2 and 70.7 ± 2.2 %, respectively. Furthermore, 91.9 ± 2.5 % EPA and 99.5 ± 2.1 % DHA with recoveries of 47.8 ± 2.0 and 56.7 ± 3.3 %, respectively, were obtained in various fractions.
Determination of the Best Parameter for Defining the Hemodynamic Significance of an Iliac Artery Stenosis Detected on Computed Tomography Angiography
Authors: Lougheed Nick , Jaskolka Jeff , Beecroft Rob , Menezes Ravi 
Published: May 2016

Purpose The purpose of this study was to determine the best parameter, derived from computed tomography angiography (CTA) for accurate prediction of a hemodynamically significant stenosis of the common or external iliac artery. Methods A retrospective keyword search was performed on the Radiology Information System at our tertiary academic medical centre. Reports from January 2008 to September 2013 were searched using the keywords iliac, stenosis, and pressure. Patients who had both and CTA and a pelvic angiogram with pressure measurements obtained across a potential stenosis were selected. Using 3D postprocessing software (TeraRecon, Foster City, CA), the CTAs were analysed for the following parameters of each lesion: minimum diameter of stenosis, minimum cross-sectional area of stenosis, percent narrowing of vessel diameter, and percent reduction in vessel area. The percent stenosis was calculated in reference to the outer diameter at the point of maximal narrowing and also in reference to a normal segment of vessel more distal to the stenosis. These parameters were then compared with the measured pressure gradient using receiver-operating characteristic analysis and the Mann-Whitney U test to determine which best predicted a significant stenosis, defined as a greater than 10% drop in systolic pressure across a lesion. Results One hundred and two stenoses in 83 patients (26 women, 57 men; 47-88 years old) were identified. Mean diameter of the stenosis was 2.8 mm for significant stenosis compared to 3.8 mm in nonsignificant stenoses ( P = .005). Mean minimum area for significant stenoses was 11.8 mm2 compared to 17.22 mm2 for nonsignificant stenoses ( P = .032) No other variables showed a significant difference between significant and nonsignificant stenoses. A minimum diameter of ≤4.0 mm at the level of a stenosis is 92% sensitive and 48% specific for predicting a hemodynamically significant iliac artery stenosis, with a positive predictive value of 88%. Conclusions A simple measurement of the minimum diameter of an iliac artery at the level of stenosis is the best predictor of the hemodynamic significance of a stenosis in the common or external iliac artery.
Transition from community dwelling to retirement village in older adults: cognitive functioning and psychological health outcomes
Authors: HOLLAND CAROL , BOUKOUVALAS ALEXIS , WALLIS STUART , CLARKESMITH DANIELLE , COOKE RICHARD , LIDDELL LEANNE , KAY AMANDA 
Published: May 2016

ABSTRACTSupported living and retirement villages are becoming a significant option for older adults with impairments, with independence concerns or for forward planning in older age, but evidence as to psychological benefits for residents is sparse. This study examined the hypothesis that the multi-component advantages of moving into a supported and physically and socially accessible ‘extra-care’ independent living environment will impact on psychological and functioning measures. Using an observational longitudinal design, 161 new residents were assessed initially and three months later, in comparison to 33 older adults staying in their original homes. Initial group differences were apparent but some reduced after three months. Residents showed improvement in depression, perceived health, aspects of cognitive function and reduced functional limitations, while controls showed increased functional limitations (worsening). Ability to recall specific autobiographical memories, known to be related to social problem solving, depression and functioning in social relationships, predicted change in communication limitations, and cognitive change predicted changes in recreational limitations. Change in anxiety and memory predicted change in depression. Findings suggest that older adults with independent living concerns who move to an independent but supported environment can show significant benefits in psychological outcomes and reduction in perceived impact of health on functional limitations in a short period. Targets for focused rehabilitation are indicated, but findings also validate development of untargeted general supportive environments.
Residential care and care to community-dwelling parents: out-selection, in-selection and diffusion of responsibility
Authors: VAN DEN BROEK THIJS , DYKSTRA PEARL A. 
Published: May 2016

ABSTRACTResearch suggests that adult children are less likely to provide care to community-dwelling parents when beds in residential care settings are more widely available. The underlying mechanisms are not well understood. Drawing on data from the Survey of Health, Ageing and Retirement in Europe (SHARE) on 1,214 impaired parent–child dyads from 12 countries, we find that adult children are less likely to provide care in countries where beds in residential care settings are more widely available because (a) parents’ care needs are less severe in such countries (out-selection hypothesis) and (b) adult children and impaired parents are less likely to share a household in such countries (in-selection hypothesis). Finally (c), after taking these two factors into account, adult children remain less likely to provide care in countries where beds in residential care settings are more widely available (diffusion of responsibility hypothesis). Plausibly, being able to rely on residential care undermines adult children's sense of urgency to step in and provide care to their parents.
On the computation of measure-valued solutions
Authors: Fjordholm Ulrik S. , Mishra Siddhartha , Tadmor Eitan 
Published: May 2016

A standard paradigm for the existence of solutions in fluid dynamics is based on the construction of sequences of approximate solutions or approximate minimizers. This approach faces serious obstacles, most notably in multi-dimensional problems, where the persistence of oscillations at ever finer scales prevents compactness. Indeed, these oscillations are an indication, consistent with recent theoretical results, of the possible lack of existence/uniqueness of solutions within the standard framework of integrable functions. It is in this context that Young measures – parametrized probability measures which can describe the limits of such oscillatory sequences – offer the more general paradigm ofmeasure-valued solutionsfor these problems.We present viable numerical algorithms to compute approximate measure-valued solutions, based on the realization of approximate measures as laws of Monte Carlo sampled random fields. We prove convergence of these algorithms to measure-valued solutions for the equations of compressible and incompressible inviscid fluid dynamics, and present a large number of numerical experiments which provide convincing evidence for the viability of the new paradigm. We also discuss the use of these algorithms, and their extensions, in uncertainty quantification and contexts other than fluid dynamics, such as non-convex variational problems in materials science.