bluuebunny/crossref_metadata_2025_split huggingface dataset:
Facile fabrication of organically modified boron nitride nanosheets and its effect on the thermal stability, flame retardant, and mechanical properties of thermoplastic polyurethane
Authors: Cai Wei , Mu Xiaowei , Pan Ying , Guo Wenwen , Wang Junling , Yuan Bihe , Feng Xiaming , Tai Qilong , Hu Yuan 
Published: June 2018

Although hexagonal boron nitride (h‐BN) has presented a potential prospect in polymer composite fields, undesirable interfacial interaction with polymer matrix that generates serious aggregation of nanomaterials has suppressed its enhancement effect. Moreover, the chemically inert surface of h‐BN also makes the commonly used approach that improves the interfacial interaction between nanofillers and polymeric matrix invalid. Herein, the functionalized modification of chemically inert h‐BN was successfully fabricated by the adsorption of cetyl‐trimethylammonium bromide, with electrostatic interactions. The obtained h‐BN (cetyl‐trimethylammonium bromide‐BN) was well characterized by systematic tests and then added into thermoplastic polyurethane (TPU) matrix. The inclusion of functionalized h‐BN can dramatically improve thermal stability, flame retardant, and mechanical properties of TPU composites. With the incorporation of as low as 4.0 wt% nanofillers, maximal value of heat release rate and total heat release of TPU were reduced by 57.5% and 17.8%, compared with those of pure TPU, respectively. Moreover, tensile strength of TPU composite with a loading of 2.0 wt% was increased by 79.3% in comparison with that of neat TPU. The facile functionalized approach of chemically inert h‐BN paves the way for promising applications of h‐BN in the development of flame retardant polymer materials.
Congenital aqueduct stenosis: Progressive brain findings in utero to birth in the presence of severe hydrocephalus
Authors: Kline‐Fath Beth M. , Arroyo Monica S. , Calvo‐Garcia Maria A. , Horn Paul S. , Thomas Cameron 
Published: June 2018

AbstractPurposeTo evaluate the effects of progressive hydrocephalus on the developing brain in a cohort of fetuses diagnosed with congenital aqueduct stenosis by comparing prenatal magnetic resonance imaging and postnatal imaging.MethodsThis IRB approved single center retrospective review of prenatally diagnosed children with congenital aqueduct stenosis interrogated changes in the brain between prenatal and postnatal imaging and analyzed statistics using SAS software package version 9.3.ResultsThirty fetuses imaged at a mean gestational age of 26 weeks had aqueduct obstruction confirmed by postnatal imaging. Progressive hydrocephalus required shunting in all but one patient (97%). Those patients with increasing hydrocephalus showed increase in ventricular rupture (60%), loss of septal leaflets (47%), and reduction in white matter and corpus callosum volume (43%). Cerebellar ectopia developed in 27% with 6% meeting the criteria for Chiari I malformation.ConclusionHydrocephalus in the fetus results in enlarging ventricular rupture, loss of the septum pellucidum leaflets, volume reduction of brain parenchyma including corpus callosum, and risk for Chiari I anomaly. Given advances in fetal surgery and imaging in the last 3 decades, there may be cause to revisit the idea of in utero cerebral spinal fluid diversion as a means to potentially ameliorate progressive loss of the developing brain.
Prescription of pain medication in prisons: A comparative analysis of younger and older male prisoners
Authors: Annaheim Beatrice , Bretschneider Wiebke , Handtke Violet , Belardi Angelo , Elger Bernice S. 
Published: June 2018

AbstractPurposeIn prison populations, treating pain is particularly challenging, especially for the growing number of older prisoners. The objective was to find out about prevalence, frequency, and types of pain medications prescribed to older prisoners (≥50 years) in comparison with younger prisoners (<50 years).MethodsData were collected in Switzerland as part of a study on ageing prisoners' health. Fifteen prisons (out of 26 of the total eligible population) agreed to take part, and data from medical records of 190 older and 190 younger male prisoners were analysed. Descriptive statistics on pain medication prescriptions (excluding drugs used in opioid dependence) were carried out and differences between the 2 age groups tested for statistical significance.ResultsMore than half of younger and older prisoners were prescribed pain medication during the past 180 days, while 10% of younger and 15% of older prisoners were prescribed pain medication on a daily basis. Nonsteroidal anti‐inflammatory drugs and “other analgesics and antipyretics” were most frequently prescribed. Significantly (P < .05), more younger than older prisoners were prescribed NSAIDs and drugs to treat muscle skeletal pain. Tramadol was the opioid most often prescribed.ConclusionsThis is the first empirical study investigating prescriptions of pain medication in Swiss prisoners on a national level. It shows that nonopioid pain medication is an important part of health care provision inside prison, while there are only few prescriptions of strong opioids. Research is needed to investigate whether the standard set by the principle of equivalence is met regarding treatment of pain in prison.
Depressive symptoms in relation to overall survival in people with head and neck cancer: A longitudinal cohort study
Authors: Jansen Femke , Verdonck‐de Leeuw Irma M. , Cuijpers Pim , Leemans C. René , Waterboer Tim , Pawlita Michael , Penfold Chris , Thomas Steven J. , Waylen Andrea , Ness Andrew R. 
Published: June 2018

AbstractObjectiveThe objective of the study is to investigate the relation between pretreatment depressive symptoms (DS) and the course of DS during the first year after cancer diagnosis, and overall survival among people with head and neck cancer (HNC).MethodsData from the Head and Neck 5000 prospective clinical cohort study were used. Depressive symptoms were measured using the Hospital Anxiety and Depression Scale (HADS) pretreatment, at 4 and 12‐month follow‐up. Also, socio‐demographic, clinical, lifestyle, and mortality data were collected. The association between before start of treatment DS (HADS‐depression > 7) and course (never DS, recovered from DS, or persistent/recurrent/late DS at 12‐month follow‐up) and survival was investigated using Cox regression. Unadjusted and adjusted analyses were performed.ResultsIn total, 384 of the 2144 persons (18%) reported pretreatment DS. Regarding DS course, 63% never had DS, 16% recovered, and 20% had persistent/recurrent/late DS. People with pretreatment DS had a higher risk of earlier death than people without DS (hazard ratio (HR) = 1.65; 95% confidence interval (CI) 1.33‐2.05), but this decreased after correcting for socio‐demographic, clinical, and lifestyle‐related factors (HR = 1.21; 95% CI 0.97‐1.52). Regarding the course of DS, people with persistent/recurrent/late DS had a higher risk of earlier death (HR = 2.04; 95% CI 1.36‐3.05), while people who recovered had a comparable risk (HR = 1.12; 95% CI 0.66‐1.90) as the reference group who never experienced DS. After correcting for socio‐demographic and clinical factors, people with persistent/recurrent/late DS still had a higher risk of earlier death (HR = 1.66; 95% CI 1.09‐2.53).ConclusionsPretreatment DS and persistent/recurrent/late DS were associated with worse survival among people with HNC.
School performance of childhood cancer survivors in Korea: A multi‐institutional study on behalf of the Korean Society of Pediatric Hematology and Oncology
Authors: Park Meerim , Park Hyeon Jin , Lee Jae Min , Ju Hee Young , Park Byung Kiu , Yu Eun‐Seung , Yang Hyung‐Kook , Kim Ji Yoon , Park Sang Kyu , Lee Young Ho , Shim Ye Jee , Kim Heung Sik , Lee Jun Ah , Lim Yeon‐Jung , Cheuh Hee Won , Park Ji Kyoung , Lee Mee Jeong , Kim Soon Ki , Choi Hyoung Soo , Hah Jeong Ok , Park Kyung Duk , Kang Hyoung Jin , Shin Hee Young 
Published: June 2018

AbstractObjectiveTo investigate school performance of childhood cancer survivors focusing on the child's functioning, including peer relationships, school attendance, and academic achievement.MethodsWe studied 241 children from 15 institutions in Korea between 2015 and 2016. The self‐reported paper‐and‐pencil questionnaires were used.ResultsApproximately 22% of the survivors suffered from lack of friends. Bullying was reported by 30% of survivors. Survivors who returned to primary school reported a higher incidence of bullying compared with survivors who returned to middle or high school (P = 0.03). The percentage of children who missed classes more than 4 days in a month was higher in survivors with brain tumors than those with other tumors (P = 0.04). Approximately 41% of children reported learning difficulty. After returning to school, 53% of the patients reported that they had lower overall mark averages than they had before. Patients who returned to high school showed the highest rate of repeating a grade and the lowest rate of achieving high academic marks. The school marks in the Korean (P = 0.03), English (P = 0.04), and physical education (P = 0.04) were worse for the children with brain tumors than for the children with other tumors.ConclusionWe found that 20% to 25% of survivors experienced peer‐related difficulties upon returning to school. Patients who return to school, especially high school, should be provided more educational support to overcome low academic achievement. Particular concern is needed to the patients with brain tumors, who are at risk for significant academic and social difficulties and therefore may require more intensive support in school.
Effect of biaxial‐simultaneous stretching conditions on OTR and CO2 permeation of CO2 laser perforated poly(lactic acid) film
Authors: Winotapun Charinee , Kerddonfag Noppadon , Daud Witchuda , Chinsirikul Wannee , Takarada Wataru , Kikutani Takeshi 
Published: June 2018

The biaxially oriented poly(lactic acid) films prepared using simultaneous biaxial stretching were perforated by CO2 laser with the power of 60 W. The focal spot diameter was fixed at 103 μm. Pulse durations were varied from 1 to 30 μs, which corresponds to the fluence from 1.4 to 42.6 J/cm2. The perforated microhole size increased with increasing laser energy. The shape of microholes was circular for the films of equi‐biaxial stretching, whereas elliptical microholes were formed with its long and short axes corresponding to the directions of higher and lower stretch ratios, respectively. Comparing the laser perforation behavior of the as‐drawn films and annealed films, the opening of a microhole in the annealed films started at higher laser fluence, and at the same fluence the size of microhole was smaller. Gas transmission rates of the biaxially oriented poly(lactic acid) films with different thicknesses were examined. The oxygen transmission rates (OTR) of film improved with increased microhole diameter. The OTR of films containing 1 microhole/103 cm2 (hole diameter of ~110 μm) was 184, 150, and 98 cm3/d in comparison with the OTR for the original films without microhole of only 16, 10, and 8 cm3/d, respectively. Packaging films with OTR higher than 100 cm3/d (equivalent to the 9700 cm3/m2/d) are required to create a modified atmosphere inside the package of fresh produce for shelf‐life extension. Measured OTR and CO2TR values of the 3 different shapes of microhole were compared and discussed.
Extensions and variants of mixed‐level split‐plot designs for manufacturing planning and optimization
Authors: Lee Ho Linda , Vivacqua Carla Almeida , de Pinho André Luís Santos 
Published: June 2018

AbstractDesign of experiments has been applied in manufacturing industry for several decades. Nevertheless, there is still room for exploring its cost‐effectiveness features. For instance, many industrial experiments involve factors with levels more difficult to change than others. This naturally leads to the harder‐to‐change factors being less reset than the easier‐to‐change factors. These randomization restrictions commonly generate the so‐called split‐plot type designs. Methodologies for designing and analyzing such experiments have advanced lately, especially for 2‐level designs. However, practical needs may require the inclusion of factors with more than 2 levels. In this paper, extensions and variants of mixed‐level split‐plot designs are presented. An industry application to evaluate the impact of temperature, type of lubricant, type of pavement, and type of rubber on performance and quality of tires is discussed. Due to lack of previous adequate planning, the actual experiment was executed as an unreplicated split‐strip‐strip‐plot design. As a consequence of the inadvertent split‐plotting, evaluation of the significance of temperature and lubricant is impaired. Other design alternatives, along with their properties, advantages, and disadvantages are shown. This paper aims to contribute to a better understanding of how statistically designed experiments may be used, in a practical way, to manufacturing planning and optimization.
Kriging modelization in predicting metal sheet elongation
Authors: Vicario Grazia , Giraudo Maria Teresa , Calì Valentina 
Published: June 2018

AbstractModern industries are increasingly replacing real experiments with non‐stochastic simulation models due to their restrained costs and growing reliability. The non‐stochastic simulator used in this paper is the Finite Element simulation code (FEM), a widely used numerical technique for the engineering problems modeled by a system of partial differential equations defined on a time‐space domain. In such a context, it is common practice to provide a metamodel, a global approximation of the FEM experiment response on the design space to capture local minima/maxima.We use the most popular metamodel, the Kriging model, applied to an industrial instance: prediction of bend deduction. Metal sheet bending is a manufacturing process in which there is a plastic deformation of the workpieces over an axis. This is a metal forming process, similar to other processes where bending changes the shape of the workpieces.The work focuses on the construction of an optimal initial design in order to achieve a good accuracy of the metamodel at an acceptable computational cost, the theoretical study of this model, and the understanding of how it could be conformed to the bend deduction prediction.The correlation structure, mandatory in a Kriging model, was evaluated by means of the variogram, allowing to refine the correlation specification naturally improving the Kriging predictions. The empirical variograms for each input variable brought to light unusual behaviors. This suggested that the bending angle could be related to the bend deduction according to 2 different models. It is clear that there is a discontinuity in the relationship between the models, but its exact location is not known. The accuracy achieved was then evaluated using different indicators of robustness and the uncertainty of the “leave‐one‐out” methods.
Thermodynamic properties of gaseous cerium molybdates and tungstates studied by Knudsen effusion mass spectrometry
Authors: Shugurov S.M. , Panin A.I. , Lopatin S.I. 
Published: June 2018

RationaleCeO2–WO3 and CeO2–MoO3 catalysts have shown excellent performance in the selective reduction of NOx by ammonia (NH3‐selective catalytic reduction) over a wide temperature range. Strong interaction between CeO2 and WO3 or MoO3 might be the dominant reason for the high activity of these mixed oxides. Studies of ceria‐containing gaseous salts involve considerable experimental difficulties, since the transition of such salts to vapor requires high temperatures. To predict the possibility of the existence of gaseous associates formed by cerium and molybdenum (tungsten) oxides it is important to know their thermodynamic characteristics. Until the present investigation, gaseous cerium oxyacid salts were unknown.MethodsKnudsen effusion mass spectrometry was used to determine the partial pressures of vapor species and the equilibrium constants of gas‐phase reactions, as well as the formation and atomization enthalpies of gaseous cerium molybdates and tungstates. CeO2 was evaporated from molybdenum and tungsten effusion cells containing gold metal as a pressure standard. A theoretical study of gaseous cerium molybdates and tungstates was performed by several quantum chemical methods.ResultsIn the temperature range 2050–2400 K, CeO, CeO2, XO2, XO3, CeWO3, CeXO4, CeXO5 (X = Mo, W) and CeMo2O7 were found to be the main vapor species over the CeO2–Mo(W) systems. On the basis of the equilibrium constants of the gaseous reactions, the standard formation enthalpies of gaseous CeWO3, CeXO4, CeXO5 (X = Mo, W) and CeMo2O7 at 298 K were determined. Energetically favorable structures of gaseous cerium salts were found and vibrational frequencies were evaluated in the harmonic approximation.ConclusionsThe thermal stability of gaseous cerium oxyacid salts was confirmed by high‐temperature mass spectrometry. Reaction enthalpies of the gaseous cerium molybdates and tungstates from gaseous cerium, molybdenum and tungsten oxides were evaluated theoretically and the obtained values are in reasonable agreement with the experimental ones.
Improving the efficiency of solid‐state power amplifier by frequency switching for satellite communication
Authors: Doshi R.J. , Ghodgaonkar Deepak 
Published: June 2018

SummaryThis paper presents a technique to make the solid‐state power amplifier (SSPA) flexible (adaptive) in terms of frequency for space segment of satellite communication. As compared with the present fixed (static) performance SSPA, the flexible frequency SSPA allows the users to keep themselves updated with the changing scenario of satellite communication. The flexibility can be achieved by using PIN diode for high frequency amplifiers and varactor diode for low frequency amplifiers as switch. The bias voltage of the diode can be changed remotely by means of telecommandable circuit. The gallium nitride–based SSPAs using this concept will be able to compete the travelling wave tube amplifier for onboard applications. It also demonstrates the circuit topology for selecting the required narrow frequency band rather than designing broadband SSPA resulting in improvement of efficiency and device's channel temperature. Improvement of channel temperature in space application improves the reliability of active devices.
Ontology reuse for multiagent system development through pattern classification
Authors: Shiang Cheah Wai , Tee Fu Swee , Halin Alfian Abdul , Yap Ng Keng , Hong Puah Chin 
Published: June 2018

SummaryOntologies play a crucial role in multiagent systems (MASs) development, especially for domain knowledge modeling, interaction specifications, and behavioral aspect representation. Domain‐specific ontologies can be developed in an ad hoc or systematic manner through the incorporation of ontology development steps on the basis of agent‐oriented methodologies. Developing such ontologies, however, is challenging because of the extensive amounts of knowledge and experience required. Moreover, since many ontologies cater for very specific domains, the question arises of whether some can be reused for faster systems development. This paper attempts to answer this question by proposing an ontology pattern classification scheme to allow the reuse of existing ontology knowledge for MAS development. Specifically, ontology patterns relevant to the design problem at hand are identified through the pattern classification scheme. These patterns are then reused and shared among agent software communities during the system development phase. The effectiveness of the proposed approach is validated using a restaurant‐finder MAS case study. Our findings suggest that utilization of the classified ontology patterns reduces development time and complexity when dealing with domain‐specific applications. The scheme also seems useful for software practitioners, where searching and reusing the patterns can easily be done during the analysis, design, and implementation of MAS development.
Lineament Mapping over Sir Creek Offshore and its Surroundings using High Resolution EGM2008 Gravity Data: An Integrated Derivative Approach
Authors: Kumar Ujjawal , Pal S. K. , Sahoo Soumyashree Debasis , Narayan Satya , Saurabh  , Mondal Subhendu , Ganguli Shuva Shankha 
Published: June 2018

ABSTRACT
The present study deals with the delineation of lineaments over Sir Creek offshore and its surroundings from EGM2008 gravity data using various derivative techniques owing to their cost-effectiveness in prospective hydrocarbon exploration. Initially, 2-D and 3-D synthetic models have been generated with vertical prismatic objects at different depths. The effectiveness of total horizontal derivative (THD) technique has been established by comparing with E-W and N-S Horizontal derivatives and First Vertical derivative techniques. The residuals of Bouguer gravity data have been estimated with different cut-off wavelengths. Further, the residual anomaly map has been enhanced by the derivative techniques for the delineation of the structural features. Possible depths of the delineated lineaments have been estimated using Euler deconvolution of the Bouguer gravity data, which indicates maximum clustering over the delineated lineaments. It is observed that most of the lineaments are in the depth range of 1.0 km to 5.5km, which correlate well with the previous seismic studies. The present study reveals that the major lineament trends in the N-S, E-W and NNW-SSE directions followed by NE-SW, NW-SE and ENE-WSW directions. These major lineament trends are due to the tectonic activities occurred during Precambrian and Cretaceous period. Different small circular features, rectangular features and shorter wavelength features have also been identified, which could be the key parameter for mapping potential location for hydrocarbon exploration.
The Role of the Body Clock in Asthma and COPD: Implication for Treatment
Authors: Krakowiak Karolina , Durrington Hannah J. 
Published: June 2018

AbstractAsthma exhibits a marked time of day variation in symptoms, airway physiology, and airway inflammation. This is also seen in chronic obstructive pulmonary disease (COPD), but to a lesser extent. Our understanding of how physiological daily rhythms are regulated by the circadian clock is increasing, and there is growing evidence that the molecular clock is important in the pathogenesis of these two airway diseases. If time of day is important, then it follows that treatment of asthma and COPD should also be tailored to the most efficacious time of the day, a concept known as ‘chronotherapy’. There have been a number of studies to determine the optimal time of day at which to take medications for asthma and COPD. Some of these agents are already used ‘chronotherapeutically’ in practice (often at night-time). However, several studies investigating systemic and inhaled corticosteroids have consistently shown that the best time of day to take these medications for treating asthma is in the afternoon or early evening and not in the morning, when these medications are often prescribed. Future, large, randomized, placebo-controlled studies of systemic and inhaled corticosteroids in asthma and COPD are needed to inform clinical practice.
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