bluuebunny/crossref_metadata_2025_split huggingface dataset:
The Perception of Domestic Tourists Riding Motorcycle in Bali on Traffic Safety
Authors: Ariawan Agus , Wedagama Priyantha 
Published: October 2019

This study aims to model and analyse the perceptions of domestic tourists riding motorcycle on traffic safety using Bali Province in Indonesia as the case study area. Structural Equation Model was constructed to examine the causal relationship among the motorcyclists' characteristics, perceptions and attitudes. Young domestic tourist riding motorcycle were found to be less likely to involve in cornering and speeding than the older ones. In addition, the level of education has been found insignificant to influence domestic tourists becoming more aware of motorcycle traffic safety. Meanwhile, motorcyclists scoring high on aggressive riding are considered to be more likely to interact with risky riding such as speeding and cornering. In addition, speeding has been considered as a significant contributing factor in traffic accidents and casualties. In a response this study finding, further studies and some initiatives are suggested to increase road safety particularly motorcycle traffic safety in Bali. Penelitian ini bertujuan untuk memodelkan dan menganalisis persepsi wisatawan domestik yang mengendarai sepeda motor terhadap keselamatan lalu lintas di Provinsi Bali. Structural Equation Model disusun untuk menganalisis hubungan kausal antara karakteristik, persepsi dan sikap pengendara sepeda motor. Hasil studi menunjukkan bahwa wisatawan domestik usia muda dibandingkan yang berusia lebih tua saat mengendarai sepeda motor lebih kecil kemungkinannya untuk berkendara dengan kecepatan tinggi di jalan raya. Sementara itu, tingkat pendidikan wisatawan domestik tidak berpengaruh secara signifikan dalam peningkatan kesadaran terhadap keselamatan berlalu lintas saat mengendarai sepeda motor. Wisatawan domestik yang teridentifikasi pengendara sepeda motor yang agresif cenderung berperilaku yang beresiko seperti berkendara dengan kecepatan tinggi di jalan raya. Berkendara dengan kecepatan tinggi juga berkontribusi signifikan terhadap tingkat keparahan korban luka-luka akibat kecelakaan lalu lintas. Studi lanjutan terkait temuan pada penelitian ini dibahas pada artikel ini dan beberapa inisiatif untuk meningkatkan keselamatan lalu lintas bagi pengendara sepeda motor di Bali.
Desfazendo o mito do super-herói docente
Authors: Andrade Rogério Alencar Ferraz de 
Published: October 2019

Este artigo procura investigar acerca da influência das concepções sociais sobre a figura do professor de Língua Materna como único responsável pela motivação dos alunos para a aprendizagem. Com uma breve introdução acerca do desenvolvimento da teoria da motivação pelas duas principais correntes psicológicas que situam a aprendizagem como centro de sua preocupação e uma análise das posturas defendidas pela teoria relacional de Joseph Nuttin e complementadas pela pedagogia simbólica junguiana, o artigo tenta descrever a importância dos fatores que normalmente são deixados de lado nos estudos comumente desenvolvidos. Trata-se da tentativa de voltar os olhares dos educadores para outros paradigmas essenciais na ordem do aprender e do significar a tarefa dos educadores entre si, com os alunos e com toda a sociedade.
SOI wafer fabricated with extremely thick deposited BOX layer using a surface activated bonding technique at room temperature
Authors: Koga Yoshihiro , Kurita Kazunari 
Published: October 2019

Abstract
The fabrication cost of bonded silicon on insulator (SOI) wafers for customized power devices is high owing to the high temperature required and the very long fabrication process involving both thermal oxidation and bonding. In addition, SOI wafers are contaminated with metallic impurities during the formation of the buried oxide (BOX) layer and the bonding of a silicon layer on the BOX layer. Therefore, we propose an alternative SOI wafer fabrication method combining BOX layer deposition and surface activated bonding at room temperature in a vacuum without any voids. There is also no fixed charge in the deposited BOX layer, and the breakdown voltage of this layer is 11–12 MV cm−1, the same as that for a thermal oxide layer.
Elastic Energy Storage Enables Rapid and Programmable Actuation in Soft Machines
Authors: Pal Aniket , Goswami Debkalpa , Martinez Ramses V. 
Published: October 2019

AbstractStorage of elastic energy is key to increasing the efficiency, speed, and power output of many biological systems. This paper describes a simple design strategy for the rapid fabrication of prestressed soft actuators (PSAs), exploiting elastic energy storage to enhance the capabilities of soft robots. The elastic energy that PSAs store in their prestressed elastomeric layer enables the fabrication of grippers capable of zero‐power holding up to 100 times their weight and perching upside down from angles of up to 116°. The direction and magnitude of the force used to prestress the elastomeric layer can be controlled not only to define the final shape of the PSA but also to program its actuation sequence. Additionally, the release of the elastic energy stored by PSAs causes their high‐speed recovery (≈50 ms), which significantly improves the actuation rates of soft pneumatic actuators, especially after motions requiring large deformations. Moreover, judicious prestressing of PSAs can also create bistable soft robotic systems, which use their stored elastic energy as a source of power amplification for rapid movements. These strategies serve as a basis for a new class of entirely soft robots capable of recreating bioinspired high‐powered and high‐speed motions using stored elastic energy.
Regulating Electrical Cue and Mechanotransduction in Topological Gradient Structure Modulated Piezoelectric Scaffolds to Predict Neural Cell Response
Authors: Kim Jeong In , Hwang Tae In , Lee Jeong Chan , Park Chan Hee , Kim Cheol Sang 
Published: October 2019

AbstractNeural cells respond to topographical cues with alterations in cell growth and neurite sprouting mediated by changes in cell behavior. The interaction of fiber topography with cell adhesion receptors affects how the cells adhere to the surface of fibers and defines cell fate through alterations in the biochemistry, physiology, and morphology of neural cells. Although previous studies suggest topographical features influence neural cell proliferation and neurite sprouting, only a few studies have attempted to assess the use of both electrical and topological cues in piezoelectric scaffolds for nerve regeneration. In this study, variations in the shape‐modified collectors enable tunable surface topographic constructs, from micropatterns to fiber bundle structure. The crystallinity, chemical composition, and quantitative analysis confirm that the interplay between the topological structures of the fibers and the blending of nanocomposite materials is critical for the formation of the β‐phase. It is found that the topographical features and induced electrical characteristics affect cell growth. Also, the intracellular signaling pathway is induced that can provide clues as to how neural cells respond to the topological gradient structure modulated piezoelectric scaffolds. An analysis of the neuron‐specific cytoskeletal related markers further reveals that the specific topographical features piezoelectric fibrous scaffold reinforces neuron‐specific cytoskeletal proteins and microtubule assembly.
Self‐Powered Iontophoretic Transdermal Drug Delivery System Driven and Regulated by Biomechanical Motions
Authors: Wu Changsheng , Jiang Peng , Li Wei , Guo Hengyu , Wang Jie , Chen Jie , Prausnitz Mark R. , Wang Zhong Lin 
Published: October 2019

AbstractTransdermal drug delivery (TDD) systems with feedback control have attracted extensive research and clinical interest owing to their unique advantages of convenience, self‐administration, and safety. Here, a self‐powered wearable iontophoretic TDD system that can be driven and regulated by the energy harvested from biomechanical motions is proposed for closed‐loop motion detection and therapy. A wearable triboelectric nanogenerator (TENG) is used as the motion sensor and energy harvester that can convert biomechanical motions into electricity for iontophoresis without stored‐energy power sources, while a hydrogel‐based soft patch with side‐by‐side electrodes is designed to enable noninvasive iontophoretic TDD. Proof‐of‐concept experiments on pig skin with dyes as model drugs successfully demonstrate the feasibility of the proposed system. This work not only extends the application of TENG in the biomedical field, but may also provide a cost‐effective solution for noninvasive, electrically assisted TDD with closed‐loop sensing and treatment.
Spectrally Stable Ultra‐Pure Blue Perovskite Light‐Emitting Diodes Boosted by Square‐Wave Alternating Voltage
Authors: Tan Zhifang , Luo Jiajun , Yang Longbo , Li Xiao , Deng Zhiyang , Gao Liang , Chen Hongting , Li Jinghui , Du Peipei , Niu Guangda , Tang Jiang 
Published: October 2019

AbstractPerovskite light‐emitting diodes (PeLEDs) have attracted great research interests considering their excellent luminescent properties and solution processability. Despite rapid advances of green‐, red‐, and near‐infrared‐emitting PeLEDs, blue‐PeLEDs, as an essential part for full‐color display and solid‐state lighting, still remain challenging due to their low efficiency and spectral instability. Here, reported are spectrally stable blue‐PeLEDs biased by an alternating voltage. First, 2‐phenoxyethylamine‐passivated CsPbBrxCl3−x is obtained as a blue emitter with a record photoluminescence quantum yield of 88%. Subsequently, constructed and optimized are pure blue‐emitting PeLEDs exhibiting electroluminescence (EL) at 468 nm with a high external quantum efficiency of 0.71%. Furthermore, driven are the devices by square‐wave alternating voltage and stabilized are the EL spectra for 12 h by suppressing the detrimental halide migration during operation. It is believed that this work provides an alternative way for the spectrally stable mixed halide blue PeLEDs.
Catalytic Azido‐Hydrazination of Alkenes Enabled by Visible Light: Mechanistic Studies and Synthetic Applications
Authors: Wang Peng , Luo Yunxuan , Zhu Songsong , Lu Dengfu , Gong Yuefa 
Published: October 2019

AbstractA visible‐light‐enabled catalytic intermolecular azido‐hydrazination method for unactivated alkenes is developed via an orderly radical addition sequence. This transformation features metal‐free and redox‐neutral conditions and is applicable to a wide range of alkenes with commercially available reagents. Mechanistic and kinetic studies reveal that the efficient generation of azide radical enabled by fluorenone under visible‐light is critical to this methodology. The β‐azido alkyl hydrazines prepared with this reaction can be conveniently derived to valuable synthetic building blocks, and one of the products has been successfully applied in the total synthesis of (±)‐ibrutinib, which is used to treat B cell cancers.magnified image
Copper‐Leaf‐Based Process for Imperceptible Computational Electronics
Authors: de Mulatier Séverine , Coulon David , Delattre Roger , Blayac Sylvain , Ramuz Marc 
Published: October 2019

AbstractImperceptible electronics have a key role in tomorrow's wearable technologies. Individual elements such as ultra‐thin sensors, batteries, solar cells, and actuators are well described in literature, but there is a lack of methods to build the computing circuit itself. A new process is presented for the fabrication of flexible and imperceptible circuits that reach standards of microelectronics associated with significant integration density of components and interconnections, as well as multilayering. The stack uses a commercialized decorative copper leaf with a thickness of 450 nm as the conductive layer and a parylene substrate of a few micrometers. The copper leaf shows both high compliance and conductivity of bulk copper (5.96 × 107 S m−1), with electrical resistance stable over 5000 cycles of complete folding. The process requires stencil‐free laser patterning that reaches fine‐pitch integration, conventional soldering methods, and a three‐step via fabrication and assembly process for multilayered circuits. The functionality of an ultra‐thin, multilayered, lightweight, electrocardiogram‐monitoring device is demonstrated. This allows for direct transfer of microelectronic designs for rapid prototyping from rigid board to imperceptible electronics.
Phenacyl Xanthates: A Photoremovable Protecting Group for Alcohols under Visible Light
Authors: Yang Yong‐Qing , Lu Zheng , Xu Ximing 
Published: October 2019

AbstractThe utility of phenacyl xanthates for the protection of hydroxyl groups is reported herein. Phenacyl xanthates are readily prepared via a one‐pot procedure, which employs the commercially available, inexpensive 2‐bromoacetophenone and carbon disulphide. The introduction of phenylcarboxymethyl dithiocarbonates could be achieved in good to excellent yield in the presence of ester group or ketal group. The hydroxyl group can be released in the presence of ethidine under irradiation of visible light without photocatalyst. The phenacyl xanthates could be selectively removed without affecting a series of common protecting groups, such as benzoate, tetrahydropyran and ketal groups. Finally, a plausible mechanism of photocleavage of phenacyl xanthates has been discussed.
Dynamic changes in thalamic connectivity following stress and its association with future depression severity
Authors: Zhang Xue , Li Xuesong , Steffens David C. , Guo Hua , Wang Lihong 
Published: October 2019

AbstractIntroductionTracking stress‐induced brain activity and connectivity dynamically and examining activity/connectivity‐associated recovery ability after stress might be an effective way of detecting stress vulnerability.MethodsUsing two widely used stress paradigms, a speech task (social stress) and a mathematical calculation task (mental loading stress), we examined common changes in regional homogeneity (ReHo) and functional connectivity (FC) before, during, and after the two stressful tasks in thirty‐nine college students. A counting breath relaxation task was employed as a contrast task. ReHo and FC were compared between subjects with higher versus lower depression symptoms (assessed by the Beck Depression Inventory, BDI). We developed a recovery index (RI) based on dynamic changes of ReHo/FC to evaluate individuals' ability to recover from a stressful state. To assess RI's usefulness in predicting future depression severity, BDI was also measured at one‐year follow‐up.ResultsOur results revealed a ReHo decrease after both stressful tasks and a ReHo increase after the relaxation task in bilateral thalamus. The ReHo decrease after both stressful tasks was more significant in the higher BDI than the lower BDI group. Higher ReHo RI of the right thalamus in the higher BDI groups was significantly correlated with lower BDI severity at one‐year follow‐up. Bilateral thalamus also showed increased FC with the default mode network and decreased FC with the executive control network after the stressful tasks.ConclusionThese findings highlight the importance of tracking resting activity and connectivity of thalamus dynamically for detecting stress vulnerability.
Long‐term survival of an advanced colorectal cancer patient treated with Regorafenib: Case report and literature review
Authors: Brunetti Oronzo , Calabrese Angela , Palermo Loredana , Solimando Antonio Giovanni , Argentiero Antonella 
Published: October 2019

AbstractTwo phase 3 trials reported a prolonged survival in the third‐line setting of colorectal cancer patients treated with regorafenib with the longest duration of treatment of 16 months. Herein, we reported a unique case of a patient refractory to conventional chemotherapy who showed a prolonged stable disease with regorafenib.
Kinetics and Isotherms of Mercury Biosorption by Dry Biomass of Arthrospira (Spirulina) platensis
Authors: Solisio Carlo , Spennati Elena , Casazza Alessandro Alberto , Arni Saleh , Alves Palma Mauri Sérgio , Converti Attilio 
Published: October 2019

AbstractInorganic mercury was effectively removed from water solutions by means of dry biomass of Arthrospira (Spirulina) platensis as biosorbent. The results obtained at defined pH and biomass concentration as well as variable Hg concentrations were used to estimate biosorption kinetics and isotherm parameters. Biosorption kinetics was best described by the pseudo‐first‐order model of Lagergren that allowed estimating an average specific rate constant as high as 0.044 min−1, while the Dubinin and Radushkevich model was the best fitting isotherm. Hg biosorption seemed to occur via physisorption. Considering the wide dissemination of A. platensis and its easy cultivation, these results point to its biomass as a low‐cost biosorbent to treat Hg‐contaminated waters.
Development of High‐Capacity and Water‐Lean CO2 Absorbents by a Concise Molecular Design Strategy through Viscosity Control
Authors: Liu An‐Hua , Li Jie‐Jie , Ren Bai‐Hao , Lu Xiao‐Bing 
Published: October 2019

AbstractThe exponentially increasing viscosity of water‐lean CO2 absorbents during carbon capture processes is a critical problem for practical application, owing to its strong correlation with systems’ mass transfer properties, as well as convenience of transportation. In this work, a concise strategy based on structure–viscosity relationships is proposed and applied to construct a series of functionalized ethylenediamines as single‐component absorbents for post‐combustion CO2 capture. These nonaqueous absorbents have outstanding viscosities (50–200 cP, 25 °C) at their maximal CO2 capacities (up to 22 wt % or 4.92 mol kg−1, 1 bar), and are readily regenerated at low temperatures (50–80 °C) under ambient pressure. Additional capture of CO2 through physisorption could also be achieved by operating at high pressures. The CO2 capture and release process is systematically investigated by means of 13C NMR spectroscopy, differential scanning calorimetry (DSC), in situ FTIR analysis, and density functional theory (DFT) calculations, which could provide sufficient spectroscopic details to reveal the ease of reversibility and enable rational interpretation of the absorption mechanism.
Strategies to optimize modeling habitat suitability of Bertholletia excelsa in the Pan‐Amazonia
Authors: Tourne Daiana C. M. , Ballester Maria V. R. , James Patrick M. A. , Martorano Lucieta G. , Guedes Marcelino Carneiro , Thomas Evert 
Published: October 2019

AbstractAimAmazon‐nut (Bertholletia excelsa) is a hyperdominant and protected tree species, playing a keystone role in nutrient cycling and ecosystem service provision in Amazonia. Our main goal was to develop a robust habitat suitability model of Amazon‐nut and to identify the most important predictor variables to support conservation and tree planting decisions.LocalizationAmazon region, South America.MethodsWe collected 3,325 unique Amazon‐nut records and assembled >100 spatial predictor variables organized across climatic, edaphic, and geophysical categories. We compared suitability models using variables (a) selected through statistical techniques; (b) recommended by experts; and (c) integrating both approaches (a and b). We applied different spatial filtering scenarios to reduce overfitting. We additionally fine‐tuned MAXENT settings to our data. The best model was selected through quantitative and qualitative assessments.ResultsPrincipal component analysis based on expert recommendations was the most appropriate method for predictor selection. Elevation, coarse soil fragments, clay, slope, and annual potential evapotranspiration were the most important predictors. Their relative contribution to the best model amounted to 75%. Filtering of the presences within a radius of 10 km displayed lowest overfitting, a satisfactory omission rate and the most symmetric distribution curve. Our findings suggest that under current environmental conditions, suitable habitat for Amazon‐nut is found across 2.3 million km2, that is, 32% of the Amazon Biome.Main conclusionThe combination of statistical techniques with expert knowledge improved the quality of our suitability model. Topographic and soil variables were the most important predictors. The combination of predictor variable selection, fine‐tuning of model parameters and spatial filtering was critical for the construction of a reliable habitat suitability model.
Creosote growth rate and reproduction increase in postfire environments
Authors: Lee Molinari Rebecca , Bishop Tara B. B. , Bekker Matthew F. , Kitchen Stanley G. , Allphin Loreen , St. Clair Samuel B. 
Published: October 2019

AbstractHuman activities are changing patterns of ecological disturbance globally. In North American deserts, wildfire is increasing in size and frequency due to fuel characteristics of invasive annual grasses. Fire reduces the abundance and cover of native vegetation in desert ecosystems. In this study, we sought to characterize stem growth and reproductive output of a dominant native shrub in the Mojave Desert, creosote bush (Larrea tridentata (DC.) Coville) following wildfires that occurred in 2005. We sampled 55 shrubs along burned and unburned transects 12 years after the fires (2017) and quantified age, stem diameter, stem number, radial and vertical growth rates, and fruit production for each shrub. The shrubs on the burn transects were most likely postfire resprouts based on stem age while stems from unburn transects dated from before the fire. Stem and vertical growth rates for shrubs on burned transects were 2.6 and 1.7 times higher than that observed for shrubs on unburned transects. Fruit production of shrubs along burned transects was 4.7‐fold more than shrubs along paired unburned transects. Growth rates and fruit production of shrubs in burned areas did not differ with increasing distance from the burn perimeter. Positive growth and reproduction responses of creosote following wildfires could be critical for soil stabilization and re‐establishment of native plant communities in this desert system. Additional research is needed to assess if repeat fires that are characteristic of invasive grass‐fire cycles may limit these benefits.
Basic electrical characteristics of epoxy/hollow silica composites influenced by addition of hollow silica
Authors: Murakami Yoshinobu , Matsubara Takayuki , Kawashima Tomohiro , Hozumi Naohiro 
Published: October 2019

AbstractPolymeric insulating materials like an epoxy resin due to their excellent electric performance and a maintenance performance are commonly applied to various power equipment. Additives and fillers are traditionally added into the epoxy resin to improve the mechanical and thermal properties. The epoxy/hollow particle composites have been developed to produce the composite material which has new function like the low dielectric constant, the lightweight, and the high heat insulation. To understand the basic electrical properties of epoxy/hollow silica composites, the capacitance measurement, the breakdown test and the partial discharge measurements were performed. The breakdown strength of the epoxy/hollow silica composites and the breakdown strength of the epoxy/no hollow silica (normal silica) composites were almost the same regardless of the applied voltage waveform. The AC breakdown voltage at the 0‐peak of the epoxy/hollow silica composites also agreed with the DC breakdown voltage of that. Furthermore, the PDIV of the epoxy/hollow silica composites was almost the same compared to that of epoxy/normal silica composites. The continuous partial discharge in the hollow region did not cause the breakdown, and the existence of the interface between the silica particle and the epoxy resin might lead to the breakdown.