bluuebunny/crossref_metadata_2025 huggingface dataset:
In Silico Biosimulation of Isoflurane Effects on Brain Using Transcriptome-To-Metabolome™ Technology
Authors: Bourdon Allen K. , Phelix Clyde F.
Published: September 2016

Anesthetics are a widely used class of drugs with a fast onset and comparatively slow offset, which consequently equates to a low therapeutic index. Unfortunately, the mechanism of action for this class of drugs is considered unknown. For that reason, there is great medical need to study effects of anesthetics on the brain. In this study transcriptomes, generated 6 hours after a 15 minute exposure to isoflurane, from the rat cortex and basolateral amygdala were used to determine parameters for a deterministic biosimulation model of metabolic pathways. Metabolomic results indicated involvement of lipid pathways known for anesthetic effects on membrane function and alternate energy sources due to reduced glucose utilization. Key insights are revealed for potential mechanisms by which anesthetics block memory of the medical procedures.
Use Online Multi-Cloud Platform Lab with Intellectual Agents
Authors: Mkrttchia Vardan
Published: September 2016

One could argue that the traditional scheme of study needs to change. New forms of research should be based on mobility, interactivity and cooperation of the participants of the researching process. To this end, there should be new approaches in researching. Now they say about study-oriented researching without temporal and spatial boundaries, which requires the use of new research technologies – Triple H Avatar. Currently there is no software system that would realize the full intellectual tasks described above. The reason for this lies in the simplified model of learning, which is associated with the unification of the parameters of the model researcher and the study material. Note that even this approach requires considerable effort in the implementation of both local and remote versions.
Animal Actin Phylogeny and RNA Secondary Structure Study
Authors: Barik Bibhuti Prasad
Published: September 2016

Animal actin is a diverse and evolutionarily ancient protein. Actin genes and their corresponding protein sequences were used to infer phylogenetic affiliations. The study indicated that several species appear to be polyphyletic and several unrelated species appear to share the same clade. Consensus actin RNA secondary structures showed that the structural features of all forms were quite distinct and different from each other. This observation supports the phylogenetic inference in which similarly named species clustered together based on their lifestyles. Consideration of actin gene geneology and consensus RNA secondary structures could be used as a possible phylogenetic marker among diverse species of the animal kingdom for large scale data analysis. In-silico study revealed variations among the groups. The percentages of long disordered regions in proteins were found to be very high in all forms. Such findings suggest that the complexity and ability to adapt in diverse habitats by species may be due to higher percentage of disordered proteins.
A New Distributed Anonymization Protocol with Minimal Loss of Information
Authors: Kabou Salheddine , Benslimane Sidi Mohamed
Published: September 2016

Cloud computing represents a new business model which enables diverse benefits such as the sharing of computing resources containing personal information across multiple distributed and private databases. However, privacy and security concerns are a significant obstacle that is preventing the extensive adoption of this new technology. Anonymization is one of the solutions methods that can be used to preserve the privacy of data while still allowing the data to be used.. Most of the existing works use a k-anonymity model for preserving privacy for data subject that offers lower utility. Motivated by this, the authors develop a new distributed anonymization protocol to satisfy multiple data providers privacy requirements based on a k-concealment model that offers a higher utility with less generalisation. The experimental results show that their proposal protocol outperforms the commonly used protocols.
Do Collaborative Relationships in Supply Chain Pay-Off?
Authors: Kwon Ik-Whan G. , Hong Seock-Jin , Kim Sung-Ho
Published: September 2016

Collaborative relationship is said to foster sustainable supply chain operations. It is argued that relationship based supply chain produces financially tangible results in many areas of supply chain. The concept is based on transaction cost theory arguing that the final price is determined in the market by total cost. A collaborative relationship fosters trust that leads to lowering transaction cost and speed up time to market which creates “serial equity” rather than “spot equity”. Recent research on collaboration and supply chain performance seems to suggest tangible financial gains. Yet, no theoretical framework has been developed and empirical evidences have been lacking to support such hypothesis. A clearly defined theoretical framework and supportive empirical evidence between these two constructs are needed for future research in this area. This article attempts to articulate the theoretical foundation of collaborative relationship in supply chain and survey empirical results on financial gains reported in various research studies.
Improving Productivity
Authors: Fernando Yudi , Mathath Anas , Murshid Mohsen Ali
Published: September 2016

The role of robots is becoming substantial for industrial applications and business competitiveness. The purpose of this paper is to review robotic transformation concept and to investigate its business applications in the food industry. The robot transformation in food industry provided a robust support in raising business productivity, reduced cost and enhanced customer's loyalty, besides the food safety and quality. Its service in production systems for material handling and packaging operations is inevitable. Despite the importance of robotics in improving productivity, small scale food companies are often reluctant to invest in robotization of their operations. Since it involves high initial investment, maintenance and costs associated with training skilled employees for programming of robotics. Mainly, two points have raised concerns in the discussion of this paper. First, the robot technology has been enhanced to deliver services for the large scale food companies. Meanwhile, the experiences gained in the food service sector which implement robots can replace the human touch. At the end of this review, several solutions are recommended to shed light on the applications of the robot in the food industry.
Awareness Based Recommendation
Authors: Yamaguchi Tomohiro , Nishimura Takuma , Takadama Keiki
Published: September 2016

In Artificial Intelligence and Robotics, one of the important issues is to design Human interface. There are two issues, one is the machine-centered interaction design to adapt humans for operating the robots or systems. Another one is the human-centered interaction design to make it adaptable for humans. This research aims at latter issue. This paper presents the interactive learning system to assist positive change in the preference of a human toward the true preference, then evaluation of the awareness effect is discussed. The system behaves passively to reflect the human intelligence by visualizing the traces of his/her behaviors. Experimental results showed that subjects are divided into two groups, heavy users and light users, and that there are different effects between them under the same visualizing condition. They also showed that the authors' system improves the efficiency for deciding the most preferred plan for both heavy users and light users.
Venting Negative Emotions on Twitter and The Number of Followers and Followees
Authors: Al-Saggaf Yeslam , Utz Sonja , Lin Ruoyun
Published: September 2016

Do people who express negative feelings (loneliness, sadness) on Twitter gain or lose online contacts? To answer this question, the authors tracked the number of followers and followees of people who tweeted about loneliness or sadness twice; once when they expressed the negative feeling and a second time five months later. The authors compared the networks of those users with the networks of others who either simply retweeted tweets about loneliness/sadness or (re)tweeted about the corresponding positive feelings. People expressing loneliness in their tweets, as well as people expressing sadness in their tweets had smaller networks than people expressing feeling loved or happy. This effect held only for the original tweets, not retweets, and was – in case of sad/happy – stronger for the followees than the followers. Moreover, the authors found that people expressing loneliness also had smaller friends' networks five months later than the people expressing feeling loved, and that the networks of the people expressing sadness became even smaller during the following five months.
Análise documental: algumas pistas de pesquisa em psicologia e história
Authors: Lemos Flávia Cristina Silveira , Galindo Dolores , Reis Júnior Leandro Passarinho , Moreira Marcelo Moraes , Borges Amanda Gabriella
Published: September 2016

Este artigo tem o objetivo de abordar algumas contribuições da pesquisa documental na esfera de conversação de várias áreas e saberes. Uma partilha metodológica é colocada como pressuposto na descrição e na análise de documentos, na formação de arquivos, constituídos de acontecimentos que deixaram restos e marcas, vestígios no tempo e no espaço. O documento não é uma prova e sim uma pista de que algo ocorreu, mas não pode ser restituído em uma totalidade histórica, apenas ser colocado em narrativas com lacunas por meio do tratamento das fontes documentais pelos pesquisadores. As conversas entre saberes da Psicologia e da História são relevantes na análise histórico-documental. Este artigo assinala pistas para acesso e manejo dos arquivos, bem como desafios, dificuldades e relevância de estudos que usem as fontes históricas datadas e situadas espacialmente. A pesquisa documental auxilia na problematização de práticas sociais, da desnaturalização das mesmas e da ruptura com cristalizações.
Implicações Psicológicas das Lesões Esportivas em Atletas de Judô Paralímpico
Authors: Silva Juliana Cristina da , Brandão Maria Regina Ferreira , Bragança Jaime Roberto , Magnani Aline Iris Gil Parra , Polito Luis Felipe Tubagi , Zanetti Marcelo Callegari
Published: September 2016

Uma lesão isola o atleta de sua atividade, ou, pelo menos, coloca-o em condições de não poder levar a efeito, com toda sua amplitude, os requerimentos da execução esportiva. Por isso, as lesões esportivas, em qualquer parte do corpo em que ocorram, influirão, sempre, em toda a pessoa do desportista. Assim, compreender e reconhecer as implicações psicológicas das lesões desportivas é muito importante, porque cada lesão apresenta um cenário de ajuste psicológico ao trauma físico. O presente estudo teve como objetivo verificar as implicações psicológicas das lesões esportivas em atletas de Judô Paralímpico com deficiência visual, bem como o processo de reabilitação. Foram avaliados 10 atletas, de ambos os sexos, com média de idade de 28,5 (±7,25) anos, por meio de uma entrevista semiestruturada composta por 13 perguntas formuladas pelos pesquisadores. As respostas às entrevistas foram gravadas e, posteriormente, transcritas e analisadas à luz da análise do discurso. Os resultados mostraram sentimentos de medo, frustração, tristeza e pessimismo frente à lesão, bem como impaciência pelo retorno à prática esportiva. Na etapa de reabilitação, alguns atletas mostraram preocupação em não conseguir executar movimentos antes realizados. Já no retorno às atividades esportivas, apontaram medo e insegurança em ter uma nova lesão. Esses resultados levam a concluir que as respostas psicológicas frente aos traumas físicos são determinadas por um processo dinâmico de avaliação cognitiva, por parte do atleta, acerca da situação da lesão e de outros fatores relevantes. Ele avalia a intensidade e os efeitos da lesão e responde emocional e comportamentalmente a ela.
Conflitos conjugais em casamentos de longa duração: motivos e sentimentos
Authors: Costa Crístofer Batista da , Falcke Denise , Mosmann Clarisse Pereira
Published: September 2016

Os conflitos conjugais constituem um fenômeno complexo que têm repercussões na saúde física e mental dos cônjuges, entretanto ainda é pouco estudado no contexto nacional e, especialmente, em casamentos de longa duração. Objetivou-se identificar e comparar os motivos de conflitos conjugais, assim como compreender os sentimentos associados aos mesmos em casamentos de longa duração. Trata-se de um estudo misto, exploratório e sequencial. Na etapa quantitativa, 200 indivíduos responderam à escala de conflito conjugal e, na qualitativa, nove pessoas participaram de um grupo focal. Os dados quantitativos foram submetidos à análise de comparação de médias, e os qualitativos à análise de conteúdo. Os resultados apontaram a concordância dos participantes de que os conflitos fazem parte da conjugalidade e podem ser construtivos ao casamento. Os motivos de discórdia encontrados foram os filhos, as experiências nas famílias de origem, as finanças, as diferentes características, as preferências de cada parceiro e o tempo para ficar juntos. Identificou-se também que os sentimentos dos cônjuges no decorrer das situações de conflito interferem em sua resolução. Estudos com casais recém-casados e em diferentes etapas do ciclo vital familiar poderiam contribuir para ampliar a compreensão do tema em questão.
POLÍTICAS DE SUBJETIVAÇÃO NO TRABALHO: DA SOCIEDADE DISCIPLINAR AO CONTROLE
Authors: Mansano Sonia Regina Vargas , Carvalho Paulo Roberto de
Published: September 2016

As mudanças sociais e históricas que vimos acontecer de maneira marcante no final do século XX e início do XXI mostram que estamos diante de modos de subjetivação mutantes, os quais mantêm conexões diretas com a atividade produtiva. Nesse sentido, política e subjetividade são dois conceitos que caminham lado a lado quando são analisadas as relações de trabalho que colocam em cena a reinvenção dos modos de viver e trabalhar. No presente estudo teórico, será realizada uma aproximação entre os conceitos de política e de subjetivação, tendo como referência a emergência e expansão do denominado trabalho imaterial. Para tanto, o artigo foi dividido em dois momentos. Primeiro, será realizado um resgate histórico sobre a política de subjetivação que vigorava no momento histórico que Foucault caracterizou como disciplinar. Em seguida, serão descritas as transformações históricas que Deleuze assinalou sob a denominação de sociedade de controle. Diante desses dois cenários, que se mesclam na atualidade capitalista, serão percorridas as seguintes questões: Como o trabalhador se constitui histórica e politicamente como sujeito na sua prática laboral? Quais componentes subjetivos se atualizam no contexto produtivo do capitalismo avançado? Quais políticas de subjetivação são inventadas e colocadas em circulação pelos trabalhadores? Ao final do estudo, serão discutidos os desafios que atualmente estão colocados para o trabalhador que constantemente transita entre as duas políticas de subjetivação abordadas.
REPRESENTAÇÕES MATERNAS NO CONTEXTO DO HIV: GESTAÇÃO AO SEGUNDO ANO DA CRIANÇA
Authors: Faria Evelise Rigoni , Piccinini Cesar Augusto
Published: September 2016

O estudo investigou a relação mãe-bebê no contexto do HIV, da gestação ao segundo ano da criança, a partir das representações maternas. Participaram quatro mães soropositivas, entre 19 e 39 anos, entrevistadas na gestação e aos 3, 12 e 24 meses da criança. Análise de conteúdo qualitativa examinou os relatos maternos com base em duas categorias de representações: sobre si mesma e sobre o bebê. Os resultados indicaram que a relação mãe-bebê foi acompanhada de satisfações e desafios associados à maternidade, ao desenvolvimento infantil e à convivência com HIV. As representações sugeriram, inicialmente, um bebê vulnerável e uma mãe com sentimentos de culpa, temendo o preconceito e o estigma associado à infecção. Ao longo do tempo, as representações indicaram uma criança fortalecida e uma mãe mais segura frente à infecção e à maternidade. Preocupações com o HIV foram menos enfatizadas diante dos desafios impostos pelo desenvolvimento infantil, sobretudo entre mães que aceitavam o diagnóstico e focavam o seu enfrentamento.
POLÍTICAS DE RESISTÊNCIA PELO ENCANTAR: O BRINCAR NA CULTURA POPULAR
Authors: Moreira Andressa Urtiga , Silva Daniele Nunes Henrique
Published: September 2016

Historicamente, a psicologia do desenvolvimento tem privilegiado o brincar na infância, contudo temos advogado que o brincar é uma atividade ontológica que se estende ao longo de toda a vida. Assim, no presente artigo, discutimos a brincadeira no contexto da cultura popular, tendo como recorte sujeitos adultos que se autodenominam brincantes. Por essa via, investigamos a construção de sentidos na e da constituição dos/as brincantes à luz da psicologia histórico-cultural, proposta por Lev Vigotski. Recorremos, também, aos estudos de Mikhail Bakhtin acerca da cultura popular, discutindo o brincar como uma atividade situada no entrever entre arte e vida. Ademais, evidenciamos e refletimos sobre algumas narrativas de brincantes, focalizando o caráter de resistência da cultura popular por uma lógica peculiar: a do encantamento. Enfatizamos, por fim, a necessidade política de reconfiguração das noções ainda vigentes sobre o brincar, a partir de um olhar mais sensível às expressões populares e à própria constituição humana.
FATORES DE RISCO PARA A MATERNIDADE ENTRE ADOLESCENTES VIVENDO COM HIV
Authors: Vescovi Gabriela , Castoldi Luciana , Pereira Marco Daniel , Levandowski Daniela Centenaro
Published: September 2016

O presente estudo buscou identificar os fatores de risco para a vivência da gestação e maternidade em jovens vivendo com HIV. Realizou-se um estudo qualitativo de casos múltiplos com três jovens HIV+ (17 a 19 anos), primíparas, com bebês de 4 a 6 meses, recrutadas em serviços especializados de Porto Alegre, Brasil. Os dados foram coletados por meio de entrevista semi-estruturada e questionários de apoio social e adesão ao tratamento. Identificaram-se como fatores de risco para maiores dificuldades na vivência da gestação/maternidade: descoberta da soropositividade durante a gestação, baixa adesão ao tratamento antirretroviral e não realização desse tratamento pelo parceiro, além de dificuldades enfrentadas nos serviços de saúde. Os achados indicam a necessidade de busca ativa de adolescentes gestantes/mães que vivem com HIV e de inclusão do companheiro no seu acompanhamento de saúde, a fim de minimizar o impacto desses fatores de risco e facilitar a transição para a maternidade.
O DESVELAR DE VIOLAÇÕES DOS DIREITOS HUMANOS EM SERVIÇOS RESIDENCIAIS TERAPÊUTICOS
Authors: Bressan Vânia Regina , Marcolan João Fernando
Published: September 2016

O objetivo do estudo foi analisar as práticas de assistência aos moradores de sete Serviços Residenciais Terapêuticos de município de Minas Gerais e suas concepções, segundo as propostas da reforma psiquiátrica, da Política de Saúde Mental brasileira e de outros autores. Foram entrevistados 15 cuidadores por meio de questão disparadora e questões relacionadas à assistência e funcionamento do Serviço Residencial Terapêutico. As entrevistas foram gravadas, transcritas e categorizadas em temas. Os dados mostraram práticas de violações de direitos humanos: violência física, verbal, psicológica e sexual e negligência de cuidados por parte de cuidadores e responsáveis técnicos pelos serviços. Essas práticas mostraram-se influenciadas pela concepção social da loucura, associada à falta de compreensão e inteligência, de autonomia, à ausência de razão, à exclusão, à discriminação e ao isolamento. Verificamos falta de capacitação e educação permanente aos cuidadores e de acompanhamento e fiscalização federal, estadual e municipal das práticas que ocorriam nesses serviços. A associação que gerenciava os serviços não se comprometeu com a qualidade da assistência, a Secretaria de Saúde do Município foi omissa e não verificamos  o suporte de responsáveis técnicos dos serviços e equipe do Centro de Atenção Psicossocial. Há falta de investimento em intervenções para mudança da concepção social da loucura pelo movimento da reforma psiquiátrica. Identificamos, ainda, lacuna na legislação sobre os serviços residenciais terapêuticos. Esses serviços pesquisados mantinham práticas manicomiais e características de instituição total, contrárias às propostas da reforma psiquiátrica e da Política Nacional de Saúde Mental.
Synthesis, Structure-Property Relationships of DOPO-Phosphonamidates and their Flame Retardant Application
Authors: Yu Bin , Lo Siu Ming , Hu Yuan
Published: September 2016

Three bis-9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO)-phosphonamidates were successfully synthesized and well characterized. The influence of these DOPO-phosphonamidates on fire performance of epoxy resin was comparatively investigated. UL-94 tests results of various EP formulations indicated that DOPO-phosphonamidates exhibited superior fire performance. The EP composite containing extremely low loading of PiP-DOPO (0.5 wt% P) may pass the UL-94 V-0 rating, while EDA-DOPO and DDM-DOPO made the EP pass the V-1 rating. Thermal degradation results of the DOPO-phosphonamidate indicated the higher thermal stability with the initial degradation temperature over 340 °C under nitrogen. Moreover, only a very small residue was observed at 800 °C for DOPO-phosphonamidates and all EP formulations under air and nitrogen, indicating the limited condensed phase interaction. DDM-DOPO with richer aromatic structures presented the highest thermal stability and left more char residues. Large amount of gas products during the combustion of PiP-DOPO rapidly released in a short time, promoting flame inhibition, which may explain its superior flame retardant efficacy among all the DOPO-phosphonamidates investigated in this study.
Application of Metamaterial Absorber in Antenna Stealth
Authors: Tian Chun Sheng , Zhou Kai , Guan You Lin
Published: September 2016

In order to improve the stealth performance of antenna, a metamaterial absorber with high absorption, polarization-insensitive and wide angle based on the electromagnetic resonance is designed. Using of ultra-thin characteristic of absorber, they are attached to the microstrip antenna to reduce its radar cross section. The simulation results show that the new microstrip antenna’s radiation performance remains unchanged compared with conventional microstrip antenna and it has obvious RCS reduction in its working band. While the maximum reduction can reach 28dB at working frequency, and the in-band reduction of antenna is above 3dB. This indicates that the absorber can be used for antennas’ in-band stealth.
Effective Catalytic Deoxygenation of Waste Cooking Oil over Nanorods Activated Carbon Supported CaO
Authors: Abdulkareem-Alsultan Ghassan , Asikin-Mijan N. , Taufiq-Yap Yun Hin
Published: September 2016

Under nitrogen atmosphere, waste cooking oil (WCO) was deoxygenated in semi-batch experiments by using the nanorods of phosphate-activated carbon, which is derived from walnut shell and promoted by CaO as catalyst at 350 °C. The deoxygenation reaction showed high activity (> 48% hydrocarbon yield) and high selectivity towards decarboxylation/decarbonylation (deCOx) reactions via exclusive formation of green diesel C15 fraction (> 60%). The high activity and high selectivity were attributed to the good physicochemical characteristics of the catalyst, including improved metal dispersion, high surface area and high basic properties. Overall, this study demonstrates CaO/AC catalytic deoxygenation as a promising approach to produce liquid green diesel C15 from WCO under hydrogen-free atmosphere.
Thermal and Mechanical Properties of PLA/BN/BR Ternary Composite Films
Authors: Baethu Arper , Pumchusak Jantrawan
Published: September 2016

In this research, the effects of boron nitride (BN) and polybutadiene (BR) on thermal and mechanical properties of polylactic acid (PLA) composite films were studied. PLA thin film in the thickness of less than 0.2 mm was fabricated using the solvent casting method. The loadings of BN and BR of 0-7 wt% were applied to the PLA matrix. The morphologies of composite films were characterized by scanning electron microscopy (SEM). The thermal and mechanical properties were also investigated. It was found that the addition of BN and BR can improve the thermal properties of PLA composite films. PLA/BN3%/BR5% ternary composite films provided the higher thermal properties, tensile strength and Young’s modulus, compared to PLA/BN1%/BR5% ternary composite films.
Cement-Lime Plaster with PCM Addition – A Perspective Material for Moderation of Interior Climate
Authors: Fořt Jan , Trník Anton , Pavlík Zbyšek
Published: September 2016

The interior temperature and relative humidity are important parameters in order to achieve healthy, comfortable, sustainable, and energy efficient indoor environment. In this paper, cement-lime plaster with PCM addition is studied as a perspective material for moderation of indoor temperature and humidity fluctuations. Commercial dry plaster mixture is modified by PCM addition based on the water dispersion of polymer microencapsulated paraffinic wax. The dosage of PCM is 4, 8, and 12 mass% related to the dry mass of plaster mixture. For the developed plasters, basic physical, thermal and hygric properties are measured. Incorporation of PCM into the cement-lime matrix lead to the substantial increase of the heat storage capacity in dependence on temperature as well as to the improvement of moisture buffer value of the newly developed composites which brings efficient way to reduce daily moisture variations. The obtained data can find use in attaining the higher indoor climate stability with lower energy consumption and operational cost.
X-Ray Diffraction Characteristics of Kovar Alloy and Al2O3 Ceramics
Authors: Gao Qi Le , Zhang Yi Liang , Zhou Jun Ming , Peng Jia Gen , Hu Shou Liang
Published: September 2016

In order to study the residual stress of Al2O3 ceramics and kovar alloy after brazing, this article conducted both X-ray diffraction and strain gauges measurement. Using Stress diffractometer and constant strength beam calibration method to examine the x-ray diffraction characteristics of these two materials. And compare measured results and theoretical results. It is shows that the Al2O3 ceramics has two obvious diffraction peaks in 140°~170°, where the diffraction peak at 2θ=153° can reflect the changes of stress more accurately then one at 2θ=146°. For kovar alloy, there is only one diffraction peak at 2θ=149° in range of 140°~170° and it has good linear relationship with stress.
Total and Partial Photon Interactions of BaSO4-Na2O-B2O3-SiO2
Authors: Chanthima Natthakridta , Kaewkhao Jakrapong , Sarachai Sunisa , Sangwaranatee Narong , Sangwaranatee Nisakorn W.
Published: September 2016

The radiation parameters of barite sodium silicoborate glass (BaSO4:Na2O:SiO2:B2O3) with different concentration of barite (BaSO4) were studied. The mass attenuation coefficient (μ/ρ), effective atomic number (Zeff) effective electron densities (Ne,eff) and half value layer (HVL) have been calculated by theoretical approach using WinXCom program in the energy range of 1 keV to 100 GeV. The results of these parameters are show graphically for total and partial photon interaction. It was found that the Zeff show discontinuous jumps related to absorption edges and dominance photoelectric effect at low energies, pair production have two types which are nuclear and electron field and its slightly increased with increasing photon energies. The variation of Ne,eff was related to the value of Zeff. The half value layer (HVL) of glasses were compared with commercial window and some standard shielding concretes which observed that the value of 20 mol% BaSO4 has lower than commercial window, ordinary and hematite-serpentine concretes. These results showed that glass sample is promising radiation shielding materials.
Physico-Mechanical Properties of Starch-Based Nanocomposite Film Incorporated with Hydrothermally Synthesized Zinc Oxide Nanoparticles
Authors: Andiyana Yandi , Suyatma Nugraha Edhi , Suliantari Suliantari
Published: September 2016

Zinc oxide nanoparticles (ZnO-NPs) were successfully prepared by hydrothermal method at low temperatures (80°C) for 2 hours using zinc nitrate as starting materials. The average size of hydrothermally synthesized ZnO-NPs were comparable with commercial one as confirmed by Particle Size Analyzer (PSA). The incorporation of hydrothermally synthesized ZnO-NPs (0.5% and 1%, w/w) and glycerol as plasticizer (20%, w/w) into tapioca starch film significantly reduce water absorption capacity and water vapor transmission rate while increasing tensile strength and elongation at break of the composite film. These results suggest that hydrothermally synthesized ZnO-NPs have the potential as nanofiller to improve the physical and mechanical properties of biobased film.
Adsorption of Direct Red 80 Dye from Solution by Sugarcane Bagasse and Modified Sugarcane Bagasse as Adsorbents
Authors: En-Oon Phatthraporn , Sansunon Ponsuparat , Piyamongkala Kowit
Published: September 2016

The sugarcane bagasse and modified sugarcane bagasse with 1.0 M H2SO4 were used as adsorbents for removal of the direct red 80 in batch adsorption process. The effect on the initial concentration of the direct red 80, at 215.8 - 1028.9 mg/L, was thoroughly investigated in batch adsorption system. It was fount that the point of zero charge of sugarcane bagasse and modified sugarcane bagasse were pH 4.9 and 2.0, respectively. The adsorption capacity increased with initial concentration of direct red 80. The experimental results showed that adsorption capacity onto 1.0 g of sugarcane bagasse and modified sugarcane bagasse for direct red 80 initial concentration 1,028.9 mg/L were 4.2 and 28.9 mg/g, respectively. The Langmuir and Freundlich adsorption isotherms were applied to describe the direct red 80 uptake, which could be described by Langmuir isotherm onto both adsorbents.
Synthesis of Carbon-Supported Metal Catalysts by HTC and Electroplating Processes from Cattail Flower
Authors: Gunpum Wachiraporn , Faungnawakij Kajornsak , Viriya-Empikul Nawin , Eiad-Ua Apiluck
Published: September 2016

Carbon-supported metal (nickel) catalysts has been synthesized from Cattail flower (CF) by two stage processes: hydrothermal carbonization (HTC) and electroplating technique. In the first stage, CF has been transformed in the HTC process with optimized condition at 180°C for 8h. Then the samples have been compressed into the 5 mm-pellet and calcined under nitrogen atmosphere at 900°C for 2 h to active-surface carbon which produced high surface area and good conductivity. In the second stage, the products obtained from HTC were subjected to produce the carbon-supported metal catalysts. Due to the good electrical conductivity of the carbon from HTC process, the metal can be effectively deposited on the carbon surface. Various parameters such as temperature of solution (40-60°C) and voltage (3.0-5.0V) have been studied. The results indicated that the electroplating process of solution temperature 50°C under applied voltages at 4.0V were the optimal conditions produced to mostly metallic phase.
Production of γ-Valerolactone from Methyl Levulinate via Catalytic Transfer Hydrogenation on Nickel-Copper Oxide Catalyst
Authors: Tanwongwal Worapak , Kuboon Sanchai , Kraithong Wasawat , Eiad-Ua Apiluck
Published: September 2016

γ-Valerolactone (GVL) is successfully produced via catalytic transfer hydrogenation from methyl levulinate on nickel copper oxide catalysts with the comparable result to that of Raney-nickel. This catalyst is prepared at lower temperature (lower than 1000oC) and pretreatment is not required before its use. Among different calcination temperature, Ni-Cu-O which synthesis at 700oC shows the best catalytic performance with 100% methyl levulinate conversion and more than 95% GVL yield and characterization result was shows this calcination temperature was affect catalyst to highest crystallization and surface area. The study of atomic ratio effect indicates that nickel-copper oxide which had nickel oxide more than copper oxide is better for this reaction.
TiO2 Powder Synthesized via the Solvothermal Method and Enhanced Photocatalytic Degradation of Methomyl
Authors: Jansanthea Pongthep , Chomkitichai Weerasak , Ketwaraporn Jiraporn , Pookmanee Pusit , Phanichphant Sukon
Published: September 2016

TiO2 powder was synthesized via the solvothermal method and characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS). Single phase anatase was obtained without calcination steps. The particle was irregular in shape with average particle size of 1.0 μm. The characteristic X–ray radiation of element was show titanium at 4.510 keV and 4.931 keV and oxygen at 0.523 keV. The photocatalytic degradation of methomyl in aqueous solution over TiO2 powder under UV irradiation was determined by UV-Vis spectroscopy. The influence of the amount of TiO2 powder for photocatalytic degradation of methomyl and rate constant were determined. The optimum condition for photocatalytic degradation of methomyl over TiO2 powder was obtained at 0.05 g.L-1 for the amount of TiO2 powder in 60 min. The degradation rate constant at the optimum condition was 0.0243 min-1.
Effects of ZnO Addition on Fe2O3/Al2O3 Oxygen Carriers on CH4 Reduction for Chemical Looping Combustion
Authors: Thongsermsuk Sujinda , Chalermsinsuwan Benjapon , Kuchonthara Prapan , Piumsomboon Pornpote
Published: September 2016

Fe2O3/Al2O3/ZnO oxygen carriers with small content ZnO (5 wt% to 10 wt%) were prepared by physical mixing method and were evaluated its capability as an oxygen carrier in a chemical looping combustion. The combustion was conducted by using CH4 as a fuel gas. The reduction process of Fe2O3/Al2O3/ZnO oxygen carrier was carried out in a fixed bed reactor. The solid reduction products were characterized by X-ray diffraction (XRD) and Scanning Electron Microscope with EDS Attachment (SEM-EDS). The results show that the reactivity of Fe2O3/Al2O3/ZnO oxygen carriers is greater than that of Fe2O3/Al2O3 which is implied the synergetic effect between ZnO and Fe2O3. XRD results show that the iron oxide in the oxygen carriers is reduced to metallic iron. SEM-EDS also shows that the iron agglomeration is prevented. Consequently, the suitable content of ZnO in oxygen carriers is ranged from 5 wt% to 10 wt%.
Study on the Performance of Orthodontic Self-Drilling Correction Screw of Ti6Al4V and Stainless 316L
Authors: Do The Vinh , Hsu Quang Cherng , Chen Po Hung , Chen Yu Liang
Published: September 2016

In this research, the performance of orthodontic self-drilling correction screw of Titanium alloy (Ti6Al4V) and stainless steel (Stainless 316L) was analyzed by using the finite element method. SolidWorks software was employed to design the 3D models. The dimensions and geometrical parameters of the mini-screw according to ASTM F543-07. The analysis was conducted by using Ansys software. The biomechanical test is carried out that includes the static bending test and the torsion test. Based on the analysis of the results of the tests, the initial stability of the stainless steel screw is slightly higher than the titanium alloy screw. However, in prolonged stress results, attention to interactions with biological organisms from the medical perspective, the titanium bone screw have more advantages. In terms of the maximum load, the titanium alloy screws are better than the stainless steel screws. In terms of stiffness, the stainless steel screws proved superior to the type of titanium alloy. The orthodontic self-drilling correction screw saving of about 30% of the torque and more stable compared to the nonself-drilling type.
Effect of Porosity on Residual Stress of 2024-Aluminum GTAW Specimen
Authors: Poolperm Pattarawadee , Nakkiew Wasawat
Published: September 2016

Aluminum alloys are used widely in many applications due to its low in density which can lead to a lightweight product. A high percentage of Cu in the chemical composition of the 2024 aluminum alloys helps withstand the occurrence of corrosion as well. Thus, aluminum alloy grade 2024 is used as a material for several parts in aircraft and spacecraft components, (e.g. the body of commercial airplanes), as well as parts in many other applications. Gas Tungsten Arc Welding (GTAW) is used widely in joining material parts together. Inappropriate welding parameters usually cause problems such as porosity in the welding. The occurrence of porosity is undesirable in welding because it can affect the strength of the welding area as well as other properties. Tensile residual stress near the surface of the material expedites the fatigue crack initiation. The relationship of porosity and residual stress for GTAW parts was very limited in literatures. Therefore, the objective of this research was to investigate the relationship of porosity to the occurrence of residual stress after the welding process. Full factorial design of experimental technique was used for setting up welding conditions of the GTAW. The specimen with highest porosity was selected for further analysis of its effect on residual stress. Porosity was analyzed by the radiographic testing (RT) and the residual stress was measure by X-ray diffraction (XRD) using sin2 method. The results showed that the highest porosity in the welded bead was found at the current of 130 A, the welding speed of 210 mm./min., and the wire feed rate of 700 mm./min. The results also suggested that lower current and welding speed caused an increase in porosity. The residual stress results on both longitude and transverse directions showed tensile residual stress at locations around the welded bead area.
Effect of Precipitate on Microstructure Evolution and Hardness of Al-Cu Alloy during Torsion Deformation
Authors: Khamsuk Sunisa , Park Nokeun , Terada Daisuke , Tsuji Nobuhiro
Published: September 2016

The effect of precipitate on microstructure evolution and hardness of Al-Cu alloy during torsion deformation has been investigated, by comparing the evolution of microstructure in aged Al-2wt.% Cu alloy with commercial purity aluminum (1100Al). The microstructure evolution is studied by Transmission Electron Microscopy and Electron Backscatter Diffraction, and hardness is measured using Vickers hardness measuring instrument. It is found that the presence of precipitate enhance the grain refinement and hardness of Al-Cu alloy. By applied equivalent strain of 3.26, the (sub) grain size of 86 nm is achieved. In contrast, the presence of precipitate is found to be inhibiting the development of high angle grain boundary.
Direct Measurements of Magnetocaloric Effect in a Single Crystalline Ni2.13Mn0.81Ga1.06 Heusler Alloy
Authors: Khovaylo Vladimir , Skokov Konstantin , Taskaev Sergey , Karpenkov Alexey , Karpenkov Dmitriy , Airiyan Eduard
Published: September 2016

Magnetocaloric effect (MCE) in the vicinity of first order martensitic transformation and second order magnetic transition in a single crystalline Ni2.13Mn0.81Ga1.06 Heusler compound was studied by a direct method. The obtained results revealed that, for the applied magnetic field strength μ0H = 1.9 T, MCE is irreversible in the vicinity of the first order martensitic transformation only when the MCE measurements are performed under cooling protocol. Plot of the experimentally measured adiabatic temperature change ΔTad as a function of temperature T indicated that ΔTad has a negligible benefit from the magnetic field-induced conversion of the high-temperature austenitic phase into the low-temperature martensitic phase and is mainly determined by the paraprocess of the austenitic phase around both direct and reverse martensitic transformations.
Influence of Steel Strip-Feeding Process on Density and Segregation of Casting Ingot
Authors: Zhao Su , Wei Dong Lai , Xu Jian Hui , Chen Hui , Zhang Li
Published: September 2016

The effect of steel strip-feeding ratio and superheat degree of molten steel on density and segregation of casting ingot is investigated by an original position analysis. It indicates that under the same degree of superheat condition, with the increase of feeding ratio, the average density of the casting ingot increases and the central segregation of the ingot decreases. Under the same feeding ratio conditions, the density and the central segregation increase with the increase of the degree of superheat.
Fine Blanking Technology Optimization of Front End Cover of Timing System for Compressed
Authors: Li Xin Yu , Zhu Chun Dong , Zhu Yan Chang
Published: September 2016

Front cover is an important part of the car timing system, it is also an important parts of the engine to ensure the smooth flow.The quality of end cap is directly related to the normal and efficient operation of the engine.In this paper, through the research of the fine blanking process of the front cover of the timing system, a new type of fine blanking die is designed to improve the service life of the die and its parts.The influence rules of the process parameters such as the back top force, the counter pressure and the corner radius on punching smooth zone and the life of the mold, are analyzed by using the finite element software and a series of optimized process parameters are obtained after this.
Influence of Sintering Temperature on Electrical Properties of Modified-PZT Piezoelectric Ceramics
Authors: Jaita Pharatree , Sanjoom Ratabongkot , Kruea-In Chatchai , Tunkasiri Tawee , Rujijanagul Gobwute
Published: September 2016

In this research, the effects of sintering temperature on phase structure, densification, microstructure, mechanical and electrical properties of modified-PZT ceramics were investigated. All ceramics were prepared by a conventional mixed oxide amend sintered at various temperatures from 1150 - 1250°C. XRD pattern indicated that completely solid solution occurred for all samples and the ceramics exhibited a single perovskite without any secondary phases. At lower sintering temperature, the dominant phase was rhombohedral while tetragonal phase became dominant at higher temperature. Grain size tended to increase with increasing sintering temperature. The dielectric, ferroelectric and piezoelectric properties were also increased with increasing sintering temperature. In addition, the highest low field d33 of 620 pC/N of was observed for the 1250°C sample.
An integrated geological, geochemical, and geophysical investigation of uranium metallogenesis in selected granitic plutons of the Miramichi Anticlinorium, New Brunswick
Authors: Hassan H H , McAllister A L
Published: September 2016

Integrated geological, geochemical, and geophysical data for the posttectonic granitic rocks of the North Pole, Burnthill, Dungarvon, Trout Brook, and Rocky Brook plutons and surrounding areas were examined to assess their potential for uranium mineralization.
Geological, geochemical, and geophysical criteria that are thought to be useful guides for uranium exploration were also established for the host granites. The granitic plutons were emplaced discordantly, late in the tectonomagmatic sequence and at shallow depths within the metasedimentary rocks of
the Miramichi Anticlinorium. Geochemically, the host granites are highly evolved (Si02 > 75 wt. %), peraluminous and have strong similarities with ilmenite-series 'S-type' and 'A-type' granitoids. Uranium occurrences are spatially and perhaps temporally associated with late-phase
differentiates of the plutons where elevated levels of other lithophile elements such as Sn, W, Mo, and F were also detected. Geophysically, the granitic plutons are associated with distinctively high aeroradiometric eU, eTh, and K anomalies that coincide with strong negative Bouguer anomalies and
low magnetic values. Conceptual models involving magmatic and hydrothermal processes have been adopted to explain the concentration of uranium and associated metals in the granitic plutons.
Quaternary geology of the Inman River area, Northwest Territories
Authors: St-Onge D A , McMartin I
Published: September 2016

The Inman River area south of Dolphin and Union Strait includes lowlands, scarps, and tableland on nearly horizontal strata of Palaeozoic carbonates, mostly dolomite, north of the Middle to Late Proterozoic Coppermine Homocline rocks. The Late Quaternary, mostly
Wisconsinan, sediments which unconformably overlie the dolostone are associated with a spectacular array of landforms including several types of moraines, a wide variety of drumlins, eskers, kames, and flights of marine beaches. Varying flow patterns resulting from increased topographic control
during the waning phases of glaciation are reflected in the orientation of moraine ridges, drumlins, grooves, and striae. Periglacial processes are responsible for a series of landforms including the unique Harding River rock pingo, numerous rock mounds, blowout and dune fields, as well as pattern
ground.
Concurrently with ice retreat, marine incursion imposed its own constraints on sedimentation and erosion patterns. Initially, marine basins confined between ice lobes and uplands received vast quantities of sediments entrained by meltwater from stagnant ice on upland surfaces and from subglacial
streams debouching at ice fronts calving into the ocean. This episode of sedimentation was of short duration; the disappearance of stagnant ice brought it to a close.
Late Wisconsinan ice started to melt back from the eastern slopes of the upland just west of Bluenose Lake around 12 000 BP. Deglaciation from this position to Coronation Gulf has been divided into four phases defined by distinct flow patterns identified from drumlins, flutings, and striae, and by
ice frontal positions marked by morainic ridges and other ice contact features.
Toarcian (Early Jurassic) ammonoids from western North America
Authors: Jakobs G K
Published: September 2016

Toarcian (Lower Jurassic) sedimentary rocks outcrop in western North America from southern Alaska to Nevada. The tectonic complexity of western North America, and of the Canadian Cordillera in particular, has, until recently, hampered biostratigraphic studies of
this interval.Work in the Queen Charlotte Islands has identified one of the best preserved Toarcian sequences in western North America. Toarcian strata in the Queen Charlotte Islands have yielded a well preserved and diverse ammonite fauna that provides a framework for a regional ammonite zonation
for western North America. Other localities in western North America, particularly in southern Alaska and northwestern British Columbia have provided additional material which has contributed to the development of an ammonite zonation.
A diverse ammonite fauna has been collected from the Toarcian of western North America. Early Toarcian genera include Dactylioceras, Tiltoniceras, Taffertia, Cleviceras, and Hildaites. Middle Toarcian genera include Lytoceras, Peronoceras, Collina, Cleviceras, Harpoceras, Pseudolioceras,
Polyplectus, Leukadiella, Paroniceras, Mercaticeras, Merlaites, Pseudomercaticeras, and Phymatoceras. Late Toarcian genera include Polyplectus, Grammoceras, Podagrosites, Pleydellia, Dumortieria, Phymatoceras, Yakounia, Sphaerocoeloceras, and Hammatoceras.