bluuebunny/crossref_metadata_2025 huggingface dataset:
Methods in Statistical Genomics: In the Context of Genome-Wide Association Studies
Authors:   RTI International, Cooley Philip Chester
Published: September 2016

The objective of this book is to describe procedures for analyzing genome-wide association studies (GWAS). Some of the material is unpublished and contains commentary and unpublished research; other chapters (Chapters 4 through 7) have been published in other journals. Each previously published chapter investigates a different genomics model, but all focus on identifying the strengths and limitations of various statistical procedures that have been applied to different GWAS scenarios.
Factors associated with HBV Virological Breakthrough
Authors: Sheppard-Law Suzanne , Zablotska-Manos Iryna , Kermeen Melissa , Holdaway Susan , Lee Alice , Zekry Amany , Dore Gregory J , George Jacob , Maher Lisa
Published: September 2016

Background

Little is known about non-adherence to HBV therapy. This study aimed to investigate the relationship between self-reported missed days of antiviral therapy and HBV virological breakthrough and factors associated with virological breakthrough.

Methods

A cross-sectional survey of 211 HBV patients receiving oral antiviral therapies was undertaken at three tertiary hospitals in Sydney, Australia. Associations between 0 to >6 missed days in the last 30 days and virological breakthrough (defined as >10-fold rise in serum HBV DNA above nadir or after achieving virological response in the last 12 months) were examined. Logistic regression analyses determined the number of missed days most strongly associated with virological breakthrough and the associated factors. We report odds ratios (ORs) and relative risks (RRs).

Results

Of the 204, 32 participants (15.6%) had quantifiable HBV DNA levels (>20 IU/ml); 15 (46.8%) of them experienced virological breakthrough. Participants reported never missing medication ( n=130, 63.7%) or missing 1 day ( n=23, 11.3%), >1 day ( n=23, 11.3%), 2–6 days ( n=15, 7.3%) and >6 days ( n=13, 6.4%). The most discriminating definition of non-adherence was missing >1 day of medication (RR=8.3; OR=10.2, 95% CI 3.1, 33.8, receiver operating characteristic curve 0.76). Factors independently associated with virological breakthrough included non-adherence (OR=9.0, 95% CI 2.5, 31.9) diagnosed with HBV ≤14 years (OR=5.3, 95% CI 1.0, 26.2) and age ≤47 years (OR=5.4, 95% CI 1.1, 26.9).

Conclusions

Results provide an evidence-based definition of non-adherence to inform clinical practice and provide a basis for key patient education messages. Closer monitoring of groups at risk of viral breakthrough is required.
Uso de TIC`s en circuitos de corriente continua: propuesta didáctica y evaluación.
Authors: Enrique Claudio Mario
Published: September 2016

Este trabalho tem como objetivo descrever e analisar os resultados de uma proposta educacional baseadana utilização das Tecnologias de Informação e comunicação (TIC´s) em circuitos elétricos. Na experiência écomprovada experimentalmente a lei de Ohm, e a obtenção da resistência equivalente é deduzida para as disposiçõesem série e em paralelo. Em seguida, são analisados de forma descritiva as escritas dos relatórios do trabalho prático,com a intenção de vislumbrar se o a aprendizagem foi significativo. Os estudantes investigados pertenceram àscarreiras de Engenharia da Universidad Tecnológica Nacional Facultad de Regional Santa Fé, durante os anos 2012 -2013. Os resultados encontrados indicam que os efeitos sobre a aprendizagem foram signficiativos, porém, poderiamser melhores se os alunos tivessem passado por um treinamento no uso de TIC`s antes de realizar a atividadeproposta.
Propuesta de Guía Metodológica para auditar el estado de las Tecnologías de Información y las Telecomunicaciones - TIC - en las entidades públicas que fiscaliza la Contraloría General de Antioquia (Colombia)
Authors: Garcia Ospina Nancy Estella , Cortés Elkin Mauricio Gutiérrez
Published: September 2016

En este trabajo se presenta una propuesta de guía metodológica para auditar el estado de las Tecnologías de Información y las Comunicaciones  - TIC -  en las entidades públicas que fiscaliza la Contraloría General de Antioquia. La propuesta se motiva en la carencia de una guía en la evaluación de tecnologías dentro del proceso auditor que posee la CGA, y se apoya teóricamente en varios insumos como son: COBIT, ITIL, AUDITE, políticas públicas como: Gobierno en Línea, VIVE DIGITAL, Ley Antitrámites, entre otros. La consolidación de éstos temas en una guía como la que se propone, la convierte en un instrumento valioso que puede ser aplicado en cualquier contraloría a nivel municipal, departamental o nacional.
As políticas públicas na conjuntura do desenvolvimento rural e manutenção da agricultura familiar: Paradigmas, desafios e controvérsias
Authors: Miranda Dayana Lilian Rosa , Martins Pedro
Published: September 2016

A presente investigação pretende discutir a problemática de agricultores familiares tradicionais que tiveram sua atividade fragilizada pela dinâmica produtiva dominante instalada na época da modernização da agricultura e hoje apresentam sérias dificuldades em manter-se na terra, produzindo seus alimentos para subsistência ou, quiçá, para comercialização. Sendo assim, busca-se avaliar a partir da visão dos sujeitos, a relação das políticas públicas direcionadas ao desenvolvimento da agricultura familiar relacionadas ao paradigma do desenvolvimento rural e à manutenção da atividade no território do Vale do Ribeira – Paraná, mais especificamente nos municípios de Rio Branco do Sul e Itaperuçu, com vistas a verificar a referida contribuição destas políticas públicas no contexto do desenvolvimento rural e cumprimento dos objetivos propostos. Assim, pode-se concluir que a agricultura familiar tem relevância no alcance do desenvolvimento rural e sustentável do meio, mas este êxito é dependente das políticas públicas.Palavras-chave: Território, Políticas Públicas, Agricultura Familiar, Desenvolvimento Rural.
Application of a recently developed geotechnical carbon calculator in Europe
Authors: Rios Sara , Cristelo Nuno , Fonseca António Viana da , Rosa Ivo , Ramos Catarina
Published: September 2016

Recent research regarding soil stabilization has been increasingly concerned with environmental performance. The present paper applies the newly developed CO2(eq) geotechnical calculator, created by the European Federation of Foundation Contractors and the The Deep Foundations Institute, to assess the behavior of three different binders used in the construction of cutter-soil mixing columns, which formed an embankment/bridge transition wedge. The binders were based on ordinary Portland cement, on a blast furnace slag and cement blend and alkali activated fly ash. Results show that the last two binders are significabtly more effective, in terms of environmental performance, than the more traditional cement-based binder. Although the blast furnace slag cement, at this early stage of the geopolymeric binders, appears as the most interesting option, the fact that the CO2/cost ratio of both options is very similar stands out.
Considerações sobre a proposta de planejamento regional no extremo sul de Santa Catarina: Projeto geoparque caminhos dos cânions do sul
Authors: Da Rosa Tarcisio Roldão , Rocha Isa De Oliveira , Marimon Maria Paula Casagrande
Published: September 2016

O objetivo do presente artigo, que apresenta reflexões dedicadas para a dissertação de mestrado desenvolvida no Programa de Pós-Graduação em Planejamento Territorial e Desenvolvimento Socioambiental da UDESC, consiste em apresentar algumas questões sobre o Projeto Geoparque Caminhos dos Cânions do Sul. Neste território, em que a proposta do Geoparque está inserida, existem os Parques Nacionais de Aparados da Serra (PARNAS) e o Parque Nacional da Serra Geral (PNSG), sítios arqueológicos e paleontológicos e vinte Geossítios atestados pelo Serviço Geológico do Brasil (CPRM), entre outras potencialidades. Um Geoparque tem o propósito de desenvolver uma região no seu aspecto cultural, econômico e ambiental, tornando-se possibilidade de efetivação de um planejamento regional para alcançar o desenvolvimento socioambiental. A SDR e a AMESC, além de outras instituições, estão integradas em torno do objetivo de obter o título de Geoparque para o Extremo Sul Catarinense.
Determinants of municipal solid waste management in Portugal
Authors: Mota Freitas Ana Luísa , Martins Francisco Vitorino , Real de Oliveira Elizabeth
Published: September 2016

Municipal solid waste management has been a topic of interest of several authors over time, in particular the implementation and maintenance of waste collection programmes. Initially, pioneering studies focused on the economic aspects of the provided services. However, many authors later argued the costs of providing solid waste collection services should also be influenced by socio-economic and behavioural factors, exogenous to the municipalities. The present study will be developed in this context, looking, more broadly, to explain the factors influencing the decision-making of the Portuguese municipalities in implementing and maintaining programs of selective collection of solid waste, considering the economic, financial, technological and sociodemographic factors. The results show that, indeed as presented by several authors before, economic factors aren’t the only determinants that influence municipal costs concerning these services, as demographic, geographic and technological factors must be taken into account. Moreover, the enforced legislation also impacts the municipal costs due to municipalities being obliged to contribute to the success of these collection programs in order to fulfil the waste recovery targets. This implies that the costs of these services and the inherent infrastructures are usually financed by its citizens in the form of utilization taxes and also the state.
A gestão de resíduos, as políticas públicas e o agronegócio como contribuições para o desenvolvimento
Authors: Catapan Anderson
Published: September 2016

Este editorial introduz o segundo número do quarto volume da Revista Brasileira de Planejamento e Desenvolvimento. Os tópicos dos artigos incluem gestão de resíduos sólidos, políticas públicas na saúde, auditoria, bionegócios, obras geotécnicas, contratos do agronegócio, inovação em tecnologia de transporte, princípios de processo administrativo e planejamento regional.
Disciplina e indisciplina no cotidiano e contexto escolar: um enfoque foucaultiano
Authors: Montanarin Cleveron
Published: September 2016

Esta pesquisa tem por objetivo identificar as situações de indisciplina vivenciadas no cotidiano escolar e as medidas utilizadas pelo estabelecimento de ensino visando à manutenção e ao controle da disciplina. Tendo como principal aporte teórico o pensamento do filósofo Michael Foucault, foram analisados os instrumentos que integram a lógica pedagógica, tal como o livro de ocorrência, questionando em que medida a lógica disciplinar de formar indivíduos dóceis e úteis está presente no material pesquisado. Tal análise é de fundamental importância, na medida em que torna possível verificar se a prática pedagógica da escola está em consonância com o discurso que está materializado em seu Projeto Político-Pedagógico, onde afirma que o papel da instituição, entre outros, é de tornar os alunos autores criativos e leitores críticos.
Trajectória e desafios da avaliação do desempenho docente: o caso da Universidade Pedagógica de Moçambique
Authors: Duarte Stela Mithá , Bastos Juliano Neto
Published: September 2016

O artigo aborda a trajectória e os desafios da avaliação do desempenho docente na Universidade Pedagógica de Moçambique (UPM). Tendo como base a pesquisa bibliográfica e documental, e a experiência informada dos autores, o texto tem como objectivo geral analisar a trajectória e os desafios da avaliação do desempenho docente, tendo em vista a melhoria da qualidade institucional da UPM. Argumentamos que, apesar do reconhecimento, pelo menos do ponto de vista teórico, do papel da avaliação do desempenho docente na melhoria da qualidade institucional, na prática, ela ainda está associada ao paradigma da objectividade, descurando aspectos emocionais e pouco contribuindo para a auto-reflexão do sujeito em relação ao seu desempenho. Concluímos que a avaliação do desempenho docente tem que ser concebida numa perspectiva holística, que inclua a auto-reflexão do professor sobre a sua prática e que, embora ainda esteja numa fase inicial de construção na UPM, a avaliação do desempenho docente necessita de ser ressignificada de modo a garantir maior contributo para a melhoria da qualidade institucional.
In Vivo Evidence of Inner Retinal Neurodegeneration in Retinitis Pigmentosa Using Spectral-Domain Optical Coherence Tomography
Authors: Alshareef Rayan A. , You Qisheng , Barteselli Giulio , Rao Harsha L. , Goud Ashwin , Chhablani Jay
Published: September 2016

BACKGROUND AND OBJECTIVE:

To investigate the topographic changes in macular ganglion cell inner plexiform layer (GCIPL) thickness in eyes with retinitis pigmentosa (RP).

PATIENTS AND METHODS:

Forty-five eyes of 25 subjects with RP who underwent spectral-domain optical coherence tomography (SD-OCT) using the Cirrus HD-OCT (Carl Zeiss Meditec, Dublin, CA) were analyzed retrospectively. A control group of 67 eyes of 48 age-matched healthy volunteers was also included for comparison. Average, minimum, and sectoral macular GCIPL, as well as retinal nerve fiber layer (RNFL) and outer retinal (OR) thicknesses, were collected and compared between RP and control groups.

RESULTS:

The average and sectoral macular GCIPL thicknesses were significantly reduced in RP eyes compared with controls (
P
< .0001). Average macular RNFL thickness was reduced in RP eyes compared with controls (
P
< .054).

CONCLUSIONS:

In eyes with RP, display reduced GCIPL, RNFL, and OR thickness. The identification of alteration in RNFL, OR, and GCIPL thickness may be useful for future therapeutic implications.

[
Ophthalmic Surg Lasers Imaging Retina
. 2016;47:828–835.]
Central Retinal Vein Occlusion and Paracentral Acute Middle Maculopathy Diagnosed With En Face Optical Coherence Tomography
Authors: Phasukkijwatana Nopasak , Rahimi Mansour , Iafe Nicholas , Sarraf David
Published: September 2016

A 21-year-old healthy female presented with acute-onset vision loss in the left eye. Multimodal imaging, including fundus photography and fluorescein angiography, was unremarkable. En face optical coherence tomography (OCT) demonstrated paracentral acute middle maculopathy (PAMM) lesions in a perivenular fern-like pattern leading to the diagnosis of central retinal vein occlusion (CRVO). En face OCT can be an important modality to identify the distribution of abnormalities of the middle retina such as PAMM. The distribution of PAMM lesions in the posterior pole will be a critical element in the determination of the etiologic disorder.

[
Ophthalmic Surg Lasers Imaging Retina
. 2016;47:862–864.]
Valuing queer identity in Monster High doll fandom
Authors: Austin Sara Mariel
Published: September 2016

According to Mattel, Monster High dolls topped $500 million in annual sales in 2014, quickly gaining on Barbie, whose $1.3 billion in annual revenue plummeted for the fourth quarter in a row. Monster High's recent ad campaign claims, "We are monsters. We are proud." Race, ethnicity, and disability are coded into the dolls as selling points. The allure of Monster High is, in part, that political identity and the celebration of difference become consumable. The female body, the racialized body, and the disabled body have long been coded as monstrous. Monster High reclaims this label, queering it. Using Jack Halberstam's work on children's culture and Richard Berger's and Rosalind Hanmer's work on fandom, this article explores the queer potential of Monster High. Fans rewrite the Mattel narrative through fan fiction, repainting the dolls, and embodying them through virtual avatars, makeup, and costume play. These fan practices both queer the dolls' identity politics and create communities of interest that act as safe spaces for expressing queer identity and generating fan activism. These fan practices have also influenced Mattel's branding of the dolls, specifically with the recent inclusion of activism campaigns such as WeStopHate and The Kind Campaign into the Monster High Webisodes and Web site. By exploring the queer politics of Monster High fandom, this paper explains how that queering generates social change.
creative empowerment of body positivity in the cosplay community
Authors: Lome Jordan Kass
Published: September 2016

In a case study about the cosplay community in relation to creative empowerment of identity and body positivity, I created a blog (http://cosplaycasestudy.tumblr.com/) and devised a survey that allowed cosplayers whom I met online and in person to discuss what cosplay meant to them as individuals. Using a combination of qualitative, arts-based research and journalism, I used online documentation to record the ways cosplayers see the community changing, noting themes such as body policing, social media, and sexual harassment.
Local newspaper movie contests and the creation of the first movie fans
Authors: Whitehead Jessica Leonora
Published: September 2016

This article explores the advent of local newspaper movie contests in the 1910s and how these contests helped to create active movie fans. Such contests increased the popularity of the new medium of film by engaging local audiences in the process of filmmaking, including fans as scriptwriters and even stars. They helped to transform film into a dominant cultural practice by creating local spaces for film patrons to become part of the national pastime of going to the show. They did so by appealing directly to female spectators, who both legitimized going to the movies and created dynamic film fan communities
Toward a goodwill ethics of online research methods
Authors: Kelley Brittany
Published: September 2016

As more academic work (teaching, research, and publishing) moves online, we acafans face ever more challenges regarding how academia and online communities can and should interact. Since academia enjoys a position of power, while fan communities are often highly marginalized, I argue that, as acafans, we have a special responsibility to the fan communities we engage with and study. Fulfilling this responsibility means using what I call a goodwill ethics heuristic approach to online research methods, which requires us to balance the concerns of fans with those of scholarly development. In order to trace what this goodwill heuristic approach to online research methods might look like, I start by examining ethical values of research methods as they are defined by the Belmont Report. I then revisit the methods of previous fan studies. I add to these methods an extended set of ethical values as they have been described by prominent scholars in a range of fields using human subjects research. Finally, I discuss my own online fannish profile, focusing on my self-positioning and how it has been crucial in developing a goodwill ethics approach in my own research. Ultimately, I argue that all online research should use a goodwill ethics heuristic approach, and that such an approach is chiefly characterized by researchers' willingness to abdicate their expert status where necessary; ongoing negotiations between researchers and participants; and researchers' taking sufficient time to establish both an emic perspective of the community or site being researched and relationships with participants.
"Millennial fandom: Television audiences in the transmedia age," by Louisa Ellen Stein
Authors: Dare-Edwards Helena Louise
Published: September 2016

Review of Louisa Ellen Stein, Millennial fandom: Television audiences in the transmedia age. Iowa City: University of Iowa Press, 2015, paperback, $24 (224p) ISBN 978-1609383558; e-book, $24, ISBN 978-1609383565.
cultural politics of colorblind TV casting," by Kristen Warner
Authors: Haggins Bambi
Published: September 2016

Kristen Warner, The Cultural Politics of Colorblind TV Casting. New York: Routledge, 2015, hardcover $140 (170p) ISBN 978-1138018303, e-book $54.95 (748 KB) ASIN B00YY64066.
THREE BAYS ESTUARY (BARNSTABLE, CAPE COD) WATERSHED RESTORATION PLAN: A GREEN INFRASTRUCTURE APROACH
Authors: Horsley Scott , Perry Erin , Counsell Lindsey
Published: September 2016

INTRODUCTION

This paper presents an approach described as “non-traditional” for restoring water quality and ecosystem services that have been degraded as a result of excess nitrogen. It focuses on emerging technologies often referred to as green infrastructure. These technologies may provide cost effective alternatives to traditional, gray infrastructure such as sewering and is likely to provide significant co-benefits including the creation of local jobs, the preservation of real estate values, and habitat enhancement.

The paper focuses on the Three Bays estuary on Cape Cod to illustrate the benefits and potential of green infrastructure technologies. The Three Bays estuary is presented as a case study and as a representative example of implementation of the broader Cape Cod Water Quality Management Plan Update (208 Plan Update) – a nationally-recognized watershed planning project designed to provide a pathway for the fifteen towns of Cape Cod to achieve compliance with Section 208 of the Clean Water Act.

The Three Bays estuary and embayment system is a scenic Cape Cod bay that hosts sailing, kayaking, swimming and shellfishing and is located in the Town of Barnstable. It is comprised of three primary segments that include West Bay, North Bay and Cotuit Bay. Sub-systems include Prince Cove that flows into North Bay, the Narrows that flows between North Bay and Cotuit Bay and Eel Pond that flows into East Bay (see Figure 1).

The Massachusetts Estuaries Project (MEP) is a state-sanctioned watershed-modeling project that assesses the conditions of the state's estuaries and required restoration goals. Its technical report (2006) indicates that the water quality of the Three Bays system has resulted in seriously degraded to moderately degraded habitat. The system is listed as an impaired water body on the US Environmental Protection Agency (EPA) 303d list of impaired waters. An approved Total Maximum Daily Load (TMDL) for nitrogen has been established for the embayment.

This assessment is supported by more recent empirical water quality data collected within the embayment. The more current data documents a continuing decline in water quality with more common algae blooms (see Figure 2).
Mechanical Properties and Thermal Resistance of Natural Rubber Nanocomposite Reinforced with Quaternized Polyvinyl Alcohol/Silica Nanoclusters
Authors: Liu Jin , Tian Xiao Hui , Sun Jin Yu , Wang Shu Yi , Duan Jun Chao
Published: September 2016

Quaternized polyvinyl alcohol (QPVA) was synthesized and used as an intermedium to improve dispersion of silica (SiO2) in natural rubber (NR). QPVA/SiO2 nanoclusters reinforced NR nanocomposite was prepared by latex compounding via electrostatic interaction. TEM micrographs demonstrated QPVA/SiO2 nanoclusters were distributed around NR particles, forming shell-core structure. The mechanical properties and thermal ageing resistance of NR-QPVA/SiO2 were significantly improved compared with that of neat NR. The tensile strength of NR-QPVA/SiO2 film was improved by 60%, when the SiO2 content is 3%. SEM pictures indicated SiO2 was homogenous dispersed throughout NR matrix in the presence of QPVA. It also demonstrated that SiO2 could enhance thermal stability of NR, as NR-QPVA/SiO2 had best surface morphology after 72 hours thermal ageing at 100 °C. The thermal decomposition temperature and glass transition temperature of NR-QPVA/SiO2 film increased to a higher temperature due to strong polymer–filler interaction, which also indicated that all the ingredients were compatible and homogenous.
The Impact of Nanoparticles Geometry and Particle Size on Formation Damage Induced by Drilling Nano-Fluid during Dynamic Filtration
Authors: Sedaghatzadeh Mostafa , Shahbazi Khalil , Ghazanfari Mohammad Hossein , Zargar Ghasem
Published: September 2016

In this paper, the impact of three parameters including nanoparticles geometry, particles aggregation and borehole inclination on induced formation damage from water based drilling fluids were investigated by means of experimental studies. Accordingly, we designed a dynamic filtration setup capable to rotate and change well inclination. nanobased drilling fluids consisting of spherical, cubical and tubular shapes nanoparticles as fluid loss additives were used. Mud cake quality, core permeability impairment and degree of formation damage at various well inclinations were examined. The cluster structure of aggregated particles were determined using fractal theory and applying dynamic light scattering technique. For this purpose, drilling fluids were circulated at different well inclinations and at a constant differential pressure against a synthetic core. Field emission scanning electronic microscopy images taken from mud cakes confirmed the proposed cluster structures of nanoparticles. The experimental results show that the mud cake quality and degree of damage are functions of produced structure of aggregated particles. Moreover, by increasing the well inclination, the skin factor increases. However, this trend is intensively depended on particle geometry. Real time analysis of pore throat size to particle size ratio during mud circulation shows the tendency of particles to create external/internal filter cake is mainly related to well inclination and particle shape. The results can be used to optimize the size and shape of selected macro/nanoparticles as additives in drilling fluids to reduce formation damage in directional and horizontal wells during drilling operation.
Hydrogen Bonding in Assemblies of Mn(II)/Mn(III)-NEt3 Complex Self-Organized with the Formation of Hydrophobic Core
Authors: Udaltsov Alexander V. , Lyutoev Vladimir P. , Belykh Dmitri V.
Published: September 2016

Results of the study of Mn (II)/Mn (III)-NEt3 complex self-assembled with the formation of hydrophobic core are considered in terms of hydrogen bonding between the ligands of manganese octahedral complexes. It is found that the hydrogen bonding plays important role in spin-spin interaction of the coupled Mn-aquacomplexes. Number of H2O molecules in the shell of the latter is suggested to estimate according to the peak-to-peak width (ΔBpp) of the broadened ESR pattern.
Architecture and Engineering of Hydrogen Fuel Cell Power Generation Based on Renewable Energy
Authors: Djunaedi Imam , Wahyu Haifa , Sugiyatno
Published: September 2016

The paper presents an architecture and engineering of hydrogen fuel cell electric power generation system based on renewable energy that already installed in Tenjolaya village, Wanassalam sub-district, Lebak - Banten Province. It also discloses some important information as well as some valuable experiences from the pilot plant operation. The renewable electric power generation system combines wind turbine, photovoltaic, hydrogen electrolysis and fuel cell. The basic design of this system is focused on energy storage in the form of hydrogen gas that can be converted back into electricity by using fuel cell units. The engineering development was done to address the issues on limited energy storage in the battery unit which has several drawbacks i.e. short battery lifetime, limited storage capacity and rigorous and continuous maintenance schedule. To enable remote control and monitoring, a web based monitoring system was developed. From the monitoring system the following information are obtained: the amount of electrical power produced by the wind turbine that was intermittent and depends on time that reached 3000 W; similar pattern is observed from the output power of solar PVs and a maximum point of the solar cell power generation was 640 Watt; the time of electricity production by the wind turbine and the solar cell is complementary to each other in every one day cycle. Two valuable experiences have been gained those are: the location near sea shore has a very corrosive air that damages the wind turbine component, and the use of fuel cell requires high investment cost.
Nano-Scale Particle Formation by Dynamic Mixing Method in Physical Vapor Deposition
Authors: Koh Seok Keun , Lee Jung Hwan , Lee Charles , Koh Katherine
Published: September 2016

Nano size (2 - 10 nm) metal particles were formed and accumulated on powder substrate by conventional physical vapor deposition (PVD) process, in which the powder were a non-volatile in vacuum, such as Al2O3 powder. The neutral nuclei which were formed on the substrates from vaporized or sputtered metal atoms at an initial thin film growth were not grown up to coalescence and island stage with arrival atoms and ad-atom migration in the continuous deposition process, when the powder in vessel were continuously stirred during the deposition. Nano sized particles on the polymer chips (diameter: 1-2mm) easily dispersed into the polymer matrix by heating the chips, and on non-soluble powder, g-Al2O3, were stuck on the supporters stably in air. The nanoparticles on sucrose directly formed colloid with water solvents without dispersive agents. Most of the nano sized particles appear their own characteristic colors due to plasmon effect. Concentration and size of the nanoparticles are controlled by physical parameters in the PVD and the stirring speed of the powder. Surface phenomena on the substrate have been discussed with TEM, SEM, EDX, UV spectroscopy, etc. comparing with the conventional thin film growth.
Structural and Magnetic Study on the Effect of Substitution of Cobalt by d-Valent Elements of Co2FeSi Heusler Alloy
Authors: Saimin Muhammad Noor Syazwan , Aziz Siti Sumaiyah Sheikh Abdul , Ali A.M.M. , Hassan Oskar Hasdinor , Yahya Muhd Zu Azhan , Taib Mohamad Fariz Mohamad
Published: September 2016

In this paper, the effect of substitution of Co by d-valent elements such as Ag and Pt on electronic structure and magnetic properties of full Heusler type Co2FeSi alloys was investigated. Structural study reveals the presence of a small gap in the minority band structure around the vicinity of the Fermi level on Co2FeSi resulting to half-metallic behaviour. However, CoFeSiAg and CoFeSiPt cannot preserved the half-metalicity due to disappearing of the gap in the minority band structure due to the creation of new states around the Fermi level in the minority density of states. The variation in the magnetic moment of Co2FeSi with change of the atoms was attributed to the change in the local magnetic moment of atoms.
Rehabilitation of Continuous Reinforced Concrete Beams in Shear by External Bonding of Carbon Fiber Reinforced Polymer Strips for Sustainable Construction
Authors: Samad Abdul Aziz Abdul , Mohamad Noridah , Ali Noorwirdawati , Jayaprakash J. , Mendis Priyan
Published: September 2016

To achieve sustainability in construction, the rehabilitation of existing concrete structures is vital in ensuring its structural integrity and longevity. Therefore, an experimental investigation on the shear strengthening of 2-span continuous reinforced concrete (RC) beams wrapped with carbon fiber reinforced polymer (CFRP) strips were conducted. The beam specimens were subjected to four point bending test and loaded incrementally until failure occurs. Different wrapping schemes and layers of CFRP strips were externally bonded within the shear span of the beams. The failure load, modes of failure, its crack patterns, deflection profile were recorded and presented for discussion. From observation, the experimental results indicated good improvement as the shear strengthened beams shows enhanced failure load and shear strength capacity. An improved stiffness and ductility behaviour was also observed compared to the control beam. Comparison with ACI 440 (2008) design provisions for shear strength shows that the prediction values underestimated its experimental results. This indicates that the enhanced shear performances of the 2-span continuous RC beams prove the reliability of CFRP as a strengthening material. Hence, the shear strengthening technique allows the rehabilitation process of existing structural members to improve its structural integrity, longevity and sustainability.
Behavioural Study of Steel Fiber and Polypropylene Fibre Reinforced Concrete
Authors: Köroğlu Mehmet Alpaslan , Özdöner Nebi
Published: September 2016

Fibres are generally used as resistance of cracking and strengthening of concrete. The purpose of this research is to investigate the strength and mechanical properties of plain concrete, steel fibre reinforced concrete and polypropylene fibre reinforced concrete. The main focus of this investigation is to understand the reinforcement material’s behaviour on concrete and to compare the effect of increasing fibres on the concrete. The percentages of fibre used for both types of concrete were 0.5%, 1%, 1.5% and 2%. Details and results of the experimental study are provided and discussed.
Reinforcing Fibre Reinforced Polymer Bridge Decks with Steel Rods
Authors: Köroğlu Mehmet Alpaslan , Dere Yunus
Published: September 2016

Fibre reinforced polymer (FRP) bridge decks have become an innovative alternative and they have offered many advantages and this has been increasing attention for applications in not only reinforcement of existing bridges decks but also construction of new bridges decks. The advantages of these FRP decks are; lightweight, high-strength FRP materials, corrosion resistance. However, this high strength deck is not ductile. In this study, the behaviour of hybrid FRP-steel decks are investigated. All FRP decks was analysed with the commercial package ABAQUS. In the FE model, the webs and flanges were discretised by 4 nodes shell elements. A full composite action between the steel and the FRP composite was assumed in the FE analysis because the bond-slip behaviour was unknown at that time. The performance of the proposed hybrid FRP deck panel was evaluated by means of FE analysis.
Experimental and Theoretical Analysis of I-Pillars of Noise Barriers Made of Prestressed Steel Fiber Concrete, Prestressed Concrete and Reinforced Concrete with Footings Length of 600 mm
Authors: Čech Jindřich , Kolisko Jiří , Tej Petr , Pokorný Petr , Kohoutková Alena
Published: September 2016

This paper deals with the experimental testing and theoretical analysis of the flexural load-bearing capacity of I-shaped pillars in noise barriers made of reinforced concrete, prestressed concrete and prestressed steel fiber reinforced concrete. The pillars were loaded as a cantilever under a flexural load, which corresponds to their actual loading when the effect of wind on the panels of the noise barrier is taken into account. For the purpose of the present research, three specimens of I-pillars were tested. The results of the experimental loading tests, as well as the calculated results and the comparison between them, are herein presented.
Control of Drying Shrinkage of Magnesium Silicate Hydrate Gel Cements
Authors: Zhang Ting Ting , Liang Xiao Min , Lorin M. , Wu Zhen Lin , Cheeseman Chris , Vandeperre Luc
Published: September 2016

Cracks were observed when the magnesium silicate hydrate gel cement (prepared by 40% MgO/ 60% silica fume) was dried. This drying cracking is believed to be caused when unbound water evaporates from the binder. The shrinkage upon forced drying to 200 °C of mortars made up from a reactive magnesium oxide, silica fume and sand was measured using dilatometry. The magnitude of the drying shrinkage was found to decrease when more sand or less water was added to the mortars and can be as low as 0.16% for a mortar containing 60 wt% sand and a water to cement ratio of 0.5, which is of a similar order of magnitude as observed in Portland cement based mortars and concretes. A simple geometrical interpretation based on packing of the particles in the mortar can explain the observed drying shrinkages and based on this analysis the drying shrinkage of the hydration products at zero added solid is estimated to be 7.3% after 7 days of curing.
Research on DC Breakdown and Flashover Characteristics of PI with Different Temperature
Authors: Niu Tian Ye , Wu Jia Xin , Li Ying Wen , Xu Dong Sheng , Li Lu , Wang Lai Jun , Zhang Rui , Chen Kai , Zhang Li , Zhang Hua
Published: September 2016

The electrical characteristics of insulating materials play a key role on the working performance and operation reliability of power equipment. With the rapid development of superconducting technology in recent years,the working temperature of high temperature superconducting power equipment can be controlled around the liquid nitrogen temperature. Due to its excellent dielectric performance and mechanical properties, polyimide have been widely used in power equipment at room temperature. However, polyimide, as a kind of cryogenic insulating materials, is rarely reported at present. Therefore, the study of the insulating characteristics of polyimide at the cryogenic temperatures is of great significance. The DC breakdown property and flashover performance of polyimide are tested around room temperature (300K) and liquid nitrogen temperature (78K). The results show that temperature has some effects on the DC breakdown property and flashover performance of polyimide.
Effect of Magnetic Field Strength on Carbide Precipitation Behavior in W6Mo5Cr4V3 High Speed Steel during Medium Temperature Tempering
Authors: Wu Yan , Zhang Zhi Wei , Wang Qian , Xiao Na , Zhao Xiang
Published: September 2016

Effect of magnetic field strength on carbide precipitation behavior in W6Mo5Cr4V3 highspeed steel during medium temperature tempering was investigated. The applied magnetic field promoted the precipitation and refinement of M6C and MC carbides at boundaries and in the grain interior, but maximum spheroidization occurred for those M6C carbides precipitated at boundaries, the stronger the magnetic field strength, the stronger the spheroidization effect. The high magnetic field hinders the precipitation of M2C type carbides, and the M2C type carbides basically disappear when applying the magnetic field.
The Influence of High-k Material/SiO2 Gate Stacks on Direct Gate Tunneling Current of Cylindrical Surrounding-Gate MOSFETs
Authors: Noor Fatimah A. , Bimo Christoforus , Khairurrijal Khairurrijal
Published: September 2016

In this paper, we present a model of gate tunneling current in cylindrical surrounding-gate MOSFETs through dual layer high-k dielectric/SiO2 stacks. The model was derived under a quantum perturbation theory by taking into account both structural and electrical confinement effects. The influences of high-k materials and SiO2 thickness on the gate tunneling current have been studied. The calculated results show that the HfO2 is the most effective high-k material to decrease the gate tunneling current. It is also shown that the gate tunneling current is reduced with the SiO2 thickness. In addition, the obtained tunneling currents are fitted well with those obtained under the self-consistent calculation.
Experimental Study on the Plant Dye Sensitized TiO2 Electrode
Authors: Xu Pei Yao , Mu Man , Li Yan Qing , Zhang Sheng Han
Published: September 2016

In this paper, Ti sheets were anodized to obtain TiO2 nanotube arrays electrodes. The impact of different oxidation conditions on photoelectric properties of TiO2 nanotube arrays were discussed by the photocurrent density, and the optimal oxidation conditions of TiO2 which had good photoelectric properties were found. Pigments were extracted from fresh spinach leaves, tomatoes and carrots, and to be used as plant dye to sensitize TiO2 electrodes. The photocurrent density and the Incident Photon to Current Efficiency (IPCE) of the plant dye sensitized TiO2 electrodes were examined.
Thermomechanical Characterization of Blended Biomass-Coal Ash Waste Materials
Authors: Samadhi Tjokorde Walmiki , Wulandari Winny , Gumilar Firra Ghassani , Ramadani Kenita Firsa
Published: September 2016

The combustion of biomass for energy generation is practiced in an increasing scale in Indonesia as the country heads towards the long-term national energy mix targeted by 2025. However, biomass combustion is prone to operational problems caused by the generally low-melting nature of biomass ashes. This work discusses the effects of co-combusting coal with POEFB (palm oil empty fruit bunch) and bamboo with respect to the thermomechanical behavior of the produced ashes. Coal is observed to increase the ash fusion temperatures (AFT) of neat and combined POEFB and bamboo ashes by as much as 300 °C. Aluminosilicate minerals in the coal combine with potassium in the biomass during co-combustion, producing high-melting K-aluminosilicates. A linear correlation is identified between measured AFT and ash liquidus temperatures estimated by FactSage thermochemistry calculation software, enabling the prediction of AFT of coal-biomass co-combustion systems.
Influence of Surfacing Current on Microstructure and Wear Resistance of Fe60 Alloy Surfacing Coating
Authors: Chen Bo , Li Yi , Zhu Peng Xiao , Fan Hui Ji , Tang Cai , Jin Xin
Published: September 2016

Fe60 alloy surface coating was prepared on Q345 by plasma surfacing. The hardness and wear resistance of surfacing coating were tested by Rockwell Hardness Tester and dynamic load abrasive abrasion Tester. The microstructure of surfacing coating was studied by Optical Microscopy. The Influence of the surfacing current on hardness, microstructure and wear resistance were investigated.The results showed that, the samples prepared by 140 A exhibited excellent wear resistance, meanwhile many equiaxed grains were observed to distribute uniformly in the samples.
Development of Magnesium-Silicate-Hydrate Cement by Pulverized Fuel Ash
Authors: Zhang Ting Ting , Du Yan Nan , Sun Yan Jie , He Zi Ming , Wu Zhen Lin
Published: September 2016

Magnesium silicate hydrate (M-S-H) gel can be fabricated via the reaction of MgO with silica fume in the presence of sodium hexametaphosphate (Na-HMP). In this study, in effort to reduce the cost of the M-S-H gel system, pulverized fuel ash (PFA) was utilized as a silica source to replace silica fume. The influence of various PFA quantities on the compression strength and other properties of the M-S-H system were investigated via XRD, SEM, and TG-RTG analysis. Compressive strength was optimal when 35 wt% of silica fume was replaced. The hydration products were relatively more complex when PFA was used, containing hydrated calcium silicate, hydrated magnesium silicate, and carbonate gel, among other products. Magnesium carbonate participated in the hydration reaction process, which generated carbonated gel to form a grid structure and promoted the initial strength of the material. Taken together, the results showed that PFA can be feasibly and effectively used to form M-S-H gel cement systems at low cost.
Mathematical Model of the Influence of Chemisorption Process on Electrophysical Parameters of Nanosized ZnO Films
Authors: Shipulin Ilya A. , Zamburg Evgeny G. , Ageev Oleg A.
Published: September 2016

We have developed a mathematical model of electrophysical and gas sensitive properties of nanosized ZnO film during chemisorption of gas molecules of CO, CO2, CH4, and NO2 on its surface and figured out regularities of influence of thickness of depletion layer of nanosized ZnO films on their electric and gas sensitivity properties. We have determined optimal range of working temperatures and thicknesses of nanosized ZnO films for detecting CO, CO2 CH4, and NO2 with maximum gas sensitivity and selectivity and theoretical investigated gas-sensitivity properties of nanosized ZnO films.
Hardness and Texture Evolution of Sputtered TiN Thin Films with Different Thicknesses on Ti6Al4V Substrate
Authors: Xiao Na , Yang Bo , Du Fei Fei , Wu Yan , Zhao Xiang , Qin Gao Wu
Published: September 2016

In this present work, TiN films with various thicknesses (from 0.3 μm to 2 μm) were deposited by DC reactive magnetron sputtering on Ti6Al4V substrates. The evolution of texture and microstructure were studied by X-ray diffraction and Scanning Electron Microscopy, respectively. The XRD characterization indicates that the preferred texture of TiN films is changed from (111) to (100) with increasing the film thickness. The microstructure characterization shows that their microstructure transform from continuous into columnar with increasing the TiN film thickness. It is considered these results are arised from the change of overall energy including surface energy and strain energy with the film thickness. The hardness of TiN film increases with increasing the film thickness.
"Een Discussie Zonder Eind"
Authors: Van Rooyen T. S.
Published: September 2016

No abstract available.
Enkele Kenteoretiese Begrippe in die Geskiedenis
Authors: Meyer A. M.T.
Published: September 2016

No abstract available.
Die Bybelse stof as "hulpmiddel" in die poësie
Authors: Grové A. P.
Published: September 2016

No abstract available.
Boekbespreking
Authors: Engelbrecht S. P.
Published: September 2016

No abstract available.
Hope in the Old Testament
Authors: Vriezen Th. C.
Published: September 2016

No abstract available.
Die plek van sang en musiek in die Protestantse Erediens
Authors: Engelbrecht B. J.
Published: September 2016

No abstract available.
Voorwaardes vir die Prediking
Authors: Geyser A. S.
Published: September 2016

No abstract available.
Enkele trekke uit die vroomheid van Jodocus van Lodenstein
Authors: Pont A. D.
Published: September 2016

No abstract available.
Boekbespreking
Authors: Gemser B. , Dreyer P. S. , Pont A. D.
Published: September 2016

No abstract available.
Boekbespreking
Authors: Gemser B. , Mulder E. S. , Wolmarans H. P. , Dreyer P. S. , Stoop J. A. , Van Oosten F. , Engelbrecht S. P. , Stutterheim J. F.
Published: September 2016

No abstract available.
Die Betekenis melîçē'kā (Woordvoerders) in Jes. 43:27
Authors: Van der Merwe B. J.
Published: September 2016

No abstract available.
Die Sin van die Opvoeding
Authors: Oberholzer C. K.
Published: September 2016

No abstract available.
Register van Jaargang I-X van die "Hervormde Teologiese Studies"
Authors: Oberholzer C. K.
Published: September 2016

No abstract available.
Boekbespreking
Authors: Engelbrecht S. P. , Dreyer P. S. , Gemser B. , Geyser A. S. , Engelbrecht B. J. , Van Selms A.
Published: September 2016

No abstract available.
Die Anthropologie van het Nieuwe Testament vergeleken met die Antieke
Authors: Sevenster J. N.
Published: September 2016

No abstract available.
Boekbespreking
Authors: Dreyer P. S. , Dreyer S. P.
Published: September 2016

No abstract available.
Medelinge van die redaksie
Authors: Engelbrecht B. J.
Published: September 2016

No abstract available.
Die Geskiedenis van die Christendomi
Authors: Pont A. D.
Published: September 2016

No abstract available.
Boekbespreking
Authors: Engelbrecht B. J. , Dreyer P. S. , Stutterheim J. F. , Le Roux L. M.
Published: September 2016

No abstract available.
Boekbesprekings
Authors: Van Selms A. , Geyser A. S.
Published: September 2016

No abstract available.
Nogmaals Dr G.D. Scholtz se Geskiedenis van die Nederduitse Hervormde of Gereformeerde Kerk
Authors: Engelbrecht S. P.
Published: September 2016

No abstract available.
In memoriam Prof. J. de Zwaan
Authors: Engelbrecht S. P.
Published: September 2016

No abstract available.
Boekbespreking
Authors: Geyser A. S. , Pont A. D. , Geyser A. S.
Published: September 2016

No abstract available.
Enkele Aantekeninge by die Teologies-Godsdienstige gedagtes van Sendeling S.J.G. Hofmeyr 1839-1905
Authors: Pont A. D.
Published: September 2016

No abstract available.
Boekbespreking
Authors: Le Roux L. M. , Mulder E. S.
Published: September 2016

No abstract available.
By die Uittrede van Prof. Dr H.P. Wolmarans
Authors: Oosthuizen A. J.G.
Published: September 2016

No abstract available.
Die name van Petrus en I. Petrus
Authors: Geyser A. S.
Published: September 2016

No abstract available.
Die Teologie van die Woord en die figuur van die Onmiddellike
Authors: Van Zyl F. J.
Published: September 2016

No abstract available.
Boekbespreking
Authors: Erasmus D. F. , Dreyer P. S. , Geyser A. S. , Van Selms A. , Van Zyl F. J.
Published: September 2016

No abstract available
Opmerkings oor die Moontlike Hersiening van ons Kerk se Liturgiese Geskrifte
Authors: Engelbrecht B. J.
Published: September 2016

No abstract available.