bluuebunny/crossref_metadata_2025 huggingface dataset:
Genomic Prediction of Manganese Efficiency in Winter Barley
Authors: Leplat Florian , Jensen Just , Madsen Per
Published: May 2016

Manganese efficiency is a quantitative abiotic stress trait controlled by several genes each with a small effect. Manganese deficiency leads to yield reduction in winter barley (Hordeum vulgare L.). Breeding new cultivars for this trait remains difficult because of the lack of visual symptoms and the polygenic features of the trait. Hence, Mn efficiency is a potential suitable trait for a genomic selection (GS) approach. A collection of 248 winter barley varieties was screened for Mn efficiency using Chlorophyll a (Chl a) fluorescence in six environments prone to induce Mn deficiency. Two models for genomic prediction were implemented to predict future performance and breeding value of untested varieties. Predictions were obtained using multivariate mixed models: best linear unbiased predictor (BLUP) and genomic best linear unbiased predictor (G‐BLUP). In the first model, predictions were based on the phenotypic evaluation, whereas both phenotypic and genomic marker data were included in the second model. Accuracy of predicting future phenotype, , and accuracy of predicting true breeding values, , were calculated and compared for both models using six cross‐validation (CV) schemes; these were designed to mimic plant breeding programs. Overall, the CVs showed that prediction accuracies increased when using the G‐BLUP model compared with the prediction accuracies using the BLUP model. Furthermore, the accuracies [] of predicting breeding values were more accurate than accuracy of predicting future phenotypes []. The study confirms that genomic data may enhance the prediction accuracy. Moreover it indicates that GS is a suitable breeding approach for quantitative abiotic stress traits.
MULTI-OBJECTIVE OPTIMISATION MODEL OF SHUTTLE-BASED STORAGE AND RETRIEVAL SYSTEM
Authors: Borovinšek Matej , Ekren Banu Y. , Burinskienė Aurelija , Lerher Tone
Published: May 2016

This paper presents a multi-objective optimisation solution procedure for the design of the Shuttle-Based Storage and Retrieval System (SBS/RS). An efficient SBS/RS design should take into account multi-objectives for optimization. In this study, we considered three objective functions in the design concept which are the minimization of average cycle time of transactions (average throughput time), amount of energy (electricity) consumption and total investment cost. By also considering the amount of energy consumption as an objective function for minimization, we aimed to contribute to an environmentally friendly design concept. During the optimization procedure, we considered seven design variables as number of aisles, number of tiers, number of columns, velocities of shuttle carriers, acceleration/deceleration of shuttle carriers, velocity of the elevators lifting tables and acceleration/deceleration of the elevators lifting tables. Due to the non-linear property of the objective function, we utilized the Non-Dominated Sorting Genetic Algorithm II (NSGA II) genetic algorithm for facilitating the solution. Lastly, we searched Pareto optimal solutions to find out the optimum results. We believe that this study provides a useful and a flexible tool for warehouse planners and designers, while choosing a particular type of SBS/RS at the early stage of the warehouse design.
GLOBAL SPIRAL ARMS FORMATION BY NON-LINEAR INTERACTION OF WAKELETS
Authors: Kumamoto Jun , Noguchi Masafumi
Published: May 2016

The formation and evolution of galactic spiral arms is not yet clearly understood despite much analytic and numerical work. Recently, the new idea has been proposed that local density enhancements (wakelets) arising in the galactic disk connect with each other and make global spiral arms. However, the understanding of this mechanism is not yet sufficient. We analyze the interaction of wakelets by using N-body simulations, including perturbing point masses, which are heavier than individual N-body particles and act as the seeds for wakelets. Our simulation facilitates a more straightforward interpretation of numerical results than previous works by putting a certain number of perturbers in a well-motivated configuration. We detected a clear sign of non-linear interaction between wakelets, which make global spiral arms by connecting two adjacent wakelets. We found that the wavenumber of the strongest non-linear interaction depends on galactic disk mass and shear rate. This dependence is consistent with the prediction of a swing amplification mechanism and other previous results. Our results unify previous results that were consistent with each other.
VUV PHOTO-PROCESSING OF PAH CATIONS: QUANTITATIVE STUDY ON THE IONIZATION VERSUS FRAGMENTATION PROCESSES
Authors: Zhen Junfeng , Castillo Sarah Rodriguez , Joblin Christine , Mulas Giacomo , Sabbah Hassan , Giuliani Alexandre , Nahon Laurent , Martin Serge , Champeaux Jean-Philippe , Mayer Paul M.
Published: May 2016

Interstellar polycyclic aromatic hydrocarbons (PAHs) are strongly affected by the absorption of vacuum ultraviolet (VUV) photons in the interstellar medium (ISM), yet the branching ratio between ionization and fragmentation is poorly studied. This is crucial for the stability and charge state of PAHs in the ISM in different environments, affecting in turn the chemistry, the energy balance, and the contribution of PAHs to the extinction and emission curves. We studied the interaction of PAH cations with VUV photons in the 7–20 eV range from the synchrotron SOLEIL beamline, DESIRS. We recorded by action spectroscopy the relative intensities of photo-fragmentation and photo-ionization for a set of eight PAH cations ranging in size from 14 to 24 carbon atoms, with different structures. At photon energies below ∼13.6 eV fragmentation dominates for the smaller species, while for larger species ionization is immediately competitive after the second ionization potential (IP). At higher photon energies all species behave similarly; the ionization yield gradually increases, leveling off between 0.8 and 0.9 at ∼18 eV. Among isomers, PAH structure appears to mainly affect the fragmentation cross section but not the ionization cross section. We also measured the second IP for all species and the third IP for two of them; all are in good agreement with theoretical ones, confirming that PAH cations can be further ionized in the diffuse ISM. Determining actual PAH dication abundances in the ISM will require detailed modeling. Our measured photo-ionization yields for several PAH cations provide a necessary ingredient for such models.
Regards croisés d’acteurs gérontologiques territorialisés sur la loi Hôpital Patients Santé et Territoires (HPST)
Authors: Blanchet Mickaël
Published: May 2016

L’action gérontologique recouvre plusieurs domaines d’intervention allant de la prise en charge médicale aux actions relatives à l’environnement de vie des personnes âgées. Malgré cette hétérogénéité ; les politiques de la vieillesse se sont concentrées sur l’accompagnement des personnes âgées dépendantes et ont, dans ce cadre, confié aux départements le rôle de leadership gérontologique. Seulement, la loi relative à l’Hôpital, aux Patients, à la Santé et aux Territoires (HPST) du 21 juillet 2009 et la création des agences régionales de santé (ARS) de l’État dont l’objectif est d’unifier et rendre plus efficace les politiques de santé ont remis en question les équilibres territoriaux et sectoriels qui prévalaient jusque-là dans le domaine gérontologique. Deux années après sa mise en application, il ressort de recherches régionales et locales que la loi s’est traduite par de nouveaux équilibres institutionnels et par la diffusion de l’offre médico-sociale et gérontologique sur le territoire sous un registre concurrentiel et administratif. Dans ce sens, le territoire en tant qu’espace où se formulent des réponses collectives entre institutions, professionnels et usagers, possibilité pourtant offerte par la Loi, constitue une méthodologie à développer.
Bouillon KUB
Authors: Vaugelade Anaïs
Published: May 2016

Résumé Un invité
Vendredi 13 / samedi 14
Authors: Rabau Sophie
Published: May 2016

Résumé chronique d’un chagrin d’amour en état d’urgence
Peut-être
Authors: Matton François
Published: May 2016

Résumé En cet instant…
« Drôle d’hiver… »
Authors: Brunon Hervé
Published: May 2016

Résumé Cultiver notre jardin
La Voie Sacrée
Authors: Alexakis Dimitris
Published: May 2016

Résumé les baricades mistérieuses
«Derecho, poder y libertad» a propósito de las batallas por la autonomía jurisdiccional entre las Audiencias del Cusco y Charcas (1820-1825)
Authors: Sala i Vila Núria
Published: May 2016

A partir de 1820 y tras la invasión de San Martín, el sistema judicial peruano tuvo que adecuarse a la desaparición de facto de la Audiencia de Lima y al modelo diseñado por la Constitución de 1812 y el Reglamento de las Audiencias y Juzgados de primera instancia del 9 de octubre de 1812. El artículo analiza tal proceso y las tensiones generadas cuando las Audiencias Nacionales de Cusco y Charcas hubieron de resolver problemas de procedimiento, pero sobre todo se ahonda en los debates y actores, abogados fundamentalmente, que conformaron la cultura jurídica hispana durante el Trienio Liberal en el virreinato del Perú, asumiendo que tal realidad trascendió en la construcción nacional del Perú y Bolivia.
Prácticas de justicia conciliatoria y sus dimensiones sociales. Chile, 1830-1836
Authors: Undurraga Schüler Verónica
Published: May 2016

Este trabajo analiza las prácticas de la justicia conciliatoria y el perfil social de sus usuarios en las villas y ciudades de Chile central, luego de la implementación de la conciliación como trámite previo a la presentación de demanda judicial ante los tribunales ordinarios entre 1824 y 1836. A partir de 299 juicios de conciliación se propone que la justicia conciliatoria fue un mecanismo de resolución de los conflictos usado preferentemente por los sectores alto y medio-alto ilustrado de las comunidades locales, que eran justamente quienes permitían su accionar ejerciendo distintas funciones administrativas. La activa participación de la comunidad –más bien de dicho sector de la comunidad local– fue determinante en la validación de esta «nueva» instancia de resolución de los conflictos, constatando el carácter activo de la sociedad en la legitimación de la legalidad y la institucionalidad estatal.
«Todos somos iguales». La Revolución de la Igualdad en Santa Cruz, Bolivia. 1876-1877
Authors: Schelchkov Andrey
Published: May 2016

La Revolución de Igualdad en Santa Cruz (1876-1877) o movimiento igualitario fue un conflicto entre el binomio formado por las capas plebeyas urbanas y las elites locales, defensoras de la fórmula del desarrollo que abogaba por una modernidad en equilibrio con los valores sociales de la sociedad patriarcal y tradicional, y otras elites locales, beneficiarias del auge del capitalismo de libre cambio. La actuación política de los igualitarios estuvo influenciada por las ideas del socialismo romántico en todas sus etapas y combinó formas legales con presión armada montonera y sublevación popular. El desajuste entre este proyecto de defensa de un autogestionado modo de vida local y las prioridades locales/estatales de modernización provocó una represión del mismo pocas veces vista en la sociedad cruceña en el siglo XIX.
GREEN INFRASTRUCTURE AND TRANSIT-ORIENTED MIXED USE DEVELOPMENT: THE ALEWIFE AREA OF CAMBRIDGE, MASSACHUSETTS
Authors: Batchelor James P. , Biancavilla David , Hegemann Ingeborg , Woodbury Catherine Daly
Published: May 2016

INTRODUCTION

This paper is a case study of the progress on environmental and development fronts in this critical area of Cambridge, Massachusetts. Portions of the riverine system to the north (Little River and Alewife Reservation) have been restored and include public amenities, and the park to the east (Danehy Park) has been realized. The degraded industrial land uses that had comprised the bulk of the land use have made a transition to a dynamic, mixed-used neighborhood.

This paper presents both the public and the private strategies undertaken to accomplish these goals. These strategies are presented in three parts: Public Infrastructure: Constructed Stormwater Wetlands and Larger Stormwater Management Goals Site Development: Environmental Strategies Urban Development Goals: Mixed-Use Neighborhood
RESIDENTIAL SOLAR ENERGY POTENTIAL FOR PUBLIC DISSEMINATION: A CASE STUDY IN CONCEPCIÓN, CHILE
Authors: Alvarado Rodrigo García , Troncoso Lorena , Campos Pablo
Published: May 2016

This paper presents a method for estimating the solar capture capacity of dwellings using the central urban area of Concepción, Chile, as a case study in order to promote self-generation of energy by residents. The method takes into account the growing domestic energy demand and the possibility of meeting this demand through integrated solar energy collection into buildings using different systems. The methodology considers a study of the potential incoming solar radiation on buildings according to their geographical location and the surrounding buildings. The capacity for solar capture is then estimated for different dwelling types according to their morphology. Subsequently, the energy contribution provided by different technologies (solar thermal, photovoltaic and hybrid) is identified in relation to the main average energy demands for electricity, water and space heating. Finally, systems for each dwelling are recommended in an urban map available online. The development is based on climate information, cartography, aerial photographs, surveys, housing models, technical standards, standardised calculations and dynamic simulations, implemented according to building layouts from an online Geographic Information System (GIS). The housing types are categorised in an urban map that relates household demands and the contribution of different solar energy systems. According to the estimates calculated, the residential units in the study offer sufficient solar capacity to supply between 40 and 60% of their energy consumption, especially in detached houses using roof-mounted hybrid systems.
A COMPARATIVE STUDY: DESIGN STRATEGIES FOR ENERGY-EFFICIENCY OF HIGH-RISE OFFICE BUILDINGS
Authors: Raji Babak , Tenpierik Martin J. , van den Dobbelsteen Andy
Published: May 2016

Tall buildings are being designed and built across a wide range of cities. A poorly designed tall building can tremendously increase the building's appetite for energy. Therefore, this paper aims to determine the design strategies that help a high-rise office building to be more energy efficient. For this purpose, a comparative study on twelve case buildings in three climate groups (temperate, sub-tropical & tropical) was performed. The exterior envelope, building form and orientation, service core placement, plan layout, and special design elements like atria and sky gardens were the subject of investigation. effectiveness of different design strategies for reducing the cooling, heating, ventilation and electric lighting energy usage. Finally, lessons from these buildings' were defined for the three climates. Furthermore, a comparison of building energy performance data with international benchmarks confirmed that in temperate and sub-tropical climates sustainable design strategies for high-rise buildings were performing well, as a result leading to lower energy consumption. However, for the tropics the design of high-rise buildings needs additional consideration.
A MODEL OF A NEAR-ZERO ENERGY HOME (nzeh) USING PASSIVE DESIGN STRATEGIES AND PV TECHNOLOGY IN HOT CLIMATES
Authors: Syed Ashraf T. , Abdou Adel A.
Published: May 2016

INTRODUCTION

Recent development has seen a drastic increase in energy use trends in Saudi Arabian buildings leading to a demand for an effective course of action for energy conservation and production. A case study-based research initiative exploring near-zero energy potential in Saudi Arabia was undertaken. A 4-bedroom detached single-family faculty residence at King Fahd University of Petroleum and Minerals (KFUPM) representing common regional housing design trends was utilized. A base case simulation model of the house was developed and validated using short-term and real-time energy consumption data. Three sets of strategies: passive design strategies, representative codes and standards, and renewable technology were employed in the new design of the house. Passive strategies comprised a green roof, a ventilated wall system, a sloped roof, and insulation for thermal bridges. These alternatives helped reduce the annual energy consumption of the house by 17.2%. The most recent version of the International Energy Conservation Code (IECC 2012) was also incorporated along with ASHRAE Standard 62.2 for ventilation. The code and standard together reduced the annual energy consumption by 31.1%. Solar PV was then utilized to reduce grid utilization for the remainder of the house energy loads. This strategy provided 24.7% of the total energy consumed annually. A combination of strategies showed a 70.7% energy consumption reduction, thereby decreasing the energy index of the house from 162.9 to 47.7 kWh/m2/yr. The Zero Energy Building (ZEB) concepts and strategies utilized in this study demonstrate a socially responsible approach to achieving near-zero energy performance for an existing house.
THE ROLE OF UMBRELLA AGREEMENTS IN ACHIEVING SUSTAINABILITY GOALS: ENERGY EFFICIENCY AT THE EMPIRE STATE BUILDING
Authors: Dahlmann Frederik , Veal Gareth
Published: May 2016

In this paper we investigate whether innovative and flexible contractual arrangements can support the process of achieving ambitious sustainability goals. We explore this question through an analysis of the role of umbrella agreements in driving energy savings in the building sector. Drawing on a case study of the iconic Empire State building, we examine the typical challenges faced by clients and contractors in devising suitable agreements that facilitate managing contractual and performance risks, as well as the sharing of responsibilities and cooperation between multiple project stakeholders. We find that the project arrangements appear to exhibit the adoption of the key characteristics commonly found in umbrella agreements which incorporate sustainability measures that maximize income through efficient delivery of outcomes. Specifically, this means that they need to enable stakeholders to manage repeated review cycles, complex perceptions and expectations, and different tacit assumptions and codes of behaviour, as well as managing and communicating in networks and obtaining agreement also from non-contractual parties. Moreover, we demonstrate that umbrella agreements can facilitate a network perspective of business relationships by emphasizing value co-creation and the embeddedness of firms within a network of interactions.
ENVIRONMENTAL RELATIVE BURDEN INDEX: A STREAMLINED LIFE CYCLE ASSESSMENT METHOD FOR FACILITIES POLLUTION PREVENTION
Authors: Dickerson Deborah E.
Published: May 2016

This paper describes a new semi-quantitative streamlined life cycle assessment (SLCA) method, the Environmental Relative Burden Index (ERBI), for describing and ranking the relative environmental burdens associated with facility operations and maintenance options. The long-range goal is for this ERBI method to serve as a pollution-prevention decision support tool for facilities managers, when faced with competing operations and maintenance alternatives. The specific application presented in this paper evaluates asbestos-containing materials (ACM) and lead-based paint (LBP) management options in public school facilities. The ERBI methodology is adapted from previous streamlined semi-quantitative LCA methodologies and is described in detail. The ERBI is then employed to evaluate the relative environmental impacts of six management strategies for these hazardous building materials: management in-situ, encapsulation/containment, and full abatement/disposal, for both ACM and LBP. SLCA goal definition, system boundaries, ERBI matrix, and overall ERBI Ratings (RERB) for each material management strategy are presented. The ERBI can be a useful tool in prioritizing building maintenance alternatives, especially in cases where detailed quantitative data are unavailable.
À l’heure du bilan quinquennal, quels enjeux stratégiques pour le Défenseur des droits ?
Authors: Medard Inghilterra Robin
Published: May 2016

Le 29 mars 2011, la protection extrajuridictionnelle des droits et libertés connaissait une mutation d’ampleur via la promulgation des lois organique (n° 2011-333) et ordinaire (n° 2011-334) relatives au Défenseur des droits. Cinq années plus tard, c’est désormais ancré au sein du paysage institutionnel que le Défenseur des droits remettait en février dernier son rapport annuel d’activité au Président de la République ainsi qu’aux présidents de l’Assemblée nationale et du Sénat. À l’instar des précédents, ce rapport décline de manière détaillée les actions conduites au cours de l’exercice 2015, caractérisé notamment par le renforcement des collaborations institutionnelles, la forte augmentation des saisines liées à la déontologie des forces de sécurité ou encore la montée en puissance du département « Promotion de l’égalité et accès aux droits ». De surcroît, à l’heure du bilan quinquennal, il fournit l’occasion d’une interrogation sur les enjeux stratégiques qui semblent façonner l’avenir de sa mission.
How Information Architecture Contributes to Define a Framework for a Market Intelligence System Development
Authors: Jamil George Leal , Rocha dos Santos Leandro Henrique , Jamil Liliane Carvalho , Vieira Augusto Alves Pinho
Published: May 2016

It was observed, in these last years, the consolidation of Market intelligence (MI) concept. Results from MI are now being applied in several strategic ways, serving mainly for the important relationship between strategic and marketing planning. This article intends to reinforce the conceptualization of MI process, observing specially its application in one critical sector: Healthcare. Healthcare is a dynamic sector, where strategic marketing planning fundamentals are still being disseminated and absorbed by managers and institutions. Marketing data and information must be provided from a variety of sources to produce knowledge, in a process that can be characterized as “organizational intelligence”. Collected contents from healthcare associated industrial sectors, such as chemical and pharmaceutical, have the potential to produce integrated value chain knowledge, improving analysis and decision processes. Approaching the healthcare market, a framework for an intelligence system for marketing decisions was discussed in Jamil et al. (2011) and it is now evaluated with the contribution of information architecture concepts. Literature review from that original approach is expanded, encompassing information architecture discussions, towards a more consistent framework for market intelligence system implementation and cases of MI application in Healthcare sectors are then re-evaluated, with this new theoretical contribution. Bringing this additional light, market intelligence is presented with a newer, updated and improved conceptualization for practical decisions.
Resilience and Psychomotricity
Authors: Cró Maria de Lourdes , Pinho Ana Mafalda Castro
Published: May 2016

With this article the authors would like to deepen the resilience and psychomotricity as action strategies in preschool education. They analyse too the importance of resilience and psychomotricity and their impact in the learning of disadvantaged children at a preschool age that are exposed to adverse social and personal factors and to assess the efficiency of an intervention program based in psychomotricity and resilience together. The authors developed a project in a region of Brazil (Botucatu), where a Psychological Development Activation Model was used with psychomotricity exercises and also the Programme Strong Start Pre K, in the area of resilience. The assessment instruments used were the WeBeST test for resilience and the Operational Portage Inventory test for Psychomotricity. The results indicate that there was an evolution in resilience among children in the group that participate in this program. They improved the resilience capacity, dealing with problems and controlling the emotions.
Weathering the Storm
Authors: Noblin Alice M. , Cortelyou-Ward Kendall , Rutherford Ashley
Published: May 2016

The Florida Health Information Exchange has grown over the years since its inception in 2004. Harris Corporation was contracted to provide some basic services to the health care industry in 2011 and this relationship has continued to the present time. As services have expanded, challenges have arisen. With disaster preparedness and business continuity an important part of continuity of care and health information technology initiatives, this paper will consider how a “network of networks” can be of assistance when natural disasters strike.
Effect of Hydroxyapatite Bioceramic Bodies on Subcutaneous Soft Tissue Reaction of Laboratory Rats
Authors: Koonawoot Rungsarit , Saelee Cherdsak , Thiensem Sakdiphon , Punyanitya Sittiporn
Published: May 2016

Hydroxyapatite (HA) is widely used in bioceramic materials for bone grafting. HA scaffolds were synthesized using solid-state reaction method. Scaffolds were prepared by milling the elements of CaCO3 and NH4H2PO4 powders. The obtained powder was pressed with uniaxial pressing into a disc shape with the dimension of 4 mm in thickness and 16.5 mm in diameter under pressures 3 MPa and then sintering the samples at difference temperatures from 1100°C to 1300°C for 3 hours. This research aimed to produce phase HA scaffolds in order to find out the effects of sintering temperature on phase contents, density, porosity, hardness and bending strength, and to use optimized condition samples study with laboratory rats’ soft tissue to evaluate the soft tissue response to the samples. Thirty-two healthy in adults’ on non-gender-specific of Wistar rats were used in this study. Optimized, sintered samples were cut and lathed into a cylindrical shape. Sixty-four samples of optimized condition were implanted and left in subcutaneous tissue for 3, 7, 14, 21, 30, 45, 90 and 180 days. XRD, XRF, Archimedes technique, Vickers hardness and bending strength, as well as light microscopy, were used for analysis. The results of optimized condition have shown the bodies of sintered sample at 1300 °C for 3 hours had the highest content of 91.02 % HA phase, and the remaining phases of 4.51 % b-TCP and 4.47 % CaO, its bulk density and strength increased with increasing temperature, the highest bulk density of 2.006 ± 0.033 g/cm3, hardness of 30.02 ± 3.23 HV, bending strength of 9.07 ± 1.15 MPa. Sample reactions to soft tissues at 180 days were mild inflammatory cells, an absence of cellular infiltration, a presence of calcification, and absence of displacement of ceramic components into surrounding host tissue. Our results concluded that the samples were nontoxic to subcutaneous tissue and biocompatibility
Effects of NaNbO3 Crystals on Electrical Properties of K0.5Na0.5NbO3 Ceramics
Authors: Suksri Chavalit , Parjansri Piewpan , Thonglem Sutatip , Intatha Uraiwan , Eitssayeam Sukum , Tunkasiri Tawee
Published: May 2016

Lead-free (K0.5Na0.5)NbO3 (KNN) piezoelectric ceramics were studied and synthesized by the seed-induced method. NaNbO3 crystal was used as seed and prepared by molten salt synthesis (MSS). The average particles size of NaNbO3 seed crystal was about 1-3 mm. Then, the NaNbO3 seed was mixed with KNN powder and ball milled for 24 h. The mixed powder was calcined at 700-900 °C and sintered at 1100 °C. The phase structure and morphology of the ceramics were investigated by X-ray diffraction and scanning electron microscope and the electrical properties were studied. The results indicated that all samples showed a pure perovskite phase. The highest density of the ceramic was 93% compared to the theoretical density. The results showed that NaNbO3seed crystal improved piezoelectric properties of KNN ceramics.
Tuning the Band Gap of ZnO Thin Films by Mg Doping
Authors: Thonglem Sutatip , Suksri Chavalit , Pengpat Kamonpan , Rujijanagul Gobwute , Eitssayeam Sukum , Intatha Uraiwan , Tunkasiri Tawee
Published: May 2016

Structural, morphological, optical and electrical properties of magnesium (Mg) doped zinc oxide (ZnO) films prepared by ultrasonic spray pyrolysis technique on microscope glass substrate, have been studied in terms of Mg doping content. The precursors solutions of Mg doped ZnO films were prepared from zinc acetate dihydrate (Zn (CH3OO)2⋅2H2O) and magnesium acetate tetrahydrate (CH3COO)2Mg⋅4H2O) acted as dopant. The compositions of these solutions were fixed at 0.02 M of Zn (CH3OO)2.2H2O and the atomic percentage ratio of Mg/Zn was varied from 0 to 20 atomic %. The XRD pattern of all films showed ZnO hexagonal wurtzite structure and the morphology showed homogeneous structure/texture and pinhole-free with adding Mg content. It was found that Mg2+ ions do not change conductivity of ZnO films due to the partial substitution of Zn2+ ion by the same valence Mg2+ ion. For optical properties, all films showed high transmittance over 80% and absorbance about 0.01 in visible and near infrared regions. Moreover, the Mg dopant affects on a shift of the absorption edge in transmittance spectra of the films to a lower wavelength in ultraviolet region and increases the band gap of the samples.
Effect of MnFe2O4 and the Heat Treatment Temperature on the Bioactive Glass Properties
Authors: Boonchoo Thanaporn , Intawin Pratthana , Leenakul Wilaiwan
Published: May 2016

In this study, the effects of heat treatment temperatures on structural and magnetic properties in MnFe2O4(MF)/SiO2-Na2O-CaO-P2O5 (bioglass) bioactive glass ceramics were investigated. The MF/SiO2-Na2O-CaO-P2O5 bioactive glass ceramics were fabricated under various heat treatment temperatures in a range of 600-1000 °C. X-ray diffraction (XRD) technique, the scanning electron microscopy (SEM) and transmission electron microscopy (TEM) are used to characterize phase and microstructure. The magnetic properties were determined from Vibrating Sample Magnetometer (VSM). The X-ray diffraction peaks presented two major crystalline phases: MnFe2O4 and Na2Ca2Si3O9. It was found that the heat treatment temperatures are the most influential parameter on microstructure and magnetic properties of the bioactive glass ceramics. The highest magnetic properties of studied ceramics were found in the sample heated at 1000 °C with adding 20 wt%. MF. The microstructural properties of the studies samples were investigated and the results were then correlated with the characteristics of heat treatment temperatures as well as the microstructure of the bioactive glass ceramic.
Effect of SrTiO3 Nano-Crystals on the Dielectric Properties of Na0.47K0.47Li0.06NbO3 Ceramics by Seed-Induced Method
Authors: Intatha Uraiwan , Sujarittangtham Krit , Eitssayeam Sukum
Published: May 2016

A solid-state reaction method is generally used to fabricate ceramics. This work studies the influence of heterogenous nano-crystallites on electrical properties of lead free Na0.47K0.47Li0.06NbO3 (NKLN) ceramics by adding SrTiO3 nano-crystals as the initial phase of reaction. The lead-free piezoelectric ceramics were synthesized by the seed-induced method. The SrTiO3 nano-crystals used as seeds were prepared by molten salt technique. The seed content was varied from 0 to 10.0 mol%. The investigation reports microstructure and electrical properties of ceramics. The XRD showed a mixed tetragonal and orthorhombic phase structure. Tc decreasing with increased SrTiO3nano-crystal concentration.
Evaluation of Electrostatic Charge of Inorganic Pigments Coated by Silanes for Laser Beam Printer
Authors: Kim Geun Hee , Pee Jae Hwan , Kim Yoo Jin , Punsukumtana Lada , Hwang Hae Jin
Published: May 2016

LBP has six steps, which are charging, exposure, development, transfer, fusing, cleaning and discharge, for the printing product. In these steps, we focused on the development step for the source of submicron inorganic pigments. The toner is a negatively charged combination of inorganic particles. A control blade holds the toner at a micro size distance from the drum. The inorganic pigment then moves from the control blade to the more positively charged latent image on the drum. The image in static electricity needs to be developed – made visible. The developer introduces small particles of toner onto the static-charged surface of the drum. In this study inorganic pigments were coated by functional silanes to provide particles with the electrostatic charge. The coating thickness and kinds of silanes were changed to evaluate the electrostatic charge of coated pigments. After coating process, the electrostatic charge of inorganic pigments coated with silanes were evaluated by the Faraday’s device. We will introduce the effect of 3-(N-phenylamino) propyltrimethoxy silane and phenyl tris (methylethylketoxime) silane coating on the electrostatic charge of inorganic pigments.
Properties of Geopolymer Paste from Fly Ash Blended with Metakaolin as Pervious Concrete
Authors: Boonanunwong Phachongkit , Keawpapasson Pimpawee , Tippayasam Chayanee , Thavorniti Parjaree , Chindaprasirt Prinya , Chaysuwan Duangrudee
Published: May 2016

The purpose of this research was to study pervious geopolymer concrete with different amounts of lignite fly ash (F), metakaolin (M), sodium silicate (NS) and 8 mol/L sodium hydroxide (NH) solution. Constant NS/NH ratio of 0.5, three alkali liquid/pozzolan (L/P) ratios viz., 0.5, 0.6 and 0.7 and pozzolan to coarse aggregate ratio of 1:8 were used. The compressive strengths of 50×50×50 mm3 cube specimens were tested at the age of 28 days. In addition, compressive strengths of 100 mm in diameter and 200 mm in height cylindrical specimens were tested at the age of 7, 14, 21 and 28 days. The chemical compositions and microstructures of specimens were characterized by X-Ray Diffraction (XRD) and Scanning Electron Microscope (SEM), respectively.The mixture with 50%F+50%M and L/P ratio of 0.7 was the best proportion for pervious geopolymer concrete according to the compressive strength, good permeability and microstructural images. The bond of Si-O-Al and Si-O-Si characterized by Fourier Transform Infrared Spectroscopy (FTIR) spectra confirmed the developed geopolymeric structure.
Analytical Study of Ancient Pottery from the Archaeological Site of Ban Bo Suak from Nan Province, Thailand
Authors: Malee Usanee , Thiansem Sakdiphon
Published: May 2016

Ban Bo Suak pottery sherds were analyzed by using X-Ray Fluorescence, X-Ray Diffraction and Scanning Electron Microscope. The samples JQA.SH1, FQB.SH3, PQC.SH5 and NQD.SH7, showed that phase structure were quartz, tridymite and mullite phase. It was confirmed that sherds were fired at high temperature more than 1000 °C. As a result, they made the body and glaze compacted and turned into stoneware at high temperature. SEM images of surface showed the middle layers between glaze and body for JQA.SH1 and FQB.SH3. The decoration techniques were glazed and slip layer between bodies and glaze.
Lampang Raw Material Characterization to Assess the Suitability for Ceramics Industry
Authors: Somrang Parinya , Wannagon Anucha , Sornlar Watcharee , Choeycharoen Pattarawan , Prasanphan Sitthisak , Shongkittikul Witaya
Published: May 2016

Lampang, a province in northern Thailand, is the important source of ceramics raw materials, such as kaolin, pottery stone, and ball clay. This study aims to investigate the new ceramics bodies by using these local raw materials. About 50 samples from 15 sources were collected to analyze the chemical composition, mineral composition, and physical properties. Kaolin samples principally consisted of quartz and kaolinite. Its greyish color after firing at 1200 °C made it suitable for stoneware product that does not require white body. The principal ball clay mineral is kaolinite, associated with illite and quartz. All ball clay samples are high strength, which are suitable for tableware production. Pottery stone which can be found at Kaolin deposit, showed a mixed mineralogy of quartz, albite, and muscovite, while some samples showed the presence of kaolinite. It showed significantly low on shrinkage. Pottery stone are widely used as flux in both ceramics body and glaze. These analyzed characteristics were put into the ceramics raw materials database which can be searched on-line. This data is useful for the researching of ceramics body compositions with mainly contained raw materials from Lampang.
Influence of Silane Coupling Agent and Nano-Filler on the Properties of Dental Resin Composite Cements
Authors: Khongwong Wasana , Keawsupsak Kanungnuch , Daungdaw Saengdoen , Siridamrong Pornpen , Boonruang Arjin
Published: May 2016

Dental resin composite cements were prepared with simply mixing method of Part A and Part B. The material components in Part A were composed of Bis-GMA, TEDGMA, 4-META, SiO2 nanopowders and BPO. The components in Part B were Bis-GMA, TEDGMA, 4-META, SiO2 nanopowders and 2,2¢-(4-methylphenylimino) diethanol. Before using SiO2 nano-filler in the formulation of Part A and Part B, it had to be coated with methacryloxypropyltrimethoxysilane (MPS) which served as a silane coupling agent. Therefore, the optimum amount of MPS (1, 1.2, 1.5 and 2%) and SiO2 nano-filler (20, 27.27 and 33.33 wt%) used to fabricate the composites were investigated. The homogeneous mixture of Part A and Part B at mass fraction of 1:1 was formed into the bar shape with dimension of 25 mm x 2.0 mm x 2.0 mm and then cured under light source for 20 s. Then flexural strength was measured using the universal testing machine. Depth of cure was tested using mould which was perforated in cylindrical shape of 6 mm in depth and of 4 mm in diameter. The result showed that composite with 27.27 wt% of salinized SiO2 nanopowders by 1.5% of MPS showed the highest flexural strength of 65 MPa and depth of cure of more than 5 mm which were accepted according to ISO 4049. This study could be concluded that using a proper amount of MPS to silanize SiO2 nanopowders and using an optimum amount of SiO2 nanopowders significantly improved the flexural strength of dental resin composite cements.
The Effect of β-SiC Nanowires on the Properties of Al2O3 Composites
Authors: Khongwong Wasana , Busabok Chumphol
Published: May 2016

To investigate the effect of adding b-SiC nanowires on the properties of the Al2O3 matrix composites, four different amounts of SiC nanowires, 0.05, 0.1, 0.2 and 0.25 wt% were mixed with Al2O3 powder. All mixtures were ball-milled and dried in an oven at a temperature of 120°C. The Al2O3-SiC mixtures were uniaxially pressed into pellets under 5 MPa and were then isostatically cold-pressed (CIP) under a pressure of 200 MPa. Specimens (13 mm in diameter and 2.5 mm in thickness) were sintered in a tube furnace at the temperature of 1400°C for 1 h in Ar atmosphere. Physical and thermal properties of pellet composites were characterized. The bar shape specimens with dimension of 3 mm x 4 mm x 35 mm were prepared for four-point bending test. The relationship between thermal conductivity and flexural strength versus grain connection of composites have been investigated. The results showed that the composites with adding SiC nanowires at 0.05-0.2 wt% possessed lower thermal conductivity than those monolithic Al2O3 specimens. However, the thermal conductivity of the composite specimens with 0.25 wt% SiC nanowires became higher than those of monolithic Al2O3 specimens. The flexural strengths of the composites gradually decreased with the increasing amount of SiC nanowires.
Novel Soft Chemical Synthesis Methods of Ceramic Materials
Authors: Toda Kenji , Kim Sun Woog , Hasegawa Takuya , Watanabe Mizuki , Kaneko Tatsuro , Toda Ayano , Itadani Atsushi , Sato Mineo , Uematsu Kazuyoshi , Ishigaki Tadashi , Koide Junko , Toda Masako , Kudo Yoshiaki , Masaki Takaki , Yoon Dae Ho
Published: May 2016

We report novel soft chemical synthesis method, solid hydratethermal reaction (SHR) method as a new soft chemistry. This method is very simple and can synthesize the ceramic materials just by storing the mixture of raw materials added a small amount of water in a reactor at low temperature below 373 K. For example, nanosize YVO4 (under 100 nm in diameter) was obtained using the SHR method.
Effect of Porosity and Pore Size on Microstructures and Mechanical Properties of Metakaolin Blended with Ca(OH)2 and PLA as Porous Geopolymers
Authors: Tippayasam Chayanee , Boonanunwong Phachongkit , Calvez Jocelyn , Thavorniti Parjaree , Chindaprasirt Prinya , Chaysuwan Duangrudee
Published: May 2016

Geopolymer is generally made of pozzolanic materials and alkali activators such as sodium alkali or potassium alkali. It can be solidified at ambient temperature to be developed as construction materials. Polylactic acid (PLA) was chosen to create pores in order for porous geopolymers. In this research, the porous geopolymer was developed either to reduce the weight of materials or to be utilized as thermal insulation materials. It was performed by metakaolin (MK), calcium hydroxide (Ca(OH)2), 10 molar potassium hydroxide (10M KOH) and potassium silicate (K2SiO3) for geopolymer pastes. These geopolymer pastes were mixed with 40 wt%, 50 wt% and 60 wt% of PLA and fired at 550°C for 6 h., therefore, pores inside geopolymer structure were found. Consequently, those geopolymers were characterized the mechanical properties e.g. compressive and flexural strength by Universal Testing Machine (UTM), microstructures by Scanning Electron Microscope (SEM), chemical compositions as functional groups by Fourier Infrared Spectroscope (FTIR). Furthermore, the pore size, bulk density, apparent porosity and thermal conductivity coefficient of geopolymers were analyzed. The results presented that the quantity of PLA affected the compressive strength and porosity of geopolymers. In conclusion, our porous geopolymer with 40 wt% PLA gave the highest strength.
Turning Electric Arc Furnace Dust Waste into Oil Spot Ceramic Glaze
Authors: Buggakupta Wantanee , Tianthong Chanyanud , Jiemsirilers Sirithan
Published: May 2016

Electric Arc Furnace (EAF) is commonly used in steel recycling industries. Apart from steel metal product, a waste in the form of dust is also produced and so called EAF dust. The fine particulates mainly contain zinc-iron oxides along with a small amount of heavy metals like chromium and lead, and have been categorized as a toxic waste. Proper treatments can be crucially required in order to recover crude zinc oxide and iron oxide from the dust; however, no practical recycling plants have been now readily operated in Thailand. To reduce its toxicity, EAF dust could be mixed with silica-based materials and vitrified into glass. Therefore, EAF dust can possibly be employed as a ceramic glaze raw material. This work pointed out how to make decorative “oil spot” ceramic glaze by substitution of EAF dust for a conventional iron oxide. The prepared glaze mixtures were applied over the ceramic bodies and fired at 1250 °C in oxidation atmosphere. The as-fired glaze appearances with tiny and silvery crystals floating over dark brown based-glaze were exhibited. Phase content and characteristics of the obtained glaze were analyzed. The roles of zinc oxide to iron oxide ratios on oil spot and crystal generation was concerned. A comparison of oil spot effects due to different iron oxide sources was presented and discussed. Oil spot glaze made from a combination of EAF dust and iron oxide powder was also proposed.
High Reliability Electronics for Demanding Aircraft Applications – An Overview
Authors: Brewer Roger
Published: May 2016

The primary form of generated power on any typical aircraft (Tactical, Airlift, Commercial) requires conversion in multiple different forms (voltage levels, aircraft compliant frequency) and at various power levels to meet the total needs of the vehicle. DC:AC Power Conversion (Inverters), AC-DC Generator (conditioning) electronics, AC-AC frequency conditioning and DC:DC Power Conversion are all forms of conversion within the power system (primary, secondary tiers) typical of any aircraft. Additionally, within the power distribution network often solid state power switches in later generation aircraft and fighters are used to control and manage power (control power ramp-up for example) to loads and isolate electrical faults. The conditioning, conversion and control of this power with high reliability devices can often occur in more extreme environments (high temperatures, high vibration and confined spaces) and can present challenging issues for aerospace and specifically aircraft. Weight objectives can further add to the challenges. This paper will discuss, at largely a level based on acquired and compiled lessons learned, some of the aforementioned challenges including the susceptibility to both electrically and mechanically induced failure modes in power devices encountered in aircraft.

The paper will also discuss the notion that while Wide Band Gap (WBG) technology may be the right answer in some/many applications, it may not be the answer in achieving high reliability given a specific combination of application and operating conditions. Reliability issues can be focused around: a) packaging optimization, b) manufacturing tolerances and c) selecting the right vendor to do the job. Further, the ability to receive adequate forms of cooling from the aircraft (if not otherwise constrained and if cooling margins permit) to power electronics will also be discussed as an obvious and significant driver in maintaining high reliability and integrity in more demanding (and higher power) applications. Trade assessments that can occur with specific generator electronics will be discussed at a non-specific, and generalized, level.

The main body of the paper will be concluded with a discussion on the potential application of WBG technology in a variety of applications mentioned for aircraft while pointing out unique aspects that may be relevant in the future adoption of this technology. Finally, a conclusion will be provided reiterating various points throughout the paper and areas of potential follow-on activity.
Effect of isothermal aging at 250 °C on shear strength of joints using Au nanoporous bonding for die attach
Authors: Nishikawa H. , Matsunaga K. , Kim M-S. , Saito M. , Mizuno J.
Published: May 2016

High-temperature joining is a key technology for electronic component assembly and other high-temperature applications. Recently, focusing on the sintering behavior of metal particles, the joining process using a nanoparticle paste has been proposed as an alternative to establish a high-temperature joining technology. In this study, a feasibility study has been conducted to determine whether an Au nanoporous sheet can be used for joint material. We evaluated the effect of isothermal aging at 250 °C on shear strength of joints using an Au nanoporous sheet. The shear strength of the joint after isothermal storage at 250 °C for 1000 h was more than 25 MPa.
Design and Testing of a High Temperature Inverter
Authors: Krishnamurthy Shashank , Savulak Stephen , Wang Yang
Published: May 2016

The emergence of wide band gap devices has pushed the boundaries of power converter operations and high power density applications. It is desirable to operate a power inverter at high switching frequencies to reduce passive filter weight and at high temperature to reduce the cooling system requirement. The paper describes the design and test of a power electronic inverter that converts a fixed input DC voltage to a variable voltage variable frequency three phase output. The component selection and design were constrained such that the inverter can operate at an ambient temperature of 170°C. The design of the key functional components such as the gate drive, power module, controller and communication will be discussed in the paper. Test results for the inverter at high temperature will also be presented.