bluuebunny/crossref_metadata_2025 huggingface dataset:
Post-main-sequence Evolution of Icy Minor Planets. II. Water Retention and White Dwarf Pollution around Massive Progenitor Stars
Authors: Malamud Uri , Perets Hagai B.
Published: June 2017

Most studies suggest that the pollution of white dwarf (WD) atmospheres arises from the accretion of minor planets, but the exact properties of polluting material, and in particular the evidence for water in some cases, are not yet understood. Here we study the water retention of small icy bodies in exo-solar planetary systems, as their respective host stars evolve through and off the main sequence and eventually become WDs. We explore, for the first time, a wide range of star masses and metallicities. We find that the mass of the WD progenitor star is of crucial importance for the retention of water, while its metallicity is relatively unimportant. We predict that minor planets around lower-mass WD progenitors would generally retain more water and would do so at closer distances from the WD than compared with high-mass progenitors. The dependence of water retention on progenitor mass and other parameters has direct implications for the origin of observed WD pollution, and we discuss how our results and predictions might be tested in the future as more observations of WDs with long cooling ages become available.
The Parametric Decay Instability of Alfvén Waves in Turbulent Plasmas and the Applications in the Solar Wind
Authors: Shi Mijie , Li Hui , Xiao Chijie , Wang Xiaogang
Published: June 2017

We perform three-dimensional ideal magnetohydrodynamic (MHD) simulations to study the parametric decay instability (PDI) of Alfvén waves in turbulent plasmas and explore its possible applications in the solar wind. We find that, over a broad range of parameters in background turbulence amplitudes, the PDI of an Alfvén wave with various amplitudes can still occur, though its growth rate in turbulent plasmas tends to be lower than both the theoretical linear theory prediction and that in the non-turbulent situations. Spatial–temporal FFT analyses of density fluctuations produced by the PDI match well with the dispersion relation of the slow MHD waves. This result may provide an explanation of the generation mechanism of slow waves in the solar wind observed at 1 au. It further highlights the need to explore the effects of density variations in modifying the turbulence properties as well as in heating the solar wind plasmas.
Dynamics of Porous Dust Aggregates and Gravitational Instability of Their Disk
Authors: Michikoshi Shugo , Kokubo Eiichiro
Published: June 2017

We consider the dynamics of porous icy dust aggregates in a turbulent gas disk and investigate the stability of the disk. We evaluate the random velocity of porous dust aggregates by considering their self-gravity, collisions, aerodynamic drag, turbulent stirring, and scattering due to gas. We extend our previous work by introducing the anisotropic velocity dispersion and the relaxation time of the random velocity. We find the minimum mass solar nebula model to be gravitationally unstable if the turbulent viscosity parameter α is less than about

. The upper limit of α for the onset of gravitational instability is derived as a function of the disk parameters. We discuss the implications of the gravitational instability for planetesimal formation.
Measuring Velocities in the Early Stage of an Eruption: Using “Overlappogram” Data from Hinode EIS
Authors: Harra Louise K. , Hara Hirohisa , Doschek George A. , Matthews Sarah , Warren Harry , Culhane J. Leonard , Woods Magnus M.
Published: June 2017

In order to understand the onset phase of a solar eruption, plasma parameter measurements in the early phases are key to constraining models. There are two current instrument types that allow us to make such measurements: narrow-band imagers and spectrometers. In the former case, even narrow-band filters contain multiple emission lines, creating some temperature confusion. With imagers, however, rapid cadences are achievable and the field of view can be large. Velocities of the erupting structures can be measured by feature tracking. In the spectrometer case, slit spectrometers can provide spectrally pure images by “rastering” the slit to build up an image. This method provides limited temporal resolution, but the plasma parameters can be accurately measured, including velocities along the line of sight. Both methods have benefits and are often used in tandem. In this paper we demonstrate for the first time that data from the wide slot on the Hinode EUV Imaging Spectrometer, along with imaging data from AIA, can be used to deconvolve velocity information at the start of an eruption, providing line-of-sight velocities across an extended field of view. Using He ii 256 Å slot data at flare onset, we observe broadening or shift(s) of the emission line of up to ±280 km s−1. These are seen at different locations—the redshifted plasma is seen where the hard X-ray source is later seen (energy deposition site). In addition, blueshifted plasma shows the very early onset of the fast rise of the filament.
Tidally Induced Bars in Dwarf Galaxies on Different Orbits around a Milky Way-like Host
Authors: Gajda Grzegorz , Łokas Ewa L. , Athanassoula E.
Published: June 2017

Bars in galaxies may develop through a global instability or as a result of an interaction with another system. We study bar formation in disky dwarf galaxies orbiting a Milky Way-like galaxy. We employ N-body simulations to study the impact of the initial orbital parameters: the size of the dwarf galaxy orbit, and the inclination of its disk with respect to the orbital plane. In all cases, a bar develops in the center of the dwarf during the first pericenter on its orbit around the host. Between subsequent pericenter passages, the bars are stable, but at the pericenters, they are usually weakened and shortened. The initial properties and details of the further evolution of the bars depend heavily on the orbital configuration. We find that for the exactly prograde orientation, the strongest bar is formed for the intermediate-sized orbit. On the tighter orbit, the disk is too disturbed and stripped to form a strong bar. On the wider orbit, the tidal interaction is too weak. The dependence on the disk inclination is such that weaker bars form in more inclined disks. The bars experience either a very weak buckling or none at all. We do not observe any secular evolution, possibly because the dwarfs are perturbed at each pericenter passage. The rotation speed of the bars can be classified as slow (R
CR/l
bar ∼ 2–3). We attribute this to the loss of a significant fraction of the disk rotation during the encounter with the host galaxy.
A Radio-to-mm Census of Star-forming Galaxies in Protocluster 4C23.56 at Z = 2.5: Gas Mass and Its Fraction Revealed with ALMA
Authors: Lee Minju M. , Tanaka Ichi , Kawabe Ryohei , Kohno Kotaro , Kodama Tadayuki , Kajisawa Masaru , Yun Min S. , Nakanishi Kouichiro , Iono Daisuke , Tamura Yoichi , Hatsukade Bunyo , Umehata Hideki , Saito Toshiki , Izumi Takuma , Aretxaga Itziar , Tadaki Ken-ichi , Zeballos Milagros , Ikarashi Soh , Wilson Grant W. , Hughes David H. , Ivison R. J.
Published: June 2017

We investigate gas contents of star-forming galaxies associated with protocluster 4C23.56 at z = 2.49 by using the redshifted CO (3–2) and 1.1 mm dust continuum with the Atacama Large Millimeter/submillimeter Array. The observations unveil seven CO detections out of 22 targeted Hα emitters (HAEs) and four out of 19 in 1.1 mm dust continuum. They have high stellar mass (

M
⊙) and exhibit a specific star-formation rate typical of main-sequence star-forming galaxies at

. Different gas-mass estimators from CO (3–2) and 1.1 mm yield consistent values for simultaneous detections. The gas mass (

) and gas fraction (

) are comparable to those of field galaxies, with

))

, where

is the CO-to-H2 conversion factor and A(Z) is the additional correction factor for the metallicity dependence of

, and

from CO (3–2). Our measurements place a constraint on the cosmic gas density of high-z protoclusters, indicating that the protocluster is characterized by a gas density higher than that of the general fields by an order of magnitude. We found

with the CO(3–2) detections. The five ALMA CO detections occur in the region of highest galaxy surface density, where the density positively correlates with global star-forming efficiency (SFE) and stellar mass. Such correlations possibly indicate a critical role of the environment on early galaxy evolution at high-z protoclusters, though future observations are necessary for confirmation.
TeV Cosmic-Ray Anisotropy from the Magnetic Field at the Heliospheric Boundary
Authors: López-Barquero V. , Xu S. , Desiati P. , Lazarian A. , Pogorelov N. V. , Yan H.
Published: June 2017

We performed numerical calculations to test the suggestion by Desiati and Lazarian that the anisotropies of TeV cosmic rays may arise from their interactions with the heliosphere. For this purpose, we used a magnetic field model of the heliosphere and performed direct numerical calculations of particle trajectories. Unlike earlier papers testing the idea, we did not employ time-reversible techniques that are based on Liouville’s theorem. We showed numerically that for scattering by the heliosphere, the conditions of Liouville’s theorem are not satisfied, and the adiabatic approximation and time-reversibility of the particle trajectories are not valid. Our results indicate sensitivity to the magnetic structure of the heliospheric magnetic field, and we expect that this will be useful for probing this structure in future research.
Wolfâ€™s Panniculitis
Authors: Chokoeva Anastasiya Atanasova , Tchernev Georgi
Published: June 2017

A 28-year-old male patient, presented with a one-week history of pain and itching on the skin of the left upper leg. Erythematous indurated, warm and painful on palpation, subcutaneous plaques and nodules were clinically observed, affecting the skin of the left upper leg, within a recent black-wolf tattoo. The diagnosis of traumatic panniculitis with superposed bacterial infection, provoked by a wolf tattoo was made.Â  The patient underwent 7-days systemic antibiotic treatment regimen and topical application of iodine povidone unguent under occlusion for 7 days. Significant alleviation of the subjective complaints was achieved within the first week, with a total clinical resolution of the symptoms. The role of the procedure as a source of trauma for subcutaneous inflammation (traumatic panniculitis) and the contamination of the equipment or the staff (infective panniculitis) in simultaneously triggering of the pathogenetic chain of the reported Wolfâ€™s panniculitis could be present.
Comparative Study of Clinical, Ultrasonographic, Conventional Imaging, and Ultra-Wide-Field Fundus for Measurements of the Longest Basal Diameter of Choroidal Tumors
Authors: Ayres Bernadete , Stacey Andrew , Grant Joshua , McClendon Tanya , Demirci Hakan
Published: June 2017

BACKGROUND AND OBJECTIVE:

To compare the maximum basal diameter of choroidal tumors measured by clinical estimation and different imaging methods in intraocular tumors for therapeutic planning.

PATIENTS AND METHODS:

Retrospective, observational study reviewing the measurements of the longest basal diameter of choroidal tumors using the clinical estimation based on the indirect ophthalmoscopy, ophthalmic ultrasonography, 50° fundus imaging, ultra-wide-field imaging color composite, red laser, and green laser.

RESULTS:

The study included measurements of 74 tumors in 74 eyes. Correlation analysis between imaging measurements and clinical estimates led to following results: ultra-wide-field imaging measurements were 2.7% to 7.1% smaller than estimated clinical measurements by indirect ophthalmoscopy; followed by ultrasound, with 10.9% smaller measurements; and 50° fundus imaging, measuring 25.8% smaller than clinical estimates. When evaluating the precision of tumor measurements, ultrasound resulted in the highest precision, with a standard error of 1.6 mm compared to clinical estimates, followed by other imaging techniques with standard errors ranging from 2.4 mm to 3.0 mm. Determination of tumor margins with the ultrasound technique was better defined when subretinal fluid was present, or when the height of the tumor was greater than 3 mm.

CONCLUSION:

The authors' results suggest that measurements of the longest basal diameter of choroidal tumors can be accurately performed with ultrasound and ultra-wide-field color composite or red laser images. In the presence of subretinal fluid or tumor height above 3 mm, ultrasound can better delineate tumor margins.

[
Ophthalmic Surg Lasers Imaging Retina
. 2017;48:459–464.]
Optical Coherence Tomography Angiography in the Multimodal Imaging Evaluation of Interferon-Associated Retinopathy: A Case Report
Authors: Mastropasqua Leonardo , Borrelli Enrico , Amodei Francesco , Aharrh-Gnama Agbeanda , Toto Lisa , Mattei Peter A. , Mastropasqua Rodolfo
Published: June 2017

The authors present the case of a 59-year-old woman in treatment with interferon alfa-2b for stage IV melanoma and widespread metastases who presented with interferon-associated retinopathy. An ocular examination revealed multiple retinal cotton-wool spots and hard exudates. Interferon treatment was suspended. The patient was followed up for 5 months following the baseline visit by means of en face optical coherence tomography (OCT), spectral-domain OCT, and OCT angiography. Multimodal imaging was useful in the follow-up of this condition, permitting the characterization of all the lesions hallmarking the interferon-retinopathy and showing that this illness was related to a reduction of the retinal vascular perfusion.

[
Ophthalmic Surg Lasers Imaging Retina.
2017;48:498–504.]
OCT Angiography: Assessment of Retinal Ischemia in Susac's Syndrome
Authors: Spiess Karina , Martínez Jesús Ramón García
Published: June 2017

Descriptive study of two patients affected by Susac's syndrome (SuS) focusing on the chronic retinal tissue damage assessed by optical coherence tomography (OCT) and OCT angiography (OCTA). To the authors' knowledge, this is the first case series reporting OCTA in SuS. OCTA imaging revealed secondary hypoxia due to branch retinal artery occlusion of the deep capillary plexus, with additional involvement of the superficial capillary network in one case. OCTA is a noninvasive and quick diagnostic tool for detecting hypoxic retinal damage in SuS. With further development of OCTA, as wide-field imaging, a better understanding of the retinal and choroidal blood supply will be gained.

[
Ophthalmic Surg Lasers Imaging Retina.
2017;48:505–508.]
El periódico anarquista Nuestra Tribuna. Un diálogo transnacional en América Latina
Authors: Fernández Cordero Laura
Published: June 2017

El presente artículo se inscribe en el marco del fuerte impacto del enfoque transnacional en la historiografía de América Latina y en los estudios sobre el anarquismo. Particularmente, sigue la línea de los trabajos que estudian la prensa anarquista como soporte de las redes trasnacionales. Su objetivo central es analizar el caso del periódico Nuestra Tribuna y reponer parte de su diálogo con grupos y publicaciones anarquistas de varios países de América Latina.
Hacer política en un pueblo azucarero: prácticas a ras del suelo en la transición del radicalismo al peronismo. Bella Vista (Argentina)
Authors: Lichtmajer Leandro , Gutiérrez Florencia
Published: June 2017

Este artículo se desarrolló en el marco del Programa de Investigación «Estado, economía y sociedad en Tucumán. Un enfoque de larga duración, siglos XIX-XX», financiado por la Secretaría de Ciencia, Arte e Innovación Tecnológica de la Universidad Nacional de Tucumán (código H552/1). El objetivo del artículo es analizar las prácticas políticas en el pueblo azucarero de Bella Vista (Argentina) en la transición del radicalismo al peronismo (1935-1946). En este sentido, estudia la reconfiguración de las redes partidarias locales, la transformación de los liderazgos y sus anclajes sociales, así como la articulación de organizaciones de base que moldearon las formas de hacer política en una coyuntura clave de la historia argentina del siglo veinte.
Habitat structure and zonation patterns of northwestern Mediterranean shoreline strands
Authors: Mariani Simone , Pinedo Susana , Terradas Marc , Cefalì Maria Elena , Chappuis Eglantine , Ballesteros Enric
Published: June 2017

We studied the habitat structure (macrofaunal assemblages and bottom types) and zonation patterns of 29 unvegetated shoreline strands along the 900-km coast of Catalonia (NW Mediterranean Sea). Organisms were sampled with grabs, pitfall traps, sticky traps, clam nets and spades to ensure capture of the different proportions of macrofaunal assemblages from the supra-, medio- and infralittoral levels. We collected 211 taxa: 194 animals and 17 algae. The most abundant and dominant organisms collected with van Veen grabs were Nematoda, Oligochaeta and Collembola at the supralittoral level; the polychaetes Saccocirrus spp. and Pisione remota, the amphipod Corophium orientale, Nematoda, and Turbellaria at the mediolittoral level; and Nematoda at the upper infralittoral level. SIMPER analysis revealed great dissimilarity between the organisms inhabiting the supralittoral and the other littoral levels. Regarding the epifauna, the sticky traps used at the supralittoral level mainly collected Collembola, which were nearly absent in pitfall traps. The qualitative study performed with a clam net and a small spade revealed that Nematoda, Saccocirrus spp., Turbellaria, Nemertea and the polychaete P. remota were the most abundant animals at both the medio- and the infralittoral levels and no differences were found between these levels. Different qualitative sampling methodologies showed that in fine sediments the bivalves Donax trunculus and D. semistriatus determined more than 97% of dissimilarity from coarse-sand sites. Richness increased in protected sandy and cobble shores. Littoral level and bottom-type features were only to a certain extent valid indicators of specific biotic components for a specific habitat.
Projection of Extreme Temperature over Northern Thailand by WRF Model
Authors: Ratjiranukool Pakpoom , Ratjiranukool Sujittra
Published: June 2017

Weather Research and Forecasting (WRF) model was a tool for simulating daily air surface temperatures over northern Thailand. The model was forced by the Community Climate System Model Version 3 (CCSM3) during the baseline period (1990-1999) and the projected period (2016-2025) under the Intergovernmental Panel on Climate Change (IPCC) A1B scenario. Domain of study covers Indochina region with parent domain of 45 km and two nested domains of 15 km and 5 km, respectively. The daily minimum and maximum temperature simulations during baseline period were compared with station data provided by Thai Meteorological Department (TMD). Kalman filter method was applied to correct the systematic error of temperature simulations. Warming in minimum and maximum temperatures was found over northern Thailand which was less than global warming projection. The study indicated that the frequency of hot (cool) temperature extremes will increase (decrease) in the near future.
Characterization of Residues Involved in the Ash Quenching System: A Material Recycling Perspective
Authors: Inkaew Kanawut , Saffarzadeh Amirhomayoun , Shimaoka Takayuki
Published: June 2017

The Ash Quenching System has been widely used in the municipal solid waste incineration plant to cool down the bottom ash and to control the dust pollution. In this study, residues that were transferred to the ash quenching system, including the grate siftings and the unquenched bottom ash were investigated, as well as, the quenched bottom ash from the discharge point of the system. The characterization included particle size distribution analysis, chemical composition and mineralogical composition analyses. The results showed that the grate siftings, the unquenched bottom ash and the quenched bottom ash were made up of different proportions of slag, relic metal, glass, ceramics and unburnt organic matter. All residues resembled to natural sand and fine aggregates with content of CaO, SiO2, Al2O3 and Fe2O3 of about 37-52%, 17-28%, 10-16%, and 4-13% by mass, respectively. The quenched bottom ash had the potential to be used as a raw material for the engineering applications such as road construction and cement production likewise grate siftings and the unquenched ash. However, the grate siftings and the unquenched bottom ash contained Cl up to 2.3 % by mass, and the quenched bottom ash was essentially dominated by hydrate phases such as Friedel’s salt/hydrocalumite, thus further treatment is significantly required prior to any applications.
Solid Waste Management Services in Pathio Subdistrict Municipality, Chumphon Province
Authors: Boonyaroj Varinthorn , Unprasit Onanong , Saiuparad Sunisa
Published: June 2017

This research was investigated the solid waste management services and waste collection system of Pathio Subdistrict Municipality, Chumphon province through the application of quantitative research using an information collected from 2011 to 2014. The population density in the year 2011 to 2015 was found 719 to 736 person/km2. Solid waste quantities were analyzed through the Lyapunov Exponent (LE) together with predictability method. A number of wastes in each year in this area were quite similar. This research provided the situation of solid wastes management in Pathio subdistrict municipality. Public participation is important for sustainable solid waste management with 3Rs concept were necessary for people practice and reducing the volume of wastes in their daily life for sustainable solid waste management service in this community. For enhancing positive attitudes among the people while conducting activities which targeted on wastes reduction such as waste banks. Moreover, solid wastes management system helped to increase people’s awareness on the importance of sorting waste at source.
In-Vessel Composting of Municipal Solid Waste with Varied Press Air and Organic Fraction
Authors: Boonyaroj Varinthorn , Khonthee Melin , Maneewong Nuanjira , Doungkaew Chatchai
Published: June 2017

This research aims to evaluate the performance of laboratory-scale in-vessel composting bioreactor for the organic wastes fraction of municipal solid wastes in Faculty of Science and Technology, Rajamangala University of Technology Phra Nakhon, Bangkok. The bioreactor was special designed and used for this research with working volume of the reactor was 10 L, and it was operated with varied press air and organic wastes fraction. Obtained results showed that organic fraction of municipal solid waste could be composted successfully in 20 days. The qualities of compost in terms of the ratio of carbon to nitrogen (C/N), temperature, pH value, moisture content (%M), total nitrogen (%N), potassium (K2O), phosphorus (P2O5), organic matter (%OM), and organic carbon (%OC) were investigated.
The Relationships among Microorganisms in Paddy Soil of Rice Varieties at Sanamchaikate, Chachoengsao
Authors: Nicomrat Duongruitai , Kanthang Paisan , Chamutpong Siriphatrc
Published: June 2017

The research was conducted to understand the diversity of microbial communities in the rice cultivars KDM 105 in the rice fields at Sanamchaikate, Chachoengsao Province. The culturing bacterial community in paddy soil before planting, during the planting and sowing of rice, and after rice collection as well as isolation of free nitrogen fixing bacteria under aerobic and anaerobic conditions were identified by molecular comparision of 16S small subunit rRNA genes as well as species diversity and their richness by Most Probable Number (MPN) method. Culturable bacterial isolates in the soil around the roots of rice varieties were determined for their physical appearances on the solid culture (Plate culturing method) and the microscopic observation under light microscope. It was found that bacteria in the paddy soil complemented with organic fertilizers and no pesticide application for over five years had a pH range from 5.2 to 5.5 cultivated jasmine rice, 8-9 log Units of free N2-fixing bacteria near the roots compared with those in other area having 4-5 log Units. Most of them were identified to be Pseudomonas sp. Microbacterium sp. Bacillus sp. Stenotrophomonas sp. and Burkholderia sp., by homology comparison of 16S rDNA gene at 98, 97, 99, 99.5, and 99%, respectively. This research revealed the recognizable complex and change in soil bacteria presented in paddy ecosystem. In any critical change of to the soil, the study of microbial diversity, compositions and their richness can be further useful for indicating proper soil management.
The Meridional Pressure Gradient Prediction by the Global Climate Model
Authors: Saiuparad Sunisa
Published: June 2017

The pressure gradient is a physical quantity that describes in which direction and at what rate the pressure changes the most rapidly around a particular location. The meridional pressure gradient can be prediction for the main forces acting on the air to make it move as wind. The randomly selected cases for this experiment are the Asian northeast monsoon downscaling for December 2049. The global climate model is the Bjerknes Centre for Climate Research (BCCR), University of Bergen, Norway. Bergen Climate Model (BCM) Version 2.0 (BCCR-BCM2.0). The data predictions are the A2 scenario and COMMIT scenario. In this research maximum Lyapunov exponent (MLE) and finite size Lyapunov exponent (FSLE) for every 24-hr interval of the meridional pressure gradient from the BCCR-BCM2.0 model are calculated. The results show that the meridional pressure gradient prediction by the BCCR-BCM2.0 is not sensitive to scenario.
Suitable Concentration of ZnO Nanoparticles Enhanced Biomaterial Synthesis and Plant Cell Protection
Authors: Chayaprasert Wilailack , Sompornpailin Kanokporn
Published: June 2017

Zinc oxide nanoparticles (ZnO NPs) has been reported on toxicity effects on environmental organisms. However, Zn is a plant essential microelement which is involved in various physiological functions. In this study, MS medium, adding 0, 10 and 20 mgL-1 ZnO NPs were used for culturing wild type (WT) and transgenic expressing PAP1 under tissue culture condition. Effects of ZnO NPs concentrations on the accumulations of total soluble sugar (TSS) and flavonoid biomaterials in WT and transgenic plants were analysis. Membrane stability of each plant was assayed by lipid peroxidation measurement. Malondialdehyde, a byproduct of the membrane lipid peroxidation, was presented. The result showed that both WT and transgenic grown in medium, adding ZnO NPs enhanced the accumulations of TSS and flavonoids. All of PAP1 transgenic lines had a better response under ZnO NPs concentration and elevated higher biomaterials than WT did. Medium adding 20 mgL-1 ZnO NPs affected the highest accumulation of both biomaterials especially in transgenic plant. Higher accumulation of biomaterials is presented in treatment adding ZnO NPs and plant membrane stability of this treatment is better than that of medium without ZnO NPs. However, medium with 10 mgL-1 ZnO NPs showed the proper result of plant membrane stability.
Plywood Production from Coconut Coir Fiber and Water Hyacinth
Authors: Boonyaroj Varinthorn , Srijab Mukda , Thiangsagul Monthira , Larpsongserm Monruedee
Published: June 2017

The plywood production from coconut coir fiber and water hyacinth was investigated to reduce the residue and be increased of value and to reduce the use of natural wood by using coir and water hyacinth which are pressed to be plywood production. LA - 35A TOA glue and natural powders were used for plywood adhesive. The plywood tests were found in this research. The water absorption, density, and bending strength test as per Japanese Industrial Standard (JIS A 5905) were evaluated in this research. The results showed that coconut coir fiber was suitable for plywood production and contained 1.93 percent of moisture content, 0.52 g per cm3 of density, and 86.5 percent of water absorption and 11.9 MPa of bending strength. The result showed that water absorption value of plywood made from coconut coir fiber and water hyacinth was quite high and this product suitable for use only indoor furniture. Moreover, these research was studied the biodegradation of plywood products that made from coconut coir fiber and water hyacinth.
Effect of Sodium Hydroxide Concentrations on Properties of Panicum repens for Pulp and Paper
Authors: Boonyaroj Varinthorn , Sanguanpak Samanya
Published: June 2017

Panicum repens is a species of grass known by many common names, including torpedo grass, creeping panic, panic rampant, couch panicum, wainaku grass, quack grass, dog-tooth grass, and bullet grass. The paper has been made from non-wood materials for long times. This research was used Panicum repens for made grass pulp as non-wood fiber. The influence of sodium hydroxide (NaOH) concentrations on properties of pulp from Panicum repens was investigated under room temperature. NaOH concentration levels were varied at 0%, 5%, 10%, 15%, and 20%, respectively. Moreover, Paper pulp from Panicum repens was observed by scanning electron microscope (SEM). This research has controlled the length of fiber approximately 0.5-2.5 cm before soaked with NaOH concentration at 1 hour and soak with water for controlled pH value at 7-8. Paper pulp was formed on a sieve. The result showed that color of paper pulp made from Panicum repens was light brown and green. SEM showed that NaOH concentration affects the physical properties of paper pulp. Moreover, true density of paper pulp was also investigated in this research.
Study on Air Permeability and Warmth Retention Ability of Polyurethane Foam Plying with Fabrics
Authors: Kan Chi Wai , Ko Clare Man Ching , Ariyakuare Kittisak , Changmuong Wasana , Mongkholrattanasit Rattanaphol
Published: June 2017

In this study, we evaluated warmth retention ability of polyurethane foam (non-laminated and laminated) plying with fabrics. The warmth retention ratio, measured by KES-F7, was used for expressing the thermal property of plied samples. Experimental results revealed that the warmth retention ratio of samples that were plied with fabrics were higher than the foams in plain (i.e. without plying with fabric). For non-laminated foams, the fabrics had generally increased the warmth retention ratio by 10%. For laminated foams, the increase was about 4 to 5% in the warm retention ratio. By comparing the warmth retention ratio between the non-laminated foams and laminated foams, laminated foams have higher heat retention power. Being a close-to-skin garment, the air permeability is an important factor to determine their usage. Thus, we examined the air permeability of the different samples and the results were discussed properly.
Fabrication NiAl/Cu Composite Powder for Thermal Spray Coating
Authors: Dejang Nuchjira
Published: June 2017

The NiAl/Cu feedstock powder was prepared by Cu coating on NiAl powder using electroplating technique. The NiAl (NS450, Metco Sulzer) powder was deposited Cu+ from CuSO4 solution at cathode with vary time process (60, 80 and 100 min). The microstructure and element of NiAl/Cu powders were investigated by scanning electron microscope (SEM) and energy dispersion of X-ray (EDX). The morphology of powder were appeared the Cu element holding all of surface NiAl particles. The chemical composition in powder using X-ray diffraction were presented the Cu phase with time process. The phase compounds were presented the Ni, Al and Cu phases. Then, it was appeared the new phase of Cu2O at 100 min time deposited. Therefore, it was low contentThe EDX analysis was supported the Cu cover on the surface NiAl powder. In SEM micrograph of NiAl/Cu cross-section coating were presented the completed structure coating of thermal spray technicque. In addition, the Cu content was improved melted particles by investigated increased lamellar of materials. The Cu lamella was distributed between Ni layers. It was confirmed that NiAl/Cu feedstock powder was fabricated by simple technique.
Beneficial Effects of Zinc Oxide Nanoparticles on Plant Regeneration of Vetiver Grass (Vetiveria zizanioides L. Nash)
Authors: Khunchuay Chonnikarn , Sompornpailin Kanokporn
Published: June 2017

Zinc is an essential micronutrient element for plant. Nowadays, Zinc oxide nanoparticles (ZnO NPs) are widely used and have been shown adverse effects to plant physiology. The optimal concentration of ZnO NPs added in plant regeneration medium (PRM) is studied in this experiment. Six-weeks old calli induced from the aseptic axillary buds of vetiver grass were cultured in PRM with various concentrations of ZnO NPs (5, 10, 20, 40 mgL-1). PRM containing 5, 10 mgL-1 ZnO NPs showed the highest percentage of plant regeneration frequency (95%) but did not have a statistic difference with other treatments. However, the averages of shoot length regenerated under both concentrations were 1.32-1.33 cm. These averages of shoot length had statistically different from averages of shoot length of the others. Moreover, calli regenerated under PRM containing 5 mgL-1 ZnO NPs condition showed the highest average number of shoots per callus (9.75 shoots) with a statistic difference. ZnO NPs at 20-40 mgL-1 in the PRM did not enhance the percentage of plant regeneration, but retarded calli development and shoot elongation. The optimal concentration of ZnO NPs in PRM has positive effects on regeneration and development of vetiver grass under tissue culture condition.
Influence of Currents and Electric Fields in YNMO Ceramics
Authors: Albutt Naphat , Pechprasarn Suejit , Sareein Thanapong
Published: June 2017

Development of ceramic materials is critical for new and improved electronic applications. Herein, the J-E response of Y2NiMnO6 (YNMO) ceramics composited by a solid state reaction method was investigated. Sintering temperature and time were found to have significant influence on the ceramics electrical properties. In particular, higher temperatures and longer sintering times resulted in more favourable dielectric properties of the YNMO ceramics. A current of 40 mA/cm2 at 20,000 mV/cm was obtained by sintering at 1300 °C for 12 hours, whereas a current of 9 mA/cm2 at 4000 mV/cm can be achieved by sintering at 1400 °C for 24 hours. These results will be useful for identifying applications for YNMO ceramics. The electrical properties of the YNMO ceramics can be tuned for different electronic components such as dry batteries and capacitors.
Effect of Sintering Method on the Microstructure and Dielectric Properties of Lead-Free BCZT Ceramics
Authors: Kantha Puripat , Bunthod Teerapat , Jansrabua Sasithron , Barnthip Naris , Tigunta Siriporn , Pengpat Kamonpan , Pisitpipathsin Nuttapon
Published: June 2017

Lead-free ceramic powders based on Ba0.85Ca0.15Zr0.1Ti0.9O3 (BCZT) were successfully fabricated by the conventional solid-state reaction method. Two kinds of sintering methods: zero-time sintering (ZTS) and conventional sintering (CS) were applied to obtain BCZT ceramics. The microstructure and dielectric properties of BCZT ceramics sintered from the ZTS and the CS method were systematically studied. It was found that the coarse-grained samples with grain sizes ~ 19-21 μm were obtained from the ZTS and the CS method. The CS method with a long time of dwelling was helpful for improving the dielectric properties of lead-free BCZT ceramics. The maximum dielectric constant of 9926 and low dielectric loss of 0.0108 were obtained at CS with 8h.
Radiation Dose Evaluation of Colorless Topaz by TL and ESR Spectroscopy
Authors: Nuamsrinuan Nisakorn , Kaewwiset Weeranuch , Limsuwan Pichet , Naemchanthara Kittisakchai
Published: June 2017

In the present work, colorless topaz was designed and developed a dosimeter for routine application. The samples were irradiated with gamma from 60Co at dose range 50 - 400 Gy and investigated by thermoluminescence (TL) and electron spin resonance (ESR). The TL grow curve of topaz were revealed two trapping levels at temperature 150 °C and 225 °C. The ESR signals of topaz shown that the g value at 1.966 and 2.012 due to Ti3+ and (AlO4)0 center, respectively. The intensities of TL and ESR were increased with increasing dose. The percentage error of dose from TL and ESR signal were 8 and 3, respectively. These experiment indicated that the colorless topaz could be used as a dosimeter.
Effects of NiO Nanoparticles on Physical and Mechanical Properties of BNKT Lead-Free Ceramics
Authors: Kruea-In Chatchai , Inthong Suchittra , Leenakul Wilaiwan
Published: June 2017

In this research, The effects of NiO nanoparticles on the physical and mechanical properties of Bi0.5(Na0.81,K0.19)0.5TiO3 (BNKT) were investigated. The ceramics were synthesized by solid state reaction technique. The powder of BNKT was calcined at 850 °C for 4 h. The ceramics of BNKT/x NiO vol.% ( i.e. x= 0.0, 1.0, 2.0 and 3.0) were sintered at 1000-1150 °C for 2 h for optimize condition. Densification, phase formation, microstructure and micro hardness of samples were characterized via Archimedes method, X-ray diffraction techniques (XRD), scanning electron microscope (SEM) and Vickers micro hardness tester. The X-ray diffraction analysis of the ceramics suggests that all samples exhibited a perovskite structure. Densification of samples tended to increase with increasing amount of NiO content with minimun at 1.0 vol.% NiO additive. The NiO additive influenced densification as well as the mechanical properties of the samples. The results of this research suggest that NiO nanoparticles have influence on physical and mechanical properties of BNKT ceramics.
Phase Transition and Electrical Properties of Ba0.8Sr0.2TiO3: Comparison of Different Preparation Techniques
Authors: Kytae Thanawat , Sutjarittangtham Krit , Thurakitseree Theerapol , Leenakul Wilaiwan
Published: June 2017

This research studied the effect of the different preparation technique on phase transition and electrical properties of Ba0.8Sr0.2TiO3. The samples compared 3 preparation technique, there are conventional mix-oxide, molten-salt and seed-induced method. The samples prepared by molten-salt calcined at 800 °C, the samples prepared by conventional mix-oxide and seed-induced method was calcined at 1200 °C for 3 h. All of samples sintered at 1400 °C for 3 h. The phase formation and morphology of samples were characterized via X-ray diffraction (XRD) and scanning electron microscopy (SEM), respectively. The dielectric properties of the samples were measurement by LCR-meter.
Enhancing Biosynthesis of Flavonol Protective Biomaterials Using FLS Transgenic Plants
Authors: Dangrit Darin , Sompornpailin Kanokporn
Published: June 2017

Flavonol synthase (FLS) gene encodes an enzyme that is involved in conversion substrates into flavonols, quercetin and kaempferol. These substances are a subgroup of flavonoids which have an important role in both plant and human health. Many environmental factors such as temperature, pH and UV-A radiation have been studied and presented relationship with flavonoid synthesis. In this experiment, the combination of visible and UV-A lights was used as factors for elevating flavonoid biosynthesis of wild type (WT) plant and two lines of FLS transgenic plant under tissue culture condition. Both transgenic lines significantly enhanced the accumulation of quercetin and kaempferol substances nearly one fold higher than WT plant did. The photosynthetic pigment levels of chlorophyll A, chlorophyll B and carotenoid in transgenic lines are in the range 45.20-46.88, 16.34-17.04 and 13.63-13.46, while those of WT plants are 35.93, 13.18 and 10.55 (µg/g FW), respectively. Therefore, FLS transgenic plants containing high flavonol content showed a better in the protection photosynthetic pigments by less reductions of chlorophyll and carotenoid pigments.
Nanoemulsion Containing SangYod Rice Bran Oil and Thanakha Extracts: In Vitro Antioxidant and Irritation Assessments
Authors: Poonsri Orrawan , Kwanhian Wiyada , Poltien Apakorn , Tangteerawatana Piyatida , Tangpong Jitbanjong
Published: June 2017

Nanoemulsions are well characterized in a promising drug delivery system with applications for drug and cosmetic. Traditionally and cosmetic industries use Rice bran oil and Hesperethusa crenulata or Thanakha bark aqueous extract in sunscreen formulations, anti ageing products and in treatments for skin diseases. The aim of this study was to produce the nanoemulsion and to evaluate their physical stability, irritation potential. In vitro study, the total phenolic contents and total antioxidant capacity of SangYod Rice bran oil (SRBO) were 1130.44 ± 53.55 mg GAE/mg and 25.94±4.69 mmol TEAC/mg and Thanakha were 3.85±0.23 mg GAE/gdw and 19.87 ± 2.59 mmol TEAC/gdw, respectively. The nanoemulsion containing SRBO and Thanakha, oil in water, was produced using low-pressure homogenizer and ultrasonicator techniques and the particle size was 167.03±1.75 nm. The stability of nanoemulsion represented no significant change on pH and particle size after day 0, 5, 11, 14 and over 12 month at temperature 4, 25 and 40 °C. Moreover, it’s also showed no irritation on HET–CAM test, a basic test for embryotoxicity, systemic toxicity and immunopathology. Conclusion, these results suggested that the nanoemulsion containing SRBO and Thanakha may serve as potential vehicles for improved transdermal delivery antioxidant compound and no irritation.
The Influence of Color Shading Net on the Growing of Lettuce
Authors: Choosakul Nithiwatthn , Pagamas Piyanath
Published: June 2017

Nowadays, shading net is widely use in Thailand, especially for vegetable production. Many colors of shading net can be found in the market. In this experiment, we set up three net houses for lettuce by using three colors of 50% transparent shading net, black, red and green. Ten of 15 days after planting (DAP) lettuces were moved to each color net house and control (direct sun). Total 40 lettuces were used for 10 days experiment. The result showed that the leave length and width of lettuce under red shading net respectively were significantly bigger than those under green shading net and control treatment without significant difference with the black shading net. The lettuce under red shading net had a highest stem diameter, fresh weight and dry weight comparing with others color shading net. The spectra of the solar radiations that transmitted through the red shading net were suitable for the photosynthesis of the lettuce leaves that could promote lettuce growth and yield.
Time Series Analysis and Statistical Process Control for Anomaly Detection: An Application to the Situation of PM 10 in Northern Thailand
Authors: Tonggumnead Unchalee , Klinjan Kittipong
Published: June 2017

The monitoring of processes is a vital mechanism for ensuring that such processes remain safe and under control. The present research aims to solve problems associated with correlated data by applying the Box-Jenkins method integrated with statistical process control (SPC) tools, namely the Shewhart chart, the moving average chart, the cumulative sum (CUSUM) chart, and the exponentially weighted moving-average (EWMA) chart. The efficiency of the four SPC tools was also compared in terms of the false alarm rate (FAR) and the missed detection rate (MDR). The findings indicated that the EWMA chart was the most effective in detecting anomaly, the Shewhart chart and the moving average chart produced high MDR, and the CUSUM chart suffered the highest FAR.
Hybrid Fuzzy Estimation of System Reliability for Multi-State System
Authors: Bamrungsetthapong Wimonmas , Pongpullponsak Adisak
Published: June 2017

This article is purpose a hybrid estimation of the fuzzy system reliability for the Non-repairable multi-state series-parallel system (NMSS). Considering the fuzzy parameter of NMSS are prior fuzzy parameters. Then the posterior fuzzy parameters of NMSS are constructed by fuzzy Bayesian point estimate of fuzzy system reliability. Moreover, an approach to construct interval estimation of the fuzzy system reliability of NMSS will be used in estimation of the prior fuzzy confidence interval and posterior fuzzy confidence interval of fuzzy system reliability. Finally, the coverage probability and the expected length that it is used to interpret the efficiency of both fuzzy confidence intervals are presented.
Image Enhancement for Characterization of MinD Protein Oscillation in Escherichia coli
Authors: Kanthang Paisan
Published: June 2017

MinD proteins play important roles during cell division process. These proteins show significant characteristics of periodic pole-to-pole propagation along the cell length. The characterizations of these protein behaviors are required to be determined accurately. Usually by using a fluorescent technique, visual motion of proteins in the cell could possibly be made and observed through a CCD. Due to the nature of low intensity of these proteins, the images obtained from the CCD camera were required to subject to noise interference and as a result digital image processing was also required. In this paper, several techniques were tried to facilitated improve the image quality. From our finding, the fluorescent technique could affect the intensity fading of the protein detected, but not to the numbers of the proteins in the cell.
Doubt Fuzzy Ideals of B-Algebras
Authors: Prabpayak Chanwit
Published: June 2017

In this paper, we introduce the notion of doubt fuzzy ideals of B-algebras and show that the arbitrary union of any doubt fuzzy ideals of a B-algebra is a doubt fuzzy ideal.
Numerical Simulation of Moisture and Temperature in Stored Grains
Authors: Khuttiyamart Nut , Yomsatieankul Warisa
Published: June 2017

This project aims to study the factors causing moisture migration and moisture loss of grain in storage grain that subsequently affect production costs by compensating lost weight due to its moisture. From reviewing a related mathematical model, it is found that physical changes of grain in silo, both the temperature and moisture, are caused by its oxidation during storage and aeration. Therefore, suitable grain storage can reduce its weight loss. To control storing process, the numerical solution of the model, a system of partial differential equations, is obtained by finite difference method. Moreover, a Java program has developed based on overall processes of the model as an information for decision making in grain production and storage.
Development of Thermal Spray Map for Liquid Feeding Thermal Spray System
Authors: Sanpo Noppakun , Tharajak Jirasak
Published: June 2017

This research work exhibits a procedure to classify and reorder thermal spray data point so that relationships and correlations between competing processes and materials can be identified. The broad range data mining of published experimental work was performed to create thermal spray map (TS map). A single TS map displayed the correlation between standoff distance (SOD) and feeding particle size is mainly focused. The discussion and evaluation of TS map was taken place. These data mining could be useful to use and/or adapt as reference points for the thermal spray experiment set up in the future.
Exploring the Relationship between Brand Green Image, Environmental Performance and Consumer Green Consciousness and Purchase Intention of Fashion Products
Authors: Kan Chi Wai , Chow Cheby Yuen Ting , Thangtham Usa , Yabdee Sudakan , Yulek Arparpun , Mongkholrattanasit Rattanaphol
Published: June 2017

Products features have a significant effect on consumers’ buying intention as it identifies which of the consumers’ needs be fulfilled. In addition, emotional brand benefit is one of the important factors to switch consumers from actual consumption to eco-friendly purchasing. In this study, we explored the relationship between brand green image, environmental performance and consumer green consciousness and purchase intention by survey with target group age ranged 18-28. The survey results indicated that there is a direct relationship between brand green image environmental performance and consumer green consciousness and purchase intention of fashion products.