Biotechnology Commons^™

Basic Issues And Recent Development In Science And Technology Policy In Thailand, Yuthavong Yongyuth

ASEAN Journal on Science and Technology for Development

Basic Issues and Recent Development in Science and Technology Policy in Thailand

The Degree Of Christallinity Of Uv Irradiated Polypropylene, Subowo Wiwik S, Liang Oei Bang

ASEAN Journal on Science and Technology for Development

The Degree of Christallinity of UV Irradiated Polypropylene

Chemotherapeutic Of Niclofolan In The Treatment, Fernandes Jr, T.J

ASEAN Journal on Science and Technology for Development

Chemotherapeutic of Niclofolan in the Treatment

A Preliminary Investigation Of The Alkaloid Of Phoebe Lanceolata, Arbain Dayar, Sargent Melvyn V.

ASEAN Journal on Science and Technology for Development

A Preliminary Investigation of The Alkaloid of Phoebe Lanceolata

Investigation On The Behavior Of Rigid Polyvinylchloride Pipes Subjected To Uniaxial Compression Loads, Alhamati Abdullah Ali Nasser, Ghazali Abdul Halim, Norzaie Jamalodin

ASEAN Journal on Science and Technology for Development

The objective of this research was to investigate the capability of rigid Polyvinylchloride (PVC-U) pipes to sustain axial loads. The behavior of PVC-U pipes specimens subjected to short-term uniaxial compression loads were experimentally investigated. Results of the load-displacement tests on pipes of different wall thickness, diameter, and specimen heights were recorded. The experimental test results show that the PVC-U pipes are capable of supporting loads greater than the required design load (3.4 kN). Increasing the pipe specimen height decreases the pipe strength for supporting the axial loads. Euler buckling was observed in the pipe specimens with small diameter and long …

Role Of Sawdust In The Removal Of Iron From Aqueous Solution, Senin H.B., Subhi O., Rosliza R., Kancono N., Azhar M.S., Hasiah S., Nik W.B. Wan

ASEAN Journal on Science and Technology for Development

Sawdust, inexpensive material has been utilized as an absorbent for the removal of iron from aqueous solution for their safe disposal. The adsorption experiments of untreated sawdust (SD) and treated sawdust (SDC) have been carried out at room temperature using the batch test. The Langmuir and Freundlich isotherms were used to observe sorption phenomena of sawdust in the removal of iron. The results indicate that the sawdust was capable in removing iron in aqueous solution. The results have shown that the Langmuir isotherm was found well fitted into the experimental data as compared to the Freundlich isotherm. It was found …

Modification Os Rbf Network Architecture, Mashor Mohd Yusoff

ASEAN Journal on Science and Technology for Development

Modification os RBF Network Architecture

Improving The Baculovirus Expression Vector System With Vankyrin-Enhanced Technology, Kendra H. Steele, Barbara J. Stone, Kathleen M. Franklin, Angelika Fath-Goodin, Xiufeng Zhang, Haobo Jiang, Bruce A. Webb, Christoph Geisler

Entomology Faculty Publications

The baculovirus expression vector system (BEVS) is a widely used platform for the production of recombinant eukaryotic proteins. However, the BEVS has limitations in comparison to other higher eukaryotic expression systems. First, the insect cell lines used in the BEVS cannot produce glycoproteins with complex‐type N‐glycosylation patterns. Second, protein production is limited as cells die and lyse in response to baculovirus infection. To delay cell death and lysis, we transformed several insect cell lines with an expression plasmid harboring a vankyrin gene (P‐vank‐1), which encodes an anti‐apoptotic protein. Specifically, we transformed Sf9 cells, Trichoplusia ni High Five …

Mitochondrial Reactive Oxygen Species In Lipotoxic Hearts Induces Post-Translational Modifications Of Akap121, Drp1 And Opa1 That Promote Mitochondrial Fission, Kensuke Tsushima, Heiko Bugger, Adam R. Wende, Jamie Soto, Gregory A. Jenson, Austin R. Tor, Rose Mcglauflin, Helena C. Kenny, Yuan Zhang, Rhonda Souvenir, Xiao X. Hu, Crystal L. Sloan, Renata O. Pereira, Vitor A. Lira, Kenneth W. Spitzer, Terry L. Sharp, Kooresh I. Shoghi, Genevieve C. Sparagna, Eva A. Rog-Zielinska, Peter Kohl, Oleh Khalimonchuk, Jean E. Schaffer, E. Dale Abel

Department of Biochemistry: Faculty Publications

Rationale: Cardiac lipotoxicity, characterized by increased uptake, oxidation and accumulation of lipid intermediates, contributes to cardiac dysfunction in obesity and diabetes. However, mechanisms linking lipid overload and mitochondrial dysfunction are incompletely understood.

Objective: To elucidate the mechanisms for mitochondrial adaptations to lipid overload in postnatal hearts in vivo.

Methods and Results: Using a transgenic mouse model of cardiac lipotoxicity overexpressing long-chain acyl-CoA synthetase 1 in cardiomyocytes, we show that modestly increased myocardial fatty acid uptake leads to mitochondrial structural remodeling with significant reduction in minimum diameter. This is associated with increased palmitoyl-carnitine oxidation and increased reactive oxygen species (ROS) generation …

Pre-Determination Of Manufacturing Costs Of Injection Moulded Part Design, Shing Ong Nan

ASEAN Journal on Science and Technology for Development

Pre-Determination of Manufacturing Costs of Injection Moulded Part Design

Data Mining: Concept, Aplications And Techniques, Guohua Wang, Francis E. H

ASEAN Journal on Science and Technology for Development

Data Mining: Concept, Aplications and Techniques

Metal Composites Behaviour Under Biaxial Stresses, Jai J., Berhan M.N.

ASEAN Journal on Science and Technology for Development

For this study, different volume fraction (vol.%) of particulate alumina (Al2O3)reinforced aluminium alloy (Al 6061) with 5 vol.%, 15 vol.% and 25 vol.% are produced by powder metallurgy method. These samples were subjected to biaxial stresses in order to investigate the behaviour of the metal matrix composites (MMCs). Microstructure analysis on the individual sample before and after loading was performed under scanning electron microscopy. The small particles of 2 µm in size have exhibited strong interfacial bonding with the matrix. The particles of 5 µm in size have shown fractures and debonding interface. Large particles of above 20 µm in …

Synthesis And Characterization Of Pure-Silica- Zeolite-Beta Membrane, Fong Yeong Yin, Bhatia Subhash

ASEAN Journal on Science and Technology for Development

The semiconductor industry needs low dielectric constant (low k-value) materials to more advance microprocessor and chips by reducing the size of the device features. In fabricate this context, a new material with lower k value than conventional silica ( k = 3.9 - 4.2 ) is needed in order to improve the circuit performance. As per the recent International Semiconductor Technology plan, a low-k material with a k = 1.6 will be needed by 2010. The choice of the inorganic zeolite membrane is an attractive option for low k material and suitable for microprocess application. In the present study, a …

The Safety Of Building Structures Subject To Unusual Natural And Man-Made Disasters, Pho Nguyen Van

ASEAN Journal on Science and Technology for Development

Previously, we often use the statistical data on natural disasters and mathematical tools such as probabilistic theory, mathematical statistics and random processes to express and analyze natural disasters' phenomena when dealing with the safety problem of building structures subject to natural disasters. However, due to unusual change of the global climate, natural disasters have changed essentially the intensity, frequency and the appearing time so we cannot rely on the statistical data on natural disasters in the past to do that. Therefore, renovation of the thought on selection of plans, calculation, design, and evaluation of safety of building structures to accommodate …

High-Throughput Single-Molecule Telomere Characterization, Jennifer Mccaffrey, Eleanor Young, Katy Lassahn, Justin Sibert, Steven Pastor, Harold Riethman, Ming Xiao

School of Medical Diagnostics & Translational Sciences Publications

We have developed a novel method that enables global subtelomere and haplotype-resolved analysis of telomere lengths at the single-molecule level. An in vitro CRISPR/Cas9 RNA-directed nickase system directs the specific labeling of human (TTAGGG) n DNA tracts in genomes that have also been barcoded using a separate nickase enzyme that recognizes a 7bp motif genome-wide. High-throughput imaging and analysis of large DNA single molecules from genomes labeled in this fashion using a nanochannel array system permits mapping through subtelomere repeat element (SRE) regions to unique chromosomal DNA while simultaneously measuring the (TTAGGG) n tract length at the end of each …

Effect Of Engine Speed On Performance Adn Emissions Of A Dual Chamber Spark Ignition Engine, Rangkuti Chailulillah

ASEAN Journal on Science and Technology for Development

Effect of Engine Speed on Performance adn Emissions of a Dual Chamber Spark Ignition Engine

Adaptive Finite Element Technique For Viscous Flow Analysis, Dechaumphai Pramote, Sikkhabandit Supatpong

ASEAN Journal on Science and Technology for Development

Adaptive Finite Element Technique For Viscous Flow Analysis

Application Of A Line Source Air Quality Model To The Study Of Traffic Carbon Monoxide In Brunei Darussalam, Hassan Hasnah, Singh M. P, Gribben R. J, Srivastava L. M, Radojevic M, Latief Azhar

ASEAN Journal on Science and Technology for Development

Application of a Line Source Air Quality Model to The Study of Traffic Carbon Monoxide in Brunei Darussalam

Molecular Polarisabilities And Orientational Order Parameters Od Binary Mesophase Mixtures Of Nematic Compounds, Murthy Y. Narashima, Murthy V. R

ASEAN Journal on Science and Technology for Development

Molecular Polarisabilities and Orientational Order Parameters od Binary Mesophase Mixtures of Nematic Compounds

The Influence Of Culturae On Innovarive Behaviour And Management In Singapore, Yap C.M, Buisson D.H, Garrett T.C

ASEAN Journal on Science and Technology for Development

The Influence of Culturae on Innovarive Behaviour and Management in Singapore

A New Triterpene Glycoside From The Sea Cucumber Holothuria Scabra Collected In Vietnam, Thanh Nguyen Van, Dang Nguyen Hai, Kiem Phan Van, Cuong Nguyen Xuan, Huong Hoang Thanh, Minh Chau Van

ASEAN Journal on Science and Technology for Development

Bioassay guided fractionation led to the isolation of a new triterpene glycoside, holothurinogenin B (1) along with three known compounds, holothurin B (2), holothurin A (3), and holothurin A2 (4), from the methanol extract of the Vietnamese sea cucumber Holothuria scabra. Their structures were deduced from the spectral analysis (1D-NMR, 2D-NMR, MS) and chemical evidences.

Characteristics Of Solid-State Calcium Ion Sensors Based On Photocurable And Selfplasticising Polyacrylate Matrices, Heng Lee Yook, Hall Elizabeth A.H.

ASEAN Journal on Science and Technology for Development

New membrane materials based on cross-linked poly(n-butyl acrylate) (nBA), have been used successfully as calcium ion-selective membranes. These membrane materials possess selfplasticising property and hence do not require plasticisers. The photocurability and good adhesion characteristics of these polymer matrices enable workable solid-state calcium ion sensors to be fabricated by simple photocure procedures employing the calcium ionophore ETH5234 and a lipophilic additive as ion sensing components. The calcium ion-selectivity of the sensors can be controlled by varying the chemical composition of the photocured membrane. An optimum amount of the cross-linker 2,2-hexanedioldiacrylate (HDDA) and the incorporation of n-heptyl acrylate (nHA) led to …

Source For Gloxinia (Sinningia Spp.) And Potato (Solanum Tuberosum) Micropropagation, Tan Nhut Duong, Ngoc Huong Mai Thi

ASEAN Journal on Science and Technology for Development

An efficient lighting system (Compact 3U) was successfully applied to the micropropagation of gloxinia and potato plants. To compare the in vitro growth of plantlets under Neon and Compact 3U lighting systems, gloxinia and potato shoots were cultured on suitable media at different light intensities: (1) 45 µmol m-2s-1 (under Neon lighting system as a control); (2) 45 µmol m-2s-1, (3) 60µmol m-2s-1, and (4) 75 µmol m-2s-1 (under Compact 3U lighting systems). The results obtained after 3 weeks of in vitro culture and 6 weeks of acclimatization in a greenhouse showed that the growth of plantlets cultured under the …

Influence Of Nitrogen Gas Flow Rate On The Microstructural And Mechanical Properties Of Tin Deposited Carbon Steel Synthesized By Cae, Mubarak A., Hamzah E.

ASEAN Journal on Science and Technology for Development

This paper reports on the preparation of titanium nitride (TiN) thin films on carbon steel plates, using cathodic arc evaporation CAE PVD technique. We studied and discussed the effect of various nitrogen gas flow rates on microstructural and mechanical properties of TiN-coated carbon steel plates. The coating properties investigated in this work included the surface morphology, thickness of deposited coating, adhesion between the coating and substrate, coating composition, coating crystallography, hardness and surface characterization using a field emission scanning electron microscope (FE-SEM) with energy dispersive X-ray (EDX), Xray diffraction (XRD) with glazing incidence angle (GIA) technique, scratch tester, hardness testing …

Creep Analysis Of Bimaterial Microcantilever Beam For Sensing Device Using Artificial Neural Network (Ann), Wong Waichi, Lee Hingwah, Azid Ishak A., Seetharamu K.N.

ASEAN Journal on Science and Technology for Development

In this study, a feed-forward back-propagation Artificial Neural Network (ANN) is used to predict the stress relaxation and behavior of creep for bimaterial microcantilever beam for sensing device. Results obtained from ANSYS® 8.1 finite element (FE) simulations, which show good agreement with experimental work [1], is used to train the neural network. Parametric studies are carried out to analyze the effects of creep on the microcantilever beam in term of curvature and stress deve loped with time. It is shown that ANN accurately predicts the stress level for the microcantilever beam using the trained ANSYS® simulation results due to the …

Characterisation Of Multicrystalline Solar Cells, Malik A.Q., Hah Chong Chew, Khwang Chan Siang, Ming Lim Chee, Sheng Tan Kha

ASEAN Journal on Science and Technology for Development

The evaluation and assessment of the performance of photovoltaic (PV) cells in terms of measurable parameters requires the measurement of the current as a function of voltage, temperature, intensity, wind speed and spectrum. Mo st noticeable of all these parameters is the PV conversion efficiency η, defined as the maximum electrical power Pmax produced by the PV cell divided by the incident photon power P in which is measured with respect to standard test conditions (STC). These conditions refer to the spectrum (AM 1.5), solar radiation intensity (1000 Wm-2), cell temperature (25 ±2oC) and wind speed (2 mph). Tests under …

Effect Of The Reciprocating Mass Of Slider-Crank Mechanism On Torsional Vibrations Of Diesel Engine Systems, Pasricha M.S. Pasricha, Hashim F.M.

ASEAN Journal on Science and Technology for Development

The torsional vibration phenomenon in the running gear of reciprocating engine systems isusually dealt with by considering a series of constant inertias connected by sections of massless shafting. However in reality, a slider crank mechanism is a vibrating system with varying inertia because the effective inertia of the total oscillating mass of each crank assembly varies twice per revolution of the crankshaft. Large variations in inertia torques can give rise to the phenomenonof secondary resonance in torsional vibration of modern marine diesel engines which can not be explained by conventional theory incorporating only the mean values of the varying inertias. …

On A Solution To Improve The Object Detection Ability Of Radars By Dynamic Polarization Method, An Nguyen Quoc

ASEAN Journal on Science and Technology for Development

One of the most importan problems of modern radar is increasing object detection, object distinction ability. In the last years, the used traditional radar signal processing methods are seem to use up. For solving this question, specialists are interested in analyzing the fine structure of radar signal, and the first is po larization structure. The use of polarization information allows to raise the information ability of radar systems and provides high probability of radar objects detection, high contrast of small-scale man-made objects on the radar map and radar objects classification.The article deals with the detection of radar objects by exploiting …

Hedge Algebras: An Algebraic Approach To Domains Of Linguistic Variables And Their Applicability, N.C. Ho N.C.

ASEAN Journal on Science and Technology for Development

The paper is an overview on an algebraic approach to domains of linguistic variables and somefirst applications to show the applicability of this new approach. In this approach, each linguistic domain can be considered as a hedge algebra (HA for short) and based on the structure of HAs,a notion of fuzziness measure of linguistic hedges and terms can be defined. In order to apply hedge algebras to those problems, the results of which are needed, a notion of semantically quantifying mappings (SQMs) will be introduced. It shown that there is a closed connection between SQMs and fuzziness measure of hedge …

Effect Of Fly Ash Particle Reinfo Rcement On Microstructure, Porosity And Hardness In Al-(Si-Mg) Cast Composites, Harun M.B., Shamsudin S.R., Yazid H., Selamat Z., Sattar M.S., Jalil M.

ASEAN Journal on Science and Technology for Development

The microstructure of cast Al-4Si-Mg reinforcedwith fly ash particles at various particlecontents has been studied. The composites were fabricated by stir casting process andcharacterized by optical microscopy, image analyzer, scanning electron microscopy and hardness measurements. The results showed that particle contents affected to the presence oforosities and hardness of the composites. It was observed that increasing the fly ash contentincrease the porosity in the composites, with the matrix alloy reinforced with 15 wt.% of fly ash particles having the highest porosity and lowest hardness.