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Articles 391 - 420 of 590
Full-Text Articles in Biotechnology
Electrochemical Model Of Euglena Sanguinea Ehrenberg Stimulated With Multi-Level Electromagnetic Fields, Packamwongsang K., Noppanakeepong S., Naranong N., Phaewbang P., Pleuksananon P., Packamwongsang W.
Electrochemical Model Of Euglena Sanguinea Ehrenberg Stimulated With Multi-Level Electromagnetic Fields, Packamwongsang K., Noppanakeepong S., Naranong N., Phaewbang P., Pleuksananon P., Packamwongsang W.
ASEAN Journal on Science and Technology for Development
This research aimed at studying the property of Euglena Sanguinea Ehrenberg (E. sanguinea) before and after being stimulated by multi-level electromagnetic fields (MLEM). After the stimulation, it was found that physical properties were changed, i.e., cell membrane and components deformed. Main biochemical compositions were changed in accordance with new electrochemical equation which was estimated from FTIR bands. Moreover, the estimated electrical results before and after being stimulated, i.e., impedance and complex relative permittivity of main biochemical compositions from extraction, were then measured, simulated, and compared by means of Cole-Cole plot technique which yielded the statistic correlation 0.89 at 95% confidence …
Measurment Of Bending Properties Of Rhizophora Tropical Wood, Hamdan Sinin, Hasan Mahbub, Nohe Yoann
Measurment Of Bending Properties Of Rhizophora Tropical Wood, Hamdan Sinin, Hasan Mahbub, Nohe Yoann
ASEAN Journal on Science and Technology for Development
The Young’s modulus, load at the yield point and proportional limit stress from the compression bending (cb) test were compared with the four point bending tests (4pb). The theoretical Young’s modulus are larger than the real reading for 5mm and 10mm thick specimens, except for 200mm long specimens due to specimen nonlinearity. The experimental results for the short specimens are slightly high compared to the theory due to uniaxial compression in both tensile and compressive planes. Since the additional deflection produced by the shearing force and the stress concentration at the loading point was smaller with the compression bending test …
Studies On Chitosan - Benzaldehyde Interaction In A Homogeneous System And Its Adsorption Behavior Of Metal Ions In Aqueous Solution, Thien Do Truong, Tuyen Nguyen Van, Nhi Tran Thi Y
Studies On Chitosan - Benzaldehyde Interaction In A Homogeneous System And Its Adsorption Behavior Of Metal Ions In Aqueous Solution, Thien Do Truong, Tuyen Nguyen Van, Nhi Tran Thi Y
ASEAN Journal on Science and Technology for Development
In this work, N-benzylidene chitosan was synthesized by chitosan –benzaldehyde interaction in a homogeneous system. The modified polymers were characterized by means of infrared (IR) spectra, X-Ray diffraction and thermal analysis. Their adsorption behavior was investigated by atomic absorption spectrophotometry. The experimental results showed that N-benzylidene chitosan had better adsorption properties and higher chemical resistance than that of chitosan.
Aromatic Plants From Vietnam, Sources Of Phenylpropanoid Products For Industry, Hoi Tran Minh
Aromatic Plants From Vietnam, Sources Of Phenylpropanoid Products For Industry, Hoi Tran Minh
ASEAN Journal on Science and Technology for Development
Aromatic plants produce by vapour distillation or other processes essential oils which are products with high commercial value used in the natural product industries such flavour and fragrance, perfumes and cosmetics industries as well as pharmaceutical industry. The aim of this study was to characterise some aromatic plants from Vietnam through the chemical composition of their essential oils. We got interested in essential oils which contained a main component with high to ultra high content, susceptible to find an industrial use. For this study, a dozen of plants have been selected. The composition of their essential oils will be compared …
Artificial Intelligent System For Measurement Of Harmonic Powers, Jerome Jovitha, Vinoth P.
Artificial Intelligent System For Measurement Of Harmonic Powers, Jerome Jovitha, Vinoth P.
ASEAN Journal on Science and Technology for Development
The importance of the electric power quality (PQ) demands new methodologies and measurement tools in the power industry for the analysis and measurement of the basic electric magnitudes necessary. This paper presents a new measurement procedure based on neural networks for the estimation of harmonic amplitudes of current/voltage and respective harmonic powers. The measurement scheme is built with two neural network modules. The first module is an adaptive linear neuron (ADALINE) that is the kernel part of estimation of complex harmonic coefficients of the current/voltage. The second module is feedforward neural network that obtains the harmonic active/reactive powers. In order …
A New Investigation Of Vietnam’S Beryl, Binh Nguyen Van, Hong Nguyen Thi
A New Investigation Of Vietnam’S Beryl, Binh Nguyen Van, Hong Nguyen Thi
ASEAN Journal on Science and Technology for Development
The paper presents briefly new investigation of Vietnam beryl group, especially some characteristics of regional geology of Song Chay granite massif and new find of big crystals of beryl in them. The green beryl is found in quartz - mica - tourmaline, mica - feldspar – quartz pegmatite bodies in the south part of Song Chay granite - gneiss massif near Na Chi and Tan Nam villages, Quang Binh district, Ha Giang province.
Studies Of Monomer Impregnation And Polymerized “In-Situ” In Wood Using Dynamic Mechanical Thermal Analyzer (Dmta), Hamdan S., Liew Y.L., Talib Z.A.
Studies Of Monomer Impregnation And Polymerized “In-Situ” In Wood Using Dynamic Mechanical Thermal Analyzer (Dmta), Hamdan S., Liew Y.L., Talib Z.A.
ASEAN Journal on Science and Technology for Development
Some tropical hardwoods (acacia mangium, madhuca utilis, dacrydium spp., dipterocarpus spp.,dyera costulata, shorea spp., shorea gibbosa, shorea macrophylla, endospermum diadenum, cratoxylum arborescens) are selected and impregnated with methyl methacrylate (MMA) and polymerized “in-situ” by using catalyst-heat technique. Treatability of the wood as determinedfrom the fractional volumetric retentions of monomer i.e. fraction of voids filled by the impregnant showed that the mean retention range from 15.03% (acacia mangium) to 56.59% (cratoxylum arborescens). The penetration of monomer evaluated using ultrasonic wave showed that the treated wood had higher velocities which indicate significant increase in density. This paper deals with the viscoelastic relaxation …
Influence Of Silica Colloid On Rheology Of Cement Paste With Superplasticizer, Chuong T.H., Nga P.V.
Influence Of Silica Colloid On Rheology Of Cement Paste With Superplasticizer, Chuong T.H., Nga P.V.
ASEAN Journal on Science and Technology for Development
Information of rheological behavior of binder paste is important for proportioning high slump concrete mixture at low water to cement ratios. This paper presents experimental data on the rheological property of silica colloid incorporated binder paste using naphthalene based and polycarboxylate based superplasticizer, compared to that of silica fume incorporated binder paste. Experimental data showed that silica colloid incorporated binder is compatible to tested superplasticizers in the all investigated range of silica colloid content, whereas the pastes incorporated with high silica fume content (over 10%) indicated incompatibility, especially to naphthalene based superplasticizer. There was also found out saturated content of …
Preservation Of Milks With Addition Of Antibacterial And Aromatic Supplements Produced In Japan, Khusniati Tatik
Preservation Of Milks With Addition Of Antibacterial And Aromatic Supplements Produced In Japan, Khusniati Tatik
ASEAN Journal on Science and Technology for Development
The good antibacterial and aromatic supplements produced in Japan for preservation of milks at storage was investigated. Nineteen sweet and herb materials were made juices as supplements to preserve the milks. Bacterial counts, pH, protease activities and lipase activities of supplemented milks, and antibacterial activities of supplements were detected by total plate counts, glass electrode pH meter, azocasein, modified Dole extraction and turbidity methods. Eleven of nineteen milks added 10% of honey, garlic, ginger, horseradish, “sansho”, “yuzu”, green perilla, “nira”, green tea, bamboo leaf and “yomogi” were selected as good supplemented milks based on pH of these milks closed to …
Synthesis Of Ferrite Nanoparticles With Protein Molecules Immobillized On Their Surfaces, Hai Tran Hoang, Phuc Le Hong, Dung Doan Thi Kim, Huyen Nguyen Thi Le, Long Bui Duc, Thang Nguyen Tien, Do Vu Van, Quynh Nguyen Nguyen, Abe Masanori
Synthesis Of Ferrite Nanoparticles With Protein Molecules Immobillized On Their Surfaces, Hai Tran Hoang, Phuc Le Hong, Dung Doan Thi Kim, Huyen Nguyen Thi Le, Long Bui Duc, Thang Nguyen Tien, Do Vu Van, Quynh Nguyen Nguyen, Abe Masanori
ASEAN Journal on Science and Technology for Development
The ferrite (a Fe3O4 – gFe2O3 mixed solution) fine particles, ~8 nm in size were synthesized from an aqueous solution. Trypsin, a proteolytic enzyme or a protein, was immobilized onto the surfaces of those particles during the synthesis process. The process was performed in the open air at a temperature as low as 4°C and on near-neutral condition of pH = 9, which is compatible with most of the bioactive molecules as well as trypsin. Therefore this technique is advantageous for preparing magnetite particles having biomolecules immobilized on their surfaces, which will be used for biomedical applications utilizing magnetic separation …
Causes Of Tractor Breakdowns And Requisite Solutions A Case Study Of Small Tractor Use In Riau Province, Indonesia, Paman Ujang, Uchida S., Inaba S., Kojima T.
Causes Of Tractor Breakdowns And Requisite Solutions A Case Study Of Small Tractor Use In Riau Province, Indonesia, Paman Ujang, Uchida S., Inaba S., Kojima T.
ASEAN Journal on Science and Technology for Development
A survey has been undertaken to look into the causes of tractor breakdowns on field operations and the main constraints associated with repair and maintenance, and to recommend a solution to the problems in Riau Province. The owners of sixty-two small tractors were interviewed, from three regencies chosen of the Province in 2003. As a result, the working capacity of the tractors was relatively high and the average annual use was relatively low compared to the national average. Most tractor operators did not have sufficient skill to operate tractors. The tractor breakdowns resulted from operators’ mistakes, fuel and oil defilement, …
A New Qos Guarantee Sla Based-Scheme For Handoff Calls In Wireless Networks, Phuong Nguyen Cao, Quan Tran Hong, Lee Sang-Ho, Moon Jung-Mo
A New Qos Guarantee Sla Based-Scheme For Handoff Calls In Wireless Networks, Phuong Nguyen Cao, Quan Tran Hong, Lee Sang-Ho, Moon Jung-Mo
ASEAN Journal on Science and Technology for Development
The most important thing is guarantee QoS over wireless infrastructures. The efficient of service level agreement (SLA) is becoming increasingly important to both service providers and customers. This paper presents some traffic control schemes for improving QoS, trafficmodel and performance evaluation are described. We are defining a new scheme for improving handoff call performances in wireless networks, a finite queuing scheme for the handoff calls. SLA measurement calculates the packet delay parameter (PD) of handoff calls. The handoff calls will be accepted into queue if their PD will be smaller than the average waiting time of the queue. Important performance …
Gasification Study Of Sarawak Coals, Othman Nor Fadzilah, Bosrooh Mohd Hariffin
Gasification Study Of Sarawak Coals, Othman Nor Fadzilah, Bosrooh Mohd Hariffin
ASEAN Journal on Science and Technology for Development
Thermogravimetry (TG) has been applied in a preliminary investigation, to the gasification of two low rank Sarawak coals. The coal samples, about 10 mg were investigated within the temperature range 30–900°C at different heating rate of 10, 20 and 30°C min-1, under a synthetic air atmosphere for the gasification study. The kinetic parameters were determined using Arrhenius type reaction model assuming a first-order reaction. The reactivity, RT values are fitted with Arrhenius equation at r2 = 0.83 - 0.98 for MP coal, while the RT values for MB coal are fitted with the Arrhenius equation at r2 = 0.99. The …
Ant Intelligence Routing, Gan Chye Ong, Wong K. Daniel, Woon Wei-Le
Ant Intelligence Routing, Gan Chye Ong, Wong K. Daniel, Woon Wei-Le
ASEAN Journal on Science and Technology for Development
We introduce AIR, a new ant-based routing protocol for ad hoc wireless networks. AIR incorporates recent technology advances in ad hoc routing protocols, such as ring-based searching and third-party reply, while retaining the characteristics and benefits of ant-based routing protocols, including probabilistic routing tables and pheromone evaporation. In addition, we combine the best features of previous ant-based routing protocols with new features like update ants and two-way route establishment, to further improve performance. We compare the performance of AIR against AODV and DSR using appropriately chosen simulations, the results of which are presented and discussed. We find that AIR is …
The Effect Of Inner Diaphragms And Non-Continuous Sill Section On The Stiffness Of Automotive B-Pillar, Tan C.F., Shamsuddin S.A., Shafie M.H.
The Effect Of Inner Diaphragms And Non-Continuous Sill Section On The Stiffness Of Automotive B-Pillar, Tan C.F., Shamsuddin S.A., Shafie M.H.
ASEAN Journal on Science and Technology for Development
The paper discusses the knowledge on the behaviour of T-frame under specific loading will be obtained by experimental methods in order to investigate the deflection of the vehicle B-pillar or T-frame. In addition, a series of T-frame were designed with inner diaphragm at various location in the sill member in order to investigate the effect of inner diaphragm and noncontinuous closed hat section in the sill member. Lastly, the results from the experimental tests were compared with the finite element analysis results to demonstrate the effectiveness of the inner diaphragm in the automotive B-pillar.
Study On Structure And Crystallization Of Polypropylene Grafted Maleic Anhydride/Nanoclay Composite, Chuong Bui, Hung Dang Viet
Study On Structure And Crystallization Of Polypropylene Grafted Maleic Anhydride/Nanoclay Composite, Chuong Bui, Hung Dang Viet
ASEAN Journal on Science and Technology for Development
Nanocomposite from polypropylene grafted maleic anhydride (PP-g-MA) and nanoclay were prepared by melt proccessing in Brabender extruder. XRD analysis shows the formation of nanostructure (intercalated and exfoliated) of nanocomposite with interlayer space (d-space) increasing from 26.3Å to 30.9Å. These structures, however, do not affect the microcrystalline structure of polymer part of nanocomposite in whole. The study on nonisothermal crystallization shows the development in 3-dimentional direction of crystallites, that means spherulite form of crystalline structure.
Arsenic And Copper Uptake By Cabbages Grown On Polluted Soils, Phuong Nguyen Thi Kim, Dung Nguyen Thi
Arsenic And Copper Uptake By Cabbages Grown On Polluted Soils, Phuong Nguyen Thi Kim, Dung Nguyen Thi
ASEAN Journal on Science and Technology for Development
Cabbages (Brassica Juncea (L.) Czern) were grown in pot experiments on typical unpolluted and polluted soils with concentration changing from 20.50 - 50.00 mg As/kg and 156.00 - 413.00 mg Cu/kg dry soil. The results demonstrate the elevation of As and Cu in soil may lead to increased uptake by these cabbages subsequent entry into human food chain. It was found 11.84- 32.12 mg As/kg and 46.86 - 94.47 mg Cu/kg dry leaves. It has tendency increase uptake and accumulation of Cu in cabbage tissue with increasing cultivated time, whereas, it was found accumulation of As in cabbages tissue decreased …
An Overview Of Thermal Analysis Of Polymers, Chan Sze On Dr Hardy
An Overview Of Thermal Analysis Of Polymers, Chan Sze On Dr Hardy
ASEAN Journal on Science and Technology for Development
This article presents an up-to-date overview of the application of thermoanalytical methods in the study of polymers with special focus on thermogravimetry, differential thermal analysis, diferential scening calorimetry and thermomechanical analysis. The working principles behind the variouse thermoanalytical methods together with modes of operation are described. Their usefulness in the characterisation of polymers is cowered comprehensively with examples cited in the litearture. The question of validity of data obtained from thermokinetic studies of polymers is examined and it is felt that the kinetic parameters generated carry little physical meaning about the kinetic of the polymer reaction.
The Mobilization And Utilization Of Scientific And Technological Human Resources In Developing Countries, Moravscik Michel J
The Mobilization And Utilization Of Scientific And Technological Human Resources In Developing Countries, Moravscik Michel J
ASEAN Journal on Science and Technology for Development
Human resources (henceforth abbreviated as "manpower") in the development and the functioning of science and technology in developing countries is the most crucial ingredient, and forms, most often, the bottleneck in evolution. This is so because it takes an extended period of time (decades) to establish an indigenous scientific and technological manpower of sufficient quality and quantity, and because it is a much more difficult and uncertain undertaking to do so than to asquire sufficient financial resources. For this reason problems related to the generation and utilization of scientific and technological manpower are at the very centre of attantion when …
Prothrombin-Sepharose-Purified Factor V And Its Role In Prothrombin Conversion, Ong T.C
Prothrombin-Sepharose-Purified Factor V And Its Role In Prothrombin Conversion, Ong T.C
ASEAN Journal on Science and Technology for Development
Bovine Factor V isolated by the method of Esnouf and Jobin (1967) has been further purified by affiniy chromotgraphy through prothrombin-sepharose. Factor V bound quantitative to the prothrombin-sepharose column. There was a 2-fold increase in the average specific activity (260.000 units/mg protein) of the Factor V recovered. Recovery of total Factor V activity and total protein was about 95% and 90% respectively.
Development In The Analytical Gas Chromatography Of Metal Dialkydithiophospate Complexes, Marriot Dr Philip J
Development In The Analytical Gas Chromatography Of Metal Dialkydithiophospate Complexes, Marriot Dr Philip J
ASEAN Journal on Science and Technology for Development
The gas chromotographic analysis of metal-containing compounds has been a small but reasonably active field for about 25 yeras. Analyses cover such as organometalics, metal complexes, and compounds such as hydrides and halides. Reviews of the fiels may be seen in the books by Moshier and Sievers (1), Guichon and Pommier (2) and Crompton (3), as well as the papers by Uden and Henderson (4) abd Rodrigues-Vasquez (5).
Fungsi Associated With Ipil-Ipil (Leucaena Leucocephala) (Lam) De With Seeds And Their Control, Quiniones Sebastian S
Fungsi Associated With Ipil-Ipil (Leucaena Leucocephala) (Lam) De With Seeds And Their Control, Quiniones Sebastian S
ASEAN Journal on Science and Technology for Development
Thirteen fungi were isolated from Leucaena seeds from different places in the philipines. These were; Fusarium moniliforme, F. solani, F. semitecctum, Botryodiplodia theobromae, Cephalosporium sp., Phoma sp., Phoma sp., Cladosporiumsp., Chaetomium sp., Chaetomiun sp., Penicilium sp. and Aspergilus flavus. C. graminiculo completely inhibits the germination of seeds once it has colonized the seeds.
Nonlinear Finite Element Analysis Of Nonseismically Detailed Interior Rc Beam-Column Connection Under Reversed Cyclic Load, Supaviriyakit Teeraphot, Pimanmas Amorn, Warnitchai Pennung
Nonlinear Finite Element Analysis Of Nonseismically Detailed Interior Rc Beam-Column Connection Under Reversed Cyclic Load, Supaviriyakit Teeraphot, Pimanmas Amorn, Warnitchai Pennung
ASEAN Journal on Science and Technology for Development
This paper presents a nonlinear finite element analysis of non-seismically detailed RC beam column connections under reversed cyclic load. The test of half-scale nonductile reinforced concrete beam-column joints was conducted. The tested specimens represented those of the actual mid-rise reinforced concrete frame buildings designed according to the non-seismic provisions of the ACI building code. The test results show that specimens representing small and medium column tributary area failed in brittle joint shear while specimen representing large column tributary area failed by ductile flexure though no ductile reinforcement details were provided. The nonlinear finite element analysis was applied to simulate the …
An Approach Designing Autonomous Robot Navigation System Based On Behavior Coordination, Ngo Long Thanh, Pham Long The, Nguyen Phuong Hoang
An Approach Designing Autonomous Robot Navigation System Based On Behavior Coordination, Ngo Long Thanh, Pham Long The, Nguyen Phuong Hoang
ASEAN Journal on Science and Technology for Development
Robot navigation using fuzzy behavior is suited in unknown and unstructured environment in which each behavior have an individual task. This paper deals with an approach designing autonomous robot navigation system based on fuzzy behaviors including collision avoidance, wall-following, go-to-target. The proposed hierarchy of fuzzy behaviors is used to fuse the command in which each behavior is a fuzzy inference system and its outputs are fuzzy sets. Its inputs are information fused from sensors using fuzzy directional relationship. The simulation results with some statistics show that the system works correctly.
Simulated-Data Adaptation Based Piecewise Linear Transformation For Robust Speech Recognition, Thatphithakkul Nattanun, Kruatrachue Boontee, Wutiwiwatchai Chai, Marukatat Sanparith, Boonpiam Vataya
Simulated-Data Adaptation Based Piecewise Linear Transformation For Robust Speech Recognition, Thatphithakkul Nattanun, Kruatrachue Boontee, Wutiwiwatchai Chai, Marukatat Sanparith, Boonpiam Vataya
ASEAN Journal on Science and Technology for Development
This paper proposes an efficient method of simulated-data adaptation for robust speech recognition. The method is applied to tree-structured piecewise linear transformation (PLT). The original PLT selects an acoustic model using tree-structured HMMs and the acoustic model is adapted by input speech in an unsupervised scheme. This adaptation can degrade the acoustic model if the input speech is incorrectly transcribed during the adaptation process. Moreover, adaptation may not be effective if only the input speech is used. Our proposed method increases the size of adaptation data by adding noise portions from the input speech to a set of prerecorded clean …
The Synthesis Of A Novel Bibenzopyran Relied On Electrooxydation Of Malloapelta B By Cyclic Voltammetry, Binh Phan Thi, Ninh Bui Hai, Minh Chau Van, Nam Nguyen Hoai, Huong Le Mai, Kiem Phan Van
The Synthesis Of A Novel Bibenzopyran Relied On Electrooxydation Of Malloapelta B By Cyclic Voltammetry, Binh Phan Thi, Ninh Bui Hai, Minh Chau Van, Nam Nguyen Hoai, Huong Le Mai, Kiem Phan Van
ASEAN Journal on Science and Technology for Development
A novel bibenzopyran named bimalloapelta (1) was synthesized relying on electrooxydation of malloapelta B by cyclic voltammetry in acetonitril adding LiClO4 0.1 M as supporting electrolyte. Its structure determination based on extensive NMR studies and ESI mass spectral measurements. The new compound showed significant cytotoxicity againsts two cancer cell lines as human hepatocellular carcinoma (Hep-2; IC50: 0.46 µg/m) and rhabdosarcoma (RD; IC50: 0.33 µg/m). These results were the same that of malloapelta B (Hep-2, IC50: 0.49 µg/ml and KB, IC50: 0.54 µg/ml).
Survivability In Metro Ring Network Using Oxadm, Ab-Rahman Mohammad Syuhaimi, Shaari Sahbudin
Survivability In Metro Ring Network Using Oxadm, Ab-Rahman Mohammad Syuhaimi, Shaari Sahbudin
ASEAN Journal on Science and Technology for Development
The optical cross add and drop multiplexing (OXADM) node described in this paper increases the capacity, flexibility and reliability of the trunk-line optical network used for data communication. It features two different bandwidths which operate in working and protection line in a ring configuration. The OXADM has the same features of the conventional OADM node but with more efficiency and reliability. The OXADM prototype system focuses on providing survivability through restoration against failures, such as cable/fiber cut in optical layer with ring topology. Two types of restoration scheme have been proposed to ensure data flow continuously by means of linear/ …
Optical Studies Of Penicillin Group In Relation To Their Medical Activity, Kumar R. Jeevan, Prasad G.V.R., Shoaib S.Md., Devadanam G. Paul, Fakruddin K.
Optical Studies Of Penicillin Group In Relation To Their Medical Activity, Kumar R. Jeevan, Prasad G.V.R., Shoaib S.Md., Devadanam G. Paul, Fakruddin K.
ASEAN Journal on Science and Technology for Development
The study of Medical activity of antibiotics is gaining momentum now a days owing to the importance of their curative values. The Medical Activity correlated to molecular interactions,can be studied by various physical techniques, at present optical methods like Refractometry and Polarization are used to study the activity of a few antibiotics like Penicillin. The Refractive Indices Mean Molecular Polarizability Diamagnetic Susceptibilities and Electron Ionisation Cross Section are interpreted in terms of dosages and the toxic effects if any due to over dosages are discussed critically.
Flexural Stress Analysis Of Rigid Pavements Using Axi-Symmetric And Plane Strain Fem, Sawant V.A., Norazzlina M.S.
Flexural Stress Analysis Of Rigid Pavements Using Axi-Symmetric And Plane Strain Fem, Sawant V.A., Norazzlina M.S.
ASEAN Journal on Science and Technology for Development
The design of pavement involves a study of soils and paving materials, their response under load for different climatic conditions. In the present study, an attempt has been made to compare stresses predicted using two finite element analyses. First analysis is based on the twodimensional plane strain assumption where as in second approach axi-symmetric condition is assumed to consider three-dimensional behavior of rigid pavement. The results are compared with flexural stresses obtained from conventional Portland Cement Association method. The computed flexural stresses obtained from axi-symmetric condition are found to be in close agreement with PCA method. Results of plane strain …
Design And Implementation Of A Vhdl Processor For Dct Based Image Compression, Islam Md. Shabiul, Bhuyan M.S., Beg M. Salim, Othman Masuri
Design And Implementation Of A Vhdl Processor For Dct Based Image Compression, Islam Md. Shabiul, Bhuyan M.S., Beg M. Salim, Othman Masuri
ASEAN Journal on Science and Technology for Development
This paper describes the design and implementation of a VHDL processor meant for performing 2D-Discrete Cosine Transform (DCT) to use in image compression applications. The design flow starts from the system specification to implementation on silicon and the entire process is carried out using an advanced workstation based design environment for digital signal processing. The software allows the bit-true analysis to ensure that the designed VLSI processor satisfies the required specifications. The bit-true analysis is performed on all levels of abstraction (behavior, VHDL etc.). The motivation behind the work is smaller size chip area, faster processing, reducing the cost of …