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Articles 571 - 590 of 590

Full-Text Articles in Biotechnology

Design And Construction Of Automized Assembly Application, Htwe E.E, Hatanaka S, Akiyama T Jun 2012

Design And Construction Of Automized Assembly Application, Htwe E.E, Hatanaka S, Akiyama T

ASEAN Journal on Science and Technology for Development

Nowadays the main stream of current automatic process and assembly is on intermittent transportation. Robot control systems can be divided into motion control and force control depending on the work. Assembly work is necessary to consider the state of force applied by detection of the force or moment on the fingers of the gripper. In this project, four groups designed and developed each one of the stages of the workpieces until the final piece was delivered; it was composed of three different workpieces. The mechanism was designed to set the shaft and fasten the screw into a vacancy in a …


Ferromagnetic Order In The Intermetallic Alloys Lani5-Xmgx, Ba D.N, Tai L.T, Trung N.T, Huy N.T Jun 2012

Ferromagnetic Order In The Intermetallic Alloys Lani5-Xmgx, Ba D.N, Tai L.T, Trung N.T, Huy N.T

ASEAN Journal on Science and Technology for Development

The influences of the substitution of Ni with Mg on crystallographic and magnetic properties of the intermetallic alloys LaNi5-xMgx (x ≤ 0.4) were investigated. The X-ray diffraction patterns showed that all samples were of single phase, and the lattice parameters, a and c, decreased slightly upon chemical doping. LaNi5 is well known as an exchange-enhanced Pauli paramagnet. Interestingly, in LaNi5-xMgx, the ferromagnetic order existed even with a small amount of dopants; the Curie temperature reached the value of room temperature for x = 0.2, and enhanced with increasing x.


Implementation Of A Communication Satellite Orbit Controller Design Using State Space Techniques, Hla M.T, Lae Y.M, Kyaw S.L, Zaw M.N Jun 2012

Implementation Of A Communication Satellite Orbit Controller Design Using State Space Techniques, Hla M.T, Lae Y.M, Kyaw S.L, Zaw M.N

ASEAN Journal on Science and Technology for Development

This research is of great importance for controlling the altitude of a satellite, especially one used for global communications in a geo-stationary orbit. The objective of this research was to advance a design based on the modelling of an orbit controller for a satellite orbiting into a circular orbit. This encompasses a good understanding of the system’s dynamics. Once a satellite is launchedinto a desired orbit, it never remains in this ideal orbit. The external forces present in space cause perturbations to the ideal orbit. To bring the satellite back into the desired orbit, on-board thrusters provide the in-orbit propulsion. …


Bond Strength Of Glued-In Rods In Malaysian Tropical Timber As Influenced By Adhesive, Diameter And Glueline Thickness, Za'ba N.E.L, Ahmad Z, Ibrahim A Jun 2012

Bond Strength Of Glued-In Rods In Malaysian Tropical Timber As Influenced By Adhesive, Diameter And Glueline Thickness, Za'ba N.E.L, Ahmad Z, Ibrahim A

ASEAN Journal on Science and Technology for Development

Failure in wood structure is mainly caused by improper connection design, construction (fabrication) details, or serviceability. Besides using traditional bolting methods such as nails, screws and bolts to join members, timber members also can be connected by using bonded-in joints. However, current knowledge in the use of this type of timber connection is still limited. This study investigated the performance of bonded-in pultruded rods in timber as connections by exploring the effect of a few parameters such as rod type, diameter of the rod, adhesive type and thickness of the glueline. Pull-out tests were used to characterize the strength of …


Performance Evaluation Of A Uasb Reactor Using Dairy Wastes, A Ali, S Khan, K.A. Khan Jun 2012

Performance Evaluation Of A Uasb Reactor Using Dairy Wastes, A Ali, S Khan, K.A. Khan

ASEAN Journal on Science and Technology for Development

A UASB reactor of 6-litre capacity, made of acryl material, was operated continuously for 20–22 weeks in three different phases, using actual dairy mill effluent at a constant mesophilic temperature and neutral pH. The dairy wastewater was highly alkaline, turbid and milky in colour with a bad odour. The average COD and BOD concentrations of the dairy mill effluent were observed to be 2945 mg/l and 1070 mg/l, respectively. Phase I was the start-up phase, with OLR of 0.13 g COD/l.d. SLR, effluent VFAs, effluent TSS, biogas production and methane composition observed during this phase were 1.4 g COD/g VSS.d, …


Recycling Mimeograph-Printed Newsprint Paper, Mari E. L, Torres A.S, Austria C.O Nov 2011

Recycling Mimeograph-Printed Newsprint Paper, Mari E. L, Torres A.S, Austria C.O

ASEAN Journal on Science and Technology for Development

Virgin newsprint paper from thermo-mechanical pulp was subjected to a laboratory recycling scheme, which involved mimeograph-printing, re-pulping, de-inking, washing, refining, and handsheetforming, without adding other fibre in between cycles. Fibre dimension, pulp freeness and paper properties were determined after each cycle until the fifth, at which about 20% of the original material remained. The remaining fibre was then mixed with virgin pulp, the original newsprint and unsorted mixed office waste to determine the proportion necessary for acceptable properties. The results indicated remarkable modification in distribution of fibre properties, a decreasing amount of long fibre with corresponding increase of short fibre …


Physical And Mechanical Properties Of Jute Mat Reinforced Epoxy Composites, Sadaf S.M, Siddik M, Ahsan Q Nov 2011

Physical And Mechanical Properties Of Jute Mat Reinforced Epoxy Composites, Sadaf S.M, Siddik M, Ahsan Q

ASEAN Journal on Science and Technology for Development

Cellulose jute fibre offers a number of benefits as reinforcement for synthetic polymers since it has a high specific strength and stiffness, low hardness, relatively low density and biodegradability. To reduce moisture uptake and hence to improve the mechanical properties of the composites, bleached jute mats were incorporated as reinforcing elements in the epoxy matrix. Composites at varying volume fractions and different orientations of jute mat were fabricated by hot compression machine under specific pressures and temperatures. Tensile, flexure, impact and water absorption tests of composites were conducted. Jute mat oriented at (0 ± 45–90)° composites showed reduced strength compared …


Nutrient Composition Of Artocarpus Champeden And Its Hybrid (Nanchem) In Negara Brunei Darussalam, Lim L.B.L, Chieng H.I, Wimmer F.L Nov 2011

Nutrient Composition Of Artocarpus Champeden And Its Hybrid (Nanchem) In Negara Brunei Darussalam, Lim L.B.L, Chieng H.I, Wimmer F.L

ASEAN Journal on Science and Technology for Development

The flesh and seeds of ripened and unripened Artocarpus champeden and its ripened hybrid (Nanchem) were analyzed for their moisture, ash, crude fibre, crude protein, crude fat, total carbohydrate, energy and mineral content. Generally, unripened A. champeden which is always treated and cooked as a vegetable contains higher amounts of moisture, ash, crude fibre and crude protein for its flesh than ripened A. champeden and Nanchem. Ripened A. champeden and Nanchemhave higher total carbohydrates and energy content than the unripe fruit. Similarly, the unripened A. champeden seed has more nutritional components in terms of moisture, ash, crude fibre, crude protein, …


Field And Laboratory-Based Approach For The Determination Of Friction Angle Of Geological Discontinuities Of Malaysian Granites, Ghani R. A, Goh T. L, Hariri A. M, Baizura Y. N Nov 2011

Field And Laboratory-Based Approach For The Determination Of Friction Angle Of Geological Discontinuities Of Malaysian Granites, Ghani R. A, Goh T. L, Hariri A. M, Baizura Y. N

ASEAN Journal on Science and Technology for Development

The basic friction angle, Φb for artificially sawn discontinuity planes for fresh granite, as determined by tilt testing, has an average value of 30º. For the natural rough discontinuity surfaces, a wide range of values have been determined for the peak friction angle, Φpeak ranging from 47º to a maximum value of 80º, depending on the joint roughness coefficient (JRC). The average values of the friction angles for the different degrees of roughness were as follows: JRC 2–4 = 58°; JRC 6–8 = 60°; JRC 8–10 = 47°; JRC 12–14 = 60°; JRC 14–16 = 71° ; JRC 18–20 = …


Usage Of Uasb Reactor To Assess Feasibility Of Treatment Of Paper Mill Effluent, Arshad A, Hashim N.H, Ghazala N Nov 2011

Usage Of Uasb Reactor To Assess Feasibility Of Treatment Of Paper Mill Effluent, Arshad A, Hashim N.H, Ghazala N

ASEAN Journal on Science and Technology for Development

Upflow anaerobic sludge blanket (UASB) reactors R-I and R-II, each with an effective volume of 6.0 l were used to study the treatability of actual effluent obtained from paper mills at a mesophilic temperature and neutral pH. Methanol, as a source of an easily biodegradable substance along with activated carbon of effective size 1.5 mm–2.5 mm were added to the reactor R-I to a total depth of 12 cm to evaluate its efficiency. The pH of both the reactors were kept constant at neutral by adding an external buffer solution of 0.03 M NaHCO3 with the feed solution. It was …


Assessment Of The Treatment Of Textile Mill Effluent Using Uasb Reactor, Arshad A, Hashim N.H, Kashif A.K, Bashir A Nov 2011

Assessment Of The Treatment Of Textile Mill Effluent Using Uasb Reactor, Arshad A, Hashim N.H, Kashif A.K, Bashir A

ASEAN Journal on Science and Technology for Development

This study was designed to evaluate the feasibility of the treatment of actual textile mill effluent using a upflow anaerobic sludge blanket (UASB) reactor. The main objective of this study was to generate design aids; in terms of organic loading rate (OLR), hydraulic retention time (HRT) versus chemical oxygen demand (COD) and colour removal in the textile effluent using a UASB reactor at neutral pH and constant mesophilic temperature. The COD, colour and total suspended solids concentration of the textile wastes used in the study were analyzed as 5440 mg/l, 3280 mg/l, 2320 units and 955 mg/l, respectively. The UASB …


Optical Sensor Based On Surface Plasmon Resonance Measurements, Yunus W. Mahmood Mat, Mokhtar Rosmiza, Moksin Mohd Maarof, Peng Chong Boon, Yeh Lee Woei Nov 2000

Optical Sensor Based On Surface Plasmon Resonance Measurements, Yunus W. Mahmood Mat, Mokhtar Rosmiza, Moksin Mohd Maarof, Peng Chong Boon, Yeh Lee Woei

ASEAN Journal on Science and Technology for Development

Optical Sensor Based on Surface Plasmon Resonance Measurements


Modelling Heat Transfer In Cooked Tuna During Cooling, Tansakul Ampawan, Ngamna Tipaporn Nov 2000

Modelling Heat Transfer In Cooked Tuna During Cooling, Tansakul Ampawan, Ngamna Tipaporn

ASEAN Journal on Science and Technology for Development

Modelling Heat Transfer in Cooked Tuna During Cooling


Wear Of Ceramic Tools When Machining Nodular Cats Iron, Husni L.A, Choudhory C, Ghani A.K Nov 2000

Wear Of Ceramic Tools When Machining Nodular Cats Iron, Husni L.A, Choudhory C, Ghani A.K

ASEAN Journal on Science and Technology for Development

Wear of Ceramic Tools When Machining Nodular Cats Iron


Energy Potential And Utilization Of Plantation Crops In Malaysia, Lim K.O, Alaudin Zainal Alimudin Zainal, Quadir Ghulam Abdul, Abdullah Mohd, Zulkifly Nov 2000

Energy Potential And Utilization Of Plantation Crops In Malaysia, Lim K.O, Alaudin Zainal Alimudin Zainal, Quadir Ghulam Abdul, Abdullah Mohd, Zulkifly

ASEAN Journal on Science and Technology for Development

Energy Potential and Utilization of Plantation Crops in Malaysia


A Novel Penalty Scheme In Genetic Algorithms For Structural Design Optimization, Nanakorn Pruettha, Meesomklin Konlakartn Nov 2000

A Novel Penalty Scheme In Genetic Algorithms For Structural Design Optimization, Nanakorn Pruettha, Meesomklin Konlakartn

ASEAN Journal on Science and Technology for Development

A Novel Penalty Scheme in Genetic Algorithms For Structural Design Optimization


Natural And Combination Fish Aggregating Devices (Fads) As Tools For Fish Aggregation In Lake Kenyir, Trengganu, Malaysia, Ibrahim Sakri, Matusin Julaihi, Hajisamae Sukree Nov 2000

Natural And Combination Fish Aggregating Devices (Fads) As Tools For Fish Aggregation In Lake Kenyir, Trengganu, Malaysia, Ibrahim Sakri, Matusin Julaihi, Hajisamae Sukree

ASEAN Journal on Science and Technology for Development

Natural and Combination Fish Aggregating Devices (FADS) as Tools for Fish Aggregation in Lake Kenyir, Trengganu, Malaysia


Radon And Its Progeny In Outdoor Air, Hu S. J, Tan K. S Nov 2000

Radon And Its Progeny In Outdoor Air, Hu S. J, Tan K. S

ASEAN Journal on Science and Technology for Development

Radon and its Progeny in Outdoor Air


The Total Capitance, Transient And Frequency Response Of Mfb, Fdnr And Leaperog Techniques For Bilinear Switched-Capacitor Network, Hadzer C. M, Izhar M. Nov 2000

The Total Capitance, Transient And Frequency Response Of Mfb, Fdnr And Leaperog Techniques For Bilinear Switched-Capacitor Network, Hadzer C. M, Izhar M.

ASEAN Journal on Science and Technology for Development

The Total Capitance, Transient and Frequency Response of MFB, FDNR and Leaperog Techniques For Bilinear Switched-Capacitor Network


Radical Combustion: New Concept For Two Stroke Engines, Al-Kaf Saqaff A, Suhaimi Ahmad, Abbas Hakim A Nov 2000

Radical Combustion: New Concept For Two Stroke Engines, Al-Kaf Saqaff A, Suhaimi Ahmad, Abbas Hakim A

ASEAN Journal on Science and Technology for Development

Radical Combustion: New Concept For Two Stroke Engines