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Articles 1 - 15 of 15
Full-Text Articles in Life Sciences
Performance Of Jatropha Oil-Based Biodiesel Fuel In A Single-Cylinder Four-Stroke Diesel Engine, Win H.H
Performance Of Jatropha Oil-Based Biodiesel Fuel In A Single-Cylinder Four-Stroke Diesel Engine, Win H.H
ASEAN Journal on Science and Technology for Development
Studies on alternative fuels have been active in Myanmar because the rapid mechanization of the agricultural sector demands higher diesel consumption. Jatropha oil-based biodiesel is one of the potential alternatives because of the relative ease of growing and producing this plant. In this study, both the experimental and theoretical analyses of Jatropha oil-based B20 biodiesel wereperformed and compared with conventional diesel. First, B20 was prepared by the base-catalyzed transesterification of the oil and its properties were measured. Second, separate performance tests were conducted on diesel and the biodiesel fuel using a LEYER-16 diesel engine. The speed range of interest was …
Developing A Generalized Combined Model For Gas-Liquid Two-Phase Flow Pressure Drop In Elbow Bends, Aung N.Z, Yuwono T
Developing A Generalized Combined Model For Gas-Liquid Two-Phase Flow Pressure Drop In Elbow Bends, Aung N.Z, Yuwono T
ASEAN Journal on Science and Technology for Development
In this work, a generalized combined model was proposed for prediction of two-phase flow pressure drop in elbow bends. In this proposed model, restriction, frictional and elevational losses were considered separately. The frictional and static losses were approached by using Lockhart_Martinelli correlation. This model was tested to predict the pressure drop across the elbows with inside diameter of 0.036 m and R/D = 0.6, 2.5. The superficial liquid velocity was varied in the range of0.3~1.1 m/s and volumetric gas quality was varied from 0.02~0.3. The results from this model had good predictions with a maximum error of ±13% for long …
Ethanol Production In Yeasts Isolated From Fermented Kitchen Waste, Wong S, Wong S.K, Bujang J.S
Ethanol Production In Yeasts Isolated From Fermented Kitchen Waste, Wong S, Wong S.K, Bujang J.S
ASEAN Journal on Science and Technology for Development
Microbial ethanol is a potential substitute for the non-renewable fossil fuel which is depleting. Yeasts have been long and extensively studied for ethanol production. The objectives of this study were to isolate yeasts from fermented kitchen waste and to determine their ethanol production performances. A number of fifteen yeasts were isolated from fermented kitchen waste. The yeastswere then grouped based on their ability to ferment different types of sugars. Three yeast isolates were selected for the analysis of ethanol production. Fermentation was carried out for 72 h in yeast extract peptone dextrose broth containing 18% glucose. Fourier transform infrared attenuated …
Chemical Composition Of Leaf And Seed Oils Of Dryobalanops Aromatica Gaertn. (Dipterocarpaceae), Kamariyah A.S, Ozek T, Demirci B, Baser K.H.C.
Chemical Composition Of Leaf And Seed Oils Of Dryobalanops Aromatica Gaertn. (Dipterocarpaceae), Kamariyah A.S, Ozek T, Demirci B, Baser K.H.C.
ASEAN Journal on Science and Technology for Development
The essential oils of the leaves and seed of Dryobalanops aromatica Gaertn. obtained by hydrodistillation resulted in 0.07% and 1.89% yield, respectively. These oils were then examined by GC-MS. Eighty-three components (plus an unknown) were identified from the leaf oil, representing 92% of the oil. Oxygenated monocyclic monoterpenes (terpinen-4-ol 15%, α-terpineol 16%), bicyclic monoterpene (α-pinene 7%) and oxygenated bicyclic sesquiterpene (globulol 8%) were the major constituents. In the case of the seed oil, 31 components were identified, representing 100% of the oil, while acyclic monoterpene (myrcene 5%), monocyclic monoterpene (limonene 6%), bicyclic monoterpenes (α-pinene 41%, α-thujene and b-pinene 13% each, …
Evaluation Of Mixture Viscosity Models In The Prediction Of Two-Phase Flow Pressure Drops, Aung N.Z, Yuwono T
Evaluation Of Mixture Viscosity Models In The Prediction Of Two-Phase Flow Pressure Drops, Aung N.Z, Yuwono T
ASEAN Journal on Science and Technology for Development
Nine existing mixture viscosity models were tested for predicting a two-phase pressure drop for oil-water flow and refrigerant (R.134a) flow. The predicted data calculated by using these mixture viscosity models were compared with experimental data. Predicted data from using one group of mixture viscosity models had a good agreement with the experimental data for oil-water two-phase flow. Another group of viscosity models was preferable for gas-liquid flow, but these models gave underestimated values with an error of about 50%. A new and more reliable mixture viscosity model was proposed for use in the prediction of pressure drop in gas-liquid two-phase …
Utilization Of Agricultural Wastes In The Manufacture Of Composite Boards, Macatangay P.M, Mangundayao E.C, Rosales C.A.M
Utilization Of Agricultural Wastes In The Manufacture Of Composite Boards, Macatangay P.M, Mangundayao E.C, Rosales C.A.M
ASEAN Journal on Science and Technology for Development
Development of useful composite materials out of agricultural waste has become a desirable option in recycling. This led to the production of composite boards being used in the construction industry. In this paper, three types of available agricultural wastes in the province of Batangas — peanut shells, corn husks and banana sheath — were independently utilized in the production of composite boards. The raw materials were either air or sun dried, then crushed (for peanut shells) and extracted (for banana sheath and corn husks) before mixing with the binder. Urea formaldehyde (UF) was used as binder for peanut shells and …
Respiration And Carbon Dioxide Accumulation In Soil Microcosms, Jasity Murphy
Respiration And Carbon Dioxide Accumulation In Soil Microcosms, Jasity Murphy
Pursuit - The Journal of Undergraduate Research at The University of Tennessee
The thawing of permafrost leads to liberation of soil organic matter and microbial component resulting in significant effect on the carbon cycle. Changes in permafrost soils upon the global climate warming would significantly impact microbial soil activity. Currently, not a great deal is known about what happens to the microbial community after the permafrost thaws. The activity of microbial community was determined in microcosms experiment using respirometry. To assess the CO2 fluctuations during permafrost thawing a titration experiment was performed. Based on calculations using the respirometric equation it was found that CO2 production increases with temperature, core depth, …
Design And Construction Of Automized Assembly Application, Htwe E.E, Hatanaka S, Akiyama T
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 …
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
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 …
Nanoherbals In Human Healthcare: A Proposed Research And Development Roadmap I, Ahmad S, Hashim U
Nanoherbals In Human Healthcare: A Proposed Research And Development Roadmap I, Ahmad S, Hashim U
ASEAN Journal on Science and Technology for Development
Bioactive secondary metabolites derived from herbs are examined for their suitability of conversion into nanoforms having flexible morphological controls, surface stabilizations and surface functionalization. This can lead to stable chemical conjugations based on molecular recognition for their possible applications in the form of smart pharmaceuticals, nutraceuticals, cosmaceuticals and many other related areas of human healthcare using green chemistry routes. Using the principles of nanoscience and technology in association with genomics and proteomics, an attempt has been made to decipher whether a suitable form of drug discovery and targeted drug delivery like schemes arefeasible in case of such nano phytochemicals using …
Ferromagnetic Order In The Intermetallic Alloys Lani5-Xmgx, Ba D.N, Tai L.T, Trung N.T, Huy N.T
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
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. …
Nanoherbals In Human Healthcare: A Proposed Research And Development Roadmap Ii, Ahmad S, Hashim U
Nanoherbals In Human Healthcare: A Proposed Research And Development Roadmap Ii, Ahmad S, Hashim U
ASEAN Journal on Science and Technology for Development
Bioactive secondary metabolites derived from herbs are examined for their suitability of conversion into nanoforms having flexible morphological controls, surface stabilizations and surface functionalization. This can lead to stable chemical conjugations based on molecular recognition for their possible applications in the form of smart pharmaceuticals, nutraceuticals, cosmaceuticals and many other related areas of human healthcare using green chemistry routes. Using the principles of nanoscience and technology in association with genomics and proteomics, an attempt has been made to decipher whether a suitable form of drug discovery and targeted drug delivery like schemes are feasible in case of such nano phytochemicals …
Performance Evaluation Of A Uasb Reactor Using Dairy Wastes, A Ali, S Khan, K.A. Khan
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, …
A Thousand Tiny Pieces: The Federal Circuit’S Fractured Myriad Ruling, Lessons To Be Learned, And The Way Forward, Jonathan R. K. Stroud
A Thousand Tiny Pieces: The Federal Circuit’S Fractured Myriad Ruling, Lessons To Be Learned, And The Way Forward, Jonathan R. K. Stroud
IP Theory
No abstract provided.