Utilisation Of Various Agricultural Toastes For Chicken Meat Production,
2017
Universiti Brunei Darussalam
Utilisation Of Various Agricultural Toastes For Chicken Meat Production, Karossi Andi T., Siagian Patuan L. P., Sutedja Lenny
ASEAN Journal on Science and Technology for Development
No abstract provided.
Numerical Result For Variational Inequality Problems With Equality Constraint,
2017
Universiti Brunei Darussalam
Numerical Result For Variational Inequality Problems With Equality Constraint, Loi Pham Van
ASEAN Journal on Science and Technology for Development
In this paper we present some numerical results for illustrating a theoret- ical results obtained in our investigation in the field of variational inequality problems with constraint in the form of operator equation involving monotone operator.
Structural Characterization Of Agar Extracted From Six Red Seaweed Species Growing In The Coast Of Vietnam,
2017
Universiti Brunei Darussalam
Structural Characterization Of Agar Extracted From Six Red Seaweed Species Growing In The Coast Of Vietnam, Van Tran Thi Thanh, Ly Bui Minh, Buu Ngo Quoc, Kinh Chu Dinh
ASEAN Journal on Science and Technology for Development
Polysaccharides extracted from six red seaweed species growing in Vietnam have been studied. Characterisation of their structure by chemical and spectroscopic methods showed that all of them have a basic repeating structure of alternating 3-linked b-D-galactopyranosyl and 4-linked 3,6-anhydro a-L-galactopyranosyl units with substituted methyl ether groups. The native agar offers only weak gelling abilities owing to the 4-linked a-L-galactopyranosyl 6-sulfate as its precursor. Conversion of this unit into the corresponding 3,6-anhydride by treating with hot alkali generally led to gel strength increasing. The agars from G. fisheri and G. firma are poorly substituted, while those from G.asiatica, G.tenustipitata and G. …
Integrated Remote Sensing And Gis For Modeling Economic Rehabilitation Development Of Ex-Mine Sites,
2017
Universiti Brunei Darussalam
Integrated Remote Sensing And Gis For Modeling Economic Rehabilitation Development Of Ex-Mine Sites, Junaidi Junaidi, Goh Eric K.H.
ASEAN Journal on Science and Technology for Development
The potential environmental impacts of mining, increasing environmental legislation and public awareness have received increased attention world-wide in the last two decades. The focus of concern by the industry, environmental regulatory agencies and members of the public is the systematic rehabilitation of ex-mine sites to improve the quality at site for potential future commercial land use. The minerals extracted from these mine/quarry sites are essential in the construction, semiconductor, high-technology, ceramic and other manufacturing sectors for further industrial development. However, efficient engineering design and systematic economic evaluation of mine sites for site rehabilitation are required in maintaining the expected standards …
Power Signal Disturbance Classification Using Wavelet Based Neural Network,
2017
Universiti Brunei Darussalam
Power Signal Disturbance Classification Using Wavelet Based Neural Network, Suja S., Jerome Jovitha
ASEAN Journal on Science and Technology for Development
In this paper, the power signal disturbances are detected using discrete wavelet transform (DWT) and categorized using neural networks. This paper presents a prototype of power quality disturbance recognition system. The prototype contains three main components. First a simulator is used to generate power signal disturbances. The second component is a detector which uses the technique of DWT to detect the power signal disturbances. DWT is used to extract disturbance features in the power signal. The third component is neural network architecture to classify the power signal disturbances.
Characteristics Of Lithium Lanthanum Titanate Thin Films Made By Electron Beam Evaporation From Nanostructured La0.67-Xli 3xtio3 Target,
2017
Universiti Brunei Darussalam
Characteristics Of Lithium Lanthanum Titanate Thin Films Made By Electron Beam Evaporation From Nanostructured La0.67-Xli 3xtio3 Target, Dinh Nguyen Nang, Trong Le Dinh, Long Pham Duy
ASEAN Journal on Science and Technology for Development
Bulk nanostructured perovskites of La0.67-xLi3xTiO3 (LLTO) were prepared by using thermally ball-grinding from compounds of La2O3, Li2CO3 and TiO2. From XRD analysis, it was found that LTTO materials were crystallized with nano-size grains of an average size of 30 nm. The bulk ionic conductivity was found strongly dependent on the Li+ composition, the samples with x = 0.11 (corresponding to a La0.56Li0.33TiO3 compound) have the best ionic conductivity, which is ca. 3.2 x 10-3 S/cm at room temperature. The LLTO amorphous films were made by electron beam deposition. At room temperature the smooth films have ionic conductivity of 3.5 x …
Electrochemical Performances And Corrosion Inhibition Of Aa6061 In Tropical Seawater,
2017
Universiti Brunei Darussalam
Electrochemical Performances And Corrosion Inhibition Of Aa6061 In Tropical Seawater, Rosliza R., Senin H.B., Wan Nik W.B.
ASEAN Journal on Science and Technology for Development
The corrosion performances of AA6061 aluminum alloy in tropical seawater was investigated using potentiodynamic polarization, electrochemical impedance spectroscopy (EIS) and their morphology was characterized by the scanning electron microscopy (SEM). The results showed that the presence of sodium benzoate as an inhibitor significantly decrease the corrosion current densities (i corr ), corrosion rates and double layer capacitance (C dl ), whilst increasing the polarization resistance (R p ). The scanning electron microscopy (SEM) images indicated that the mechanism of charge transfer and the formation of thin film have been taken place on the specimens.
The Evidence Of Non N-Glycan Linked Mannose In Exochitinase (42 Kda) From Trichoderma Harzianum Bio10671 Glycosylation,
2017
Universiti Brunei Darussalam
The Evidence Of Non N-Glycan Linked Mannose In Exochitinase (42 Kda) From Trichoderma Harzianum Bio10671 Glycosylation, Mustafa Muskhazli, Zaman Faridah Qamaruz, Ramli Salfarina, Tohfah Nor Farizan, Ithnin Nalisha, Wallis Greg
ASEAN Journal on Science and Technology for Development
Chitinase 42 kDa produced by Trichoderma harzianum has been proven as a prime compound to be excreted onto the hyphae of the pathogen causing localised cell wall lysis at the point of interaction. This finally initiate the process of the host cell becomes empty of cytoplasm, disintegrates and shows a rapid collapse. This study investigates the existence of N-glycan linked mannose in chitinase 42 kDa produced by the Malaysian T. harzianum strain BIO10671. The chitinase 42 kDa from T. harzianum BIO10671 was initially purified using anion exchange chromatography prior to a series of experiments such as immunoblotting against the chitinase …
New Findings Notes Of The Parasitic Nematodes Of Terrestrial Invertebrates In Viet Nam,
2017
Universiti Brunei Darussalam
New Findings Notes Of The Parasitic Nematodes Of Terrestrial Invertebrates In Viet Nam, Luc Pham Van, Thanh Nguyen Vu, Spiridonov S.E.
ASEAN Journal on Science and Technology for Development
First results of the parasitological survey of Vietnamese terrestrial invertebrates performed in 2007 demonstrate extreme diversity of nematodes parasitic in these animals. The most interesting new findings are nematodes of four superfamilies: Drilonematoidea, Thelastomatoidea, Rhabditoidea and Ransomnematoidea. Further progress was achieved in last three years in the studies of Drilonematoidea nematodes – coelomic parasites of earthworms. One new genus and several new species were discovered in large megascolecids collected in Bac Bo (Tam Dao) and Nam Bo (Bidoup - Nui Ba N.P.). Passalidae beetles are colonial coleopterans inhabiting rotten wood in tropical forests throughout tropics, and are known as characteristic …
Synthesis Of Acetic Acid From Ethanol By Electrooxidation Technique Using Ni-Cu-Pvc Electrode,
2017
Universiti Brunei Darussalam
Synthesis Of Acetic Acid From Ethanol By Electrooxidation Technique Using Ni-Cu-Pvc Electrode, Riyanto Riyanto, Othman Mohamed Rozali, Salimon Jumat
ASEAN Journal on Science and Technology for Development
A usage of Ni-Cu-PVC electrode for the oxidation of ethanol by electrochemical technique will be reported in this paper. In this work, the effect of electrodes on the yields of acetic acid was determined. Electrode used was made of the mixtures of Ni powder, Cu powder and of polyvinyl chloride (PVC) with various percentages. Electrooxidation of 0.20 M ethanol in 0.16 M KOH (24 mL) were carried out using chrono coulometry (CC) at a potential of 1050 mV for 6 hours with continious stirring. Electrooxdation result obtained was analyzed using High Performance Liquid Chromatography (HPLC). The test result shows that …
Effect Of Injector Opening Pressure On Performance And Emission Of Lpg - Methyl Ester Of Mahua Oil Dual Fuel Engine,
2017
Universiti Brunei Darussalam
Effect Of Injector Opening Pressure On Performance And Emission Of Lpg - Methyl Ester Of Mahua Oil Dual Fuel Engine, Kapilan N.
ASEAN Journal on Science and Technology for Development
One of variables, which affect the performance and emission of dual fuel engine is injection pressure. Hence in the present work, effect of Injector opening pressure on the performance of the engine was studied. A four stroke single cylinder engine was modified to work in dual fuel mode. Three injector opening pressures (180 bar, 200 bar and 220 bar) were considered for the present work. Methyl ester of mahua oil was used as pilot fuel and LPG was used as primary fuel. From the test results, it was observed that the injector opening pressure of 200 bar results in higher …
Potassium Permanganate As Oxidant In The Cod Test For Saline Water Samples,
2017
Universiti Brunei Darussalam
Potassium Permanganate As Oxidant In The Cod Test For Saline Water Samples, Goh Chin-Ping, Lim Poh-Eng
ASEAN Journal on Science and Technology for Development
The objective of this study is to investigate the feasibility of applying potassium permanganate (KMnO4) as the oxidant in the COD test for highly saline water samples. Initially, the COD values of various glucose standard solutions were determined by three methods, namely the standard closed reflux dichromate (CODCr), the acidic permanganate (CODMn) and the alkaline permanganate (CODOH) methods. The results showed that at COD values lower than 20 mg/L, the standard dichromate method was not applicable due to its poor precision (RSD > 10%). The CODOH method was less effective compared to the CODMn method as the recoveries were 0.71 and …
Application Of Nmr In The Investigation Of Dynamic Tautomerism Of 4(3h)-Quinazolinone System,
2017
Universiti Brunei Darussalam
Application Of Nmr In The Investigation Of Dynamic Tautomerism Of 4(3h)-Quinazolinone System, My Pham Thi Thanh, Kinh Chu Dinh, Thuy Thanh Thi Thu, Vinh Nguyen Ngoc, Chi Nguyen Thi Phuong
ASEAN Journal on Science and Technology for Development
Tautomerism of 4(3H)-quinazolinone system with [(2-hydroxyphenyl)methylene]-2-(4oxoquinazolin-3(4H)-yl)acetohydrazide and N’-[(1E)-(4-hydroxy-3-methoxyphenyl)methylene]-2-(4-oxoquinazolin-3(4H)-yl)acetohydrazide as two representative compounds was investigated on the basis of 1H NMR method at coalescence with the help of line formprogramme. The dynamic parameters such as k, Ea, DG*, DH*, DS* were fully calculated with high reliability.
Aromatase Inhibitory And Cytotoxic Activities Of Chemical Constituents From The Vietnamese Medicinal Plant Ban-Chi-Lien (Scutellaria Barbata D. Don),
2017
Universiti Brunei Darussalam
Aromatase Inhibitory And Cytotoxic Activities Of Chemical Constituents From The Vietnamese Medicinal Plant Ban-Chi-Lien (Scutellaria Barbata D. Don), Thao Do Thi, Huan Le Quang, Hieu Do Khac, Chien Nguyen Quyet, Hung Nguyen Van
ASEAN Journal on Science and Technology for Development
Aromatase inhibitory and cytotoxic activities were determined for apigenin, luteolin and the new diterpene named scutebarbalactone VN, which were obtained by bioassay-guided fractionation and isolation from the methanol extract of the Vietnamese medicinal plant Banchi-lien (Scutellaria barbata D. Don). In the aromatase inhibition assay, an IC50 value of 3.36 mM was found for scutebarbalactone VN, while IC50 values of 7.2 mM and 7.95 mM were found for the positive controls aminoglutethimide and b-estradiol, respectively. In the cytotoxicity assays using a panel of human cancer cell lines, scutebarbalactone VN showed promising anticancer activity with IC50 ranging from 2.15 to 8.3 mM …
A Study On The Effect Of Noise And Vibration On Operators’ Readability Task Performance In A Mobile Driving Environment,
2017
Universiti Brunei Darussalam
A Study On The Effect Of Noise And Vibration On Operators’ Readability Task Performance In A Mobile Driving Environment, Khan Iqbal Ahmed, Mallick Z., Khan Zahid A.
ASEAN Journal on Science and Technology for Development
This paper presents a study in which the effect of noise and vibration on the task performance in a mobile driving environment is experimentally investigated. A readability kind of task, where a reading material was presented to the operators on a laptop screen was considered and the operators performed the task in a sitting posture without their back supported with the backrest of the seat. The task performance was measured in terms of mean number of characters read per minute by the operators, which served as data for statistical analysis. Results of the study showed that noise and vibration were …
Fault Location On A Distribution Feeder Using Fault Generated High Frequency Current Signatures,
2017
Universiti Brunei Darussalam
Fault Location On A Distribution Feeder Using Fault Generated High Frequency Current Signatures, Hizam Hashim, Crossley P.A.
ASEAN Journal on Science and Technology for Development
This paper describes how the fault generated travelling waves detected in the current signals at a single location on a distribution feeder can be used for fault location. The method identifies the fault section and the probable location of the fault by comparing the relative distance of each “peak” in the high frequency current signals to the known reflection points in the distribution feeder. The probable fault location is then used within a transient power system simulator that models the actual network. The resulting simulated current waveforms are then cross-correlated against the original signal. If the estimated fault location is …
Deformation Of Wood In Compression During Moisture Movement,
2017
Universiti Brunei Darussalam
Deformation Of Wood In Compression During Moisture Movement, Hamdan S., Osman M.S., Chew M.Y.
ASEAN Journal on Science and Technology for Development
This work presents the phenomenon of mechano-sorptive strain in the deformation of wood during moisture content (MC) changes. A series of experiments were designed to demonstrate the greatly enhanced deformation due to the mechano-sorptive effect. The purpose of this work is to show the magnitude of mechano-sorptive creep compared to the ordinary viscoelastic creep with applied compressive load. In order to do this, several conditions were induced. They were the moisture movement with MC change, moisture movement without MC change and conditions without moisture movement. Several apparatus were assembled to produce the desired conditions. Special care is taken to make …
Computation Of Bearing Capacity Factor Nq –Terzaghi And Prandtl Mechanism,
2017
Universiti Brunei Darussalam
Computation Of Bearing Capacity Factor Nq –Terzaghi And Prandtl Mechanism, Dewaikar D.M., Mohapatro B.G., Sawant V.A., Chore H.S.
ASEAN Journal on Science and Technology for Development
The unique values of the bearing capacity factors, Nq are obtained in respect of failure mechanisms suggested by Terzaghi and Prandtl using limit equilibrium approach. In this paper an attempt has been made to present the analysis integrating the Kotter’s equation with Terzaghi’s and Prandtl’s mechanisms using limit equilibrium conditions. The analysis presented here with some modifications in the exiting analyses computes the bearing capacity factor – Nq , the expressions of which are similar to the one given by Terzaghi [10] and Reissner [7] who had extended the pioneering work initiated by Prandtl [6]. The analysis reported here successfully …
Effects Of Sr Substitution On Crystalline Structure And Raman Spectra Of La2-Xsrxnio4+Δ,
2017
Universiti Brunei Darussalam
Effects Of Sr Substitution On Crystalline Structure And Raman Spectra Of La2-Xsrxnio4+Δ, Thanh Tran Dang, Hong Le Van
ASEAN Journal on Science and Technology for Development
Effects of Sr2+ substitution for La3+ on oxygen concentration and structure of La2-xSrxNiO4+δ have been observed by X-ray diffraction and Raman scattering. Oxygen concentration and unit cell volume of the material decrease monotonously in dependence of x. The vibration modes were calculated for La2NiO4 in K2NiF4 type structure with the group symmetry of I4/mmm. The Raman active modes for this symmetry were also theoretically identified. Raman back scattering spectra have been carried out for all the ceramic polycrystalline samples at room temperature. Two Raman lines at 224.6 cm-1 and 433 cm-1 , assigned to Eg and A1g vibration modes of …
Affine-Invariant Fourier Descriptors And Their Application In A Number Plate Recognizing System,
2017
Universiti Brunei Darussalam
Affine-Invariant Fourier Descriptors And Their Application In A Number Plate Recognizing System, Hai Nguyen Thanh, Long Pham The, Dinh Nguyen Cong
ASEAN Journal on Science and Technology for Development
This paper introduces a method for describing partial shapes that are affine-invariant. The proposed method facilitates the extraction of descriptors, which is effective for opened-curves and invariant to different viewpoints. This method helps to improve the performance and quality of real world object image recognizing systems. The proposed method was tested in a number plate recognition system.
