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Articles 511 - 540 of 590
Full-Text Articles in Biotechnology
Effect Of The Reciprocating Mass Of Slider-Crank Mechanism On Torsional Vibrations Of Diesel Engine Systems, Pasricha M.S. Pasricha, Hashim F.M.
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
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.
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.
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.
Detection Of Antifungal Compounds In Arabidopsis Thaliana And Brassica Oleracea By Thin Layer Chromatography ., Chong K.P., Mansfield J.W., Bennet M.H., Rossiter J.F.
Detection Of Antifungal Compounds In Arabidopsis Thaliana And Brassica Oleracea By Thin Layer Chromatography ., Chong K.P., Mansfield J.W., Bennet M.H., Rossiter J.F.
ASEAN Journal on Science and Technology for Development
Thin Layer Chromatography (TLC) was applied to detect antifungal compounds both in Arabidopsis thaliana and Brassica oleracea after elicited by various biotic and abiotic elicitors.From TLC bioassays the only strong zone of inhibition detected after challenged by Pseudomonas syringae pv.maculicola was from Arabidopsis tissue and later confirmed by spectrophotometry as camalexin but no corresponding phytoalexin was found in broccoli leaf.
G-Jitter Induced Free Convection Over A Vertical Flat Plate, Saeid Nawaf H.
G-Jitter Induced Free Convection Over A Vertical Flat Plate, Saeid Nawaf H.
ASEAN Journal on Science and Technology for Development
The effect of the periodic oscillation of the gravitational field, known as g-jitter, on the free convection from a vertical plate is investigated in the present paper. The problem has been simplified by the laminar boundary layer and Boussinesq approximations. The fully implicit finite-difference scheme is used to solve the dimensionless system of the governing equations.The results for laminar flow of air (Pr = 0.72) and water (Pr = 7.00) are presented for different values of the amplitudes and frequencies of the g-jitter. The results presented show the steady periodic variation of Nusselt number and the friction coefficient with the …
Dynamic Mechanical Thermal Analysis (Dmta) Of Thermoplastic Natural Rubber (Tpnr) Barium Ferrite (Bafe12o19) Composites, Hamdan S, Hasihim D.M.A, Yusop M
Dynamic Mechanical Thermal Analysis (Dmta) Of Thermoplastic Natural Rubber (Tpnr) Barium Ferrite (Bafe12o19) Composites, Hamdan S, Hasihim D.M.A, Yusop M
ASEAN Journal on Science and Technology for Development
filled with 0-6 volume percentage of barium ferrite was performed using a Polymer Laboratory- Dynamic Mechanical Thermal Analyser (PL-DMTA) over a range of temperature from -100 to 100°C at 10hz. The results showed that the storage modulus (E') of the composites below the transition temperature increase with filler content up to ~3-4 volume percentage. Incorporation of the filler does not change the matrix glass transition that occurs around -40°C but the damping curve becomes broader with increasing filler content. The addition of filler in the compositedoes not affect the glass transition and melting temperature. The blend of TPNR and barium …
Mesoporous Inorganic Membrane Reactor For Oxidative Coupling Of Methane, May N.C, Mohamed A.R, Bhatia S
Mesoporous Inorganic Membrane Reactor For Oxidative Coupling Of Methane, May N.C, Mohamed A.R, Bhatia S
ASEAN Journal on Science and Technology for Development
The mesoporous inorganic membrane has been developed and characterized for oxidative coupling of methane reactions. In this research, g-alumina membrane was modified with Lanthanum. The membrane has shown thermal stability in prolonged exposure to the high-temperature application of 600-900°C. The results were confirmed by TGA and OCM experimentations. TGA results showed only 2-3% loss from an initial weight that is mainly due to evaporation of water and release of the nitrate compound. The membrane was also found stable for at least a month of operationwhile the catalyst was being regenerated to regain its activity. The SEM cross-sections show successful deposition …
Associations Of Common -Thalassemia Mutations With -Globin Gene Frameworks In Northern Thailand, Sanguansermsri P, Shimbu D, Wongvilairat R, Sanguansermsri T
Associations Of Common -Thalassemia Mutations With -Globin Gene Frameworks In Northern Thailand, Sanguansermsri P, Shimbu D, Wongvilairat R, Sanguansermsri T
ASEAN Journal on Science and Technology for Development
This study aimed to characterize polymorphism of the b-globin gene (framework) among common b-thalassemia mutations found in northern Thailand. Thirty-one homozygous b-thalassemia major patients admitted to Chiang Mai University Hospital were identified using direct DNA sequencing method. Among 15 patients with homozygous of codon 41/42 (-TCTT), eight were homozygous of framework 1 (FW1), one was homozygous of FW3A, and the remainders were heterozygousof FW1 and FW3A. The gene frequencies of FW1 and FW3A in the patients were 0.733 (22/ 30) and 0.267 (8/30), respectively. All 11 patients with homozygous of codon 17 (A-T) were homozygous of FW3A, while three patients …
Cathodic Electrodeposition And Characterization Of Ni3se2 Thin Films, Anuar K, Zainal Z, Saravanan N, Kartini A.R
Cathodic Electrodeposition And Characterization Of Ni3se2 Thin Films, Anuar K, Zainal Z, Saravanan N, Kartini A.R
ASEAN Journal on Science and Technology for Development
Nickel selenide thin films have been potentiostatically electrodeposited on titanium substrate at room temperature from aqueous solution containing Ni-EDTA and Na2SeO3. Various deposition potentials were attempted in order to determine the optimum electrodeposition potential. The films were characterised using x-ray diffraction analysis (XRD) and the photoactivity of the electrosynthesised films were studied using linear sweep voltammetry (LSV). The band-gap energy was determined using UV-visible spectroscopy. The XRD analysis indicated the formationof polycrystalline Ni3Se2. The film exhibited p-type semiconductor behaviour with good photosensitivity. The bandgap energy (Eg) was about 1.4eV.
Characterization Of Lignin Precipitated From The Soda Black Liquor Of Oil Palm Empty Fruit Bunch Fibers By Various Mineral Acids, Mohamad Ibrahim M.N, Chuah S.B, Wan Rosli W.D.
Characterization Of Lignin Precipitated From The Soda Black Liquor Of Oil Palm Empty Fruit Bunch Fibers By Various Mineral Acids, Mohamad Ibrahim M.N, Chuah S.B, Wan Rosli W.D.
ASEAN Journal on Science and Technology for Development
Soda lignin from oil palm empty fruit bunch was directly isolated by various mineral acids i.e. sulfuric acid, hydrochloric acid, phosphoric acid and nitric acid at three levels of concentration (20% v/v, 60%v/v and concentrated). A comparison study was performed through physicochemical properties and structural features using FT-IR, UV, 13C-NMR and nitrobenzene oxidation. The FT-IR results showed that there is no significant difference between the main structures of the lignin isolated by various acids. However, low concentration of phosphoric acid is preferable because of its highest yield. The S: V: H ratio of 7-15:6-11:1 as evaluated by the nitrobenzene oxidation …
Correlation Between Thermal Diffusivity Variation And Quality Of Cold Preserved Fish, Ansari F.A, Abbas K.A, Megat Ahmad M.M.H
Correlation Between Thermal Diffusivity Variation And Quality Of Cold Preserved Fish, Ansari F.A, Abbas K.A, Megat Ahmad M.M.H
ASEAN Journal on Science and Technology for Development
The present paper deals with establishment of correlation between thermal behaviour and quality of cold preserved fish. Experiments were designed and transient temperature-time variations were recorded at the center and other three equidistant locations during air blast cooling of slab shaped pieces of fresh water fish. A number of pieces from the same lot were cold preserved at 3°C for a period of 28 days and experiments were repeated daily. Time-temperature records were used to determine thermal diffusivity of each sample using the empirical approach of the first author, reported elsewhere. It was observed that the measured thermal diffusivity increased …
Chemical Precipitation And Coatings Of Tin Selenide, Zainal Z, Saravanan N, Anuar K, Husein M.Z, Yunus W.M.M
Chemical Precipitation And Coatings Of Tin Selenide, Zainal Z, Saravanan N, Anuar K, Husein M.Z, Yunus W.M.M
ASEAN Journal on Science and Technology for Development
Tin selenide were prepared chemically in alkaline aqueous solution. The crystalline powder was coated onto microscope glass slides using polyvinyl alcohol solution. The coatings were subjected to annealing at various temperatures to study the effect towards the structure, morphology and composition of the material. The product prepared was characterised using various techniques. The photoresponse for the samples were also studied. The photoelectrochemical (PEC) cell configuration was p-SnSe | (0.01 M K4Fe(CN)6¾0.01 M K3Fe(CN)6.3H2O¾0.1 M Na2SO4| Pt).
Optical Response Of Poly (1,4-Phenylene-1,2-Di (P-Phenoxyphenyl) Vinylene) Towards Oxygen Gas, Mehamod F.S, Daik R, Ahmad M
Optical Response Of Poly (1,4-Phenylene-1,2-Di (P-Phenoxyphenyl) Vinylene) Towards Oxygen Gas, Mehamod F.S, Daik R, Ahmad M
ASEAN Journal on Science and Technology for Development
This research involved the synthesis of poly (1,4-phenylene-1,2-di (p-phenoxyphenyl) vinylene), dpop-PDV from di (p-phenoxybenzoyl) benzene compound as the monomer. The potential of the produced polymer as sensing reagent for O2 detection based on fluorescence quenching was studied. Di (p-phenoxybenzoyl) benzene was synthesised via the Friedel-Crafts benzoylationwith terephthaloydichloride and biphenylether as starting materials and anhydrous AlCl3 as the catalyst, while the dpop-PDV was synthesized via the McMurry coupling reaction. The polymerization was carried out in THF with TiCl4 and Zn as the catalyst and reducing agent respectively. Characterization on monomer and polymer had been carried out by using FTIR, GCMS, DSC, …
Increasing Serum Cholesterol Level Among Sri Lankan Adult Obese Patients Admitted To Medical Wards: A Cross-Sectional Study, Dioso R. (Ii) P., Shalina K., Judenimal K.
Increasing Serum Cholesterol Level Among Sri Lankan Adult Obese Patients Admitted To Medical Wards: A Cross-Sectional Study, Dioso R. (Ii) P., Shalina K., Judenimal K.
ASEAN Journal on Science and Technology for Development
This research identifid the factors affcting the widespread of the level of serum cholestrol among adult obese patients admitted to government hospitals in the easternpart of Sri Lanka, and identifie the number of adults obese patients with increasing serum cholesterollevel. A descriptive cross-sectional studydesign was used. Convenience sampling technique helped select 150 patients in medical wards and clinics of two government hospitals in the easternprovince of Sri Lanka, and Questionnaireswere distributedfor data analysis. Overall findingsof 150 obese patients regarding increasing serum cholestrol level admitted in the medical wards and follow-up at medical clinics had 59% in moderate risk, 36% with …
Prevalence Of Diarrhoeal Diseases Among Children Under Five Years In East African Countries From 2012–2017, Elmi O. E., Dioso R. (Ii) P.
Prevalence Of Diarrhoeal Diseases Among Children Under Five Years In East African Countries From 2012–2017, Elmi O. E., Dioso R. (Ii) P.
ASEAN Journal on Science and Technology for Development
This meta-analysis analyzed the prevalence of diarrheoal diseases among children less than fiveyears in three selected Eas African countries from 2012–2017. Search engines used Google Scholar, Proquest,and PubMed. Primarily, 300 studes were selected; hence 297 were eliminated using inclusion and exclusion criteria. The PICO (population, intervention, comparison, and outcome) guide helped in the analysis of the three selected stdies. The prevalence of diarrhoea among children less than fiveyears in the three selected EastAfrican countries from 2012 to 2017, averaged to 27% range from a minimum of 11% to a maximum of 54% of the 5478 total respondents (OR 2.07). The …
Hydrocarbons As Refrigerants―A Review, Koh J. H., Zakaria Z.
Hydrocarbons As Refrigerants―A Review, Koh J. H., Zakaria Z.
ASEAN Journal on Science and Technology for Development
Refrigerants used in air conditioning and refrigeration (AC&R) indusries have come full circle since the beginning of the industrialrevolution. With concern on issues relating to the environment such as the global warming and climate change issues, we should finda better alternative than to continue using these refrigerants that cause global warming and ozone depletion. AC&R industryplayers have blended in by introducing some new equipment and components that are specificallydesigned for hydrocarbon (HC) use. Mostnew refrigerators sold in Malaysia are already equipped with isobutane [a hydrocarbon designated as R-600a by the American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE) standards]as …
Nursing Care For A Patient With Nstemi Admitted To The Coronary Care Unit For Percutaneous Coronary Intervention — A Case Study, Siti Maryati M. S., Dioso R. (Ii) P.
Nursing Care For A Patient With Nstemi Admitted To The Coronary Care Unit For Percutaneous Coronary Intervention — A Case Study, Siti Maryati M. S., Dioso R. (Ii) P.
ASEAN Journal on Science and Technology for Development
This case studyaims to demonstrateclinical nursing skills to a patient with myocardial infarction admitted for percutaneous coronary intervention. Nursing care for this patient startedwith a physical assessment and laboratory invesigation analysis. This evaluation was necessary to develop a nursing care plan. The activities in the ward enumerated the medications provided, and the details of the vital signs monitored hourly. The patient was sent to cardiac catheter laboratory at 1030H. From the cardiac catheter laboratory post-percutaneouscoronary intervention to the mid-right coronary artery (1 Drug-Eluting Stent) he was transferred out to Telemetry unit on 11 August2016 at 1500H with Terumo band hemostatic …
Evaluation Of Cooking Oil As Processing Addtive For Natural Rubber, Syamin Y. M., Azemi S., Dzaraini K.
Evaluation Of Cooking Oil As Processing Addtive For Natural Rubber, Syamin Y. M., Azemi S., Dzaraini K.
ASEAN Journal on Science and Technology for Development
It was reported recently that high amount of aromatic ring or number of polycyclic aromatic hydrocarbon compounds found in aromatic oil are carcinogenic. This paper discusses the work to evaluate the Malaysian cooking oil as an alternative option to be used as process oil since cooking oil is safe to use and non-toxic. The performance of cooking oil is compared againstaromatic and paraffinioils. The results showed that rubber compounds containing cooking oil produced almostsimilar cure characteristicsas those produced by aromatic and paraffinioils indicating that it did not interfere with the vulcanization reaction. The physical properties of the vulcanizates containing cooking …
Decision Making Processes For A Patient With Cardiac Pacemaker Admitted To The Accident And Emergency Undergoing Magnetic Resonance Imaging – A Case Study, Raditya F. P.
ASEAN Journal on Science and Technology for Development
This case study aims to apply the processes of decision-making for magnetic resonance imaging (MRI) as a diagnostic examination for a patient with cardiac pacemaker admitted to a private hospital in the capital of Indonesia. It also aims to examine and evaluate the case of a 53-year-old mother who had a heart abnormality that has a pacemaker for one year and was diagnosed to do an MRI examination because of a suspected tumor on the wrist area.The three basic models of decision-making — the descriptive, prescriptive and normative — were applied. The prescriptive used the information processing theory, while the …
Editorial Board, Ajstd Editorialboard
Editorial Board, Ajstd Editorialboard
ASEAN Journal on Science and Technology for Development
No abstract provided.
Decision Making Processes For A Pregnant Woman Admitted To The Accident And Emergency Department Requiring Emergency Diagnostic X-Ray – A Case Study, Ismanto S.
ASEAN Journal on Science and Technology for Development
The objective of this study is to apply the decision-making processes for a pregnant woman who was involved in a motor vehicle accident and admitted to a private middle-class hospital in the capital of Indonesia requiring radiologic X-ray examination. It also aims to examine and evaluate the patient who was in her 20th week of gestation in order to provide her with the best emergency care, diagnostic investigations and treatments.The descriptive, normative and prescriptive models of decision-making are demonstrated. The descriptive model used intuition, while the normative model used decision trees as decision options and lastly the prescriptive decision used …
Phase Manifestation And Formation Of Nanoemulsions Composed Of Imidazolium-Based Ionic Liquid, Tween 80/Span 80 And Labrafac Lipophile Wl 1349, Ng S. H., Woi P. M., Eng C. C.
Phase Manifestation And Formation Of Nanoemulsions Composed Of Imidazolium-Based Ionic Liquid, Tween 80/Span 80 And Labrafac Lipophile Wl 1349, Ng S. H., Woi P. M., Eng C. C.
ASEAN Journal on Science and Technology for Development
onic liquids (ILs) can enhance topical and transdermal delivery, as well as increase the solubility of sparingly soluble drugs. In the present work, pseudo-ternary phase diagrams of emulsions were composed of a mixture of non-ionic surfactants, polyoxyethylene sorbitan monooleate (Tween 80®) and sorbitan monooleate (Span 80®) in weight fraction: 1:1, 1:2, 2:1 and 2:3, LabrafacTM Lipophile WL 1349 as an oil phase and 1-hexyl-3-methylimidazolium chloride [(HMIM) (Cl)] as a continuous phase. Emulsion formulations were selected with 10% surfactants from the pseudo-ternary phase diagrams and further prepared at 298.2 ± 0.1 K. Acoustic emulsificationmethod was used to prepare nanoemulsions that were …
Utilization Of Waste From Natural Rubber Glove Manufacturing Line, Devaraj V., Nur F. I., Dayang A. I. H., Nor H. K., Zairossani M. N.
Utilization Of Waste From Natural Rubber Glove Manufacturing Line, Devaraj V., Nur F. I., Dayang A. I. H., Nor H. K., Zairossani M. N.
ASEAN Journal on Science and Technology for Development
Malaysia is the largest producer and exporter of examination and surgical gloves in the world and currently faced with mitigating large amounts of waste generated during the glove production process. This waste is mainly generated from glove dipping tanks and is referred as dipping tank coagulum (DTC). It is considered as scheduled waste which requires mandatory disposal by incineration, in compliance to the Scheduled Waste Regulations set by the Department of Environment. Work described in this study showed, DTC samples with a polymer content of >40%, both ash and calcium carbonate content of <10% and curatives <2% (Sulphur, antioxidants, accelerators and ZnO) when blended with virgin rubbers (SMR 10 and SMR 20) were found to be suitable for manufacturing value-added rubber products. DTC samples with polymer contents of <40% and lower in curativescould still be considered for recycling, by adding higher portions of virgin rubber for manufacturing products like shoe soles, carpet underlay and thermoplastic elastomer products. Glove manufactures should ideally set up on-site DTC processing facilities at their factory premises equipped with crepers as well as space to ‘air dry’ the creped DTC samples. Creped samples could be sent to the Malaysian Rubber Board (MRB) for chemical analyses. Factory owners could also present the analytical results from MRB to the recyclers to obtain a good premium for their processed DTC samples to be used as raw materials.
A Phenomenological Study On The Quality Of Life Among Patients With Osteoarthritis Admitted For Rehabilitative Physiotherapy In A Private Hospital In Kuala Lumpur, Dioso R. (Iii) P., Tanggaya R.
A Phenomenological Study On The Quality Of Life Among Patients With Osteoarthritis Admitted For Rehabilitative Physiotherapy In A Private Hospital In Kuala Lumpur, Dioso R. (Iii) P., Tanggaya R.
ASEAN Journal on Science and Technology for Development
The aim of this study is to explore patients’ experiences and how their rehabilitation and physiotherapy at a private hospital in Kuala Lumpur, Malaysia has affected their quality of life (QOL) due to osteoarthritis (OA). In addition, this study also aims to explore patients’ perspectives of the rehabilitation and physiotherapy for their OA before and after which affects moreover their QOL. The seven domains of the QOL were the physiological, social, financial,environmental, psychological, level of independence and spiritual – aimed to guide the theme of the interview sessions. A qualitative design was used. Of the 50 patients purposively enrolled only …
Methanolysis Of Crude Jatropha Oil Using Heterogeneous Catalyst From The Seashells And Eggshells As Green Biodiesel, Reddy A. N. R., Ahmed A. S., Islam M. D., Hamdan S.
Methanolysis Of Crude Jatropha Oil Using Heterogeneous Catalyst From The Seashells And Eggshells As Green Biodiesel, Reddy A. N. R., Ahmed A. S., Islam M. D., Hamdan S.
ASEAN Journal on Science and Technology for Development
In this work, heterogeneous calcium oxide catalysts gleaned from Polymedosa expansa and eggshell were investigated for the transesterification of crude jatropha oil with methanol, to access their prospective performance in biodiesel production as an alternative green energy resource. The best yield of biodiesel achieved was 96% in 1 h for Step 1 using 0.01:1 ratio of acid catalyst to oil and 0.6:1 ratio of alcohol to oil ratio, together with 2 h of Step 2 using 0.02:1 ratio with base catalyst CaO, derived from P. expansa, to oil ratio and 5:1 ratio of alcohol to oil. The properties of jatropha …
Structures, Energies, And Bonding Analysis Of Monoaurated Complexes With N-Heterocyclic Carbene And Analogues, Nguyen T.A.N., Huynh T.P.L., Vo T.X.P., Tran T.H., Tran D.S., Dang T.H., Duong T.Q.
Structures, Energies, And Bonding Analysis Of Monoaurated Complexes With N-Heterocyclic Carbene And Analogues, Nguyen T.A.N., Huynh T.P.L., Vo T.X.P., Tran T.H., Tran D.S., Dang T.H., Duong T.Q.
ASEAN Journal on Science and Technology for Development
In this work, we computationally investigated from quantum chemical calculations (DFT) at the BP86 level with the various basis sets def2-SVP, def2-TZVPP, and TZ2P+, chemical bonding issues of the recently described carbene-analogues gold(I) complexes AuCl-NHEMe (Au1-NHE) with E = C – Pb. The optimized structures and the metal-ligand bond dissociation energy (BDE) were calculated, and the nature of the E→Au bond was studied with charge and energy decomposition methods. The equilibrium structures of the system showed that there were major differences in the bonded orientation from the ligands NHC-NHPb to gold(I) complex between the lighter and the heavier homologues. The …
Short Communication: Sulphur Levels And Fuel Quality In Peninsular Malaysia, Ramalingam M., Fuad A. Ahmad
Short Communication: Sulphur Levels And Fuel Quality In Peninsular Malaysia, Ramalingam M., Fuad A. Ahmad
ASEAN Journal on Science and Technology for Development
This paper presents the investigation on sulphur levels in fuels collected from different petrol stations in Peninsular Malaysia. Diesel and gasoline samples were analysed for sulphur using X-ray fluorescence spectrometry technique. In general, diesel concentrations of sulphur were only slightly lower than the Deprtment of Environment’s current sulphur limit of 500 p.p.m. across 2010–2014 (the range was 289–698 p.p.m., 374–410 p.p.m., 319–436 p.p.m., 447–605 p.p.m. and 300–477 p.p.m. for 2010, 2011, 2012, 2013 and 2014, respectively). Sulphur concentrations were relatively low in gasoline samples: the mean figures were 95, 77, 96, 74, 240 and 125 for 2009, 2010, 2011, 2012, …
Periphytic Diatoms In The Polluted Linggi (Sensu Stricto) And Kundor Rivers, Negeri Sembilan, Malaysia, Khan I.S.A. Nather
Periphytic Diatoms In The Polluted Linggi (Sensu Stricto) And Kundor Rivers, Negeri Sembilan, Malaysia, Khan I.S.A. Nather
ASEAN Journal on Science and Technology for Development
The investigation in this paper aimed to describe periphytic diatom assemblage, species composition and distribution in tropical polluted Linggi (sensu stricto or s.s.) and Kundor rivers in Negeri Sembilan, Malaysia. Regardless of ecological and environmental conditions, diatoms were the numerically dominant flora among periphytic algae collected monthly over a period of 13 months at nine stations in the Linggi (s.s.) and Kundor rivers. The freshwater periphytic diatom samples were collected mainly using artificial substrates and supplemented with natural substrates. The periphytic diatoms thus collected from both natural and artificial substrates comprised 86 taxa (82 pennate and 4 centric forms) belonging …
Decision-Making Processes For A Do-Not-Resuscitate Poisoned Pediatric Patient Admitted To The Department Of Emergency And Medical Services — A Case Study, Dioso R. (Iii) P.
Decision-Making Processes For A Do-Not-Resuscitate Poisoned Pediatric Patient Admitted To The Department Of Emergency And Medical Services — A Case Study, Dioso R. (Iii) P.
ASEAN Journal on Science and Technology for Development
A team of healthcare professionals in the Department of Emergency and Medical Services demonstrated decision-making processes for a poisoned pediatric patient with a Do-not-resuscitate (DNR) order. At the same time, clinical guidelines for poison resuscitations were critically applied. Lastly, the case examined and evaluated emergency care, management, treatment and diagnostic laboratory tests for pediatric poisoned patients. Ideas on pertinent literatures of decision-making models, clinical guidelines on poison resuscitation and DNR policies were already known by the majority. In addition, ideas on the benefits such as becoming enlightened on how to make sound judgments in an emergency situation, particularly addressing issues …