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Search Results: 1 - 10 of 176 matches for " ShahNor BASRI "
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Heat Distribution in Rectangular Fins Using Efficient Finite Element and Differential Quadrature Methods  [PDF]
Engineering (ENG) , 2009, DOI: 10.4236/eng.2009.13018
Abstract: Finite element method (FEM) and differential quadrature method (DQM) are among important numerical techniques used in engineering analyses. Usually elements are sub-divided uniformly in FEM (conventional FEM, CFEM) to obtain temperature distribution behavior in a fin or plate. Hence, extra computational complexity is needed to obtain a fair solution with required accuracy. In this paper, non-uniform sub-elements are considered for FEM (efficient FEM, EFEM) solution to reduce the computational complex-ity. Then this EFEM is applied for the solution of one-dimensional heat transfer problem in a rectangular thin fin. The obtained results are compared with CFEM and efficient DQM (EDQM), with non-uniform mesh generation). It is found that the EFEM exhibit more accurate results than CFEM and EDQM showing its potentiality.
Real-Time Gas Identification by Analyzing the Transient Response of Capillary-Attached Conductive Gas Sensor
Behzad Bahraminejad,Shahnor Basri,Maryam Isa,Zarida Hambli
Sensors , 2010, DOI: 10.3390/s100605359
Abstract: In this study, the ability of the Capillary-attached conductive gas sensor (CGS) in real-time gas identification was investigated. The structure of the prototype fabricated CGS is presented. Portions were selected from the beginning of the CGS transient response including the first 11 samples to the first 100 samples. Different feature extraction and classification methods were applied on the selected portions. Validation of methods was evaluated to study the ability of an early portion of the CGS transient response in target gas (TG) identification. Experimental results proved that applying extracted features from an early part of the CGS transient response along with a classifier can distinguish short-chain alcohols from each other perfectly. Decreasing time of exposition in the interaction between target gas and sensing element improved the reliability of the sensor. Classification rate was also improved and time of identification was decreased. Moreover, the results indicated the optimum interval of the early transient response of the CGS for selecting portions to achieve the best classification rates.
On some hyperbolic planes from finite projective planes
Basri Celik
International Journal of Mathematics and Mathematical Sciences , 2001, DOI: 10.1155/s0161171201006184
Abstract: Let Π=(P,L,I) be a finite projective plane of order n, and let Π′=(P′,L′,I′) be a subplane of Π with order m which is not a Baer subplane (i.e., n≥m2
Development of Rainfall-runoff Model Using Tank Model: Problems and Challenges in Province of Aceh, Indonesia
Hairul Basri
Aceh International Journal of Science and Technology , 2013,
Abstract: Rainfall-runoff model using tank model founded by Sugawara has been widely used in Asia. Many researchers use the tank model to predict water availability and flooding in a watershed. This paper describes the concept of rainfall-runoff model using tank model, discuss the problems and challenges in using of the model, especially in Province of Aceh, Indonesia and how to improve the outcome of simulation of tank model. Many factors affect the rainfall-runoff phenomena of a wide range of watershed include: soil types, land use types, rainfall, morphometry, geology and geomorphology, caused the tank model usefull only for concerning watershed. It is necessary to adjust some parameters of tank model for other watershed by recalibrating the parameters of the model. Rainfall runoff model using the tank model for a watershed scale is more reasonable focused on each sub-watershed by considering soil types, land use types and rainfall of the concerning watershed. Land use data can be enhanced by using landsat imagery or aerial photographs to support the validation the existing of land use type. Long term of observed discharges and rainfall data should be increased by set up the AWLR (Automatic Water Level Recorder) and rainfall stations for each of sub-watersheds. The reasonable tank model can be resulted not only by calibrating the parameters, but also by considering the observed and simulated infiltration for each soil and land use types of the concerning watershed
Rotation and H-alpha Emission Above and Below the Substellar Boundary
Gibor Basri
Physics , 2000,
Abstract: I present the results of a multiyear survey of very low mass stars and brown dwarfs, at high spectral resolution. The spectra were gathered with the HIRES echelle at the Keck Observatory. Some of these objects are stellar and others are substellar (or ambiguous). Early indications that such objects can be rapidly rotating but display little H-alpha emission turn out to be commonly true. This is the opposite of the relation between rotation and activity in solar-type stars. The H-alpha surface flux drops precipitously at the bottom of the main sequence, and seems to be related to the luminosity or temperature of the objects. There is a general trend to higher rotation velocities as one looks at objects of lower luminosity. I discuss several possible explanations for these results. The dynamos for these objects are probably fully turbulent, driven by convection, and thus more directly related to the object's luminosity. They may be quenched when the rotational velocities become too fast in comparison to the convective velocities (supersaturation). Another possibility is that the atmospheres of the cooler objects are becoming sufficiently neutral to decouple atmospheric motions from the field. Either of these could explain why young brown dwarfs can be magnetically active while older brown dwarfs are not. A final possibility is that instead of being quenched, the field configuration in rapid rotators changes to a less conducive form for dissipative heating. This could explain why flares are occasionally seen on generally inactive objects.
Phytoconstituent Screening and Antibacterial Activity of the Leaf Extracts from Canarium odontophyllum Miq.  [PDF]
Dayang Fredalina Basri, Nur Hafidzah Mohd Nor
American Journal of Plant Sciences (AJPS) , 2014, DOI: 10.4236/ajps.2014.519303
Abstract: Canarium odontophyllum is one of the underutilized fruits among the local community in Sarawak, Malaysia. The leaf extracts from C. odontophyllum (6.25 mg/ml to 50 mg/m) were screened against two Gram-positive bacteria (Staphylococcus aureus and Bacillus cereus) and two Gram-negative bacteria (Escherichia coli and Pseudomonas aeruginosa). Extraction of the C. odontophyllum leaves using methanol produced the highest yield (5.46%) followed by water (4.0%) and acetone (2.83%) whereas hexane extracted the lowest yield (0.98%). Out of the four bacterial species tested, only S. aureus was found to be susceptible towards the C. odontophyllum leaves extract. Screening result using agar well diffusion method showed that the antimicrobial activity of the acetone and methanol extracts from C. odontophyllum leaves was concentration-dependent towards the growth inhibition of S. aureus. The MIC values for both MeOH and acetone extracts were 0.391 mg/ml. The MBC value of MeOH extract was twice its MIC value whereas the MBC and MIC values of acetone extract against S. aureus were the same. Phytochemical analysis showed that acetone, MeOH
Implementation of Decision Support System for Scheduled Waste Management in Malaysia
Mohammad Shahnor Bani,Zulkifli Abdul Rashid,Ku Halim Ku Hamid
Journal of Applied Sciences , 2011,
Abstract: Malaysia is today a model of economical success, attaining growth rates in Southeast Asia today. The country continues to take big strides in its industrialization nation by the year 2020. An ever-expanding population and high rates of economic development in Malaysia resulted in the generation of vast amount of waste. Nevertheless, public has not yet realized that the industrial growth normally proportion with scheduled waste generation. Currently, there are legislative and policies regarding the waste management have been enforced and new technology has been introduced in this country. However, the efforts disable to completely solve the problem as the waste management is complicated and unique. This is due to mainly insufficient key parameters employed in the integrated system developed. This study introduces a model that could be applied or considered in the scheduled waste management. Most of waste planners or waste generators do not have enough resources needed to manage all relevant data, assist in waste management and to make optimization analysis leading to incomplete consideration and uncontrolled collection. In addition, the existing system tool cannot comprehend with the current generation of waste and waste management because only used as database and assessment viz. E-Consign and E-Swiss. Thus, the implement of DSS that encompass all aspect in waste management is prior needed under the present circumstances. The DSS model could be used in assisting decision makers and able to give robust prediction despite the inherent uncertainties of waste generation and the plethora of waste characteristics and gives optimal allocation of waste stream for recycling, incineration, landfill and composting of solid waste in an economic and environmentally sustainable way.
Augustine Sukarlan Basri
Makara Seri Sosial Humaniora , 2006,
Abstract: This study tried to identify the characteristics and factors of wisdom using three age groups: young adult, middle adult, and elderly. Forty three characteristics were established. Factor analysis and one-way analysis of variance were used and 5 factors were found: (1) Spiritual-Moral Condition; (2) Interpersonal Relationship Ability; (3) Judgment and Decision Making Ability; (4) Personal Condition; and (5) Exceptional/Specific Ability. Spiritual-Moral Condition was a unique factor that former researches did not mention this condition as a factor of wisdom. This condition was also judged as the prime contributor to describe wisdom. Using interview, this study also described the unique manifestations of the five factors of wisdom in the life of three elderly people judged as wise persons by the respondents. Keywords:
Jenis dan Kandungan Tanin Pakan Satwa Anoa (Bubalus sp.)
M. Basri,Rukmi
Media Peternakan , 2011,
Abstract: Study of kinds and tannin content of diets consumed by anoa is limited. This information is very important and necessary for anoa domestication. The aims of this research were to obtain information on kinds and tannin content of anoa diets. The research was conducted in forest of Pangi Binangga nature reserve and Lore Lindu National Park, province of Central Sulawesi in March to November 2009. Digestive content analyses method was used to study the kinds of diets consumed by anoa. Chromatography was used for tannin analysis. Results of the digestive content analysis found ten kinds of anoa diets, i.e. Ficus miquelly, Caryota mitis, Ficus ampelas, Syzigium sp., Cordia mixab, Paspalum conjugatum, Smilax leocophylla, Saccarum spontaneum, Isachne globosa and Imperata cylindrica. The proportion of the diets were 60%, 45%, 35%, 17%, 12%, 10%, 8%, 8%, 5%, and 4%, respectively. Three of six diets namely Ficus miquelly, Saccarum spontaneum and Isachne globosa contained low tannin. The tannin content of three diets was 0.34%, 0.61%, and 0.99%, respectively. It is concluded that anoa in forest prefer diets that contain low tannin, such as Ficus fruits, shoots of shrubs.
The potential of aqueous and acetone extracts of galls of Quercus infectoria as antibacterial agents
Basri Dayang,Fan S
Indian Journal of Pharmacology , 2005,
Abstract: OBJECTIVE: To evaluate the antibacterial potential of aqueous and acetone extracts of galls of Quercus infectoria by determination of Minimum Inhibitory Concentration (MIC) and Minimum Bactericidal Concentration (MBC) values. MATERIALS AND METHODS: The extracts from the galls of Q. infectoria at 10 mg/ml were screened against three Gram-positive bacteria (Staphylococcus aureus ATCC 25923, Staphylococcus epidermidis and Bacillus subtilis) and three Gram-negative bacteria (Escherichia coli NCTC 12079 serotype O157:H7, Salmonella typhimurium NCTC 74 and Pseudomonas aeruginosa ATCC 27853). The MIC of the extracts were then determined using the twofold serial microdilution technique at a concentration ranging from 5 mg/ml to 0.0024 mg/ml. The MBC values were finally obtained from the MIC microtiter wells which showed no turbidity after 24 hrs of incubation by subculturing method. RESULTS: Out of the six bacterial species tested, S. aureus was the most susceptible. On the other hand, the extracts showed weak inhibitory effect against S. epidermidis, B. subtilis, S. typhimurium and P. aeruginosa while there was no inhibition zone observed for E. coli O157. The MIC values of the extracts ranged from 0.0781 mg/ml to 1.25 mg/ml whereas the MBC values ranged from 0.3125 mg/ml to 2.50 mg/ml. The MBC values of aqueous extract against S. aureus and S. typhimurium were higher than their MIC values. The MBC value of acetone extract against S. aureus was also higher than its MIC value. Interestingly, however, the MIC and MBC values of acetone extract against S. typhimurium were the same (1.25 mg/ml). CONCLUSION: The aqueous and acetone extracts displayed similarities in their antimicrobial activity on the bacterial species and as such, the galls of Quercus infectoria are potentially good source of antimicrobial agents.
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