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266 articles for “M. Abdullah”
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Research ArticleOpen accessIn the author namesFlowering and Fruit Set Under Malaysian Climate of Jatropha curcas L.Noor Camellia Noor Alam, Thohirah Lee Abdullah, Nur Ashikin Psyquay AbdullahProblem statement: In recent years Jatropha curcas has drawn the world’s attention as it has the potential to replace fossil fuel as biodiesel. However, the biggest setback in Jatropha cultivation in Malaysia is the low percentage of fruit set and the high ratio of male to female flowers. In order to further understand the flowering and fruit characteristics of Jatropha, … …American Journal of Agricultural and Biological Sciences, Vol. 6, Issue 1 · 10 Mar 2011 · 9,836 accessesView PDFCite
Research ArticleOpen accessIn the author namesA Review: Mesoporous Santa Barbara Amorphous-15, Types, Synthesis and Its Applications towards Biorefinery ProductionNorhasyimi Rahmat, Ahmad Zuhairi Abdullah, Abdullah Rahman MohamedProblem statement: Santa Barbara Amorphous (SBA-15) is significant mesoporous silica with exclusive and important properties of highly ordered mesopores, hydrothermally stable and thick wall, profusely large surface area and huge pore volume which render it as promising catalyst for wide applications. However, the purely siliceous SBA-15 which lacks of acidity characteristic hinders its ideal capabilities as catalyst. Moreover, functionalization and … …American Journal of Applied Sciences, Vol. 7, Issue 12 · 31 Dec 2010 · 14,985 accessesView PDFCite
Research ArticleOpen accessIn the author namesNucleotide Sequence of the Coat Protein Gene of the Malaysian Passiflora Virus and its 3' Non-Coding RegionNorzihan Abdullah, Ismanizan Ismail, Vilasini Pillai et al.Problem statement: In this study, we identified the full length Coat Protein (CP) gene of the Malaysian Passiflora Virus (MPV) and its 3' non-coding region. The CP gene of the MPV contained 285 amino acid residues. Approach: Pairwise comparison of the MPV CP region with four other potyviruses, namely East Asian Passiflora Virus (EAPV), Passionfruit Woodiness Virus (PWV), Bean Common … …American Journal of Applied Sciences, Vol. 6, Issue 9 · 30 Sep 2009 · 7,725 accessesView PDFCite
Research ArticleOpen accessIn the author namesDetermination of the Presence of Huanglongbing in Seeds and Movement of the Pathogen in Citrus reticulataHajivand Shokrollah, Thohirah Lee Abdullah, Kamaruzaman Sijam, Siti Nor Akmar AbdullahProblem statement: Huanglongbing (HLB) also known as citrus greening disease is a fastidious phloem-inhabiting bacterium in the genus Candidatus Liberibacter. Using universal primers, the 16S ribosomal DNA sequence of three strains of the bacterium were obtained by PCR. However there is very little information on seed transmission and HLB pathogen movement to find a way for control or reduce the … …American Journal of Applied Sciences, Vol. 6, Issue 6 · 30 Jun 2009 · 8,092 accessesView PDFCite
Research ArticleOpen accessIn the author namesThermal-Mechanical Analysis of a Different Leadframe Thickness of Semiconductor Package under the Reflow ProcessS. Abdullah, M. F. Abdullah, A. K. Ariffin, A. JalarThe copper-based leadframe is practically proven effective in the thermal and reliability of a Quad Flat No Lead (QFN) three dimension (3D) stacked-die semiconductor package. Reducing the copper thickness is understood to present various thermal and reliability failure mode and mechanisms, such as die cracking and delamination. However, no in-depth study has been pursued in order to determine the capability … …American Journal of Applied Sciences, Vol. 6, Issue 4 · 30 Apr 2009 · 7,719 accessesView PDFCite
Research ArticleOpen accessIn the author namesTEC and Scintillation Study of Equatorial Ionosphere: A Month Campaign over Sipitang and Parit Raja Stations, MalaysiaM. Abdullah, A. F.M. Zain, Y. H. Ho, S. AbdullahProblem Statement: Ionospheric scintillations, which cause significant effects on satellite signals for communication and navigation, often takes place in equatorial region such as Malaysia. However, this disturbance are not fully understand due to few studies performed. This research reports the study and monitoring activity on Total Electron Content (TEC) and ionospheric scintillation in Malaysia using GPS measurements. Approach: One dual-frequency … …American Journal of Engineering and Applied Sciences, Vol. 2, Issue 1 · 31 Mar 2009 · 9,506 accessesView PDFCite
Research ArticleOpen accessIn the author namesEffect of Manufacturing Stresses to Die Attach Film Performance In Quad Flatpack No-Lead Stacked Die PackagesM. F. Rosle, I. Abdullah, S. Abdullah et al.Problem statement: Repeated heat cure during assembly processes affected the Die Attach Film (DAF) material properties and the effectiveness touched area that leads to weak die bonding and delamination. Suitable die attached condition and DAF material selection had been evaluated to achieve required reliability performance in the manufacturing of the 3D Quad Flat No-Lead (QFN) stacked die package. Approach: During … …American Journal of Engineering and Applied Sciences, Vol. 2, Issue 1 · 31 Mar 2009 · 8,054 accessesView PDFCite
Research ArticleOpen accessIn the author namesRBFNN Model for Predicting Nonlinear Response of Uniformly Loaded Paddle CantileverAbdullah H. AbdullahThe Radial basis Function neural network (RBFNN) model has been developed for the prediction of nonlinear response for paddle Cantilever with built-in edges and different sizes, thickness and uniform loads. Learning data was performed by using a nonlinear finite element program, incremental stages of the nonlinear finite element analysis were generated by using 25 schemes of built paddle Cantilevers with … …American Journal of Applied Sciences, Vol. 6, Issue 1 · 31 Jan 2009 · 7,645 accessesView PDFCite
Research ArticleOpen accessIn the author namesSoft Marking Scheme of SVM Hierarchical Classifiers for Attack ClassificationAzizi Abdullah, Warhamni Jani@MokhtarClassification is a predictive modelling problem that involves assigning a class label to an instance correctly. There exist several strategies in machine learning to deal with the multi-class classification problems for attack detection. One of the popular strategies is the one-vs-one that decomposes the multi-class problem into multiple binary ones. The approach has been applied in many popular supervised learning … …Journal of Computer Science, Vol. 17, Issue 9 · 27 Sep 2021 · 6,006 accessesView PDFCite
Research ArticleOpen accessIn the author namesSentimental Analysis on Health-Related Information with Improving Model Performance using Machine LearningWael M.S. Yafooz, Abdullah AlsaeediSocial media platforms are extensively used in exchanging and sharing information and user experience, thereby resulting in massive outspread and viewing of personal experiences in many fields of life. Thus, informative health-related videos on YouTube are highly perceptible. Many users tend to procure medical treatments and health-related information from social media particularly from YouTube when searching for chronic illness treatments. … …Journal of Computer Science, Vol. 17, Issue 2 · 22 Feb 2021 · 7,466 accessesView PDFCite