Utilization of an Artificial Neural Network in the Prediction of Heart Disease

Mohd Khalid Awang,Fadzilah Siraj 보안공학연구지원센터 2013 International Journal of Bio-Science and Bio-Techn Vol.5 No.4

Poster Session : PS 0063 ; Cardiology : Association of Framingham Risk Score with Serum Concentration of Urea and Creatinine

( Nazar Mohd Zabadi Mohd Azahar ),( Ambigga Krishnapillai ),( Adibah Hanum Sahari ),( Khalid Yusoff ) 대한내과학회 2014 대한내과학회 추계학술발표논문집 Vol.2014 No.1

Background: Individuals with chronic kidney disease experience higher mortality and adverse cardiovascular event rates. This study will describe the association between serum urea and creatinine level with different groups of Framingham Risk Score. Methods: Respondents who met the inclusion criteria and gave consent to participate will be recruited. This cross sectional study was conducted in Raub, Malaysia between July 2010 and June 2011. Blood pressure was measured twice and the average was recorded. Venous blood samples were taken for Fasting Serum Lipid, Fasting Blood Glucose and for the determination of urea and creatinine concentration. Results: There were 480 respondents recruited in this study with 42.5% of respondents were males (mean age±SD, 59±10.2 years). Urea concentration was found significantly higher in males (4.8±1.84 mmol/L) compared to females (4.2±1.77 mmol/L) (p<0.001). Creatinine concentration was found signifi cantly higher in males (88±31.45 mmol/L) compared to females (63.6±22.38 mmol/L) (p<0.001). Bivariate correlations found that age was significantly correlated with urea (r= 0.255, p<0.001) and creatinine (r=0.233, p<0.001) of the respondents. One way between groups analysis revealed that mean concentration of urea was signifi cantly highest in the high risk group, followed by moderate and low risk group of the Framingham Risk Score (F(2,438)=13.622, p<0.001). Creatinine concentration also was found signifi cantly highest in the high risk group followed by moderate and low risk group (F(2,438)=38.348, p<0.001). Conclusions: Serum urea and creatinine level were signifi cantly highest among the high risk for CVD group. Increasing public health awareness and aggressive lifestyle modifi cation programmes are essential in combating this serious health problem.

Catalytic pyrolysis of waste oil into hydrocarbon fuel utilizing cerium oxide catalyst

Mohamad Arsyad Abdul Khalid,Nurhayati Abdullah,Mohamad Nasir Mohamad Ibrahim,Rahmad Mohd Taib,Salmiah Jamal Mat Rosid,Nurasmat Mohd Shukri,NoorFatimah Yahaya,Wan Nazwanie Binti Wan Abdullah 한국화학공학회 2022 Korean Journal of Chemical Engineering Vol.39 No.6

The depletion of fossil fuels has prompted research into alternative fuels made from regeneration of wastematerials. Pyrolysis is a method of converting waste oil into valuable products, such as char, gas, and fuel. This studypresents the catalytic pyrolysis of waste oil for producing fuel utilizing cerium oxide, CeO2/Al2O3 and zinc oxide, ZnO/Al2O3 catalyst. The catalyst and oil were characterized using several characterization techniques to find the physicochemicalproperties of the catalyst and oil. The optimum condition for catalytic pyrolysis was a reaction temperature at500 oC, with the heating rate at 10 oC/min, utilizing CeO2/Al2O3 catalyst calcined at 700 oC. The catalytic pyrolysis successfullyconverted the waste oil into fuel and the oil product obtained was 93.01 wt% with a high calorific value(54.2MJ/kg). The pyrolysis oil is comprised of aliphatic hydrocarbon (C5-C15 hydrocarbon) that is within the hydrocarbonrange for gasoline and diesel. The oil product was also detected to have a low content of oxygen (3.07 wt%) andsulfur (0.60wt%), indicating its potential to serve as a cleaner, fuel reducing the sulfur dioxide, SOX formation. Theresults reveal that pyrolysis reactors have the ability to convert waste oil into hydrocarbon fuel.

Average Analysis Method in Selecting Haralick’s Texture Features on Color Co-occurrence Matrix for Texture Based Image Retrieval

Abd Rasid Mamat,Mohd Khalid Awang,Norkhairani Abdul Rawi,Mohd. Isa Awang,Mohd Fadzil Abdul Kadir 보안공학연구지원센터 2016 International Journal of Multimedia and Ubiquitous Vol.11 No.2

Many textures based image retrieval researchers use global texture features for representing and retrieval of images from an image database. However, this leads to misrepresentation of local information leading to the inefficient image retrieval performance. This paper presents an approach to overcome the problem. The approach focuses on extracting local Haralick’s texture feature based on a predetermined region using the color co-occurrence matrix method, the selection of the ‘significant’ Haralik’s texture features and evaluation of the performance of the combination of the ‘significant’ features. The proposed method which is an Average Analysis and a well known method, Principal Component Analysis were applied to obtain ‘significant’ features. In order to compare the performance, a series of experiments were carried out for both methods, which is the proposed Average Analysis and the Principal Component Analysis. Experiments were performed on a 1000 selected images from the Coral image database which were divided into ten categories. Based on the experimental results, it is interesting to note that for the combination ‘significant’ features obtained from the proposed Average Analysis showed better retrieval performance compared to the Principal Component Analysis for almost all categories. This finding has an important implication in deciding the correct combination of ‘significant’ features for certain image properties. It has shown that the proposed method is able to produce less computational processing time due to a reduced amount of processing involved. The result is also compared to the previous researches and has shown an increase of an average precision from 8.5% to 26%.

Cytotoxic Constituents from Boesenbergia pandurata (Roxb.) Schltr

Mohd Aspollah Sukari,Amy Yap Li Ching,Gwendoline Ee Cheng Lian,Mawardi Rahmani,Kaida Khalid 한국생약학회 2007 Natural Product Sciences Vol.13 No.2

flavonoid derivatives, pinostrobin (1), pinocembrin (2), alpinetin (3), cardamonin (4) andboesenbergin A (5) were isolated from the rhizomes of Boesenbergia pandurata. All compounds were elucidatedbased on its spectroscopic data and by the comparison with the previous works. 2D NMR technique was used forthe structure elucidation of boesenbergin A to complement the data reported previously. The extracts and purecompounds were screened for cytotoxic activity against HL-60 cancer cell lines (human promyelocytic leukemia).Cytotoxic screening showed most of the extracts and pure compounds isolated from the rhizomes of Boesenbergiapandurata were active against HL-60 cancer cell line. The chloroform extract and boesenbergin A showed themost potent cytotoxic activity. KeywordsBoesenbergia rotunda, Kaempferia pandurata, Zingiberaceae, Flavonoids, Cytotoxic

Evaluation on feedstock, technologies, catalyst and reactor for sustainable biodiesel production: A review

Mohd Nurfirdaus Bin Mohiddin,Yie Hua Tan,Yee Xuan Seow,Jibrail Kansedo,N.M. Mubarak,Mohammad Omar Abdullah,Yen San Chan,Mohammad Khalid 한국공업화학회 2021 Journal of Industrial and Engineering Chemistry Vol.98 No.-

The ever-detrimental condition of the environment due to the fossil fuel utilization has catalyzed thedevelopment of biodiesel. Biodiesel is produced mainly via transesterification and the entire processcomprises of several major components; the feedstock, the catalyst, the reaction, and the productseparation or purification. There are various factors affecting the amount and quality of biodieselproduced, such as the type and amount of feedstock and catalyst, alcohol-to-feedstock ratio, and reactiontemperature and time. The performance of biodiesel reactors in providing energy and time efficientbiodiesel production is also among the subject of recent studies. To produce biodiesel commercially andefficiently, it is important to recognize the novel technologies that are promising for biodiesel production. With this in mind, this article presents a review of the recent advancement and classification of thefeedstock, the catalyst for biodiesel production, and the biodiesel production reactor. Furthermore, thisarticle also highlights the development and application of oil extraction techniques, biochar as a biodieselcatalyst, and the magnetic biodiesel catalyst. The biodiesel production reactor and parametersoptimization are also discussed in this article in order to provide a better context on the chemicalreaction.

Comparison of Magnetic Resonance Imaging Findings between Pathologically Proven Cases of Atypical Tubercular Spine and Tumour Metastasis: A Retrospective Study in 40 Patients

Somit Mittal,Mohd Khalid,Aamir Bin Sabir,Saifullah Khalid 대한척추외과학회 2016 Asian Spine Journal Vol.10 No.4

Study Design: Retrospective study. Purpose: To note the magnetic resonance imaging (MRI) differences between pathologically proven cases of atypical spinal tuberculosis and spinal metastasis in 40 cases. Overview of Literature: Spinal tuberculosis, or Pott’s spine, constitutes less than 1% of all cases of tuberculosis and can be associated with a neurologic deficit. Breast, prostate and lung cancer are responsible for more than 80% of metastatic bone disease cases, and spine is the most common site of bone metastasis. Thus, early diagnosis and prompt management of these pathologies are essential in preventing various complications. Methods: We retrospectively reviewed 40 cases of atypical tuberculosis and metastasis affecting the spine from the year 2012 to 2014, with 20 cases each that were proven by histopathological examination. MR imaging was performed on 1.5 T MR-Scanner (Magnetom Avanto, Siemens) utilizing standard surface coils of spine with contrast injection. Chi-square test was used for determining the statistical significance and p -values were calculated. Results: The most common site of involvement was the thoracic spine, seen in 85% cases of metastasis and 65% cases of Pott’s spine (p =0.144). The mean age of patients with tubercular spine was found to be 40 years and that of metastatic spine was 56 years. The following MR imaging findings showed statistical significance (p <0.05): combined vertebral body and posterior elements involvement, skip lesions, solitary lesion, intra-spinal lesions, concentric collapse, abscess formation and syrinx formation. Conclusions: Tuberculosis should be considered in the differential diagnosis of various spinal lesions including metastasis, fungal spondylodiskitis, sarcoidosis and lymphoma, particularly in endemic countries. Spinal tuberculosis is considered one of the great mimickers of disease as it could present in a variety of typical and atypical patterns, so proper imaging must be performed in order to facilitate appropriate treatment.

Improvement of mechanical properties of bio-concrete using Enterococcus faecalis and Bacillus cereus

Abdullah Faisal Alshalif,Mohd Irwan Juki,Norzila Othman,Adel Ali Al-Gheethi,Faisal Sheikh Khalid 대한환경공학회 2019 Environmental Engineering Research Vol.24 No.4

The present study aimed to investigate the potential of Enterococcus faecalis (E. faecalis) and Bacillus cereus (B. cereus) in improving the properties of bio-concrete. E. faecalis and B. cereus strains were obtained from fresh urine and an acid mire water at cell concentration of 1.16×1012 and 1.3×1012 cells mL-1, respectively. The bacterial strains were inoculated in a liquid medium into the concrete with 1, 3 and 5% as replacement of water cement ratio (w/c). The ability of E. faecalis and B. cereus cells to accumulate the calcite and the decrement of pores size within bio-concrete was confirmed by SEM and EDX analysis. The results revealed that E. faecalis exhibited high efficiency for increasing of compressive and splitting tensile strength than B. cereus (23 vs. 14.2%, and 13 vs. 8.5%, respectively). These findings indicated that E. faecalis is more applicable in the bio-concrete due to its ability to enhance strength development and reduce water penetration.

Numerical Simulation of Generalized Power Law Model Blood Flow and Mass Transfer in Multiple Stenoses Artery

Kannigah Thirunananasambantaha,Sumayyah Mohd Khalid,Norliza Mohd Zain,Zuhaila Ismail,Lim Yeou Jiann 한국전산유체공학회 2022 한국전산유체공학회 학술대회논문집 Vol.2022 No.10

Behavior and modeling of RC beams strengthened with NSM-steel technique

Md. Akter Hosen,Khalid Ahmed Al Kaaf,A.B.M. Saiful Islam,Mohd Zamin Jumaat,Zaheer Abbas Kazmi 국제구조공학회 2023 Structural Engineering and Mechanics, An Int'l Jou Vol.88 No.1

The reinforced concrete (RC) structures might need strengthening or upgradation due to adverse environmental conditions, design defects, modification requirements, and to prolong the expected lifespan. The RC beams have been efficiently strengthened using the near surface mounted (NSM) approach over the externally bonded reinforcing (EBR) system. In this study, the performance of RC beam elements strengthened with NSM-steel rebars was investigated using an experimental program and nonlinear finite element modeling (FEM). Nine medium-sized, rectangular cross-section RC beams total in number made up for the experimental evaluation. The beams strengthened with varying percentages of NSM reinforcement, and the number of grooves was assessed in four-point bending experiments up to failure. Based on the experimental evaluation, the load-displacement response, crack features, and failure modes of the strengthened beams were recorded and considered. According to the experimental findings, NSM steel greatly improved the flexural strength (up to about 84%) and stiffness of RC beams. The flexural response of the tested beams was simulated using a 3D non-linear finite element (FE) model. The findings of the experiments and the numerical analysis showed good agreement. The effect of the NSM groove and reinforcement on the structural response was then assessed parametrically.