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Search Results: 1 - 10 of 1518 matches for " Tahir Aris "
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Health Facilities Affected by Flood Simulation to a District in Malaysia  [PDF]
Hazrin Hasim, Tahir Aris, Fadhli Yusof
Journal of Analytical Sciences, Methods and Instrumentation (JASMI) , 2014, DOI: 10.4236/jasmi.2014.44016
Abstract: Objective: The Ministry of Health Malaysia is developing a GIS database of health facilities in the country with the main aim to assist in the planning and development of the services, and in allocation of resources. Methodology: Apart from coordinates of the facilities, other digital information such as states and districts boundaries, main road networks and river were obtained from MacGDI, a centre responsible to manage geospatial data infrastructure in Malaysia. In assisting the Ministry of Health in its planning, one of the analyses that were conducted was a flood simulation analysis in a district in a coastal area of Peninsular Malaysia. This was done following a possibility that a tropical storm “Sonamu” would happen in that area. The objective was to identify health facilities that would be affected if a flood were to happen in the district and finally to assist the Ministry of Health in their emergency plan. Data on contour was obtain from a relevant government agency and was also mapped digitally. Results: The results were showing that with one metre depth of flood, more than half of the facilities would be affected and about two third of the facilities would be affected if the flood level rises to 2.5 metres. Conclusion: Application of GIS is very useful for the health sector in planning of facing an environmental related disaster.
Prevalence and risk factors of latent tuberculosis infection among health care workers in Malaysia
Shaharudin Rafiza, Krishna Rampal, Aris Tahir
BMC Infectious Diseases , 2011, DOI: 10.1186/1471-2334-11-19
Abstract: A cross sectional study was conducted at four randomly selected hospitals in the Klang Valley from December 2008 to May 2009. Self administered questionnaire was used to obtain information on health care workers and possible risk factors. The response rate for this study was 90.8% with 954 respondents completed the questionnaire and were tested with Quantiferon TB Gold in tube for latent tuberculosis infection. Agreement between Quantiferon TB Gold in tube and Tuberculin Skin Test was assessed among 95 health care workers who consented to undergo both tests.The overall prevalence of latent tuberculosis infection among health care workers was 10.6% (CI: 8.6%; 12.6%). Factors significantly associated with latent tuberculosis infection were aged 35 years and older [9.49 (CI: 2.22; 40.50)], history of living in the same house with close family members or friends who had active tuberculosis [8.69 (CI: 3.00; 25.18)], worked as a nurse [4.65 (CI: 1.10; 19.65)] and being male [3.70 (CI: 1.36; 10.02)]. Agreement between Quantiferon TB Gold in tube test and tuberculin skin test at cut-off points of 10 mm and 15 mm was 50.5% and 82.1% respectively. However, Kappa-agreement was poor for both cut-off points.The prevalence of latent tuberculosis infection in Malaysia was relatively low for an intermediate TB burden country. We could not comment on the occupational risk of latent tuberculosis infection among health care worker compared to the general population as there were no prevalence data available for latent tuberculosis infection in the general population. Kappa agreement between Quantiferon TB gold in-tube and tuberculin skin test was poor.Tuberculosis (TB) in the era of HIV/AIDs, is the second most frequent cause of death due to an infectious agent [1]. Similar to other developing countries, TB is still a public health problem in Malaysia despite preventive and control measures taken. The incidence rate in Malaysia has been stagnant at around 58.7 to 65.6 per 100,000 popu
Impact of Palm Oil versus Other Oils on Weight Changes: A Systematic Review  [PDF]
Nor Asiah Muhamad, Normi Mustapha, Mohd Farid Baharin, Mohd Hatta Abdul Mutalip, Murnilina Abdul Malek, Ruhaya Salleh, Nor Azian Mohd Zaki, Fatimah Othman, Tahir Tahir Aris, Shahnaz Murad
Food and Nutrition Sciences (FNS) , 2018, DOI: 10.4236/fns.2018.97068
Abstract: Objective: The present review aimed to determine the effect of palm oil versus other oils on changes in body weight or Body Mass Index (BMI). Design: A systematic review was conducted. Studies were identified by database searching (EMBASE, PUBMED, CENTRAL, SCOPUS, PROQUEST, Web of Science [ISI Web of Knowledge], Cumulative Index to Nursing and Allied Health Library (CINAHL Plus), LILAC and ClinicalTrials.gov. Searching, selecting and reporting were done according to the PRISMA (Preferred Reporting Items for Systematic reviews and Meta-Analyses) Statement. Setting: Palm oil vs other oils intervention study on weight or BMI changes. Subjects: Individuals participating in palm oil vs other oil intervention study. Results: A total of 182 studies were screened for eligibility, five studies were finally included. Three studies compared the effect of palm oil vs sunflower oil on weight changes and BMI. One study examined the effect of hybrid palm oil vs extra virgin olive oil on weight changes. The last study examined the effect of palm oil vs olive oil vs lard on weight changes. Out of 292 participants in five studies, only one study (Iggman, 2014) had a low risk of bias. In this study, there was no significant difference between the group that received sunflower oil and palm oil (SMD: 0.04, 95% CI: -0.59 to 0.66). Other four studies had unclear risk of bias. Conclusions: Based on the review, there is insufficient evidence to suggest the impact of palm oil intake on weight changes or BMI.
Association between Comorbidities and Selected Sociodemographic Factors with Complications of Diabetes: Results from the National Diabetic Registry Malaysia  [PDF]
Nor Asiah Muhamad, Mohd Hatta Abdul Mutalip, Normi Mustapha, Nor Soleha Mohd Dali, Tahir Aris, Fatanah Ismail, Shahnaz Murad, Lokman Hakim Sulaiman
Journal of Diabetes Mellitus (JDM) , 2018, DOI: 10.4236/jdm.2018.83009
Abstract: Background: This study aims to determine the hazard ratio of having any complication from diabetes mellitus, and the associations between comorbidities and risk of having any complications from diabetes mellitus among diabetic patients who have attended government primary care clinics. Methods: Secondary data were retrieved from the Malaysian National Diabetic Registry which included all patients who received care. The data from the study on the socio-demographic, diabetes complications, clinical and treatment characteristics were analyzed using descriptive statistics. Cox regression was performed to estimate the hazard ratio for comorbidities, tobacco use, duration of diabetes and socio-demography characteristics upon time to diabetic complications. Results: Adjusted for other covariates, increase number of comorbidities contributed the highest hazard ratio risk: 1 comorbid (aHR: 2.47, 95% CI: 2.39, 2.55), 2 comorbidities (aHR: 4.34, 95% CI: 4.22, 4.47), 3 comorbidities (aHR: 6.56, 95% CI: 6.31, 6.81) and 4 comorbidities (aHR: 9.13, 95% CI: 8.20, 10.17). Other factors: age > 40 years (8%) Malays (27%) and smokers (10%) have hazard risks to develop diabetic complications. Conclusions: Increase in number of
Imaging in nasopharyngeal carcinoma: the value of 18-Florine Fluorodeoxyglucose PET/CT in comparison to conventional imaging modalities CT and MRI
Abdul Jalil Nordin, Simona Secondino, Noraini Abdul Rahim, Paolo Pedrazzoli, Salvatore Siena, Claudio Rossetti, Tahir Aris
Radiology and Oncology , 2009, DOI: 10.2478/v10019-009-0026-8
Abstract: Background. The aim of the study was to evaluate the clinical usefulness of 18F Fluorodeoxyglucose (FDG) positron emission tomography / computed tomography (PET/CT) in the management of nasopharyngeal carcinoma (NPC) in comparison to conventional imaging modalities. Methods. This retrospective study was done at Ospedale Niguarda, Milan, Italy. Data were acquired from 24 NPC patients between May 2003 and December 2006. They had FDG PET/CT and CT or MRI during the initial diagnosis and at follow-up. Each finding was tabulated and compared with tissue biopsy at diagnosis and clinical status during the follow up after the therapy. A statistical calculation was done to derive the value of each modality. Results. The sensitivity and accuracy of PET/CT and CT/MRI were equally high at diagnosis. At the follow up, a negative PET/CT finding suggested a complete remission with sensitivity and negative predictive value of 100%. Conclusions. 18F FDG PET/CT is a potential modality to be utilized in following up NPC patients for evaluating a response to therapy.
Use of Masonry Construction & Demolition Waste in Concrete  [PDF]
Tahir Kibriya, Leena Tahir
World Journal of Engineering and Technology (WJET) , 2017, DOI: 10.4236/wjet.2017.52017
Abstract: Massive amounts of brick waste are obtained from demolition of old buildings and structures around the world. With the increased stress on sustainable construction, and environmentally friendly materials and greener concreting practices, a large proportion of such waste bricks are crushed and mixed with normal aggregates for use in concrete. The performance of concrete containing waste brick aggregates partially replacing normal aggregates have not been investigated for their performance. This paper covers investigations carried out on concrete with such aggregates obtained from demolition waste and mixed with varying proportions of normal aggregates to produce concrete. Two types of crushed brick aggregates were mixed with gravel in the ratios of 30:70 and 40:60 by weight and specimen were cast for investigations. Two w/c ratios were investigated. Various tests were carried out to assess the compressive strength of cubes and cylinders of mixed aggregates concrete along with f1exural strength, stress/strain behavior, moduli of elasticity, ultrasonic pulse velocity determination, densities, surface absorption, shrinkage and frost resistance. The values obtained from these tests were compared with the values of concrete with normal aggregates (gravel) with similar w/c ratios. While the strength tests and durability tests more or less gave satisfactory results however the larger moisture absorption by the waste brick aggregates reduces the frost resistance capacity somewhat thereby care needs to be exercised in using these mixes in regions/areas susceptible to frost.
Sustainable Construction—High Performance Concrete Containing Limestone Dust as Filler  [PDF]
Tahir Kibriya, Leena Tahir
World Journal of Engineering and Technology (WJET) , 2017, DOI: 10.4236/wjet.2017.53034
Abstract: Massive amounts of limestone waste are produced by the stone processing industry worldwide. Generally, it is believed that 60% to 70% of the stone is wasted in processing in the form of fragments, powder and slurry out of which around 30% is in the form of fine powder [1]. This waste has no beneficial usage and poses environmental hazards. Use of this waste product in the construction industry can largely reduce the amount of waste to be disposed off by the local municipalities in addition to reducing large burden on the environment. Some basic research on use of limestone dust as cement/ concrete filler?has?been carried out in the recent past but high strength/ high performance concretes have not been investigated yet [2] [3]. The concrete industry is among the largest consumer of raw materials worldwide and has been investigated for use of various types of waste materials like crushed brick, rice husk and straw ash as either aggregates for concrete or as partial cement substitutes. Use of limestone dust as filler material in concrete can consume a huge amount of this waste material which has to be disposed off otherwise, creating large burden on the environment. This experimental study aimed at evaluating the properties of high performance concretes made from Portland cement, natural aggregates and sand. Limestone dust was added by replacing sand in the percentages of 10% and 20%. Wide ranging investigations covering most aspects of mechanical behavior and permeability were carried out for various mixes for compressive strengths of 60?N/mm2, 80?N/mm2 and 100?N/mm2.
Sustainable Construction—Use of Stone Dust as Plasticiser in High Strength SCC with Blended Cement  [PDF]
Tahir Kibriya, Leena Tahir
World Journal of Engineering and Technology (WJET) , 2017, DOI: 10.4236/wjet.2017.53035
Abstract: Extensive growth in the developing countries due to infrastructure development is resulting into massive consumption of concrete thereby increasing the demand on concrete materials. Quite large amounts of fine aggregates are required for concrete in developing countries thus shortages of quality river sand is putting pressure on availability of fine aggregates. To fulfill the high demand of fine aggregates, a search for alternative materials is in process. Stone crushing and processing industry is a large industry which generates large amounts of stone dust and slurry which is a waste produced from this process. Tons of such waste generated has no useful purpose except as landfill material. Some preliminary studies have been conducted into use of marble/ limestone waste for use in concrete [1] [2].?This study aims at using stone dust as partial replacement of sand in concrete to observe its effects on workability and other mechanical properties. This would result in useful consumption of this waste product thereby eliminating environmental issues related to its disposal. Partial replacement of 10% and 20% sand replacement with stone dust is carried out with the use of self-compacting concrete with blended cement. Blended cement used contains 50% rice husk ash and 50% Portland cement. Such high strength SCC with blended cement containing 50% rice husk ash and 50% Portland cement has already been tested to provide better quality concrete [3]. Wide ranging investigations covering most aspects of mechanical behavior and permeability were carried out for various mixes for compressive strengths of 60?MPa & 80?MPa. Compressive strengths of high strength SCC with blended cements and 10% and 20% replacement of sand with stone dust for 60?MPa and 80?MPa were observed to be higher by about 10% to 13% than the control specimen. Higher elastic moduli and reduced permeability were observed along with better sulphate and
The Evolution of Laser in Laryngology  [PDF]
Asil Tahir
International Journal of Otolaryngology and Head & Neck Surgery (IJOHNS) , 2015, DOI: 10.4236/ijohns.2015.42024
Abstract: Technological breakthroughs in physics are often adapted and incorporated into the ever growing field of otolaryngology. When first discovered, “The Incredible Laser” had promised to be science’s new “Aladdin’s lamp”, it can “light up the moon”, “kill instantly”, or “perform miracle surgery” [1]. Although not quite fulfilling these roles, laser technology has been a key element in the development of endolaryngeal surgery. This article looks at the invention of Laser and it’s progression into an invaluable tool in the field of laryngeal surgery.
Trochiscia hamzaoglui (Chlorellales): A New Species from Central Anatolia (Turkey)  [PDF]
Tahir At?c?
American Journal of Plant Sciences (AJPS) , 2015, DOI: 10.4236/ajps.2015.613206
Abstract: A new species, Trochiscia hamzaoglui Atici sp. nova, determined from freshwater habitat, Kesik-k?prü Dam Lake on the Kizilirmak River (Kirsehir, Central Anatolia), and the sample was taken from plankton. This new species was first found in the study of algal samples from the area. Light microscope indicated a clear relationship with the species in the genus Trochiscia. Some of the characteristic features of the new taxon include a spine and an irregular cell wall. A comparison with closely related taxa is given on.
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