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Search Results: 1 - 10 of 924 matches for " Siti Roszilawati Ramli "
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Screening and detection of heterogenous vancomycin intermediate Staphylococcus aureus in Hospital Kuala Lumpur Malaysia, using the glycopeptide resistance detection etest and population analysis profiling
Siti Roszilawati Ramli,Hui-min Neoh,Muhammad Nazri Aziz,Salasawati Hussin
Infectious Disease Reports , 2012, DOI: 10.4081/idr.2012.e20
Abstract: In a 3-month study done in Hospital Kuala Lumpur (HKL), 7 out of 320 methicillin resistant Staphylococcus aureus isolates were confirmed as heterogeneous vancomycin intermediate S. aureus (hVISA) using the glycopeptide resistance detection e-test and population analysis, giving a prevalence rate of 2.19%. This is the first report of hVISA in Malaysia.
A Severe Case of Arthrographis kalrae Keratomycosis
Siti Roszilawati Ramli,Alex Lourdes Francis,Yushaniza Yusof,Tzar Mohd Nizam Khaithir
Case Reports in Infectious Diseases , 2013, DOI: 10.1155/2013/851875
Abstract: A 52-year-old man with diabetes developed a unilateral central corneal ulcer after accidental foreign body inoculation. He complained of pain and loss of visual acuity in the injured eye, which displayed redness and edema and eventually discharged pus. A corneal scraping from the left eye orbit revealed fungal elements, and cultures of the material grew a fungus. The isolate was identified as Arthrographis kalrae based on gross and microscopic morphologies. The patient received amphotericin B intravenously and itraconazole orally. The wound healed following surgical intervention, but the patient lost the use of his left eye. 1. Case Report A 52-year-old gentleman and a known case of diabetes mellitus presented with left eye pain for 1-week duration after accidental foreign body inoculation while riding his motorcycle. The eye was red, watery, and vision was reduced 3 days before admission. He was referred to Hospital Seri Manjung after seven days, when treatment with chloramphenicol ointment by a nearby government clinic failed. His left vision was compromised, 6/12 on glasses and 6/18 unaided compared to 6/9 with glasses and 6/6 unaided in his right eye. Slit lamp examination of the left cornea disclosed corneal ulcer with epithelial and stromal infiltrates and surrounding edema along with endothelial plaque. Epithelial abrasion was also present measuring 4?mm long and 3.8?mm wide. The corneal sensation in the left eye was reduced. There was also meibomitis in both eyes. A diagnosis of infectious keratitis was made. Both systemic and topical antifungal and antibiotics were prescribed; that is, tablet vibramycin 100?mg daily and tablet fluconazole 200?mg daily together with hourly intensive gentamycin, cefuroxime, amphotericin B, fluconazole, and acyclovir eye drops 5 times a day were started. After a week, the left eye stromal infiltrates and the endothelial plaques showed gradual reduction with treatment. The patient asked for a discharge against medical advice, and after a few days, he came back as there was rapid deterioration with formation of dense stromal abscess, hypopyon and haziness at the superior aspect of the cornea and secondary glaucoma. The corneal epithelial defect had increased in size to 8?mm wide and 9.6?mm long. Corneal scraping showed presence of few pus cells; however, no organism was noted. Culture grew a fast growing mould.Colonies on Sabouraud dextrose agar (SDA) at 30°C were cream coloured and appeared pasty. However, after 24 hours, they became dry and velvety, and after a further 48-hour incubation, the colonies became
Experimental Study on the Mixing of Binary Polymer Particles in Different Types of Mixer
Almahdi Atteya Alhwaige,Siti Masrinda Tasirin,Wan Ramli Wan Daud
Journal of Applied Sciences , 2007,
Abstract: In this study an experimental study of mixing process of free flowing polymers binary mixtures at different densities and colours in three mixers was investigated. The state of mixing of solids was studied by analysing the variation of the proportions of the marked particles with time and position in the bed or in the mixer. The variation of mixture composition based on the samples was incorporated into Lacey mixing index which describes the degree of mixing of the particles at particular time. This method enables assessment of the overall mixing behaviour in terms of the rate of mixing (through estimation of the time required for the mixing index to increase from zero to a certain value), together with the degree of mixing at the mixing equilibrium. Results showed that gas velocity and bed depth are important parameters influencing solids mixing in a bubbling fluidised bed. Whilst it was observed that the rotation speeds and filled up levels are important parameters influencing solids mixing in V-mixer and Nauta-mixer. From the results, complete mixing was attained at a bed depth of 17 cm and gas velocity of 1.38Umf in the fluidised bed; 40% filled up level and 40 rpm in the V-mixer and 50% filled up level and 5 rpm in the Nauta-mixer. From the energy consumption analysis made, it was found that a fluidised bed mixer offers the most efficient and economical process compared to the V-mixer and Nauta-mixer.
Influence of Behavioral Factors on Mobile Phone Usage among Fishermen: The Case of Pangkor Island Fishermen
Siti Aisyah Bt Ramli,Siti Zobidah Omar,Jusang Bolong,Jeffrey Lawrence DSilva
Asian Social Science , 2013, DOI: 10.5539/ass.v9n5p162
Abstract: The swift evolution of mobile phone technology has benefited various groups within communities. Fishermen, as one of the important groups, particularly in terms of their role in ensuring the nation’s food security, rely on mobile phones to conduct their fishing routines. While there is an abundance of studies that explore factors influencing mobile phone usage in various groups of communities, less interest has been placed on mobile phone usage among fishermen. This has driven the current study to its focal objective, which is to determine the behavioral factors that influence the usage of mobile phones among fishermen. This study is quantitative, and surveys a total of 250 registered fishermen from Pangkor Island – one of the main fishing areas in Perak. The results demonstrate that most of the fishermen use mobile phones for safety and communication purposes. In addition, due to a number of problems, fishermen are found to use advanced mobile phone applications such as 3G, Internet and GPS at a minimal level. Further analysis confirms that four behavioral factors, namely performance expectancy, effort expectancy, behavioral intention and social influence, have positive and significant correlations with mobile phone usage.
The Effect of Environmental Conditions on Biofilm Formation of Burkholderia pseudomallei Clinical Isolates
Nur Siti K. Ramli, Chua Eng Guan, Sheila Nathan, Jamuna Vadivelu
PLOS ONE , 2012, DOI: 10.1371/journal.pone.0044104
Abstract: Burkholderia pseudomallei, a Gram-negative saprophytic bacterium, is the causative agent of the potentially fatal melioidosis disease in humans. In this study, environmental parameters including temperature, nutrient content, pH and the presence of glucose were shown to play a role in in vitro biofilm formation by 28 B. pseudomallei clinical isolates, including four isolates with large colony variants (LCVs) and small colony variants (SCVs) morphotypes. Enhanced biofilm formation was observed when the isolates were tested in LB medium, at 30°C, at pH 7.2, and in the presence of as little as 2 mM glucose respectively. It was also shown that all SVCs displayed significantly greater capacity to form biofilms than the corresponding LCVs when cultured in LB at 37°C. In addition, octanoyl-homoserine lactone (C8-HSL), a quorum sensing molecule, was identified by mass spectrometry analysis in bacterial isolates referred to as LCV CTH, LCV VIT, SCV TOM, SCV CTH, 1 and 3, and the presence of other AHL's with higher masses; decanoyl-homoserine lactone (C10-HSL) and dodecanoyl-homoserine lactone (C12-HSL) were also found in all tested strain in this study. Last but not least, we had successfully acquired two Bacillus sp. soil isolates, termed KW and SA respectively, which possessed strong AHLs degradation activity. Biofilm formation of B. pseudomallei isolates was significantly decreased after treated with culture supernatants of KW and SA strains, demonstrating that AHLs may play a role in B. pseudomallei biofilm formation.
Study The Homogeneity of Mixing a Binary Polyethylene Granular Mixture in Fluidised Bed Mixer
Almahdi Atteya. Alhwaige,Siti Masrinda Tasirin,Ahmad Mokhtar Sowedan,Wan Ramli Wan Daud
Lecture Notes in Engineering and Computer Science , 2008,
Unsteady State Modeling and Analysis of a Passive Liquid-feed DMFC
Sahriah Basri,Siti Kartom Kamarudin,Wan Ramli Nan Daud,Norhafiz Hashim
Journal of Applied Sciences , 2011,
Abstract: A one-dimensional, unsteady state, two phase model has been developed for a liquid-feed DMFC delivery system including the fuel cell itself. The model considers the mass and heat transport in the feed delivery system attached to the anode and cathode of the fuel cell. The effects of feed methanol concentration in the reservoir and current density on mass transport of catalyst layer revealed. It is further revealed that the optimum performance with 4 M methanol concentrations in term of methanol crossover with consideration of time.
Antibiogram for Haemodialysis Catheter-Related Bloodstream Infections
Abdul Halim Abdul Gafor,Pau Cheong Ping,Anis Farahanum Zainal Abidin,Muhammad Zulhilmie Saruddin,Ng Kah Yan,Siti Qania’ah Adam,Ramliza Ramli,Anita Sulong,Petrick Periyasamy
International Journal of Nephrology , 2014, DOI: 10.1155/2014/629459
Abstract: Background. Haemodialysis (HD) catheter-related bloodstream infections (CRBSIs) are a major complication of long-term catheter use in HD. This study identified the epidemiology of HD CRBSIs and to aid in the choice of empiric antibiotics therapy given to patients with HD CRBSIs. Methods. Patients with HD CRBSIs were identified. Their blood cultures were performed according to standard sterile technique. Specimens were sent to the microbiology lab for culture and sensitivity testing. Results were tabulated in antibiograms. Results. 18 patients with a median age of 61.0 years (IQR: 51.5–73.25) were confirmed to have HD CRBSIs based on our study criteria. Eight (44.4%) patients had gram-negative infections, 7 (38.9%) patients gram-positive infections, and 3 (16.7%) patients had polymicrobial infections. We noted that most of the gram-negative bacteria were sensitive to ceftazidime. Unfortunately, cloxacillin resistance was high among gram-positive organisms. Coagulase-negative Staphylococcus and Bacillus sp. were the most common gram-positive organisms and they were sensitive to vancomycin. Conclusion. Our study revealed the increased incidence of gram-negative organism in HD CRBSIs. Antibiogram is an important tool in deciding empirical antibiotics for HD CRBSIs. Tailoring your antibiotics accordingly to the antibiogram can increase the chance of successful treatment and prevent the emergence of bacterial resistance. 1. Introduction Chronic kidney disease (CKD) is a major public health burden [1]. The contribution of CKD to the global burden of disease may be underestimated due to the lack of significant importance in certain kidney disease classifications and failure to realize the relationship of CKD with cardiovascular disease [1]. The prevalence of end-stage renal disease (ESRD) is increasing exponentially worldwide. USA, Japan, and Taiwan had the highest rate of prevalence of ESRD [2]. In Malaysia, dialysis is the main modality of renal replacement therapy. There were about 26,000 patients on dialysis in 2011 with the prevalence of 900 per million populations [3]. Haemodialysis (HD) accounts for about 89% of dialysis patients and most of them were accepted to centre HD [4]. Unfortunately, not all patients enter HD program with a native vascular access. Many patients still presented late and HD access catheter, either cuffed or noncuffed catheters, is needed to perform HD. The use of HD catheter had increased from 3% in 2002 to 8.1% in 2011 of all vascular accesses [5]. We cannot argue that HD catheter plays a very important role in the treatment of
On the maximal temporal amplitude of down stream running nonlinear water waves
Marwan Ramli
Tamkang Journal of Mathematics , 2010, DOI: 10.5556/j.tkjm.41.2010.51-69
Abstract: This paper concerns with the down-stream propagation of waves over initially still water. Such a study is relevant to generate waves of large amplitude in wave tanks of a hydrodynamic laboratory. Input in the form of a time signal is provided at the wave-maker located at one side of the wave tank; the resulting wave then propagates over initially still water towards the beach at the other side of the tank. Experiments show that nonlinear effects will deform the wave and may lead to large waves with wave heights larger than twice the original input; the deformations may show itself as peaking and splitting. It is of direct scientific interest to understand and quantify the nonlinear distortion; it is also of much practical interest to know at which location in the wave tank, the extreme position, the waves will achieve their maximum amplitude and to know the amplitude amplification factor. To investigate this, a previously introduced concept called Maximal Temporal Amplitude (MTA) is used: at each location the maximum over time of the wave elevation. An explicit expression of the MTA cannot be found in general from the governing equations and generating signal. In this paper we will use a Korteweg - de Vries (KdV) model and third order approximation theory to calculate the approximate extreme positions for two classes of waves. The classes are the wave-groups that originate from initially bi-chromatics and Benjamin-Feir (BF) type of waves, described by superposition of two or three monochromatic waves. We show that for initially bi-chromatics signals, the extreme position does not depend on the phases of the mono-chromatic components. For BF signals, however, the phases of the mono-chromatic components influence the extreme position essentially. The theoretical results are verified for the case of bi-chromatics with numerical as well as experimental results; for BF signals we use an analytical solution called the Soliton on Finite Background (SFB) for comparison.
Ketersampaian Masyarakat Tani Kepada Pelaburan Saham Amanah
Zaimah Ramli
e-BANGI : Journal of Social Sciences and Humanities , 2010,
Abstract: Umum menyedari bahawa melabur dalam saham amanah merupakan suatu langkah bijak dalam usaha meningkatkan pendapatan. Persoalannya, apakah semua lapisan masyarakat di negara ini mempunyai ketersampaian kepada saham amanah tersebut, terutamanya mereka yang tergolong dalam kumpulan berpendapatan rendah. Kajian ini menilai sejauhmana masyarakat desa, iaitu pesawah padi mempunyai ketersampaian terhadap saham amanah yang terdapat di negara ini. Kajian turut mengenalpasti faktor-faktor penggalak dan penghalang yang mempengaruhi ketersampaian mereka. Dapatan kajian mengesahkan bahawa, meskipun kebanyakan golongan petani ini mempunyai pengetahuan umum mengenai saham amanah, tetapi ketersampaian dan penglibatan mereka secara langsung dalam pelaburan tersebut adalah agak terbatas. Tarikan kadar dividen yang tinggi dikenalpasti sebagai faktor penggalak utama mereka menyertai saham amanah. Manakala, dua faktor utama yang menghalang mereka daripada terlibat dalam saham amanah ialah kekurangan pendapatan dan kurangnya pendedahan terhadap pelaburan saham amanah itu sendiri. Secara keseluruhannya, penglibatan pesawah-pesawah padi terbabit dalam saham amanah adalah amat rendah dan terbatas. Fenomena ini cukup jelas apabila kebanyakan mereka kurang berkemampuan untuk mempertahan dan meningkatkan nilai pelaburan mereka.
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