MyMedR

Displaying all 7 publications

Abstract:

Sort:

Fulltext Performance of organic rankine cycle using biomass as source of fuel

Ismail, H., Aziz, A. A., Rasih, R. A., Jenal, N., Michael, Z., Azmi Roslan

Journal of Advanced Research in Applied Sciences and Engineering Technology, 2016;4(1):29-46.
MyJurnal

A simulation study has been done on Organic Rankine Cycle (ORC) with nine different
working fluids in four different types of system configurations. An Organic Rankine Cycle is similar to
Rankine cycle with the exception of using organic fluids for its working fluids. It is widely claimed to
be more effective than steam Rankine cycle in low heat grade applications. The objective of the study
is to study the performance of the system in conjunction with biomass thermal system by selecting the
best working fluid and system configurations. The simulation is done using MATLAB and REFPROP
9.0 respectively. The selection of the best configuration is based on the thermal efficiency of the system.
It is found that toluene is the best option in simple ORC system. In ORC system added with internal
heat exchanger or recuperator, dodecane and propylcyclohexane are the better option compared to
other fluids. All the organic fluids show improvements with addition of recuperator. For temperature
range of 150oC-300oC, it is found that water is not effective compared to organics fluids. Superheating
process shows a slight improvement in a system with recuperator, but no improvement in simple cycle.
The highest thermal efficiency is found in Scenario D. The second best is Scenario C, followed by
Scenario A and the most ineffective is Scenario B. Copyright © 2016 Penerbit Akademia Baru - All
rights reserved.
Fulltext Knowledge, attitude and practice of oral health promoting factors among caretakers of children attending day-care centers in Kubang Kerian, Malaysia: a preliminary study

Mani SA, Aziz AA, John J, Ismail NM

J Indian Soc Pedod Prev Dent, 2010 Apr-Jun;28(2):78-83.
PMID: 20660972 DOI: 10.4103/0970-4388.66741

The role of caretakers at day-care centers has become more imperative in promoting oral health care in children since many new mothers opt to work outside their homes, leaving their children at day-care centers. The aim of this study is to assess the knowledge, attitude and practice of oral health promoting factors among secondary caretakers of children attending day-care centers.
Anti-diabetic medication burden amongst older persons with diabetes and associated quality of life

Shalihin SE, Fauzi A, Zulkifli NA, Aziz AA

Med J Malaysia, 2020 09;75(5):525-530.
PMID: 32918421

BACKGROUND: Older persons with diabetes are the major demographic of diabetic patients followed up in primary health clinics. Despite their increasing age and morbidities, they are still being managed strictly towards good sugar control in order to achieve the ideal HbA1c level without taking their quality of life into consideration. This study aimed to determine the prevalence in the use of antidiabetic drugs among older persons with diabetes and its association with their quality of life.
METHODOLOGY: A cross-sectional study was conducted among 269 older persons with diabetes in all government health clinics in Kuantan using Diabetes Quality of Life questionnaire. SPSS version 23 was used for the statistical analysis.
RESULTS: Majority of the respondents were females (61%), Malays (84.8%), pensioners (54.3%) with education up to primary school (52%) and are staying with family members (93.7%). Most of the patients were on two antidiabetic agents (48%) followed by a single antidiabetic agent (32%). Despite the risk of hypoglycaemia, 0.4% of them are on glibenclamide. The use of insulin is still common among 21% of them that are on intermediate-acting insulin, 15.6% on premixed insulin and 7.8% on short-acting insulin. Those taking a higher number of antidiabetic agents were found to be associated with poorer quality of life (p=0.001) compared to those taking one or two antidiabetic medications. Those on insulin also have significantly poorer quality of life score (p=0.012).
CONCLUSION: Despite aiming for controlled diabetes, older persons suffer poor quality of life with further intensification of their antidiabetic medications according to the guidelines. This includes the complexity of insulin usage and polypharmacy, which contribute to the low quality of life score.
Fulltext Knowledge of Good Blood Culture Sampling Practice among Healthcare Staffs in An Emergency Department - Are We Getting It Right?

Chew KS, Mohd Hashairi F, Jusoh AF, Aziz AA, Nik Hisamuddin NAR, Siti Asma H

Med J Malaysia, 2013 Aug;68(4):323-5.
PMID: 24145260 MyJurnal

Although a vital test, blood culture is often plagued with the problem of contamination and false results, especially in a chaotic emergency department setting. The objectives of this pilot study is to find out the level of understanding among healthcare staffs in emergency department, Hospital Universiti Sains Malaysia (HUSM) regarding good blood culture sampling practice.
Fulltext A mimicry of melioidosis by Klebsiella ozaenae infection

Ng TH, How SH, Kuan YC, Adzura, Aziz AA, Fauzi AR

Malays J Pathol, 2009 Dec;31(2):147-50.
PMID: 20514860 MyJurnal

Klebsiella ozaenae is a Gram negative bacillus. It has been described as a colonizer of oral and nasopharyngeal mucosa and is a cause of atrophic rhinitis. Klebsiella ozaenae has seldom been isolated from serious infections. However, several reports have stated that Klebsiella ozaenae may cause invasive infections and even mortality. We report a 55-year-old man with Klebsiella ozaenae infection causing abscesses involving the right eye and left kidney and possibly also in the brain, lungs and prostate. The isolates were sensitive to ceftazidime, ciprofloxacin, chloramphenicol, gentamicin and sulfamethoxazole-trimethoprim but resistant to ampicillin. He responded well to 4 weeks of i.v. ceftazidime and i.v. amoxycillin-clavulanic acid. To our knowledge, such a multiorgan infection has not been reported previously for this organism.
Fulltext The National Mental Health Registry (NMHR)

Aziz AA, Salina AA, Abdul Kadir AB, Badiah Y, Cheah YC, Nor Hayati A, et al.

Med J Malaysia, 2008 Sep;63 Suppl C:15-7.
PMID: 19227671

The National Mental Health Registry (NMHR) collects information about patients with mental disorder in Malaysia. This information allows us to estimate the incidence of selected mental disorders, and to evaluate risk factors and treatment in the country. The National Mental Health Registry (NMHR) presented its first report in 2004, a year after its establishment. The report focused on schizophrenia as a pioneer project for the National Mental Health Registry. The development of the registry has progressed with data collected from government-based facilities, the academia and the private sector. The 2003-2005 report was recently published and distributed. Since then the registry has progressed to include suicides and other mental illnesses such as depression. The NMHR Report 2003-2005 provides detailed information about the profile of persons with Schizophrenia who presented for the first time to various psychiatry and mental health providers throughout Malaysia. More detailed description regarding pharmacotherapy is reported and few cross tabulations done in an effort to provide better understanding and more clinically meaningful reports.
Performance of the World Health Organisation suspected COVID-19 case definition in cluster-associated and sporadic SARS-CoV-2 transmission in Malaysia

Kho SS, Aziz AA, Sia TLL, Ramarmuty HY, Sirol Aflah SS, Mohamed Gani Y, et al.

Med J Malaysia, 2023 May;78(3):279-286.
PMID: 37271836

INTRODUCTION: Cluster-associated transmission has contributed to the majority of COVID-19 cases in Malaysia. Although widely used, the performance of the World Health Organization (WHO) case definition for suspected COVID19 in environments with high numbers of such cases has not been reported.
MATERIALS AND METHODS: All suspected cases of COVID-19 that self-presented to hospitals or were cluster screened from 1st April to 31st May 2020 were included. Positive SARS-CoV-2 rRT-PCR was used as the diagnostic reference for COVID-19.
RESULTS: 540 individuals with suspected COVID-19 were recruited. Two-third of patients were identified through contact screening, while the rest presented sporadically. Overall COVID-19 positivity rate was 59.4% (321/540) which was higher in the cluster screened group (85.6% vs. 11.6%, p<0.001). Overall, cluster-screened COVID-19 cases were significantly younger, had fewer comorbidities and were less likely to be symptomatic than those present sporadically. Mortality was significantly lower in the cluster-screened COVID-19 cases (0.3% vs. 4.5%, p<0.05). A third of all chest radiographs in confirmed COVID-19 cases were abnormal, with consolidation, ground-glass opacities or both predominating in the peripheral lower zones. The WHO suspected case definition for COVID-19 accurately classified 35.4% of all COVID-19 patients, a rate not improved by the addition of baseline radiographic data. Misclassification rate was higher among the cluster-associated cases (80.6%) compared to sporadic cases (35.3%).
CONCLUSION: COVID-19 cases in Malaysia identified by active tracing of community cluster outbreaks had lower mortality rate. The WHO suspected COVID-19 performed poorly in this setting even when chest radiographic information was available, a finding that has implications for future spikes of the disease in countries with similar transmission characteristics.