Displaying publications 1 - 20 of 152 in total

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  1. Ismail, A.K., Mohamad Ali, S., Che' Man, Z.
    Medicine & Health, 2016;11(1):29-37.
    MyJurnal
    Patients who self-discharge against medical advice (DAMA) are susceptible to life-threatening consequences. By understanding the factors associated with DAMA, healthcare centres can build strategies to assist patients to receive optimal medical care and prevent unfavourable outcome. The objective of this study was to determine the factors associated with DAMA from the Emergency Department (ED) of Universiti Kebangsaan Malaysia Medical Centre (UKMMC). This was a prospective unmatched case control study conducted over a 4-month period. For every DAMA episode, two patients who were admitted on the same day were randomly selected as control. Following patient consent, data was collected using a standardized questionnaire. Patients were contacted by the investigator for information regarding hospitalization within two weeks of DAMA. Ninety three patients were recruited; 31 DAMA patients and 62 admitted patients. Payment method was significantly associated with DAMA (OR 3.17 95% CI 1.29-7.98; p=0.01). The likelihood of self-paying patients to take DAMA was three times higher than those who had a guarantor letter from their employer or insurance provider. Other factors which influence DAMA were family obligations (OR 4.08 95% CI 1.09-15.26; p = 0.03) and work problems (OR 3.83 95% CI 1.13-12.94; p=0.03). A total of 19.4% of DAMA patients left following symptomatic pain relief. A total of 80.6% DAMA patients were admitted to hospital within two weeks of the DAMA episode. Payment method significantly influences DAMA. Payment planning, social welfare services, non-governmental organization funds and the introduction of a national health policy scheme may aid hospital payment, alleviate financial limitation of patients and reduce DAMA episodes.
  2. Suseno, S.H., Tajul, A.Y., Nadiah, W.A., Hamidah, Asti, Ali, S.
    MyJurnal
    Proximate content, fatty acid and mineral compositions were determined for the ten species of deepsea fish from Southern Java Ocean and Western Sumatra Ocean, Indonesia. The proximate composition was found to be 23.0-24.8 % protein, 1.9-4.1% fat , 0-1.75 % carbohydrate, 1.7-2.4 % ash and 70.1-72.1% water, whereas the fatty acid compositions consisted of 0.86 - 49.63 % saturated fatty acids (SFA), 0.29 - 50.09 % monounsaturated fatty acid (MUFA) and 2.85 % - 46.32 % polyunsaturated fatty acids (PUFAs). Among them, those occurring in the highest proportions were myristic acid (C14:0, 0.12-7.59%), palmitic acid (C16:0, 0.02–20.5%), stearic acid (C18:0, 0.42–49.19), oleic acid (C18:1, 0.29–50.09 %), linoleic acid (C18:2, 0.23– 44.91%), eicosapentaenoic acid (EPA, C20:5n3, 0.41– 4.61%) docosahexaenoic acid (DHA, C22:6n3, 0.28– 3.44%). The rest of the microelements, Cd, Hg, and Pb were all present in amounts below toxic levels.
  3. Ismail, N., Mohd Ali, S. S., Swaminathan, D.
    Ann Dent, 2013;20(1):8-12.
    MyJurnal
    A preliminary investigation to assess the relationship
    in the severity of periodontal disease in diabetics when
    compared with non-diabetic subjects. Materials and
    Methods: A retrospective, comparative study using
    periodontal case notes of 40 subjects (20 Type 2 diabetics,
    20 non-diabetics) who were selected based on the
    inclusion and exclusion criteria. Severity of periodontal
    disease was assessed through number of periodontal
    pocket ≥5mm. The results were compared between
    subjects whose age, gender and plaque scores are matched
    with the test group. Data obtained was then analyzed by
    SPSS Version 12. Results: When comparisons were made
    between test (Type 2 diabetic) and control (non-diabetic)
    groups, there were no significant difference (p>0.05) in
    the severity of periodontal disease. However, there was
    a clinically mean difference between the two groups.
    Conclusions: This preliminary investigation indicated
    that the severity of chronic periodontitis, as indicated in
    periodontal pocketing, increased in diabetic patients when
    compared to non-diabetics clinically, although it was not
    statistically significant. The finding of this investigation
    was thus not conclusive as it was only a retrospective
    study using patients’ case notes. However, the results
    are now being further investigated with a proper clinical
    trial which examines periodontal parameters and diabetic
    status (HbA1c) of the subjects to determine the association
    between periodontal disease and diabetes mellitus.
  4. Jawad AS, Hamid WZWA
    Saudi Med J, 2018 08;39(8):846-847.
    PMID: 30106426 DOI: 10.15537/smj.2018.8.23368
    [No abstract available].
  5. Ali S H
    Aliran Monthly, 2008;28:8-11.
    Commemorative articles on M K Rajakumar
  6. Ali S H
    Aliran Monthly, 2008;28(10):26-27.
    Commemorative articles on M K Rajakumar. Translated by Bahasa Malaysia by Tan Pek Leng.
  7. Subramaniam K, Ali SU
    Malays J Pathol, 2019 Dec;41(3):359-364.
    PMID: 31901923
    INTRODUCTION: Brucellosis is a zoonotic disease with variable clinical manifestations and atypical presentation in humans. Human brucellosis cases are not seen often in Malaysia.

    CASE REPORT: This is a case report of 19 years old gentleman who presented with fever, lower limb redness, pain and swelling. He was initially treated as cellulitis. However, based on the recovery of Brucella melitensis from his blood culture, he was later diagnosed to have brucellosis. He had a history of consumption of fresh goat's milk and uncooked meat which could have been the possible modes of transmission. Brucella serology IgM and IgG were both positive, and anti-Brucella immunocapture agglutination test (BrucellaCapt) was also positive with a titer of 1:2560. He was treated with six weeks of oral doxycycline 100 mg twice daily and oral rifampin 450 mg twice daily.

    DISCUSSION: This is a case of human brucellosis with atypical cutaneous involvement.

  8. Ali S, Talha N
    J Public Aff, 2021 Nov 07.
    PMID: 34899065 DOI: 10.1002/pa.2789
    The purpose of this research is to look into financial management behavior during the COVID-19. Without a doubt, financial knowledge is an important, but in the COVID-19, the majority of people are experiencing economic insecurity, which is regarded as unique contribution when testing financial management behavior. Furthermore, Pakistan is an Islamic country, so, financial knowledge, is further subdivided into objective, subjective, and Islamic financial knowledge, with financial wellbeing serving as mediating variable. Pakistan has a diverse population of respondents, this model was tested on university students in Pakistan between the ages of 20 and 40, with the majority of respondents experiencing job and food insecurity as a result of COVID-19. The research employs a two-stage method, PLS-SEM, for reliability checking via composite reliability and average variance extract, and discriminant validity checking via HTMT ratio. According to the findings, Islamic financial knowledge as positive, and other financial knowledge as negative, and economic insecurity (food and job insecurity) also has negative and significant impact on students' financial management behavior. Financial well-being significantly acts as a bridge between independents and dependent variables. The findings imply that financial knowledge has a significant impact on financial management behavior. Policymakers and administrators should improve information disclosure while promoting financial education in order to foster trust and responsible financial conduct among people.
  9. Hamdi SS, Al-Kayiem HH, Muhsan AS, Magaril E
    Data Brief, 2020 Aug;31:105702.
    PMID: 32462067 DOI: 10.1016/j.dib.2020.105702
    The data in this article present the effective parameters of experimental ultrasonication process on the dispersion stability of graphene nanoplatelets (GNPs) grafted with a natural polymer of Gum Arabic (GA). These datasets are supporting the article "Natural Polymer Non-Covalently Grafted Graphene Nanoplatelets for Improved Oil Recovery Process: A Micromodel Evaluation" [1]. The datasets were gained during experiments conducted at various dwell time (30, 60, 90 and 120 min) at constant power amplitude (60%) of sonication for preparing the stable GA-GNP/brine solutions aiming cost-effective and green agent solution for chemical enhanced oil recovery (C-EOR). The GA-GNPs dispersion data was verified using particle size analyser and UV-Vis measurements. The optimized time and power amplitude parameters of the sonication process were utilized for preparing stabilized samples of GA grafted GNPs in regarding to research work on Natural Polymer Non-Covalently Grafted Graphene Nanoplatelets for EOR. The dispersion stability of GA-GNPs nanofluids at reservoir conditions of high salinity and high temperatures (HSHT) was further demonstrated in the measured data through the sedimentation of nanoparticles.
  10. Jassim GA, Doherty S, Whitford DL, Khashan AS
    Cochrane Database Syst Rev, 2023 Jan 11;1(1):CD008729.
    PMID: 36628983 DOI: 10.1002/14651858.CD008729.pub3
    BACKGROUND: Breast cancer is the most common cancer affecting women worldwide. It is a distressing diagnosis and, as a result, considerable research has examined the psychological sequelae of being diagnosed and treated for breast cancer. Breast cancer is associated with increased rates of depression and anxiety and reduced quality of life. As a consequence, multiple studies have explored the impact of psychological interventions on the psychological distress experienced after a diagnosis of breast cancer. This review is an update of a Cochrane Review first published in 2015.

    OBJECTIVES: To assess the effect of psychological interventions on psychological morbidities and quality of life among women with non-metastatic breast cancer.  SEARCH METHODS: We searched the Cochrane Breast Cancer Group Specialised Register, CENTRAL, MEDLINE, Embase, CINAHL, PsycINFO, the World Health Organization International Clinical Trials Registry Platform (WHO ICTRP) and ClinicalTrials.gov up to 16 March 2021. We also scanned the reference lists of relevant articles.

    SELECTION CRITERIA: Randomised controlled trials that assessed the effectiveness of psychological interventions for women with non-metastatic breast cancer.

    DATA COLLECTION AND ANALYSIS: Two review authors independently appraised, extracted data from eligible trials, and assessed risk of bias and certainty of the evidence using the GRADE approach. Any disagreement was resolved by discussion. Extracted data included information about participants, methods, the intervention and outcomes.

    MAIN RESULTS: We included 60 randomised controlled trials comprising 7998 participants. The most frequent reasons for exclusion were non-randomised trials and the inclusion of women with metastatic disease. The updated review included 7998 randomised women; the original review included 3940 women. A wide range of interventions was evaluated. Most interventions were cognitive- or mindfulness-based, supportive-expressive, and educational. The interventions were mainly delivered face-to-face (56 studies) and in groups (50 studies) rather than individually (10 studies). Most intervention sessions were delivered on a weekly basis with an average duration of 14 hours. Follow-up time ranged from two weeks to 24 months.  Pooled standardised mean differences (SMD) from baseline indicated that the intervention may reduce depression (SMD -0.27, 95% confidence interval (CI) -0.52 to -0.02; P = 0.04; 27 studies, 3321 participants, I2 = 91%, low-certainty evidence); anxiety (SMD -0.43, 95% CI -0.68 to -0.17; P = 0.0009; 22 studies, 2702 participants, I2 = 89%, low-certainty evidence); mood disturbance in the intervention group (SMD -0.18, 95% CI -0.31 to -0.04; P = 0.009; 13 studies, 2276 participants, I2 = 56%, low-certainty evidence); and stress (SMD -0.34, 95% (CI) -0.55 to -0.12; P = 0.002; 8 studies, 564 participants, I2 = 31%, low-certainty evidence). The intervention is likely to improve quality of life in the intervention group (SMD 0.78, 95% (CI) 0.32 to 1.24; P = 0.0008; 20 studies, 1747 participants, I2 = 95%, low-certainty evidence). Adverse events were not reported in any of the included studies.

    AUTHORS' CONCLUSIONS: Based on the available evidence, psychological intervention may have produced favourable effects on psychological outcomes, in particular depression, anxiety, mood disturbance and stress. There was also an improvement in quality of life in the psychological intervention group compared to control group. Overall, there was substantial variation across the studies in the range of psychological interventions used, control conditions, measures of the same outcome and timing of follow-up.

  11. Ali S, Garforth A, Fakhru'l-Razi A
    PMID: 16760091
    Feedstock recycling of high-density polyethylene (HDPE) over fluid catalytic cracking (FCC) catalysts (1:6 ratio) was carried out using a laboratory fluidized bed reactor operating at 450 degrees C. Fresh and steam deactivated commercial FCC catalysts with different levels of rare earth oxide (REO) were compared as well as used FCC catalysts (E-Cats) with different levels of metal poisoning. Fresh FCC catalysts gave the highest results of HDPE degradation in terms of yield of volatile hydrocarbon product. Meanwhile, steamed FCC catalysts and used FCC catalysts showed similar but lower yields. Overall, the product yields from HDPE cracking showed that the level of metal contamination (nickel and vanadium) did not affect the product stream generated from polymer cracking. This study gives promising results as an alternative technique for the cracking and recycling of polymer waste.
  12. Islam N, Hasan M, Ali SM
    Med J Malaysia, 1977 Jun;31(4):322-5.
    PMID: 927240
  13. Ali S, Mohd Zabidi NA, Subbarao D
    Chem Cent J, 2011;5:68.
    PMID: 22047220 DOI: 10.1186/1752-153X-5-68
    This paper presents the synthesis and characterization of monometallic and bimetallic cobalt and iron nanoparticles supported on alumina. The catalysts were prepared by a wet impregnation method. Samples were characterized using temperature-programmed reduction (TPR), temperature-programmed oxidation (TPO), CO-chemisorption, transmission electron microscopy (TEM), field emission scanning electron microscopy (FESEM-EDX) and N2-adsorption analysis. Fischer-Tropsch synthesis (FTS) was carried out in a fixed-bed microreactor at 543 K and 1 atm, with H2/CO = 2 v/v and space velocity, SV = 12L/g.h. The physicochemical properties and the FTS activity of the bimetallic catalysts were analyzed and compared with those of monometallic cobalt and iron catalysts at similar operating conditions.H2-TPR analysis of cobalt catalyst indicated three temperature regions at 506°C (low), 650°C (medium) and 731°C (high). The incorporation of iron up to 30% into cobalt catalysts increased the reduction, CO chemisorption and number of cobalt active sites of the catalyst while an opposite trend was observed for the iron-riched bimetallic catalysts. The CO conversion was 6.3% and 4.6%, over the monometallic cobalt and iron catalysts, respectively. Bimetallic catalysts enhanced the CO conversion. Amongst the catalysts studied, bimetallic catalyst with the composition of 70Co30Fe showed the highest CO conversion (8.1%) while exhibiting the same product selectivity as that of monometallic Co catalyst. Monometallic iron catalyst showed the lowest selectivity for C5+ hydrocarbons (1.6%).
  14. Khan MH, Ali S, Fakhru'l-Razi A, Alam Z
    J Environ Sci Health B, 2007 May;42(4):381-6.
    PMID: 17474017
    Cellulase production was carried out by solid state bioconversion (SSB) method using rice straw, a lignocellulosic material and agricultural waste, as the substrate of three Trichoderma spp. and Phanerochaete chrysosporium in lab-scale experiments. The results were compared to select the best fungi among them for the production of cellulase. Phanerochaete chrysosporium was found to be the best among these species of fungi, which produced the highest cellulase enzyme of 1.43 IU/mL of filter paper activity (FPase) and 2.40 IU/mL of carboxymethylcellulose activity (CMCase). The "glucosamine" and "reducing sugar" parameters were observed to evaluate the growth and substrate utilization in the experiments. In the case of Phanerochaete Chrysosporium, the highest glucosamine concentration was 1.60 g/L and a high concentration of the release of reducing sugar was measured as 2.58 g/L obtained on the 4th day of fermentation. The pH values were also recorded. The range of the pH was about 5.15 to 5.56 in the case of Phanerochaete Chrysosporium.
  15. Ali S, Yusop Z, Meo MS
    PMID: 34854006 DOI: 10.1007/s11356-021-17473-8
    Trade openness continues to have the potential to influence many parts of today's society, including religion, transportation, lifestyle, language, and international relations; however, its ability to impact environmental quality is the primary issue for environmental policy guidelines. In response to an increasing interest in finding the dynamic association between trade openness and environmental quality, the current study explores the trade openness- environmental quality nexus in the ten most open Organization of Islamic Cooperation (OIC) countries for the years 1991 to 2018. By taking CO2 emissions and ecological footprint as environmental indicators, a novel methodology "quantile-on-quantile (QQ)" is used to indicate how different quantiles of trade openness asymmetrically affect the quantiles of environmental indicators by providing an adequate pattern to comprehend the overall dependence structure. A negative openness-CO2 emissions association is dominant in seven out of ten selected OIC countries (i.e., Suriname, Malaysia, Jordan, UAE, Libya, Brunei, and Qatar). On the other hand, a positive impact of trade openness on ecological footprint is dominant in eight out of ten selected OIC countries (i.e., Oman, Jordan, UAE, Libya, Bahrain, Brunei, Qatar, and Kuwait). The outcomes indicate that the asymmetric strength of openness-induced environmental quality differs with countries at both upper and bottom quantiles of data distribution that need specific attention in contending trade and environment policies in OIC countries.
  16. Ali S, Jorge J, Aslam M, Kashif M
    Sci Rep, 2024 Jan 24;14(1):2092.
    PMID: 38267592 DOI: 10.1038/s41598-024-52619-x
    In this article, an attribute control chart is proposed when the lifetime of a product follows a Weibull distribution in two-stage sampling, which is based on the number of failures from a truncated life test. The coefficients of the proposed double sampling attribute control chart and the test duration are determined so that the average run length when the process is in control is close to the target value. An overview is reported on how double sampling np control charts work. Tables reporting the out-of-control average run lengths are given for various shift parameters. A case study is given to illustrate the proposed control chart for industrial use. A comparison of two-stage and single-stage sampling of failure of products is discussed.
  17. Paracha KN, Butt AD, Alghamdi AS, Babale SA, Soh PJ
    Sensors (Basel), 2019 Dec 28;20(1).
    PMID: 31905646 DOI: 10.3390/s20010177
    This work reviews design aspects of liquid metal antennas and their corresponding applications. In the age of modern wireless communication technologies, adaptability and versatility have become highly attractive features of any communication device. Compared to traditional conductors like copper, the flow property and lack of elasticity limit of conductive fluids, makes them an ideal alternative for applications demanding mechanically flexible antennas. These fluidic properties also allow innovative antenna fabrication techniques like 3D printing, injecting, or spraying the conductive fluid on rigid/flexible substrates. Such fluids can also be easily manipulated to implement reconfigurability in liquid antennas using methods like micro pumping or electrochemically controlled capillary action as compared to traditional approaches like high-frequency switching. In this work, we discuss attributes of widely used conductive fluids, their novel patterning/fabrication techniques, and their corresponding state-of-the-art applications.
  18. Alam MK, Awawdeh M, Aljhani AS, Alotaib GS, Abutayyem H, Alswairki HJ, et al.
    Children (Basel), 2023 May 15;10(5).
    PMID: 37238433 DOI: 10.3390/children10050885
    BACKGROUND AND OBJECTIVES: Investigation into the impact of dental trauma on the results of orthodontic treatment is crucial because it can have a major influence on patient care. However, there has not yet been a thorough review or meta-analysis of the available data, which is inconsistent and scant. Therefore, the goal of this systematic review and meta-analysis is to investigate the impact of dental trauma on orthodontic parameters. Search methods and criterion of selection: Major online databases were searched (beginning from the year 2011) for relevant articles using a properly defined search strategy. Analysis protocol: Risk of bias (RoB) and the Cochrane risk of bias tool were utilized for the purposes of bias evaluation within the individual studies and within the review, respectively.

    RESULTS: Out of the six clinical trials selected, a significant impact of trauma was observed in individuals in all but one paper. Gender predilection varied across studies and could not be conclusively determined. The follow-up period ranged from two months to two years in the trials. The odds ratio (OR) 0.38 [0.19, 0.77] and the risk ratio (RR) 0.52 [0.32, 0.85] indicated that both the odds as well as the relative risk of experiencing dental trauma were lower in the group with negligible impact compared to the group with noticeable impact. Conclusion and further implications: The findings show that dental trauma significantly affects orthodontic parameters, with lower risk and likelihood of suffering dental trauma in the group with negligible impact than in the group with noticeable impact. However, given the substantial heterogeneity among the studies, it is advised to exercise caution when extrapolating the findings to all populations. Registration and protocol: Registration in the PROSPERO database was carried out before initiating the investigation [CRD42023407218].

  19. Hussein OA, Habib K, Saidur R, Muhsan AS, Shahabuddin S, Alawi OA
    RSC Adv, 2019 Nov 25;9(66):38576-38589.
    PMID: 35540235 DOI: 10.1039/c9ra07811h
    Covalent functionalization (CF-GNPs) and non-covalent functionalization (NCF-GNPs) approaches were applied to prepare graphene nanoplatelets (GNPs). The impact of using four surfactants (SDS, CTAB, Tween-80, and Triton X-100) was studied with four test times (15, 30, 60, and 90 min) and four weight concentrations. The stable thermal conductivity and viscosity were measured as a function of temperature. Fourier transform infrared spectroscopy (FTIR), thermo-gravimetric analysis (TGA), X-ray diffraction (XRD) and Raman spectroscopy verified the fundamental efficient and stable CF. Several techniques, such as dispersion of particle size, FESEM, FETEM, EDX, zeta potential, and UV-vis spectrophotometry, were employed to characterize both the dispersion stability and morphology of functionalized materials. At ultrasonic test time, the highest stability of nanofluids was achieved at 60 min. As a result, the thermal conductivity displayed by CF-GNPs was higher than NCF-GNPs and distilled water. In conclusion, the improvement in thermal conductivity and stability displayed by CF-GNPs was higher than those of NCF-GNPs, while the lowest viscosity was 8% higher than distilled water, and the best thermal conductivity improvement was recorded at 29.2%.
  20. Razak NA, Osman NA, Gholizadeh H, Ali S
    Biomed Eng Online, 2014;13:108.
    PMID: 25085005 DOI: 10.1186/1475-925X-13-108
    The interface pressure between the residual limb and prosthetic socket has a significant effect on an amputee's satisfaction and comfort. This paper presents the design and performance of a new prosthetic socket that uses an air splint system.
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