Tengku Roslina Tuan Yusof
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Preferred name
Tengku Roslina Tuan Yusof
Official Name
Tengku Roslina, Tuan Yusof
Alternative Name
Tengku Roslina, T. Y.
Yusof, Tengku Roslina Tuan
Tuan Yusof, Tengku Roslina
Roslina, Tg
Main Affiliation
Scopus Author ID
57221207319
Researcher ID
GLQ-9607-2022

Research Output
Now showing 1 - 5 of 5
  • Publication
    From phytochemical composition to pharmacological importance
    (Pharmacotherapy Group, 2020)
    Mohd Faiz Mat Saad
    ;
    Hoe-Han Goh
    ;
    Roslee Rajikan
    ;
    Tengku Roslina Tuan Yusof
    ;
    Syarul Nataqain Baharum
    ;
    Hamidun Bunawan
    Purpose: To present an overview of the ethnopharmacology, phytochemistry, and pharmacological effects of the ‘wonder’ plant, Uncaria gambir (W. Hunter) Roxb. Methods: The literature search for information on phytochemical composition and pharmacological importance of U. gambir was undertaken using diverse electronic search engines, including Google, Scopus, Web of Science, scientific literature, and databases (Pubmed, Springer and Science Direct). Other relevant literature sources include books, book chapters, conference papers, theses, and other scientific publications. Results: Uncaria gambir Roxb possesses significant medicinal potentials as an antioxidant, anthelmintic, antibacterial, anti-diabetic, and for the management of osteoarthritis. Interest has increased among researchers for the utilization of this plant in complementary medicine, for example, to relieve sore throat, spongy gum, and dysentery, to treat atherosclerosis and obesity, and to prolong sexual intercourse. Conclusion: Uncaria gambir demonstrates significant pharmacological properties. This review will be useful for prospective research and development of this ethnomedicinal plant into potentially valuable health products.
  • Publication
    Design and development of driving external support for lower limb disable patients
    ( 2020-12-18)
    Nurul Najwa Mansor
    ;
    Maslinda Abu Bakar @ Yahaya
    ;
    Tengku Roslina Tuan Yusof
    ;
    Ruslizam Daud
    The driver who lower limb disabled patients were used the hand control to drive. The hand control was fixed permanently on the pedals. Thus, their family cannot share the car with them. Hence, there are several ways to innovate the hand control become portable product. This study was undertaken to investigate the characteristic driving behaviour of lower limb disabled patient yet to establish the design driving external support that was portable by using hand control. There are many types of mechanism that was used to upgrade the product function compare to existing product. The materials mainly used steel as the materials of hand control stick. The fabrication process was used two weeks to done the prototype. Using a novel upgrading of portable hand control may help the disable patient easily use the fingers and hand, without using any tools. This product also can be refit in others car. The innovation of mechanism assists patients can share their car with their family members.
      7  16
  • Publication
    Mechanical and morphology of interwoven Kenaf/PALF hybrid composites at different fibre ratio
    ( 2020-12-18)
    Maslinda Abu Bakar @ Yahaya
    ;
    Nurul Najwa Mansor
    ;
    Tengku Roslina Tuan Yusof
    ;
    Mohd Shukry Abdul Majid
    As the extension to the research involving woven and natural fibre hybrid composites, this study characterise the mechanical properties of natural fibre hybrid composites with different fibre ratio. Plain weaved kenaf/PALF composites with fibre weight ratio of 10/10, 15/15 and 20/20 are fabricated via the hand lay up technique using epoxy as the matrix. Tensile and flexural test are performed according to ASTM D3039 and ASTM D790 standards, respectively. Morphological structure of the fracture specimens were examine using the Scanning Electron Microscope (SEM). As a result, the 15/15 fibre ratio composite had the highest tensile and flexural strength. Addition of kenaf fibre improve the mechanical properties of the composites and increase the potential of PALF fibre as filler for future natural fibre applications.
      5  17
  • Publication
    Biogas production from the paddy straw pretreated with Sodium Hydroxide and co-digestion with cow manure
    ( 2024-03)
    Tengku Roslina Tuan Yusof
    ;
    Muizz Zahari
    ;
    Mariam Majid
    ;
    Abdul Syafiq Abdul Syukor
    ;
    Mohd Riduan Jamalludin
    Paddy straw waste (PS) is an organic waste that is disposed in open land after preparation of rice harvest that is generated in equal or greater quantities than the rice itself. Generally, it is disposed in open land, which increases anthropogenic gases. Converting it into useful energy or value-added products may reduce disposal problems and anthropogenic activity. In this study, PS with different treatments of sodium hydroxide (NaOH) at 2, 4, 6 , 8 and 10% was co-digested with cow dung (CD) for obtaining biogas by anaerobic digestion. For this purpose, PS was mixed with CD at different proportions, namely 50:50, 40:60, 30:70, 20:80, and 0:100 percentages on a mass basis, the samples were used in five different anaerobic digesters. The samples were kept in different anaerobic digesters for the study. The effect of important input parameters like pH and Carbon to Nitrogen (C/N) ratio on the biogas production was studied. Maximum biogas production was obtained from the co-digestion of the substrate containing 30% ps and 70% Cd for a digestion time of 20 days, and d3 shows a max pH value of 7.16. Further, the biogas collected from the digesters was characterized to ensure suitability for use as a renewable fuel. Furthermore, the digested slurry was also analyzed for its use in agriculture. The results are presented in this paper.
      1  26
  • Publication
    Methane Gas Production from different composition of Food Waste and Chicken Manure
    ( 2020-12-18)
    Tengku Roslina Tuan Yusof
    ;
    Maslinda Abu Bakar @ Yahaya
    ;
    Nurul Najwa Mansor
    ;
    Mohd Faiz M.S.
    ;
    Hasfalina C.M.
    ;
    Nor'Aini A.R.
    High carbohydrate content in food waste is one of the characteristic suitable acted as a co-substrate for fermentation to produce methane gas. In this study, co-digestion of chicken manure (CM) and food waste (FW) was used for fermentation process in methane gas production. The different effects of the independent variables (ratio, pH and temperature) is the most significant parameters of methane gas fermentation of CM and FW were investigated. Based on the analytical study showed a good fit between the experimental and the predicted data as the R2 values of 0.991 with methane yield to be 537 mL CH4/g VS at ratio 80:20 (CM:FW); temperature 35 C; and initial pH 7.11 in 20 days of fermentation. The experiment was then performed based on optimized parameters of pH, temperature and ratio at the highest yield of methane obtained from optimum parameters. After optimization, the result showed that the pH 7.11 at 35 C temperature and the ratio of 80:20 with methane production yield of 1560.5 mL CH4/g VS for the 21 days of digestion process.
      17  3