Ahmad Radi Wan Yaakub
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Ahmad Radi Wan Yaakub
Official Name
Ahmad Radi, Wan Yaakub
Alternative Name
Wan Yaakub, Ahmad Radi
Main Affiliation
Scopus Author ID
57221283601

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  • Publication
    Analysis on silica and graphene nanomaterials obtained from rice straw for antimicrobial potential
    ( 2024-06)
    Muhammad Nur Aiman Uda
    ;
    N. H. A Jalil
    ;
    Muhammad Firdaus Abdul Muttalib
    ;
    Fahisal Abdullah
    ;
    Uda Hashim
    ;
    Subash Chandra Bose Gopinath
    ;
    Shahidah Arina Shamsuddin
    ;
    Nursakinah Abdul Karim
    ;
    Ahmad Radi Wan Yaakub
    ;
    Nur Hulwani Ibrahim
    ;
    Tijjani Adam
    ;
    Nor Azizah Parmin
    ;
    Nadiya Akmal Baharum
    This study focuses on the encapsulation of silica and graphene nanoparticles and their potential applications. The encapsulation enhances the properties and effectiveness of these nanoparticles, with silica providing stability and graphene contributing to high surface area and electrical conductivity. Characterization of silica-graphene nanoparticles was conducted using various techniques including High Power Microscope (HPM), Scanning Electron Microscope (SEM), Energy-dispersive X-ray spectroscopy (EDS), and 3D Nano Profiler. The antimicrobial activity of silica, graphene, and silica-graphene nanoparticles was evaluated using a disc diffusion assay against E. coli and B. subtilis at varying concentrations. Results showed significant antimicrobial activity, with the inhibition zone being directly proportional to the concentration. Silica-graphene nanoparticles demonstrated higher efficacy against E. coli compared to B. subtilis, attributed to differences in cell wall structure. Statistical analysis using ANOVA confirmed significant differences in antimicrobial activity among the tested components.
  • Publication
    Analysis on Silica and Graphene Nanomaterials Obtained From Rice Straw for Antimicrobial Potential
    ( 2024-06-12)
    Muhammad Nur Aiman Uda
    ;
    A Jalil N.H.
    ;
    Muhammad Firdaus Abdul Muttalib
    ;
    Fadhilnor Abdullah
    ;
    Uda Hashim
    ;
    Subash Chandra Bose Gopinath
    ;
    Afnan Uda M.N.
    ;
    Shahidah Arina Shamsuddin
    ;
    Norizah Abd Karim
    ;
    Ahmad Radi Wan Yaakub
    ;
    Ibrahim N.H.
    ;
    Tijjani Adam
    ;
    Nor Azizah Parmin
    ;
    Baharum N.A.
    This study focuses on the encapsulation of silica and graphene nanoparticles and their potential applications. The encapsulation enhances the properties and effectiveness of these nanoparticles, with silica providing stability and graphene contributing to high surface area and electrical conductivity. Characterization of silica-graphene nanoparticles was conducted using various techniques including High Power Microscope (HPM), Scanning Electron Microscope (SEM), Energy-dispersive X-ray spectroscopy (EDS), and 3D Nano Profiler. The antimicrobial activity of silica, graphene, and silica-graphene nanoparticles was evaluated using a disc diffusion assay against E. coli and B. subtilis at varying concentrations. Results showed significant antimicrobial activity, with the inhibition zone being directly proportional to the concentration. Silica-graphene nanoparticles demonstrated higher efficacy against E. coli compared to B. subtilis, attributed to differences in cell wall structure. Statistical analysis using ANOVA confirmed significant differences in antimicrobial activity among the tested components.
      4
  • Publication
    Assessment of heavy metals contamination studies in paddy grains around paddy field in Perlis
    ( 2020-11-02)
    Muhammad Nur Aiman Uda
    ;
    Uda Hashim
    ;
    Subash Chandra Bose Gopinath
    ;
    Uda, Muhammad Nur Afnan
    ;
    Ahmad Radi Wan Yaakub
    According to media reports, environmental pollution by heavy metals is harmful to the millions of people across the world. Apart from that, heavy metal accumulation may have an effect on animal and plants as well due to their toxicity. In agriculture sector, irrigation with high a toxicity of heavy metals will affect the growth of plant. Rice for example is grown in flooded fields thus are easily immobilized as compared to dryland crop. In fact, this heavy metal is readily available and become severe to paddy plant. Therefore, this study aims to quantify and focus on the concentrations of arsenic and zinc in paddy grains, where it will help a researcher to monitor and trace the amount of heavy metal in paddy field especially in paddy grains.
      5  25
  • Publication
    Diagnosing metabolic diseases by nanoparticle immobilization
    ( 2020-01-01)
    Nor Azizah Parmin
    ;
    Uda Hashim
    ;
    Subash Chandra Bose Gopinath
    ;
    Nadzirah S.
    ;
    Muhammad Nur Uda
    ;
    Muhammad Nur Aiman Uda
    ;
    Voon Chun Hong
    ;
    Isa A.M.
    ;
    Ahmad Radi Wan Yaakub
    Metabolic disease is a group of conditions that expand the risk of heart disease, stroke, and type 2 diabetes. High blood sugar, blood pressure, excess body fat around the waist, and abnormal cholesterol or triglyceride levels are included in this kind of metabolic disease that seems dangerous to human beings. The development of metabolic disease happened when the organs, such as the liver and pancreas did not function properly and triggered metabolic disease. Metabolic diseases happen at the point when irregular compound responses in the human body can modify the typical metabolic procedures. Metabolic diseases can be defined as an inherited single gene, mostly autosomal recessive. The principal classes of metabolic diseases include metabolic brain diseases, calcium metabolism disorder, acid-base imbalance, and glucose metabolism disorders. Diagnosing metabolic diseases was tedious and depending on which type of disease was involved, and currently, by using DNA tests, we can identify the disease but it takes several hours and only a professional person in charge can analyze the result. Advances in diagnosing metabolic diseases by nanoparticle immobilization establish a promising exploration area with favorable impacts on the treatment of diseases. Nanotechnology based on nanoparticle implementation was useful for the metabolic disorder diagnosis to prevent the disease from going viral to develop. Biosensor based on nanoparticles has been applied in several detections including metabolic illnesses to improve accessible analytical methods. Point-of-care (POC) sensor devices have been developed for metabolic disease and offer outcomes, quicker, simpler and at a lower cost than conventional methods. It also can be used in remote regions for metabolic diagnosis. In this chapter, different nanoparticle immobilization has been discussed to diagnose metabolic diseases by using it in clinical approach.
      4  35