Pusat Pengajian Sains Kajihayat - Tesis

Browse

Recent Submissions

Now showing 1 - 5 of 985
  • No Thumbnail Available
    Publication
    Studies On The Culture Of The Estuary Grouper, Epinephelus Salmoides Maxwell (Pisces, Serranidae), In Floating Net-Cages
    (1979-10)
    Teng, Seng Keh
    In the present investigation, certain aspects of the food and feeding, Ilutritional requirements and stocking densities of the estuary grouper (EpinepheZus saZmoides Maxwell) were studied In floating net-cages. The results obtained were further assimilated to develop culture techniques for optimizing commercial production of the fish.
  • No Thumbnail Available
    Publication
    Cytotoxicity And Cell Deatl-I Mechanisms Of Epipremnum Pinna Tum (L.) Engl. Extracts In T-47d, A Breast Carcinoma Cell Line
    (2003-05)
    Tan, Mei Lan
    In this study, Epipremnum pinnatum (L.) Engl. extracts were shown to exhibit remarkable inhibition against the growth of T-47D, a breast carcinoma cell line. The hexane extract was the most potent (EC5o at 2.870 ug/ml) as compared to the chloroform and methanol extracts (EC5o at 5.590 ug/ml and 6.470 ug/ml, respectively). However, cell death mechanisms elicited by these three extracts were somewhat nonsimilar.
  • Thumbnail Image
    Publication
    Studies On The Mosquito Fauna Of Kerian District With Emphasis On The Mangrove Swamp Ecotype
    (1994-01)
    Ahmad, Abu Hassan
    A survey on the mosqui to fauna of Kerian district and its adjacent area of Bandar Baharu district was taken from August 1986 to December 1990. A total of 157 species of mosquitoes belonging to 17 genera were collected using several methods. Some of the mosquitoes were found to breed only in certain specific ecological zones while others were distributed over a wider area. Aedes amesii, and Uranotaenia latera7is were confined to Cx. sitiens the mangrove swamps. The holes in the trees of the mangrove swamps were the breeding habitat for Ae. amesii. Cx. sitiens breeds in the brackish water pools and water canals that run along the bunds that separate the mangrove swamps from the land. Ur. latera7is larvae were found breeding in the crab holes in the mangrove swamps. Adults rest in these crab holes during the day. The nipah palm axils were used by several species of Aedes and Culex as their breeding habitats.
  • Thumbnail Image
    Publication
    Production And Characterization Of An Antibiotically Active Compound(S) From A Local Marine Isolate, Bacillus Pulvifaciens Sbm-71
    (2022-04)
    Sabah Zrieq, Rafat Moh'd
    One hundred and eighty bacterial isolates were obtained from marine samples collected from four different sites around Penang Island. A total of 18.3 % of the isolates secreted extracellular compounds which exhibited antimicrobial activity against at least one of the test microorganisms. The isolate SBm-71 which exhibited the highest antimicrobial activity was selected as a potential producer with a maximum antimicrobial activity of 21.5 U/ml. Isolate SBm-71 which was identified as Bacillus pulvifaciens secreted only extracellular antimicrobial compound(s).
  • Thumbnail Image
    Publication
    Micropropagation Of Fig (Ficus Carica) Cv.japanese Btm 6
    (2024-09)
    Lee, Yong Jun
    Ficus carica L., commonly known as the fig tree and belonging to the Moraceae family, is cultivated in subtropical and Mediterranean regions worldwide. This fruit-bearing tree is rich in natural fibre, minerals, and vitamins. However, conventional propagation methods, such as grafting, hardwood cutting, and air layering, are inefficient for establishing viable plant stocks in Malaysia. The primary factor to this inefficiency is the suboptimal rooting efficiency associated with these conventional propagation techniques. However, experiments have shown that vermicast can enhance root induction, improving the survival rate of plantlets in these methods. Therefore, vermicast can be as an option to help with root induction."Vermicast, a byproduct of organic matter decomposition by earthworms, is known for its advantageous impact on plant growth in agriculture. This study aims to establish methods for the micropropagation of Ficus carica cv. Japanese BTM 6 and to evaluate the regeneration effects of vermicast solution on in vitro shoot cultures. Sterile nodal segment explants were subjected to treatments involving various types and concentrations of organic additives, including potato, banana, and coconut water. The induced shoots were further treated with different combinations and concentrations of cytokinins (meta-topolin, BAP, 2ip, zeatin, and TDZ) and auxins (IAA, IBA, NAA) to promote shoot multiplication. Additionally, the induced shoots were assessed for their response to varying concentrations of vermicast solution (ranging from 5% to 30%) in terms of in vitro shoot and root regeneration. Plantlets with roots were acclimatized with different potting mix and vermicast as the acclimazation media with and without vermicast solution during watering.