Browsing Department of Chemistry by Type "Disertasi Doktor"
Now showing items 1-20 of 97
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Adhesi Penguat Serbuk PULP Tandan Kosong Sawit Teresterifikasi dengan Matriks Poletilena
(Universitas Sumatera Utara, 2009)Pulp Tandan kosong sawit (TKS) yang berasal dari limbah tandan kosong sawit mengandung lignoselulosa yang cukup tinggi dapat dimanfaatkan sebagai penguat komposit Polietilena (PE). Namun adhesi antara pulp TKS di dalam ... -
Analisa Degradasi Oksidasi Karet Alam Siklis (Resiprene-35) Akibat Penyimpanan, Pemanasan dan Sinar Ultraviolet
(Universitas Sumatera Utara, 2016)Research on analysis oxidative degradation and stabilization of cyclic natural rubber (resipren-35) using wax commercial antioxidants, BHT, and Wingstay has been conducted. Properties of physics as a result of treatment ... -
Analisis Biomolekuler dan Sifat Patogenesitas Ganoderma Terhadap Penyakit Busuk Pangkal Batang pada Tanaman Kelapa Sawit (Elaeis Guinensis)
(Universitas Sumatera Utara, 2008)Biomolekuler analysis and photogenesity test of Ganoderma, causal agent of basal stem rot (BSR) disease on oil palm (Elaeis Guinensis) have been carried out. The identification and characterization were preceded by ... -
Analisis Cannabinoid dari Rambut Pengguna Narkotika Jenis Ganja (Cannabis sativa L.) Menggunakan Teknik GCMS
(Universitas Sumatera Utara, 2016)Analysis of cannabinoids in hair of marijuana (Cannabis saliva L) can be done using samples of urine, blood and hair. This study used hair because the inspection can be performed after 72 hours of use by the user, this ... -
Analisis Kadar Metamfetamin dalam Rambut Pengguna Sabu-Sabu Menggunakan Metode Kolom Ekstraksi dengan Nanobentonit Alam Sebagai Adsorben dan Gas Chromatography Mass Spectrometry (GCMS)
(Universitas Sumatera Utara, 2020)Analisis metamfetamin pada rambut pengguna narkotika jenis sabu- sabu dapat dilakukan dengan menggunakan sampel urine, darah dan rambut. Penelitian ini menggunakan sampel rambut karena pemeriksaaan dapat dilakukan setelah ... -
Asap Cair Cangkang Kelapa Sawit sebagai Pengawet dan Jaringan Semi Interpenetrasi Polimer pada Kayu Kelapa Sawit
(Universitas Sumatera Utara, 2007)This research aim to improve the properties of palm oil wood by used liquid smoke from palm shell pyrolysis and formed semi-interpenetrating polymer network by used toluene diisosianat as active monomer with in situ ... -
Bentonit Alam Terpilar sebagai Material Katalis/ Co-Katalis Pembuatan Gas Hidrogen dan Oksigen dari Air
(Universitas Sumatera Utara, 2007)Bentonite obtanained from Kecamatan Padang Tualang, Kabupaten Langkat was a Na–bentonite. This bentonite was saturated with 1 M NaCl solution for 1 day to enrich the Na–bentonite. Then the Na–bentonite was activated by ... -
Bioaktivitas Fraksi Etil Asetat dan Aktivitas Antidiabetes Senyawa Fenolik dari Daun Sirih (Piper betle L.)
(Universitas Sumatera Utara, 2019)This research studied the bioactivities of ethyl acetate fraction of methanol extract of betel leaves and antidiabetic activities of phenolic compounds from betel leaves. The extraction was done by macerating the betel ... -
Campuran Limbah Padat Organik dan Anorganik Pulp Sebagai Bahan Pengisi Mikrokomposit Termoplastik Poliolefin
(Universitas Sumatera Utara, 2010)This research is aimed to investigate pulp solid waste (PSW) potency as filler in polipropylene mikrocomposites. PP/LPP microcomposites are made by adding PSW particle come from waste pulp process PT. Toba Pulp Lestari ... -
Dampak Medan Elektrik Berpulsa Tegangan Tinggi terhadap Membran Selluler
(Universitas Sumatera Utara, 2009)This research used sphere-gap as distributor of electric charge, to replace the expensive transistor to make a High Voltage Pulsed Electric Fields (HVPEF) generating and to observe the HVPEF ... -
Ekstraksi dan Imobilisasi Senyawa Aktif Berkhasiat Antibakteri dari Ekstrak Metanol Daun Pirdot (Saurauia vulcani, Korth) dalam Hidrogel Semi Interpretating Polimer Network
(Universitas Sumatera Utara, 2022)Research on the extraction and immobilization of antibacterial active compounds in methanol extract of pirdot leaves in semi IPN hydrogel has been carried out. This study aimed to analyze the antibacterial active compounds ... -
Enkapsulasi Ekstrak Daun Kari (Murraya koenigii ) Menggunakan Gelatin dari Tulang Sapi
(Universitas Sumatera Utara, 2019)Research has been carried out on the ability of gelatin coating: arab gum in maintaining the compound components of core materials with different variations of 4: 1 through spray drying method and its application to ... -
Fungsionalisasi Grafena dari Grafit Batubara Sawahlunto dengan Sentrimonium Bromida Sebagai Bahan Pengisi Nanokomposit pada Matriks Karet Alam Siklik
(Universitas Sumatera Utara, 2019)Coal is the most abundant source of energy and fuel is widely used throughout the world. However, its structural characteristics create the perception that coal is only useful for being produced as energy through combustion. ... -
Fungsionalisasi Polipropilena Terdegradasi Menggunakan Benzoil Peroksida, Anhidrida Maleat dan Divinil Benzena sebagai Bahan Perekat Papan Partikel Kayu Kelapa Sawit
(Universitas Sumatera Utara, 2011)Research about use of maleic anhydride – graft – degradated polypropylene (PPd-g-MA), benzoyl peroxide and divinyl benzene as a palm oil trunk particleboard adhesive have been done. The research have been done in three ... -
Garam-Garam Logam Alkali Tanah Silikat Nano Pori Sebagai Adsorben Asam Lemak Bebas dari Minyak Kelapa Sawit Kasar
(Universitas Sumatera Utara, 2017)Free fatty acids (FFA) from Crude Palm Oil (CPO) have been adsorbed by alkaline earth metal silicate (M-silicate : M = Mg, Ca, Sr and Ba) adsorbents in ethanol using batch method. The adsorbents were prepared from the ... -
Hidrogel Interpenetrating Polimer Network dari Selulosa Bakteri Air Kelapa yang Disuplementasi Ekstrak Kunyit (Curcuma Longa Linn), Bidara (Ziziphus Mauritiana) dan Pegagan (Centella Asiatica L. Urban), dan Potensinya Sebagai Obat Luka
(Universitas Sumatera Utara, 2021)This research aims to form a natural polymer-based IPN hydrogel formula which has potential as a wound medicine. The natural polymer used is bacterial cellulose which has higher purity than plant cellulose, and to maximize ... -
Hidrogel Karboksimetil Selulosa-Asam Sitrat-Polivinil Alkohol yang Diimobilisasi Zat Ekstraktif Daun Gaharu sebagai Material Sediaan Obat Luka
(Universitas Sumatera Utara, 2022)Agarwood twig and leaves are a by-product of agarwood plantations can be developed into medicinal raw materials. The purpose of this study was to determine the Carboximetyl Cellulose (CMC) potential of the agarwood twig ... -
Identifikasi Cepat Minyak Atsiri Berdasarkan Pengamatan Spektrum Fluoresensi
(Universitas Sumatera Utara, 2010)Have been rapid identification to some oil atsiri that is Olive Oil , VCO ( virgin coconut oil ), minyak sereh and minyak nilam by method analyse spectrum fluorescence. Spectral properties of fluorescence that is wavelength ... -
Inkorporasi Asam Askorbat pada Pembentukan Selulosa Bakteri dengan Menggunakan Acetobacter Xylinum
(Universitas Sumatera Utara, 2010)Incorporation of ascorbic acid at forming bacterial cellulose by using Acetobacter xylinum. Coconut water as a substance, use for making bacterial cellulose thrugh phosphate pentose pathway with juice Acetobacter xylinum ... -
Interaksi Serat Limbah Industri Pulp dengan Serat Nanas, Pisang dan Rami pada Pembuatan Karton
(Universitas Sumatera Utara, 2010)Paperboard, chipboard and liner carton that fulfil the requirement of SNI have been made from the mixture of either pineapple leave pulp, banana stem pulp or ramie pulp with the sludge of pulp industry produced by Toba ...