Doctoral Dissertations
Doctoral Dissertations
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Now showing items 41-60 of 102
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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 ... -
Isolasi dan Penentuan Struktur Senyawa Steroid dari Akar Tumbuhan Cendana (Santalum album Linn)
(Universitas Sumatera Utara, 2007)Santalum album Linn. is one of the species belonging to the Santalaceae family. It is used as a traditional medicine for diabetes mellitus and is known to contain sesquiterpene compounds. This study was aimed to isolate ... -
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 ... -
Menghilangkan Pengaruh Kopling Elektromagnetik dan Topografi pada data Pengkutuban Imbas yang diambil Dengan Sensor Dipole-Dipole Menggunakan Metode Bayangan Komplek Untuk Mempermudah Interpretasi Data Lapangan
(Universitas Sumatera Utara, 2009)Using the method of complex images, the x and z components of the Hertz vector potential generated by a dipole that lies on the earth surface are derived. From this, the approximate solution of the Mutual ... -
Modifikasi Pati Sagu Batang Sawit Sebagai Matriks Adesif Nanokomposit Dengan Nanokristal Selulosa dan Nanozeolit Alam Sarulla Sumatera Utara
(Universitas Sumatera Utara, 2016)The result of this research is nanocomposite strach – based adhesive for wood which is environmentally friendly by using palm trunks as a matrix starch that is modified with borax and excipients nanocrystalline cellulose ... -
Pemanfaatan Gliserol dan Turunannya Sebagai Plasticizer pada Edible Film Gelatin yang Diinkorporasi Dengan Minyak Atsiri Kulit Kayu Manis (Cinnamomum Burmanii) Sebagai Antimikroba
(Universitas Sumatera Utara, 2012)In this reseach has been conducted by making gelatin edible films incorporation with cinnamon bark essential oil with the plasticizer glycerol and glyceryl monooleate. Products are characterized by SEM, FT-IR, film thickness, ... -
Karakterisasi Edible Film yang Bersifat Antioksidan dan Antimikroba Dari Galaktomanan Biji Aren (Arenga Pinnata) yang Diinkorporasi Dengan Minyak Atsiri Daun Kemangi (Ocimum Basilicum L.)
(Universitas Sumatera Utara, 2012)Characterization of edible film from galactomannan was incorporated with basil essential oil has been done. Edible films which obtained from galactomannan were GK1, GK2, GK3, GK4 and GK5, all of they have antioxidants ... -
Peningkatan Performansi Membran Selulosa Asetat Dengan Penambahan Zeolit Alam Ujong Pancu, Kabupaten Aceh Besar pada Pemisahan Campuran Etanol-Air Secara Pervaporasi
(Universitas Sumatera Utara, 2012)The aim of this research is to study the influence of modification of cellulose acetate membranes by additing natural zeolite of Ujong Pancu towards the membrane performances (permeation flux and selectivity of the membrane) ... -
Isolasi dan Elusidasi Struktur Kimia Senyawa Bioaktif Anti Kanker Dari Buah Tumbuhan Bawang Hutan (Scorodocarpus Borneensis Becc)
(Universitas Sumatera Utara, 2013)Forestry onion (Scrodocampus borneensis Becc) is growth in east kalimantan and riau which is a community used as diare medicine because of alkaloid compounds. That research was doing isolation and getting chemical structure ... -
Isolasi dan Penentuan Struktur Senyawa Steroid Dari Daun Tumbuhan Kulu (Artocarpus Camansi: Sukun Berbiji) yang Bersifat Antidiabetes
(Universitas Sumatera Utara, 2013)Research on plant leaves Artocarpus camansi (kulu) was aimed to find a chemical compound with antidiabetic activity in male Swiss Webster mice. The study began by preparing hexane, ethyl acetate and methanol extracts of ... -
Isolasi dan Elusidasi Struktur Kimia Senyawa Alkaloida dari Buah Ranti Hitam (Solanum Blumei Nees Ex Blume) yang Bersifat Anti Kanker
(Universitas Sumatera Utara, 2015)Ranti hitam plant (Solanum blumei Nees ex Blume ) is one species of the Solanaceae family, commonly found in the area Karo and Dairi, North Sumatera, Indonesia. Traditionally S. blumei used as pain medications, fever, ... -
Paduan Termoplastik Elastomer (Polipropilena - Karet SIR 10 dan EPDM) dengan Bahan Pengisi PULP Tandan Kosong Kelapa Sawit sebagai Material Peredam Suara
(Universitas Sumatera Utara, 2014)Blending of thermoplastic elastomers (PP- SIR 10 rubber and PP-EPDM rubber) in dynamic vulcanization has been investigated by using DCP (Dicumyl peroxide) as initiator and DVB (Divinyl benzene) as a cross-linker, with ... -
Studi Reaksi Interesterifikasi antara RBDPS dengan Minyak Kelapa atau Minyak Kemiri Menjadi CBS atau Margarin yang Mengandung Asam Lemak Omega-3 dan Omega-6
(Universitas Sumatera Utara, 2006)Fraksinasi Dari RBDPO (Rafined Bleazed Deodorized Palm Oil) menghasilkan RBDPOlein (Rafined Bleazed Deodorized Palm Olein)berbentuk cair dan RBDPStearin (RafinedBleazed Deodorized Palm Stearin) yang berbentuk padat dalam ... -
Modifikasi In-Situ dan Karakterisasi Pati Termoplastik Sagu (Metroxylon Sagu) dengan Difenilmetana Diisosianat dan Minyak Jarak
(Universitas Sumatera Utara, 2015)In this research, the synthesis of sago starch thermoplastics (Thermoplastic Starch Modified/TPS) in- situ was conducted by reacting plasticized starch with diphenylmethane diisocyanate (MDI) and castor oil simultaneously ... -
Pembuatan Scaffold dari Kitosan Belangkas (Tachypleus Gigas) untuk Menumbuhkan Sel Fibroblast pada Rekayasa Jaringan
(Universitas Sumatera Utara, 2013)The aim of the research is to determine the optimum of composition between chitosan to collagen at making process of scaffold chitosan/collagen scaffold as a matrix for growing of fibroblast cell. Chitosan 90,2% DD is ... -
Pengaruh Abu Sekam Padi dan Abu Boiler Kelapa Sawit Sebagai Campuran terhadap Kekuatan Beton
(Universitas Sumatera Utara, 2014)This study aimed to obtain the ideal composition of the addition of rice husk ash in concrete and the addition of palm oil boiler ash in concrete, to improve the quality of concrete through the addition of rice husk ash ... -
Isolasi dan Elusidasi Struktur Kimia Senyawa Flavonoid sebagai Inhibitor Enzim Α-Glukosidase dari Ekstrak Etanol Kulit Batang Raru (Vatica pauciflora Blume)
(Universitas Sumatera Utara, 2014)Raru (Vatica pauciflora Blume) is a wild plant grows enormously in Central Tapanuli forest area. Barks of this plant are utilized for antidiabetic medicine by boiling and consuming the decoction. The aim of this study ... -
Transformasi Asam Oleat, Risinoleat dan Linoleat Menjadi Dimetil Ester dengan KATALIS PdCl2 dan Kokatalis CuCl2 untuk Bahan Aditif Biosolar
(Universitas Sumatera Utara, 2011)Crude Palm oil contains various chemicals. Triglycride is a major komponen that has high potensial for many purposes. Triglycride was transesterified using KOH as a catalyst to give fatty methyl ester (FAME) along with ... -
Studi dan Simulasi Permodelan Laju Difusi Aditif Asam Stearat dan Asam Palmitat dalam zat Padat Polimer Polivinil Klorida
(Universitas Sumatera Utara, 2010)This dissertation presents the experiment study combined with modeling and simulation to find the diffusion flux of the material contained additive and nonadditive. Two specimens of PVC films contained additive and ... -
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 ...
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