Department of Chemistry: Recent submissions
Now showing items 141-160 of 3020
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Penentuan Kadar Logam pada Road Dust Berdasarkan Perbedaan Ukuran Partikel dari Jalan Dr Mansyur
(Universitas Sumatera Utara, 2024)This research aims to determine the concentration of heavy metals in road dust sediment with specific particle sizes at the Dr. Mansyur street location. The study was conducted by sieving road dust into particle sizes ... -
Peningkatan Aktivitas Fotokatalitik Zno Termodifikasi N-Doped Carbon Dots Biji Asam Jawa (Tamarindus Indica L.) dalam Mendegradasi Metilen Biru
(Universitas Sumatera Utara, 2024)The rapid development of the textile industry sector is an environmental problem that causes pollution by liquid dye waste such as methylene blue (MB) dye. Therefore, effective efforts are needed to reduce MB levels, namely ... -
Isolasi dan Identifikasi Golongan Senyawa Flavonoida dari Kulit Batang PohonTrembesi (Samanea Saman (Jacq.) Merr)
(Universitas Sumatera Utara, 2024)Isolation and identification of flavonoid compound groups from the bark of rain tree (samanea saman (jacq.) Merr) had been carried out through the stages of maceration extraction using methanol solvent. Extraction was ... -
Isolasi dan Identifikasi Golongan Senyawa Flavonoida dari Kulit Batang Landoyung (Litsea Cubeba (Lour.) Pers.)
(Universitas Sumatera Utara, 2024)Isolation and identification of flavonoid compound groups from landoyung bark (Litsea cubeba (Lour.) Pers.) had been carried out through maceration extraction stages with methanol solvent. The methanol extract was concentrated ... -
Isolasi dan Identifikasi Golongan Senyawa Flavonoida dari Kulit Batang Mahang Damar (Macaranga Triloba (Thunb.) Mull.Arg.)
(Universitas Sumatera Utara, 2024)Isolation and identification of flavonoid compounds from stem bark of mahang damar (Macaranga triloba (Thunb.) Mull.Arg.) had been carried out. Isolation was carried out through maceration extraction using methanol and was ... -
Isolasi dan Identifikasi Golongan Senyawa Flavonoida dari Daun Mahang Biru (Macaranga Heynei I. M. Johnst)
(Universitas Sumatera Utara, 2024)Isolation and identification of the flavonoid compound from mahang biru (Macaranga heynei I. M. Johnst.) leaves had been done by maceration extraction technique with methanol solvent. Methanol solid extract was re extracted ... -
Isolasi dan Identifikasi Golongan Senyawa Flavonoida dari Kulit Batang Glodokan (Polyalthia longifolia (Sonn.) Benth & Hook. F Ex Thwaites)
(Universitas Sumatera Utara, 2024)Isolation and identification of flavonoids compound from the bark of glodokan (Polyalthia longifolia (Sonn.) Benth & Hook.F ex Thwaites) had been carried out through the maceration extraction stage used methanol solvent. ... -
Pengaruh Variasi Massa Katalis Coal Fly Ash dalam Proses Perengkahan Katalitik Minyak Jelantah Menjadi Bahan Bakar Hidrokarbon
(Universitas Sumatera Utara, 2024)Petroleum reserves in the world are dwindling due to a significant increase in population and fossil oil which has non-renewable properties so that the development of environmentally friendly alternative fuels is needed ... -
Isolasi dan Identifikasi Golongan Senyawa Flavonoida dari Daun Turi Merah (Sesbania Grandiflora (L.) Poir)
(Universitas Sumatera Utara, 2024)Turi merah (Sesbania grandiflora (L.) Poir) is a fern plant that is widely used by the general public for natural treatment, such as nausea, diarrhea, strep throat and others. The isolation and identification of flavonoid ... -
Karakterisasi Paduan EPDM/NR SIR-20 dengan Pengisi Serbuk Cangkang Tiram (Crassostrea gigas) sebagai Peredam Benturan Pintu Kendaraan (Weather Strip)
(Universitas Sumatera Utara, 2024)Research on composites from the EPDM/NR SIR-20 alloy with the addition of oyster shell powder (Crassostrea gigas) as a filler material which is applied as a vehicle door impact absorber (weather strip). Making weather ... -
Karakteristik Sensor Berbasis Kitosan/Tembaga II Oksida (CuO) dalam Mendeteksi Konsentrasi Aseton dengan Amperometri
(Universitas Sumatera Utara, 2024)Research has been done on the characteristics of sensors based on chitosan/Copper II Oxide (CuO) in detecting acetone concentrations using the amperometric method. The effect of copper II oxide addition on chitosan film ... -
Sensitivitas Elektroda Termodifikasi Kitosan/Grafena Oksida Tereduksi/Serium Oksida Dalam Mendeteksi Konsentrasi Epinefrin
(Universitas Sumatera Utara, 2024)In this research, chitosan/reduced graphene oxide (rGO)/cerium oxide (CeO2) modified electrodes have been successful in detecting epinephrine using the cyclic voltammetry method. The addition of cerium oxide is considered ... -
Karakterisasi Komposit dari Paduan EPDM/NR SIR-20 dengan Pengisi Serbuk Tanah Liat (Clay) sebagai Peredam Benturan Pintu Kendaraan (Weather Strip)
(Universitas Sumatera Utara, 2024)Composite research of EPDM/NR SIR-20 alloy with the addition of clay powder as a filler used as a car door impact absorber (weather strip). The weather strip was prepared by mixing SIR-20 natural rubber with EPDM synthetic ... -
Modifikasi Campuran Aspal Limbah Plastik Bekas Polipropilena Melalui Uji Marshal
(Universitas Sumatera Utara, 2024)Plastic waste is one source of environmental pollution in the world. The use of used plastic waste as a mixture for asphalt in road construction has become an interesting research focus in the field of chemistry. The use ... -
Pembuatan dan Karakterisasi Bioplastik Pati Biji Durian (Durio Zibethinus) dengan CMC, Kitosan dan Plastisizer Gliserol dengan Penambhan TiO2 sebagai Filler
(Universitas Sumatera Utara, 2024)The manufacture of durian seed starch bioplastics CMC, chitosan and glycerol with the addition of TiO2 as filler and the manufacture of durian seed starch bioplastics chitosan and glycerol with the addition of TiO2 as ... -
Sintesis Natrium Pati Sulfat dari Pati Ubi Kayu (Manihot esculenta) Menggunakan Asam Sulfat dalam Pelarut Etanol
(Universitas Sumatera Utara, 2024)Sodium starch sulfate was obtained from cassava starch (Manihot esculenta), which was synthesized through the sulfation reaction using 98% H2SO4 in ethanol solvent. This research was conducted in two stages, namely, isolation ... -
Sensitivitas Elektroda Berbasis Grafena Oksida Tereduksi/Kitosan/Titanium Dioksida Dalam Mendeteksi Kolesterol Dengan Siklik Voltametri
(Universitas Sumatera Utara, 2024)In this research, chitosan/reduced graphene oxide(rGO)/titanium dioxide (TiO2) modified electrodes have been successful in detecting cholesterol using the cyclic voltammetric method. The addition of titanium dioxide is ... -
Sensitivitas Elektroda Termodifikasi Kitosan/Grafena Oksida Tereduksi/Fe3O4 dalam Mendeteksi Kolesterol
(Universitas Sumatera Utara, 2024)In this research, the chitosan/rGO/Fe3O4 modified electrode has been successfully carried out in detecting cholesterol using the cyclic voltammetry method. The chitosan/rGO/Fe3O4 electrode was fabricated using the ... -
Pengaruh Variasi Penambahan Zat Aditif TiO2/ZnO dan Lilin Lebah (Beeswax) Terhadap Karakteristik Bioplastik Alginat-CMC-Sorbitol
(Universitas Sumatera Utara, 2024)The manufacture of alginate-CMC-sorbitol bioplastics and the manufacture of alginate-CMC-sorbitol-Beeswax bioplastics (Beeswax) with the manufacture of alginate-CMC-sorbitol bioplastics with TiO2/ZnO additives has been ... -
Sintesis Dan Karakterisasi Komposit Termoplastik Berbasis Lignin Tergrafting Polistirena Dengan Metode Polimerisasi Radikal Transfer Atom
(Universitas Sumatera Utara, 2024)This research examines the synthesis process and characterization of lignin-based thermoplastic composites grafted with polystyrene. This research was carried out to combine the two properties of lignin and polystyrene ...