Faculty of Mathematics and Natural Sciences: Recent submissions
Now showing items 541-560 of 11437
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Optimalisasi Ekstrak Daun Sirih Cina (Peperomia Pellucida L.) Terhadap Histologi Paru-Paru Mencit (Mus Musculus L.) Yang Dipapar Asap Rokok
(Universitas Sumatera Utara, 2025)Cigarette smoke contains various harmful substances, including free radicals that smoke can lead to oxidative stress, damaging lung cells, increasing the risk of inflammation, and impairing of the lung function. The use ... -
Pola Pertumbuhan dan Faktor Kondisi Ikan Iblis Merah (Amphilopus labiatus) di Perairan Danau Toba Sumatera Utara
(Universitas Sumatera Utara, 2025)The red devil fish (Amphilophus labiatus) is a type of predatory fish that also invasive. It is posing a threat to the endemic fish and other economically important fish species in a body of water. The presence of the red ... -
Potensi Jamur Nematofagus (Paecilomyces fumosoroseus) dan Bakteri Penambat Nitrogen (Azotobacter sp.) Dalam Mengurangi Infeksi Meloidogyne hapla Pada Tanaman Tomat (Solanum lycopersicum L.)
(Universitas Sumatera Utara, 2025)Tomato plants (Solanum lycopersicum L.) are horticultural crop that often suffer yield losses due to the root-knot nematode attacks. This study aims to determine the ability of nematophagous fungi (Paecilomyces fumosoroseus) ... -
Potensi Bakteri Penghasil Biosurfaktan Dari Limbah Cair Industri Kelapa Sawit Dalam Mendegradasi Minyak Goreng Bekas
(Universitas Sumatera Utara, 2025)The increasing need for cooking oil as a food ingredient has resulted in an increase in the amount of used cooking oil produced, causing pollution which has negative effects on health and the environment. This research ... -
Potensi Jamur dari Limbah Detergen dalam Mendegradasi Linear Alkylbenzene Sulfonate
(Universitas Sumatera Utara, 2025)Contamination of detergent containing linear alkylbenzene sulfonate (LAS) waste could occur due to the absence of a standard system regarding waste management, especially from laundry businesses. This research aims to ... -
Analisis Regresi Logistik Biner pada Penyakit Polycystic Ovary Syndrome (PCOS)
(Universitas Sumatera Utara, 2024)Binary logistic regression is a statistical analysis technique that is useful for analyzing the relationship between independent variables and dependent variables that are binary. In the health field, binary logistic ... -
Penerapan Metode Fuzzy Dematel untuk Menentukan Kriteria Terbaik Yang Mempengaruhi Kepuasan Karyawan (Studi Kasus : Pt. Modern Plasindo Mutiara)
(Universitas Sumatera Utara, 2024)The level of employee satisfaction is a key factor in the effective management of human resources, as it can have a significant impact on company productivity. Consequently, it is incumbent upon a company to identify and ... -
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 ... -
Karakterisasi Termoplastik Polipropilena (PP) dengan Filler Nanosilika Abu Boiler Kelapa Sawit (ABKS) yang Disintesis Menggunakan Alat Refluks
(Universitas Sumatera Utara, 2024)The production of PP thermoplastic with palm oil boiler ash nanosilica filler synthesized using the reflux device has been carried out. The synthesis of palm oil boiler ash nanosilica (ABKS) was carried out with 7M HCl and ... -
Kajian Model Chen dan Model Lee pada Metode Fuzzy Time Series serta Peramalan pada Produksi Crude Palm Oil (CPO)
(Universitas Sumatera Utara, 2024)This study aims to examine two forecasting models, namely the Chen model and the Lee model, applied to the Fuzzy Time Series method in predicting the production of crude palm oil (CPO) in Riau Province. The data used is ... -
Sistem Monitoring Kualitas Udara pada Ruangan Belajar Berbasis Sensor MG811, DHT11, Dan LDR Menggunakan Platform IoT
(Universitas Sumatera Utara, 2024)Climate change and environmental pollution are global issues that have a significant impact on human health. Not only outdoor air quality, but also indoor air quality and lighting have an important role in supporting health, ... -
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 ... -
Sistem Kontrol Generator Termoelektrik dalam Konversi Energi Panas dari Kondensor Pirolisis Menjadi Energi Listrik dengan Metode Proportional Integral Derivative
(Universitas Sumatera Utara, 2024)This study utilizes waste heat from the pyrolysis condenser to convert it into electrical energy using the Peltier TEC1-1706 module. The generated heat energy is transformed into electricity, which is then measured using ... -
Pemanfaatan Cesium-137 pada Uji Homogenitas Dosis dan sebagai Sumber Standar Kalibrasi Alat Ukur Radiasi Dosimetri Radiation Detector Bosean Fs-600
(Universitas Sumatera Utara, 2024)A study on the utilization of Cesium-137 as a standard calibration source for the BOSEAN FS-600 Radiation Detector has been conducted. The research aimed to evaluate the stability of the dosimeter system, determine the ... -
Pembuatan dan Karakterisasi Bioplastik Pati Biji Durian dengan Penambahan Filler Serat Kulit Jagung Menggunakan Plasticizer Gliserol
(Universitas Sumatera Utara, 2024)Research has been conducted on bioplastics using durian seed starch, chitosan, corn Research has been conducted on bioplastics using durian seed starch, chitosan, corn husk fiber, glycerol plasticizer, and 2% acetic ... -
Sistem Monitoring Pembangkit Listrik Alternatif Bertenaga Baterai dan Belt Motor DC Berbasis Internet of Things (Iot)
(Universitas Sumatera Utara, 2024)Battery-powered alternative power plant and DC motor and alternator as a source of electrical voltage used as charging 12 Volt Battery. This research aims to utilize technological advances and produce an Internet of ... -
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 ... -
Pembuatan Plastik Biodegradable Menggunakan Nanoserat Selulosa Tongkol Jagung dengan Plasticizer Gliserol
(Universitas Sumatera Utara, 2024)Research has been conducted on the manufacture of biodegradable plastics using corn cob cellulose nanofibers with glycerol plasticizers. This study aims to determine the effect of the comparison of the composition of ...