Faculty of Mathematics and Natural Sciences: Recent submissions
Now showing items 841-860 of 11355
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Graf Pembagi Nol dari Ring Komutatif ℤp1q1 x ℤp2q2
(Universitas Sumatera Utara, 2023)A commutative ring R with zero-divisor Z(R), represented into the zero-divisor graph r(R) whose vertices consist of x,yeZ(R), with distinct vertices x and y adjacent if and only if xy=0. This study analyzed the pattern of ... -
Implementasi Metode Just In Time (JIT) dalam Mengefisiensi Biaya Persediaan Bahan Baku (Studi Literatur Review)
(Universitas Sumatera Utara, 2023)Inventory control is an activity that can estimate the amount of inventory accurately, with an amount that is neither less nor too large compared to needs and demand. Inventory control is carried out to obtain inventory ... -
Artificial Neural Network dalam Meramalkan Kasus Covid-19 di Indonesia Menggunakan Metode Backpropagation
(Universitas Sumatera Utara, 2023)COVID-19 cases have become a threat to the whole world, including Indonesia. The graph of cases of the spread of covid-19 in Indonesia has been getting out of control since the beginning of the first case of covid-19 in ... -
Penerapan Metode Arima dan Grey Theory dalam Meramalkan Harga Saham PT Indofood Sukses Makmur Tbk
(Universitas Sumatera Utara, 2023)Investment opportunities in the form of shares are widely known among savers and Indonesian capital market traders. Stock prices fluctuate, therefore it is important to predict them so that investors can better prepare and ... -
Pemodelan Tingkat Pengangguran Terbuka di Kabupaten /Kota Provinsi Sumatera Utara Menggunakan Metode Geographichally Weigthed Regression
(Universitas Sumatera Utara, 2023)The increase in the open jobless rate in North Sumatra Province reached 6.30 percent. Due to the distinct characteristics of each region in North Sumatra Province, the open unemployment rate problem illustrates the ... -
Pembuatan Sediaan Gel dari Ekstrak Etanol Daun Salam (Syzygium polyanthum) sebagai Penyembuh Luka Sayat
(Universitas Sumatera Utara, 2023)Bay leaf (Syzygium polyanthum) which is known to be rich in secondary metabolite compounds is known to have benefits for wound healing. Bay leaves that have been mashed are extracted with ethanol solvent until the results ... -
Potensi dan Aplikasi Bacterial Nanocellulose dari Symbiotic Culture of Bacteria and Yeast untuk Kemasan Makanan Aktif
(Universitas Sumatera Utara, 2023)Bacterial nanocellulose films produced using a green and inexpensive approach can serve as a basic material for replacement of plastic-based packaging. Active food packaging leads to extending the shelf life of food and ... -
Karakteristik Sifat Mekanis, Morfologi, dan Termal Komposit Polietilena Berdensitas Tinggi/Karet Alam Sir 10 Hasil Ekstrusi dengan Pengisi Bentonit Alam
(Universitas Sumatera Utara, 2023)Research on the mechanical, morphological and thermal characteristics of High Density Polyethylene/Natural Rubber/PP-g-MA with natural bentonite filler has been carried out. The HDPEIKA/PP-g-MA mixture was blended using ... -
Analisis Senyawa Dietilen Glikol (DEG) pada Sediaan Obat Sirup Anak Menggunakan Kromatografi Gas
(Universitas Sumatera Utara, 2023)Diethylene Glycol is a compound that has high toxicity and is often used in the preparation of children's syrup. Diethylene Glycol is generally used as a stabilizer or antifreeze agent or a follow-up ingredient in additional ... -
Modifikasi Pati Sukun (Artocarpus altilis) Menjadi Pati Ikat Silang Oksalat
(Universitas Sumatera Utara, 2023)Modification of breadfruit starch oxalic was carried out through a cross- linking reaction between breadfruit starch (Artocarpus altilis) and oxalic acid. This research was conducted in two stages, namely isolation of ... -
Impregnasi Mikroenkapsulasi Ekstrak Buah Andaliman (Zanthoxylum acanthopdium) pada Selulosa Bakteri sebagai Kemasan Makanan Aktif pada Daging Sapi
(Universitas Sumatera Utara, 2023)Beef is prone to spoilage due to bacterial growth, requiring active food packaging that can. extend storage time. Using andalimanfruit extract microencapsulated into bacterial cellulose (SB) can increase SB's ability as ... -
Isolasi Pektin Kulit Jeruk Manis (Citrus sinensis) sebagai Gelung Agent pada Sediaan Gel Moisturizer Ekstrak Kulit Pisang Kepok (Musa paradiciasa L.)
(Universitas Sumatera Utara, 2023)Pectin contained in sweet orange peel can potentially be the basic ingredient of gelling agent in preparations that are useful for reducing the impact of environmental pollution. This study aims to determine the effect ... -
Analisa Pengaruh Daya Laser terhadap Kecepatan Pertumbuhan Jamur Culvularia Sp pada Bibit Kelapa Sawit
(Universitas Sumatera Utara, 2023)This research aims to find other alternative ways to kill the culvularia sp fungus or leaf spot disease that attacks oil palm seedlings. Using a blue laser with a wavelength of 405 nm, a blue laser with a wavelength of ... -
Perancangan Sistem Ventilator Otomatis Multikanal Menggunakan Sensor Asap MQ5 Berbasis Mikrokontroler ATMEGA 8535
(Universitas Sumatera Utara, 2023)Technological progress provides many benefits for human life. One invention that provides many positive benefits is the invention of sensors. With the sensor can be made an automatic system to perform a neutralization ... -
Penjadwalan Tenaga Kerja Perawat Menggunakan Metode Fuzzy Goal Programming (Studi Kasus: RSU. Mitra Medika)
(Universitas Sumatera Utara, 2023)Mitra Medika Hospital has an inpatient room that is ready 24 hours, therefore nurses are needed who can be ready to stand guard during the morning, afternoon and night shifts. A good nurse scheduling, which meets hospital ... -
Algoritma Djikstra untuk Menentukan Rute Terpendek Objek Wisata di Kota Jambi
(Universitas Sumatera Utara, 2023)Searching for the shortest route is a search for a route from one path to another to minimize the distance on a particular interconnected path. The Djikstra algorithm is an algorithm used to determine the shortest path ... -
Penerapan Metode Fuzzy Service Quality untuk Menganalisa Kepuasan Pelayanan pada Aplikasi Satu Atap FMIPA USU Menurut Sudut Pandang Mahasiswa Sarjana Matematika
(Universitas Sumatera Utara, 2023)The fuzzy method is a method used to solve problems where the description of activities, research and assessments is subjective, uncertain and imprecise. The method used in this study is the servqual approach combined with ... -
Isolasi Pektin dari Kulit Durian (Durio zibethinus) sebagai Gelling Agent pada Masker Gel Ekstrak Biji Alpukat (Persea americana Mill.)
(Universitas Sumatera Utara, 2023)Durian skin is a waste that can be processed into several products in various fields. Durian skin has a pectin content of ±17%. In the cosmetic and food industries, pectin is used as a geller, binder, stabilizer, and ... -
Rancang Bangun Alat Monitoring Kadar Udara Bersih dan Gas Berbahaya CO, CO2, dan CH4 di dalam Ruangan Berbasis Mikrokontroler AT8535
(Universitas Sumatera Utara, 2023)In everyday life, we cannot escape the influence of harmful gases. These harmful gases such as CO, CO2 and CH4 are colorless gases so we cannot distinguish them from oxygen, the air we need. Odorless CO gas is very dangerous ... -
Pelapisan Tembaga Menggunakan Titanium Dioksida dengan Metode Electrophoretic Deposition untuk Aplikasi Heat Pipe
(Universitas Sumatera Utara, 2023)This study uses the Electrophoretic Deposition method with the synthesis of titanium dioxide to coat copper substrates in suspension with variations in deposition time for 5, 10, 20, and 30 minutes. There were also electrode ...