Faculty of Mathematics and Natural Sciences: Recent submissions
Now showing items 981-1000 of 11354
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Sintesis Metil Ester Asam Lemak dari Minyak Kelapa Sawit pada Variasi Rasio Molar dan Berat Katalis Abu Kulit Durian Menggunakan Pendispersi Homogen
(Universitas Sumatera Utara, 2023)The synthesis of fatty acid methyl esters from palm oil has been performed through a transesterification reaction using durian peel ash as a heterogeneous catalyst. This research was conducted to determine the maximum ... -
Pembuatan Dan Karakterisasi Sampel Beton Polimer Berbahan Dasar Serat Pelepah Kelapa Sawit (Elaeis) dan Serbuk Kayu dengan Perekat Resin Epoxy
(Universitas Sumatera Utara, 2023)The research has been done on manufacturing of polymer concrete which has made from sand, sawdust, waste of palm frond fiber(elaeis) and epoxy resin. Manufacture of sample was made by sieving sand and sawdust using a 100 ... -
Analisis Kualitas Pelayanan Kesehatan Pasien Rawat Jalan di RSU Royal Prima Medan dengan Menggunakan Metode Importance Performance Analysis (IPA)
(Universitas Sumatera Utara, 2023)The Importance Performance Analysis (IPA) method is the method used in this research to measure the relationship between consumer perceptions and priorities for improving product/service quality, known as the analysis ... -
Analisis Model Antrian dan Penerapannya dalam Optimisasi Pelayanan Pasien BPJS Centre Murni Teguh Memorial Hospital
(Universitas Sumatera Utara, 2023)Queueing is a common daily phenomenon, as happened in the registration counter of BPJS Centre Murni Teguh Memorial Hospital. The queue is quiet long, especially at 08.00 – 11.00 WIB. In service operations, the queue length ... -
Studi Pembuatan Bahan Bakar Gasohol E-85
(Universitas Sumatera Utara, 2023)This research has beendone by adding Calcium Oxide (CaO) as an azeotropic point breaker of ethanol-water. The Calcium Oxide used was analyzed with SEM-EDX which, showed that the constituent atoms of Calcium Oxide consisted ... -
Pengaruh Ekstrak Metanol Buah Andaliman (Zanthoxylum Acanthopodium DC.) yang Berpotensi Sebagai Antifertilitas Terhadap Histomorfometri Jantung Mencit
(2023)The use of antifertility drugs or effective contraceptives should be without risk of failure, have few side effects and are easy to obtain. Andaliman (Z. acanthopodium) can be used as an herbal medicine for antifertility ... -
Efek Ekstrak Kulit Durian (Durio Zibethinus Murr.) Terhadap Gambaran Morfologi dan Histologi Limpa Tikus (Rattus Norvegicus L.) yang Diinduksi 7, 12-Dimetilbenz-[A] Antrasen (DMBA)
(Universitas Sumatera Utara, 2023)Durian peel (Durio zibethinus Murr.) contains compounds that have potential as antioxidants. Research on the effect of durian peel extract (Durio zibethinus Murr.) on the morphological and histological images of the spleen ... -
Pengaruh Kitosan Terhadap Pertumbuhan Protocorm-Like Bodies Dendrobium Sp.
(Universitas Sumatera Utara, 2023)Plant tissue culture is one of several techniques use to multiply orchids. Using plant growth regulators on plant tissue culture can accelerate plant growth. Chitosan can be used as a growth promoter of orchids. This study ... -
Hubungan Amonia (NH3) dan Fosfat (PO4) Terhadap Keanekaragaman Makrozoobentos di Sungai Belawan
(Universitas Sumatera Utara, 2023)The flow of the Belawan River through a dense populated areas and factories causes waste pollution containing ammonia and phosphate which affects the diversity of aquatic organisms such as macrozoobenthos. This research ... -
Penjadwalan Shift Perawat Ruangan Lili di Rsud Arifin Achmad Kota Pekanbaru Mengguanakan Model 0-1 Linear Goal Programming Program Studi Sarjana Matematika Fakultas Matematika dan Ilmu Pengetahuan Alam Univeristas Sumatera Utara Medan 2023
(Universitas Sumatera Utara, 2023)Nurse scheduling is a critical issue in hospitals. Optimal scheduling is necessary since nurses play a significant role in hospital companies that offer healthcare services. In this instance, Goal Programming is utilized ... -
Penggunaan Limbah Sekam Padi dan Pasir Besi sebagai Bahan Magnet Permanen
(Universitas Sumatera Utara, 2023)The preparation of rice husk waste and iron sand as a permanent magnet material using the Solid State Reaction method has been successfully carried out. Preparation of samples of rice husk waste and iron sand with a ... -
Persebaran Suspensi-Resuspensi Debu Jalan dan Analisis Konsentrasi Besi, Seng, dan Tembaga dalam Debu Jalan di Tol Belawan
(Universitas Sumatera Utara, 2023)The main sources of non exhaust emissions (NEE) that contribute to road dust are tire wear particles, brake wear, road surface wear and road dust suspension resuspension (RDS). This research is an effort to identify the ... -
Uji Empirical Likelihood Ratio antara Distribusi Binomial Negatif dan Distribusi Geometrik
(Universitas Sumatera Utara, 2019)This study aims to compare negative binomial discrete distributions with geometric distributions using the empirical likelihood ratio test. To see a comparison of the two distributions through simulations using the R ... -
Pemanfaatan Serbuk Cangkang Kelapa Sawit dan Serat Cangkang Kulit Kopi dalam Pembuatan Beton Polymer dengan Resin Epoxy sebagai Perekat
(Universitas Sumatera Utara, 2023)Research has been carried out on polymer concrete using palm oil shell powder, coffee shell fiber, with epoxy resin. This research aims to determine the effect of adding palm oil shell powder and coffee shell fiber on the ... -
Pembuatan dan Karakterisasi Paving Block Ringan dengan Agregat Beton Bekas dan Serat Ampas Tebu sebagai Filler
(Universitas Sumatera Utara, 2023)studies has been achieved on the manufacture and characterization of paving blocks using used concrete aggregate and bagasse fiber as filler, with the characterization carried out including physical tests and mechanical ... -
Induksi Kalus, Protocorm-Like Bodies (PLBs), Dan Tunas Dendrobium sp. pada Media MS dengan Variasi Kombinasi Benzyl Amino Purine (BAP) dan Auksin
(Universitas Sumatera Utara, 2023)Conventional propagation of Dendrobium orchids requires a relatively longer time and low success rate, so the propagation technique needs to be carried out using tissue culture techniques, among which by varying growth ... -
Model Program Stokastik Berbasis Data Mining Spasial pada Manajemen Revitalisasi Lahan
(Universitas Sumatera Utara, 2013)Revitalization of the land use management through gradual conversion, cause-related primary focus on the interaction between distance, time and uncertainty. This as- pect is particularly relevant because most decisions ... -
Penambahan Ekstrak Daun Wortel (Daucus Carota L) pada Pakan Buatan Terhadap Pertumbuhan dan Kelangsungan Hidup Benih Ikan Nila (Oreochromis Niloticus)
(Universitas Sumatera Utara, 2023)The research to analyze the effect of carrot leaf extract (Daucus carota L) addition to the the artificial feed on the growth and survival of tilapia fry (Oreochromis niloticus). This research had been carried out on January ... -
Pola Asuh Induk Terhadap Anak Gajah (Elephas Maximus Sumatranus) pada Aktivitas Nokturnal di Taman Nasional Gunung Leuser Resort Tangkahan, Langkat, Sumatera Utara
(Universitas Sumatera Utara, 2023)The Sumatran elephant (Elephas maximus sumatranus) is one of Indonesia's fauna. Parenting pattern is needed to form characterization of the elephant and carried out at juvenile stage because at that time the elephant calf ... -
Analisis Logam Besi, Aluminium, Kromium Pada Debu dan Pola Persebaran Road Dust Resuspension-Suspension di Tol Belawan
(Universitas Sumatera Utara, 2023)Metal compound in dust and road dust distribution patterns on the Belawan highway. Research was conducted by filtering road dust with a size of 100 mesh and 200 mesh mesh, characterizcharacterized using X Ray Fluorescence ...