Faculty of Mathematics and Natural Sciences: Recent submissions
Now showing items 721-740 of 11355
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Pengaruh Ekstrak Etanol Daun Sambung Nyawa (Gynura procumbens [lour.] Merr.) terhadap Lesi Aterosklerosis pada Tikus Putih (Rattus norvegicus l.) Jantan yang Diinduksi Aloksan
(Universitas Sumatera Utara, 2024)Diabetes mellitus is a disease that occurs due to impairment of the insulin production and the supply in the body characterized by high glucose levels (hyperglicemia). The sambung nyawa (SB) leaf extract has bioactive ... -
Uji Efektivitas Nanoherbal Daun Gagatan Harimau (Vitis gracilis Wall.) terhadap Histologi Hati Tikus Wistar (Rattus norvegicus L.) Jantan Model Diabetes Mellitus yang Diinduksi Aloksan
(Universitas Sumatera Utara, 2024)Diabetes mellitus can damage organs and tissues in the body, especially the liver. The leaves of gagatan harimau (Vitis gracilis Wall.) contain metabolites, namely flavonoids and terpenoids, which act as antioxidants and ... -
Uji Efektivitas Nanoherbal Daun Gagatan Harimau (Vitis gracilis Wall.) terhadap Histologi Testis Tikus Wistar (Rattus norvegicus L.) Jantan Model Diabetes Mellitus yang Diinduksi Aloksan
(Universitas Sumatera Utara, 2024)Diabetes mellitus can affect the testicular organs, including a reduction in the size and weight of the testicular size and weight, increased abnormalities in spermatogenesis, characterised by the number of sperm produced. ... -
Pengaruh Ekstrak Etanol Daun Sambung Nyawa (Gynura procumbens [Lour.] Merr.) terhadap Histologi Pankreas Tikus (Rattus novergicus L.) Jantan yang Diinduksi Aloksan
(Universitas Sumatera Utara, 2024)The use of herbal plants as antidiabetic drugs can be deployed as an alternative to reduce the consumption of drugs that are relatively expensive and have many side effects in the treatment of diabetes. One plant that can ... -
Sintesis Metil Ester Minyak Kelapa Sawit pada Variasi Berat Katalis Abu Kulit Kakao dan Kecepatan Pengadukan Menggunakan Alat Pendispersi Homogen
(Universitas Sumatera Utara, 2024)Methyl ester from palm oil have been synthesized through a transesterification reaction using cacao shell ash as a heterogeneous catalyst. Cocoa shell powder was analyzed using TGA, then calcined at 750oC for 4 hours,then ... -
Sintesis Metil Oleat dari Asam Oleat dan Metanol pada Variasi Rasio Molar dan Daya Microwave Menggunakan Katalis Abu Kulit Telur Ayam
(Universitas Sumatera Utara, 2024)The synthesis of methyl oleate from esterification reactions between oleic acid and methanol using chicken eggshell ash catalyst using microwave. Chicken eggshell powder analyzed using Thermogravimetric Analysis (TGA), ... -
Sintesis Metil Ester Minyak Kelapa Sawit Mengggunakan Katalis Abu Kulit Kakao pada Variasi Waktu dan Rasio Molar Menggunakan Pendispersi Homogen
(Universitas Sumatera Utara, 2024)Methyl ester from palm oil (RBD palm olein) has been synthesized through a transesterification reaction using cocoa shell ash (Theobroma cacao) as a heterogeneous catalyst. Cocoa shell powder was analyzed using ... -
Perilaku Menyusu Anak Gajah Sumatra (Elephas maximus sumatranus) di Kawasan Taman Nasional Gunung LeuserResort Tangkahan, Langkat, Sumatera Utara
(Universitas Sumatera Utara, 2024)This research aims to explain the suckling behavior of Sumatran elephant calves (Elephas maximus sumatrans) in the Gunung Leuser Resort Tangkahan National Park area, Langkat, North Sumatra. The process when an elephant ... -
Kajian Sistem Antrean dan Simulasi pada Stan Prangko Personal Asean High – Level Forum 2023
(Universitas Sumatera Utara, 2024)Queues are a major factor affecting the operational performance of the ASEAN High Level Forum 2023 Personal Stamp Booth. From the results of the study, it was obtained that the total service time needed to serve 139 ... -
Pembuatan Metil Ester Asam Lemak dari Sludge Palm Oil Menggunakan Katalis Lipase pada Perbandingan Waktu Reaksi dan Pengaruh Daya Mikrowave
(Universitas Sumatera Utara, 2024)Preparation of fatty acid methyl esters from palm oil sludge has been carried out through esterification-transesterification reaction using lipase enzyme as biocatalyst with the help of microwave heating. The reaction time ... -
Isolasi dan Identifikasi Golongan Senyawa Fenolik dari Daun Sigar Jalak (Flueggea virosa (Roxb. Ex Willd.) Royle)
(Universitas Sumatera Utara, 2023)The phenolic compound had been isolated from the leaves of sigar Jalak (Flueggea virosa (Roxb. Ex Willd.) Royle. Isolation was carried out by maceration extraction method with methanol and methanol extract was re extracted ... -
Sintesis Arang Aktif dari Cangkang Kelapa Sawit sebagai Adsorben dalam Penurunan Logam Besi (Fe) pada Air Sumur Bor
(Universitas Sumatera Utara, 2024)This research aims to analyze the iron metal content in drilled well water in the Medan-Pancing area and use palm oil shell activated carbon to reduce the iron (Fe) metal content in drilled well water. To see the effect ... -
Isolasi dan Identifikasi Golongan Senyawa Flavonoida dari Sabut Kelapa Wulung (Cocos nucifera L.)
(Universitas Sumatera Utara, 2023)Isolation and identification of flavonoid compound from wulung coconut fiber (Cocos nucifera L.) had been carried out through the maceration stage with methanol solvent. The methanol extract is concentrated, then the ... -
Isolasi dan Identifikasi Golongan Senyawa Flavonoid dari Kulit Batang Perepat (Sonneratia alba Sm.)
(Universitas Sumatera Utara, 2024)Isolation and identification of flavonoid compound from the bark of perepat (Sonneratia alba Sm.) had been carried out through the maceration extraction with methanol solvent. The methanol extract is concentrated, then ... -
Optimasi Temperatur Kalsinasi Kalsium Karbonat (CaCO3) dari Cangkang Telur Ayam Ras dan Aplikasinya untuk Adsorpsi Ion Logam Mn2+
(Universitas Sumatera Utara, 2023)Research on temperature variations in calcium carbonate (CaCO3) from eggshells of purebred chickens and their application to the adsorption of Mn 2+ metal ions has been carried out. The adsorption ability of the adsorbent ... -
Implementasi Metode Goal Programming dalam Perencanaan Produksi dengan Pendekatan Metode Simpleks
(Universitas Sumatera Utara, 2024)The problem that occurs at France Bakery is that there are remaining unsold sandwiches, and the amount of each sandwich produced is not an appropriate amount to obtain maximum profit based on the limited raw materials ... -
Tong Sampah Pintar yang Dapat Memberi Notifikasi Berbasis Ketinggian Sampah, Konsentrasi Gas Amonia dan Nyala Api Terintegrasi IoT
(Universitas Sumatera Utara, 2024)Waste is a serious problem in the environment. Poor waste processing can cause detrimental environmental problems. This research aims to develop a tool that functions as a smart trash can which has the ability to provide ... -
Alat Penyiraman Tanaman Otomatis Berbasis Curah Hujan, Suhu Udara, Intensitas Cahaya, dan Kelembapan Tanah Terintegrasi Flutter sebagai Antarmuka Pengguna
(Universitas Sumatera Utara, 2024)The objective of this study is to develop an IoT-based device, or, to be more specific, an automatic plant watering system equipped with an FC-37 rain sensor, a DS18B20 temperature sensor, an LDR sensor, and a YL-69 soil ... -
Studi Perbandingan Metode Oreste dan Electre dalam Perankingan Provinsi di Indonesia Berdasarkan Kualitas Hidup
(Universitas Sumatera Utara, 2024)This study provides deeper insights into the strengths and weaknesses of each MCDM method in the context of ranking provinces in Indonesia based on quality of life. The indicators include health, material well-being, ... -
Isolasi Fragmen Gen pup1 sebagai Gen Ketahanan Penyakit Blas pada Padi Siporang (Oryza Sativa L.) dari Sipirok, Sumatera Utara
(Universitas Sumatera Utara, 2024)The decline in rice productivity can be caused by disease attack to the paddy, one of them is blast disease, it is caused by the hemibiotropic fungus Pyricularia oryzae. In North Sumatra, rice that resistant to blast ...