JUSTER : Jurnal Sains dan Terapan

Analisis Pengaruh Kendaraan Yang Melakukan Putar Balik Terhadap Kinerja Ruas Jalan (Studi Kasus Pada U–Turn Jl. Bypass Padang)

Aufa Fadhil — 2024-01-22

Transportation has an important role in human life, because transportation has a big influence on society, economic and social political development of a country. research discusses analysis of influence of vehicles making a U-turn on Bypass No. KM 15, Aie Pacah, Tangah City, Padang City, West Sumatra. Research purposes is to determine level of service that occurs in traffic flow, to obtain this aim PKJI 2014 is used. This research obtains average travel time for vehicles making a U-Turn, length of queue when making a U-Turn, average travel time average number of vehicles disturbed and not disturbed by U-Turns and knowing level of service on that road section. From data processing it can be concluded that peak hour vehicle speeds are slower than non-peak hour vehicle speeds due to high traffic flow. Meanwhile, waiting time when a vehicle is about to turn around, during peak hours vehicles wait longer than during non-peak hours because volume of vehicles is denser during peak hours. Average queue length in opposite direction during peak hours is longer than during non-peak hours due to the density of vehicles during peak hours, it can be concluded that level of service C.

Metodologi Pendekatan Sistemik: Metode Manajerial Mendasar Dan Powerful Yang Perlu Diimplementasikan

Chatarina Dian Indrawati — 2024-01-22

Large-scale problems are complex and interrelated. Decisions made in these matters can have unexpected impacts. A systemic approach is a management method that can be used to solve systemic problems. This approach consists of two models, namely a qualitative model and a quantitative model. Qualitative models ensure that the issue is fully understood, while quantitative models allow for analysis of policy scenarios. In this article, the systemic approach methodology is briefly discussed. This methodology begins with a qualitative formulation in the form of a causal-loop diagram. Causal-loop diagram is a diagram that describes the cause-and-effect relationship between variables in a system. Next, this methodology is continued with quantitative formulation in the form of stock-and-flow diagrams. Stock-and-flow diagram is a diagram that depicts the flow and supply of resources in a system. Further computations for experimental purposes (up to policy scenario simulations) can be implemented using Vensim® software. This article discusses the systemic approach methodology up to the experimentation example stage.

Keragaman Makro Alga Berdasarkan Karakter Morfologis Di Pantai Ria Kecamatan Woja Kabupaten Dompu

Leni Maulani Puja — 2024-01-22

sea. This study aims to find out the types of macroalgae found in Ria Beach, Woja District, Dompu Regency, to find out the Macro Diversity of algae in Ria Beach, Woja District, Dompu Regency. This study used an exploratory survey method, sampling using the Transect Line method with the Quadrant Sampling technique. Analysis of data types and utilization of research results using qualitative analysis techniques, while the level of diversity using quantitative analysis techniques, namely the index of diversity. The results of the study in the Ria Beach area, Woja District, Dompu Regency found 4 types of macroalgae, namely, Boergesenia forbesii, Ulva lactuta, Padina australis, Sargassum polycystum. The diversity of macroalgae species in the Ria Beach area, Woja District, Dompu Regency is moderate.

Studi Etnobotani Tumbuhan Obat Masyarakat Bumi Pajo

Nehru — 2024-01-22

This research aims to study the use of medicinal plants in the community as one of the community's healing traditions in Bumi Pajo Village, Donggo District, Bima Regency as well as the traditional medicinal plant processing methods used by the people of Bumi Pajo Village, Donggo District, Bima Regency. As a type of qualitative research, this research has four informants: village heads, community leaders, religious leaders, and medicine makers. Data collection methods use observation, interviews and documentation. Data analysis consists of three stages: data reduction, data display, and drawing conclusions. This study found that the use and management of traditional medicinal plants in Bumi Pajo Village has been passed down from generation to generation. Medicinal plants are processed in various ways, such as boiling, pounding, steaming, pounding, grinding, grating, and kneading in water. Recommendations from this research are (1) The use of medicinal plants must be maintained and taught to the next generation (2) In the process of consuming plants medication by the people of Bumi Pajo Village, care needs to be taken in determining the amount of medication that can be used to prevent or treat disease (3) This is necessary because it is hoped that this will enable researchers to study more factors related to the use of traditional medicine, especially relating to local communities in certain areas.

Studi Inventarisasi Hewan Invertebrata Di Pantai Monta Kabupaten Bima

Oktavianus Sarno — 2024-01-22

Field practicum held by students of Gnggusuwaru University, Biology Education Study Program, on Sarae Me'e Beach with the aim of clarifying invertebrate animals. There are several animal phyla that we found, namely the cnidaria phylum and the echinoderm phylum, which live on rocks at a distance of 3.95 meters from sea water. The arthropod phylum lives in sea water at a depth of 1.5 meters from the sea surface. The mollusk phylum lives on land at a distance of 15 meters from sea water.

Pengaruh Pemberian Ampas Tahu Terhadap Pertumbuhan Ikan Lele Dumbo (Clarias gariepinus)

Suci Lestari — 2024-01-22

Ikan lele dumbo (Clarias gariepinus) merupakan ikan yang hidup di air tawar, yang masuk ke Indonesia. Tujuan penelitian ini adalah untuk mengetahui pengaruh pemberian ampas tahu terhadap pertumbuhan Ikan Lele Dumbo (Clarias gariepinus). Penelitian ini dilaksanakan mulai dari tanggal 25 Mei sampai 30 Juni selama 35 hari di Pembudidaya Ikan Lele di desa Tente Kec Woha. Metode penelitian yang digunakan adalah metode eksperimen dan Rancangan Acak Lengkap (RAL) dengan empat perlakuan dengan satu sebagai control. Analisis data yang digunakan Sidik Ragam ANSIRA dengan perhitungan Konversi Pakan (FCR), Laju Pertumbuhan Panjang Mutlak, Tingkat kelulusanhidup (SR) dan kualitas air. Hasil penelitian ini menunjukkan adanya pengaruh perbedaan yang nyata pada pemberian pakan yang ditambah dengan pemberian ampas tahu terhadap pertumbuhan berat maupun panjang badan ikan lele dumbo. Pakan terbaik terdapat pada perlakuan P3 dengan dosis 20% dengan bobot berat badan 40 gram panjang mutlak yaitu 6,66 cm dan memperoleh nilai konversi terendah diantara perlakuan lainnya yaitu 274.

Mengidentifikasi keanekaragaman Hewan Invertebrata di Pesisir Pantai Sarae Me’e Desa Tolotangga Kecematan Monta

Pipit Fadillah — 2024-01-22

Invertebrates are a large group of living creatures that do not have backbones. In biological classification, these animals include various groups such as arthropoda, mollusca, annelida, and echinodermata. Even without backbones, invertebrates have various body suppart systems, such as exoskeletons or internal skeletons. The study of invertebrtes not only illustrates their morphological divetsity, but also shows their crucial role in ecosystems as pollinators, decomposers, and food sources.and 97% of species in the world are invertebrates. This research activity is an activity that aims to identify data about the types of invertebrate animals that exist on Sarae Me’e beach, Sarae Me’e Beach is an open sea type beach, causing the waves on the beach to be large. This research was carried out on January 3 2024. The method used in this research is the exploration and identification method using exploration techniques along the coastline. The research objects are Invertebrate animals found along the coast of sarae me’e, Tolotangga village, Monta subdistrict. The data analysis technique used in this research is descriptive analysis technique. The results of the research faund four Invertebrate animals including the phylum Mollusca, Gastropoda, Athropoda and Annelida.and the salinity condition of the waterthat we tested using a salinity tool was 30% salt content on Sarae Me’e when we conducted the research.

Adaptasi Ekofisiologi Terhadap Iklim Tropis Kering: Studi Anatomi Daun Dua Puluh Jenis Tumbuhan Berkayu

Nurul Fahida — 2024-01-22

The research carried out is useful for knowing the shape of the leaves, types, distribution areas of the plants, as well as the local and ethnic names of twenty types of woody plant leaves that are 5 to 10 years old. This research was carried out at the Sadundu Pidu Rora waterfall, Bima Regency. Based on the research results, there were 20 types of leaves that were studied and had different leaf shapes and sizes from other leaves, the leaves studied had local names from the Bima area and had different types and distribution areas. Using the free roaming method and carrying out an approach analysis of plant types that are appropriate to the tropical climate conditions found in the Sadundu Pidu waterfall area in Rora and schematized with clear names for each plant examined as well as documentation of each woody plant leaf.

Pengaruh Pemberian Pestisida Nabati Daun Tembakau Terhadap Mortalitas Keong Mas (Pomacea canakuculaka)

Melisyah Putri Wulandari — 2024-01-26

The results of the mortality percentage of golden snails (Pomacea canakuculaka L) show that it is said to be effective if it is more than 50%. Meanwhile, golden snail mortality is said to be ineffective below 50%. At a concentration of 50 gr it shows a mortality percentage of 70%, which means it is effective, while at a concentration of 100 gr it shows a mortality percentage of 76% and at a concentration of 150 gr it shows a mortality percentage of 83%, which means that at a concentration of 100 gr and 150 gr it is effective as a botanical pesticide for tobacco leaves. on mortality of golden snails (pomacea canakuculaka L.). Based on the results of research on the effect of using tobacco leaf botanical pesticides on the mortality of golden snails (Pomacea canakuculaka L.), it can be concluded that the greater the concentration of tobacco leaves used, the more effective the mortality of golden snails (Pomacea canakuculaka L.).

Potensi Senyawa Antimikrobia Simplisia Teripang Pasir (Holothuria scabra) Terhadap Penghambatan Pertumbuhan Bakteri

Nikman Azmin — 2024-01-30

Helicobacter pylori bacteria is a pleomorphic bacteria that can cause wounds and bruising in the stomach, and even lead to cancer. The use of antibiotics in the eradication of Helicobacter pylori has the effect of causing the body to become resistant to antibiotics and the global crisis has caused treatment costs to become increasingly expensive at this time. Therefore, it is necessary to think about ways to find new alternative treatments to control the growth and infection caused by Helicobacter pylori bacteria, such as traditional medicines which have the potential to have damaging effects on genes. The Ministry of Health has launched a traditional medicine development program towards phytotherapy group medicines. One natural ingredient that is thought to contain active antibacterial ingredients is sea cucumber. Sea cucumbers have long been used as a source of traditional medicine. The research results show that there are several zones of resistance from sand sea cucumber simplicia (Holothuria scabra) to inhibit the growth of Helicobacter pylori. Then there was also a change in the DNA integrity profile of the Helicobacter pylori gene due to the effect of the sand sea cucumber simplicia (Holothuria scabra), namely by not forming DNA bands.