PT. Batu Hitam Jaya, bagian dari Asiatic Group dengan IUP seluas 2.000 hektar di Desa Hajran, Batanghari, melalui proyek baru Pit B2 yang beroperasi sejak November 2024 masih menghadapi kendala pada manajemen alat dan logistik produksi. Penelitian ini bertujuan mengevaluasi kondisi front, kinerja peralatan mekanis, serta mengidentifikasi hambatan dominan terhadap efektivitas produksi batubara. …
Three spot gourami (Trichopodus trichopterus) in a native freshwater fish of Indonesia that has a potential to be developed as a aquaculture fish. This study aimed to determine the best stocking density for the survival and growth of T. trichopterus which is domesticated in gallon media. The research was conducted at the Batanghari Sembilan Community Hatchery, Indralaya, the Basic Fisheries Lab…
Nile tilapia (Oreochromis niloticus) is one of the important freshwater fish commodities in Indonesia that has various strains resulting from genetic selection. This study aimed to determine the morphological characteristics and species or strain composition of Nile tilapia that are cultivated or caught in Ranau Lake by utilizing Single Nucleotide Polymorphism (SNP) molecular markers through th…
PT Bara Anugrah Sejahtera (BAS), a coal mining company located in Muara Enim, South Sumatra, is currently facing a major challenge due to limited disposal land, which has led to temporary dumping and material rehandling activities in the northern Sump area. One of the best solutions considered is a void-sharing collaboration with PT Prima Mulia Sarana Sejahtera (PMSS). However, due to the consi…
Disposal merupakan area penting dalam tambang terbuka sebagai lokasi penimbunan material tanah penutup. Namun, kestabilan lereng disposal sangat dipengaruhi oleh kondisi geoteknik material dan fluktuasi muka air tanah (MAT). Penelitian ini dilakukan di Disposal XYZ PT Bukit Asam Tbk. dengan tujuan menganalisis kondisi geoteknik material serta elevasi MAT, mengetahui pengaruh fluktuasi MAT terha…
Banyuasin waters are an estuarine area that is vulnerable to heavy metal pollution due to land-based activities. This study aimed to analyze the concentrations of heavy metals lead (Pb) and cadmium (Cd) in blood cockles (Anadara granosa) and sediments, compare the results with the applicable quality standards, and calculate the bioconcentration factor (BCF) as an indicator of heavy metal accumu…
The Francis turbine is one of the most widely used reaction turbines in hydropower plants due to its high efficiency in converting water potential energy into mechanical energy. However, turbine efficiency can decrease due to component damage and suboptimal valve opening settings. Such conditions occurred in the laboratory-scale Francis turbine at Sriwijaya University, making system repairs and…
The bonylip barb (Osteochilus vittatus, Valenciennes 1842) belongs to the Cyprinidae family. Studies on the morphometric differences between male and female O. vittatus fish from the Kelekar River have not been conducted. This study aims to determine the differences between male and female O. vittatus. This study uses a purposive sampling method. Samples were obtained from the Kelekar River, Pe…
The Sumatran featherback (Chitala hypselonotus) is one of the freshwater fish species belonging to the Notopteridae family. The public's demand for this fish has increased, leading to over-exploitation. In nature, the population of this species is declining. In efforts to prevent the extinction of this species, domestication studies should be conducted. This study aims to compare survival, grow…
One of the main needs and aspects that affect human life is water. Water is an important necessity and plays a major role for living creatures in this world. Every region certainly has various water problems, both in terms of quantity and quality of water in that region. Water is divided into two types, namely groundwater and surface water. Research in the Indralaya Mulya area will discuss grou…
The analysis of the effect of ethanol addition on the quality of RON 92 gasoline in achieving RON 98 gasoline specifications had been conducted at the laboratory of PT Kilang Pertamina Internasional RU III. This study aimed to produce RON 98 gasoline by blending ethanol into RON 92 gasoline. RON 92 gasoline, commonly known as Pertamax, is obtained by mixing 92% HOMC and 8% LOMC components. In t…
The snakeskin gourami (Trichopodus pectoralis, Regan 1910) is a freshwater fish with economic value in South Sumatra. The production of this fish relies on wild capture. Cultivation of this species is constrained by the unavailability of seed technology. This study aims to determine the effect of incubation temperature on the incubation period and hatching power of T. pectoralis eggs. This stud…
There are three common commercial tilapia species Oreochomis niloticus, O. mossambicus, and O. aureus. These species have the opportunity for hybridization. Hybridization between tilapia species is widespread, one of which is red tilapia, is a crossbreed of four different species of the genus Oreochromis, namely O. mossambicus, O. niloticus, O. hornorum, and O. aureus. The purposes of this stud…
Shallow water ecosystems such as artificial ponds or swamps, especially on campus, play an important role in maintaining micro-ecological balance. These aquatic ecosystems contain unique aquatic plants that are rarely studied in depth, one of which is Utricularia aurea. Utricularia aurea has the ability to capture small organisms such as rotifers, copepods and even mosquito larvae in the early …
Botryococcus braunii is a microalga with significant potential for producing various bioactive compounds, including lipids, proteins, and polysaccharides. B. braunii is a single-celled microalga that is classified in the green algae group and is commonly found in lakes, ponds, brackish waters, and even the sea. The utilization of B. braunii microalgae has still been limited due to insufficient …
Many villages in Indonesia still face limited access to electricity due to geographical conditions and low income levels. The use of pico-scale crossflow turbines is one of the right alternatives to increase the electrification ratio in remote or rural areas. Crossflow turbines are considered economical, because of their simple design, relatively low installation costs, and have the ability to …
Penelitian ini bertujuan untuk mengetahui kelimpahan dan pola distribusi keong Neritina juttingae di beberapa aliran Sungai Musi, Kota Palembang. Pengambilan sampel dilakukan pada lima stasiun pengamatan di anak sungai yang bermuara ke Sungai Musi pada dua waktu, yaitu pada tanggal 28 Februari dan 6 Mei 2025. Sampel diambil menggunakan metode handpicking dari substrat bambu pancang, dan data ke…
The species diversity of fish in an aquatic ecosystem serves as an indicator of environmental health. To date, no study has been conducted on the diversity of freshwater fish species in the Putak River. This research aimed to determine the fish diversity in the Putak River. The method used was direct observation with fish sampling at three stations during the transitional season (dry to rainy s…
The kissing gourami fish is one of the local commodities with high market value and great potential for development as a cultivated fish. One of the applications of feed management is regulating the feeding frequency. The purpose of this study was to determine the optimal feeding frequency for kissing gourami fish fry that supports growth, survival rate, feed efficiency, and water quality in an…
The cultivation of snakehead fish (Channa striata) significant potential to be developed. Intensive cultivation of snakehead fish has challenges due to waste accumulation, may cause a decrease in water quality and elevated ammonia levels. The biofloc system is an alternative that can be implemented by utilizing microorganisms that can control water quality. This research aimed to determine the …
The process of preserving and storing sperm is called cryopreservation process. The success of the sperm cryopreservation process is determined by several factors including extender material, fisiological solution and freezing rates. One of the extender ingredients that can be used is honey. Honey contains antioxidants and has the ability to increase extracellular osmotic activity which helps p…
Lahan rawa merupakan salah satu ekosistem yang sangat potensial untuk pengembangan pertanian. Luas lahan rawa di Indonesia di perkiraka sekitar 33,4 juta ha, yang terdiri atas lahan pasang surut sekitar 20 juta ha dan rawa lebak 13 juta ha. Pemanfaatan lahan basah oleh pemerintahan sudah dilakukan sejak tahun 1970-an. Luas lahan rawa yang telah dikembangkan pemerintahan hingga saat ini adalah …
Penelitian ini bertujuan untuk mengetahui pengaruh promosi penjualan dan iklan terhadap pembelian impulsif di Shopee (Studi kasus pada mahasiswa Fakultas Ekonomi Universitas Sriwijaya). Penelitian ini fakus pada konsumen Shopee untuk mengevaluasi sejauh mana promosi penjualan dan iklan memengaruhi pembelian impulsive konsumen, dengan tujuan memberikan rekomendasi untuk memberikan rekomendasi pe…
The purpose of this research is to analyze the performance of Air Conditioning (AC) with power 1 PK, to know the effect of COP (Coefficient of performance) with variation of regulator valve opening. The data obtained during the test air conditioner use some measuring equipment, such as Thermometer, Presseur gauge, refrigerant (digital), Manifold gauge, Vacuum pump, Leak Detector, Compressor. Th…
The study designed the crossflow water turbine runner by using material paralon (PVC), which compare variation in the angle of inlet runner 20 °, 30 °, 40 ° to get maximum efficiency. This testing using test equipment the laboratory or micro hydro power plant PLTMH to utilize renewable energy sourced from water capacity 7 litres per second with the source water from a pump with water velocit…
Sungai Komering merupakan anak sungai dari Sungai Musi yang berhulu di Danau Ranau dan berhilir di Sungai Musi. Pada bagian hulu Sungai Komering terdapat Bendung Perjaya yang terletak di Desa Perjaya Kecamatan Martapura Kabupaten Ogan Komering Ulu Timur. Bendung ini memiliki peranan yang penting sebagai sarana jaringan irigasi Komering, yang membendung Sungai Komering untuk memenuhi kebutuhan a…
The province of South Sumatra has a total area of approximately 87,017.42 km2 and lies between 1º - 4º south latitude, 102º - 106º East Longitude. South Sumatra, known as aquatic area, has large rivers with abundant water resources, these water resources are sourced from 9 major major rivers, the Musi River, and other rivers. (Kadin Indonesia, 2011). Turbine is a tool used to convert an ene…
Air quality is an important aspect for rearing japanese ornamental carp fish. Suitable water quality can support survival rate and at the same time can influence the brightness of the japanese ornamental carp fish's body color. One effort that can be made to maintain optimal water quality is by implementing a recirculation system. The aim of this research was to determine the use of recirculati…
Keberhasilan penetasan telur ditentukan oleh faktor internal dan eksternal. Salah satu faktor eksternal adalah pH. Kegunaan pH pada penetasan telur adalah untuk merangsang enzim korionase yang dapat membuat korion menjadi lunak sehingga mempercepat waktu penetasan telur ikan sepat siam. Tujuan penelitian ini adalah untuk mengetahui nilai pH terbaik terhadap persentase dan lama waktu penetasan t…
The bronze featherback (Notopterus notopterus, Pallas 1769) is a species of freshwater fish native to South Sumatra, Indonesia. This species has a high market value. The local people of South Sumatra utilize this fish as food and ingredients for the culinary industry of pempek and crackers. In addition, it is also traded as an ornamental fish. Increased fishing for this fish in the wild has cau…