University of Bengkulu is a communal area located on the west coast of Sumatra. The main water sources to support activities at UNIB come from shallow wells (dug) and deep wells (drilled). This study aims to analyze the physical and chemical parameters of dug and bore water wells in the environment of UNIB’s campus. Water quality testing for dug and bore wells includes several treatments. Water quality analysis using the Indonesian National Standard method. The results of water quality testing for dug and bore wells founded several physical and chemical parameters exceeding Class II water quality standards. The results of the testing of the quality of water in the TSS 1 dug well had exceeded the quality standard. The results of testing the quality of dug wells 1, 2, 3 and 4 pH and phosphate parameters had exceeded the quality standard. The results of testing the quality of dug 2 meter wells dug DHL had exceeded the quality standard. The results of the testing of the quality of water in a borehole 1 phosphate parameter had exceeded the quality standard. The results of water quality testing for boreholes 2 and 3 Fe parameters had exceeded the quality standard. Dug and bore well water sources in the UNIB environment can be used for drinking water, drinking freshwater fish, livestock, irrigating crops, and / or other purposes that require the same water quality as these uses. Keywords: Physical and Chemical Parameters, Deep Water, Shallow Water, Quality Standard
Mungkus fish (Sicyopterus sp) is one of the freshwater fish that is caught by many people in Bengkulu Province. The mungkus fish are amphidromous and live in rocky rivers and fast-flowing rivers. This fish has a ventral sucker for sticking to rocks. The aim of this research was to determine the types of mungkus fish that can be found in Bengkulu Province waters based on morphometric characters. The research was conducted on 8 major rivers in 5 districts in Bengkulu Province including Argamakmur, Muko-Muko, Seluma, Manna, and Kaur. Based on the results, showed that the mungkus fish were characterized based on morphometric, there were 3 types of fish including Sicyopterus squamosissimus, Sicyopterus cynocephalus, and Sicyopterus lagocephalus. Mungkus fish found in the northern Bengkulu region tend to be smaller in size, have almost the same color pattern and darker body color than the fish found in the South Bengkulu region. The most common species found in Bengkulu is Sicyopterus squamosissimus. The Sicyopterus lagocephalus species can also only be found in rivers in the South Bengkulu region. The fish morphometric characteristics shows that differences in fish habitat will affect the growth of fish and the existence of living species in nature.
This study aims to determine the preferences of rats for different types of feed in the residential area of RT 6 and RT 8, Kandang Limun Village, Muara Bangkahulu District, Bengkulu City. The method used was random sampling with 20 clip-type mouse traps and four different types of feed baits distributed randomly around the residential areas of RT 6 and RT 8 in Kandang Limun Village. The rat collection was carried out in five replications and the number was counted, identified and preserved. Rat morphometry data were analyzed quantitatively and described descriptively. The results showed that there were two types of rats with a total of 13 individuals collected, namely Rattus tanezumi (12 individuals) and Suncus murinus (1 individual). The level of preference of rats for salted fish is 6%, sweet potato and corn is 3%, while cassava is the least preferred feed (1%). In conclusion, two species of rats were found in the residential area of RT 6 and RT 8, Kandang Limun Village. The rats prefer salted fish bait than sweet potato, corn and cassava. Keywords: Settlement, Preference, Rat, Bait
Penggunaan nanoemulsi sediaan farmasi diharapkan dapat meningkatkan penetrasi dan absorpsi bahan aktif tanpa perlu menambahkan eksipien penetrasi lain dan memiliki luas permukaan yang besar sehingga lebih efektif sebagai sistem pembawa. Natrium tripolifosfat dikenal sebagai zat pengikat silang yang paling baik untuk berinteraksi dengan polikation kitosan untuk membentuk nanoemulsi. Mengetahui karakteristik ekstrak etanol Sargassum sp. yang dikorporasikan ke dalam bentuk nanoemulsi dengan adanya variasi konsentrasi natrium tripolifosfat. Nanoemulsi metode gelasi ionik menggunakan magnetik stirer kecepatan 750 rpm dengan perbandingan ekstrak etanol Sargassum sp.: larutan kitosan: larutan natrium tripolifosfat: larutan tween formula 1 (0,25 gram; 0,1% 18 mL; 0,2% 9 mL; 0,5% 3mL); formula 2 (0,25 gram; 0,1% 18 mL; 0,4% 9 mL; 0,5% 3 mL) dan formula 3 (0,25 gram; 0,1% 18 mL; 0,8% 9 mL; 0,5% 3 mL). Karateristik nanoemulsi berupa ukuran partikel dan nilai zeta potensial. Koloid nanoemulsi yang terbentuk dikarakterisasi berupa ukuran partikel (nm); potensial zeta (mV) yaitu formula 1 (149,1±3,5 nm; 16.5±0,3 mV); formula 2 (107,1±0,5 nm; 12,7±0,1 mV); formula 3 (101,7±0,7 nm; 8,2±0,2 mV). Variasi konsentrasi larutan natrium tripolifosfat mempengaruhi ukuran partikel dan nilai potensial zeta. Semakin tinggi konsentrasi larutan natrium tripolifosfat maka memperkecil ukuran patikel dan potensial zeta. Ukuran partikel terkecil pada formula 3, sedangkan nilai potensial zeta terbaik yang paling mendekati 30 mV pada formula 1.
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