Coconut shells are widely used as an ingredient in charcoal for cooking, daily use, and also to make activated charcoal. Activated charcoal has the ability to clean and absorb dirt on the skin, but this has not been widely used. So the purpose of this research is the use of coconut shell-activated charcoal in making liquid hand wash formulations. This research used 4 liquid hand wash formulations with activated charcoal concentrations of 1%, 2%, 3%, and 4%. Organoleptic test parameters were texture, color, scent, and homogeneity. The organoleptic test results showed the distinctive color of charcoal liquid hand wash, which has a distinctive scent with the addition of essential oils. The hedonic test on 25 panelists showed that the most preferred formula for activated charcoal hand wash was F2 (2% of coconut shell activated charcoal) with rose scent.

Cultivating with a hydroponic system is an alternative with increasingly limited agricultural land. Gamal leaves contain nutrients that are suitable to be used as hydroponic nutrients for lettuce (Lactuca sativa L.). This article will explain the effect of Gamal leaves nutrition on the growth and productivity of lettuce using the hydroponic method. The method used in this study was a Completely Randomized Design (CRD) consisting of 5 treatments namely P1 = (negative control) only water, P2 = 20% Gamal leaf nutrition, P3 = 30% Gamal leaf nutrition, P4 = leaf nutrition 40% Gamal and P5 = (positive control) AB-Mix nutrition. The parameters observed consisted of plant height, number of leaves, leaf width and gross weight. Analysis with One Way ANOVA assisted by SPSS 17 and LSD advanced test. The results on the parameters observed and analyzed carried out had a real effect on all parameters. Gamal leaf nutrition treatment on plant height P4 and P2 were not significantly different from P2, the number of leaves and leaf width of P2, P3 and P4 were not significantly different, whereas the wet weight P4 had the highest value which is significantly different from other treatments.

Mangroves have an important role both ecologically and economically, so their existence is very necessary to maintain the stability of the mangrove ecosystem. Therefore, data related to the composition and structure of mangrove vegetation are needed. The observation location is on Baai Island, west of Sumber Jaya Village, Kampung Melayu District, Bengkulu City. Sampling was carried out in August 2020 by purposive sampling with the plotline transect method for tree, pole, sapling, and seedling levels. The results of observations and calculations showed that 3 families were found consisting of the Rhizophoraceae, Avicenniaceae, and Sonneratiaceae families with 4 plant species having the highest important value index (INP), namely Bruguiera sexangula with an INP value of 141.02 for the tree level, Rhizophora apiculata with an INP value of 165 .28 for the pole level, and Avicennia marina with an INP value of 130.56 for the sapling level and the highest for the seedling level with an INP value of 103.70

Lichen is a mutualism symbiotic organism between fungi (mycobiont) and photosynthetic symbiont in the form of algae (photobiont). Lichen can be found from the lowlands to the highlands, growing epiphytes in soil, rocks, weathered wood, and on tree bark, such as on the surface of tea plants (Camellia sinensis (L.) Kuntze) in PT Sarana Mandiri Mukti, Tea plantation Kepahiang District, Bengkulu Province. This study aims to determine the phenetic relationship of lichen on tea plants (Camellia sinensis (L.) Kuntze) which was conducted in May-October 2020 in Tangsi Baru Village, Kabawetan Subdistrict, Kepahiang District. Sampling using a purposive sampling method. The samples were identified in the Laboratory of Plant Biosystematics Basic Sciences, Faculty of Mathematics and Natural Sciences, Bengkulu University. Lichens were analyzed based on 51 characters and converted into matrix data using the MS Excel program and the Numerical Taxonomy System (NTSYS) version 2.02. There are 20 species of lichens consisting of 12 species of thallus crustose type, and 8 species of thallus foliose type; belonged to Ascomycota division, 2 classes (Lecanoromycetes and Eurotiomycetes), 5 orders, and 7 families. The lichen relationship phenogram shows a similarity coefficient ranging from 0.38 to 0.94 which is divided into 2 main groups A and B. The closest similarity coefficient value, 0.94, was found in Graphis intricata with Graphis dichotoma, Glyphis cicatricosa with Sarcographa labyrinthica, species Parmotrema tinctorum with Parmotrema crinitum.

The demand for cultivated fish for public consumption has increased. One of the fish farming methods was a fish pond that is integrated with poultry, especially the types of fish that are easy to cultivate such as tilapia (Oreochromis niloticus) and catfish (Clarias sp.). The aim of this research was to determine the hematological analysis of tilapia and catfish cultivated in the integrated fish farming. The result of the study, physicochemical water parameter showed that the pond has a low pH ± 3,4 and dissolved oxygen ± 2,6 ppm. The tilapia fish had erythrocyte levels of 20,34 x10 5 cells/mm 3 and leukocyte levels of 189,6x10 3 cells/mm 3 while the catfish had erythrocyte levels of 29,62x10 5 cells/mm 3 and leukocyte levels of 113,7x10 3 cells/mm 3 . Leukocyte and erythrocyte levels in both fish have a different response. The water environment with the integrated fish farming system is shown to have a low pH because of chicken manure and feed residue that entered the fish pond, which is causing the nitrification process and causing the dissolved oxygen to be very low.