Judul: Dairy Farm Waste Treatment Using Black Soldier Fly (Hermetia Illucens).
Abstrak: Penelitian ini bertujuan untuk mengolah limbah organik yang dihasilkan Peternakan X sesuai potensi limbah yang dihasilkan dengan memanfaatkan larva serta proyeksi biaya dalam pengolahan limbah menggunakan BSF. Penelitian ini menggunakan dua langkah pendekatan dalam pengolaham limbah Peternakan X, yang pertama adalah penelitan pendahuluan untuk melihat performa larva Black Soldier Fly (BSF) dengan kontrol (Pur ayam komersil (1000 g) + water mixer (air 1000 g)), P1 (SFPM (600 g) + water mixer (air 300 g), P2 (SFPM (550 g) + Refusal (150 g) + water mixer (air 200 g dan susu reject 100 g)). P3 (SFPM (390 g) + Refusal (210 g) + water mixer (air 150 g dan susu reject 150 g)). Performa terendah pada perlakuan dengan komposisi pakan SFPM 600 g, dan air 300 g ,dengan bobot awal 100 g menjadi 107,67 selama 39 hari dan persentase hidup larva 20,53%,. Performa terbaik dengan komposisi pakan SFPM sebanyak 390 g, refusal 210 g, air 150 g dan susu reject 150 g, dengan bobot awal 100 g menjadi 346,60 g dengan persentase hidup larva sebesar 66,13% dengan siklus 39 hari., The objective of the experiment was to treat the organic waste produced by X dairy farm based on the potential waste produced by utilizing larvae and the projected scale-up costs in waste treatment using BSF. This study uses a two-step approach in treating X livestock waste, the first is preliminary research to see the performance of Black Soldier Fly (BSF) larvae with P0 ( Chicken feed (1000 g) + water mixer (1000 g water)), P1 (SFPM). (600 g) + water mixer (water 300 g), P2 (SFPM (550 g) + Refusal (150 g) + water mixer (200 g water and 100 g reject milk)) P3 (SFPM (390 g) + Refusal (210 g) + water mixer (150 g of water and 150 g of reject milk). The lowest performance was treated with SFPM feed composition of 600 g and water 300 g, with an initial weight of 100 g to 107.67 for 39 days and larval survival percentage of 20.53%, the larval cycle became pre-pupae 39 days. The best performance with the composition of SFPM feed as much as 390 g, refusal 210 g, water 150 g and reject milk 150 g, with an initial weight of 100 g to 346,60 g for 39 days with a larval survival percentage of 66,13%.
Keyword: Black Soldier Fly, limbah peternakan, analisis biaya, Black Soldier Fly, cost analysis, Farm Waste

Judul: Black Soldier Fly Maggot Nutrient Composition Using Faeces Growing Media and Animal Feed Leftovers
Abstrak: Penelitian ini bertujuan mengetahui kandungan nutrien maggot black soldier fly (BSF) menggunakan media limbah peternakan ayam petelur, kambing, dan sapi. Penelitian ini menggunakan rancangan acak kelompok dengan 3 perlakuan dan 3 ulangan. Perlakuan A (feses ayam petelur dan dedak padi), B (feses kambing dan sisa pakannya berupa rumput lapang) dan C (feses sapi dan sisa pakannya berupa rumput gajah). Parameter yang diamati adalah performa maggot, kadar air, bobot populasi, suhu, dan kelembaban. Data dianalisis menggunakan uji Analisis of Variance (ANOVA) dengan uji lanjut Duncan. Hasil penelitian menunjukkan bahwa perlakuan A berbeda nyata (P<0,005) dibandingkan dengan perlakuan lainnya untuk parameter bobot, kadar air, dan panjang. Populasi terbanyak didapatkan pada perlakuan A. Suhu yang optimal bagi pertumbuhan maggot adalah 30oC dan kelembaban yang diukur dengan kadar air berkisar antara 70%-80%. Kandungan nutrien maggot tertinggi didapatkan pada maggot perlakuan B. Kesimpulannya media maggot perlakuan A memiliki pengaruh performa yang lebih tinggi daripada media lain., This study aimed to determine the nutrient content of black soldier fly (BSF) maggot using the waste media of laying hens, goats and cows. This study used a randomized block design with 3 treatments and 3 replications. Treatments A (laying chicken faeces and rice bran), B (goat feces and grass residue) and C (cow feces and elephant grass residue). Parameters observed were Maggot performance, moisture content, population weight, temperature and humidity. Data were analyzed using the Analisis of Variance (ANOVA) test with Duncan's further test. The results showed that treatment A was significantly different (P<0.005) compared to other treatments for the parameters of weight, moisture content and length. The largest population was found in treatment A. The optimal temperature for maggot growth was 30oC and humidity as measured by water content ranges from 70%- 80%. Maggot with treatment B had the highest nutrient content. In conclusion, maggot media treatment A had a higher performance effect than other media.
Keyword: kandungan nutrien, limbah peternakan, maggot, protein

Judul: Penggunaan Teorema Homeomorphy 2-Manifold dan Teorema Euler Poincare pada Torus 𝑇�� dan Simplicial Complex 𝐾��
Abstrak: Two dimensional topological spaces are said to be homeomorphic if they have the same topological invariant, where one of topological invariant used is an Euler characteristic. Homeomorphy 2-Manifold’s Theorem and Euler Poincare’s Theorem are used to distinguish two topological spaces. Homeomorphy 2-Manifold’s Theorem uses Euler characteristic to identify two dimensional topological spaces. Euler Poincare’s Theorem is an alternative way to find Euler characteristic with Betti number, which is topological invariant as well. The objective of this paper is to investigate the homeomorphism of torus 𝑇����� and simplicial complex 𝐾�����. Topological space torus and simplicial complex 𝐾����� have the same Euler characteristic, which is two. Based on Homeomorphy 2-Manifold’s Theorem topological space torus 𝑇����� and simplicial complex 𝐾����� is homeomorphic.
Keyword: simplicial, torus, Euler, homeomorphism, topology