Judul: Magendut : Make a good feed and cheap for catfish farmers
Abstrak: This research aims to create feed that solves the problem of catfish farmers' feed, analyze consumer assessment of alternative feed products maggot BSF, analyze the products needed farmers, and formulate a business model magendut company that suits the consumer's hopes. This research uses Design thinking model. The results obtained are (1) Consumer problems with catfish feed, the perception of catfish farmers to BSF maggot, and BSF maggot products as required by respondents. Overcoming researchers' concerns about environmental concerns caused by organic waste (2) consumers interested in processed BSG maggot (3) Magendut business model with customer segmentation of catfish farmers, the value proposition offered is the ease of getting products and payments, direct channel use and offline store, key metrics for 15 tons of feed sold monthly.
Keyword: Catfish farmers, Design thinking, Product of maggot Black Soldier Fly

Judul: Biokonversi Limbah Organik Pasar Agrobis Magetan Menjadi Protein Pakan Ternak Menggunakan Larva Black Soldier Fly
Abstrak: Salah satu pengolahan limbah organik yang ramah lingkungan adalah biokonversi limbah organik menggunakan larva black soldier fly (BSF). Penelitian ini bertujuan menganalisis karakteristik dekomposisi limbah organik Pasar Agrobis dengan larva BSF, serta mengaplikasikan dan mengkaji mutu pakan pengolahan larva BSF sebagai alternatif substitusi protein bagi pakan ternak. Penelitian dilaksanakan pada Maret-April 2022 di Kabupaten Magetan, Jawa Timur. Karakteristik dekomposisi limbah padat organik menggunakan larva BSF diidentifikasi dengan waste reduction index (WRI), fresh matter consumption rate (FMCR), dry matter reduction (DMR), dan dry matter consumption rate (DMCR). Nilai WRI dan FMCR untuk limbah organik Pasar Agrobis selama 15 hari, yaitu 3,2%/hari dan 32,1 mg/larva/hari. Nilai persen DMR sebesar 84,4% dan nilai DMCR sebesar 27,1 mg/larva/hari. Aplikasi larva BSF sebagai substitusi protein pakan memenuhi persyaratan mutu pakan berdasarkan SNI 8173:2015, kecuali lemak kasar dan serat kasar. Pertambahan bobot ayam broiler umur 8-21 hari (starter) dan 21 hari ke atas (finisher) selama 12 hari berbeda nyata terhadap pakan komersial (p>0,05) dengan nilai rasio konversi pakan (RKP) lebih rendah., One of the environmentally friendly organic waste treatments is the bioconversion of organic waste using black soldier fly (BSF) larvae. This study aims to analyze the decomposition characteristics of organic waste in the Agrobis Market with BSF larvae, apply, and examine the quality of animal feed from BSF larvae as an alternative to protein substitution. The study was conducted in March-April 2022 in Magetan Regency, East Java. Characteristics of the decomposition of organic waste using BSF larvae were identified with waste reduction index (WRI), fresh matter consumption rate (FMCR), dry matter reduction (DMR), and dry matter consumption rate (DMCR). The value of WRI and FMCR organic waste for 15 days were 3,2%/day and 32,1 mg/larva/day. The percent DMR was 84,4% and DMCR was 27,1 mg/larva/day. The application of BSF larvae as protein substitution meets the animal feed quality based on SNI 8173:2015, except for crude lipid and fiber. The growth gain of broiler aged 8-21 days (starter) and above 21 days (finisher) for 12 days obtained significantly different against commercial feed (p>0.05) with a lower food convertion ratio (FCR) value.
Keyword: Agrobis Market, bioconversion, black soldier fly, broiler

Judul: Cycle Hamilton pada Graf Lengkap, Graf Regular, dan Graf 2-Connected 4-Regular Berorder Kurang dari Sepuluh
Abstrak: Suatu graf disebut graf Hamilton apabila graf tersebut memuat cycle Hamilton, yaitu cycle yang melewati setiap vertex tepat satu kali. Menentukan keberadaan cycle Hamilton pada suatu graf dapat menggunakan syarat cukup yang berupa teorema-teorema yang telah diperkenalkan sejak tahun 1950-an. Beberapa syarat cukup yang dibahas dalam karya ilmiah ini adalah syarat cukup yang berhubungan dengan graf lengkap dan graf regular. Suatu graf lengkap berorder 𝑛������ ≥ 3 dan graf r-regular berorder 𝑛������ ≤ 2𝑟������ + 1 merupakan graf Hamilton, Karena kedua graf tersebut memuat cycle Hamilton. Selanjutnya, syarat cukup tersebut digunakan untuk menentukan keberadaan cycle Hamilton pada graf 2-connected 4- regular berorder kurang dari 10.
Keyword: graf Hamilton, graf regular, graf lengkap, graf 2-connected 4-regular