Judul: Kajian Kualitatif Residu Melengesterol Asetat (MGA) pada Daging Sapi Beku Impor dengan Metode ELISA
Abstrak: Melengesterol Acetate (MGA) is a synthetic anabolic steroid hormone used as growth promoter and suppress estrus in some feedlot exporter. Most of the synthetic anabolic steroids have a poor metabolism so it can be stored in an unchanging state in the liver, kidney, muscle, and fat of animals. MGA residues in beef can lead the risk of health problems in humans if it is high accumulates in the body such as toxicity, hypersensitivity, carcinogenic to teratogenic disorders, therefore the presence of MGA residues in beef have become the government and the world concern in the safety of foods from animal origin. Enzyme Linked Immunosorbant Assay (ELISA) is a serological method that can detect the presence and concentration of MGA residues in beef. Results obtained by using the ELISA method in this study shows that 83,72 % samples have concentration of MGA residues in imported beef is below the maximum residue limits established by Standar Nasional Indonesia (SNI 2000)
Keyword: residue., Melengesterol Acetate (MGA), ELISA, Imported Beef

Judul: Kajian Kualitatif Residu Trenbolon Asetat pada Daging Sapi Beku Impor dengan Metode ELISA
Abstrak: Hormone residues in meat are chemical hazard that can induce reproductive disorders if accumulated in human’s body. One of hormone residue that can be found in meat is trenbolone acetate. Trenbolone acetate is a steroid hormone synthesized from testosterone and commonly used as growth promoter in livestock animals. Inside the body, it will be metabolized in to trenbolone acetate and 17β-trenbolone that deposited in muscles. The presence of residues become a food safety’s issue that needs to be concerned. Therefore, residues check in imported meat must be done as one of customer’s protection effort. Enzyme linked immunosorbant assay (ELISA) is a method that can be used to detect hormone residue’s concentration in food product. Residue’s standard of 17β-trenbolon has range of concentration starts from 0 25, 50, 100, 200, and 400 ppt. The result of ELISA in 64 samples shows that imported frozen meat which have been tested are safe from 17β-trenbolone’s residues which was stated by Codex Alimentarius Commission
Keyword: 

Judul: Desain Bangunan Turbin Picohidro dengan Tenaga Air Irigasi
Abstrak: Jaringan irigasi memiliki potensi sebagai pembangkit listrik tanpa emisi karbon. Penelitian ini bertujuan mendesain bangunan turbin pikohidro dengan tenaga air irigasi. Desain bangunan turbin pikohidro tenaga air irigasi telah dapat didesain dengan turbin reaksi kaplan yang terdiri dari desain turbin tunggal dengan daya 24,5 kWh/hari dan desain multi turbin dengan daya 122,75 kWh/hari. Kecepatan aliran irigasi berkisar antara 0,4 m/s – 0,74 m/s dengan potensi daya 1,4 kWh – 655,1 kWh. Hasil simulasi menunjukan tipe Kaplan adalah turbin terbaik yang dapat digunakan pada desain bangunan turbin pikohidro tenaga irigasi. Pada kondisi debit inlet 18 l/s dan ketinggian terjun 0,5 m bangunan turbin pikohidro menghasilkan putaran poros turbin sebesar 106 rpm, tegangan 15,6 volt dan arus 1,1 ampere. Bangunan turbin pikohidro sebaiknya dipertimbangkan sebagai bagian dari bangunan terjun aliran irigasi untuk meredam energi.
Keyword: Irrigation Networks, Pico hydro, Turbine, Power