Judul: Sintesis Nanokomposit Grafena/Polianilin sebagai Elektroda Superkapasitor
Abstrak: Material grafena (G) telah disintesis menggunakan modifikasi metode Hummer dan direduksi dengan NaBH4. Nanokomposit berbasis grafena dan polianilin (G/PANI) disintesis menggunakan metode polimerisasi in situ. Grafena dan G/PANI dijadikan sebagai elektroda berbentuk pelet pada superkapasitor. Perbedaan nanokomposit berdasarkan massa grafena dan molaritas anilin dengan rasio 1:1 untuk G/PANI(1:1) dan 1:2 untuk G/PANI(1:2). Karakterisasi fisik material menggunakan FTIR, XRD, dan SEM. Nilai kapasitansi spesifik didapatkan menggunakan potensiostat untuk menghasilkan analisis grafik voltametri siklik (CV). Konduktivitas listrik didapatkan dengan mencari konduktansi material menggunakan LCR meter. Hasil karakterisasi fisik menunjukan bahwa material yang disintesis adalah grafena dan nanokomposit G/PANI. Nilai konduktivitas listrik tertinggi dimiliki oleh G/PANI(1:1) yaitu sebesar 1.1828 S/m. Hasil pengujian potensiostat didapatkan nilai kapasitansi spesifik tertinggi pada G/PANI(1:1), yaitu sebesar 128.3 F/g.
Keyword: elektroda, grafena, nanokomposit, polianilin, superkapasitor

Judul: Pembuatan Nanokarbon dari Limbah Baterai untuk Aplikasi Elektroda pada Superkapasitor
Abstrak: Carbon material is waste battery electrodes for supercapacitors are high potentially, since it has a high surface area, good chemical stability, and high conductivity. These carbon-based electrodes are promising candidates for energy storage devices with high performance is supercapacitor. Supercapacitor which has great potential in the storage of electrical charge, so it can be used as of equivalent fuel oil for motor vehicles, but it also wastes the battery can be recycled, thus reducing the danger of environmental pollution and public. Carbon material waste converted into nano-size batteries using High Energy Milling (HEM), to find out in the form of nano size using Particle Size Analyzer (PSA) produced 148.54 nm particle size. Furthermore, carbon material is a mixed nano size Poly (vinylidene fluoride) Polytetra and 1-methyl-2-pyrrolidone, glued in stainless steel. Results of carbon morfology form characterized using Scanning Electron Microscopy (SEM), crystallinity characterization of structures using X-Ray Diffraction (XRD), with a conductivity value of 7374.00 S/m. This suggests that carbon is a semiconductor material. Results of capacitance value with potentiostat 179.40 F/g for scan rate 5 mV/s.
Keyword: PSA, potentiostat, Carbon waste batteries, HEM, supercapacitor electrodes

Judul: The Control And Eradication Of Brucellosis In Cattle From The Standpoint Of Human Health
Abstrak: Brucella abortus occurs both in man and cattle. The organism may thrive wherever cattle are raised by man for breeding purposes. As such, spread to humans can easily be lessened if the disease is properly controlled and/or eradicated in cattle. Control of Brucella abortus in cattle can be under taken by continued vaccination, proper attention to hygiene and the particular care taken in the introduction of only brucellosis-free animals into cattle farms. Vac- cination using the strain 19 or strain 45/20 Brucella abortus vaccine is commonly used, though the former is more popular. Each of these vaccine strains has its own advantages and disadvantages. Eradication of Brucella abortus by the test and slaughter policy can also be carried out after proper vaccination programmes have been initiated and a stage reached where only a very small percentage of positive reactors is found,
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