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Artikel Ilmiah

Diskusi Ilmiah PPI: Program Agribisnis bagi Petani Kecil Pasca konflik di Aceh

Oleh: 

Eka Widayati

Diskusi ilmiah pada sore hari itu, 6 Agustus 2014, diawali oleh pemaparan olehBapak Shohibuddin dari Ikatan Mahasiswa Aceh Belanda dengan pengantar yang dibawakan oleh Teuku Firman.

Filosofi Model dan Modeling

Oleh: 

Ditdit N Utama

Problem domain, memungkinkan aktivitas analisis dan perhitungan menjadi sangat murah dan sederhana. Bolehlah tidak sampai dikatakan nir risiko dan nir biaya, namun setidaknya problem domain membuat risiko dan biaya jauh dari yang dibayangkan; jauh lebih rendah daripada kita melakukan analisis dan perhitungan langsung pada level implementasi (real domain).

Keragaman dan Potensi Gulma Padi di Indonesia untuk Pakan Ternak Ruminansia

Oleh: 

Nur Rocmah K

Padi merupakan bahan pakan pokok masyarakat Indonesia dengan sekitar 50% masyarakat Indonesia bergantung pada ketersediaan padi.  Penanaman padi mencakup luasan 11,5 juta hektar di seluruh kepulauan Indonesia, terutama di Jawa mencapai 5,4 juta hektar (Badan Perencanaan Nasional, 2003).  Pada tahun 2003, di area lahan produksi padi yang mencapai 10,5 juta hektar produktivitas tertinggi dicapai di lahan sawah beririgasi karena penanaman dapat dilakukan lebih dari sekali dengan hasil panen yang lebih baik.

Karakterisasi Molekuler dan Fungsional Kematian Sel terprogram Pada Toxoplasma gondii

Oleh: 

Ni Nyoman Ayu Dewi

Toxoplasma gondiiadalah parasit yang dapat menginfeksi semua hewan berdarah panas, termasuk manusia. Hampir sepertiga penduduk dunia terinfeksi oleh T. gondii. Infeksi karena parasit ini, yang menyebabkan penyakit bernama toksoplasmosis, umumnya tidak menimbulkan gejala tetapi dapat berakibat fatal bagi orang dengan penurunan daya tahan tubuh (misalnya penderita AIDS) dan ibu hamil yang mendapatkan infeksi primer selama kehamilannya.

Genetic analysis and QTL mapping for seed fibre content in a black seeded doubled haploid population of winter oilseed rape (Brassica napus L)

Oleh: 

Edy Suprianto

High fibre content of the oil extracted meal is a limiting factor for its use as animal feed. Fibre fraction in rapeseed meal, particularly lignin which is mainly located in the seed coat is poorly digested and essentially dilutes the available energy and protein. To increase the value of oilseed rape meal for animal feeding, breeding efforts are undertaken to develop cultivars having lower fibre content.

Immobilization of Detergent Degrading Bacteria in Trickle Bed Reactor for Detergent Industrial Effluent Removal: Linear Alkylbenzene Sulfonate

Oleh: 

Ayu Mutiara 1*, Sri Harjati Suhardi 2*

Washout biomass is limiting factor to detergent biodegradation in industrial waste water treatment due to foaming and surfactant biocide effect, which can be overcome by selecting suitable immobilization media for supporting microbial attachment and growth, which incase, in semi-continuous operation. The purpose of this work was to investigate linear alkylbenzenesulfonate removal as word’s commercial detergent formula using immobilized detergent degrading bacteria. Cells were adsorbed on porous zeolite which is modified with activated carbon-cement, activated carbon-polyvinyl alcohol (PVA), or sintered. Bioreactor containing immobilized bacteria on PVAactivated carbon modified zeolite shows two times higher removal efficiency among others, and SEM image shows bacterial colonization covering its crystal structure after 15 days.

Modeling and Simulation to Determine Thermal Properties, Optimum Temperature and Freezing Time Using Planck Equation Model

Ground beef preservation with freezing needs to be performed optimally, both for temperature and freezing time. Thus, it needs to know its characteristics and thermal properties changes during freezing. The aim of this study was to determine the optimum time and freezing temperature in ground beef freezing using Planck equation through simulation in computer programming language where Visual Basic 6.0 was used and Planck equation was then modified in such a way that it can be computed and simulated.