Judul: Identification and extraction of Red Pigment of pathogenic bacteria to Stem Brown Planthopper (WBC)
Abstrak: Brown Planthopper Bar (BPH) is a dangerous and rebelliousness pests of rice. Discovery of red bacteria that can infect bph becomes very important, because the bph, as the piercing and sucking type insect mouth, was rarely infected by bacteria. This study was conducted to identify the bph red pathogenic bacteria, and to determine production and inhibition activity of red pigment. Bacterial phenotypes was perfomed using GN Microplate TM Biolog kit. Nukleotide sequence aligment of 16S rDNA was analyed with BlastN of the NCBI website. Phylogenetic Tree was contructed by PHYLIP version 3.6 program. The red bacterium was identified as Serratia marcescens . S. marcescens was sensitive to streptomycin with concentration of 25μg/ml and 50 μg/ml. Red pigment produced by S. marcescens was determined as prodigiosin. Prodigiosin in concentration of 150μg/ml able to suppress up to 30% the development a bacterial leaf blight caused by Xanthomonas oryzae pv. oryzae.
Keyword: 

Judul: Penapisan dan Identifikasi Bakteri Endofit dari Tanaman Binahong dan Ketepeng Cina Penghasil Senyawa Antibakteri Patogen
Abstrak: Endophytic bacteria is a beneficial microorganism that interacts with plant without causing any harm to the host. Most studies showed that certain endophytic bacteria can produce chemical compound which have medical effect for human, especially endophytic bacteria from medicinal plant. The objective of this research are to isolation endophytic bacteria from binahong and ketepeng cina that produce antibacterial compound and to identify the potencial isolate through 16S rRNA gene. Endophytic bacteria from both plants was tested to 5 human pathogenic bacteria, that are Escherichia coli dH5α, Pseudomonas aeruginosa, Staphylococcus aureus, Bacillus cereus, and Enterobacter sakazakii. Endophytic bacteria isolate from binahong code BB5 and BB14 have ability to inhibit 5 pathogenic bacteria growth (showed by inhibition zone). Identification based on 16S rRNA gene showed that both isolates possibly are Pseudomonas sp. KR 1.13.
Keyword: 

Judul: Generalisasi Isometrik Gödel dan Persamaan Keadaan Alam Semesta Rotasi dengan Densitas Energi Vakum.
Abstrak: Model kosmologi Gödel dengan metrik yang identik dapat ditemukan pada solusi medan fluida sempurna melalui asumsi parameter tunggal dalam permisalan fungsi tebakan (D(x) = bE(x) 2 ) pada metrik ansatz. Solusi persamaan medan yang telah diselesaikan memiliki bentuk generalisasi yang membawa solusi memiliki beberapa metrik dalam bentuk lain. Solusi isometrik juga dapat ditemukan dalam persamaan medan dengan suku densitas energi vakum (p��). Penambahan suku tersebut menghasilkan metrik yang sama namun dengan solusi persamaan keadaan yang berbeda. Telah diperkenalkan nisbah densitas energi vakum dengan densitas energi ( p��/pc 2 ) pada persamaan keadaan. Nisbah tersebut memiliki pengaruh pada persamaan keadaan untuk beberapa keadaan tertentu. Persamaan keadaan dengan nisbah tersebut dapat memberi beberapa petunjuk untuk masalah konstanta kosmologi.
Keyword: solusi gödel, konstanta kosmologi, energi vakum, persamaan keadaan, isometrik