Judul: Keragaman genetik kelapa genjah jombang berdasarkan  penanda RAPD (Random Amplified PoIymorphic DNA)
Abstrak: Information of genetic diversity in coconut (Cocos nucifera L.) is necessary to support the breeding programs and germplasm conservation efforts. RAPD is molecular marker can provide to enhance the efficiency of early selection for time consuming of coconut breeding. The objective of this research was to study the genetic diversity of Jombang dwarf coconut populations grown at Pakuwon and Mapanget Coconut Research Station (BALITKA) and at Jombang, and to identify RAPD markers of Genjah Merah Jombang (GMJ), Genjah Kuning Jombang (GKJ), Genjah Hijau Jombang (GHJ), and Genjah Coklat Jombang (GCJ) populations. DNA was amplified using Polymerase Chain Reaction (PCR) and ten random decamer primers. 92% of RAPD markers were polymorphic. Genetic diversity of coconut population in BALITKA was higher than that in Jombang. Genetic diversity within GMJ, GKJ, GHJ, and GCJ populations was 15, 15, 19, and 16% respectively, but among populations was 20%. 750 bp band has been identified from DNA bulk of GCJ coconut using OPA 18 primer. This DNA fragment need to be analyzed further whether could be used as spesific marker for GCJ coconut population.
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Judul: Kemiripan genetik populasi kelapa dalam mapenget, tenga, Bali, Palu, dan sawarna berdasarkan penanda RAPD (Random Amplified Polimorphic DNA)
Abstrak: A study of genetic similarity in coconut by RAPD analysis was performed in 50 individuals representing 5 tall coconut populations namely Mapanget Tall (DMT). Tenga Tall (DTA), Bali tall (DBI), Palu Tall (DPU), and Sawarna Tall (DSA), showed polymorphic bands with all 10 primers tested. A total of 91 RAPD bands were scored with 87 polymorphic bands (95%). A high level within-populations (13% - 22%). Improved character by selection in DMT, DTA, and DSA populations must be done carefully in individual palm which still high enough genetic distance, but in DBI and DPU populations it still have a good possibility.
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Judul: Solusi Geometri Schwarzschild untuk Dimensi 4+1 dengan Invarian Rotasi Isotropik.
Abstrak: Metrik Schwarzschild merupakan solusi eksak pertama dari persamaan medan Einstein dengan mangasumsikan metrik statik dan simetris. Metrik Schwarzschild yang ditemukan oleh Karl Schwarzschild masih dalam dimensi 3+1, namun seiring dengan teori-teori terbaru yang menunjukkan bahwa alam semesta tidak hanya di dimensi 3+1. Maka melalui penambahan dimensi, tujuan penelitian ini memperoleh solusi pada geometri Schwarzschild untuk dimensi 4+1 dengan memodifikasi koordinat bola yang invarian rotasi isotropik dan melalui penurunan rumus seperti koordinat bola, simbol Christoffel, dan tensor Ricci. Selain mendapatkan solusi ini, metrik Schwarzschild dimensi 4+1 dapat digunakan sebagai metrik dasar untuk memperoleh solusi blackhole dan wormhole pada dimensi 4+1. Hasil akhirnya, dengan memanfaatkan modifikasi koordinat bola, metrik Schwarzschild dapat dibentuk sehingga diperoleh solusi geometri Schwarzschild untuk dimensi 4+1.
Keyword: metrik Schwarzschild, persamaan medan Einstein, modifikasi koordinat bola, penambahan dimensi, invarian rotasi isotropik