Judul: Pengaruh Perendaman dalam Air Panas dan Konsentrasi Ethephon terhadap Pematahan Dormansi Benih Kelapa Sawit (Elaeis guineensis Jacq.)
Abstrak: This research was held from April to July 2012, located in the seed processing unit of PT Astra Agro Lestari Tbk, Central Borneo. The study consisted of three experiments, the first experiment to determine the effect of water temperature and immersion intensity of seed germination. The first experiment used completely randomized design (CRD) factorial with two factors, water temperature: 27, 60, 70, 80, 90 oC and immersion intensity: 1x24, 2x24, 3x24 hours. The second experiment used a single factor of CRD namely ethephon concentration: 0, 0.4, 0.8, 1.2, 1.6%. The third experiment was a continuation from the second experiment with the adding heat drying treatment during a week. The result showed that 3x24 hours soaking treatment in 80oC hot water increased the germination, soaking in ethephon 0.4% inhibited radicle growth resulted abnormal seedlings. Soaking seed in 80oC hot water for 3x24 hours and followed by ethephon and then heat drying treatment for a week increased germination (52.0% maximum growth potential) but still ineffective to break seed dormancy
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Judul: Pematahan Dormansi Benih Kelapa Sawit (Elaeis guineensis Jacq) dengan Perendaman dalam Air Panas dan Giberelin
Abstrak: This research was conducted at Seed Processing Unit PT Astra Agro Lestari Tbk, Pangkalan Bun, Central Borneo on May-August 2014. The purpose of this research was to study dormancy breaking methods of oil palm seeds by hot water soaking and gibberellin application. The experiment was arranged in a completely randomized design with two factors. The first factor was water soaking intensity, consisted of five levels (seeds were soaked in water at 26 ˚C for 7 days [P0], seeds were soaked in 80˚C hot water for 3x24 hours [P1], P1 + water at 26 ˚C for 2 days [P2], P1 + water at 26 ˚C for 4 days [P3], dan P1 + water at 26 ˚C for 6 days [P4]). The second factor was soaking in gibberellin (0, 50, and 100 ppm) after water soaking treatment. The result showed that gibberellin application did not give significant effect on germination of oil palm seed. Seeds of crossing number 2 which was soaked in hot water for 3x24 hours (P1) or seeds of crossing number 5 which was soaked in hot water for 3x24 hours then in water at 26 ˚C for 6 days (P4) were considered as the best treatments with average germination of 41% and 41.6%. However, the percentage of seeds attacked by fungi in treatment P4 was higher (2.3-2.7%) compared to P1 (0-0.7%). Total time required for dormancy breaking and germination by soaking in hot water was faster (46 days) than conventional method (113 days). However, germination percentage of oil palm seeds soaked in hot water was still low (42%), compared to the conventional method (74.7%).
Keyword: breaking dormancy time, conventional method, germination, soaking intensity

Judul: Cycle Hamilton pada Graf Lengkap, Graf Regular, dan Graf 2-Connected 4-Regular Berorder Kurang dari Sepuluh.
Abstrak: Suatu graf disebut graf Hamilton apabila graf tersebut memuat cycle Hamilton, yaitu cycle yang melewati setiap vertex tepat satu kali. Menentukan keberadaan cycle Hamilton pada suatu graf dapat menggunakan syarat cukup yang berupa teorema-teorema yang telah diperkenalkan sejak tahun 1950-an. Beberapa syarat cukup yang dibahas dalam karya ilmiah ini adalah syarat cukup yang berhubungan dengan graf lengkap dan graf regular. ,,,
Keyword: graf Hamilton, graf regular, graf lengkap, graf 2-connected 4-regular.