Judul: The Use Of B-Glucan As An Immunostimulant  To Increase The Non-Specific Iivimunity And  The Performance Of Shrimp  (Penaeus Monodon, Fab.)  Under Artificial Stress Condition
Abstrak: Environmental stress has been a colnmon risk in shrimp culture ponds. This stress could lead to the occurrence of diseases. The experiment was divided into three trials. The objective of the first trial was to investigate the effect of oxygen concentration. water salinity, and luniinous bacteria concentration on some parameters of stress condition i.e. hemocyte count, survival rate, and number of luminous bacteria (Kbrio splendidus biovar 1 ) in hemolymph. The result of this trial could be used as a fit stressor in an advanced trial. The second trial was to investigate the effect of P-glucan on some parameters of shrimp performance i.e. growth and feed conversion ratio. The third trial had an objective to study the affectivity of (3-glucan given in 1 and 2 months on some parameters of shrimp immune system i.e. hemocyte count. phagocytic activity, clearance bacteria, and survival rate at low oxygen concentration. The experiment was an advanced experiment using the worst condition resulted by trial 1.
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Judul: Parameter imunitas, sintasan, dan pertumbuhan udang galah Macrobrachium rosenbergii yang diberi pakan dengan suplementasi β-glukan 0%, 0,075%, 0,15%, dan 0,225%
Abstrak: Giant freshwater prawn Macrobrachium rosenbergii is one of the prioritized freshwater commodities with high economical value in Indonesia. This study evaluated the effect of β-glucan supplementation (0%, 0,075%, 0,15%, and 0,225%) on the immune parameters, survival, and growth of giant freshwater prawn. Giant prawn juvenile with an initial body weight of 1.25 ± 0.041 g was stocked in a 150 Litre aquarium with a density of 16 animals/aquarium. Phenoloxydase activity, total and differential haemocyte counts, survival, and specific growth rate were measured and calculated on the final day of experiment (day 42). Phenoloxydase activity, total and differential haemocyte counts of glucan treatments were higher than control (0%), whereas no significant difference was observed in survival. Administration of β-glucan for 42 days resulted in a higher prawn growth rate (p<0.05) with the highest yield observed was on β-glucan 0,015% treatment.
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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. Suatu graf lengkap berorder 𝑛������ ≥ 3 dan graf r-regular berorder 𝑛������ ≤ 2𝑟������ + 1 merupakan graf Hamilton, Karena kedua graf tersebut memuat cycle Hamilton. Selanjutnya, syarat cukup tersebut digunakan untuk menentukan keberadaan cycle Hamilton pada graf 2-connected 4- regular berorder kurang dari 10.
Keyword: graf Hamilton, graf regular, graf lengkap, graf 2-connected 4-regular