Judul: Bahan kebutuhan melaut perikanan pancing rumpon di PPN Palabuhanratu Sukabumi
Abstrak: Rumpon (Fish Aggregating Devices/FADs)-based fishing has begun to be expanded by fishermen at the Palabuhanratu, especially at the Gulf Palabuhanratu since 2004. One of the fishing tools that used on FADs is trolling lines, known as FADs fishing by fisherman communities at PPN Palabuhanratu. And the fishing supplies have had important role in supporting fishing activities. So the objective of the research was to determine the scale of the type, cost, mapping, and development strategies of supply/distribution of fishing supplies on FADs fishing at PPN Palabuhanratu. The method used was descriptive method with case studies. Type and cost of fishing supplies on FADs fishing per trip at PPN Palabuhanratu is 500 liters diesel fuel at a cost of IDR 2.274.000; 54 ice blocks at a cost of IDR 837.000; 442 liters clean water at a cost of IDR 17.800; and food stuff at a cost of IDR 880.000. Fishermen that use FADs obtain fishing supplies from inner and outer port which have varying distance from FADs fishing boat concentration : diesel fuel obtained from SPBB (is about 430 m), SPDN (is about 40 m), and SPBU (is about 200 m); ice blocks obtained from PT. Tirta Jaya (is about 2,43 miles) and PT. Sari Petojo (from the north is about 43,26 miles and from the south is about 42,66 miles); clean water is sourced from PDAM, maintained by CV. Eko Mulyo which is about 55 m; whereas food stuff obtained from market which is about 175 m. There are few challenges and threats in the development supply/distribution of FADs fishing supplies. The strategy that can be done by the suppliers/distributors of fishing supplies and PPN Palabuhanratu administrator is increasing the fishing supplies facility for FADs fishing at PPN Palabuhanratu.
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Judul: Efektivitas Pancing Terhadap Hasil Tangkapan Tuna Disekitar Rumpon yang Didaratkan di PPN Palabuhanratu Sukabumi
Abstrak: Research on the rumpon fishing for tuna catches was conducted in Palabuhanratu Sukabumi. Line fishing with rumpon (FADs) comprises with five type of fishing (trolling line, taber,coping,jerigen and fishing line with kites) which operate around rumpon. The objectives of the research are to determine the percentage composition of the tuna caught operated with rumpon and to examine the effectiveness of line fishing using rumpon in catching tuna. The survey method was used in the research and data collection is carried out by using purposive sampling. The results of this study indicate that catch of line fishing with rumpon consists of skipjack, yellowfin and bigeye with the total 24% which landed at PPN Palabuhanratu. The proportion of skipjack is 40.6%, yellowfin 37.6% and bigeye 21.6%. Effectiveness of line fishing with rumpon was obtained of 24% with the highest effectiveness of tuna catch in August around 58% and the lowest value in December at 9%.
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Judul: Mathematical model of Hematopoietic Stem Cell in Chronic Myelogenous Leukemia with and without Therapy
Abstrak: Leukemia or blood cancer is a diverse group of neoplastic disease, characterized by the multiplication of abnormal leukocytes or malignant transformation of blood-forming cells in bone marrow and lymphoid tissues. One of the most common types of leukemia is Chronic Myelogenous Leukemia (CML), which is usually diagnosed by the presence of certain chromosomal abnormalities, the so-called Philadelphia chromosome (Ph). One of the treatments of CML is Granulocyte Colony-Stimulating Factor (G-CSF). In this paper, we discuss two Hematopoietic Stem Cell (HSC) models, i.e. HSC without treatment and HSC with G-CSF treatment. The model of HSC without treatment included three equations representing the dynamics of HSC, leukocyte and platelet. Whereas, the model of HSC with G-CSF treatment includes the previous three equations and adds two more equations representing G-CSF injection and G-CSF circulation. The stability behavior of the system approaching the equilibrium points in the simulation study is carried out using Mathematica 7.0. The simulation results show that the G-CSF treatment can successfully decrease the number of HSC, which means reducing the CML.
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