Judul: The Difference of Eel’s Green Fluorescent Protein in Glass Eel Phase
Abstrak: Green Fluorescent Protein (GFP) merupakan protein yang dapat berpendar pada makhluk hidup. GFP yang berikatan dengan bilirubin dapat membuat tubuh sidat berpendar hijau apabila diberi cahaya biru. Dasar pengetahuan ini dapat dimanfaatkan sebagai salah satu solusi alternatif dalam penyortiran, penghitungan dan identifikasi spesies glass eel. Tujuan penelitian ini adalah menentukan metode konversi data yang tepat dalam pengolahan data GFP pada glass eel dan mengidentifikasi perkembangan warna pendar GFP pada glass eel. Penelitian dilakukan di laboratorium dengan metode eksperimental. Analisis data yang digunakan adalah analisis deskriptif dan analisis statistik dengan uji H Kruskal Wallis. Hasil penelitian menunjukkan bahwa fitur Plot profle pada perangkat lunak ImageJ merupakan metode konversi data yang tepat dalam pengolahan data GFP glass eel. Fitur ini menghasilkan nilai deviasi standar dan kesalahan standar dalam rentang 2,83 - 19,43 dan 1,27-8,69 kedua nilai tersebut lebih kecil dari nilai yang dihasilkan fitur Measure dan fitur Histogram. Terdapat perbedaan yang nyata antar data GFP pada ketiga fitur Measure, Plot profile dan Histogram dalam kurun waktu 30 hari (P < 0,05, uji H Kruskal-Wallis). Pergerakan perkembangan data GFP ketiga fitur tersebut berfluktuasi dengan kecenderungan meningkat seiring bertambahnya waktu pemeliharaan glass eel., Green Fluorescent Protein (GFP) is a protein that can glow in living things. GFP which binds to bilirubin can make the body of the eel glows green when given the blue light. This knowledge base can be used as an alternative solution for sorting, counting, identifying species of glass eels. This study aims to determine the appropriate data conversion method in the processing of GFP data and to identify the development of GFP glow color on glass eels. The study was conducted in the laboratory using experimental methods. Data analysis was performed using descriptive analysis and Kruskal-Wallis H test analysis. The results showed that the Plot Profile feature in ImageJ software was an appropriate data conversion method for processing GFP glass eel data. This feature generates standard deviation and standard error values in the ranges 2.83-19.43 and 1.27- 8.69. Both are smaller than values generated by the Measure and Histogram feature. There were significant differences between GFP data on three processing Measure, Plot profile and Histogram features within 30 days (P<0.05, Kruskal-Wallis H test). The movement of the GFP data development for these three features fluctuated with a tendency to increase as the accruing upkeeping time of glass eels.
Keyword: GFP, Glass Eel, Konversi, Pengolahan, Perkembangan, conversion, development, GFP, glass eel, processing

Judul: Eel Fish Response (Anguilla sp.) Glass Eel Stadia against Different Light Colors
Abstrak: Respons ikan sidat (Anguilla sp.) stadia glass eel terhadap cahaya yang berbeda merupakan pengetahuan dasar untuk mengembangkan metode penangkapan ikan dan konservasi sumberdaya ikan. Tujuan penelitian ini adalah mendeskripsikan respons ikan sidat stadia glass eel terhadap cahaya yang berbeda. Pengamatan respons glass eel terhadap cahaya LED merah, biru, dan putih dibandingkan dengan tanpa cahaya sebagai kontrol dilakukan di laboratorium. Glass eel yang digunakan berukuran 4.0-6.1 cm sebanyak ±700 ekor yang ditangkap dari muara Sungai Cimandiri Pelabuhanratu. Pengamatan dilakukan selama 31 hari dimulai dari 5 hari setelah penangkapan glass eel. Respons glass eel terhadap cahaya dianalisis secara deskriptif dengan uji Mann Whitney dan Kruskal-Wallis. Pengamatan menunjukkan bahwa glass eel lebih banyak merespons pada zona gelap dengan nilai diatas 80% bila dibandingkan dengan zona yang diberi cahaya lampu LED merah, biru, dan putih. Persentase jumlah ikan pada lampu LED merah sebesar 23±0.22% lebih tinggi dengan jumlah ikan pada lampu LED biru sebesar 10±0.21% dan lampu LED putih 8±0.15% (p<0.05, Kruskal-Wallis). Perbedaan respons terhadap cahaya dapat digunakan untuk aplikasi penangkapan glass eel khususnya penggunaan lampu untuk alat bantu dan konservasi ikan sidat untuk membuat zona penangkapan dan jalur ruaya sidat., The response of eel fish (Anguilla sp.) glass eel stadia to different light is a basic knowledge to develop methods of fishing and conservation of fish resources. The purpose of this study is to describe the response of eel stadia glass eel fish to different light. Observations of glass eel response to red, blue, and white LED light compared to without light as controls were carried out in the laboratory. Glass eel used measuring 4.0-6.1 cm as much as ±700 heads were caught from the estuary of Cimandiri River of Pelabuhanratu. Observations were made for 31 days starting from 5 days after the capture of the glass eel. The glass eel's response to light was descriptively analyzed with the Mann-Whitney and Kruskal-Wallis tests. Observations showed that glass eels responded more to dark zones with values above 80% when compared to zones given red, blue, and white LED light. The percentage of fish in red LED lights was 23±0.22% higher with the number of fish on blue LED lights by 10±0.21% and white LED lights 8±0.15% (p<0.05, Kruskal-Wallis). The difference in response to light can be used for glass eel catching applications, especially the use of lamps for eel fish aids and eel conservation to create fishing zones and eels.
Keyword: Anguilla sp., eel behavior, glass eel, LED light, response to light

Judul: Thermal Characteristics and Dynamics of Tropical Cyclone over Western North Pacific Ocean: A Case Study of Typhoon Songda (Chedeng) 2011
Abstrak: The frequent occasion of Tropical Cyclone (TC) over Western North Pacific (WNP) Ocean lies from 10˚N to 26˚N and 121˚E to 170˚E. Sources of TC development come from warm ocean temperature where latent heat is released during condensation processes and subsequently concentrated in the boundary layer. Relative humidity at 850-700 hPa is responsible to produce the most intense storm. Meanwhile, weak vertical wind shear between 850-200 hPa is one of the dynamical factors that lead to the development of TC. Pressure level of 850-200 hPa is chosen to minimize the thermodynamic effect in the lower troposphere. Typhoon Songda (Chedeng in the Philippines) or TSC lasted from May 18th to 30th, 2011 and strengthened into powerful Super Typhoon stage between May 24th and 27th. Long curving track and the exhibition of all sequences of TC life cycle, TSC is then considered as an ideal case of TC. The objective of the study with case of TSC is to investigate the role of thermal characteristics and dynamics on TC intensity. The research is carried out by using Advanced Research of Weather Research and Forecasting model (WRF ARW model) version 3.3. Two domains are employed in the model. The first domain situate from 02˚N to 40˚N and 118˚E to 149˚E and cover spatial resolution () of 33.1 km. The second domain situate from 09˚N to 27˚N and 119˚E to 132˚E with of 11 km. Timestep of the model () is 120 seconds. The model is supported by the following physical parameterization, i.e., Yonsei University Scheme (YSU) in the boundary layer, Kain-Fritsch scheme (KF) in the cumulus, and WRF Single-Moment 3-class scheme in the microphysics. Initial meteorological condition prior to the formation of the cyclone is generated using WRF ARW standard-release model. Sensitivity of the model output is obtained from a selected single-parameter change scenarios, namely, 10 % to 20 % decrease and increase of wind shear initial data at 850-200 hPa, and by 10 % to 20 % decrease of relative humidity initial data at 850-700 hPa. The result showed that the negative correlations between wind shear and intensity are found in wind shear scenarios. Wind shears of 10 ms-1 which lead to strengthening of the wind intensity in the early period of Typhoon development are found in wind shear scenarios. The effect of wind shear changes on wind intensity is statistically significant in the 20 % wind shear scenarios. During mature stage, weak wind intensity occurred when wind shear increase as given in the WRF standard-release and the 20 % decreasing scenario. Different situation is found in the 20 % increasing scenario where wind shear tend to weak and lead to strong wind intensity at this stage. Meanwhile, the reduction of moisture supply at 850-700 hPa resulting from 20 % decreasing relative humidity play a major role in the weakening of wind intensity and reduces mechanical energy of the cycle process as much as 300 J kg-1.
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