Judul: Penurunan nilai albedo dan suhu permukaan dari data Terra MODIS L1B untuk klasifikasi awan
Abstrak: Clouds affect the energy balance in atmosphere through absorbtion, reflection and solar radiation process. These processes affect albedo values and the cloud surface temperature. The differences between albedo values and surface temperature can be the indicator in cloud classification and can be the separation between the cloud covered area and non-cloud covered area. Terra MODIS L1B data can be used for classifying between cloud and non-cloud using reflectant information at wavelength 0.62 μm to 0.67 μm, 0.459 μm to 0.479 μm, and 0.545 μm to 0.565 μm and the extraction of surface temperature using wavelenght 10.780 μm to 11.280 μm dan 11.770 μm to 12.270 μm. Yet, before the classification process, it is needed to look at the response of each wave lenght to the same object at the same location. Cloud‟s surface temperature can be derived from canal 31 and canal 32. The error values of both canal are 1.7 K on Januari 1st 2008, 3.3 K on March 26st 2008, 1.7 K on November 2st 2008, 5.6 K on April 6st 2008, and 12.8 K on September 24st 2008. Albedo value can be derived from band 1, band 3, band 4 since the values distribution pattern of all these canal are relatively in common. The results of the relation between reflectance bands and thermal bands show that the albedo approach method and surface temperature approach method can be used for clouds classification. The classification using albedo approach method is the based on the thickness of the clouds, while the surface temperature approach method is based on the height of clouds.
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Judul: Analisis perubahan albedo, suhu permukaan dan suhu udara sebagai dampak perubahan penutupan lahan menggunakan data citra satelit landsat
Abstrak: Suhu permukaan dan suhu udara suatu wilayah dipengaruhi oleh strata tutupan lahan. Strata tutupan lahan terbagi atas tiga yaitu badan air, lahan vegetasi, dan lahan terbangun. Tujuan penelitian ini adalah mengetahui pengaruh perubahan parameter fisik yaitu albedo, suhu permukaan dan suhu udara sebagai dampak perubahan penutupan lahan dan mengetahui perubahan pola distiribusi suhu udara yang disebabkan perubahan lahan. Data yang digunakan merupakan data citra landsat pada tahun 1997, 2000, 2009, dan 2013. Parameter fisik dihasilkan dari hasil pengolahan spectral radiance resolusi resample dari 30 m x 30 m menjadi 250 m x 250 m. Nilai albedo dan suhu udara diduga menggunakan band visible (landsat 5 dan 7 band 3, 2, 1) sedangkan nilai suhu permukaan diduga menggunakan band thermal (landsat 5 dan 7 band 6). Distribusi spasial suhu udara diturunkan dengan menggunakan interpolasi idw (inverse distance weighted). Hasil analisis menunjukkan bahwa pada tahun 1997, 2000, 2009 dan 2013 rata-rata albedo yaitu badan air (0.054, 0.050, 0.052 dan 0.056), lahan vegetasi (0.092, 0.083, 0.089 dan 0.098), lahan terbuka (0.187, 0,118, 0.106 dan 0.134). Rata-rata suhu permukaan yaitu 26,1oc, 24,4 oc, 26,5 oc, dan 31oc. Rata-rata suhu udara yaitu 29 oc, 27 oc, 28 oc dan 29 oc. Penurunan luas lahan terbuka sebesar 7% menjadi lahan vegetasi (1997-2000) yang disebabkan lahan vegetasi menyebabkan nilai albedo,suhu permukaan dan suhu udara mengalami penurunan. Penurunan lahan vegetasi sebesar 4% (2000-2009) yang disebabkan pembukaan lahan menyebabkan nilai albedo, suhu permukaan dan suhu udara mengalami kenaikan. Peningkatan lahan terbuka sebesar 6% (2009-2013) menyebabkan nilai albedo, suhu permukaan dan suhu udara mengalami kenaikan. Peningkatan lahan terbuka pada tahun 2000-2009 memiliki nilai spesifik suhu permukaan yaitu 7,94x106 0c/ha. Peningkatan lahan terbuka pada tahun 2009-2013 memiliki nilai spesifik suhu permukaan yaitu 9,03x106 0c/ha.
Keyword: klasifikasi lahan, albedo, suhu permukaan, suhu udara, interpolasi idw

Judul: Study on Over Expression of Gene Encoding Growth Hormone by Sperm Electroporation to Produce Transgenic Fast-Growing Stripped Catfish. Under direction
Abstrak: Stripped catfish (Pangasionodon hypophthalmus) is one of freshwater fish species that has high economic value in Indonesia. Limited attention has been paid to increase the growth of stripped catfish towards enhancement of its aquaculture productivity. In this research, we developed transgenesis technology to produce stripped catfish transgenic F0 as a material to obtain stable line transgenic fish with an improved growth rate character. Research was conducted in some steps: cloning and characterization of gene encoding stripped catfish growth hormone (PhGH), making of all–fish gene construction which consist of PhGH cDNA (complementary DNA) directed by carp β-actin promoter (pCcBA), developing electroporation technique using sperm mediated gene transfer (SMGT) and screening stripped catfish juvenile which carrying PhGH exogenous gene by PCR and RT-PCR methods. Complementary DNA encoding PhGH was isolated from pituitary by RT-PCR method. The size of PhGH cDNA was 1148 bp which consisted of 603 bp of ORF (open reading frame) and encoded 200 amino acid residues. PhGH gene has common characteristic like others teleost GH gene. To make all-fish gene construction of pCcBA-PhGH, PhGH cDNA was ligated with carp β-actin promoter (pCcBA). The size of pCcBA-PhGH construction was 6.6 kb. Increasing in electric field strength on sperm electroporation caused a decrease in sperm motility and embryos hatchling. Higher sperm motility and embryos hatchling were obtained at the electric field strength of 125 V/cm. Increasing concentrations of plasmid DNA caused an increase in the number of individuals carrying the exogenous PhGH gene. Electroporation using plasmid DNA concentration of 90 μg/ml effectively produced transgenic F0. Further, ectopic expression of exogenous PhGH in transgenic fish F0 at 2 months old increased 19-22.6% of their body weight compared to non-transgenic. Average body weight of 4 months juvenile treated with 90 μg/ml of DNA plasmid was 53.38% heavier than control. Therefore, stripped catfish growth rate could be increased by over expression of gene encoding growth hormone. Then, followed by stable transgenic stripped catfish generation, their culture production suggested to be increased significantly.
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