Judul: Aplikasi Citra ALOS PALSAR Multiwaktu Resolusi 50 m dalam Identifikasi Tutupan Lahan di Provinsi Lampung
Abstrak: Land cover change is a state of land in which changes occured through passing time due to human activities (Lillesand & Kiefer 1990). Land cover change has different change dynamics between one land to another, that it requires continuous monitoring to observe those changes. The use of remote sensing technology had become a very important part in the mapping of land-closure and land-use, as well as land cover changes associated with the study of vegetation, crops and soil of the biosphere. Cloud cover had posed obstacles in the use of LANDSAT and SPOT optical imagery in Indonesia. Active remote sensing systems (radar) which has the ability to one way technology to overcome the obstacles. In 2006, the Japanese government launched a satellite named ALOS (Advanced Land Observing Sattelite) that carries the radar sensor (JICA 2011). One of the sensor types is PALSAR (Phased Array Type L-band Shynthetic Aperture Radar) operating each year, so it can be used for monitoring land cover change. This study aimed to analyze land cover change and identity the dynamics of changes in one year periods of 2007-2008 and 2008-2009, as well as the two-year period of 2007-2009 using multitime ALOS PALSAR image with spatial resolution of 50 m in Lampung province. Field research was conducted on August 10th until 18th 2012 in Lampung province. The method of this research is visual analysis of land cover change combining RGB HH-HV-HH/HV 1:50.000 scale and matrix of land cover change. The results of the visual analysis of ALOS PALSAR imagery in 50 m resolution showed 17 land cover classes namely water, airport, dry land forest, swamp forest, plantation forest, multiplants field, pineapple field, sugarcane field, open land, savanna, rubber wood plantation, oil palm plantation, settlements, dry land farming, paddy fields, scrub / shrub wetlands, and ponds. The pattern of changes observed in Lampung province was a drastic change in which open land changed into a vegetated land or otherwise vegetated land changed into open land. Based on the type of land cover, the change of land cover in Lampung both in one year and two years periods had the similar kind of change, which was transformation from open land into sugarcane field, open land into pineapples field, sugarcane field into open land, pineapple field into open land, and rubber wood plantation into open land.
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Judul: Aplikasi dan Evaluasi Citra ALOS PALSAR Resolusi 50 m, Resolusi 12,5 m, dan Resolusi 6 m untuk Identifikasi Tutupan Lahan (studi kasus di Kabupaten Humbang Hasundutan, Kabupaten Tapanuli Utara, dan Kabupaten Samosir)
Abstrak: The application of remote sensing technology for rasionalization land resources data usage has more benefit than data collecting in conventional ways. Remote sensing techniques have been used in Indonesia for forest inventory and forest resources monitoring. Indonesia‟s geographical position where is in the tropics area that has vast cloud cover limits the use of optical satellite image data. To overcome the optical satellite image weakness, active remote sensing system (radar) is currently available. One of the satellites carrying radar sensor which was launched by the Japanese government is ALOS (Advanced Land Observing Satellite) with PALSAR (Phased Array type L-band Synthetic Aperture Radar) as its one of the sensor. This sensor is an active microwave sensor which has capability to penetrate thick cloud layer. The objective of this research is to analyze the ability of ALOS PALSAR satellite image of 50 m, 12.5 m, and 6 m resolutions on land cover classification at Humbang Hasundutan Regency, North Tapanuli Regency, and Samosir Regency. The observation has delivered 16 land cover classes, which are as follow: water body, harvested rice field, cultivating rice field, just-planted rice field, bushes, coffee plantation, dry land agriculture, town settlement, village settlement, bare land, nature forest, Eucalyptus plantation year 2010, Eucalyptus plantation year 2009, Eucalyptus plantation year 2006, Eucalyptus plantation year 2007, and Eucalyptus plantation year 2008. The result of digital interpretation of the ALOS PALSAR satellite image 50 m, 12.5 m and 6 m resolutions obtained 6 classes of land cover which are as follows: water body, rice field, dry land agriculture, settlement, bare land, and tree vegetation by different value of proportion correct. ALOS PALSAR of 50 m, 12.5 m and 6 m resolutions, each has proportion correct in consequence 62.1%, 50.5% and 68,9% Visual analysis, the result of ALOS PALSAR image with resolution 50 m obtained 8 classes of land cover,which are as follows: water bodu, dry land agriculuture, settlement, harvested rice field, young forest plantation, middle-old forest plantation, nature forest, dan bare land. Whereas, accuration and separability analysis of ALOS PALSAR image of 50 m resolution has regular accuracy value 59.15% and kappa accuracy 53.48%. The result of the interpretation raising-ability analysis of ALOS PALSAR image of 12.5 m and 6 m resolutions to the ALOS PALSAR image of 50 m resolution are able to provide additional land cover classes, clarify the delineation and make easier the identification of land cover at the satellite image.
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Judul: Definisi zat besi ( Fe ) pada anak babi
Abstrak: Dalam bidang sub sektor peternakan, ternak babi mempunyai prospek yang cukup baik untuk dikembangkan dalam rangka meningkatkan eksport non migas. Namun anak-anak babi yang sedang menyusu sering mengalami defisiensi zat besi (Fe). Bila masalah ini tidak segera ditanggulangi, peternak akan mengalami kerugian. Zat besi dapat diperoleh dari makanan yang berasal dari hewan (tepung tulang, tepung ikan, tepung daging, "skimmed milk"); tumbuh-tumbuhan (leguminosae, rumput-rumputan, biji-bijian) dan mineral alam (Girindra, 1979). Dalam tubuh hewan, zat besi berperanan sebagai pembawa 02 ke seluruh jaringan, juga sebagai pembawa oksigen pernafasan di dalam sel urat daging (Underwood, 1981). Dalam duodenum dan yeyenum bagian atas, besi dalam bentuk ferro akan diserap. Penyerapan ini akan diatur berdasarkan teori "mucosal block" dari Granick. Kemudian dalam plasma darah, besi akan berikatan dengan B₁ globulin dan membentuk transferrin, yang akan segera dibawa ke seluruh jaringan. Kelebihan besi akan diikat oleh apoferritin dan membentuk ferritin yang ditimbun sebagai besi cadangan, terutama di hati. Bila kapasitas besi yang dapat disimpan sebagai ferritin telah jenuh, maka besi akan ditimbun sebagai hemosiderin. Zat besi dalam jumlah yang sedikit akan diekskresikan melalui pengelupas- an epitil, tinja, air kemih, cairan empedu, keringat. ...
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