Judul: Performa Reproduksi Ikan Mas (Cyprinus carpio L) Jantan Transgenik Hormon Pertumbuhan Generasi Kedua
Abstrak: Fertility and viability are common parameters used to evaluate environmental safety as well as breeding potency of transgenic organisms. This research was performed to evaluate the reproductive performance of F2 generation GH (growth hormone) transgenic male common carp. This research used completely random design with two factors (transgenic and non-transgenic) and three replications. Three GH transgenic male common carp (TGJ) and three non-transgenic (NTJ) fish were crossbred with two non-transgenic female common carps (NTB), resulting 12 families. Parameters observed were semen volume, motility, duration of motility, number of sperm cells, survival of embryo, hatching rate, survival of larva until 3 days old, and morphology of sperm and larva. The results showed that semen volume of TGJ and survival of juvenile in 30 days was higher compared to NTJ (p<0,05), while motility rate, duration of motility, number of sperm cells, survival of embryo, hatching rate, and survival of larva were similar (p>0,05). Furthermore, there were no abnormalities found in sperm morphology of TGJ and the hatched larva of TGJ x NTB crossbred were the same with NT. As the conclusion, reproductive performance of GH transgenic male common carp showed good and similar result with the non-transgenic fish.
Keyword: reproductive performance, male broodstock, tiGH gene, common carp

Judul: Pertumbuhan, Efisiensi Pakan, Kelangsungan Hidup, dan Tingkat Stres Ikan Mas Cyprinus carpio L Transgenik Hormon Pertumbuhan pada Pemeliharaan Suhu Rendah
Abstrak: Growth hormone has been reported to be able to increase fish adaptability to the environment. The purpose of this research was to evaluate the growth performance, feed efficiency, survival rate, and stress level of growth hormone transgenic common carp reared in low temperature (15±0.3 °C). The design used in this research was completely randomized design consisted of 2 treatments (transgenic and non-transgenic) and 3 replications. Transgenic and non-transgenic common carp were reared in 30x25x30 cm3 sized tanks with stocking density of 10 fishes/tank for 30 days. The results showed that there was no significant differences in growth between transgenic and non-transgenic fishes (p>0.05). The survival rate of both transgenic and non-transgenic fishes was 100%. There was also no significant difference found in total feed consumption of transgenic and non-transgenic fishes (p>0.05) and it was 3.43±0.01 g for transgenic and 3.71±0.16 g for non-transgenic. Similar result was also found in feed efficiency between transgenic and non-transgenic fishes (p>0.05), 86.85±14.03% for transgenic and 70.57±8.36% for non-transgenic. Resistance against stress of transgenic fish was presumed higher compared to non-transgenic fish indicated by significant difference in their blood glucose level (p<0.05). Glucose level of transgenic fish (51.56±7.40 mg/dL) was lower compared to non-transgenic fish (90.78±12.44 mg/dL). It could be concluded that transgenic common carp reared in low temperature was presumed has higher resistance against stress compared to non-transgenic fish, meanwhile the survival rate, growth, and feed efficiency of transgenic and non-transgenic common carp were similar.
Keyword: Bogor Agricultural University (IPB), transgenic., low temperature, growth, common carp

Judul: Simulasi Vaiabel Iklim pada Erupsi Gunung Api dengan Model WRF-Chem (Studi Kasus: Erupsi Gunung Kelud 13 Februari 2014)
Abstrak: Indonesia sering mengalami gempa tektonik maupun vulkanik karena dilalui oleh “Cincin Api Pasifik”. Letusan gunung api merupakan salah satu bencana alam yang perlu diwaspadai. Langkah preventif telah dilakukan oleh Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG) seperti penempatan alat observasi di 69 dari 127 gunung api aktif di Indonesia untuk mengukur seismik. Salah satu gunung api aktif di Indonesia adalah Gunung Kelud. Gunung Kelud terakhir meletus pada tanggal 13 Februari 2014 pukul 22.50 WIB. Penelitian mengenai deteksi dan prediksi aktivitas gunung api sering dilakukan oleh peneliti vulkanologi dengan mengamati parameter geofisika: seismik, deformasi tanah, perubahan gravitasi, suhu air kawah, warna air kawah, dan tinggi muka air tanah. Akan tetapi, penelitian tentang gunung api terkait dengan deteksi aktivitas vulkanik masih jarang dan umumnya terkait dengan perubahan iklim. Peneliti mengembangkan dan menggunakan model-model iklim dan satelit untuk mempelajari dampak erupsi gunung api terhadap iklim dan mendeteksi aktivitasnya. Model iklim, seperti Weather Research Forecasting (WRF) berpotensi digunakan untuk mendeteksi erupsi gunung api melalui pendekatan deteksi perubahan titik (change-point detection). Penelitian ini bertujuan mengevaluasi dan mendeteksi perubahan data deret waktu dari luaran WRF-Chem pada kejadian erupsi Gunung Kelud 13 Februari 2014 dengan variabel iklim yang dianalisis, yaitu suhu permukaan tanah, suhu udara, dan kelembapan relatif. Metode yang dipilih untuk mendeteksi perubahan data deret waktu adalah Noise-Based Change Point (NBCP), sedangkan untuk evaluasi model adalah koefisien korelasi Pearson (r) dan root mean square error (RMSE). Model WRF-Chem membutuhkan data masukan berupa data cuaca dan kimia vulkanik, yaitu Global Forecast System (GFS) dan Eruption Source Parameters (ESP). Data pendukung seperti produk MODIS yang dianggap sebagai data observasi diperlukan untuk menilai kemampuan dari WRF-Chem untuk waktu analisis mulai 1 Desember 2013 00.00 UTC hingga 22 Maret 2014 23.00 UTC. Penggunaan parameterisasi di dalam simulasi WRF-Chem dipilih berdasarkan penelitian sebelumnya dan dievaluasi dengan data lapangan yang dilakukan pengukuran pada 31 Juli 07.00 WIB – 1 Agustus 2019 06.55 WIB. Hasil simulasi WRF-Chem pada 31 Juli 07.00 WIB – 1 Agustus 06.55 WIB menunjukkan suhu permukaan tanah, suhu udara, dan kelembapan relatif sesuai dengan pengukuran lapangan (r = 0,94; RMSE = 1,97oC, r = 0,97; RMSE = 0,63oC, r = 0,89; RMSE = 9,44%). Ketika dievaluasi menggunakan data MODIS, hanya suhu udara yang sesuai (r = 0,99; RMSE = 2,81oC), sedangkan belum sesuai pada suhu permukaan tanah dan kelembapan relatif. Hasil perhitungan dengan metode NBCP dan smoothing bahwa terdeteksi perubahan meningkat pada suhu permukaan tanah pada 22 Januari 2014 00.00 UTC atau 22 hari 15 jam sebelum erupsi., Indonesia frequently experiences tectonic and volcanic earthquakes because it is traversed by the "Ring of Fire". Volcanic eruption is a natural disaster that needs to be alert. Preventive approach was taken by the Center for Volcanology and Geological Hazard Mitigation (CVGHM) such as installing the observation instruments at 69 of 127 Indonesia volcanoes to measure seismic. One of active volcanoes in Indonesia is Mount Kelud. Mount Kelud last erupted on February 13, 2014 22.50 WIB. Research on detection and prediction of volcanic activity is often carried out by volcanology researchers by observing geophysical parameters: seismic, soil deformation, gravity change, crater water temperature, crater
Keyword: air temperature, land surface temperature, noise-based change point, relative humidity