Judul: Variasi Karakter Morfologi Lyriomyza spp. (Diptera : Agromyzidae) dari Tanaman Inang dan Lokasi Berbeda
Abstrak: Penelitian ini bertujuan untuk mengetahui variasi karakter morfologi Liriomyza spp.(Diptera:Agromyzidae) dari tanaman inang dan lokasi yang berbeda. Penelitian ini dilakukan mulai bulan Maret-Juni 2000 di Laboratorium Taksonomi Serangga Jurusan Hama dan Penyakit Tumbuhan, Institut Pertanian Bogor serta beberapa tempat pengambilan sampel yang meliputi lokasi Pengalengan dan Cipanas (Jawa Barat), Wonosobo (Jawa Tengah), dan Malang (Jawa Timur).
Keyword: 

Judul: Survei Parasitoid yang Berasosiasi dengan Liriomyza spp (Diptera: Agromyzidae) pada Tanaman Sayuran di Berbagai Lokasi di Jawa Barat
Abstrak: Leafminer Liriomyza spp is one of the important pests ofvegetables . These pest is native to Americas and arrived in Indonesia in 1990’s through trade of cut flowers and fresh vegetables from Europe.The pests have spread throughout Indonesia.The purpose of this research was to study diversity of parasitoids associatied with Liriomyza spp on variousvegetable crops .This study was conducted in West Java from July to December 2013.Leaf samples were taken from the center of vegetable crops and some horticultural crops in lowland, medium land and highland.The number of leaf samples taken around 20-30 and 30-40 leaves attacked by Liriomyza spp. and parasitoid and then observed for species identification. From these observations, it was found three species of Liriomyza spp. and parasitoid and then observed for species identification. From these observations,it was found three species of Liriomyzaspp. Lriomyza chinensis, Liriomyza sativae, and Liriomyza huidobrensis. L. chinensis is monophagous and only attack shallot and green onion, while L. huidobrensis attack all vegetables from the high land and L.sativae attack all vegetables plants from lowland. Fivespecies of parasitoidswere found.Hemiptarsenus varicornis,Chrysocharissp.and Neochrysocharis sp. were the dominant species living in the lowlands to highlands, Asecodes sp., and Closterocerus sp., The remainingswereGronotoma sp. (Eucolidae) and Opius sp. (Braconidae ).
Keyword: parasitoid., Liriomyza spp, leafminer

Judul: Separation of Neodymium from U3Si2/Al Fuel Plate for Burn-Up Determination
Abstrak: Neodymium is a common fission product produced in nuclear fission reactions. Neodymium in this study was chosen as a burn-up indicator for U3Si2/Al fuel element plates because the neodymium isotope is a stable fission product with a fairly high yield. Some procedures were carried out to separate neodymium, starting with the separation of cesium isotopes (137Cs, 134Cs) through the precipitation method, then separation of uranium isotopes (235U, 238U) and plutonium isotopes (239Pu, 238Pu) with Dowex 1x8 ion exchange resin, and separation of neodymium (Nd), samarium (Sm), as well as cerium (Ce) with Dowex 1x4 ion exchange resin. The Cs recovery reached 99.95%. The U and Pu isotopes resulting from the separation are subjected to an electrodeposition process and the weight of each isotope can be measured with an alpha spectrometer. The separation results of Nd from Sm and Ce have been proven using an XRF spectrometer. The neodymium isotopes separation was corrected using the standard addition method, and an average total Nd content of 2.4 ppm was obtained in the PEB U3Si2/Al bottom solution. It is hoped that this separation method can be applied in determining burn-up of nuclear fuel.
Keyword: neodymium, burn-up indicator, U3Si2/Al fuel plate