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UJI INTEGRITAS BAHAN BAKAR NUKLIR BEKAS (BBNB) NOMOR RI-68, RI-190 DAN RI-187 Sundari, Titik; Aji, Darmawan; Arifin, Arifin; Irzon, Yhon; Joko Puspito, Marhaeni; Kwin Pudjiastuti, S.K.M., Lucia
REAKTOR - Buletin Pengelolaan Reaktor Nuklir Vol 13, No 2 (2016): Oktober 2016
Publisher : Pusat Reaktor Serba Guna (PRSG)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17146/bprn.2016.13.2.3899

Abstract

ABSTRAK UJI INTEGRITAS BAHAN BAKAR NUKLIR BEKAS NOMOR RI-68, RI-190 DAN RI-187. Saat ini ada 245 bahan bakar nuklir bekas disimpan dengan tipe basah. Korosi galvanik antara kelongsong bahan bakar dan penyimpanan dalam rak stainless steel bisa terjadi meskipun karakteristik air kolam yang sangat baik juga akan menghambat terjadinya korosi. Korosi menyebabkan kebocoran pada bahan bakar bekas. Kegiatan uji integritas bahan bakar nuklir bekas dilakukan dengan metode uji cicip bahan bakar nuklir bekas. Uji cicip adalah metode tidak merusak yang digunakan untuk menguji bocornya bahan bakar bekas berdasarkan produk fisi yang terlepas dari kelongsong bahan bakar. Sistem uji cicip yang digunakan telah dipasang pada intermediate platform area kolam penyimpanan sementara bahan bakar nuklir bekas. Makalah ini membahas uji integritas bahan bakar nuklir bekas nomer identifikasi RI-68, RI-190 dan RI-187. Bahan bakar nuklir bekas yang diuji diambil dari rak kemudian dimasukkan ke dalam tabung uji cicip dan mengalami masa pengujian pada hari-1, ke-2, ke-3, ke-4, dan ke-8 dengan pengambilan sampel masing-masing sebanyak 500 ml air. Air uji masing-masing bahan bakar kemudian dianalisis kadar radionuklidanya menggunakan spektrometer gamma. Dari hasil analisis air uji cicip bahan bakar nuklir bekas nomor RI-68, RI-190, dan RI-187 ketiganya hanya terdeteksi radionuklida I-133 dan Sb-124 yang merupakan radionuklida yang sering terdeteksi pada air kolam. Tidak ditemukan radionuklida hasil belah lain maupun radionuklida yang terkandung dalam bahan bakar nuklir bekas pada ketiga BBNB tersebut sehingga dapat disimpulkan bahwa ketiga BBNB tersebut tidak terjadi kebocoran kelongsong bahan bakar atau dapat dikatakan mempunyai integritas yang baik.Kata Kunci: bahan bakar nuklir bekas, KH-IPSB3, analisis radionuklida, uji cicip. ABSTRACTINTEGRITY TEST OF SPENT NUCLEAR FUEL OF RI-68, RI-190 AND RI-187. Currently there are 245 bundles of spent nuclear fuel stored in the wet type. Galvanic corrosion between the fuel cladding and stainless steel storage rack can occur even though the characteristics of excellent water will also inhibit corrosion. Corrosion caused a leakage in the spent fuel. This integrity test for spent nuclear fuel is done by sipping test method for spent nuclear fuel. Sipping test is non-destructive method used to test the leaking of spent fuel based on fission product released from the cladding. This paper is aimed to discuss the integrity of spent nuclear fuel identification number of RI-68, RI-190 and RI-187. Sipping test system used has been installed at  intermediate plat-form in interim storage area for spent  nuclear fuel. Spent nuclear fuel being tested is taken from the rack and then these are put in a sipping tube. After experiencing a period of sipping on the 1st, 2nd, 3rd, 4th, and 8th day then they were do  sampling each of 500 ml. Water sample each fuel was then analyzed using a gamma spectrometer to find the radionuclides contaminant. The result of the analysis show that the spent fuel number RI-68, RI-190, and RI-187 were not detected but only I-133 and SB-124. The two are often detected in the pond water. There were not found another fission product or radio nuclides contained in spent nuclear fuel so it can be concluded that the SNF do not leak or can be concluded that this three of SNF still have a good integrity.Keywords: spent nuclear fuel, TC-ISFSF, analysis of radionuclides, sipping test.
PERUBAHAN KARAKTER AGRONOMI AKSESI PLASMA NUTFAH KEDELAI DI LINGKUNGAN TERNAUNGI Susanto, Gatut Wahyu Anggoro; Sundari, Titik
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 39 No. 1 (2011): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (151.675 KB) | DOI: 10.24831/jai.v39i1.13180

Abstract

Excessive shading during plant growth is one of the factors that might decrease the productivity of crops. The aim of this study was to determine agronomic characters of soybean germplasms grown under shaded environment. The research was carried out at Kendalpayak experimental station (grey Alluvial soil, 450 m above the sea level with C3 climate type) during dry season in Malang, from February to April 2006. The experimental design used was Randomized Complete Block Design with three replications. The genetic material observed were 120 accessions of Balitkabi?s soybean germplasm; the treatments were without shading and 50% shading using shading net. The results showed that 50% shading decreased plant age to harvest, increased plant height, and reduced the number of pods and seed weight compared to those in no shading environment. Based on Stress Tolerancy Index (STI) analysis on the seed weight per plant, fi ve accessions i.e. MLGG 0845, MLGG 3335, MLGG 0010, MLGG 0771, and Wilis demonstrated high tolerance on 50% shade
ANATOMI DAUN KACANG HIJAU GENOTIPE TOLERAN DAN SENSITIF NAUNGAN Sundari, Titik; Soemartono, ,; Tohari, ,; Mangoendidjojo, W.
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 36 No. 3 (2008): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (253.014 KB) | DOI: 10.24831/jai.v36i3.1380

Abstract

The research to study the leaf anatomy of tolerant and sensitive mungbean genotypes to shading was conducted at Research Station of the Indonesian Legume and Tuber Crops Research Institute (ILETRI) from September to December 2004. Nine tolerant genotypes to shading including MMC 87 D-KP-2, MLG 369, MLG 310, MLG 424, MLG 336, MLG 428, MLG 237, MLG 429 and VC2768B and three sensitive genotypes including Nuri, MLG 460 and MLG 330 were tested in two shading levels, i.e., 0% (control) and 52% using randomized complete block design with three replications. The results showed that the leaves of tolerant genotypes have fewer thrichomes, thicker leaves, thinner epidermis cells, longer palisade tissues and greater number of stomata than those of sensitive genotypes when  planted under shading condition.   Key words: Mungbean, leaf anatomy, tolerant, sensitive, shading
RESPONS TANAMAN KEDELAI TERHADAP LINGKUNGAN TUMBUH Taufiq, Abdullah; Sundari, Titik
Buletin Palawija No 23 (2012)
Publisher : Balai Penelitian Tanaman Kacang-kacangan dan Umbi-umbian

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Abstract

Tanaman kedelai (Glycine max L.) dapat memberikan respon positif dan negatif terhadap perubahan lingkungan tumbuh di atas tanah maupun di dalam tanah. Respon tersebut dapat diketahui dari perubahan perubahan fenotipik dan fisiologis tanaman. Lingkungan di atas tanah yang berpengaruh terhadap pertumbuhan tanaman kedelai terutama adalah lama dan intensitas penyinaran, suhu udara dan kandungan CO2 di atmosfer. Lama penyinaran yang optimal adalah 10-12 jam. Berkurangnya intensitas cahaya matahari menyebabkan tanaman tumbuh lebih tinggi, ruas antar buku lebih panjang, jumlah daun dan jumlah polong lebih sedikit, dan ukuran biji semakin kecil. Respon kedelai terhadap perubahan suhu tergantung pada fase pertumbuhan. Suhu yang sesuai pada fase perkecambahan adalah 15-22oC, fase pembungaan 20-25oC, dan pada fase pemasakan 15-22oC. Peningkatan CO2 atmosfer dari 349 µL menjadi 700 µL meningkatkan laju pertukaran karbon (C), menurunkan laju transpirasi, dan meningkatkan efisiensi penggunaan air. Kondisi lingkungan di dalam tanah yang berperan terhadap pertumbuhan kedelai terutama adalah tekstur tanah, kadar air tanah dan unsur hara, unsur-unsur toksik, kemasaman tanah, suhu tanah, dan salinitas. Kedelai tumbuh baik pada tanah bertekstur ringan hingga berat, namun tanah yang padat (BI >1,38 kg/m3) tidak sesuai untuk kedelai. Kebutuhan air tanaman kedelai pada fase generatif lebih tinggi dibandingkan pada fase vegetatif, sehingga pada fase generatif lebih peka terhadap kekeringan terutama pada fase pembungaan hingga pengisian polong. Kandungan air optimal adalah 70-85% dari kapasitas lapangan. Kandungan unsur hara tanah harus di atas batas kekahatan agar tanaman tumbuh optimal. Nilai kritis suatu unsur hara dalam tanah beragam tergantung jenis tanah dan metode analisis yang digunakan. Pengaruh suhu tanah terutama pada fase perkecambahan, dan suhu tanah optimal adalah 24,2-32,8°C. Kedelai agak sensitif terhadap kemasaman tanah, unsur-unsur toksik, dan salinitas. Nilai kritis pH, Al, Mn, dan salinitas berturut-turut adalah pH 5,5, Al-dd 1,33 me/100 g, Mn 3,3 ppm, dan 1,3 dS/m. Rhizobium berperan dalam memasok kebutuhan N tanaman kedelai, namun inokulasi tidak efektif pada tanah yang sering ditanami kedelai.
Ubi Kayu Sebagai Bahan Baku Industri Bioetanol Ginting, Erliana; Sundari, Titik; Saleh, Nasir
Buletin Palawija No 17 (2009)
Publisher : Balai Penelitian Tanaman Kacang-kacangan dan Umbi-umbian

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Abstract

Ubi kayu sebagai bahan baku industri bioetanol. Penggunaan sumber energi alternatif terbarukan yang berasal dari hasil pertanian seperti bioetanol perlu dilakukan karena meningkatnya harga Bahan Bakar Minyak (BBM) di pasaran dunia dan menipisnya cadangan fosil. Ubi kayu cukup berpotensi sebagai bahan baku industri etanol karena mampu memproduksi etanol sebanyak 2.000–7.000 l/ha/th. Kandungan pati yang tinggi pada ubi kayu merupakan substrat yang baik untuk menghasilkan glukosa sebagai produk antara pada pembuatan etanol. Proses pengolahan ubi kayu menjadi etanol meliputi gelatinisasi pati, diikuti hidrolisis pati secara enzimatis menjadi glukosa dengan menggunakan enzim amilase dan glukoamilase (likuifikasi dan sakarifikasi), lalu difermentasi menjadi etanol dan dilanjutkan dengan distilasi dan dehidrasi untuk mendapatkan bioetanol dengan kadar 99,5% (fuel grade). Berdasarkan kadar gula total, pati dan ratio fermentasinya, beberapa varietas/klon ubi kayu, di antaranya CMM 99008-3, MLG 0311, OMM 9908-4 dan UJ-5 sesuai untuk bahan baku industri etanol dengan nilai konversi 4–4,5 kg umbi kupas segar/liter etanol 96%. Departemen Pertanian melalui program Peningkatan Mutu Intensisifikasi (PMI) dan perluasan areal tanam, telah memproyeksikan secara bertahap pengembangan ubi kayu untuk mendukung industri bioetanol. Program tersebut perlu mendapat dukungan semua stake holder, termasuk pengusaha/industri serta kebijakan serius dari Pemerintah untuk mendorong realisasi substitusi 10% premium dengan bioetanol (Gasohol E-10).
INTERAKSI GENOTIPE X LINGKUNGAN DAN STABILITAS HASIL BIJI KEDELAI TOLERAN NAUNGAN Sundari, Titik; Nugrahaeni, Novita; Susanto, dan Gatut Wahyu Anggoro
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 44 No. 1 (2016): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (482.645 KB) | DOI: 10.24831/jai.v44i1.12487

Abstract

ABSTRACTTwelve soybean shade tolerant promising lines and two check varieties, Pangrango and Argomulyo, were evaluated in eight locations covered varying degree of shades. The objective of this study was to assess the effect of genotype x environment interaction on seed yield and yield components, as well as on adaptation and yield stability of the lines  under those environments. The trial, in each location, was arranged in randomized block design repeated four times. The traits evaluated were days of flowering, maturity days, plant height, pod number, 100 seed weight, and seed yield. Light intensity was measured during generative phase, started at plants? 30 days old,  two week interval. The results showed that genotype x environment interaction significantly affected those evaluated traits. Stability analysis revealed that four lines, i.e., IBK5-173-5-372, IBM22-861-2-22, IBM22-862-4-1, and IBM22-867-4-7 poorly adapted to the environments as indicated by coefficient regressions approximating 1.0 and low yield average. Eight lines, i.e., IBK5-143-3-7, IBK5-147-2-11, IBK5-172-4-36, IBK5-173-5-371, IIj9-299-1-4, IBM22-873-1-13, IBIj11-431-2-20, and AI26-1114-8-28, and the two check varieties, Pangrango and Argomulyo, were unstable. Of the 13 unstable genotypes, two lines, AI26-1114-8-28  and IBM22-873-1-13, gave higher average yield under shade condition (35%-70% shading level), 1.68 t/ha and 1.36 ton ha-1, respectively, than the two check varieties.Keywords: adaptation, Glycine max
RESPONS GENOTIPE KEDELAI SEBAGAI TANAMAN SELA PADA TUMPANG SARI DENGAN UBI KAYU Sundari, Titik; Purwantoro, Purwantoro; Artari, Rina; Baliadi, Yuliantoro
Jurnal Ilmu Pertanian Indonesia Vol. 25 No. 1 (2020): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (697.431 KB) | DOI: 10.18343/jipi.25.1.129

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Soybean development to intercropping is one of the opportunities to increase soybean planting area. Each soybean variety has different responses to intercropping so it is required to study soybean varieties that are suitable or adaptive to intercropping environments. Therefore, a research was conducted to determine the response of soybean genotypes in intercropping with cassava. The research was conducted at the Jambegede Research Station, Malang in February to December 2018, in two environments, namely intercropping (L1) and monoculture (L2), with two planting times, namely three weeks (T1) and 4 months (T2) after cassava planting. Twelve promising lines and three varieties (Dena 1, Dena 2, and Grobogan) were used as research materials. A completely randomized block design with three replications was used to arrange the treatments in each environment. The results showed that the responses of each soybean genotype tested as intercrops on intercropping system with cassava were varied, depending on the soybean planting time. GH-5 and GH-6 soybean genotypes are suitable for the first intercrop (T1), while GH-3 are suitable as the second intercrops (T2) in intercropping system with cassava + Soybean, with higher stress tolerance index (STI) and lower weighted sensitivity index (WSI) than the other genotypes tested. Based on the land equivalent ratio (LER), intercropping of cassava with GH-5, GH-6, or GH-3 soybean genotypes was advantageous (RKL>1.0). Keywords: land equivalent ratio, stress tolerance index, weighted sensitivity index
Perbaikan Ketahanan Kedelai terhadap Hama Ulat Grayak Sundari, Titik; Sari, Paramita
Buletin Iptek Tanaman Pangan Vol 10, No 1 (2015): Juni 2015
Publisher : Puslitbang Tanaman Pangan

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Abstract

Armyworm (Spodoptera litura) is a major pest on soybean. Severe attack of this pest could cause 100% leaf defoliation and harvest failure. Soybean resistant to armyworm follows antibiosis and antixenosis mechanism. Antibiosis resistance was induced by certain chemical substances in the parts of plant that disturbed the physiological and biological processes of pest. Antixenosis resistance was a mechanism by plant morphological barrier that could affect the behavior of pests, such as leaf morphology, especially related to the pubescense density. The availability of soybean variety resistant to armyworm was expected to reduce the use of insecticides and to minimize the harvest failure. Soybean variety resistant to armyworm would be possible to be developed considering the source of genes for resistance had been identified, such as variety Sodendaizu, Himeshirazu, IAC-100, IAC-80-596-2, Bay, and W / 80-2-4- 20. An effective and efficient breeding method had also been available, through repeated backcrosses assisted by DNA markers as selection indicator. IAC-100/Kaba-G-80, IAC-100/Kaba-G-67, IAC-100/Burangrang-P-95, IAC-100/Kaba-G-47, and IAC-100/Burangrang-G-119 were reported as promising lines, having moderately resistance to resistance to the pest, each line derived from the progenies of crossbreeding using IAC 100 as parent.
IDENTIFIKASI KESESUAIAN GENOTIPE KEDELAI UNTUK TUMPANG SARI DENGAN UBI KAYU Sundari, Titik; Mutmaidah, Siti
Jurnal Ilmu Pertanian Indonesia Vol. 23 No. 1 (2018): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (452.461 KB) | DOI: 10.18343/jipi.23.1.29

Abstract

Intercropping is a modification of crop arrangements that can provide significant improvements in yields, with minimal labor investment. Increased productivity in soybean intercropping with cassava can be achieved through the use of suitable soybean genotypes for intercropping, as each genotype shows different responses to intercropping. The research aimed to identify the suitability of soybean genotypes for intercropping with cassava based on yield and land productivity assessed by the land equivalent ratio (LER). The research in 2016 was conducted at Kendalpayak Station Research, Malang, using a split plot design, repeated three times. The main plot is fifty-five soybean genotypes (50 promising lines and five control varieties, namely: Argopuro, Panderman, Dena 1, Dena 2, and Grobogan), and the sub plot is cropping systems (monoculture and intercropping). The results showed that intercropping of soybean with cassava caused soybean plants to experience shade stress, with shade rate of 62-90, 43-77, and 0-40% respectively for first, second and third-row positions. There are six soybean genotypes suitable for intercropping with cassava, Grob/Argom313-2, Grob/Pander395-3, Grob/Pander405-3, Grob/Pander428-1, Grob/Pander429-2, and Grob/IAC439-2, with an LER value of ?1.8 which is a 10% selection limit to LER. Four combinations of them (Grob/Pander395-3, Grob/Pander405-3, Grob/Pander428-1, and Grob IAC439-2) provide an increase in cassava yields between 7.7-19.7% and reduction of soybean yields between 21.4-38.5%. While the two combinations other (Grob/Argom313-2 and Grob/Pander429-2) provide a reduction of cassava yields by 1.4 and 8.5% and reduction of soybean yield by 23.5 and 7.1%.
Imobilisasi Limbah Radioaktif dari Produksi Radioisotop Molibdenum-99 (99Mo) Menggunakan Bahan Matriks Synroc Titanat Gunandjar, Gunandjar; Sundari, Titik; Purwanto, Yuli
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2016: Prosiding SNTKK 2016
Publisher : Prosiding Seminar Nasional Teknik Kimia "Kejuangan"

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Abstract

The Immobilization Of Radioactive Wastes Generated From Molybdenum-99 (Mo-99) Radioisotope Production Using Titanate Synroc Matrix Materials. The assessment of immobilization technology using synroc matrix material for the long life radioactive liquid wastes generated from Mo-99 radioisotope production containing of uranium, transuranic and fission product elementswas carried out. For that purpose have been developed the titanate synroc matrix material by hot isostatic pressing process. All basic science studies confirm that the leach-rates and a-decay damage in synroc relatively very low and acceptable.  In Indonesia, adaptation of immobilization technology using titanateof synroc matrix materials was carried-out for immobilization of the long life radioactive liquid wastes generated from 99Mo radioisotope production by sintering process at high temperature. Immobilization process was carried-out by mix the radioactive waste with  precursor oxides, then drying the mixture at 100 oC, calsination at 750 oC, then it was preesed in the moulder. Further process are  sintering at the temperature of 1000-1300 oC with the time 1-4 hours to form the solid multiphase ceramic. The composition of  precursor oxides for titanate synroc (in % weight) i.e :  Al2O3  (5.4);  BaO (5.6);  CaO (11.0); TiO2 (71.4) and ZrO2 (6.6). Waste loading in the waste synroc block are 10 – 60 % weight. The quality of the synroc block was determinated by testing of density, pressing strength, and leaching-rate. The testing results showed that the best quality of waste synroc block was obtained at the waste loading 20% weight, sintering process at 1200 oC for 3 hours with values of density 3.35 g/cm3, pressing strength 14.18 kN/cm2, total leaching-rate 2.5.10-3 g.cm-2.day-1 , and leaching-rate of Cs, Sr, and U are  4.1x.10-4 g.cm-2.day-1, 2.3x10-6 g.cm-2.day-1 and 6.3x10-7 g.cm-2.hari-1 respectivelly. The titanate synroc matrix materialscan succeed for immobilization of liquid radioactive waste containing of U, Cs and Sr elements, so that it is very good for immobilization for the radioactive waste generated from 99Mo production.