Rukman Rukman
Institut Teknologi Bandung

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An analysis of Obama’s Speech at climate Change Conference COP 21 in Paris in 2015 Using Fairclough’s Three-Dimensional Model rukman, rukman
Jurnal Sosioteknologi Vol 15, No 2 (2016)
Publisher : Kelompok Keahlian Ilmu Kemanusiaan

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Abstract

The aim of this paper is to analyze  Obama’s speech at climate change conference (COP 21) held in Paris November 18, 2015. The analysis uses Fairclough’s three-dimensional model The three-dimensional model includes such aspects as text (language), discursive practice, and social practice. The results of analyzing these aspects show that under the textual (language) aspect, this speech is dominated by the use of both the imperative mood and material process of transitivity. Under the discursive practice, the speech blends the discourse of long-term commitment in achieving the two degree Celsius global warming target with the discourse of  innovation and investment in clean energy technologies. As for its social practice, the speech reflects the shifting from the discourse of climate change into the discourse of innovation and investment in clean energy. Keywords: Fairclough’s three-dimensional model, imperative mood, transitivity, climate change (global warming) discourse, clean energy technology innovation and investment discourse
PEMISAHAN FRAKSI RADIOIOD DALAM PROSES Mo-99 HASIL FISI U-235 DAN PENGGUNAANNYA UNTUK PEMBUATAN HIPPURAN-I-131 Soenarjo, Sunarhadijoso; Gunawan, Adang Hardi; Wisnukaton, Kadarisman; Purwadi, Bambang; Sukmana, Ateng; Sriyono, Sriyono; Rukman, Rukman
Jurnal Radioisotop dan Radiofarmaka Vol 1, No 1 (1998): Jurnal PRR 1998
Publisher : Jurnal Radioisotop dan Radiofarmaka

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PEMISAHAN FRAKSI RADIOIOD DALAM PROSES 99Mo HASIL FISI 235U DAN PENGGUNAANNYA UNTUK PEMBUATAN HIPPURAN-131I. Proses produksi radioisotop 99Mo dari reaksi fisi 235U menghasilkan fraksi radioaktif non-molibdenum yang dikelompokkan dalam 3 macam fraksi, yang selama ini di PPR - BATAN masih diperlakukan sebagai limbah radioaktif, yaitu fraksi radioiod, fraksi radioxenon (gas mulia) dan fraksi uranium pasca iradiasi. Fraksi radioiod diharapkan mempunyai potensi sebagai sumber pengadaan radioisotop 131I, dan oleh karena itu dalam penelitian ini dilakukan upaya pemisahan lebih lanjut fraksi radioiod tersebut sebagai larutan "bulk" Na131I. Pemisahan dilakukan melalui pemerangkapan fraksi radioiod menggunakan kolom serat tembaga, diikuti dengan pemurnian menggunakan kolom karbon. Larutan "bulk" Na131I dihasilkan dengan elusi kolom karbon menggunakan larutan NaOH 0,2 N. Keradioaktifan total larutan "bulk" Na131I yang dihasilkan relatif rendah, diduga antara lain karena sebagian besar fraksi radioiod lolos terlepas dati kolom serat tembaga dan terperangkap dalam "cold finger" yang sebenarya dimaksudkan untuk menangkap fraksi radioxenon. Tetapi karakteristika pH, radiokimia dan radionuklidanya memenuhi persyaratan untuk larutan "bulk" Na131I. Penggunaannya untuk menandai senyawa Hippuran menghasilkan produk Hippuran-131I dengan rendemen penandaan yang baik. Akan tetapi, penggunaan kolom resin Dowex 1X8 (Cl-) 100 - 200 mesh untuk pemurnian Hippuran-131I perlu dipertimbangkan lagi karena resin tersebut mempunyai potensi cukup besar untuk mengikat spesi Hippuran-131I. SEPARATION OF RADIOIODINE FRACTION IN THE PROCESSING LINE OF 235U FISSION PRODUCED 99Mo AND ITS UTILIZATION FOR PREPARATION OF HIPPURAN-131I. Production process of 99Mo from fission of 235U in RPC - BATAN produces non-moly radioactive fractions. which are classifiable into 3 fractions, i.e. : radioiodine fraction, radioxenon (noble gas) fraction and post irradiated uranium fraction. The radioiodine fraction is expectable to be used as a source for providing radioisotope of 131I, and, therefore, an effort for separation of the radioiodine fraction was carried out. The separation was performed by trapping the radioiodine in a copper-wool column followed by purification using charcoal column. The bulk solution of Na131I was then obtained by eluting the charcoal column with 0.2 N NaOH solution. The total activity of the resulting Na131I bulk solution was relatively low, presumable due to the escape of the radioiodine from the copper-wool column into the cold finger originally used for trapping the noble gas fraction. However, the pH, radiochemical and radionuclidic purities satisfactorily met the specification required for Na131I bulk solution. Radioactive labeling yields on Hippuran with the resulting Na131I bulk solution were also satisfactory, but the purification of the resulting Hippuran-131I using Dowex lX8 (Cl-) 100 - 200 mesh resin should be reconsidered because of the adsorption of Hippuran-131I by the resin.