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Journal of Mathematical and Fundamental Sciences
Published by Institut Teknologi Bandung
ISSN : 23375760     EISSN : 23385510     DOI : https://doi.org/10.5614/j.math.fund.sci.
Core Subject : Science, Education,
Astronomy Chemistry Earth & Planetary Sciences Mathematics Physics
Journal of Mathematical and Fundamental Sciences welcomes full research articles in the area of Mathematics and Natural Sciences from the following subject areas: Astronomy, Chemistry, Earth Sciences (Geodesy, Geology, Geophysics, Oceanography, Meteorology), Life Sciences (Agriculture, Biochemistry, Biology, Health, Medical, Pharmacy), Mathematics, Physics, and Statistics.
Arjuna Subject : Matematika - Matematika (Lain-Lain)
Articles 2 Documents
 1 
Search results for , issue "Vol. 20 No. 3 (1987)" : 2 Documents clear
Food Filtering Process of Daphnia Carinata King to Assess the Water Soluble Detergent Soelaksono Sastodihardjo; Hilda Zulkifli
Journal of Mathematical and Fundamental Sciences Vol. 20 No. 3 (1987)
Publisher : Institute for Research and Community Services (LPPM) ITB

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Abstract. Water organisms such as zooplankton and fish were used quite often as indicators for water quality in connection with chemically toxic substance in water. Several criteria could be use such as LC50, population index, and physiological phenomena. Bioassay that rely on this physiological phenomena was meant to measure the sublethal effect of the suspected toxic substance on the organisms. Further development of sublethal bioassay using filtering rate of Daphnia carinata (Cooley, 1977; McMahon, 1966) has taken place for a certain detergent. Yeasts cells tagged with 32P were used as food for Daphnia carinata and the filtering rate was measured from the radioactivity of these crustaceans after a certain period of feeding time. Comparison was made between the feeding rate in the medium with and without the detergent and they appeared to be different. Sari. Organisme air seperti zooplankton dan ikan telah sering digunakan untuk menafsirkan kehadiran senyawa kimia yang terlarut dalam air sehubungan dengan masalah kualitas air. Kriteria untuk menyatakan kehadiran tersebut dapat dinyatakan dalam bentuk LC50, indeks populasi, dan gejala fisiologis. Uji hayati yang menggantungkan pada gejala fisiologis ini mempunyai sasaran untuk mengukur dampak subletal suatu senyawa terhadap organisme. Perkembangan lebih lanjut adalah penggunaan laju penyaringan dari Daphnia carinata (Cooley, 1977; McMahon 1966) untuk menafsirkan kehadiran sejenis detergen. Dalam hal ini laju penyaringan diukur dengan menghitung jumlah rugi yang bertanda 32p yang termakan oleh udang tersebut. Dilakukan pembandingan antara laju penyaringan Daphnia yang berada pada medium tanpa dan dengan detergen.
Pembuatan Sediaan 99mTc-Sel Darah Merah sebagai Penyidik Limpa A. Hanafiah Ws.
Journal of Mathematical and Fundamental Sciences Vol. 20 No. 3 (1987)
Publisher : Institute for Research and Community Services (LPPM) ITB

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Abstract

Sari. Telah dilakukan penandaan sel darah merah (SDM) dengan radionuklida 99mTc menggunakan SnCl2 sebagai reduktor. Kondisi penandaan optimum dengan menggunakan darah tikus diperoleh pada pemakaian SnCl2. 2H2O Iug dan suhu pemanasan 49-50 derajat C selama 15 menit. Efisiensi penandaan dan kemurnian radiokimia ditentukan dengan kromatografi kertas menaik menggunakan kertas Whatman No.1 sebagai fase diam dan methanol 85% sebagai fase gerak. Studi biologis dan penyidikan pada tikus Wistar menunjukkan tertimbunnya sediaan ini pada limpa. Abstract. Labeling of red blood cells with 99mTc radionuclide was carried out using SnCl2 solution as a reductor. The optimum required condition for rat blood was obtained in a solution containing 1 μg SnCl2.2H2O which was heated for 15 minutes at 49-500C. Labeling efficiency and radiochemical purity of radiolabeled compound was determined by ascending paper chromatography using Whatman No. I paper as stationary phase and methanol 85% as mobile phase. The result of biodistribution and imaging in the Wistar white rat revealed that the preparation was accumulated in the spleen.

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