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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. 16 No. 1 (1983)" : 2 Documents clear
Influence of Microstructure on the Properties of a Cold Drawn Alpha-Beth Cu-Zn-Al Alloy Dewa Nyoman Adnyana
Journal of Mathematical and Fundamental Sciences Vol. 16 No. 1 (1983)
Publisher : Institute for Research and Community Services (LPPM) ITB

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Abstract. In order to improve its drawability at room temperature, the large strain deformation behavior of a Cu-Zn-Al alloy with a two-phase α + β structure has been studied. Mechanical tests and quantitative metallography on wire specimens in different stages of the drawing process allowed to come to a better understanding of structure-property relationship. The relative deformation of the two phases has been found to depend on various factors such as the hardness difference between the two phases the drawing strain and the shape indices of the constituents. Sari. Sebuah panduan Cu-Zn-Al dengan struktur a+B, diuji tarik melalui proses "wire drawing" pada temperature kamar. Pengujian ini dimaksudkan untuk mempelajari dan sekaligus memperbaiki sifat "kemampuan tarik" dari panduan. Kawat hasil penatikan dingin ini kemudian diuji mekanik dan kuantitatis metallografi, untuk memperoleh suatu hubungan antara struktur-mikro dan sifat-sifat logam. Hasil penelitian menunjukkan bahwa perbedaan dari sifat deformasi antara fasa a dan fasa B tergantung pada faktor-faktor seperti, perbedaan kekerasan antara kedua fasa, besarnya regangan yang diberikan ketika proses penatikan dingin dan perubahan bentuk butir / struktur dari kedua fasa sebelum dan sesudah penarikan.
Etude Par Fragmentographie de Masse de la Cinetique Sanguine D'un Anti-Inflammatoire DU F-1594 A. Hanafiah W.S.; Badruzzaman S.
Journal of Mathematical and Fundamental Sciences Vol. 16 No. 1 (1983)
Publisher : Institute for Research and Community Services (LPPM) ITB

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Abstract

Sari. Telah dilakukan penetapan kadar plasmatik dari senyawa p bifenil-4, okso-4, metil-2-butirat (F-1594) sebagai salah satu obat anti inflamasi dengan teknik kombinasi kromatografi gas-spektrometri massa. F-1594 dengan 'internal standar' p-bifenil 4-chloro 2' asetat diekstraksi dari plasma, dipisahkan melalui kromatografi gas yang dilengkapi dengan kolom kapiler kemudian dianalisa secara fragmentografi massa. Dengan menggunakan sedikit cuplikan, cara ini mampu mendeteksi suatu sediaan dengan konsentrasi yang sangat kecil. Abstract. The determination of p-biphenyl-4, oxo-4, methyl-2-butyric acid (F-1594) as an antiinflammatory agent in the human plasma by using gas chromatography-mass spectrometry is described. Quantitation was achieved after extraction from the plasma, F 1594 and p-biphenyl 4-chloro 2'-acetic acid as an internal standard, separated by gas chromatography with the capillary column and analysed by mass fragmentography. This process requires only a very little sample and it enables the detection of very low concentration.

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