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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 3 Documents
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Search results for , issue "Vol. 10 No. 1 (1975)" : 3 Documents clear
Utilisasi Energi pada Pabrik Baja Tulangan (Besi Beton) dengan Rol Mini di Indonesia Harsono Wirjosumarto; Tata Surdia
Journal of Mathematical and Fundamental Sciences Vol. 10 No. 1 (1975)
Publisher : Institute for Research and Community Services (LPPM) ITB

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Abstract

Ringkasan. Pabrik baja tulangan tumbuh dengan pesat di Indonesia. Di dalam studi ini dipelajari tentang efisiensi penggunaan energi dari pabrik-pabrik tersebut. Hasil studi menunjukkan bahwa makin tinggi kapasitas pabrik makin hemat pemakaian energinya. Di samping itu ditemukan pula bahwa penyediaan energy untuk pabrik-pabrik tersebut terlalu tinggi.Abstract. Mini roll steel mills are growing very fast in Indonesia. In this work the efficiency of energy utilization in those factories are studied and it was found that the energy utilization is more efficient for the factory which has higher capacity. 0n the other hand it was discovered that the energy reserved for those factories was too high for their capacities. 
Pengaruh Endoxan-Asta (Cyclophosphamide) pada Pertumbuhan Embryo Ayam Sri Sudarwati; Tien Wiati Suryono
Journal of Mathematical and Fundamental Sciences Vol. 10 No. 1 (1975)
Publisher : Institute for Research and Community Services (LPPM) ITB

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Abstract

Ringkasan. Telah diteliti pengaruh Endoxan-Asta (cyclophosphamide) terhadap pertumbuhan embryo ayam dengan jalan menyuntikkannya ke dalam kantung yolk pada umur 4 dan 5 hari inkubasi. Didapatkan, bahwa dosis teratogenic adalah 0.04 mg per telur. Malformasi yang ditimbulkannya adalah: gelembung meliputi mata, kelopak mata yang tidak tumbuh dengan sempurna, mata yang tidak tumbuh samasekali, paruh dengan sisi lateral yang bercelah, paruh bawah atau paruh atas yang pendek, paruh menyilang, micromelia, syndactyli, ectrodactyli, ectopia viscerum, exencephali dan "cleft palate". Selain itu Endoxan-Asta berpengaruh menghambat pertumbuhan pada umumnya. Abstract. The influence of Endoxan-Asta (Cyclophosphamide) on the development of chick embryos has been investigated by injecting the substance into the yolk sac of 4 and 5 days incubated eggs. It was found that 0.04 mg Endoxan-Asta per egg is a teratogenic dose. Malformations obtained during the investigation were: bulb over the eye, eyelids not well developed, undeveloped eyes, cleft on the lateral sides of upper beak, short upper or lower beak, crossed beak, micromelia, syndactyly, ectrodactyly, ectopia viscerum, exencephaly and cleft palate. Besides that, Endoxan-Asta caused stunted growth. 
Nodula Akar Pohon Casuarina glauca dan C. littoralis dan Nilai Akumulasi Nitrogen pada Tanah dibawahnya U. Suriawiria
Journal of Mathematical and Fundamental Sciences Vol. 10 No. 1 (1975)
Publisher : Institute for Research and Community Services (LPPM) ITB

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Abstract

Ringkasan. Tulisan ini melaporkan hasil akumulasi Nitrogen tanah di bawah pohon Casuarina glauca dan C. littoralis dan sebagai bandingan di bawah pohon Banksia serrata di dalam ekosistim yang sama. Walaupun nilai jumlah akumulasi Nitrogen tanah di bawah pohon C. glauca dan C. littoralis rendah (di bawah 0.1 persen) ternyata ada perbedaan yang nyata antara kerapatan dan kepadatan vegetasi dibawahnya kalau dibandingkan dengan di bawah pohon B. serrata yang mempunyai nilai akumulasi Nitrogen tanah antara 0.0311-030523 persen.Abstract. This paper, reports the measurement results of soil Nitrogen accumulation value under the Casuarina glauca and, C. littoralis trees and as a comparation under the Banksia serrata trees of the some ecosystem. Though total soil Nitrogen accumulation value under the Casuarinaglauca and C. littoralis trees are low (under 0.1 percent) there is a wide difference in density and coverage of vegetation under the Banksiaserrata trees which have a soil Nitrogen value between 0.0311-0.0523 percents. 

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