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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
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Search results for , issue "Vol. 17 No. 3 (1984)" : 2 Documents clear
On the Possibility of Using Mn4N as a Neutron Polarizer Marsongkohadi Marsongkohadi,; Kurniadi Sumaamidjaia; S. K. Paranjpe; M.R.L.N. Murthy; N.S. Satya Murthy
Journal of Mathematical and Fundamental Sciences Vol. 17 No. 3 (1984)
Publisher : Institute for Research and Community Services (LPPM) ITB

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Abstract. Manganese nitride, Mn4N has been investigated by means of unpolarized as well as polarized neutron diffraction technique. It was found that both (100) and (110) reflections of this compound could produce almost 100% polarized, monochromatic neutrons. Furthermore, the two reflections provide opposite senses of polarization. While (100) reflects neutrons with spins aligned opposite to the magnetization, (110) reflection provides neutrons with spins parallel to the magnetization. This would offer possibility of producing polarized, monochromatic neutrons of either state of polarization by switching from one reflection to the other, without the use of electronic flipping devices. Sari. Nitrida mangan, Mn4N telah diteliti dengan teknik difraksi neutron tak-terpolarisasi maupun terpolarisasi. Ternyata kedua refleksi, (100) dan (110), dapat menghasilkan hampir 100% neutron terpolarisasi serta monokromatik. Lebih lanjut diketahui bahwa kedua refleksi tersebut menghasilkan polarisasi yang berlawanan arah. Refleksi (100) hanya memantulkan neutron dengan polarisasi yang berlawanan arah dengan magnetisasi, sedangkan refleksi (110) menghasilkan neutron dengan polarisasi searah dengan magnetisasi. Hal ini membuka kemungkinan untuk memproduksi neutron monokromatik dengan salah satu keadaan polarisasi, dengan cara berpindah dari suatu refleksi ke refleksi lainnya tanpa menggunakan alat elektronik.
Effect of Basazinon 45/30 EC on the Postnatal Development of the Albino Mouse (Mus Musculus) Swiss Strain Tien W. Suryono; Sri Sudarwati; Lien A. Sutasurya
Journal of Mathematical and Fundamental Sciences Vol. 17 No. 3 (1984)
Publisher : Institute for Research and Community Services (LPPM) ITB

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Abstract

Sari. Basazinon 45/30 EC dengan dosis 22 mg/kg b.b. telah diberikan secara oral (gavage) setiap hari kepada mencit hamil pada umur kehamilan 5 hari sampai dengan hari ke 21 pascalahir (saat disapih). Pengamatan di lakukan terhadap berbagai ciri perkembangan fisik dan seksual, serta kemampuan reproduksi mencit generasi F1. Berat badan rata-rata anak mencit selama menyusu dan minggu pertama sesudah disapih ternyata kurang (p< 0,05 dan p<0,01) dari pada anak mencit kelompok kontrol, sedangkan berat badan rata-rata pada saat dilahirkan tidak ada perbedaan. Kemampuan refleks untuk membalikkan tubuh dan telentang menjadi tertelungkup, desendensi testis untuk pertama kali dan terjadinya estrus yang pertama pada kelompok perlakuan didapat pada umur yang lebih lanjut (p < 0,5 dan p < 0,01). Tidak terjadi kelainan yang nyata dalam hal kemampuan reproduksi dan ciri-ciri perkembangan lainnya pada kelompok perlakuan. Abstract. Basazinon 45/30 EC of 22 mg/kg b.w. were administered daily by gavage to pregnant mice on day 15 of gestation to the day of weaning (21 days old). Several physical and sexual developmental criteria and the reproductive ability of the F1 generation were observed. The mean body weight of the young during the period of lactation and the first week after weaning were significantly lighter (p < 0.05 and p < 0.01) than that of the controls, while the mean birth weight were not different. The reflex ability in turning the body from supine to prone position, the first testicle descent and the first estrous, occured significantly later in experimental young (p < 0.05 and p < 0.01). No significant deviation in the reproductive ability and other developmental criteria were found.

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