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INDONESIA
Jurnal Matematika Sains dan Teknologi
Published by Universitas Terbuka
ISSN : 14111934     EISSN : 24429147     DOI : -
Core Subject : Education, Agriculture,
Agriculture, Biological Sciences & Forestry Mathematics Other
Merupakan media informasi dan komunikasi para praktisi, peneliti, dan akademisi yang berkecimpung dan menaruh minat serta perhatian pada pengembangan Matematika, ilmu pengetahuan dan teknologi. Diterbitkan oleh Lembaga Penelitian dan Pengabdian kepada Masyarakat, Universitas Terbuka.
Arjuna Subject : -
Articles 4 Documents
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Search results for , issue " Vol 9 No 2 (2008)" : 4 Documents clear
KERAGAAN KUALITATIF KLON KENTANG (G0) DARI STEK MINI DALAM RUMAH KETAT SERANGGA Gunarto, Anton
Jurnal Matematika Sains dan Teknologi Vol 9 No 2 (2008)
Publisher : LPPM Universitas Terbuka

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Abstract

The purpose of the research is to investigate the phenotypic performances as qualitative assessment characters of three potato clones resulted from protoplasm fusion (A5) and two clones from botany seeds (PAS3063 and PAS3064) which had been identified to be resistant from bacterial wilt disease (Ralstonia solanacearum). The commercial potato varieties (Granola and Atlantic) were used as a comparison varieties. All five varieties were produced from mini graft. The result of qualitative performance that more prominent were on A5 clone with the characters that the branch was red, tuber skin was purple/violet and its ability produce flowers. Meanwhile, the branch of another clone was green, tuber skin was yellow/brown, and it does not produce much flowers. The color of tuber flesh were white except on Granola which was yellow. The result of cluster analysis that based on the morphologic character from each plant showed that PAS3063 was closed to Atlantic variety characteristic, PAS3064 was closed to Granola variety, and A5 different from both commercial varieties.There fore, it is proposed that PAS3063 and PAS3064 can be used as substitutes for commercial cultivars, while further consideration should be made for A5 since it is signifoutly different with the familiar cultivars.
PRODUKSI MIKOINSEKTISIDA DARI PROPAGUL KAPANG Beauveria Bassiana Wahyudi, Priyo
Jurnal Matematika Sains dan Teknologi Vol 9 No 2 (2008)
Publisher : LPPM Universitas Terbuka

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Abstract

Fungal insecticide or well known as mycoinsecticide is produced from propagules of entomopaghogenous fungi. It is a common knowledge that fungi can kill insects, individually or in epizootics, and methods for isolation and exploration of fungi are well known. Despite these facts, production of commercial preparations with fungi came very late. There is only one commercial product, which is produced on a large scale for several years. Beauveria bassiana is one of entomopathogenic fungus that has been used for biocontrol of many insects of crops. In this article we assess production of mycoinsecticide Beauveria bassiana through all stages of their handling, such as isolation, strain selection and optimation of production procedures both liquid and solid state fermentation. The result showed that the best way to produce mycoinsecticide in a large scale production was solid state fermentation using rice-base medium including cooked-rice and rice flour. The best incubation can be taken place in room temperature for 7 days.
EKSPLORASI HABITAT BAKUNG PUTIH (Crinum asiaticum L.) UNTUK MENDAPATKAN KADAR GALANTAMIN PADA KETINGGIAN TEMPAT BERBEDA Estu, Dewi; Irwanto, Rina Ratnasih
Jurnal Matematika Sains dan Teknologi Vol 9 No 2 (2008)
Publisher : LPPM Universitas Terbuka

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Abstract

White lily, Crinum asiaticum L (Amaryllidaceae) produce secondary metabolite called galantamine which has been developed to cure alzheimer desease. The purpose of this research was to explore the habitat of C. asiaticum which produces a high yield of galantamine. The bulb of C. asiaticum from four different locations which has altitudes ranging from 0-1250 meters above sea level was taken. Those locations were Santolo Beach-Garut, Cijambe-Subang, Dago-Bandung and Cikole-Lembang. The bulb was extracted and galantamine concentration was determined using HPLC (High Performance Liquid Chromatography). Parameters such as pH, humidity, soil organic content were also measured. The results showed that the bulb taken from Cikole had the highest galantaminecontent (63.592 mg/g). The results also showed positive correlation between altitude and galantamine content (r=0.843). However, galantamine content had no correlation with the size and weight of C. asiaticum bulb (r=0.0583). In relation to environmental condition, there was positive correlation between soil organic with galantamine content (r=0.862). Further, nitrogen concentration tends to affect the production of galantamine (r=0.848).
BIOREMEDIATION OF SODA ASH CONTAMINATED WITH GREASE: THE APPLICATION OF COMPOSTING TECHNOLOGY Susilo, Adhi
Jurnal Matematika Sains dan Teknologi Vol 9 No 2 (2008)
Publisher : LPPM Universitas Terbuka

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Abstract

Perubahan fisika dan kimia dalam timbunan kompos diteliti selama proses pengomposan limbah pembuatan botol yang terkontaminasi oleh gemuk (grease). Temperature awal menunjukkan peningkatan diikuti oleh penurunan secara bertahap pada akhir proses pengomposan. C:N rasio dan bahan tambahan nampaknya mempunyai pengaruh yang paling nyata dalam memproduksi temperatur tinggi. Proses pengomposan selama lima (5) bulan tidak menghilangkan kontaminan sampai batas yang dipersyaratkan. Oleh karena itu diperlukan waktu tambahan guna mengurangi kontaminan sampai level yang ditetapkan. Proses pengomposan ini berhasil dalam menghasilkan temperatur yang meningkat, namun parameter yang menyebabkan kenaikan temperatur tersebut masih belum jelas.

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