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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 403 Documents
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KERAGAAN KUALITATIF KLON KENTANG (G0) DARI STEK MINI DALAM RUMAH KETAT SERANGGA Anton Gunarto
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 Priyo Wahyudi
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 Dewi Estu; Rina Ratnasih Irwanto
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 Adhi Susilo
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.
EFEK KONSUMSI MINUMAN BUBUK KAKAO LINDAK BEBAS LEMAK TERHADAP AKTIVITAS ANTIOKSIDAN FLAVONOID PADA PLASMA MANUSIA Welli Yuliatmoko; Fransiska Zakaria R; Feri Kusnandar
Jurnal Matematika Sains dan Teknologi Vol. 9 No. 2 (2008)
Publisher : LPPM Universitas Terbuka

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Abstract

Fat free cocoa powder is a rich source of flavonoid antioxidants including epicatechin, catechin, and procyanidins, which have attracted interest regarding cardiovascular health. The aim of this research was to evaluate the effect of Indonesian fat free cocoa powder drink consumption on antioxidants activity. Healthy woman subjects were divided into cocoa group (n=9) and control group (n=9). Cocoa powder drink containing skim milk and sugar was given to the cocoa group. The control group received only water containing skim milk and sugar. The criteria of the respondents were according to health medical diagnosis and informed consent signature. Their peripheral blood was withdrawn for the analysis of antioxidants capacity. Antioxidants capacity consisted of antiradical by DPPH method, malonaldehyde (MDA) content, vitamin C, and diene conjugation. The data of cocoa group showed that there were significant increased in antiradical, vitamin C and decreased in MDA content (p<0.05). Cocoa consumption increased diene conjugation however was not significantly (p<0.05). In conclusion, the Indonesian fat free cocoa powder has increased plasma antioxidant system, which manifest good health function.
ANALISIS ANTROPOMETRI PADA ANAK BALITA DAN FAKTOR-FAKTOR YANG BERKAITAN Ila Fadila; Tutisiana Silawati; Eko Yuliastuti
Jurnal Matematika Sains dan Teknologi Vol. 9 No. 2 (2008)
Publisher : LPPM Universitas Terbuka

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Abstract

This study was conducted to explore the nutritional status of children under five factors (i.e. mother education background, family income, children under five healthy, health environment, access to health service, and access to media informations). A cross-sectional studybased on health service was conducted in Ciruas, Mancak, and Kramatwatu Serang, Banten. Analysis was done by observing on 121 peoples. The nutritional status of children under five was measured by using anthropometry. The conclusions there were 8% very poor nutritional status, 23% poor nutritional status, 64% good nutritional status, and 5% very good nutritional status. In general, for a very poor and poor nutritional status was dominated by mother with low educational background, frequency of feeding under three times a day, poor healt condition, limited access to media information, and poor environmental health. However, there are found that child with poor nutritional status in higher family income and mother with highest education background. It can be concluded that child nutritional status not only based on family income and mother educational background but also depend on the way of mother look after children under five.
KONTRIBUSI INDUSTRI PENGOLAHAN HASIL PERIKANAN TRADISIONAL TERHADAP PENDAPATAN NELAYAN PENGOLAH Ernik Yuliana; Endang Indrawati; Idha Farida
Jurnal Matematika Sains dan Teknologi Vol. 8 No. 1 (2007)
Publisher : LPPM Universitas Terbuka

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Abstract

Traditional fish processing industries in Muara Angke Jakarta have been involving many labor from the local fishermen or others. This study describes the contributions of many small industry to the labor incomes based on every small industry profit distribution. Survey method had been applied to collect the data. The population are all small traditional fish processing industries in Muara Angke. The samples are chosen based on their product, either salty fish or smoked fish. “Hayami method” was applied to calculate the added value of each small industry. The results of this study shows that salty squid has the highest value added (Rp2167,61/kg) and highest profits (Rp2072,61/kg), Indian mackerel smoked fish gives the highest contributions to labor incomes (Rp663,36/kg). Sardinella salty fish gives the highest profit level, followed by salty squid and salty mackerel scad. Salty stingray and salty Indian mackerel gives high value for labor return. In addition, salty sardinella, salty squid, and salty “lesi” fish have high added value ratio. Salty stingray gives the highest other input contribution, followed by smoked Indian mackerel.
KETEGARAN UJI-t TERHADAP KETIDAKNORMALAN DATA Agus Santoso
Jurnal Matematika Sains dan Teknologi Vol. 7 No. 1 (2006)
Publisher : LPPM Universitas Terbuka

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (334.682 KB) | DOI: 10.33830/jmst.v7i1.620.2006

Abstract

t-test used to test means of two populations assumes that each population is normally distributed. Theoretically, violation of the assumption makes the result of the test invalid. This research evaluates the robustness of the t-test on various value of sample size using three types of distribution: normal, symmetric non-normal, and not symmetric non-normal. Different computation techniques of t-value which depend on the variance of the two populations were also employed. The simulation showed that t-test used to test mean of two populations is not influenced by non-normality of the population distribution. The exploration of distribution of the difference between two samples means showed that its distribution was normal. Therefore, the robustness against non-normality of the t-test was the consequences of the difference between two sample means that normally is distributed.
STUDI STRUKTUR EPIDERMIS DAUN Dasymaschalon Blumei Finet &Amp; Ganep. (Annonaceae) DI JAWA DAN SUMATERA Subekti Nurmawati; Susi Sulistiana
Jurnal Matematika Sains dan Teknologi Vol. 8 No. 1 (2007)
Publisher : LPPM Universitas Terbuka

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Abstract

Dasymaschalon blumei Finet & Gagnep. Is one of the species from the genus Dasymaschalon (Hook. F & Thomson) Dalla Torre & Harms which can be recognized from its peculiar moniliform fruits. It widespread in Java and Sumatera. An anatomical of leaves from herbarium specimens of D. blumei collected from Java and Sumatera has been carried out by using light microscope in Herbarium Bogoriense. The objectives of this study is to observe the leaves anatomy of D. blumei and to support the classification of the species concept of D. blumei. The specimens are divided into three categories based on the elevation, those were: specimens collected from < 50 m; 250 – 500 m,; and > 500 m of sea level. The result showed that from the epidermal section, the type of the stomata from the three categories were similar, and also the number and the index of the stomata. Variations however exists because of the environment factors.
PENAPISAN AKTINOMISETES YANG BERSIFAT ANTAGONIS TERHADAP PENYAKIT LAYU BAKTERI TANAMAN CABE Inggit Winarni; Elizabeth Novi K
Jurnal Matematika Sains dan Teknologi Vol. 8 No. 1 (2007)
Publisher : LPPM Universitas Terbuka

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Abstract

Ralstonia solanacearum can cause droop bacteria desease in chilli plants which resulted in productivity’s decreasing. Chemical subtances commonly used to eliminate the bacteria is costly and have negative effect on environment. This research aims to eliminate the varied actinomisetes and to get antagonistics actinomisetes towards the droop bacteria desease of chilli plants. The Botanical forest in Baturaden was chosen because has unique and high diversity microorganism that has characteristic antagonism that pressure growth of other antagonistic’s because of antimicrobe. A number of 18 actinomisetes isolat were successfully isolated and then rejuvenated based on morphology, colours, and shape of the colonies. A characterization of morphology trait towards target bacteria had also been conducted. Six of the 18 actinomisetes isolat have antagonist characteristics towards target bacteria’s growth. Isolat Btrd II.g and Btrd IV.l have the highest resistor activity as indicated by a 6 and 5 mm crystal clear zone. It indicated that actinomisetes isolat Btrd II.g and Btrd IV.l have relatively high antagonist characteristics. Btrd II.g and Btrd IV.l are potential to be used as an environmental friendly way to eliminate droop bacteria desease in chilli plants.

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