cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
Contact Name
-
Contact Email
-
Phone
-
Journal Mail Official
-
Editorial Address
-
Location
Kota adm. jakarta pusat,
Dki jakarta
INDONESIA
JURNAL SAINS DAN TEKNOLOGI INDONESIA
Published by Badan Pengkajian dan Penerapan Teknologi
ISSN : -     EISSN : -     DOI : -
Core Subject : Science, Education,
Computer Science & IT Education
Arjuna Subject : -
Articles 236 Documents
 4   5   6   7   8 
DEMINERALISASI DAN DEPROTEINASI KULIT UDANG SECARA KONTINYU PADA TAHAPAN EKSTRAKSI KITIN SECARA BIOLOGIS waltam, deden rosid; Hermansyah, Heri; Setyahadi, siswa
Jurnal Sains dan Teknologi Indonesia Vol. 12 No. 1 (2010)
Publisher : Badan Pengkajian dan Penerapan Teknologi

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (232.55 KB) | DOI: 10.29122/jsti.v12i1.843

Abstract

Chitin extraction in industry has been conducted by chemical process. The process has been known as a harsh treatment that badly affected to chitin quality, equipment and the environment. Since the last decade biologically chitin extractionhas more attracted attention. The biologically chitin extraction was conducted by batch fermentation or subsequent-batch fermentation. Continous demineralization and deproteinization is a new inovation on biologically chitin production technology.This system promises as an alternative technology for overcoming problems of batch fermentation process and chemical process. The objectives of the experiment was to obtain the optimal condition for continous deminineralizationand deproteinization for producing chitin from Panaeus vannamei shrimp shells. Lactobacillus acidophilus FNCC 116 and Bacillus licheniformis F11.1 was used for demineralization and deproteination process respectively. The results showed that the best condition for continuous demineralization was 6,5% glucose feed, with 16 hours retention time. For continuous deproteinization, the best condition was with 12 hours retention time. The process could remove 92.95% ash and 91.40% protein. The chitin, ash, and protein content of chitin product was 96.69%, 1.44% and 1,76% respectively.
ALTERNATIF PONDASI TEROWONGAN LAYANG DALAM LAUT UNTUK PRASARANA TRANSPORTASI Aspar, Wimpie Agoeng N.; Prijo Utomo, Djoko; Hendriyawan, Hendriyawan
Jurnal Sains dan Teknologi Indonesia Vol. 12 No. 3 (2010)
Publisher : Badan Pengkajian dan Penerapan Teknologi

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (611.338 KB) | DOI: 10.29122/jsti.v12i3.866

Abstract

A Submerged Floating Tunnel (SFT) is a tunnel that floats in water, supported by its buoyancy specifically by employing the hydrostatic thrust. In order to construct the foundation of the SFT, soil investigation has to be performed in advance. The soil investigation includes identification of subsurface soil profile, geotechnical index properties and parameters. Results of the soil investigation were used to he analyze and develop alternatives of the foundations for anchoring the prototype of the SFT. This paper discusses the alternatives of the foundations based on soil condition and applied tension leg. The research will be of interest to many practicing engineers and researchers regarding the subject matter.
SINTESIS DAN OPTIMALISASI GEL KITOSAN-ALGINAT Sugita, Purwantiningsih; Sjachriza, Achmad; wahyono, dwi
Jurnal Sains dan Teknologi Indonesia Vol. 9 No. 1 (2007)
Publisher : Badan Pengkajian dan Penerapan Teknologi

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (62.129 KB) | DOI: 10.29122/jsti.v9i1.770

Abstract

Shrimp shell can be used to make chitosan. The objective of this work is to sythesis and optimize chitosan-alginate gel by comparing its rheological properties. Rheological properties of chitosan were improved by gelation using glutaraldehyde as cross linker and natural hydrocolloids such as alginate. Rheological properties measured were strength, break point, rigidity, swelling and shrinking gel. The gel was made by mixing chitosan solution 2.5% (w/v), glutaraldehyde 4%, 5%, and 6% (v/v), and alginate 0%, 0.75%, and 1.0%. According Modde 5, the optimum gel happened at glutaraldehyde and alginateconcentration are 4.0% and 0.82%, respectively. This optimalization to adsorp metal ions gave gel strength, break point, pembengkakan, rigidity and shrinking properties are 881,4385 g cm-2, 1,0267 cm, 4,5313 g, 8,5179 g cm-1 and 1,6280 g, respectively.
PREFERENSI PANELIS PADA TIGA KLON KENTANG TERHADAP KULTIVAR GRANOLA DAN ATLANTIK gunarto, anton
Jurnal Sains dan Teknologi Indonesia Vol. 14 No. 1 (2012)
Publisher : Badan Pengkajian dan Penerapan Teknologi

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (88.914 KB) | DOI: 10.29122/jsti.v14i1.898

Abstract

The research objective was to determine the preferences panel of three clones of potato seed tubers G1 namely A5, PAS3063, PAS3064 and Granola and Atlantic cultivars as comparison varieties, as well as to determine levels of starch, sugar and water content. Based on the results of Kruskal Wallis test for flavor and texture parameters on the tuberswere not significantly different cooking shows, while the aroma and color were significantly different between clones / cultivars. Panelists on the test results for the parameters of boiled tubers taste, texture, aroma and color looks significantly different between clones / cultivars. Analysis of variance was significantly different levels of tuber starch content, sugar contentand moisture content. Gerombol analysis based on the preferences panel of taste, texture, aroma and color in fried and boiled potatoes indicate that the resemblance is closer to A5 Granola with similarity percentage of more than 54.76% and Atlantic closer resemblance to the PAS3063 and PAS3064 with similarity percentage of more than 77.38% .
BOILER BERBAHAN BAKAR SAMPAH anam, ahsonul
Jurnal Sains dan Teknologi Indonesia Vol. 10 No. 3 (2008)
Publisher : Badan Pengkajian dan Penerapan Teknologi

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (657.305 KB) | DOI: 10.29122/jsti.v10i3.802

Abstract

Municipal waste has high economic value if the organic and inorganic waste has been separated at the source. If organic and inorganic waste mixed, municipal waste has lower (no) value and environment harmful. There are many technologies for waste treatment i e steam generator using waste as fuel. The technology produces steam and reduces the waste significantly. The experiment of steam generation system performance has beendone with waste as fuel and kerosene as a comparator fuel. The experiment with waste fuel resulted the stable flame, odorless and the time for steam formation is faster compared to kerosene stove.
AKTIVITAS FITOHORMON INDOLE-3-ACETIC ACID (IAA) DARI BEBERAPA ISOLAT BAKTERI RIZOSFER DAN ENDOFIT sukmadi, R bambang
Jurnal Sains dan Teknologi Indonesia Vol. 14 No. 3 (2012)
Publisher : Badan Pengkajian dan Penerapan Teknologi

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (101.08 KB) | DOI: 10.29122/jsti.v14i3.930

Abstract

A total of 34 isolates of rhizosphere bacteria and endophytic bacteria have been isolated from several fruit and vegetable plants. Bacterial isolates were then screened to produce phytohormone indole-3-acetic acid (IAA) in a minimal medium (MM) with the addition of 1 g/l tryptophan as a precursor. Phytohormone production was carried out in an incubator shaker for 5 days at 28oC in a dark condition. IAA in the culture supernatant was extracted with ethyl acetate. The presence of IAA in the bacterial extract was detected using Thin Layer Chromatography (TLC). The concentration of IAA was determined quantitatively using High Performance LiquidChromatography (HPLC). The result showed that among 34 bacterial isolates, 20 isolates were able to produce IAA with different concentrations. The highest concentration of IAA (16,71 ppm) was produced by the endophytic bacteria isolated from twigs of starfruit plant. In addition, within the group of rhizosphere bacterial isolates, bacteria from kangkung plant was found to be the best one with IAA concentration of 10.99 ppm.
KARAKTER RUSIP DENGAN PENAMBAHAN KULTUR KERING : Streptococcus sp. koesoemawardani, Dyah; yuliana, nety
Jurnal Sains dan Teknologi Indonesia Vol. 11 No. 3 (2009)
Publisher : Badan Pengkajian dan Penerapan Teknologi

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (121.551 KB) | DOI: 10.29122/jsti.v11i3.834

Abstract

This research aimed to (1) compare the characterization between rusip with Streptococcus sp. and without it, and (2) evaluate chemical, and microbiological. This research done in some steps which was (1) preparation of liquid starter, (2) making of dry starter, (3) application of Streptococcus sp. dry starter to rusip, the water content, level of acidity (pH), total lactic acid bacterial, total fungi, salt content and Nitrogen Volatile Total (NVT) are being monitory. The data were analysed by descriptively. Rusip that fermented for seven days with adding of Streptococcus sp.dry culture produced better pH, total of lactic acid bacterial, salt content, NVT content and also produce higher water content compare with spontaneously fermented rusip. However rusip fermented with adding of Streptococcus sp. dry starter still had weakness that was produce more fungi than spontaneouslyfermented rusip. Characteristic of rusip that fermented with adding of Streptococcus sp. dry starter were : content 57,87% of water, 5,77 pH, 3,98 x 1011 cfu/g of total lactic acid bacterial, 24,64% salt and 51,43 mgN/100g NVT
Analisis Penggunaan Dan Kesesuaian Lahan Berdasarkan Potensi Bahaya Letusan Gunung Merapi Soewandita, Hasmana; Sudiana, Nana
Jurnal Sains dan Teknologi Indonesia Vol. 16 No. 3 (2014)
Publisher : Badan Pengkajian dan Penerapan Teknologi

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1443.284 KB) | DOI: 10.29122/jsti.v16i3.3418

Abstract

Mount Merapi is a mountain that is classified as active and relatively frequent eruption frequency. The impact caused by the eruption of Mount Merapi classified terrible and the impact on the loss of property, infrastructure to fatalities. Merapi disaster-prone areas covering up areas inhabited and cultivated areas. The purpose of this activity is to provide direction and suitability of land use is associated with a disaster prone area. The method is based on the analytic descriptive field survey and analysis of maps (land use and disaster-prone areas). The analysis showed that the cultivated area is still occupied by the public is directed to land penmggunaan perennials with a combination of food crops. Plants are easy succession directed at plants that have root weevil, because these plants will quickly grow after the impact of the eruption of Merapi. Likewise perennials that have a Poster (grow) back as horticultural crops (Avocado, Lengkeng, Mahony), while the fast-growing plants sengon though but flammable.Gunung Merapi merupakan gunung yang tergolong aktif dan frekwensi erupsi tergolong sering terjadi. Dampak yang ditimbulkan akibat letusan Gunung Merapi tergolong dasyat dan berdampak terhadap kerugian harta benda, infrastruktur hingga korban jiwa. Kawasan rawan bencana Merapi meliputi hingga kawasan yang berpenghuni dan kawasan budidaya (tegalan dan kebun campuran). Tujuan dari kegiatan ini adalah untuk memberikan arahan penggunaan dan kesesuaian lahan dikaitkan dengan kawasan rawan bencana. Metoda yang digunakan adalah diskriptif analitik dengan berdasarkan hasil survey lapang dan analisis peta (penggunaan lahan dan kawasan rawan bencana). Hasil analisis menunjukkan bahwa kawasan budidaya yang masih diokupasi oleh masyarakat diarahkan untuk penggunaan lahan tanaman keras dengan kombinasi tanaman pangan. Tanaman yang mudah suksesi diarahkan pada tanaman yang mempunyai bonggol akar, dikarenakan tanaman ini akan cepat tumbuh setelah terjadi dampak letusan Merapi. Begitu juga tanaman keras yang mempunyai daya trubus (tumbuh) kembali seperti tanaman hortikultura (Alpukat, Lengkeng, Mahoni), sedangkan tanaman sengon meskipun cepat tumbuh akan tetapi mudah terbakar.Keywords: eruption, land use, land suitability
PRINSIP DAN STRATEGI PENERAPAN “PUBLIC PRIVATE PARTNERSHIP” DALAM PENYEDIAAN INFRASTRUKTUR TRANSPORTASI utama, dwinanta
Jurnal Sains dan Teknologi Indonesia Vol. 12 No. 3 (2010)
Publisher : Badan Pengkajian dan Penerapan Teknologi

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (146.087 KB) | DOI: 10.29122/jsti.v12i3.857

Abstract

Public Private Partnership (PPP), recently is becoming popular issue among stakeholders in infrastructure development in Indonesia. In other countries, infrastructure facilities such as Toll Road, Water Supply Network, Electricity Power, Harbour, Airport, Health Services, and Education have already been using PPP scheme. PPP is needed due to the limitation of government budget, infrastructure life time based on the quantity and the quality, and also the private sector skill/technology capability. In term of infrastructure quality competitiveness, based on the survey resulted in the World Competitiveness Report 2008-2009, showed that Indonesia is on the 96th rank among 134 countires surveyed. It can be argued that Indonesian infrastructure quality is still low in comparison to the other South East Asian Countries, even from its neighborhood countries. Government budget for infrastructure investment including transportation in 2010-2014 is very limited namely around 32% including from bilateral and multilateral loan. Therefore the 62% government budget remains must be fulfilled by another scheme such as Public Private Partnership.
TEKNOLOGI REMOTE SENSING DAN GIS UNTUK ZONASI KOMODITAS DAN KETERSEDIAAN SUMBERDAYA LAHAN Mubekti, Mubekti; Rahmadi, A; Rintung, S
Jurnal Sains dan Teknologi Indonesia Vol. 8 No. 3 (2006)
Publisher : Badan Pengkajian dan Penerapan Teknologi

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (254.53 KB) | DOI: 10.29122/jsti.v8i3.761

Abstract

One aspect of the agricultural development is an information corresponding to potency and availability of land resources for both intensification and extensification. In order to derive a such information, a study on Remote Sensing and GIS Technology Application for Agro-ecological and Land Resource Zoning has been done in Agam District, West Sumatra. The aim of the study is to set up maps of agro-ecological zone and its availability for a sustain agricultural development. A brief explanation of the methodology used in the study is presented referring to FAO procedure. The step of the activities consist of secondary data compilation, field survey, spatial analysis, and mapping. All of the spatial data analysis were conducted by using GIS and Remote Sensing soft-wares, that is to say, Arc-View and ER-Mapper. Explanation of the physical environment are exposed as preliminary knowledge of the study area. The results of the land evaluation for agricultural cultivation are divided into three groups, those are (a) Food crops and vegetables, (b) food crops, vegetables and annual crops, and (c) Annual crops. Those of each group has 43,079 hectares (19.3 % of district area), 29,514 hectares (13.2 % of district area), and 56,390 hectares (25.3 % of district area) that suitable for corresponding agricultural development, respectively. The rest covering 42.21 % of the district area are not suitable for agricultural cultivation because of natural limiting factors, such as topography, soil and climate. Regarding to the existing land use, not all suitable lands are available for agriculture extension. In this evaluation, 32,009 hectares or 14.3 % of the district area are available for those of agriculture extension.

Page 6 of 24 | Total Record : 236

 4   5   6   7   8 

Filter by Year

2006 2015


Reset
Filter By Issues
All Issue Vol. 17 No. 3 (2015) Vol. 17 No. 2 (2015) Vol. 17 No. 1 (2015) Vol. 16 No. 3 (2014) Vol. 16 No. 2 (2014) Vol. 16 No. 1 (2014) Vol. 15 No. 3 (2013) Vol. 15 No. 2 (2013) Vol. 15 No. 1 (2013) Vol. 14 No. 3 (2012) Vol. 14 No. 2 (2012) Vol. 14 No. 1 (2012) Vol. 13 No. 3 (2011) Vol. 13 No. 2 (2011) Vol. 13 No. 1 (2011) Vol. 12 No. 3 (2010) Vol. 12 No. 1 (2010) Vol. 11 No. 3 (2009) Vol. 11 No. 2 (2009) Vol. 11 No. 1 (2009) Vol. 10 No. 3 (2008) Vol. 10 No. 2 (2008) Vol. 10 No. 1 (2008) Vol. 9 No. 3 (2007) Vol. 9 No. 2 (2007) Vol. 9 No. 1 (2007) Vol. 8 No. 3 (2006) Vol. 8 No. 2 (2006) Vol. 8 No. 1 (2006) More Issue