Garuda - Garba Rujukan Digital

Article Per Year (5 Year)

All

JURNAL SAINS DAN TEKNOLOGI INDONESIA

jsti
Website

Published by Badan Pengkajian dan Penerapan Teknologi

ISSN : - EISSN : - DOI : -

Core Subject : Science, Education,

Computer Science & IT Education

Arjuna Subject : -

Articles 236 Documents

1 2 3 4 5

PERILAKU TIANG BOR PENOPANG INFRASTRUKTUR PADA TANAH LUNAK AKIBAT BEBAN STATIK Aspar, Wimpie Agoeng N.
Jurnal Sains dan Teknologi Indonesia Vol. 12 No. 3 (2010)
Publisher : Badan Pengkajian dan Penerapan Teknologi

Bored piles have been used to support transportation infrastructures (offices, a terminal building, power house, warehouses and workshop) in a harbor. The bored piles were penetrated into mostly old alluvial deposits and dilluvial deposits of very stiff marine clay with traces of shell debris. A bored pile was tested as part of this research program to verify the accuracy of the predicted pile capacities. The proposed static prediction capacity methods include Meyerhof, a, b and l methods. The results of the analysis show that Meyerhof method (1951) with inputs of laboratory test data provides closely agreement with static loading test results. The other methods give somewhat conservative prediction. This paper discusses bearing capacity analysis of bored piles based on soil characteristics and static loading test results. Results of the analysis indicate that the bored piles capable of resisting load transmitted from the upper structure. The research will be of interest to many practicing engineers using this kind of piles.

PENGARUH SITOTOKSIK EKSTRAK BUAH MAHKOTADEWA [Phaleria macrocarpa (Scheff) Boerl.] TERHADAP SEL KANKER LESTARI HeLA Pertamawati, Pertamawati
Jurnal Sains dan Teknologi Indonesia Vol. 9 No. 1 (2007)
Publisher : Badan Pengkajian dan Penerapan Teknologi

Fruits of mahkotadewa (Phaleria macrocarpa (Scheff) Boerl). has been used to cure various health problems, including empirical treatment for cancer. The therapeutic effect of natural material is related to the chemical compounds it contain. In fruits of Phaleria macrocarpa, various chemicals are present such as flavonoid and tannin, both show anticancer activity, as well as other unknown ones presumably supportive for cancer treatment. An in vitro experiment is therefore set up with the objective of examining the effect of fruit extract on human uterine cervical carcinoma cells (HeLa cells). Various concentrations: 5, 10, 25, 50 and 100 ppm of fruit extract were evaluated. Observations were made 24, 72 and 120 hour after incubating HeLa cells in each treatments. The results showed that fruit might inhibit the growth of HeLa cells. Inhibitory concentration (IC50) of fruit extract after 24 hours of incubation is 6,21 ppm, after 72 hour of incubation is 5,09 ppm dan 5,73 ppm for 120 hour of incubation. Inhibitory potential of fruits in 72 hour of incubation is a highest ones. The effect might be associated to the active compounds contained in these material.

BUDIDAYA SAMBILOTO DI ANTARA TEGAKAN TANAMAN TAHUNAN PADA WILAYAH PERKEBUNAN jufri, akhmad; utami, noorwitri
Jurnal Sains dan Teknologi Indonesia Vol. 14 No. 1 (2012)
Publisher : Badan Pengkajian dan Penerapan Teknologi

One of alternatives to extend planted area for creat (Andrographis paniculata Ness) is the cultivation in estate areas. The problems to cultivate the plant in this area are shading and water availability. The objective of the research is to describe and evaluate the cultivation of creat between annual tree crops in the estate area. Lands were cleared and plowed to form plots with 20 m x 1.5 m ridge. The seedlings of creat were transplanted in beded soil at a distance of 40 cm and 40 cm. Plants were harvested before inflorencence. The yiled was 1.650 kg herb and It gave Rp 6182 net income per plot The shading caused by the trees around the plants decreased the content of andrographolide until 50 %.

ANALISIS MORFOLOGI DAN GEOLOGI BENCANA TANAH LONGSOR DI DESA LEDOKSARI KABUPATEN KARANGANYAR Prawiradisastra, Suryana
Jurnal Sains dan Teknologi Indonesia Vol. 10 No. 2 (2008)
Publisher : Badan Pengkajian dan Penerapan Teknologi

Karanganyar administratively belongs to Central Java Province, the average height is 511 meters on the sea surface and the climate is tropic with temperature 22º - 31º. The area of Karanganyar district is 77,378.6374 ha, which consists of the rice field 22,844.2597 ha and the dry ground is 54,534.3777 ha. Based on data from six weather forecast offices located in Karanganyar, the number of rain day during 2005 year were 99 days with the average of rainfall 6,017 mm, where the highestrainfall happened in March and the lowest happened in July and in August. The northern part occupied by the Lawu volcano is a part of the active Quarternary volcanic zone. Hills north of Tirtomoyo river, are a folding hills showing a NE-SW direction. Morphogenetically, the mountainous terrain in this area is influenced by structure and lithologic characteristics.

PERTUMBUHAN, KUANTITAS DAN KUALITAS RIMPANG JAHE (Zingiber officinale Roscoe) PADA CEKAMAN KEKERINGAN DI BAWAH NAUNGAN Devy, Lukita; Nawfetrias, Winda
Jurnal Sains dan Teknologi Indonesia Vol. 14 No. 3 (2012)
Publisher : Badan Pengkajian dan Penerapan Teknologi

This research studied the growth, quantity and quality of ginger rhizome under drought stress condition. The drought stress condition was 60% of soil field capacity. This experiment was arranged in randomized complete block designed. The treatments were drought stress periods (6, 4, 2 and 0 week before harvesting) with six replications. The result showed that drought stress period affected the quantity (rhizome dry weight) and quality (gingerol content) of ginger. Rhizome dry weight was decreased with the increase of drought stress period, while gingerol content showed opposite trend.

KELAYAKAN PERKEBUNAN KELAPA SAWIT DI PAPUA djawardi, djawardi
Jurnal Sains dan Teknologi Indonesia Vol. 11 No. 3 (2009)
Publisher : Badan Pengkajian dan Penerapan Teknologi

The trading of palm oil in the world from year to year increasing. Along with improvement request of palm oil needed by a adequate palm plantation development. Indonesia as second biggest producer in world also have the importance to extend areal palm plantation. The Extension potency of palm plantation instructed in East Indonesia region. One of big potency is Papua. For development palm plantation in Papua needed a feasibility study. The result of feasibility study an IRR (Internal Rate of Return) of 19.77%; a NPV (Net Present Value) of Rp.180.956.970.000,00; a Profitability Index of 1,11; a BEP (Break Event Point) of 11.499.970 kilograms and Payback Period of 6 year and 2 month. Based on this study, development of Palm plantation is feasible to be implementation in Papua

Bencana Kabut Asap Akibat Kebakaran Hutan Dan Lahan Serta Pengaruhnya Terhadap Kualitas Udara Di Provinsi Riau Februari Ã¢â‚¬â€œ Maret 2014 Mulyana, Erwin
Jurnal Sains dan Teknologi Indonesia Vol. 16 No. 3 (2014)
Publisher : Badan Pengkajian dan Penerapan Teknologi

Analysis of land and forest fire has been conducted in relation with smoke haze disaster in Riau province during February and March 2014. Daily hotspot data from NOAA 18 and daily ISPU (Standard Air Pollutant Index) data of the ministry of environment are used in this study. Air quality has been categorized as dangerous for several days with ISPU exceeding 500. The number of hotspot indicating the forest fire reaches 2543, with 1319 hotspots detected in February 2014 and 1224 hotspots in March 2014. The highest number of hotspot is occurred on February 11 with 243 hotspots, while 171 hotspots are detected on March 27.The hotspot distribution is concentrated in Bengkalis with the number of 650 which is 25.6% of total hotspots in Riau Province, followed by Pelalawan with 350 hotspots (13.8%), Siak with 311 hotspots (12.2%), Indragiri Hilir with 309 hotspots (12.2%), Rokan Hilir with 286 hotspots (11.2%), Meranti with 232 hotspots (9.1%), and Dumai with 220 hotspots (8.7%).Telah dilakukan analisis kebakaran hutan dan lahan terhadap bencana kabut asap di Provinsi Riau pada bulan Februari dan Maret 2014. Data harian hotspot dari NOAA 18 dan data harian ISPU dari Kementerian Lingkungan Hidup digunakan dalam penelitian ini. Kualitas udara dalam beberapa hari sempat masuk kategori Berbahaya dengan nilai ISPU >500. Jumlah hotspot yang menunjukkan adanya kebakaran hutan dan lahan mencapai 2.543 titik Bulan Februari 2014 terdapat 1.319 titik hotspot sedangkan bulan Maret 2014 terdapat 1.224 titik hotspot. Jumlah hotspot terbanyak pada bulan Februari 2014 terjadi pada tanggal 11 Februari (243 titik) sedangkan pada bulan Maret 2014 terjadi pada tanggal 27 Maret (171 titik). Sebaran titik panas terkonsentrasi di Kabupaten Bengkalis sebanyak 650 titik atau 25,6 % dari total hotspot yang ada di Provinsi Riau. Jumlah terbanyak berikutnya adalah Kabupaten Pelalawan 350 titik (13,8 %), Kabupaten Siak 311 titik (12,2 %), Kabupaten Indragiri Hilir 309 titik (12,2 %), Kabupaten Rokan Hilir 286 titik (11,2 %), Kabupaten Meranti 232 titik (9,1 %), dan Dumai 220 titik (8,7 %).Keywords: Smoke haze, air quality, hotspot, land and forest fire.

MODEL DISTRIBUSI PERJALANAN PENDUDUK UNTUK PENENTUAN KORIDOR Ã¢â‚¬ËœLRTÃ¢â‚¬â„¢ DI PULAU BATAM Prijo Utomo, Djoko
Jurnal Sains dan Teknologi Indonesia Vol. 12 No. 3 (2010)
Publisher : Badan Pengkajian dan Penerapan Teknologi

In consequence of the increasing of regional economic activities in Pulau Batam, a reliable transportation system is required. Decreasing road network performance as a result of increasing traffic volume needs a strategic planning to anticipate the worsening condition in the future. One of the solutions is by providing mass transit system which is expected to attract private car users. Therefore, determination of potential corridor of mass transit system need to be identified so that the system provide better accessibility. Trip pattern in Pulau Batam must be known by developing trip distribution model. The trip distribution model is calibrated using origin-destination (O-D) data that is based on home interview survey. The validated model will be used to forecast and simulate travel demand onto transport network. Result of model calibration process shows mean trip length difference between model and survey is equal 0.141 %. From simulation of trip assignment is obtained that potential corridor for mass transit system using LRT is Batu Ampar – Batu Aji via Muka Kuning. Passenger forecast in the year 2030 is 193,990 passenger/day (2 directions).

KARAKTERISTIK DIREKSIONAL KOPLER MENGGUNAKAN TEORI MODA TERGANDENG DAN METHOD OF LINES Syahriar, ary; Adam, Helmi
Jurnal Sains dan Teknologi Indonesia Vol. 8 No. 3 (2006)
Publisher : Badan Pengkajian dan Penerapan Teknologi

Single mode directional couplers are key components in many optical communication and sensor applications, including optical power splitting, optical filtering, optical reflecting, wavelength multiplexing/demultiplexing, and optical polarisation splitting. The general basic principle in most directional coupler is that under appropriate conditions light transfer can occur between the two adjacent fiber cores via a mechanism called evanescent wave coupling. When the two cores are put closely together the evanescent field travelling from the throughput fiber reaches the coupled waveguide and excite a mode in it. In this paper we use two approaches in analyzing the properties of directional couplers, namely the coupled mode thery and the method of lines. it is found that the two methods agree very well.

PENGUATAN KLASTER PANGAN OLAHAN BERBASIS MOCAF DI KABUPATEN BLITAR Sidik, Muhammad Ansorudin
Jurnal Sains dan Teknologi Indonesia Vol. 13 No. 3 (2011)
Publisher : Badan Pengkajian dan Penerapan Teknologi

As its food diversification effort, Blitar develops modified cassava flour (mocaf) using cassava as raw material. Mocaf is considered as one of agricultural commodities with good prospect for development. Sari Raos food processing cluster is one of Putri Kencana programs. A study on this cluster, using Porter’s Four Diamond Framework, has been conducted for two years. The result shows that mocaf based food processing industrial cluster in Blitar canbe synergized with in the Sourthern region of Java. Strategies to develop/strengthen the cluster can be implemented with the programs of Blitar local government.

Page 1 of 24 | Total Record : 236

1 2 3 4 5

Filter by Year

2006 2015

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

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

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

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

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Contact Name
-

Contact Email
-

Phone
-

Journal Mail Official
-

Editorial Address
-

Location
Kota adm. jakarta pusat,

Dki jakarta

INDONESIA