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Published by Pusbindiklat Peneliti LIPI

ISSN : - EISSN : 24610976 DOI : 10.14203

Aerospace Engineering Astronomy Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Electrical & Electronics Engineering Energy Engineering Immunology & microbiology Industrial & Manufacturing Engineering Library & Information Science Materials Science & Nanotechnology Mechanical Engineering Neuroscience Physics

Widyariset is a scientific journal which publishes the results of research and development, assessment, and systematic thinking about Natural Science.

Arjuna Subject : Umum - Umum

Articles 24 Documents

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Search results for , issue "Vol 15, No 3 (2012): Widyariset" : 24 Documents clear

THERMAL PERFORMANCE OF TRADITIONAL HOUSE UMA KBUBU Rini Nugrahaeni; I Ketut Suwantara
Widyariset Vol 15, No 3 (2012): Widyariset
Publisher : Pusbindiklat - LIPI

This study identified thermal performances of Uma Kbubu in Maslete village, which include the characterof thermal building and thermal comfort of occupants. Thermal values was measured by Hioki data Logger, Thermocoupletype T, Questemp 34, Anometer Kanomax, and closed questioner to get thermal responsed of occupants.Data was analysed by linear regression and comparation of building’s thermal characteristic between rainy anddry season. Study shows that Uma Kbubu has good thermal performance in rainy and dry season, and capableof creating thermal comfort for its occupants. Roof as building envelope has significant influence to thermalperformance of Uma Kbubu, while the wall had no significant effect. Neutral temperature was 24,6oC on rainyseason and 27,6 oC on dry season.

ANALISYS OF AIR POLLUTER SO2, NO2, AND HC BY USING LINE SOURCE MODELING APPROACH (CASE STUDY AT JALAN MAGELANG YOGYAKARTA) Ahmad Zaky Maulana
Widyariset Vol 15, No 3 (2012): Widyariset
Publisher : Pusbindiklat - LIPI

This research discuss the issue of air pollution caused by movable emission in Jalan Magelang, Yogyakarta.The objective of this research is to estimate the weight of emission resulted from motor vehicle pollution. Tocalculate polluter concentration, this research use line source modelling. The result shows that the bigger polluterconcentration is NO2 that reach 211,342 μg/m3 in the daytime. The bigger polluter contributer are pick up/trucktype vehicles. The heaviest polluter weight is NO2 that reach 299 ton/year.

TECTONIC STRAIN AND SEISMIC HAZARD ESTIMATION IN SUNDA STRAIT BASED ON GPS OBSERVATION DATA Marta Nugraha Hidayat; Irwan Meilano; Irwan Gumilar
Widyariset Vol 15, No 3 (2012): Widyariset
Publisher : Pusbindiklat - LIPI

Sunda strait has a relatively high seismic activity. The high seismic activity was caused by the seismic zoneat that region, including the faults zone. Based on the high seismic activity in the Sunda Strait, it is necessary to doresearch about the strain that occurred in the Sunda Strait region to determine the tectonic activity in that area andits seismic hazard. To observe the tectonic activity in the Sunda Strait, GPS observations were made periodicallywith static differential method at the observation points located in the Sunda Strait region. Based on the strainanalysis, the southwestern part of the Sunda Strait tend to experience compression and the northeastern part tendto experience extention. Sunda Strait had a relatively high seismic hazard with maximum PGA 0,47 g.

WEIGHT GAIN AND HEALTH CONDITION OF PREGNANT MACACA FASCICULARIS AT PT BIO FARMA (PERSERO) Mieska Despitasari
Widyariset Vol 15, No 3 (2012): Widyariset
Publisher : Pusbindiklat - LIPI

produced vaccines. This research aims to study the increase in body weight and health condition of M. fascicularisin PT Bio Farma’s captivity. Nine M. fascicularis were grouped into three treatments of feeding trials with differentprotein levels. Data were analyzed by Analysis of Variance. Highest protein level showed the highest proteinintake (16,28±0,62%) with highest feeding efficiency (94,72±3,60%). It gave effect on the high total weight gain.M. fascicularis’ health condition was measured by total plasma protein and hemoglobin levels. The highest totalprotein plasma level has been performed by the objects who take the highest protein level. Results showed thatmonkeys’ hemoglobin levels were decreased -- except monkeys that take 12,91% protein level – this is the indicationof nutritional anemia during pregnancy.

COSINE ERROR REDUCTION ON THE UNIVERSAL MEASURING MACHINE CALIBRATION USING DISPLACEMENT LASER INTERFEROMETER Ardi Rahman
Widyariset Vol 15, No 3 (2012): Widyariset
Publisher : Pusbindiklat - LIPI

The calibration is important for many people as it can guarantee the traceability of measurement. Universalmeasuring machine is one of the coordinate measuring machine which is capable to calibrate the amount ofdimensional measurement standards, while, the UMM was calibrated by displacement laser interferometer. Inthe UMM calibration, cosine error was occurred, where the measurement result value is greater than the actualdimension value. The aim of this research was to reduce the cosine error in the UMM calibration using the DLIby adjusting the DLI optics. The results showed that the cosine error was decreased 10 μm compared to the 2006calibration data, and the uncertainty of measurement decrease of 61.5%.

SELECTION OF CROSSING FACILITIES BASED ON CRITICAL GAP (CASE STUDY DHARMAWANGSA STREET, SURABAYA) Edwin Hidayat
Widyariset Vol 15, No 3 (2012): Widyariset
Publisher : Pusbindiklat - LIPI

Pedestrians have a high risk to be hit by motor vehicle when they crossed the street, thus the choose ofappropriate cross facilities are very important. An alternative for choosing cross facilities are by using the CriticalGap method. This method is used to measure the possibility of crossing the street safely. This study was startedby gathering primary data for 4 hours at the traffic peak hours. From the calculation, the case of DharmawangsaStreet, Surabaya, showed that the critical gap is about 3,55 seconds. The observation from 07.00-11.00 a.m.showed that the possibilities of crossing the road respectively are: 45, 55, 56, and 60. Compared to the numberpedestrians crossing the road, the research showed about 71, 24, 33, and 49 peoples. In this case, the possibility ofcrossing the street at 07.00-08.00 a.m. cannot be fulfilled. Meanwhile, the possibility to cross the street with safelyat 08.00-11.00 a.m. can be fulfilled. Therefore, the use of midblock crosses is still relevant.

CORRELATION DIVERSITY OF BACTERIA TO SECONDARY META BOLITES Nephthea spp. from SERIBU ISLANDS NATIONAL PARKS WATERS Gintung Patantis; Hedi Indra Januar; Ekowati Chasanah
Widyariset Vol 15, No 3 (2012): Widyariset
Publisher : Pusbindiklat - LIPI

Bioactive compounds from biota on coral reef is potentially of plasma nutfah that has high economic value.Their existence was influenced by the microbes which associated with them and the environmental conditions. Theaim of the research was to analyze the correlation between the diversity of bacteria and secondary metabolitesNephthea spp. collected from Seribu Islands National Parks (TNKpS). The analysis of bacteria diversity performedby Terminal Restriction Fragment Length Polymorphism (T-RFLP) and secondary metabolites used High PerformanceLiquid Chromatography (HPLC). The results of study showed that the range of diversity index (H), richness(R), and evenness index (E) of bacteria were 1,47–0,88; 13–3; 0,84–0,43. And the for the secondary metabolitesthe range were 2,21–1,12; 20-5; 0,95–0,63. Further study showed that there was a significant correlation (R =0.96 at p< 0.01) between bacteria and secondary metabolites group richness. The area which high diversity ofbacteria and secondary metabolites were within central and southern TNKpS waters. This results were in line withthe best water quality in these areas.

UTILIZATION OF FORMOSAT-3/COSMIC GPS RADIO OCCULTATION DATA FOR PRECIPITABLE WATER VAPOR ESTIMATING IN THE ATMOSPHERE - Noersomadi
Widyariset Vol 15, No 3 (2012): Widyariset
Publisher : Pusbindiklat - LIPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/widyariset.15.3.2012.629–636

Utilization of FORMOSAT-3/COSMIC satellite data using GPSRO for atmospheric Precipitable WaterVapor (PWV) estimating has been done. This research analyzed comparison between daily PWV profile from radiosondeand GPSRO observations during 2007. Used radiosonde data were from obervation at Soekarno-HattaAirport, Jakarta. While GPSRO data were determined by finding the nearest occultation locations with radiosondelaunching in the same day. Extrapolation method has been applied for estimating data which were not recordedabove surface. Results showed before and after applying extrapolation method on GPSRO data, the linear correlationbetween PWV derived from both of observations technique are 0.657 and 0.849 respectively. Applicationof PWV from GPSRO was shown in hovmoller diagram during 2 January to 19 May 2011. The estimation duringthat period are between 10 to 55 mm, which described the existence of Madden Julian Oscillation. Hence, theseresults depicted that GPSRO can be utilized for PWV estimation that could be continued to enhance precipitationmodelling.

DEVELOPMENT PROGRAM FOR CALCULATION OF MATERIAL DIFFUSION COEFFICIENT IN SURFACE ENGINEERING Jan Setiawan
Widyariset Vol 15, No 3 (2012): Widyariset
Publisher : Pusbindiklat - LIPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/widyariset.15.3.2012.551–556

A program to calculate the diffusion coefficient and predicting the depth, time and temperature of diffusionhas been developed. It is shown that the calculation result is in good agreement with the known conventionalone. The program has been developed using Visual Basic based on the Fick’s II law and the diffusion coefficientequation as an exponential function of temperature. It is argued that the program could improve the accuracy ofthe calculation of diffusion coefficient, depth, time and temperature which are important to improve the diffusionprocess efficiency.

The role of biotechnology for improvement of soybean production in sub-optimal land Suyanto Pawiroharsono
Widyariset Vol 15, No 3 (2012): Widyariset
Publisher : Pusbindiklat - LIPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/widyariset.15.3.2012.665–672

Soybean is the one of the most important food commodities after rice and maize. It is considered as significantprotein sources and is also used as raw material for several foods and feeds industries. The availabilityof soybean is mostly fulfilled from import, namely around 60% or 1.2 million ton/year. Therefore, the increaseof soybean productivity is an opportunity that should to be executed for minimizing the dependency of importedproduct. The development of soybean productivity for self supporting is very reasonable. The potencies, such as thetechnologies readiness (tolerant superior varieties and bio-fertilizer) and farming technology, are considered assuccess factors for supporting the increase of soybean productivities in sub-optimal lands. Meanwhile, the potencyof sub-optimal land for agriculture is still large quantity, namely 30.67 million hectares. The successful requiresthe supports of government policies and their commitments as well as the participation of farmer communities.

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Home Page

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Contact Name
Andri Rahman

Contact Email
andri.agus.rahman@lipi.go.id

Phone
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Journal Mail Official
widyariset@mail.lipi.go.id

Editorial Address
Pusbindiklat LIPI, Jl. Raya Bogor Km. 46, Cibinong Science Center, Cibinong - Bogor 16911

Location
Kab. bogor,

Jawa barat

INDONESIA