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Widyariset

widyariset
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Published by Lembaga Ilmu Pengetahuan Indonesia

ISSN : 14117932 EISSN : 24610976 DOI : -

Core Subject : Engineering,

Engineering

Widyariset is a scientific journal which publishes the results of research and development, assessment and systematic thinking about science and technology. The writers of the scientific papers in this journal come from researchers/researcher candidates from various institutions' research and development (R&D), and universities. Widyariset is published regularly three times a year: in April for the issue of Social Sciences and Humanities (IPSK), in August for the issue of Natural Sciences (IPA) and in December for the issue of Engineering Sciences (IPT).

Arjuna Subject : -

Articles 25 Documents

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Search results for , issue "Vol 15, No 3 (2012): Widyariset" : 25 Documents clear

COMPATIBILITY OF CHARACTERISTIC OF HYDROLIC RAM PUMP AND RAIN HARVEST TECHNOLOGY WITH LOCAL CHARACTERISTICS IN ENDE REGENCY, EAST NUSA TENGGARA Made Widiadnyana Wardiha; Pradwi Sukma Ayu Putri; Iwan Suprijanto
Widyariset Vol 15, No 3 (2012): Widyariset
Publisher : Pusbindiklat - LIPI

A study about compatibility of characteristic of hydraulic rams (hidram) pump and rain harvest with localcharacteristics (location and society) in Ende Regency, East Nusa Tenggara, has been done. Data includingsecondary data such as characteristic of hidram pump and rain harvest, and primary data from questionnaire.The respondent are from stakeholders in Ende Regency such as public works department, regional company forwater supply (PDAM), regional agency for development planning (Bappeda), and water supply consultant. Dataanalysis was using descriptive analysis. Compatibility of technology application is seen in the aspect of needs,society empowerment, energy saving, cost, social, and cultural at Ende Regency. The study result showed thathidram pump technology compatible to be applied in Ende but needs to be studied about material standard andmodification for increasing efficiency of hidram pump. Rain harvest technology can be applied at Ende but need amodification about disinfection and filtering process before consumed.

GROUNDWATER LEVEL FLOW MAPPING IN VICINITY OF PROPOSED JATIGEDE DAM Yan Adhitya Wesda Wardhana; Heni Rengganis
Widyariset Vol 15, No 3 (2012): Widyariset
Publisher : Pusbindiklat - LIPI

Jatigede Dam development that aims to tackle the water problems that exist in West Java of great importance.Positive impact arising from development of this Dam is rising shallow groundwater at the dug wells population.To prove this, needs to be monitoring of shallow groundwater in the area around the pool area will Jatigede Dam.This monitoring has been ongoing since the year 2008 up to this time, either during the rainy season and dryseason. This study aims to determine fluctuation of shallow groundwater in the wet season and dry before the damflooded, while also to know the flow of shallow groundwater through contour mapping shallow groundwater. Theresults obtained in the form of shallow ground water level fluctuations from 2008 through 2011, and map the flowof groundwater. Advance groundwater monitoring will be carried out until the reservoir is filled with water thatplanned in 2013.

MODELING OF OIL SPILL ON MONTARA WELL HEAD PLATFORM IN THE TIMOR SEA - Lukijanto; Andri Purwandani
Widyariset Vol 15, No 3 (2012): Widyariset
Publisher : Pusbindiklat - LIPI

Modeling of oil spill on Montara well head platform in the Timor Sea, with short-term period from August 20,2009 until January 5, 2010 has been conducted. The purpose of this study was to examine the pattern of the spreadof oil spills (the distribution, the areas of oil exposure, concentration of the oil spill and the time of exposure)which was a possible entry into the Exclusive Economic Zone (EEZ) of Indonesia. The results indicated that an oilspill scenario of 400, 1,500 and 2,000 barrels per day were obtained the maximum value of the oil concentrationof 54.0 ppm, 202.4 ppm and 270 ppm, respectively. The total area of oil spill exposure in EEZ of Indonesia wasabout 41,360 km2 with an average maximum area exposed for 2 hours and a maximum of 3:29 hours. Comparisonbetween the results of oil spill modeling with image analysis of Modis Aqua and Terra (SkyTruth) were obtainedthat the extent of distribution and movement patterns differ from one to another. Furthermore, the verification andvalidation of the modeling results with the field data are still required.

THE DYNAMICS OF ACTINOBACTERIA COMMUNITY DURING COMPOSTING Mukhlissul Faatih
Widyariset Vol 15, No 3 (2012): Widyariset
Publisher : Pusbindiklat - LIPI

The mesophilic, thermophilic, and maturation phases were recognized in the composting process. Temperaturechanges in the process influence the microbial communities in compost. Actinobacteria account for a largerpart of compost microbial population. The aim of this research was to study of Actinobacteria community duringcomposting of dairy-farm waste. Actinobacteria from the compost were isolated using selective media, starchnitratemedium and humic-acid+vitamins medium. The colour of colony and medium pigment were characterizedusing culture-dependent method. The results showed, total and resident Actinobacteria isolates from mesophilicphase is 29 and 24 isolates, 23 and 16 isolates from thermophilic phase, while 19 and 9 isolates from maturationphase. Twenty two isolates found in more than one phase. Thus, the dynamics of Actinobacteria was occurredwithin composting process.

CONFORMITY OF TELEVISION PRODUCT IN INDONESIA TO ELECTROMAGNETIC COMPATIBILITY STANDARD FOR RADIATED EMISSION TESTING PARAMETER Wisnu Ananda
Widyariset Vol 15, No 3 (2012): Widyariset
Publisher : Pusbindiklat - LIPI

Indonesia have not had regulations regarding Electromagnetic Compatibility (EMC) yet. But the conformityof electronic products, particularly television, on EMC standards is very important because the emission and immunityfactors of electronics products may affect human health and device performance. The undertaken activitieshere is an EMC testing for Radiated Emission parameter of 10 CRT TV’s and 3 LCD TV’s brands circulating inIndonesia. Test method and limit value used refers to the standard CISPR 13:2009 and done at the Laboratory ofElectronics and EMC Center for Material and Technical Products (B4T) Bandung from March to July 2011. Thepurpose of this activity is to provide an overview about conformity of television products in Indonesia against EMCstandard for Radiated Emission parameter. The results showed that only 3 brands of CRT TV and 1 brand of LCDTV conform to the standard CISPR 13:2009.

COMBINING ABILITY AND HETEROSIS OF CHILLI (Capsicum annuum) RESISTANCE TO ANTHRACNOSE Yulia Irawati; Sriani Sujiprihati; Widodo -
Widyariset Vol 15, No 3 (2012): Widyariset
Publisher : Pusbindiklat - LIPI

Anthracnose (Colletotrichum acutatum) is considered as the major disease in chilli. Resistant variety isimportant for controlling infection of disease, since fungicide application and other cultural controlled methodswere not effective. The aim of this research was to estimate combining ability and heterosis of chilli resistanceto anthracnose. Set population of half diallel crosses which involved 6 parents and 15 crosses with C. acutatumisolate BKT 04 were used in this experiment. Mature green fruit were inoculated using a microinjection method.Disease resistant percentage and lesion diameter were used for estimating of combining ability. Disease incidenceand lesion diameter were used for estimating heterosis. General combining ability of IPB C15 was high for diseaseresistance percentage and lesion diameter. Specific combining ability of IPB C15 x IPB C9 was high for diseaseresistance percentage and specific combining ability of IPB C15 x IPB C10 and IPB C4 x IPB C2 were high forlesion diameter. Negative heterosis was expected in disease resistance traits; IPB C15 x IPB C9 had negativeheterosis for disease incidence and IPB C10 x IPB C9 had negative heterosis for lesion diameter.

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.

DRAG FORCE ANALYSIS OF EXTERNAL QUARK IN ROTATING AND STRONGLY INTERACTING QUARK GLUON PLASMA (QGP) USING STRING THEORY Ardian Nata Atmaja
Widyariset Vol 15, No 3 (2012): Widyariset
Publisher : Pusbindiklat - LIPI

In this paper, it is analyzed drag force of a quark in a rotating and strongly coupled Quark Gluon Plasma(QGP) by considering the motion of a string under background metric of rotating Banados-Teitelboim-Zanelli(BTZ) black hole. The non-trivial solution of string motion under rotating BTZ black hole depends on a constantmomentum conjugate which is fixed physically in all space. The drag force is characterized by the black hole’sparameters (curvature, mass and angular momentum) and angular velocity of the string. Moreover, it is also foundan external force term proportional to the angular momentum of the black hole in non-relativistic limit.

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.

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Pusbindiklat Peneliti-LIPI (The National Training and Education Center for Researchers Development – Indonesian Institutes of Sciences) Jl. Raya Bogor Km. 46, Cibinong Science Center Cibinong - Bogor 16911

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Location Kota adm. jakarta selatan, Dki jakarta INDONESIA

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Contact Name
-

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-

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

Editorial Address
Pusbindiklat Peneliti-LIPI (The National Training and Education Center for Researchers Development – Indonesian Institutes of Sciences) Jl. Raya Bogor Km. 46, Cibinong Science Center Cibinong - Bogor 16911

Location
Kota adm. jakarta selatan,

Dki jakarta

INDONESIA