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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 476 Documents

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STUDY OF ADAPTATION SIMULATION ON TERMAL COMFORT- ABLENESS LEVEL CAUSED BY GLOBAL CLIMATE CHANGE ON PADANG Sugeng Nugroho
Widyariset Vol 14, No 3 (2011): Widyariset
Publisher : Pusbindiklat - LIPI

Climate change will affect the thermal comfortableness level in the urban area therefore adaptation is needed to reduce its impact. Thermal comfortableness level was determined base on climate scenario data emission A2 and B2 on the period of 1961-2100. Adaptation simulation is conducted by modifying mean radiant temperature, increasing wind speed and cloth coeffi cient value on the thermal comfortableness level calculation. Result showed that generally, thermal comfortableness level in Padang on the period of 1961-2100 was in the uncomfort level category. Adaptation simulation which had the most infl uence on the thermal comfortableness level was by modify-ing mean radiant temperature and increasing wind speed on the original data.

ENVIRONMENTAL RISK FACTORS IN THE HOUSE AND PNEUMONIA IN TODDLERS IN INDONESIA 2007 Khadijah Azhar
Widyariset Vol 15, No 2 (2012): Widyariset
Publisher : Pusbindiklat - LIPI

Pneumonia constitutes the greatest disease that causing death among children under-five in the world. Risk of death can be decreased, if the illness were identified early, treated appropriately and prevention efforts. The study aimed to determine the influence of in-house environmental risk factor against the prevalence of pneumonia in children. The study used cross-sectional design with descriptive method which consisted of 2.408 samples of 80.329 households from Riskesdas 2007 data. Data were analyzed by univariate and bivariate of Chi-square to get the level of risk by odds ratio, as well as the significance of correlation between dependent and independent variables of the study. The results showed that significant correlation between the type of floor (OR = 1.209; CI 95%) and fuel type (OR = 1.683; CI 95%) with prevalence of pneumonia children under-five. Conclusion of the study is that the floor type and the fuel have significant correlation with the prevalence of pneumonia, while the crowding and the presence of household members whom smoke could be not described its correlation clearly.

POTENSI PENGINDUKSI APOPTOSIS SENYAWA NIKOTINIL DIBUTIL GLUTAMAT ESTER TERHADAP SEL KANKER T47D Chandra Risdian; Tjandrawati Tjandrawati; Muhamad Hanafi; Yulia Anita; AMJ Putra
Widyariset Vol 12, No 1 (2009): Widyariset
Publisher : Pusbindiklat - LIPI

Nicotinil Dibuthyl Glutamate Ester (NDBGE) is a synthetic compound that is an analog of antibiotic UK3A from mycelium of Streptomyces sp.517-02. This compound was estimated to have anticancer activity similar to UK-3A. The aim of this research was to know the NDBGEs apoptotic inducing potency to human breast cancer T47D in vitro. DMEM + 1% PS + 10% FBS was added to human breast cancer T47D cells until cell concentration reached 1-5x/ 05eells/ml. NDBGE then was diluted by DMSO until 100ppm concentration. Propidium iodide with 50pg/m1 concentration was added to the T47D cells. The analysis was conducted by flow cytometry method. The result was that the apoptosis percentage of the cells was 12,35%.

THE ECONOMICAL FEASIBILITY OF SOYBEAN FARMING WITH THE INTEGRATED CROP MANAGEMENT (ICM): CASE STUDY AT NIMBOKRANG DISTRICT JAYAPURA Pandu Laksono; Adnan Adnan
Widyariset Vol 14, No 2 (2011): Widyariset
Publisher : Pusbindiklat - LIPI

The objective of this research was to determine the economical feasibility of soybean farming with the Integrated Crop Management (ICM) approach. This research was conducted in April–December 2009 and took place in Nimbokrang District, Jayapura Regency, Papua Province. Integrated Crop Management components were the use of high yield seeds (Ijen, Burangrang, Tanggamus, Seulawah), perfect soil tillage, balanced fertilizer and spacing. The research involved two cooperative farmers which apply ICM method and one non-cooperator farmer who apply the farmers system, using Ijen variety that are already common planted by local farmers. The results showed that the variety of Ijen with ICM method obtained the highest yields 2.15 tonn/ha with B/C ratio was 1.47,whereas Burangrang yields was 1.89 tonn/ha with B/C ratio 1.24, Tanggamus yields was 1.68 tonn/ha with B/C ratio 1.04 and Seulawah yield was 1.28 tonn/ha with B/C ratio 0.64. All of the varieties cultivated by the ICM method were feasible except Seulawah. Soybean farming using Ijen, Burangrang and Tanggamus varieties were feasible to develop with MBCR value of Ijen is 2.47, Burangrang 2.24, and Tanggamus 2.04.

THE INFLUENCE OF SOCIAL STATUS OF WOMEN ON BIRTH INTERVAL IN INDONESIA Desy Nuri Fajarningtiyas
Widyariset Vol 15, No 1 (2012): Widyariset
Publisher : Pusbindiklat - LIPI

The median of birth interval in Indonesia is quite high which is 43,7 months. This figure can be classified asan ideal birth interval. However, the percentage point of the number of ideal birth interval only increases slowly(0,06 % annually). The findings of previous studies revealed that women’s status affected birth interval. Thus, thecurrent research aims to identify the influence of women’s status on birth interval in Indonesia context. The dataemployed in this study is taken from the 2007 Indonesia Demographic and Health Survey. The number of sampleused is 32.985 ever married women. The multinomial logistic regression is chosen for analysing the data since thedependent variables (birth interval) are categorical. The results of this study shows that educational level, wealthindex and the involvement of women in decision making related to the health services acquirement influences birthinterval.

THE EFFECT OF CHARGING CONDITION FOR CONDUCTED EMISSION VALUE OF INFORMATION TECHNOLOGY EQUIPMENT Agung Yanuar Wirapraja; Ika Prawesty Wulandari
Widyariset Vol 4, No 1 (2018): Widyariset
Publisher : Pusbindiklat - LIPI

Currently, IT devices, especially mobile phone and notebook, have become a staple for humans. These devices can’t be separated from human activities. Mobile phone or notebook using those are too often can lead people to conduct any charging process when that device is being used. In general, there are three conditions for any devices when the charging process is being performed, such as: off, standby, and normal use (music on). This research objective is to compare the result on conducted emis- sion testing when mobile phone and notebook at the plugging charge for the conditions: off, stand by, and normal use (music on). Testing method refers to CISPR 22 Standards at Clause Mains Terminal Disturbance Voltage. Testing result for mobile phone and notebook show that all of testing sample perform conducted emission value with quasi peak value meet the requirement of CISPR 22. The amount of 80% testing sample, perform the highest quasipeak margin value when the off condition of devices.

EVALUASI PETA PERCEPATAN GEMPA SUMATERA (SNI-1726-2002) TERHADAP PETA PERCEPATAN GEMPA MENGGUNAKAN SOFTWARE PSHA Fahmi Aldiamar
Widyariset Vol 12, No 1 (2009): Widyariset
Publisher : Pusbindiklat - LIPI

Evaluation on seismic hazard map in Sumatra bedrock was needed because the Indonesian seismic hazard map standard (SNI-1726-2002) was built using the 2D seismic source model and a lot of seismic activity around Sumatera occurred after the 8N1-1 7 26-2002 was published. Probabilistic Seismic Hazard (PSHA) software was developed by USGS in 2007 to gain bedrock acceleration value derivedf rom Probabilistic calculation on 3D seismic source using the Next Generation Attenuation (NGA). Therefore this software represented the newest theory to build seismic hazard map and it was used in this research to evaluate and validate the Indonesian standard, particularly Sumatra seismic hazard map. Several phases were done to gain the seismic hazard map, such as collecting and processing earthquake data, calculating seismic risk parameter, acceleration calculation using PSHA software and developing a seismic hazard map using ArcGis Software. Evaluation result indicated that SNI-1726-2002 seismic hazard map in Sumatera bedrock, particularly in region 3,4 and 5 was lower than seismic hazard map developed using PSHA software. The deviation was range between ± 0.05-0.20g.

SOCIETY’S WILLINGNESS TO PAY FOR ENVIRONMENTAL FRIENDLY WASTE MANAGEMENT IN DUSUN TOISAPU LANDFILL, AMBON DISTRICT Angela Ruban; Eka Intan Kumala Intan Kumala Putri; Meti Ekayan
Widyariset Vol 18, No 1 (2015): Widyariset
Publisher : Pusbindiklat - LIPI

Waste is a national problem in Indonesia. This is related to the old paradigm of waste management which is only collected, transported, and disposed to the landfill. The same problem occured in Dusun Toisapu, Ambon. Since it’s establishment in 2003, Dusun Toisapu landfill used open dumping and it’s caused the increased negative externalities of environmental quality for the people who lives nearby. Ambon district officer has a new integratedwaste management in 2012 but the implementation is not going well because there was no sorting of waste (organic and anorganic) on source of waste. The governments finacial limitation causes the waste management services not running properly. Based on the results of research in Baguala and Nusaniwe, most people are willing to pay higher retribution for better services in Dusun Toisapu landfill with four scenarios. The highest average WTP in Baguala is Rp24.250,00/family/month for biogas scenario and the lowest is Rp20.804,00/family/month for incineration scenario. In Nusaniwe, it is obtained the highest average WTP is p21.228,00/family/month for composting scenario and the lowest is Rp18.220,00/family/month for sanitary landfill scenario. Value of WTP from people can cover operational costs for implementing four waste management scenarios that offered.

SUPPORTING REGULATIONS TO IMPLEMENT PERFORMANCE BASED CONTRACT ON ROADS MANAGEMENT Hendra Hendrawan
Widyariset Vol 18, No 2 (2015): Widyariset
Publisher : Pusbindiklat - LIPI

Qualified Road infrastructure is needed to support development acceleration. To improve the quality of road infrastructure reforms needs to be carried out in the field of road management from planning, construction, operation to maintenance. One form of the reform is implementing performance based contract. This paper aims to identify related regulations and criterias those are needed to implement performance based contract optimally. Those regulations were analyzed descriptively and then examined for compliancewiththe performance based contractcriterias. The scope of the regulation are Laws, Goverment Regulation, and Presidential Regulation that related to the implementation of performance based contract. The study showed there has been policy relating to the application of performance based contract. However, these regulations do not meet the criterias necessary for the implementation of performance based contract optimally.

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.

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Contact Name
Andri Rahman

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

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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