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Imamura F.,Tohoku University | Muhari A.,Tohoku University | Mas E.,Tohoku University | Pradono M.H.,The Agency for the Assessment and Application of Technology | And 2 more authors.
Journal of Disaster Research | Year: 2012

This paper describes the results of a comprehensive analysis for tsunami disaster mitigation in Padang City, Indonesia. Assessment consists of several steps, starting from the construction of tsunami hazard maps based on the most probable earthquake scenario in the future. Results are then analyzed to determine the impact on residential population along potential evacuation routes. Next, from the standpoint of hazards, we move to the analysis of human's vulnerability during evacuation. The term "vulnerability" is associated with available evacuation time. Here, we conducted a static evacuation model using the GIS platform and a dynamic approach using multiagent paradigm. Results of evacuationmodeling suggest that some residents may not have enough time to leave the tsunami inundation area before the first wave comes. We therefore propose using relatively high buildings as vertical evacuation sites. One of potential candidates that survived from a devastated earthquake with 7.6 Mw in 2009 is selected to be further analyzed its antiseismic deficiencies based on design ground motion obtained from micro-tremor analysis and synthesized recorded wave in Padang. As a result, even though the building underwent some damage, the frame structure was able to withstand the shaking and keep the building from collapsing.

Wibowo T.Y.,Universiti Sains Malaysia | Wibowo T.Y.,The Agency for the Assessment and Application of Technology | Abdullah A.Z.,Universiti Sains Malaysia | Zakaria R.,Universiti Sains Malaysia
Applied Clay Science | Year: 2010

Montmorillonite was modified with cetyl trimethylammonium bromide (CTAB) and tetra-n-butylammonium bromide (TBAB) to catalyze the production of glycerol monolaurate. The reaction was conducted at 130°C for up to 8h. With TBAB montmorillonite, a higher glycerol monolaurate selectivity of about 73% was obtained at a lauric acid conversion of about 80%. © 2010 Elsevier B.V.

Darmansyah,Lampung University | Saputra H.,The Agency for the Assessment and Application of Technology | Simparmin B.G.,Lampung University | Ardiana L.,Lampung University
ARPN Journal of Engineering and Applied Sciences | Year: 2016

The present study reports a green synthesis method for ordered MCM-41 materials from coal fly ash at room temperature during 24 h of reaction with Si/Al ratio 40, 50, and 60 using cetyltrimethylammonium bromide (CTAB) as template. The surfactant was removed by calcination at 550°C for 4 hours with heating rate 1°C/minute. The material properties of calcined MCM-41 was characterized by XRD, SEM, and BET. The MCM-41 material was applied as an adsorbent in the tapioca wastewater treatment. The XRD analysis results showed that the Si/Al ratio influence the crystallinity of product. The crystallinity of MCM-41 was increased by increasing Si/Al mole ratio. The obtained MCM-41 adsorption capacity for tapioca wastewater treatment was 15.92 mg/g. © 2006-2016 Asian Research Publishing Network (ARPN).

Fahri S.,Eijkman Institute for Molecular Biology | Fahri S.,Diponegoro University | Yohan B.,Eijkman Institute for Molecular Biology | Trimarsanto H.,Eijkman Institute for Molecular Biology | And 7 more authors.
PLoS Neglected Tropical Diseases | Year: 2013

Dengue disease is currently a major health problem in Indonesia and affects all provinces in the country, including Semarang Municipality, Central Java province. While dengue is endemic in this region, only limited data on the disease epidemiology is available. To understand the dynamics of dengue in Semarang, we conducted clinical, virological, and demographical surveillance of dengue in Semarang and its surrounding regions in 2012. Dengue cases were detected in both urban and rural areas located in various geographical features, including the coastal and highland areas. During an eight months' study, a total of 120 febrile patients were recruited, of which 66 were serologically confirmed for dengue infection using IgG/IgM ELISA and/or NS1 tests. The cases occurred both in dry and wet seasons. Majority of patients were under 10 years old. Most patients were diagnosed as dengue hemorrhagic fever, followed by dengue shock syndrome and dengue fever. Serotyping was performed in 31 patients, and we observed the co-circulation of all four dengue virus (DENV) serotypes. When the serotypes were correlated with the severity of the disease, no direct correlation was observed. Phylogenetic analysis of DENV based on Envelope gene sequence revealed the circulation of DENV-2 Cosmopolitan genotype and DENV-3 Genotype I. A striking finding was observed for DENV-1, in which we found the co-circulation of Genotype I with an old Genotype II. The Genotype II was represented by a virus strain that has a very slow mutation rate and is very closely related to the DENV strain from Thailand, isolated in 1964 and never reported in other countries in the last three decades. Moreover, this virus was discovered in a cool highland area with an elevation of 1,001 meters above the sea level. The discovery of this old DENV strain may suggest the silent circulation of old virus strains in Indonesia. © 2013 Fahri et al.

The Agency For The Assessment And Application Of Technology and Bridgestone | Date: 2012-06-08

An object of the present invention is to provide a method for efficiently producing polyploids in para rubber trees that are extremely useful for breeding new varieties. The method of the present invention is characterized by carrying out colchicine treatment on para rubber tree (

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