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Yuyun Fitriana,Desi Apriani Teresa Tampubolon,Radix Suharjo,Puji Lestari,I Gede Swibawa 한국식물병리학회 2022 Plant Pathology Journal Vol.38 No.5
This study was performed to reveal phenotypic characters and identity of symbiont bacteria of Nasutitermes as well as investigate their potential as antagonist of plant pathogenic fungi. Isolation of the symbiont bacteria was carried out from inside the heads and the bodies of soldier and worker termite which were collected from 3 locations of nests. Identification was performed using phenotypic test and sequence of 16S ribosomal DNA (16S rDNA). Antagonistic capability was investigated in the laboratory against 3 phytopathogenic fungi i.e., Phytophthora capsici, Ganoderma boninense, and Rigidoporus microporus. Totally, 39 bacterial isolates were obtained from inside the heads and the bodies of Nasutitermes. All the isolates showed capability to inhibit growth of P. capsici, however, 34 isolates showed capability to inhibit growth of G. boninense and 32 isolates showed capability to inhibit growth of R. microporus. Two bacterial strains (IK3.1P and 1B1.2P) which showed the highest percentage of inhibition were further identified based on their sequence of 16S rDNA. The result showed that 1K3.1P strain was placed in the group of type strain and reference strains of Lysinibacillus fusiformis meanwhile 1B1.2P strain was grouped within type strain and reference strains Paenibacillus alvei. The result of this study supply valuable information on the role of symbiont bacteria of Nasutitermes, which may support the development of the control method of the three above-mentioned phytopathogenic fungi.
인도네시아 치카푼둥강의 수질 모니터링을 위한 수질 분석 능력배양
이미영,Fitriana Finna,정영균,강석태 적정기술학회 2018 적정기술학회지(Journal of Appropriate Technology) Vol.4 No.2
The purpose of this study was to promote analytical laboratory on water quality for sustainable management of water environment in Bandung, Indonesia. The discussions were made during the installation of proper analytical instruments and training of analytical procedures of water quality, which were customized to the filed by the technical manual and curriculum. To secure database of water in Indonesia, sampling and analysis of Cikapundung river were performed with trained students. The modeling based on the data from filed analysis exhibited that the illegal discharge from private houses should be regulated to reduce the contamination of Cikapundung river. As the conclusion, capacity build-up for the water quality monitoring was successfully achieved, and trained researchers are able to carry an analytical project supported by Indonesian government. 본 연구에서는 인도네시아 반둥지역에서 수질오염문제해결을 위한 수질관련 기초자료를 확보하기 위하여 현지상황에적합한 환경 분석시설을 설치하고 교육하는 과정의 단계와, 각 단계에서의 고려사항에 대하여 토의하였다. 구축된 시설과 기술교육을 통해 양성된 전문인력과 함께 인도네시아 수질분석 자료의 확보를 위해 치카푼둥강 유역 수질을 분석하였고, 치카푼둥강의 오염을 막기 위해서는 주거지역에서 배출되는 오염을 제재해야 함을 도출하였다. 본 연구를통해 현지 협력기관의 지속적인 수질 모니터링 역량을 강화하였고, 현지 정부지원의 분석사업을 수행하고 있다.
Kim, Min-Sik,Fitriana, Hana Nur,Kim, Tae Wan,Kang, Sung Gyun,Jeon, Sang Goo,Chung, Soo Hyun,Park, Gwon Woo,Na, Jeong-Geol Elsevier 2017 INTERNATIONAL JOURNAL OF HYDROGEN ENERGY - Vol.42 No.45
<P><B>Abstract</B></P> <P>Here, we developed a pressurized bioreactor system that increase carbon monoxide (CO) transfer efficiency in order to enhance the hydrogen productivity in the microbial water gas shift reaction by <I>Thermococcus onnurineus</I> NA1. The effects of CO pressure on the hydrogen production rate, CO consumption rate and the cell growth were investigated using small scale stainless steel bottles at various CO partial pressures. It was found that CO solubility increased by applying pressure can affect hydrogen production positively as long as the increased toxicity of CO is endurable to cells. The hydrogen productivity increased to some extent with CO pressure, but decreased drastically at the pressure higher than 4 bar. On the other hand, the effect of pressure itself on the cell's activity was not as significant as that of CO solubility increase. In the experiments at various system pressures with identical CO partial pressure of 1 bar, more than 80% of the cell activity remains even at total pressure of 10 bar. Also, it was important to determine the appropriate time to increase pressure for preventing excess CO in the reactor. Based on these results, a fermentation strategy for the pressurized system was designed and applied to a 5 L bioreactor with the continuous supply of the gas containing 60% CO. When the pressure was introduced to the bioreactor up to 4 bar at CO limitation condition, the unprecedented high productivity (360 mmol L<SUP>−1</SUP> h<SUP>−1</SUP>) could be obtained.</P> <P><B>Highlights</B></P> <P> <UL> <LI> CO gas solubility increased by pressurizing can be beneficial to H<SUB>2</SUB> production. </LI> <LI> The impact of pressure per se was marginal. </LI> <LI> CO toxicity impacts were reduced by applying pressure at mass transfer limitation condition. </LI> <LI> When the pressure was introduced to the bioreactor, the unprecedented high productivity could be obtained. </LI> </UL> </P>
The Capacity Building for the Water Quality Monitoring of Cikapundung River in Bandung, Indonesia
Mi-Young Lee(이미영),Fitriana Finna,Youngkun Chung(정영균),Seoktae Kang(강석태) 적정기술학회 2018 적정기술학회지(Journal of Appropriate Technology) Vol.4 No.2
본 연구에서는 인도네시아 반둥지역에서 수질오염문제해결을 위한 수질관련 기초자료를 확보하기 위하여 현지상황에 적합한 환경 분석시설을 설치하고 교육하는 과정의 단계와, 각 단계에서의 고려사항에 대하여 토의하였다. 구축된 시설과 기술교육을 통해 양성된 전문인력과 함께 인도네시아 수질분석 자료의 확보를 위해 치카푼둥강 유역 수질을 분석하였고, 치카푼둥강의 오염을 막기 위해서는 주거지역에서 배출되는 오염을 제재해야 함을 도출하였다. 본 연구를 통해 현지 협력기관의 지속적인 수질 모니터링 역량을 강화하였고, 현지 정부지원의 분석사업을 수행하고 있다. The purpose of this study was to promote analytical laboratory on water quality for sustainable management of water environment in Bandung, Indonesia. The discussions were made during the installation of proper analytical instruments and training of analytical procedures of water quality, which were customized to the filed by the technical manual and curriculum. To secure database of water in Indonesia, sampling and analysis of Cikapundung river were performed with trained students. The modeling based on the data from filed analysis exhibited that the illegal discharge from private houses should be regulated to reduce the contamination of Cikapundung river. As the conclusion, capacity build-up for the water quality monitoring was successfully achieved, and trained researchers are able to carry an analytical project supported by Indonesian government.