http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Durairaj, P.,Jung, E.,Park, H.H.,Kim, B.G.,Yun, H. IPC Science and Technology Press ; Elsevier Scienc 2015 Enzyme and microbial technology Vol.70 No.-
FoCYP53A19, a novel cytochrome P450 capable of performing benzoate hydroxylation, was identified and characterized from the ascomycete Fusarium oxysporum f.sp. lycopersici. Comparative functional analysis of FoCYP53A19 with the heterologous and homologous cytochrome P450 reductases (CPR) such as Saccharomyces cerevisiae (ScCPR), Candida albicans (CaCPR) and F. oxysporum (FoCPR) revealed novel catalytic properties. The catalytic efficiency and substrate specificity of FoCYP53A19 were significantly influenced and altered by the source of the reductase employed. The yeast reconstitution system of FoCYP53A19 with ScCPR performed the hydroxylation of benzoic acid (BA) and demethylation of 3-methoxybenzoic acid (3-MBA); but when reconstituted with CaCPR, FoCYP53A19 performed only the essential hydroxylation of fungal benzoate catabolism. Remarkably, FoCYP53A19 with its homologous reductase FoCPR, not only demonstrated the improved conversion rates of BA and 3-MBA, but also exhibited activity toward the hydroxylation of 3-hydroxybenzoic acid. The electron transfer compatibility and the coupling efficiency between the homologous FoCYP-FoCPR system are significant and it favored enhanced monooxygenase activity with broader substrate specificity.
Durairaj, Kaliannan,Velmurugan, Palanivel,Park, Jung-Hee,Chang, Woo-Suk,Park, Yool-Jin,Senthilkumar, Palaninaicker,Choi, Kyung-Min,Lee, Jeong-Ho,Oh, Byung-Taek GUSTAV FISCHER VERLAG JENA GMBH 2018 MICROBIOLOGICAL RESEARCH Vol.206 No.-
<P><B>Abstract</B></P> <P> <I>Pseudomonas</I> and <I>Bacillus</I> species are attractive due to their potential bio-control application against plant bacterial pathogens<I>. Pseudomonas aeruginosa</I> strain D4 and <I>Bacillus stratosphericus</I> strain FW3 were isolated from mine tailings in South Korea. In these potent bacterial strains, we observed improved antagonistic activity against <I>Pseudomonas syringae</I> DC3000. These strains produced biocatalysts for plant growth promotion, and <I>in vivo</I> examination of <I>Solanum lycopersicum</I> included analysis of disease severity, ion leakage, chlorophyll content, and H<SUB>2</SUB>O<SUB>2</SUB> detection. In addition, regulation of the defense genes pathogen-related protein 1a (PR1a) and phenylalanine ammonia lyase (PAL) was compared with treated plants and untreated control plants. The results suggest that these two bacterial strains provide protection against plant pathogens via direct and indirect modes of action and could be used as a bio-control agent.</P>
Study on NOx reduction capacity of catalytic coated cordierite monolith
Rekha Durairaj,Neelakrishnan Subramanyan,Divakar Duraiswamy 한양대학교 세라믹연구소 2019 Journal of Ceramic Processing Research Vol.20 No.6
Legislation world-wide imposes stringent emission norms, particularly EURO V and beyond. In this regard, extensive research is being conducted for improving the existing filter design, material properties and developing alternative design, materials, testing procedures for more sensitive to reduce NOX values. Cordierite ceramics are having good chemical and electrical properties like high thermal resistance, low dielectric constant, low thermal expansion coefficient, and high chemical and mechanical stability, which makes it for many industrial applications like manufacturing of the thermal insulation materials, optoelectronic devices, plasma display panels, solar panels, catalytic convertors etc. In this work, a pair of cordierite monolith with catalyst coating to NOx storage and reduction was developed. The effectiveness of the catalysis was verified with engine exhaust gas analyser. The testing was carried out with diesel as fuel in a Kirloskar engine with Non-filter, NSR, and combined NSR-SCR system. The investigation was done for five trials with different emission parameters and analysed.
Thirumurugan Durairaj,Dhamodharan Duraisami,Thanigaivel Sundaram,Vadivalagan Chithravel,Vijayakumar Ramasamy,변헌수 한국화학공학회 2024 Korean Journal of Chemical Engineering Vol.41 No.4
Recent studies have emphasized the application of nanoscience and nanotechnology to disease prevention, diagnosis, and treatment. This study examined the use of marine actinobacteria in the synthesis of silver nanoparticles (AgNPs). UV–Vis spectrophotometry, Fourier infrared spectroscopy, X-ray diff raction, scanning electron microscopy, and energy dispersive X-ray spectroscopy were used to characterize the primary structure, crystalline nature, functional groups, shape, and elemental signal of the synthesized AgNPs. The mean particle diameter of the AgNPs was measured, and the size was found to be between 23 and 27 nm. The antibacterial activity of the AgNPs was evaluated; it showed enhanced inhibitory activity against Escherichia coli , Bacillus subtilis , and Klebsiella pneumoniae . At an AgNP concentration of 40 g/mL, the test pathogen growth was completely inhibited. The larvicidal property of the synthesized AgNPs showed enhanced activity against An. stephensi (LC5017.511 and LC9050.572), A. aegypti (LC50 22.481 and LC90 61.920), and Cx. quinquefasciatus (LC50 29.548 and LC90 73.123). By analyzing the phenotypic data, the 16S rRNA gene sequence, and the phylogenetic data, the probable isolate was also determined to be Streptomyces parvisporogenes KL3. The study results prove that biosynthesized AgNPs can be used as eff ective antibacterial and larvicidal agents in drug formulation.
Chandrasekaran S.,Durairaj S.,Padmavathi S. 대한전기학회 2021 Journal of Electrical Engineering & Technology Vol.16 No.2
Right now, research in the power sector has generally limited itself to issues, for example, the nature of power and its improvement, with much research, focused on the two. Power network operations are constrained by non-direct electronic electronics that disrupt power systems. Power system issues harmonics, ripples, electromagnetic induction (EMI), voltage sags, voltage swells, and regulation, harmonics, the speed of response of the system, and the time response of the system. The tasks of the existing system depend on the working of the fractional-order proportional-integral (FOPID) controller, which comprises a photovoltaic panel, buck–boost converter, seven-level multi-level inverter, three-phase induction motor, and FOPID controller. The proposed framework comprises a fuzzy logic controller (FLC); PV-fed seven-level multi-level inverter and buck–boost converter, with a three-phase induction motor giving the heap. The simulation model worked for both the current and proposed frameworks is by MATLAB Simulink, and the outcomes for both are analyzed and recorded. The examination shows that the proposed framework has a quicker speed of reaction, time reaction, and lower THD esteem than the current framework.