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Mayur Ashok Ubale,Vitthal Dnyandeo Salkar 한국화학공학회 2017 Korean Journal of Chemical Engineering Vol.34 No.4
We investigated the feasibility of applying a continuous textile wastewater (TWW) treatment, which was accomplished by using electrocoagulation (EC) unit with zigzag horizontal flow across a series of mono-polar aluminum plate baffles. The effects of operating parameters such as current density (20-80 A/m2) and detention time (5- 40 min) on turbidity, color, chemical oxygen demand (COD), total suspended solids (TSS) and total dissolved solids (TDS) removal were studied. The optimum conditions were determined as 60 A/m2 and 20min by monitoring zeta potential (ζ) of effluent. At the optimum conditions, removal efficiencies for turbidity (97.63%), color (87.87%), COD (93.3%), TSS (94.02%), and TDS (52.13%) were observed. Further, addition of 4mg/L of NaCl dose in the TWW modified conductivity suitably, thereby reducing electrical energy consumption per cubic meter of waste water and specific electrical energy consumption (SEEC) from 13.33 to 2.67kWh/m3, and 23.84 to 4.77kWh/kg Al, respectively. Comparing the EC with conventional coagulation process, EC showed better pollutant removal efficiency.
Structurally Enhanced Correlation Tracking
( Mayur Rajaram Parate ),( Kishor M. Bhurchandi ) 한국인터넷정보학회 2017 KSII Transactions on Internet and Information Syst Vol.11 No.10
In visual object tracking, Correlation Filter-based Tracking (CFT) systems have arouse recently to be the most accurate and efficient methods. The CFT's circularly shifts the larger search window to find most likely position of the target. The need of larger search window to cover both background and object make an algorithm sensitive to the background and the target occlusions. Further, the use of fixed-sized windows for training makes them incapable to handle scale variations during tracking. To address these problems, we propose two layer target representation in which both global and local appearances of the target is considered. Multiple local patches in the local layer provide robustness to the background changes and the target occlusion. The target representation is enhanced by employing additional reversed RGB channels to prevent the loss of black objects in background during tracking. The final target position is obtained by the adaptive weighted average of confidence maps from global and local layers. Furthermore, the target scale variation in tracking is handled by the statistical model, which is governed by adaptive constraints to ensure reliability and accuracy in scale estimation. The proposed structural enhancement is tested on VTBv1.0 benchmark for its accuracy and robustness.
Additions to the family Commelinaceae in flora of India
Mayur D. Nandikar,Rajaram V. Gurav 국립중앙과학관 2019 Journal of Asia-Pacific Biodiversity Vol.12 No.2
Commelina imberbis Ehrenb. ex Hassk., an African species, and Murdannia crocea subsp. crocea (Griff.) Faden, a Southeast Asian species, have been reported for the first time from India with their typification, descriptions, illustrations, color photographs, and notes on allied species.
Kurade, Mayur B.,Waghmode, Tatoba R.,Xiong, Jiu-Qiang,Govindwar, Sanjay P.,Jeon, Byong-Hun Elsevier 2019 Journal of cleaner production Vol.213 No.-
<P><B>Abstract</B></P> <P>Textile dyes are xenobiotic contaminants which pose a potential risk on the ecosystem upon their disposal to the water bodies. This study evaluated the efficiencies of different immobilization matrices for its utilization in a reactor with continuous mode operation for decolorization of textile effluent. An effective consortium of bacteria (<I>Brevibacillus laterosporus</I>) and yeast (<I>Galactomyces geotrichum</I>) were immobilized in different support matrices including calcium alginate, polyvinyl alcohol, stainless steel sponge and polyurethane foam to investigate the decolorization of a model azo dye, Remazol red and textile industry effluent. The microbial consortia immobilized in stainless steel sponge and polyurethane foam exhibited 100% decolorization of 50 mg L<SUP>−1</SUP> Remazol red in 11 and 15 h, respectively; however, calcium alginate and polyvinyl alcohol required considerably more time (20 and 24 h, respectively) for complete decolorization. Among all the matrices, The calcium alginate, stainless steel sponge and polyurethane foam showed >95% decolorization of textile industry effluent within 48 h. The calcium alginate and polyvinyl alcohol exhibited stable performance of decolorization with its repeated use for 5 cycles with >76% decolorization. An upflow fixed bed reactor (total volume- 215 mL) packed with the immobilized cells of consortium onto stainless steel sponge attained ∼90% decolorization of textile industry effluent in continuous operation at 10 mL h<SUP>−1</SUP>. The decolorization efficiency of the reactor was well maintained (>90%) when the reactor was used repeatedly for three cycles. The overall results indicated that immobilized mixed consortium cells can be considered as an effective tool for its potential application in removal of xenobiotic textile dyes from the textile industry wastewater with >90% of decolorization efficiency.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Effective microbial consortium was immobilized in different support matrices. </LI> <LI> SS-sponge immobilized cells showed 100% decolorization of Remazol red in 11 h. </LI> <LI> Calcium alginate, polyvinyl alcohol showed stable decolorization of textile effluent. </LI> <LI> The upflow fixed bed reactor can be used for continuous decolorization of effluent. </LI> </UL> </P>
Kurade, Mayur B.,Saha, Shouvik,Kim, Jung Rae,Roh, Hyun-Seog,Jeon, Byong-Hun Elsevier Applied Science 2020 Bioresource Technology Vol. No.
<P><B>Abstract</B></P> <P>The methane productivity and long chain fatty acids (LCFAs) degradation capability of unacclimatized seed sludge (USS) and acclimatized seed sludge (ASS) at different substrate ratios of fats oil and grease (FOG) and mixed sewage sludge were investigated in this study. Biogas produced in ASS in initial phase of anaerobic digestion had higher methane content (65–76%) than that in USS (26–73%). The degradation of major LCFAs in the ASS was 22–80%, 33–191%, and 7–64% higher for the substrate ratios of 100:10, 100:20, and 100:30, respectively, as compared to the LCFAs’ degradation in USS. Microbial acclimatization increased the population of Firmicutes (40%), Bacteroidetes (32%), Synergistetes (10%), and Euryarchaeota (8%) in ASS, which supported the faster rate of LCFAs degradation for its later conversion to methane. The significant abundance of <I>Syntrophomonas</I> and <I>Methanosarcina</I> genera in ASS supported faster generation rate of methane in an obligatory syntrophic relationship.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Methane productivity of unacclimatized and acclimatized sludge were investigated. </LI> <LI> Biogas produced in ASS showed higher methane content (65–76%) than in USS (26–73%). </LI> <LI> The ASS exhibited greater degradation of LCFAs than in USS. </LI> <LI> Firmicutes, Bacteroidetes, Synergistetes and Euryarchaeota were highly increased. </LI> <LI> Abundance of <I>Syntrophomonas</I> and <I>Methanosarcina</I> in ASS improved methane generation. </LI> </UL> </P>
Kurade, Mayur B.,Saha, Shouvik,Salama, El-Sayed,Patil, Swapnil M.,Govindwar, Sanjay P.,Jeon, Byong-Hun Elsevier Applied Science 2019 Bioresource Technology Vol. No.
<P><B>Abstract</B></P> <P>Fats, oil and grease (FOG) are energy-dense wastes that substantially increase biomethane recovery. Shifts in the microbial community during anaerobic co-digestion of FOG was assessed to understand relationships between substrate digestion and microbial adaptations. Excessive addition of FOG inhibited the methanogenic activity during initial phase; however, it enhanced the ultimate methane production by 217% compared to the control. The dominance of Proteobacteria was decreased with a simultaneous increase in Firmicutes, Bacteriodetes, Synergistetes and Euryarchaeota during the co-digestion. A significant increase in <I>Syntrophomonas</I> (0.18–11%), <I>Sporanaerobacter</I> (0.14–6%) and <I>Propionispira</I> (0.02–19%) was observed during co-digestion, which substantiated their importance in acetogenesis. Among methanogenic Archaea, the dominance of <I>Methanosaeta</I> (94%) at the beginning of co-digestion was gradually replaced by <I>Methanosarcina</I> (0.52–95%)<I>.</I> The absence/relatively low abundance of syntrophic acetate oxidizers and hydrogenotrophic methanogens, and dominance of acetoclastic methanogens suggested that methane generation during co-digestion of FOG was predominantly conducted through acetoclastic pathway led by <I>Methanosarcina</I>.</P> <P><B>Highlights</B></P> <P> <UL> <LI> The addition of fats, oil and grease enhanced ultimate methane production by 217%. </LI> <LI> Firmicutes, Bacteriodetes, Synergistetes and Euryarchaeota were greatly increased. </LI> <LI> Dominance of <I>Methanosaeta</I> was replaced by <I>Methanosarcina</I> at the end of digestion. </LI> <LI> Methane was predominantly generated through acetoclastic pathway by <I>Methanosarcina</I>. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>
Characterization of transcription factor genes related to cold tolerance in Brassica napus
Sharma, Mayur Mukut Murlidhar,Ramekar, Rahul Vasudeo,Park, Nam-Il,Choi, Ik-Young,Choi, Seon-Kang,Park, Kyong-Cheul Korea Genome Organization 2021 Genomics & informatics Vol.19 No.4
Brassica napus is the third most important oilseed crop in the world; however, in Korea, it is greatly affected by cold stress, limiting seed growth and production. Plants have developed specific stress responses that are generally divided into three categories: cold-stress signaling, transcriptional/post-transcriptional regulation, and stress-response mechanisms. Large numbers of functional and regulatory proteins are involved in these processes when triggered by cold stress. Here, our objective was to investigate the different genetic factors involved in the cold-stress responses of B. napus. Consequently, we treated the Korean B. napus cultivar Naehan at the 4-week stage in cold chambers under different conditions, and RNA and cDNA were obtained. An in silico analysis included 80 cold-responsive genes downloaded from the National Center for Biotechnology Information (NCBI) database. Expression levels were assessed by reverse transcription polymerase chain reaction, and 14 cold-triggered genes were identified under cold-stress conditions. The most significant genes encoded zinc-finger proteins (33.7%), followed by MYB transcription factors (7.5%). In the future, we will select genes appropriate for improving the cold tolerance of B. napus.
강우규,Mayur Devare,김정윤 한국미생물학회 2017 The journal of microbiology Vol.55 No.2
Silent information regulator 2 (Sir2), which is the founding member of the sirtuin family of proteins, is a pro-longevity factor for replicative lifespan (RLS) in Saccharomyces cerevisiae. Sir2 is required for transcriptional silencing at mating type loci, telomeres, and rDNA loci. Sir2 also represses transcription of highly expressed growth-related genes, such as PMA1 and some ribosomal protein genes. Although the Sir2 paralogues Hst1, Hst2, Hst3, and Hst4 occur in S. cerevisiae, none of them could replace the transcriptional regulation of PMA1 by Sir2 in the wild type. In this study, we demonstrate that Hst1, the closest Sir2 paralogue, deacetylates the acetylated lysine 16 of histone H4 (H4K16Ac) and represses PMA1 transcription in the sir2Δ pde2Δ mutant. We further show that Hst1 plays a role in extending the RLS of the sir2Δ pde2Δ mutant. Collectively, our results suggest that Hst1 can substitute for Sir2 by deacetylating H4K16Ac only in the sir2Δ pde2Δ.