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Biswas, Tethi,Chatterjee, Debasmita,Barman, Sinchini,Chakraborty, Amrita,Halder, Nabanita,Banerjee, Srimoyee,Chaudhuri, Shaon Ray The Korean Society for Microbiology and Biotechnol 2019 한국미생물·생명공학회지 Vol.47 No.4
Analysis of bacterial communities based on their 16S rDNA sequences revealed the predominance of Proteobacteria (Aeromonas sp., Acinetobacter sp. and Thaueraamino aromatica sp.) and uncultured bacterium in activated sludge from the effluent treatment plant (ETP) of Mother Dairy, Calcutta (India). Each isolate was used for bioremediation of dairy wastewater with simultaneous conversion of nitrogenous pollutants into ammonia. A consortium developed using seven of these isolates and three Bacillus strains from different environmental origins could reduce 93% nitrate with simultaneous production of ammonia (626 ㎍/100 ml) within 20 h in non-aerated, immobilized conditions as compared to 82% nitrate reduction producing 2.4 ㎍/100 ml ammonia in 96 h with extensive aeration in a conventional ETP. The treated ammonia-rich effluent could be used instead of freshwater and fertilizer during cultivation of mung bean with 1.6-fold increase in grain yield. The ETP with the surrounding agricultural land makes this process a zero liquid discharge technology for using the biofertilizer generated. In addition, the process requires minimal energy supporting sustained environmental health. This method is thus proposed as an alternative approach for small-scale dairy ETPs.
De Aloke Kumar,Bhattacharyya Sanjoy Kumar,Chakraborty Aparna,Samanta Amrita 대한산부인과학회 2019 Obstetrics & Gynecology Science Vol.62 No.5
ObjectiveTo determine whether vaginal application of 40 mg isosorbide-5-mononitrate (ISMN) has a comparable cervicalripening efficacy to and lesser side effects than 400 μg misoprostol in women scheduled for the first trimester inducedabortion using a manual vacuum aspirator (MVA). MethodsWe conducted a prospective randomized open-label study in 70 women at 6–12 weeks of pregnancy at the R G KarMedical College and Hospital, Kolkata, India, over a period of two years from 2015 to 2017. Forty milligrams of ISMNand 400 μg misoprostol were vaginally applied for cervical priming. The primary outcome measure was the cervicalresponse assessed by the passage of the appropriate and largest sized MVA cannula through the internal os withoutresistance, at the beginning of the procedure. ResultsThe base line cervical dilatation was found to be significantly higher in the misoprostol group than in the ISMN group(7.65±1.38 vs. 6.9±1.26 mm; P=0.025, 95% confidence interval, −1.4046 to −0.953). However, when the women weresub-analyzed based on parity, there was no statistically significant difference in the same parameters among themultigravid women. The need for further cervical dilatation was significantly higher in the ISMN group when theprimigravid women were compared, although the multigravid women responded favorably to ISMN. ConclusionIn the primigravid women, misoprostol appears to exert a higher efficacy as a cervical ripening agent in contrast toISMN. However, ISMN can be used in multigravid women for the same purpose as in this group, misoprostol did notshow any significant improvement in efficacy over ISMN.
Tethi Biswas,Debasmita Chatterjee,Sinchini Barman,Sinchini Barman,Amrita Chakraborty,Nabanita Halder,Srimoyee Banerjee,Shaon Ray Chaudhuri 한국미생물·생명공학회 2019 한국미생물·생명공학회지 Vol.47 No.4
Analysis of bacterial communities based on their 16S rDNA sequences revealed the predominance of Proteobacteria (Aeromonas sp., Acinetobacter sp. and Thaueraamino aromatica sp.) and uncultured bacterium in activated sludge from the effluent treatment plant (ETP) of Mother Dairy, Calcutta (India). Each isolate was used for bioremediation of dairy wastewater with simultaneous conversion of nitrogenous pollutants into ammonia. A consortium developed using seven of these isolates and three Bacillus strains from different environmental origins could reduce 93% nitrate with simultaneous production of ammonia (626 μg/100 ml) within 20 h in non-aerated, immobilized conditions as compared to 82% nitrate reduction producing 2.4 μg/100 ml ammonia in 96 h with extensive aeration in a conventional ETP. The treated ammonia- rich effluent could be used instead of freshwater and fertilizer during cultivation of mung bean with 1.6-fold increase in grain yield. The ETP with the surrounding agricultural land makes this process a zero liquid discharge technology for using the biofertilizer generated. In addition, the process requires minimal energy supporting sustained environmental health. This method is thus proposed as an alternative approach for small-scale dairy ETPs.
Bashir Ahmad Dar,Meena Sharma,Baldev Singh,Arup Chakraborty,Parduman R. Sharma,Varsha Shrivastava,Amrita Bhowmik,Dushyant Vyas,Prince Bhatti 한국공업화학회 2013 Journal of Industrial and Engineering Chemistry Vol.19 No.3
An easy to prepare aluminium pillared interlayered clay (PILC) has been developed as a stable, recyclable and heterogeneous catalyst to promote the one-pot three component synthesis of a-aminophosphonates under solvent-free conditions using grindstone chemistry. Utilization of mild reaction conditions, clean conversion and greater selectivity under grinding conditions along with effortless separation, and purification of reaction products make this process extra attractive.