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Goswami Subrata,Das Shoumitra B.,Rath Prakash C.,Adak Totan,Parameswaran C.,Jambhulkar Nitiprasad N.,Govindharaj Guru-Pirasanna-Pandi,Gowda Gadratagi Basana,Patil Naveenkumar B.,Mohapatra Shyamranjan 한국응용곤충학회 2024 Journal of Asia-Pacific Entomology Vol.27 No.2
Insects harbour diverse range of microbes in the digestive tract. An investigation was carried out to isolate and characterize the culturable gut bacterial fauna of three stem borers attacking rice (Scirpophaga incertulus, Sesamia inferens and Chilo suppressalis) morphologically, biochemically and genetically (based on 16S rDNA sequences). Their ability to degrade two commonly used insecticides, i.e., chlorpyrifos and chlorantraniliprole was quantified in vitro through minimal media study using GC–MS and HPLC, respectively. There was a great variation in the gut bacterial composition of these three borers in spite of belonging to same guild and being collected from the same host (Varshadhan: CRLC-899) at the same time from ICAR-NRRI farm, Cuttack, India. Bacillus was prominent in S. incertulus and C. suppressalis whereas Stenotrophomonas was dominant in S. inferens. It is the first report of encountering B. pumilus, B. cereus and Acinetobacter calcoaceticus from the gut of S. incertulus and Paraclostridium from the gut of S. inferens. Chlorpyrifos and chlorantraniliprole was degraded to the tune of 44.87–92.02 % and 10.52 to 74.38 %, respectively. B. subtilis most efficiently degraded chlorpyrifos, while Klebsiella sp. and A. calcoaceticus were superior in degrading Chlorantraniliprole. The gut bacterial consortium of S. inferens was the most efficient in degrading the insecticides. The differential abilities of the gut bacterial isolates to degrade the insecticides provide insights for their possible involvement in xenobiotic detoxification in their host and further study on this aspect may improve management strategies of these pests. These insects can also serve as novel sources for profiling insecticide-degrading microbes for bioremediation programmes.
Goswami, Hit K.,Shrivastava, Nirhhay,Gopal, Shiv Kumar,Sharna, Sanjay,Chandorkar, Manoj,Lee, In-Hwan,Chang, Sung-Ik Korean Society of Medical Genetics 1997 대한의학유전학회지 Vol.1 No.1
A nine month old male child presenting degenerating right ulna (massive osteolysis) has been followed up for two years. The bone completely disappeared due to abscesses on the right forearm and without orthopedic or haematological complications. Repeated lymphocyte cultures showed somatic pairing (mostly chromosome pair 5), end to end association involving chromosome 14, 21, 21 and 16, and satellite enlargement in a high proportion of cells with an otherwise normal 46,XY karyotype. These observations are compared with 13 other types of orthopaedic patients, and we opine that cumulative picture of chromosomal aberrations appears to correspond with the present rare anomaly "Mono Ostolic Osteolysis" involving right ulna. None of the controls or any other orthopaedic anomaly studied hereunder exhibits this chromosomal picture.
Goswami Saheli,Bhaduri Gargi 한국마케팅과학회 2021 Journal of Global Fashion Marketing Vol.12 No.3
Perceived corporate hypocrisy, a perception of corporations claiming to have a virtuous character that they do not really possess, is a growing concern for US businesses. The purpose of this study was to investigate the impact of retail employees’ perceived corporate hypocrisy (PCH) related to corporations’ moral responsibility efforts on their work-related behaviors, namely turnover intentions, mediated by their lack of trust and poor attitude towards the corporation. An online self-reported survey was conducted using 520 adult US retail employees. The study results revealed that PCH positively impacted employee turnover intention, participants’ lack of trust in the corporation as well their less favorable attitude towards the same. Also, both lack of trust and less favorable attitude mediated the relation between PCH and turnover intention. The study provides implications for corporations and indicates that given employees are irreplaceable resources to the corporation and can act as creators of competitive advantages, it is essential that corporations take initiatives to align their moral values with those of their employees or risk losing them.
Morphology control and photovoltaic application of solvothermally synthesized PbS nanostructures
Goswami, S.K.,Oh, E. North-Holland 2014 Materials letters Vol.117 No.-
<P>PbS nanostructures are synthesized using solvothermal method. Here, EDTA is employed as a chelating agent and PEG-PPG-PEG polymer as a structure directing surfactant. The possible factors behind the formation of nanostructures of various morphologies are explained. Crystalline quality is improved when EDTA is employed in the growth. In the Raman spectra, overtones of the longitudinal optical (LO) phonon peaks are observed. In the I-V characteristics of the photovoltaic devices, both open circuit voltage and short circuit current were improved as compared to the earlier devices made by using a similar mechanical pressing method with PbS nanowires. (C) 2013 Elsevier B.V. All rights reserved,</P>
Goswami, Manibarsha,Ashley, Daniel C.,Baik, Mu-Hyun,Pohl, Nicola L. B. American Chemical Society 2016 Journal of organic chemistry Vol.81 No.14
<P>The mechanism of bismuth(V)-mediated thioglycoside activation was examined using reaction kinetics and quantum chemical reaction models. NMR experiments show an unusual nonlinear growth/decay curve for the glycosylation reaction. Further studies suggest an anomeric inversion of the beta-glycoside donor to the alpha-donor during its activation, even in the presence of a neighboring 2-position acetate. Interestingly, in situ anomerization was not observed in the activation of an alpha-glycoside donor, and this anomer also showed faster reaction times and higher product diastereoselectivites. Density functional theory calculations identify the structure of the promoter triphenyl bismuth ditriflate, [Ph3Bi(OTf)(2), 1], in solution and map out the energetics of its interactions with the two thioglycoside anomers. These calculations suggest that 1 must bind the thiopropyl arm to induce triflate loss. The computational analyses also show that, unlike most O-glycosides, the beta- and alpha-donor S-glycosides are similar in energy. One energetically reasonable anomerization pathway of the donors is an S(N)1-like mechanism promoted by forming a bismuth-sulfonium adduct with the Lewis acidic Bi(V) for the formation of an oxacarbenium intermediate. Finally, the computed energy compensations needed to form these alpha vs beta Bi adducts is a possible explanation for the differential reactivity of these donors.</P>
Goswami, Linee,Nath, Anil,Sutradhar, Sweety,Bhattacharya, Satya Sundar,Kalamdhad, Ajay,Vellingiri, Kowsalya,Kim, Ki-Hyun Elsevier 2017 Journal of environmental management Vol.200 No.-
<P>Utilization of different types of solid wastes through composting is important for environmental sustainability and restoring soil quality. Although drum composting is an efficient technology, the possibility of heavy metal contamination restricts its large-scale use. In this research, a field experiment was conducted to evaluate the impact of water hyacinth drum compost (DC) and traditional vermicompost (VC) on soil quality and crop growth in an agro-ecosystem cultivated intensively with tomato and cabbage as test crops. A substantial improvement in soil health was observed with respect to nutrient availability, physical stability, and microbial diversity due to the application of drum compost and traditional vermicompost. Moreover, soil organic carbon was enriched through increased humic and fulvic acid carbon. Interestingly, heavy metal contamination was less significant in vermicompost-treated soils than in those receiving the other treatments. The use of VC and DC in combination with recommended chemical fertilization effectively stimulated crop growth, yield, product quality, and storage longevity for both tomato and cabbage. (C) 2017 Elsevier Ltd. All rights reserved.</P>
Fast algorithm for the High Efficiency Video Coding (HEVC) encoder using texture analysis
Goswami, K.,Lee, J.H.,Kim, B.G. Elsevier science 2016 Information sciences Vol.364 No.-
<P>High Efficiency Video Coding (HEVC) is the newest video coding standard for improvement in video data compression. However, the important challenge of the encoding complexity of HEVC is addressed in a new way. For a natural video sequence, a large number of coding blocks are generally skipped in nature. These need not be transmitted and can be generated in the decoder side using reference pictures. An early skip detection technique for HEVC is proposed based on identification of motionless and homogeneous texture-based regions in a video sequence. Entropy is considered as a feature for analysis of coding unit (CU) texture. An entropy difference between coding units is calculated for identification of motionless and homogeneous regions in a video sequence. Complex texture-based regions are generally encoded as asymmetric motion partitioning (AMP) processing units. An early non-AMP detection technique is also proposed for non-skipped coding blocks using the entropy value of a coding unit. The proposed technique achieved a 40% encoding time reduction, compared with the conventional HEVC encoder, with a negligible degradation in video quality. (C) 2016 Elsevier Inc. All rights reserved.</P>
Goswami, Nilakshi,Patir, Bijoy The Kangwon-Kyungki Mathematical Society 2022 한국수학논문집 Vol.30 No.2
In this paper, we prove some fixed-point theorems in partially ordered fuzzy metric spaces for (𝜙, 𝜓, 𝛽)-Geraghty contraction type mappings which are generalization of mappings with Geraghty contraction type condition. Application of the derived results are shown in proving the existence of unique solution to some boundary value problems.