http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
, Ravi,Manju Sharma,Sharma, Suman 한국유전학회 1994 Genes & Genomics Vol.16 No.4
Six Indian geographical populations of D. bipectinata were analysed electrophoretically for allozymic variation at nine loci as well as for ethanol tolerance potential. Allelic frequency changes at Adh, Odh and Est-5 loci correlated significantly with increase in latitude. On the basis of F_(ST) values, Adh, Odh, Mdh and α-Gpdh loci depicted modest amounts of genetic differentiation. Thus, the occurrence of significant genotypic as well as allelic frequency heterogeneity, genic differentiation and clinal variation at polymorphic loci suggest evidence of natural selection maintaining such genic differentiation in D. bipectinata populations from the Indian sub-continent. The Indian populations of D. bipectinata revealed genetic differentiation in term of ethanol indices such as LT_(50) hrs(72 to 96 hrs), adult ethanol threshold concentration(2.5 to 4.0'%), LC_(50) thanol concentration(2.7 to 4.2%). The parallel occurrence of latitudinal variation at Adh locus as well as ethanol tolerance in Indian geographical populations of D. bipectinata could be maintained by balancing natural selection varying spatially along the north south axis of the Indian sub-continent.
Computational Design of Bifurcation
Ravi Koirala,Sailesh Chitrakar,Hari Prasad Neopane,Balendra Chhetri,Bhola Thapa 한국유체기계학회 2017 International journal of fluid machinery and syste Vol.10 No.1
Bifurcation refers to wye division of penstock to divide the flow symmetrically or unsymmetrically into two units of turbine for maintaining economical, technical and geological substrates. Particularly, water shows irrelevant behavior when there is a sudden change in flow direction, which results into the transition of the static and dynamic behavior of the flow. Hence, special care and design considerations are required both hydraulically and structurally. The transition induced losses and extra stresses are major features to be examined. The research on design and analysis of bifurcation is one of the oldest topics related to R&D of hydro-mechanical components for hydropower plants. As far as the earlier approaches are concerned, the hydraulic designs were performed based on graphical data sheet, head loss considerations and the mechanical analysis through simplified beam approach. In this paper, the multi prospect approach for design of Bifurcation, incorporating the modern day’s tools and technology is identified. The hydraulic design of bifurcation is a major function of dynamic characteristics of the flow, which is performed with CFD analysis for minimum losses and better hydraulic performances. Additionally, for the mechanical design, a simplified conventional design method as pre-estimation and Finite Element Method for a relevant result projections were used.
Pythagorean Theorem Before and After Pythagoras
Ravi P. Agarwal 장전수학회 2020 Advanced Studies in Contemporary Mathematics Vol.30 No.3
Following the footpaths of Lakshmikantham, et. al. [15], and succeeding by Agarwal et. al. [3], in this article a sincere effort has been made to report the origin of the Pythagorean Theorem. Out of about 500 known different proofs of this theorem, we select five which have historical importance. We also discuss several generalizations of this theorem, and list some antique enduring problems. We genuinely hope students and teachers of mathematics will appreciate this article.
Ravi Kant,Keshav Kumar Saini,Ravindra Kumar Upadhyay,Yogender Singh,Y. Veera Manohara Reddy,Shishu Pal Singh,M. Abdul Kareem,K. R. Dasegowda,H. Prabhavati,Rakesh Kumar,박종필,Lalita S. Kumar 한국생물공학회 2023 Biotechnology and Bioprocess Engineering Vol.28 No.5
To explore novel and potent compounds with anticancer activity, two series of 1H-1,2,3-triazole tethered dibenzosuberane conjugates (5a-i and 5j-n) were synthesized using a linear and convergent approach. The synthesized novel compounds were screened for their in vitro antiproliferative activity against HepG2 cell lines using the MTT assay to explore their binding interactions with the 5EQG protein. IC50 values revealed that the most active combination against HepG2 cell lines was triazole tethered with an ortho chloro-substituted aryl ring (5g) (IC50: 99.64 μg/mL). The other compounds in the series exhibited comparable cytotoxic activities against HepG2 cell lines. The results were substantiated by molecular docking studies. The majority of the compounds demonstrated high binding affinity for the active site of the targeted protein. In addition, in silico drug-likeness prediction by the ADMET method has been explored with these compounds. All synthesized novel derivatives were characterized by mass spectrometry, infrared spectroscopy, 1H-nuclear magnetic resonance (NMR) spectroscopy, and 13C-NMR spectroscopy.
Ravi Ranjan Rai,Yash Shah,Siddharth Shah,Nigil Sadanandan Palliyil,Samir Dalvie 대한척추신경외과학회 2019 Neurospine Vol.16 No.4
Objective: To study the association of facet joint angulation and joint tropism with degenerative spondylolisthesis (DS) through a comparison with a matched control group. Methods: This radiographic study was carried out in 2 groups of 45 patients each. Group A contained patients with single-level DS, while group B (control) contained non-DS patients with similar age and degeneration who underwent surgery for disc prolapse or lumbar stenosis. DS was diagnosed based on translation of ≥3 mm on standing lateral radiography. Axial magnetic resonance imaging from L3 to S1 was utilized to assess the angulation of facet joints in relation to the coronal plane; a difference of ≥8° was considered to indicate tropism. Results: Among 45 patients with DS, 15 were males and 30 females. Their mean age was 62.2 years. Facet tropism was identified in 20 of 45 patients at the level of DS, 12 patients at a level proximal to DS, and 15 patients at a level distal to DS. Facet tropism was found in 7 of the 45 patients in group B. At L3–4, facet tropism was observed in 13 patients (28.88%) in group A and 2 (4.44%) in group B. At L4–5, tropism was observed in 19 patients (42.22%) in group A and 5 (11.11%) in group B. At L5–S1, tropism was seen in 17 patients (37.77%) in group A and 2 (4.44%) in group B. Group A showed a significantly higher prevalence of multilevel facet tropism and tropism at levels adjacent to the DS level. A higher average angulation of facet joints was observed in the DS group, but the difference was not statistically significant at all levels. Conclusion: The present study documented a statistically significant relationship between facet tropism and DS. A higher prevalence of facet tropism was also found in DS patients at non-DS levels, which is a novel observation. This finding supports the argument that facet tropism is a pre-existing morphological variation contributing to the development of DS, not a result of secondary remodelling.
Estimating Normalized Attention of Viewers on Account of Relative Visual Saliency of Faces (NRVS)
Ravi kant kumar,Jogendra Garain,Goutam Sanyal,Dakshina Ranjan Kisku 보안공학연구지원센터 2015 International Journal of Software Engineering and Vol.9 No.7
Humans psychological and behavioral understanding often lead to make natural decision which accurately identifies and remembers the faces which are highly appreciated or criticized by themselves in comparing to the normal viewed faces, in terms of beauty, ugliness or unique appearance. It happens due to human psychology of being biased towards the salient face in the process of face recognition and identification. This paper attempts a novel method to measure, how our attention is more restricted towards some particular faces in the crowd. This restricted attention is strongly guided by the relative visual saliency of these faces. In this paper, normalized relative visual saliency (NVRS) of the faces is evaluated using their intensity values modulated with respective spatial distance. Experiment has been carried out on test image dataset via bottom up approach. The experimental results are found to be encouraging and accuracy has also been measured exhibiting efficacy of the proposed approach.