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RISS 인기검색어
- 검색키워드
- 저자 : B. Varshini (검색결과 2 건)
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Comparative Analysis of Latex Plants by GC-MS using Methanol Extraction
J. Varshini premakumari,M. Job Gopinath,B. Narmadha 사단법인 한국질량분석학회 2023 Mass spectrometry letters Vol.14 No.1
Plants are able to produce a large number of diverse bioactive compounds. Solvent extraction is used for isolation of plant metabolites. The extract yield for plant metabolite extraction strongly depends on the nature of solvent. A review showed the methanol can yield more bioactive compounds. Drying of the sample material is also important for the extraction of plant material. The present study was carried out to analyze the phytocomponents of 5 different latex producing plants. The plants like Calotropis gigantea, Carica papaya, Nerium oleander, Ficus benghalensis and Plumeria alba leaves and latex. The GC-MS analysis of the metabolites revealed phytocomponents. Calotropis gigantea leaves showed 14 compounds and latex produced 5 compounds out of this 4,4,6A,6B,8A,11,11,14B-Octamethyl-1,4,4A,5,6,6A,6B,7,8,8A,9,10,11,12,12A,14,14A,14B-Octadeca- hydro-2 and 2R- Acetoxymethyl-1,3,3-trimethyl-4T-(3-Methyl-2-Buten-1-Yl)-1T-Cyclohexanol compound was present in both latex and leaf extraction. Beta. -carotene compound was present in both latex and leaf of Carica papaya. It was observed that Ficus benghalensis contained 2R-Acetoxymethyl-1,3,3-trimethyl-4T-(3-Methyl-2-Buten-1-Yl)-1T-Cyclohexanol was same in latex and leaf extraction.
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P. Sangeetha,Harika Madireddy,B. Varshini,R. B. Yokesh 한국강구조학회 2024 International Journal of Steel Structures Vol.24 No.2
This paper aims to study the experimental and analytical behaviour of cold-formed steel (CFS) T-joint members with or without external ring stiff eners under combined axial compression and bending. The parameters varied in the study include the type of T-joints (with and without ring stiff eners), spacing of the stiff eners (100 mm and 200 mm from the central axis of the T-Joint), and thickness of the ring stiff eners (4 mm and 6 mm). The load–defl ection and load-strain behaviour were studied by measuring the overall defl ection of the T-joints and strain using dial gauges and strain indicators, respectively. The load-carrying capacity of the T-joints with external ring stiff eners was compared, and the results of a numerical investigation showed good agreement. An extensive parametric study was carried out for diff erent geometric parameters of the ring stiff ener, chord, and brace member using the FE model to obtain the ultimate strength of the stiff ened T-joints, and strength was also compared and obtained using the published equation. From the results of this investigation, it was found that the T-joints with external ring stiff eners can resist more strength and deformation when compared to the T-joints without external ring stiff eners.
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