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Centroidal mean labeling of graphs-II
R. SAMPATHKUMAR,K. M. Nagaraja,G. Narasimhan,M. H. Ambika 장전수학회 2020 Proceedings of the Jangjeon mathematical society Vol.23 No.2
In this paper the Centroidal mean labeling of graphs such as triangu- lar snake Tn K1, double triangular snake Dn(Tn) K1, TLn K1, the graph obtained by attaching pendent edges to both sides of each vertex of a path Pn; attaching paths of lengths 0; 1; 2; 3; : : : ; n - 1 on both sides of each vertex of Pn; D2(Pn); Middle graph of path Pn; Total graph of path Pn; Splitting graph of path Pn and Duplicating each vertex by an edge in path Pn are discussed.
Anti-hepatotoxic activity of Fruit pulp of Momordica dioica Roxb. (Cucurbitaceae)
Ilango, K.,Maharajan, G.,Narasimhan, S. Kyung Hee Oriental Medicine Research Center 2004 Oriental pharmacy and experimental medicine Vol.4 No.1
The Hexane Extract (HE) and Ethyl Acetate Soluble Fraction of the Methanolic Extract (EASFME) of the fruit pulp of Momordica dioica Roxb. (Cucurbitaceae) was evaluated for its anti-hepatotoxic activity in rats. Acute hepatotoxicity was induced by administering paracetamol (2 g/kg, p.o.) for 3 days. The extracts, at a dose of 400 mg/kg (p.o.) administered for 7 days exhibited a significant therapeutic effect by lowering Serum Glutamate Oxaloacetate Transaminase (SGOT), Serum Glutamate Pyruvate Transaminase (SGPT), Serum Alkaline Phosphatase (ALP) and Serum bilirubin and increasing the serum protein levels. These biochemical observations were supplemented by histopathological examination of the liver sections. The activity of extract was also comparable to the standard drug Silymarin, which is a well-known natural anti-hepatotoxic drug.
Kim Kyongsong,Siddharth Narasimhan Aiyer,Vignesh Gunasekaran,Latha Mani,Sri Vijay Anand K. S.,Shanmuganathan Rajasekaran,Ajoy Prasad Shetty 대한척추외과학회 2021 Asian Spine Journal Vol.15 No.3
Study Design: Prospective case series. Purpose: This study aimed to investigate the impact of education, financial income, occupation, and patient counseling on the timing of enrolment in a spinal cord injury (SCI) rehabilitation program. Overview of Literature: A rehabilitation program following SCI is essential to improve functional outcomes. Socioeconomic factors can affect the timing of enrolment to a rehabilitation program. Literature on the effects of socioeconomic factors among patients with SCI in the Indian scenario is limited. Methods: A prospective, consecutive analysis of patients with SCI was performed with 1-year follow-up. Assessment of the timing of enrolment to a rehabilitation program was performed using the modified Kuppuswamy socioeconomic scores (MKSS). Patients admitted to the SCI unit (group A), underwent intensive individual, group, and family counseling sessions to encourage early enrolment into a rehabilitation program. Patients presenting directly for rehabilitation (group B) were analyzed for comparison. Results: A total of 153 patients were recruited. Group A was composed of 122 patients who started the rehabilitation program after a mean of 28 days, compared with a mean of 149 days for 31 patients in group B. In group A, 104 patients (85%; mean MKSS, 14.02) and 18 patients (15%; mean MKSS, 15.61) enrolled for rehabilitation <6 weeks and ≥6 weeks, respectively. In group B, 12 patients (39%; mean MKSS, 13.69) and 19 patients (61%; mean MKSS, 12.10) enrolled for rehabilitation <6 weeks and ≥6 weeks, respectively. The total MKSS and scores for education, income, and occupation did not show a significant difference between the two both groups (p>0.05). Conclusions: Early patient counseling in the acute care unit helps in the early enrolment of patients with poor socioeconomic demographic profile to a rehabilitation program.
Antiulcer Activity of Sida acuta Burm.
P. Malairajan,Geetha Gopalakrishnan,S. Narasimhan,K. Jessi Kala Veni 한국생약학회 2006 Natural Product Sciences Vol.12 No.3
ethanol extract of Sida acuta Burm. (ALSA) whole plant was studied for its anti-ulcer activityagainst aspirin plus pylorous ligation induced gastric ulcer, HCl-ethanol induced ulcer, and water immersion stressinduced ulcer (WISIU) in rats. We found that ALSA at a dose of 300 mg/kg, (orally) markedly decrease theindex (53.69%). It has not reduced the total acidity significantly and no significant change in pH. It also showed55.14% gastro protective activity, whereas standard drug sucralfate showed 94.85%. WISIU showed protectionindex 24.4%, whereas standard drug omeprazole (OMEZ) showed protection index 100%. Keywordsantiulcer, Sida acuta, aspirin plus pylorous ligation ulceration, HCl-ethanol ulceration, waterimmersion stress ulcer
Javed S. Ibrahim ,Rohit T. Mathew,M. J. N. V. Prasad,K. Narasimhan 대한금속·재료학회 2022 METALS AND MATERIALS International Vol.28 No.10
Owing to high heat flux ability and good mechanical strength, copper has been used for micro-electro-mechanical systems(MEMS) components with dimensions in micrometers processed by electrochemical methods. In the present study, finegrained copper foils of different thicknesses and grain sizes produced by pulsed electrodeposition under different controlledcurrent densities were used to investigate the effect of total number of grains across thickness of foil on its tensile responseand formability. For a comparative study, commercially available rolled Cu foils were also used. Vacuum annealing wasemployed to obtain a wide range of fully recrystallized grain sizes within same thickness of the foils. Detailed microstructuralcharacterization was carried out using scanning electron microscope attached with electron backscattered diffraction detector. The foils were subjected to uniaxial tensile testing and formability testing using a miniaturized Nakazima test setup. Asanticipated, finer the grain size higher was the yield strength. However, the strength of copper reduced with decreasing thetotal number of grains across thickness of the foil. The electrodeposited Cu foil exhibited relatively higher strength levelsbut reduced tensile ductility along with decreased strain hardening ability compared to the fully recrystallized Cu foils havingsimilar grain sizes. Furthermore, the number of grains across thickness and the prior history of foils played significantrole on the shape and trend in variation of the forming limit curve of Cu. An α-fiber (< 110 >) texture evolved in Cu duringdeformation and its volume fraction strengthened under biaxial deformation conditions.
Javed S. Ibrahim,M. J. N. V. Prasad,Partha Sarkar,K. Narasimhan 대한금속·재료학회 2024 METALS AND MATERIALS International Vol.30 No.2
Ultra-low carbon (ULC) steels, containing a carbon content ~ 0.055 wt%, have been used in several applications in the formof thin foils. However, there are limited studies on the effects of foil thickness (t) to grain size (d) ratio and foil condition onthe tensile response and formability of thin ULC steel foils. In the present work, the tensile and forming behaviours of ULCsteel foils of thickness about 400 μm were evaluated in both annealed and prestrained (by cold reduction to 2–7%) conditionsas a function of t/d ratio and followed by detailed texture evolution analysis. Vacuum annealing was used to achievevarying t/d ratios in the specimens. Additionally, thin ULC steel foils of 100 μm thickness in annealed condition were alsoused for examining the thickness effect. Microstructural analysis was performed using the electron backscattered diffractiontechnique. Microformability was assessed by a miniaturised Nakazima test setup with specimen geometries designed toproduce three different strain paths. The annealed foils displayed a typical yield-point phenomenon, but the total yield-pointelongation decreased with decreasing thickness and grain size. The foils exhibited typical Hall–Petch strengthening, coldwork hardening, and forming limit curves; however, there were substantial reductions in both tensile strength and ductility,and consequently, the forming strains, with decreasing the t/d ratio. The tensile response and formability of the foils wereadversely affected by both thinning and prestraining. The texture studies revealed the formation of a γ-fibre i.e., < 111 >||normaldirection, and its intensity varied significantly with the t/d ratio and mode of strain path.