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Dr. S. Panneerselvam 한국마음학회 2014 한국마음학회지 Vol.1 No.1
The three important turns in philosophy in the twentieth century: linguistic (Wittgenstein), hermeneutical (Heidegger, Gadamer) and cognitive (Fodor, Churchland, Dennett).The interrelation among the above three turns and the significance of cognitive turn in philosophy is discussed in recent debates both in Indian and Western philosophical traditions. Thus consciousness reemerged as one of the problems of scientific (A.K. Mukhopadhyay, B.V. Sreekantan, Rajesh Kasturirangan) as well as philosophical community (R. Balasubramanian, Bina Gupta). Four types of responses to consciousness: D-I-M-E (Deflation, Irreducibility, Magic and Eliminativism).
Cutting tool performance analysis of P/M alloy steel under turning of copper material
T. Panneerselvam,T. K. Kandavel,T. K. Chaitanya,K. S. Tarun 대한기계학회 2021 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.35 No.9
Automation in machining processes requires high strength new cutting tool to co-up with high speed, feed and high-temperature working conditions. The present work is aimed to analyze the performance of newly fabricated powder metallurgy (P/M) alloy steel, Fe-0.5 %C-2 %Cu-2 %Mo-2 %Ti as a cutting tool under turning of copper material using a conventional lathe. Taguchi’s experimental design matrix is used to conduct the experiment with cutting speed, depth of cut and feed rate as working parameters. The tool performance is assessed by evaluating the surface quality of the work material. Signal-to-noise ratio employs to optimize the working parameters. The surface roughness of copper work material machined by the P/M tool is a minimum at 43.175 m/min, 0.1 mm and 0.43 mm/rev of cutting speed, depth of cut and feed rate, respectively. Finally, the experimental analysis reveals that the P/M cutting tool will exhibit a comparable performance against the conventional HSS tool.
Endoscopic vacuum therapy for treatment of spontaneous and iatrogenic upper gastrointestinal defects
Kavea Panneerselvam,Jake S. Jacob,Ronald E. Samuel,Andy Tau,Gyanprakash A. Ketwaroo,Wasif M. Abidi,Robert J. Sealock 대한소화기내시경학회 2023 Clinical Endoscopy Vol.56 No.6
Background/Aims: Endoscopic vacuum therapy (EVT) can heal a variety of defects within the gastrointestinal (GI) tract via applyingnegative pressure, which reduces the defect size, aspirates the infected fluid, and promotes granulation tissue. Here we present our ex-perience with EVT as it relates to both spontaneous and iatrogenic upper GI tract perforations, leaks, and fistulas. Methods: This retrospective study was conducted at four large hospital centers. All patients who underwent EVT between June 2018and March 2021 were included. Data on multiple variables were collected, including demographics, defect size and location, numberand intervals of EVT exchanges, technical success, and hospital length of stay. Student t-test and the chi-squared test were used to ana-lyze the data. Results: Twenty patients underwent EVT. The most common defect cause was spontaneous esophageal perforation (50%). The mostcommon defect location was the distal esophagus (55%). The success rate was 80%. Seven patients were treated with EVT as the prima-ry closure method. The mean number of exchanges was five with a mean interval of 4.3 days between exchanges. The mean length ofhospital stay was 55.8 days. Conclusions: EVT is a safe and effective initial management option for esophageal leaks and perforations.