1,726,290 research outputs found
Performance investigation of PID controller in trajectory control of two-link robotic manipulator in medical robots
No full textRobot-assisted surgical procedures have gained much coverage in recent years and favored over manually conducted operations. The medical robots are comprised of manipulators arm that is the multi-degree of freedom positioning devices with a highly non-linear nature to perform various surgical tasks. Due to non-linear effects, robots offer a severe challenge to the control system. Therefore, the control techniques are required for controlling the robots that should be fast enough to accommodate the rapid changes in the system parameters. In this article, the Proportional-Integral-Derivative (PID) controller’s performance has been investigated in trajectory control of the Two-Link Robotic Manipulator (TLRM) for reliable functioning of these robots. Tracking error and Control input factors have been used to investigate the PID controller’s robustness in trajectory control of ‘TLRM.’ Euler’s-lagrange approach has been used for dynamic analysis of ‘TLRM’. This work has been accomplished in the MATLAB®/ Simulink environment.Kuldeep Jayaswal, D. K. Palwalia & Sandeep Kumar (2021) Performance investigation of PID controller in trajectory control of two-link robotic manipulator in medical robots, Journal of Interdisciplinary Mathematics, 24:2, 467-478, DOI: 10.1080/09720502.2021.189344
Figure 2 in Socio-economic factors threatening the survival of Ganges River Dolphin Platanista gangetica gangetica in the upper Ganges River, India
No full textFigure 2. Perception of fishermen about dolphin distribution in the Upper Ganges River.Published as part of Bashir, Tawqir, Khan, Afifullah & Behera, Sandeep Kumar, 2010, Socio-economic factors threatening the survival of Ganges River Dolphin Platanista gangetica gangetica in the upper Ganges River, India, pp. 1087-1091 in Journal of Threatened Taxa 2 (8) on page 1089, DOI: 10.11609/JoTT.o2333.1087-91, http://zenodo.org/record/498666
Investigating Generalized Strategy for Single-Image Satellite Super-Resolution Using Deep Learning
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Night-time Satellite and Aerial Image Denoising with Online Complex Noise Modeling and Deep Learning
Full text linkGetting to the bottom of a beneficial bacterium
No full textGrowing up in a remote village in India gave Dr Sandeep Kumar a first-hand understanding of the significant impact that farming can have on a society. Even the small-scale farms of his tiny hometown, where families might each have one or two cows in their backyard, made a big impression on the young Sandeep and fostered a desire to learn more about the very building blocks of agriculture
Systematic status of the rare Himalayan wolf snake Lycodon mackinnoni Wall 1906 (Serpentes: Colubridae)
No full textNawani, Swati, Deepak, V., Gautam, Kumudani Bala, Gupta, Sandeep Kumar, Boruah, Bitupan, Das, Abhijit (2021): Systematic status of the rare Himalayan wolf snake Lycodon mackinnoni Wall 1906 (Serpentes: Colubridae). Zootaxa 4966 (3): 305-320, DOI: https://doi.org/10.11646/zootaxa.4966.3.
sj-docx-1-pie-10.1177_09544089231159209 - Supplemental material for Predictive modeling of tool wear in rotary tool micro-ultrasonic machining
No full textSupplemental material, sj-docx-1-pie-10.1177_09544089231159209 for Predictive modeling of tool wear in rotary tool micro-ultrasonic machining by Sandeep Kumar, Akshay Dvivedi, Tanmay Tiwari and Maneesh Tewari in Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering</p
sj-docx-2-pie-10.1177_09544089231159209 - Supplemental material for Predictive modeling of tool wear in rotary tool micro-ultrasonic machining
No full textSupplemental material, sj-docx-2-pie-10.1177_09544089231159209 for Predictive modeling of tool wear in rotary tool micro-ultrasonic machining by Sandeep Kumar, Akshay Dvivedi, Tanmay Tiwari and Maneesh Tewari in Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering</p
Nitric Oxide as a Determinant of Human Longevity and Health Span
No full textThe master molecular regulators and mechanisms determining longevity and health span include nitric oxide (NO) and superoxide anion radicals (SOR). L-arginine, the NO synthase (NOS) substrate, can restore a healthy ratio between the dangerous SOR and the protective NO radical to promote healthy aging. Antioxidant supplementation orchestrates protection against oxidative stress and damage—L-arginine and antioxidants such as vitamin C increase NO production and bioavailability. Uncoupling of NO generation with the appearance of SOR can be induced by asymmetric dimethylarginine (ADMA). L-arginine can displace ADMA from the site of NO formation if sufficient amounts of the amino acid are available. Antioxidants such as ascorbic acids can scavenge SOR and increase the bioavailability of NO. The topics of this review are the complex interactions of antioxidant agents with L-arginine, which determine NO bioactivity and protection against age-related degeneration
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