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315 results on '"Varshney, Vaibhav"'

7. Saddle-Node Bifurcation of Periodic Orbit Route to Hidden Attractors in Nonlinear Dynamical Systems

Author

Kumarasamy, Suresh, Banerjee, Malay, Varshney, Vaibhav, Shrimali, Manish Dev, Kuznetsov, Nikolay V., and Prasad, Awadhesh

Subjects
Nonlinear Sciences - Chaotic Dynamics
Abstract

Hidden attractors are present in many nonlinear dynamical systems and are not associated with equilibria, making them difficult to locate. Recent studies have demonstrated methods of locating hidden attractors, but the route to these attractors is still not fully understood. In this letter, we present the route to hidden attractors in systems with stable equilibrium points and in systems without any equilibrium points. We show that hidden attractors emerge as a result of the saddle-node bifurcation of stable and unstable periodic orbits. Real-time hardware experiments were performed to demonstrate the existence of hidden attractors in these systems. Despite the difficulties in identifying the suitable initial conditions from the appropriate basin of attraction, we performed experiments to detect hidden attractors in nonlinear electronic circuits. Our results provide new insights into the generation of hidden attractors in nonlinear dynamical systems.

Published
2023

8. Practice Patterns and Survival in Patients with Resected Pancreatic Ductal Adenocarcinomas (PDAC) — Results from the Multicentre Indian Pancreatic & Periampullary Adenocarcinoma Project (MIPPAP) Study

Author

Chaudhari, Vikram, Ramaswamy, Anant, Srinivas, Sujay, Agarwal, Ajit, Seshadri, Ramakrishnan Ayloor, Talwar, Vineet, Bhargava, Prabhat, Goel, Shaifali, Kayal, Smita, Rebala, Pradeep, Prajapati, Bharat, Parikh, Devendra, Kothari, Jagdish, Ch, Ramesh M., Kadamapuzha, Jacob Mathew, Kapoor, Deeksha, Chaudhary, Adarsh, Goel, Varun, Singh, Shivendra, Ghosh, Joydeep, Lavingia, Viraj, Gupta, Amit, Sekar, Anbarasan, Misra, Sanjeev, Vishnoi, Jeewan Ram, Soni, Subhash, Varshney, Vaibhav Kumar, Bairwa, Sandeep, Bhandare, Manish, Shrikhande, Shailesh V., and Ostwal, Vikas

Published
2023
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10. Short-term outcomes of enhanced recovery after surgery protocol in minimally invasive oesophagectomy: A prospective study

Author

Sreesanth, Kelu, Soni, Subhash, Varshney, Vaibhav, Puranik, Ashok, and Bhatia, Pradeep

Subjects
Medical research, Medicine, Experimental, Health
Abstract

Byline: Kelu. Sreesanth, Subhash. Soni, Vaibhav. Varshney, Ashok. Puranik, Pradeep. Bhatia Background: Although fast-track treatment pathways are well established in colorectal surgeries, their role in oesophageal resections has not been [...]

Published
2024

12. Adjuvant therapy may improve overall survival in high-risk periampullary adenocarcinomas patients – A match-pair analysis from a multi-institutional cohort study (The MIPPAP study)

Author

Ramaswamy, Anant, Chaudhari, Vikram, Srinivas, Sujay, Bhargava, Prabhat, Kannan, Sadhana, Agarwal, Ajit, Seshadri, Ramakrishnan A., Talwar, Vineet, Goel, Shaifali, Goel, Varun, Singh, Shivendra, Kayal, Smita, Rebala, Pradeep, Rao, G.V., Prajapati, Bharat, Parikh, Devendra, Kothari, Jagdish, Kadamapuzha, Jacob M., Ramesh, Hariharan, Kapoor, Deeksha, Chaudhary, Adarsh, Gupta, Amit, Sekar, Anbarasan, Misra, Sanjeev, Vishnoi, Jeewan R., Soni, Subhash, Varshney, Vaibhav K., Bairwa, Sandeep K., Ghosh, Joydeep, Lavingia, Viraj, Bhandare, Manish, Shrikhande, Shailesh V., and Ostwal, Vikas

Published
2024
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16. Exploring the cost-effectiveness of high versus low perioperative fraction of inspired oxygen in the prevention of surgical site infections among abdominal surgery patients in three low- and middle-income countries

Author

Biccard, Bruce M., Smith, Denton, Peters, Shrikant, Boutall, Adam, Wilson, Graeme, Coetzee, Ettienne, Flint, Margot, Gumede, Simphiwe, Rayamajhi, Shreya, Bannister, Sharon, Daniel, Nonkululo, Fourtounas, Maria, Moore, Rachel, Sentholang, Nnosa, Osayomwanbo, Osaheni, Ifeanyi kene, Aghadi, Yakubu, Saidu Yusuf, Chukwu, Amos, Tolani, Musliu, Adinoyi, Yakubu Momohsani, Aliyu, Abdulrahman, Salahu, Dalhat, Isa kabir, Salisu, Ibrahim, Adigun, Tinuola, Adenekan, Anthony, Williams, Emmanuel, Bhatia, Pradeep Kumar, Chaudhary, Ramkaran, Kothari, Nikhil, Misra, Sanjeev, Pareek, Puneet, Poonia, Dharma Ram, Rathod, Kirti Kumar, Rodha, Mahaveer Singh, Sharma, Naveen, Sharma, Nivedita, Chandra Soni, Subhash, Varshney, Vaibhav Kumar, Vishnoi, Jeewan Ram, Balija, Satya Shree, Goyal, Anuj, Hudda, Farhanul, Joshva, Manoji, Seenivasagam, Rajkumar Kottayasamy, Shajahan, Shafiq, Sharma, Sameer, Singh, Sunil Kumar, Talwar, Praveen, Tripathi, Debendra Kumar, Bhatt, Daniel, Swati, Dhiman, Jyoti, George, Christina, Ghosh, Dhruva N., Goyal, Sunita, Hans, Priyanka, Haque, Parvez D., Jain, Deepak, Kaur, Harsharan, Kumar, Karan, Mahajan, Amit, Michael, Vishal, Rajappa, Reuben, Rajkumar, Arti, Suroy, Atul, Thind, Ravinder Singh, Veetil, Sreejith K., Aggarwal, Alisha Manisha, Dhamija, Parth, Garry, Gurleen Kaur, Gupta, Himani, Jakhar, Ruchi, Kumar, Ashwani, Kumar, Kshitij, Kumar, Parmod, Singh, Gurtaj, Chowdhury, Sona, Desai, Neha, Goswami, Jyotsna, Mathai, Sonia, and Patro, Viplab

Published
2023
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28. Role of UPOs in Characterizing the Hidden Attractors: A Comparison with Self-Excited Attractors.

Author

Bhindwar, Medha, Varshney, Vaibhav, Kumarasamy, Suresh, Shrimali, Manish Dev, and Prasad, Awadhesh

Subjects
*PHASE space, *ORBITS (Astronomy), *SELF-induced vibration, *ATTRACTORS (Mathematics)
Abstract

In this paper, we detect Unstable Periodic Orbits (UPOs) of both self-excited and hidden attractors using the Damped Newton–Raphson–Mees algorithm. This study answers one of the long-standing questions about the size of a hidden attractor. We observe that the UPOs of the self-excited attractor are spread in a thick region within the phase space at varying distances from the fixed point, whereas the UPOs of hidden attractors are confined to a thin layer. This reveals details concerning the size of a hidden attractor. We demonstrate this for a hidden attractor without a fixed point and for a hidden attractor with a single stable fixed point. To compare the results with self-excited attractors, we have taken Lorenz and Rössler attractor as examples. [ABSTRACT FROM AUTHOR]

Published
2024
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35. Erratum to ‘Exploring the cost-effectiveness of high versus low perioperative fraction of inspired oxygen in the prevention of surgical site infections among abdominal surgery patients in three low- and middle-income countries’ [BJA Open 7 (2023) 100207]

Author

Biccard, Bruce M., Smith, Denton, Peters, Shrikant, Boutall, Adam, Wilson, Graeme, Coetzee, Ettienne, Flint, Margot, Gumede, Simphiwe, Rayamajhi, Shreya, Bannister, Sharon, Daniel, Nonkululo, Fourtouna, Maria, Moore, Rachel, Sentholang, Nnosa, Osayomwanbo, Osaheni, Ifeanyi kene, Aghadi, Yakubu, Saidu Yusuf, Chukwu, Amos, Tolani, Musliu, Adinoyi, Yakubu Momohsani, Aliyu, Abdulrahman, Salahu, Dalhat, Isa kabir, Salisu, Ibrahim, Adigun, Tinuola, Adenekan, Anthony, Williams, Emmanuel, Bhatia, Pradeep Kumar, Chaudhary, Ramkaran, Kothari, Nikhil, Misra, Sanjeev, Pareek, Puneet, Poonia, Dharma Ram, Rathod, Kirti Kumar, Rodha, Mahaveer Singh, Sharma, Naveen, Sharma, Nivedita, Chandra Soni, Subhash, Varshney, Vaibhav Kumar, Vishnoi, Jeewan Ram, Balija, Satya Shree, Goyal, Anuj, Hudda, Farhanul, Joshva, Manoji, Seenivasagam, Rajkumar Kottayasamy, Shajahan, Shafiq, Sharma, Sameer, Singh, Sunil Kumar, Talwar, Praveen, Tripathi, Debendra Kumar, Bhatt, Daniel, Swati, Dhiman, Jyoti, George, Christina, Ghosh, Dhruva N., Goyal, Sunita, Hans, Priyanka, Haque, Parvez D., Jain, Deepak, Kaur, Harsharan, Kumar, Karan, Mahajan, Amit, Michael, Vishal, Rajappa, Reuben, Rajkumar, Arti, Suroy, Atul, Thind, Ravinder Singh, Veetil, Sreejith K., Aggarwal, Alisha Manisha, Dhamija, Parth, Garry, Gurleen Kaur, Gupta, Himani, Jakhar, Ruchi, Kumar, Ashwani, Kumar, Kshitij, Kumar, Parmod, Singh, Gurtaj, Chowdhury, Sona, Desai, Neha, Goswami, Jyotsna, Mathai, Sonia, Patro, Viplab, Kachapila, Mwayi, Monahan, Mark, Ademuyiwa, Adesoji O., Glasbey, James, Morton, Dion G., Pearse, Rupert, Roberts, Tracy E., and Oppong, Raymond

Published
2024
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39. Left hepatectomy for hepatic hydatid cyst with intra-biliary rupture: Better to be radical.

Author

Nayar, Raghav, Varshney, Vaibhav Kumar, Hussain, Sabir, Yadav, Taruna, and Puranik, Ashok

Subjects
CYST rupture, HEPATECTOMY, HEPATIC echinococcosis, ECHINOCOCCOSIS, BILE ducts, SYMPTOMS
Abstract

Echinococcal liver cysts are predominantly located in the right lobe of the liver and are mostly asymptomatic. A frank intra-biliary rupture (IBR) of hydatid cyst is uncommon, having variable clinical presentation and treatment options. We present a case of a 60-year-old male patient who presented with pain in the upper abdomen associated with vomiting but without jaundice. On investigations, he was diagnosed to have a left lobe hepatic hydatid cyst (HHC) with IBR for which left hepatectomy with bile duct exploration was performed. It highlights the benign nature of the disease for which seldom major hepatectomies have to be performed. [ABSTRACT FROM AUTHOR]

Published
2023
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40. Jejunal mucinous adenocarcinoma: Unusual presentation of a rare pathology.

Author

Suman, Sunita, Varshney, Vaibhav Kumar, Varshney, Bharti, Bharti, Jyotsna Naresh, and Yadav, Taruna

Subjects
MUCINOUS adenocarcinoma, PATHOLOGY, DELAYED diagnosis, PROGNOSIS, ADJUVANT chemotherapy, GASTROINTESTINAL tumors
Abstract

Mucinous adenocarcinoma of jejunum is a rare tumor of the gastrointestinal tract. Patients usually present after fifth decade of their life with non-specific symptoms. Delayed diagnosis is commonplace and often the reason for advanced disease and poor prognosis. These tumors may masquerade as other common malignancies, with a conclusive diagnosis only after the final histopathological examination. We present a case of jejunal mucinous adenocarcinoma, disguised as cecal malignancy, in an old female patient, managed with radical resection and adjuvant chemotherapy. The report reiterates that the mucinous variant of jejunal adenocarcinoma is a rare pathology with an unusual advanced presentation. [ABSTRACT FROM AUTHOR]

Published
2023
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43. Post-oesophagectomy chylothorax: An unusual cause of postoperative stridor

Author

Syal, Rashmi, Kumar, Rakesh, Varshney, Vaibhav, and Garg, Pawan

Subjects
Stridor, Health
Abstract

Byline: Rashmi. Syal, Rakesh. Kumar, Vaibhav. Varshney, Pawan. Garg Sir, Thoracic duct injury after an oesophagectomy is a relatively rare complication with an incidence rate of around 0%-8%.[1] Post-operative airway [...]

Published
2021

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