Search

Your search keyword '"A. Vijay Kumar"' showing total 8,681 results
Start Over Author "A. Vijay Kumar" Search Limiters Peer Reviewed

Refine your results

8,681 results on '"A. Vijay Kumar"'

1. Magnesium-eutectic electrolyte as a winning combination for sustainable battery

Author

Mohan Gorle, A. Vijay Kumar, and Vatsala Rani Jetti

Subjects
Eutectic electrolyte, Magnesium battery, Carbon material, Sustainable batteries, Chemistry, QD1-999
Abstract

Eutectic-Magnesium electrolytes are sparsely used electrolytes in Magnesium ion batteries. In this context, readily available less toxic precursors based eutectic electrolytes are attracting increasing interest owing to the focus of sustainable battery development. The unique benefits of magnesium such as high specific capacity, low reduction potential, and remarkable reversibility without dendrimer formation are highly advantages when compare to lithium based batteries. Developing an optimal electrolyte composition is a key area of study in the field of battery technology. With improved cell performance, stability across cycles, and general safety, we hope to reduce unwanted interfacial reactions. In this study, we examined eutectic combination of trimethylamine hydrochloride and aluminium chloride (TMA: AlCl3 = TMA) along with magnesium perchlorate to understand ion-solvation, complexation, thermal stability, ion transport and conduction, and electrochemical stability, certain physico-chemical and electrochemical parameters were evaluated prior to assessing the cell's performance. The salient features being an ionic conductivity (σ) of 6.25×10−3 mS cm−1 at 30 °C, remarkable performance retention with over 90 cycles of operation with the electrolyte and an impressive capacity of 90 mAh/g. The behaviour of ionic conductivity with temperature followed the Vogel-Tammann-Fulcher (VTF) equation. Moreover, the anodic stability around 2.5 V (Mg/Mg2+) when platinum is used as the working electrode endorses the suitability of the electrolyte for use in Rechargeable Magnesium Batteries (RMBs).The promising results of this first investigation open up new possibilities for investigating complementary pairings with the aim of improving the efficiency of magnesium-ion cells.

Published
2024
Full Text
View/download PDF

29. Glans cap-preserving dorsal inlay-free graft augmentation technique for reconstruction of meatal stenosis and fossa navicularis strictures: Analysis of short-term functional outcomes

Author

Enganti, Bhavatej, Nanavati, Prashant, Madduri, Vijay Kumar Sarma, Wani, Amish, and Chiruvella, Mallikarjuna

Subjects
Medical research -- Methods, Medicine, Experimental -- Methods, Penis -- Methods, Stenosis -- Methods, Health
Abstract

Introduction: Meatal stenosis and fossa navicularis strictures (FNSs) are commonly caused by lichen sclerosus and instrumentation. We present the technique and short-term functional outcomes of glans cap-preserving dorsal inlay-free graft augmentation for the reconstruction of meatal stenosis and FNS. Methods: This retrospective study analyzed patients with meatal stenosis and FNS who underwent glans cap-preserving dorsal inlay-free graft augmentation at our institute since 2019. The surgical technique included a ventral subcoronal approach, preservation and mobilization of the glans cap, a ventral midline urethrotomy incision over the stricture, and a dorsal midline meatotomy incision extending to the proximal normal urethral mucosa at the fossa navicularis, followed by dorsal inlay graft augmentation. During the follow-up, patients were periodically assessed for symptom scores, urinary flow rates (UFRs), and patient-reported outcomes. Results: A total of 26 patients with a mean age of 45 ± 15 years were assessed. The predominant cause of stricture was lichen sclerosus (n = 15; 58). The mean stricture length was 3.8 ± 0.5 cm, 73 had a circumcised phallus, and an oral mucosa graft augmentation was performed in 22 (85) patients. Notable postoperative complications included intractable meatal hemorrhage (n = 1) and glans suture granuloma (n = 1), which required intervention. At a mean follow-up of 40 months, there were four failures, of which one patient required redo-urethroplasty. The remaining patients (n = 22; 85) showed improved symptom scores (P < 0.05), UFRs (P < 0.05), and satisfactory patient-reported outcomes. Conclusion: Glans cap-preserving dorsal inlay-free graft augmentation is a safe and feasible technique with satisfactory short-term functional outcomes for the management of meatal stenosis and FNS in carefully selected patients., Author(s): Bhavatej Enganti (corresponding author) [1]; Prashant Nanavati [1]; Vijay Kumar Sarma Madduri [1]; Amish Wani [1]; Mallikarjuna Chiruvella [1] INTRODUCTION Meatal stenosis and fossa navicularis stricture (FNS) are infrequent [...]

Published
2024
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results