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您的检索式：作者名="Ankit Kayal"
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| 1 | Tissue engineered indigenous pericardial patch urethroplasty: A promising solution to a nagging problem显示文摘Objective:Urethral stricture is a highly prevalent disease and has a continued ris-ing incidence.The global burden of disease keeps rising as there are significant rates of recur-rence with the existing management options with the need for additional repeat procedures.Moreover,the existing treatment options are associated with significant morbidity in the pa-tient.Long segment urethral strictures are most commonly managed by augmentation urethro-plasty.We explored the potential for the application of an acellular tissue engineered bovine pericardial patch in augmentation urethroplasty in a series of our patients suffering from ure-thral stricture disease.The decreased morbidity due to the avoidance of harvest of buccal mu-cosa,decreased operative time and satisfactory postoperative results make it a promising option for augmentation urethroplasty.Methods:Nine patients with long segment anterior urethral strictures(involving penile and/or bulbar urethra and stricture length>4 cm)were included in the study after proper informed consent was obtained.Acellular tissue engineered indigenous bovine pericardial patch was used for urethroplasty using dorsal onlay technique.Results:A total of nine patients underwent tissue engineered indigenous pericardial patch ur-ethroplasty for long segment urethral strictures,mostly catheter injury induced or associated with balanitis xerotica obliterans.Median follow-up was 8 months(range:2-12 months).Out of nine patients,eight(88.9%)were classifed as success and one(11.1%)was classified as fail-ure.Conclusion:Our study brings a product of tissue engineering,already being used in the cardio-vascular surgery domain,into the urological surgery operating room with satisfactory results achieved using standard operating techniques of one stage urethroplasty. | Tapan K.Mandal Shashanka Dhanuka Sunirmal Choudhury Bibhas C.Mukhopadhyay Ankit Kayal Tapas K.Majhi Maharaj Mondal | 2020 | Asian Journal of Urology2020，7，1： | 1 |
| 2 | A multicountry comparison of cryptocurrency vs gold: Portfolio optimization through generalized simulated annealing显示文摘The last few years have seen a paradigm shift in the financial sector with the development of cryptocurrencies as an alternative mode of payment as well as an investment scheme.The aim of this study is two-fold.The first is to quantify the volatility of cryptocurrencies in terms of the dynamics of tail-end behavior using different approaches and choose the one with the lowest value-at-risk.The second is to investigate the effect of its inclusion in a portfolio with and without gold,to see if Bitcoin is indeed the“digital gold”.This paper uses the generalized simulated annealing optimization technique to compare portfolios for ten countries across the world.The data provide convincing evidence in favor of the inclusion of Bitcoin in the optimized portfolios.Rolling-window analyses(three-year and five-year)confirm the same.However,for some countries,the empirical pattern suggests that instead of replacing gold from the portfolio,both should be comprised.Our results are robust in terms of the inclusion of non-linear constraints. | Ankit Som Parthajit Kayal | 2022 | Blockchain(Research and Applications)2022，3，3： | 0 |
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