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Ultrasonically Assisted Cutting of Histological Sections for Reducing the Environmental and Financial Impact of Microtomy

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Chinese Journal of Mechanical Engineering 2022年第3期35卷 200-206页

作者： Dong Wang Daniel De Becker anish roy Wolfson School of Mechanical and Manufacturing Engineering Loughborough UniversityLoughborough LE113TUUK Department of Engineering College of EngineeringMathematics and Physical SciencesUniversity of ExeterExeter EX44QFUK

Modern-day microtomy requires high precision equipment to thinly section biological *** sectioned tissue must be of good quality not showing cutting tracks or so-called *** quality of these sections is dependent on the blade wear,which is related to the hardness of the tissue sample,cutting angle and cutting speed.A test rig has been designed and manufactured to allow these parameters to be *** has allowed for the blade wear to be analysed and quantified,and this has been completed for both ultrasonically assisted and conventional *** obtained results showed a 25.2%decrease in average blade roughness after 38 cuts when using the ultrasonically assisted cutting *** data also showed no adverse effect on the quality of the slides produced when using this cutting ***,the cutting force measured for both cutting regimes showed that ultrasonically assisted cutting required less force compared to conventional *** the reduction of surface roughness and force,it is possible to state that ultrasonically assisted cutting reduces the wear of the blade,thereby increasing the life of the *** increase of just 10%in blade life would yield a cost saving of approximately 25%thereby reducing the environmental and financial impact of microtomy.

关键词： Microtome Ultrasonically assisted cutting Blade wear

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Modeling and analysis of singular systems via orthogonal triangular functions

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控制理论与应用（英文版） 2013年第2期11卷 141-148页

作者： Suchismita GHOSH anish DEB Srimanti roy CHOUDHURY Gautam SARKAR Department of Electrical Engineering MCKV Institute of Engineering Department of Applied Physics University of Calcutta92 APC RoadKolkata 700009 India Department of Electrical Engineering Budge Budge Institute of Technology Department of Applied Physics University of Calcutta2 APC RoadKolkata 700009 India

This paper presents a new approach to singular system analysis by modeling the system in terms of orthog- onal triangular functions （TFs）. The proposed method is more accurate compared to block pulse function-based analysis with respect to mean integral square error （MISE）. A numerical example involving four states of a singular system is treated and solutions obtained thereof. Four tables and relevant curves are presented to compare the respective coefficients in block pulse function （BPF） domain as well as in TF domain. The percentage error of the samples determined via TF domain are compared with the exact samples of the states. Furthermore, MISE for both BPF and TF analysis are computed and compared to reveal the efficiency of TF-based analysis.

关键词： Singular systems Triangular functions Block pulse functions System analysis Modeling

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A new recursive method for the analysis of linear time invariant dynamic systems via double-term triangular functions (DTTF) in state space environment

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控制理论与应用（英文版） 2013年第1期11卷 108-115页

作者： anish DEB Suchismita GHOSH Srimanti roy CHOUDHURY Gautam SARKAR Department of Applied Physics University of Calcutta Department of Electrical Engineering MCKV Institute of Engineering Department of Electrical Engineering Budge Budge Institute of Technology

This paper presents a new recursive method for system analysis via double-term triangular functions （DTTF） in state space environment. The proposed method uses orthogonal triangular function sets and proves to be more accurate as compared to single term Walsh series （STWS） method with respect to mean integral square error （MISE）. This has been established theoretically and comparison of error with respect to MISE is presented for clarity. A numerical example is treated to establish the proposed method. Relevant curves for the solutions of states of the dynamic system are also presented with plots of percentage error for DTTF-based analysis.

关键词： Double term triangular functions Walsh functions, System analysis Single term Walsh series Mean integral square error (MISE)

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