VOLUME 6/2021, ISSUE 3

This work is licensed under a Creative Commons Attribution 4.0 International License. Journal of Engineering Sciences and Innovation (JESI) is indexed in the following databases for academic journals: – Directory of Open Access Journals (DOAJ); – EBSCO, Publishing Inc.; – Open Academic Journal Index (OAJI); – Index Copernicus; – Google Scholar.

Editor-in-chief: Valeriu V. JINESCU  University Politehnica of Bucharest Co-editor: Florin Teodor TANASESCU University Politehnica of Bucharest Honorary editor: Mihai MIHAITA President of Technical Sciences Academy of Romania Managing editor: Dan BOGDAN AGIR Publishing House Quarterly multidisciplinary scientific journal:: – covers all disciplines of engineering sciences; – free of charge. No processing and submission charges; – open access; – hard copy version, ISSN 2601 -6699; – on-line version, ISSN-L2537 – 320X; – high visibility, anyone can read and/or download a paper; – jesi@astr.ro

CONTENTS

 A. Mechanical Engineering 

Costică Atanasiu, Ștefan Sorohan 

Stress concentration in the components of a drive coupling

http://doi.org/10.56958/jesi.2021.6.3.223

 223 

Daniel Mărguță, Eugen Herghelegiu, Cătălin Tâmpu, Simona-Nicoleta Mazurchevici, Dumitru Nedelcu 

Technological parameters influence on biodegradable injected polymers during water jet cutting

http://doi.org/10.56958/jesi.2021.6.3.235

235 

George Ghiocel Ojoc, Cornel Băbuț, Nicolae Ungureanu, Lorena Deleanu 

FEM analysis of Storz coupling

http://doi.org/10.56958/jesi.2021.6.3.249

249 

C. Chemical Engineering, Materials Science and Engineering 

Grigore Bozga, Gheorghe Ivănuș, Ionuț Banu 

An analysis of dimethyl ether synthesis from syngas

http://doi.org/10.56958/jesi.2021.6.3.259

259 

Cosmin Jinescu 

Technological design elements for pulsed extraction columns with sieve trays

http://doi.org/10.56958/jesi.2021.6.3.271

271 

Claudia Samarineanu, Dumitra Lucan, Gabriela Tudorache 

The PbO concentration influence on oxides films developed on Incoloy 800 in CANDU secondary circuit conditions

http://doi.org/10.56958/jesi.2021.6.3.281

281 

Ion Bibicu 

Mössbauer studies on steel samples

http://doi.org/10.56958/jesi.2021.6.3.289

289 

Diana Paleu, Ileana-Denisa Nistor 

Aspects regarding the preparation methods of anionic clays

http://doi.org/10.56958/jesi.2021.6.3.307

307 

E. Civil Engineering and Transport Engineering 

Dan Stematiu, Radu Drobot 

A procedure for rating the dam safety improvement works

http://doi.org/10.56958/jesi.2021.6.3.323

323 

G. Petroleum and Mining Engineering 

Tudor Adrian Ionuț, Ripeanu Razvan George 

BEM simulation on the influence of dispersion currents on buried pipes

http://doi.org/10.56958/jesi.2021.6.3.335

335 

H. Inter – and Transdisciplinarity in Science and Technology 

Valeriu V. Jinescu 

The limitations of energy accessibility, the irreversibility and two transdisciplinary principles

http://doi.org/10.56958/jesi.2021.6.3.349

349 

AGIR Publishing House