VOLUME 8/2023 ISSUE 2

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Journal of Engineering Sciences and Innovation (JESI) is indexed in the following databases for academic journals:

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Editing: Ing. Iolanda Constanţa PANAIT

Cover: Mihai GĂZDARU

Technical Sciences Academy of Romania

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Editor-in-chief: Valeriu V. JINESCU
University Politehnica of Bucharest
Co-editor: Florin Teodor TANASESCU
University Politehnica of Bucharest
Honorary editor: Mihai MIHAITA
Honorary 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;
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– hard copy version, ISSN 2601 -6699;
– on-line version, ISSN-L2537 – 320X;
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Copyright. Journal of Engineering Sciences and Innovation (JESI) has the copyright for all the published papers; it is a Gold Open Access Journal.
The readers are free to download, copy and distribute the paper content, even commercially, as long as they credit you for the original creation and cited the paper author(s).

Journals fusion. Starting January 01, 2022 the journals mentioned below fuse with JESI and terminate their activity. The issues specific to each journal will be included in the appropriate section of the JESI:

‒ the journal Termotehnica / Thermal Engineering / Thermotehnique, will be included in section Thermal Science and Engineering;

‒ the Romanian Journal of Mechanics will be included in the section Mechanical Engineering;

‒ the Journal Telecommunications will be included in the section Electrical and Electronics Engineering, Computer Sciences and Engineering.

A. Mechanical Engineering
Alina Marguta, Simona-Nicoleta Mazurchevici, Dumitru Nedelcu
Coating of a lignin-based polymer with ceramic micro-powders

101

Mircea Radeș
Modal screening of vibrating systems with local modes

113

Daniela Tarniţă, Alin Petcu, Gabriela Marinache, Dan Marghitu
Experimental evaluation of the treadmill speed and incline effects on the ankle kinematics in healthy subjects

125

Ionel Staretu
The most important source of inspiration for artificial gripping systems are natural gripping systems

139

C. Chemical Engineering, Materials Science and Engineering
Nassima Chenikha, Pauline Spaeter, Corentin Gay, Anne Verniere, Patrice Berthod
Microstructures in as–cast condition of Medium Entropy Alloys designed to contain eutectic carbides TaC or HfC

159

D. Environmental Engineering and Energy
Viorel Badescu
Best operation strategies for piezoelectric vibration energy harvesters. I. Theory

171

E. Civil Engineering and Transport Engineering
Dan Constantinescu, Horia Petran, Cristian Petcu
Functional principles of the envelope characterized by the variable thermal resistance of the wall as a result of parietodynamic exhaust effect (PDE)