VOLUME 3/2018,ISSUE 4

This work is licensed under a Creative Commons Attribution 4.0 International License. The Journal is included in the international database: DOAJ (Directory of Open Access Journals)

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 RomaniaManaging editor: Ioan Ganea AGIR Publishing House Journal of Engineering Sciences and Innovation is a quarterly multidisciplinary scientific journal, print and electronic: – 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

Nicoleta-Violeta Stanciu, Felicia Stan, Catalin Fetecau, Alexandru Serban
Fabrication and characterization of LDPE and HDPE filaments for 3D printing

http://doi.org/10.56958/jesi.2018.3.4.299

299

B. Chemical Engineering, Materials Science and Engineering

Dumitra Lucan, Şerban Constantin Valeca, Gheorghiţa Jinescu, Lucian Velciu
Corrosion of some candidate structural materials for lead fast reactors

http://doi.org/10.56958/jesi.2018.3.4.313

313

Edgar Moraru, Daniel Besnea, Alina Spânu, Victor Constantin
Experimental research on some modern technologies and materials applied in prosthetic dentistry

http://doi.org/10.56958/jesi.2018.3.4.329

329

C. Environmental Engineering and Energy

Florea Chiriac, Victor Chiriac
Energy recovery systems for the efficient cooling of data centers using absorption chillers and renewable energy resources 

http://doi.org/10.56958/jesi.2018.3.4.339

339

D. Electrical and Electronics Engineering

Dragomir Toma-Leonida, Cîmpeanu Alexandru
Improving the behaviour of a suboptimal control system 

http://doi.org/10.56958/jesi.2018.3.4.351

351

Octavian Pastravanu, Mihaela-Hanako Matcovschi, Mihail Voicu
Perron-Frobenius theory applied to Leontief economic systems

http://doi.org/10.56958/jesi.2018.3.4.363

363

Ion Murgescu, Lucia-Andreea El-Leathey, Rareş-Andrei Chihaia
Guaranteed versus real service life of PV panels in Romania

http://doi.org/10.56958/jesi.2018.3.4.375

375

E. Petroleum and Mining Engineering

Mohamed Halafawi, Lazăr Avram
Application of risk analysis in drilling well problems and operations- field case study

http://doi.org/10.56958/jesi.2018.3.4.393

393

AGIR Publishing House