E3S Web of Conferences

Open Access

Preface 00001

Gabriel Paul Negreanu, Nicolae-Valentin Vlăduţ, Mohand Tazerout and Can Ertekin

Published online: 12 July 2021

DOI: https://doi.org/10.1051/e3sconf/202128600001

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Opening Address 00002

Lucian Mihăescu

Published online: 12 July 2021

DOI: https://doi.org/10.1051/e3sconf/202128600002

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Researches on increasing the dissolved oxygen concentration in stationary waters 01001

Marilena Monica Boltinescu (Roza), Nicolae Vlad Sima, Dorina Nicoleta Albu, Mihaela Petroşel (Bănică) and Mihaela Constantin

Published online: 12 July 2021

DOI: https://doi.org/10.1051/e3sconf/202128601001

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Numerical investigation on combustion and NO_x emissions of a CH₄ / kerosene afterburner 01002

Andreea Cristina Mangra and Ene Barbu

Published online: 12 July 2021

DOI: https://doi.org/10.1051/e3sconf/202128601002

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Numerical modelling of heat convection processes in the ducts of two-stage heat exchanger 01003

Zhivko Kolev and Seher Kadirova

Published online: 12 July 2021

DOI: https://doi.org/10.1051/e3sconf/202128601003

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Improving the lifetime of an electro-compressor for autoclave with optimized buffer tank 01004

Iulian Vlăducă, Claudia Irina Borzea, Carmen Gheorghiţa Petre, Romeo Dorin Hriţcu, Raluca Lucia Maier, Vicențiu Liviu Ringheanu and Ramona Manuela Stanciuc

Published online: 12 July 2021

DOI: https://doi.org/10.1051/e3sconf/202128601004

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Cost analysis at different energy sources for heating of an air-supported dome for indoor tennis 01005

Ventsislav Gavrilov, Nina Penkova, Penka Zlateva and Boian Mladenov

Published online: 12 July 2021

DOI: https://doi.org/10.1051/e3sconf/202128601005

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The effects of split direct injection on the operation of a tractor diesel engine fueled by biodiesel B20 01006

Andrei Laurentiu Niculae, Adnan Kadhim Rashid and Radu Chiriac

Published online: 12 July 2021

DOI: https://doi.org/10.1051/e3sconf/202128601006

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Improving energy performance of a Cement Manufacturing factory by using Waste Heat Recovery Systems, Estimated vs. Actual achievements 01007

Mircea Scripcariu, Cristian Gheorghiu, Miruna Gheorghiu and Alexandra Gabriela Dobrica

Published online: 12 July 2021

DOI: https://doi.org/10.1051/e3sconf/202128601007

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Experimental COP evaluation of a 65-litre household refrigerator running with R600a 01008

Saleh J. Alqaisy, Kamel S. Hmood, Mahdi Hatf Kadhum Aboaltabooq, Valentin Apostol, Horatiu Pop, Jamal Al Douri and Viorel Bădescu

Published online: 12 July 2021

DOI: https://doi.org/10.1051/e3sconf/202128601008

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The Heat Transfer Performance of MWCNT, CuO, and Al₂O₃ Nanofluids in an Automotive Engine Radiator 01009

Karaar Mahdi Al-Araji, M.A. Almoussawi and Kareem J. Alwana

Published online: 12 July 2021

DOI: https://doi.org/10.1051/e3sconf/202128601009

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Using CFD to improve the performance of a heat exchanger from a gasifier 01010

Liliana Dumitrescu, Edmond Maican, Ioan Pavel, Cătălin Dumitrescu, Iuliana Găgeanu and Andrei Pătruț

Published online: 12 July 2021

DOI: https://doi.org/10.1051/e3sconf/202128601010

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Analytical model for estimating the production and composition of gas resulted through gasification 01011

Lucian Mihăescu, Ionel Pîșă, Iulia Simion and Gabriel Paul Negreanu

Published online: 12 July 2021

DOI: https://doi.org/10.1051/e3sconf/202128601011

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Review regarding defrosting methods for refrigeration and heat pump systems 01012

Jamal Al Douri, Kamel S. Hmood, Valentin Apostol, Horatiu Pop, Saleh J. Alqaisy and Elena Beatrice Ibrean

Published online: 12 July 2021

DOI: https://doi.org/10.1051/e3sconf/202128601012

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Revaluation of bamboo as biomass 02001

Nicoleta Alexandra Vanghele, Andreea Matache, Mariana Mădălina Stanciu and Dumitru Bogdan Mihalache

Published online: 12 July 2021

DOI: https://doi.org/10.1051/e3sconf/202128602001

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Valorization on the energy potential of Pistia stratiotes in sustainable agriculture-review 02002

Andreea Matache, Nicoleta Alexandra Vanghele, Mihai Gabriel Matache and Ancuța Alexandra Petre

Published online: 12 July 2021

DOI: https://doi.org/10.1051/e3sconf/202128602002

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Investigation of the thermodynamic and thermal properties of clary sage (Salvia sclarea L.) essential oil and its main components 02003

Stanislava Tasheva, Vanya Gandova, Vanya Prodanova-Stefanova, Krasimira Marinova, Milen Dimov, Krasimira Dobreva and Albena Stoyanova

Published online: 12 July 2021

DOI: https://doi.org/10.1051/e3sconf/202128602003

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Investigation of the thermodynamic and physicochemical properties of lavender oil (Lavandula angustifolia Mill.)-ethanol-water system 02004

Vanya Gandova, Stanislava Tasheva, Vanya Prodanova-Stefanova, Krasimira Dobreva, Ivayla Dincheva and Albena Stoyanova

Published online: 12 July 2021

DOI: https://doi.org/10.1051/e3sconf/202128602004

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Performance of cylindrical solar still with hemispherical cover: CFD simulation study 02005

Qahtan A Abed, Dhafer M Hachim and Wisam A Abd Al-Wahid

Published online: 12 July 2021

DOI: https://doi.org/10.1051/e3sconf/202128602005

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Energy efficiency in the building materials industry. Case study: Brick manufacturing in Romania 02006

Cristian Gheorghiu, Mircea Scripcariu, Miruna Gheorghiu and Alexandra Gabriela Dobrica

Published online: 12 July 2021

DOI: https://doi.org/10.1051/e3sconf/202128602006

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Archimedean screw as fish-friendly turbines for harnessing hydropower potential 02007

Cristian Purece and Lilica Corlan

Published online: 12 July 2021

DOI: https://doi.org/10.1051/e3sconf/202128602007

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The comparison of thermal comfort test results in selected traditional and modern buildings 02008

Natalia Krawczyk and Justyna Krakowiak

Published online: 12 July 2021

DOI: https://doi.org/10.1051/e3sconf/202128602008

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A study of the transient processes in the physical model of the electric power systems with predominant part of the renewable energy sources 02009

Ivaylo Nedelchev, Hristo Zhivomirov and Yoncho Kamenov

Published online: 12 July 2021

DOI: https://doi.org/10.1051/e3sconf/202128602009

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Study of regime parameters of the fermenter in the production of biogas from animal liquid waste materials 02010

Penka Zlateva, Angel Terziev and Krastin Yordanov

Published online: 12 July 2021

DOI: https://doi.org/10.1051/e3sconf/202128602010

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Renewable energy as an integral part of the Bulgarian energy mix 02011

Todorka Stankova and Daniela Toneva

Published online: 12 July 2021

DOI: https://doi.org/10.1051/e3sconf/202128602011

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Improving the efficiency of crystalline silicon solar cell through regulating their temperature using thin films of polyvinyl alcohol 02012

Ali Kadhim Naser, Dhafer Manea Hachim and Qahtan A Abed

Published online: 12 July 2021

DOI: https://doi.org/10.1051/e3sconf/202128602012

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Experimental researches on poultry manure combustion in co-combustion with biomass 02013

Gheorghe Lăzăroiu, Gabriel Paul Negreanu, Ionel Pîșă, Rodica Manuela Grigoriu and Dana-Alexandra Ciupăgeanu

Published online: 12 July 2021

DOI: https://doi.org/10.1051/e3sconf/202128602013

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Defining of criteria for flue gas decarbonization efficiency in methanation reactors with membrane technology 02014

Gheorghe Lăzăroiu, Lucian Mihăescu, Dana-Alexandra Ciupăgeanu, Rodica-Manuela Grigoriu and Dana-Andreya Bondrea

Published online: 12 July 2021

DOI: https://doi.org/10.1051/e3sconf/202128602014

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Evaluation of the influence of the windbreak trees on the change of wind shear in weakly complex terrains 02015

Angel Terziev, Yancho Panteleev, Iliya Iliev and Hristo Beloev

Published online: 12 July 2021

DOI: https://doi.org/10.1051/e3sconf/202128602015

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A theoretical study on the mass input and output and energy of the biomedical waste incinerator 02016

Sari Jaber, Alaa Aldin Aljawad, Tudor Prisecaru and Elena Pop

Published online: 12 July 2021

DOI: https://doi.org/10.1051/e3sconf/202128602016

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The environmental situation of the ash medical waste in Baghdad city, Iraq 02017

Sari Jaber, Alaa Aldin Aljawad, Tudor Prisecaru and Elena Pop

Published online: 12 July 2021

DOI: https://doi.org/10.1051/e3sconf/202128602017

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Selective, weighted morphological research, by dividing the equipment for biocompost production by submorphologies 03001

Mihai Olan, Anișoara Păun, Paul Găgeanu, Nicoleta Ungureanu, George Bunduchi and Alexandru Zaica

Published online: 12 July 2021

DOI: https://doi.org/10.1051/e3sconf/202128603001

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Desorption capacity of raw energy bars with fruits of Zizyphus jujuba Mill. - Bulgaria 03002

Albena Durakova, Adelina Vasileva, Tzvetana Gogova, Milena Temelkova and Rumyana Krasteva

Published online: 12 July 2021

DOI: https://doi.org/10.1051/e3sconf/202128603002

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Sorption characteristics of ready-made mixtures containing oatflakes, apples, and cinnamon 03003

Albena Durakova, Adelina Vasileva and Kornelia Choroleeva

Published online: 12 July 2021

DOI: https://doi.org/10.1051/e3sconf/202128603003

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An experimental investigation of working with ordinary and electromagnetic nozzles 03004

Dimitar Kehayov, Atanas Atanasov and Dan Cujbescu

Published online: 12 July 2021

DOI: https://doi.org/10.1051/e3sconf/202128603004

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Experimental research on obtaining pelletized feed recipes with applicability in semi-intensive aquaculture systems 03005

Iulian Voicea, Corina Ioana Moga, Sorin-Ștefan Biriș, Gabriel-Alexandru Constantin, Sorin Boruz and Mihai Gabriel Matache

Published online: 12 July 2021

DOI: https://doi.org/10.1051/e3sconf/202128603005

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Determination of qualitative working indices of harrows with elastic fangs 03006

Dan Cujbescu, Gheorghe Matei, Dimitar Kehayov and Atanas Atanasov

Published online: 12 July 2021

DOI: https://doi.org/10.1051/e3sconf/202128603006

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Experimental research for obtaining functional ingredients from Jerusalem artichoke and hemp seeds 03007

Iuliana Găgeanu, Cătălin Persu, Gabriel Gheorghe, Diana Popa and Liliana Dumitrescu

Published online: 12 July 2021

DOI: https://doi.org/10.1051/e3sconf/202128603007

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Strength analysis and modal analysis for the load-bearing structure of the equipment for opening and compartmentalizing watering furrows, using 1D 03008

Petru Cardei, Raluca Sfiru, Marius Oprescu, Vergil Muraru and Cornelia Muraru

Published online: 12 July 2021

DOI: https://doi.org/10.1051/e3sconf/202128603008

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Analysis of the resistance frame of the equipment for opening and compartmentalizing watering furrows, using 3D finite elements 03009

Petru Cardei, Marius Oprescu, Nicolae Constantin, Ștefan-Sorin Biriș and Sebastian Muraru

Published online: 12 July 2021

DOI: https://doi.org/10.1051/e3sconf/202128603009

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Storage of grains and technical plants through active ventilation for the purpose of maintaining the quality of stored products 03010

Anişoara Pӑun, Gheorghe Stroescu, Alexandru Zaica, Samir Yasbeck Khozamy, Ana Zaica, Oana Cristea, Vasilica Ştefan and Carmen Bălţatu

Published online: 12 July 2021

DOI: https://doi.org/10.1051/e3sconf/202128603010

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Experimental research of equipment for burying in the ground the drip irrigation lines 03011

Dragoș Manea, Eugen Marin, Gabriel Gheorghe, Cătălin Persu and Roxana Mitroi

Published online: 12 July 2021

DOI: https://doi.org/10.1051/e3sconf/202128603011

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Kinematics of the seedling plant with vertical distributor and buckets 03012

Paul-Marius Mitrache, Radu Ciupercă and Ioan Sărăcin

Published online: 12 July 2021

DOI: https://doi.org/10.1051/e3sconf/202128603012

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Biological water treatment in a recirculating aquaculture system 03013

Evelin-Anda Laza, Ioan Ladislau Caba, Mihai Olan and Valentin Vladut

Published online: 12 July 2021

DOI: https://doi.org/10.1051/e3sconf/202128603013

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Technology for biohumus production, an alternative to conventional fertilizers for bio agriculture 03014

Evelin-Anda Laza, Oana Cristea and Nicoleta Ungureanu

Published online: 12 July 2021

DOI: https://doi.org/10.1051/e3sconf/202128603014

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Precision sowing of vegetable seeds using electrically operated distribution devices 03015

Adriana Muscalu, Cătălina Tudora, Laurențiu Vlăduțoiu, Constantin Vlad and Angela Dorogan

Published online: 12 July 2021

DOI: https://doi.org/10.1051/e3sconf/202128603015

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Advanced method of managing soil conservation works in Smart Farms 03016

Eugen Marin, Marinela Mateescu and Carmen Bălțatu

Published online: 12 July 2021

DOI: https://doi.org/10.1051/e3sconf/202128603016

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Photodegradable organic pollutants from wastewater 03017

Oana Stoian, Cristina Ileana Covaliu, Gigel Paraschiv, Mihai Nita-Lazar and Ioana-Corina Moga

Published online: 12 July 2021

DOI: https://doi.org/10.1051/e3sconf/202128603017

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Pollutants resulting from intensive poultry farming activities and their impact on the environment 03018

Roxana Mitroi, Oana Stoian, Cristina Ileana Covaliu and Dragoş Manea

Published online: 12 July 2021

DOI: https://doi.org/10.1051/e3sconf/202128603018

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Considerations on the importance of the main chemical properties of the soil in agrochemical studies 03019

Sebastian Muraru, Vergil Muraru, Paula Condruz, Cornelia Muraru Ionel and Raluca Sfiru

Published online: 12 July 2021

DOI: https://doi.org/10.1051/e3sconf/202128603019

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Developing efficient practices for producing bioethanol from sweet sorghum, evaluating several varieties of the plant and growing environments 03020

Florin Nenciu, Valentin Vlăduț, Gabriel Nae, Lorena-Diana Popa and Oana Emilia Constantin

Published online: 12 July 2021

DOI: https://doi.org/10.1051/e3sconf/202128603020

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Studies and research on the tribological behavior of the braking systems of vehicles. Review 03021

Andreea-Catalina Cristescu, Ilie Filip, George Ipate, Gheorghe Voicu and Vasilica Stefan

Published online: 12 July 2021

DOI: https://doi.org/10.1051/e3sconf/202128603021

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Identifying new criteria for assessing the impact on the ecosystem generated by the establishment of Jerusalem artichoke crops on difficult and floodable soils 03022

Florin Nenciu, Gabriel Nae, Gabriela Milian, Iulian Dumitru, Gheorghe Matei and Simona Isticioaia

Published online: 12 July 2021

DOI: https://doi.org/10.1051/e3sconf/202128603022

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Estimation of the stress state of agricultural harrows with vertical axis rotor, using mathematical models with finite elements 03023

Valentin Cornel Iordache and Ion Saracin

Published online: 12 July 2021

DOI: https://doi.org/10.1051/e3sconf/202128603023

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Research regarding the common problems of design of the bunkers – A review 03024

Ancuta Alexandra Petre, Mariana Mădălina Stanciu, Dumitru Bogdan Mihalache and Dragoș Dumitru

Published online: 12 July 2021

DOI: https://doi.org/10.1051/e3sconf/202128603024

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Integrating Green Tourism and Bioenergy for Sustainable Rural Development: the Example of the Hemp Cluster in Sumy Region in Ukraine 03025

Hanna Shevchenko

Published online: 12 July 2021

DOI: https://doi.org/10.1051/e3sconf/202128603025

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Designing and dimensioning of a new type of pump that can be used in the field of land reclamation 04001

Mariana Mirela Stoican (Prisecaru) and Nicolae Băran

Published online: 12 July 2021

DOI: https://doi.org/10.1051/e3sconf/202128604001

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Research on Exhaust Gas Cleaning System (EGCS) used in shipping industry for reducing SO_x emissions 04002

Mihail-Vlad Vasilescu, Dumitru Dinu, Mariana Panaitescu and Fanel-Viorel Panaitescu

Published online: 12 July 2021

DOI: https://doi.org/10.1051/e3sconf/202128604002

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Models to estimate river temperature. Example for Danube, at Oltenița in the context of climate change and anthropic impact 04003

Daniela-Elena Gogoașe-Nistoran, Cristina Sorana Ionescu and Ioana Opriș

Published online: 12 July 2021

DOI: https://doi.org/10.1051/e3sconf/202128604003

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A method to analyse urban heatwaves. Case study - Bucharest City (Romania) 04004

Daniela-Elena Gogoașe-Nistoran, Daniel-Marian Antohe, Ioana Opriș and Cristina-Sorana Ionescu

Published online: 12 July 2021

DOI: https://doi.org/10.1051/e3sconf/202128604004

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Theoretical and experimental researches on the implementation of smart location 04005

Mariana Panaitescu, Fanel-Viorel Panaitescut, Marius-Valentin Dumitrescu and Valeriu-Nicolaie Panaitescu

Published online: 12 July 2021

DOI: https://doi.org/10.1051/e3sconf/202128604005

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Dimensional characteristics of grist intermediate products obtained in the first two technological passages in the reduction phase of an industrial milling plant 04006

Gabriel-Alexandru Constantin, Gheorghe Voicu, Elena-Madalina Stefan, Mariana-Gabriela Munteanu, Gabriel Musuroi and Iulian Voicea

Published online: 12 July 2021

DOI: https://doi.org/10.1051/e3sconf/202128604006

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Installation of submarine cables and pipes in shallow waters and connecting them to the shore by the method of horizontal directional drilling 04007

Valeriu-Florian Vasilescu and Dumitru Dinu

Published online: 12 July 2021

DOI: https://doi.org/10.1051/e3sconf/202128604007

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Technologies used for food preservation using microwaves 04008

Elena Sorică, Cristian Marian Sorică, Mario Cristea and Iulia Andreea Grigore

Published online: 12 July 2021

DOI: https://doi.org/10.1051/e3sconf/202128604008

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Aspects regarding the use of ultrasounds in the food industry 04009

Cristian Marian Sorică, Marian Vintilă, Laurentiu Vlădutoiu, Elena Sorică, Iulia Andreea Grigore and Mario Cristea

Published online: 12 July 2021

DOI: https://doi.org/10.1051/e3sconf/202128604009

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Pneumatic Actuator Controlled by Proportional Valve. Experimental results 04010

Valentin Nicolae Cococi, Constantin Călinoiu and Carmen-Anca Safta

Published online: 12 July 2021

DOI: https://doi.org/10.1051/e3sconf/202128604010

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Electronic system for control of temperature of exhaust gases and pressure in turbochargers of diesel automobile engines 04011

Seher Kadirova, Stiliyan Okishelov and Zhivko Kolev

Published online: 12 July 2021

DOI: https://doi.org/10.1051/e3sconf/202128604011

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Developing a comprehensive GIS tool to evaluate representative parameters regarding life comfort 04012

Cristian-Gabriel Alionte, Dana Rizescu and Ciprian Ion Rizescu

Published online: 12 July 2021

DOI: https://doi.org/10.1051/e3sconf/202128604012

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Open Access

Considerations regarding the anti-icing system for the ship propulsion plant with gas turbine 04013

George Iulian Balan, Octavian Narcis Volintiru, Ionut Cristian Scurtu, Florin Ioniță, Mirela Letitia Vasile and Claudia Borzea

Published online: 12 July 2021

DOI: https://doi.org/10.1051/e3sconf/202128604013

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Open Access

Numerical and analytical study of seismic response of structural systems with new formulation using energy and impact methods 04014

Mehdi Babaei, Somayeh Mollaei, Amin Moslemi Petrudi, Maysam Jalilkhani and Ionut Cristian Scurtu

Published online: 12 July 2021

DOI: https://doi.org/10.1051/e3sconf/202128604014

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