Arhivă revistă

35-18 JOCURI, GAMIFICARE ȘI ÎNVĂȚAREA PE BAZĂ DE JOC

Această intrare a fost publicată în 2019 Volumul 35 și etichetată Carmen BAL Carmen Ioana IUHOS Ioana Maria CÂMPEAN la de

GAMES, GAMIFICATION AND GAME-BASED LEARNING

This paper presents the games, the teaching games when I am using in the educational process of our students. This project is an active form, that involves and encourages transfer of knowledge, skills, capabilities, facilitate and require interdisciplinary approaches, and strengthening social skills of students. It is particularly useful when the teacher aims at practical learning and building bridges between theoretical and creativity experience of the students.

          Keywords: teaching games, gamification, game-based learning Cuvinte cheie: jocuri didactice, gamificare, învătare pe bază de joc 
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35-19 METODA HĂRȚII CONCEPTUALE UTILIZATĂ ÎN PROCESUL DE ÎNVĂȚAMÂNT

Această intrare a fost publicată în 2019 Volumul 35 și etichetată Carmen BAL Carmen Ioana IUHOS Ioana Maria CÂMPEAN la de

CONCEPTUAL MAPS METHOD USED IN THE LEARNING PROCESS

This paper presents the conceptual maps used to teaching or for evaluation. This method is important for the organization systemizing of the lesson. Used in planning the activity, conceptual maps help to conceptualize the goals and objectives to be met, the material and human needs, the necessary resources and capacities, and other variables involved in the smooth running of the activity.

Keywords: conceptual maps, learning process, cognitive maps, hierarchical way, logical thinking, learning abilities

Cuvinte cheie: hărți conceptuale, proces de învățământ, hărți cognitive, modalitate ierarhizată, gândire logică, abilități de învățare

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35-20 SISTEME CURRICULARE COMPARATIVE

Această intrare a fost publicată în 2019 Volumul 35 și etichetată Carmen BAL Carmen-Ioana IUHOS Ioana-Maria CÂMPEAN la de

COMPARATIVE CURRICULAR SYSTEMS

A comparative approach to the curricula of different countries reveals the diversity of the concept of program and its evolution, both historical and geographical. However, what appears common to the various education systems and reforms implemented in various countries in recent years, is the focus on school requirements in terms of learning objectives. More and more, an approach characterized by the notion of curriculum which would replace, at least partially, that of program seems to assign objectives in terms of quality of learning and education „Inclusive” in contrast to a more traditional conception of educational programs whose content to be acquired would be a source of student selection by exclusion in case of failure.

Keywords: curricular systems, learning, education, key competences Cuvinte cheie: sisteme curriculare, învățare, educație, competențe cheie

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35-21 STRATEGII DIDACTICE- ASPECTE FORMATIVE ȊN PROCESUL DE PREDARE-ȊNVĂŢARE

Această intrare a fost publicată în 2019 Volumul 35 și etichetată Adriana Ioana SCHEAU la de

TEACHING STRATEGIES – FORMATIVE ASPECTS IN THE PROCESS OF TEACHING-LEARNING

It is obvious the central role of didactic strategies in the teaching process, but their choice and use in an educational approach is directly and strictly influenced by the teacher’s vision, his personality, his ability to select, adapt and apply those strategies which targets the maximum potential for success of educational action. The didactic strategy involves establishing a bridge between the teaching process and learning process. Their efficiency is ensured when calling for the ability to actively and creatively to use information, skills and abilities.

Keywords: didactic strategy, teaching methods

Cuvinte cheie: strategie didactică, metode didactice

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35-22 TEORIA INTELIGENȚELOR MULTIPLE – IMPLICAȚII EDUCAȚIONALE

Această intrare a fost publicată în 2019 Volumul 35 și etichetată Carmen BAL Carmen-Ioana IUHOS Ioana-Maria CÂMPEAN la de

THE THEORY OF MULTIPLE INTELLIGENCE – EDUCATIONAL IMPLICATIONS

An intelligence is a computational capacity (the ability to process a certain type of information) that is found in human biology and human psychology (H. Gardner, 2006). An intelligence involves the ability to solve or create problems that matter in a particular cultural context or in a community. The problem-solving ability allows the person to address a situation where a goal must be reached and the path best suited to achieving it must be located. The theory of multiple intelligences is formulated in light of the biological origins of each problem-solving ability. Only those skills that are universal to the human species are considered.

Keywords: intelligence, knowledge, learning, intellectual profile

Cuvinte cheie: inteligența, cunoaștere, învățare, profil intelectual

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35-23 UTILIZAREA METODEI CUVINTELOR ÎNCRUCIȘATE ÎN PROCESUL DE ÎNVĂȚĂMÂNT

Această intrare a fost publicată în 2019 Volumul 35 și etichetată Carmen BAL Carmen Ioana IUHOS Ioana Maria CÂMPEAN la de

USING THE CROSSING WORDS METHODS IN EDUCATIONAL PROCESS

This paper presents one new methods of the crossing words when I am using in the educational process of the students. This project is an active form, that involves and encourages transfer of knowledge, skills, capabilities, facilitate and require interdisciplinary approaches, and strengthening social skills of students. It is particularly useful when the teacher aims at practical learning and building bridges between theoretical and creativity experience of the students.

Keywords: method, the crossing words method, creativity, evaluation Cuvinte cheie: metodă, metoda cuvintelor încrucișate, creativitate, evaluare

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35-24 UTILIZAREA SOFTURILOR EDUCAȚIONALE ÎN PROCESUL DE ÎNVĂȚĂMÂNT

Această intrare a fost publicată în 2019 Volumul 35 și etichetată Carmen BAL Carmen Ioana IUHOS la de

USE OF EDUCATIONAL SOFTWARE IN THE EDUCATIONAL PROCESS

In view of the accelerated development of technology and the emergence of the „screen-agers” generation, computer use in the learning process becomes a necessity.

Keywords: computer, educational software, internet, didactic game

Cuvinte cheie: calculator, soft educațional, internet, joc didactic

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35-31 ELEMENTE DE MONITORIZARE A TRAFICULUI RUTIER. PARTEA I – TEHNICI DE CONTROL

Această intrare a fost publicată în 2019 Volumul 35 și etichetată Carmen PURCAR Mircea BӐDESCU la de

TRAFFIC MONITORING ELEMENTS. PART I – CONTROL TECHNIQUES

Road traffic is in continuous development. It is necessary to implement effective systems for organizing and controlling this traffic. The present paper provides a very detailed documentation of the road traffic control options in the European Community. Documentation was necessary to propose a variant of control system in a crowded area of road traffic in Romania (part II of the paper)

Keywords: intelligent transport system, traffic control, traffic efficiency Cuvinte cheie: sistem inteligent de transport, control trafic, eficiența traficului

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35-32 ELEMENTE DE MONITORIZARE A TRAFICULUI RUTIER. PARTEA A II-A – TEHNICI DE CÂNTĂRIRE

Această intrare a fost publicată în 2019 Volumul 35 și etichetată Carmen PURCAR Mircea BӐDESCU la de

ROAD TRAFFIC MONITORING ELEMENTS. PART II – WEIGHING TECHNIQUES

The problem of loading the transport vehicles is particularly important for any transport system. Loading them above the permissible limits may cause damage to the vehicles, unsafe transport, accidents, high fuel consumption, pollution of the environment, etc. The paper analyzes the weighing systems for road traffic, their advantages and disadvantages. An implementation proposal has been made for such a weighing system in the Călimăneşti / Seaca DN7 area, Vâlcea County.

Keywords: traffic control, overloaded vehicles, traffic monitoring

Cuvinte cheie: control trafic, vehicule supraîncărcate, monitorizare trafic

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35-33 OPTIMIZAREA FLUXURILOR DE TRAFIC ŞI A PARCAJELOR. STUDIU DE CAZ: PROIECTAREA UNEI PARCĂRI SUBTERANE ÎN ZONA CENTRALĂ A UNUI MUNICIPIU

Această intrare a fost publicată în 2019 Volumul 35 și etichetată Marinela INŢĂ la de

OPTIMIZING TRAFFIC FLOWS AND PARKING LOTS. CASE STUDY: DESIGN OF UNDERGROUND PARKING IN THE CENTRAL AREA OF A CITY

As the number of vehicles increases, the task of providing parking places is becoming more and more difficult. The project aims at designing underground parking and decongesting traffic in a crowded area of Rm.Valcea. Why is there an underground parking needed? The necessity of this parking is due to the lack of sufficient parking spaces in the central area of the city, but also to the need to redevelop the area in terms of urban planning. The foundation of the location of this underground car park in the central area was made in the present paper by the analysis of the road traffic flow and of the road infrastructure.

Keywords: road traffic optimization, design of parking lots

Cuvinte cheie: optimizare trafic rutier, proiectare parcaje

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35-34 ANALIZA FUNCŢIONALĂ – INSTRUMENT OPERAŢIONAL ÎN INDUSTRIA AUTO

Această intrare a fost publicată în 2019 Volumul 35 și etichetată Gina-Maria MORARU Liliana Georgeta POPESCU la de

FUNCTIONAL ANALYSIS – OPERATIONAL TOOL IN AUTOMOTIVE INDUSTRY

This paper presents an example of improvement of an existing product following the first stages of the product life cycle. Based on the knowledge of the principles that govern product functionality, the design of a car seat can be improved by replacing some components with others that are smarter, more diversified, dependable, and low-cost.

Keywords: function, analysis, auto, chair

Cuvinte cheie: funcţie, analiză, auto, scaun

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35-35 STUDIUL INFLUENȚEI COMPORTAMENTULUI DINAMIC PENTRU O INSTALAȚIE DE AMBUTISARE A ELEMENTELOR DE TABLĂ PENTRU INDUSTRIA AUTOVEHICULELOR

Această intrare a fost publicată în 2019 Volumul 35 și etichetată Kerekes SZABOLCS la de

STUDY OF THE INFLUENCE OF THE DYNAMIC BEHAVIOR FOR SHEET METAL EMBOSSING INSTALLATION FOR THE AUTOMOTIVE INDUSTRY

In the first part of this study there are presented general aspects regarding the sheet metal that provides a car’s chassis and body. In the second part there is presented the embossing process and the embossing installation used for car body manufacturing. In the third part there is presented a simple model for sheet metal embossing and the results during its simulation.

Keywords: sheet metal, car body, embossing, vehicle, deformation

Cuvinte cheie: tablă de metal, caroserie, ambutisare, vehicul, deformare

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35-36 ANALIZA STRUCTURALĂ ȘI MODALĂ ASUPRA UNUI LIMITATOR DE VITEZĂ INTELIGENT PENTRU ALEGEREA MATERIALULUI OPTIM

Această intrare a fost publicată în 2019 Volumul 35 și etichetată Mihai REBREANU la de

THE STRUCTURAL AND MODAL ANALYSIS OF AN INTELLIGENT SPEED BUMP FOR CHOOSING THE SUITABLE MATERIAL

This study has the purpose of giving information related to the structural resistence of the speed bump elements while being tested in a virtual finite element analysis simulation with real world data scenario. The tests consists of two types: stress and modal frequency calculation. The test subjects were the two main elements of the assembly: the fixed central part; the sliding element. There are two materails that have been considered for this test, namely: Peek plastic and steel.

Keywords: finite element analysis, simulation, intelligent speed bump, innovative, traffic, public road, testing, material, Peek plastics, Internet of Things

Cuvinte cheie: analiza cu element finit, simulare, limitator de viteza inteligent, inovativ,trafic, drum public, testare, material, plastic Peek, Internet of Things

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35-37 INTERFAȚA GRAFICĂ MOTEC I2 STANDARD RALLY

Această intrare a fost publicată în 2019 Volumul 35 și etichetată Andrei-Septimiu MOLDOVAN Daniel-Liviu JOVREA Iosif FERENTI Septimiu JOVREA la de

GRAPHICAL INTERFACE MOTEC I2 STANDARD RALLY

The present scientific paper outlines a practical installation on the electronic management system targeted to graphically represent important data packages acquired through scanning the operational engine. Graphical interface MoTeC i2 Standard Rally offers the possibility of an all in one representation module in the Subaru Rally Cars. Studying the available data package from the engine’s auxiliary systems like engine temperature, air temperature inlet, coolant temperature and others will allow the engineer crew to adjust the powertrain for best performance and economy ratio.

Keywords: fuel economy, MoTeC, performance, Subaru

Cuvinte cheie: economie de combustibil, MoTeC, performanță, Subaru

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35-38 FORȚE MAXIME DE FRÂNARE LA TOYOTA AVENSIS

Această intrare a fost publicată în 2019 Volumul 35 și etichetată Adela BORZAN Andrei-Septimiu MOLDOVAN Septimiu JOVREA la de

MAXIMUM BRAKING FORCES ON TOYOTA AVENSIS

The present research outlines a practical testing on the auxiliary car system in braking procedure aimed to record and represent experimental data packages gained through measurement in the operational regime. Measuring the braking systems concerning the maximum forces developed in operation offers real data for comparison. Researching the testing parameters from the braking auxiliary systems like maximum braking force, stationary braking, braking differences and braking forces on each axles will allow the engineers to adjust the systems for best performance and less unnecessary friction values.

Keywords: Avensis, braking, force, safety, Toyota

Cuvinte cheie: Avensis, frânare, forță, siguranță, Toyota

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35-39 STUDIUL EFECTULUI VIBRAȚIILOR ASUPRA DEFORMĂRII DISCULUI DE FRÂNĂ ÎN TIMPUL FRÂNĂRII BRUȘTE PRIN UTILIZAREA INSTRUMENTELOR CAD

Această intrare a fost publicată în 2019 Volumul 35 și etichetată Andreas SITAR la de

STUDY OF VIBRATIONS ON BRAKE DISK DEFORMATION DURING SUDDEN BRAKING BY USING CAD TOOLS

This paper is dedicated to those students who are in an early stage in the Noise Vibration Harshness (NVH) discipline. In this paper we study the effect of vibrations on the deformation of the rotor of a car brake disk in the event of sudden braking. Since the brake disk is often subjected to extreme conditions, in addition to vibration simulation, it has been decided that it is useful to carry out an additional study, namely a static one in which the pressure and force parameters are taken into account to see the potential deformations of the rotor. These parameters simulate the pressing of the brake pads on the surface of the rotor. The paper begins with the definition of basic terms, then presents a logical scheme of actions and finally illustrates the result of the simulations, as well as suggestions for the continuation of the study.

Keywords: NVH, vibration, harmonic study, static study, SolidWorks simulation

Cuvinte cheie: NVH, vibrații, studiu armonic, studiu static, SolidWorks simulation

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35-40 CERCETAREA OPACITĂȚII ȘI CONSUMULUI LA DACIA SANDERO 1.5 DCI FĂRĂ EGR

Această intrare a fost publicată în 2019 Volumul 35 și etichetată Lucian-Vasile CRIȘAN-LUPA Septimiu JOVREA Tamás Walter FLESCH la de

RESEARCH OF OPACITY AND CONSUMPTION AT DACIA SANDERO 1.5 DCI WITHOUT EGR

The study of pollutant emissions, especially of the Dacia Sandero 1.5 dCi passenger car at different operating regimes was developed by monitoring the fuel consumption. The introduction of the study is concerned about pollution, the environmental problem which is met every day. Pollution is about emitting in the surrounding environment chemical components which may lead to the structural imbalance between various life forms, which impacts health and comfort at all levels and causes ambient damage by altering natural and life sustaining factors. Different types of pollution do manifest continuously. First of all the air pollution from automobiles is the most important and analyzed in this study. In it is also considered the ecological design approach of most cars. Another section of the study makes a brief history of the internal combustion engines and their improvement process taking into account the pollutant emissions. Further in the study a comprehensive step is about the evolution of the chemical pollution. Last but not least is a description of the devices for measuring the pollutant emissions of cars. Another chapter enumerates and defines the filters, equipment and systems applied in engine development to meet increasingly stringent pollution standards. The study also contains the experimental part of the work. In this part is presented the measuring system used and then the results acquired from the Dacia Sandero 1.5 dCi engine, by monitoring the variation in the opacity of the exhaust smoke and the evolution of fuel consumption in different engine operating regimes. The last part of the study contains the final conclusions and proposed development perspectives.
Keywords: carbon emission, exhaust, gases, pollution, Sandero

Cuvinte cheie: emisii de carbon, eșapament, gaze, poluare, Sandero

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35-41 CERCETAREA OPACITĂȚII ȘI CONSUMULUI LA DACIA SANDERO 1.5 DCI FĂRĂ UN INJECTOR

Această intrare a fost publicată în 2019 Volumul 35 și etichetată Liviu-Daniel JOVREA Septimiu JOVREA Tamás Walter FLESCH la de

RESEARCH OF OPACITY AND CONSUMPTION AT DACIA SANDERO 1.5 DCI WITHOUT AN INJECTOR

The study of opacity, in particular for Dacia Sandero 1.5 dCi compression ignited engine in two distinctive operating circumstances was developed by monitoring the exhaust emission and fuel flow with and without an injector failure. The first part of the research is focused on Sandero presentation and its relation with environmental pollution. The last improvements and optimizations of the car are conducted toward the increased performance and efficiency of the car’s operation. The opacity is one of the most important pollution aspects from compression ignited engines. Its effects on the environment are great and significant. It is also analyzed the ecological and dynamic design of the studied car. The present study makes a brief analyze of the available literature on the problem of emissions and consumption. The engine’s improvement and the optimization process should take into account the pollutant emissions and the real source. Last but not least there is a study of vehicle structure, of the common-rail injection system with specific devices for the pollutant emissions control on the investigated car. The paper also presents the applied or the practical part of the research work. In this part the most interesting aspect are the experimental data acquired during the practical measurements in operation, when it is managed the data package and the graphical representation of the results from Dacia Sandero 1.5 dCi engine. This was achieved by monitoring the variation of the exhaust opacity and the fuel consumption level in operating conditions. The study ends with conclusions, observations and predefined development directions.
Keywords: carbon deposits, engine, injection, opacity, pollution

Cuvinte cheie: depozite de carbon, motor, injecție, opacitate, poluare

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35-42 CERCETAREA ECONOMICITĂȚII LIMUZINEI MERCEDES E CLASS COUPE ÎN EXPLOATARE

Această intrare a fost publicată în 2019 Volumul 35 și etichetată Daniel-Liviu JOVREA Lucian-Vasile CRIȘAN-LUPA Septimiu JOVREA la de

RESEARCHING THE ECONOMY OF MERCEDES E CLASS COUPE LIMO IN OPERATION

The present scientific work defines a practical development on the digital data packages aquired through graphical interfaces at on-board panel of Mercedes E Class Coupe. Analyzing the available data from the powertrain on the digital displays and electronic scanners leads to the definition of economy strategies in vehicle exploitation.

Keywords: Benz, eco mode, fuel economy, Mercedes E limousine

Cuvinte cheie: Benz, mod eco, economie de combustibil, limuzina Mercedes E

http://stiintasiinginerie.ro/wp-content/uploads/2020/05/42.-CERCETAREA-ECONOMICITĂȚII-LIMUZINEI-MERCEDES-E-CLASS-COUPE-ÎN-EXPLOATARE-Septimiu-JOVREA-Daniel-Liviu-JOVREA-Lucian-Vasile-CRIȘAN-LUPA.pdfDescarcare text

35-43 EVALUAREA COSTURILOR SUPLIMENTARE OCAZIONATE DE ATENUAREA NIVELULUI DE VIBRAȚII ALE UNUI AUTOMOBIL SECOND-HAND

Această intrare a fost publicată în 2019 Volumul 35 și etichetată Mihai UNGUREAN la de

THE COST ANALISYS REGARDING THE REDUCTION OF VIBRATION LEVELS IN A USED VEHICLE

This study highlights the financial impact caused by the owner’s need to reduce certain vibration levels, which can occur on a second-hand vehicle. In the same time, it presents in detail the main vibrations and noise sources on a BMW 320d – E46 and their actual market price for fixing these technical problems.

Keywords: vibration, BMW, cost, flywheel, stocks, manufacturer, loss of
value.
Cuvinte cheie: BMW, cost, devalorizare, vibrație, volantă, stoc, producător, amortizare

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35-44 STUDIUL VIBRAȚIILOR LA COLOANA DE DIRECȚIE ÎN TIMPUL INTERVENȚIEI SISTEMULUI ABS

Această intrare a fost publicată în 2019 Volumul 35 și etichetată Janos VARTEREZ-NAGY la de

STUDY OF THE STEERING COLUMN VIBRATIONS DURING THE FUNCTIONING OF THE ABS SYSTEM

The article presents a study of the vibrations of the steering column during the intervention of the ABS (Anti-lock Braking System) by pressing the brake pedal.

Keywords: vibrations, noise, braking

Cuvinte cheie: vibratii, zgomot, frânare

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35-45 STUDIUL VIBRAȚIILOR CU SCOPUL DE A RECUPERA ENERGIE DE PE CĂILE DE RULARE ALE AUTOVEHICULELOR

Această intrare a fost publicată în 2019 Volumul 35 și etichetată Edmond-Attila KELEMEN la de

STUDY OF THE VIBRATIONS IN ORDER TO HARVEST LOW-LEVEL ENERGY FROM ROADS Scientists have developed different technologies for generating electricity, but in most cases, this is achieved by using fossil fuels that can have a detrimental effect on human health and the whole ecosystem, which means global warming and changing climatic and biological balances. To avoid this, we must solve the reduction of the use of fossil fuels and find new methods of generating electricity similar to photovoltaic and wind technologies. Piezoelectric energy harvesting technology has significant advantages over other renewable energy sources such as solar or wind. Using the pressure of vehicles over the road caused by gravity, the method generates electric energy from the deformations of the paving. Although recent research projects have paid attention to this energy harvesting technology, only a few studies have been conducted on-site to determine its feasibility and economic competitiveness. No data are available about how this was realized. Therefore, it is necessary to develop a research framework that enables assessment of the technology of piezoelectric materials for this purpose.

Keywords: vibrations, energy harvesting, piezoelectric, electrical energy, roads

Cuvinte cheie: vibrații, recuperare de energie, piezoelectric, energie electrică, căi de rulare

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35-46 STUDIUL VIBRAȚIILOR ACULUI INJECTOR DE LA MOTORUL LOMBARDINI 3LD 510

Această intrare a fost publicată în 2019 Volumul 35 și etichetată Răzvan Adrian FILDAN la de

LOMBARDINI 3LD 510 INJECTION NEEDLE VIBRATION STUDY

This article presents the vibration of the injector needle that equips the Lombardini 3LD 510 compression ignition engine. In this case, three injection cases have been developed to capture as many instances of injection needle puncture. As a result, the data obtained from the simulations with the initial situation were compared.

Keywords: nozzle, Lombardini, needle, vibration Cuvinte cheie: injector, Lombardini, ac, vibrație

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35-47 STUDIUL INFLUENȚELOR VIBRAȚIILOR UNEI FREZE ÎN TIMPUL PRELUCRĂRILOR UNUI ELEMENT DE TIP PARBRIZ

Această intrare a fost publicată în 2019 Volumul 35 și etichetată Péter LEVENTE la de

STUDY THE VIBRATION EFFECTS OF A MILLING CUTTER DURING THE PROCESSING OF A WINDSCREEN ELEMENT In the first part of this study are presented general aspects regarding a component of the vehicle called windscreen. In the second part there is presented a glass manufacturing process used for glass manufacturing and subsequent processing methods. In the third part there is presented a model of a side-by-side windshield, respective results obtained and the milling methods applied in the processing of this element.

Keywords: vibration, glass, plexi, windscreen, vehicle, milling, deformation Cuvinte cheie: vibrații, sticlă, plexi, parbriz, vehicul, frezare, deformare

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35-48 STUDIUL INFLUENȚELOR TIPULUI DE MATERIAL UTILIZAT ÎN REALIZAREA SCAUNULUI PENTRU UN VEHICUL RUTIER ASUPRA NIVELULUI DE VIBRAȚII

Această intrare a fost publicată în 2019 Volumul 35 și etichetată Mihai-Vasile TURC la de

STUDY OF THE INFLUENCES OF THE TYPE OF MATERIAL USED IN MAKING THE SEAT FOR A ROAD VEHICLE ON THE VIBRATION LEVEL

This paper is a brief representation and interpretation of the specialized literature and international standards about the importance of vibrations action of a seat from road vehicle to the human body. The main subjects analyzed in this paper are the action the vibrations on the human body and the influence of the used material for the manufacturing a bicycle saddle on the vibration level. In order to manufacture a top-quality product a high level of knowledge of the bad effects of vibrations on the human body is required. By studying these aspects, we can obtain a part with an optimized structure both from a technical point of view, as well as from a medical point of view.

Keywords: vibrations, bicycle saddle, whole body vibrations Cuvinte cheie: vibrații, șa de bicicletă, vibrații asupra întregului corp

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35-49 STUDII PRIVITOARE LA INFLUENȚA BIOCOMBUSTIBILILOR UTILIZAȚI ÎN MOTOARELE CU APRINDERE PRIN COMPRIMARE ASUPRA NIVELULUI DE ZGOMOT ȘI VIBRAȚII

Această intrare a fost publicată în 2019 Volumul 35 și etichetată Stelian Viorel REVNIC la de

STUDIES RELATED TO INFLUENCE OF BIOFUELS USED IN COMPRESION IGNITION ENGINE ON SOUND LEVEL AND VIBRATION

Biodiesel is an alternative fuel which can be used in place of diesel in compresion ignition engines either in pure form or by blending it with diesel fuel. Biodiesel is a renewable fuel that is produced from vegetable oils and fat tissues. One of advantage of biodiesel is its less pollution in comparison with diesel fuels. The purpose of this study is to realise an overview, from specialized literature, related to vibro-acoustic behaviour for diesel engine using conventional diesel, biodiesel and its blends. The main goal was to present the fuel with minimum sound and vibration level.

Keywords: biodiesel, sound level, vibrations, noise pollution Cuvinte cheie: biodiesel, zgomot, vibrații, poluare sonoră

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35-50 STUDIUL MANAGEMENTULUI DE ZGOMOT AL SISTEMULUI DE RĂCIRE AL AUTOVEHICULELOR

Această intrare a fost publicată în 2019 Volumul 35 și etichetată Thomas BUIDIN la de

NOISE MANAGEMENT STUDY OF A CAR’S COOLING SYSTEM

The article presents a comparative study of four radiator fans with different blade numbers. The four simulations were conducted at different speeds for each fan, in such a way, that the tonal noise caused by the blade passing frequency has the same value in each case. As a result, the discharged air flow rates of the four fans were analyzed and compared.

Keywords: fan, blade passing frequency, air velocity Cuvinte cheie: ventilator, frecvență de trecere a paletelor, viteză aer

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35-52 HUMAN BIOMETRICS AND BIOMETRIC RECOGNITION SYSTEMS; AN OVERVIEW

Această intrare a fost publicată în 2019 Volumul 35 și etichetată Ahmed AK. TAHIR Steluța ANGHELUȘ la de

BIOMETRICA UMANĂ ȘI SISTEMELE DE RECUNOȘTERI BIOMETRICE; O IMAGINE DE ANSAMBLU

Biometric technology is gaining a significant role in presenting the solutions for many issues in various applications that demands person identification such as forensic science, security, finance affairs, border checking and government ministries and offices. It is defined as the technology of analyzing physiological and behavioral traits such as face, fingerprint, iris, retina, voice, and signature etc., for person identification and authorization. Nowadays, lots of research works are carrying out to accomplish biometric recognition systems based on various types of human traits. To provide a comprehensive survey, this paper presents an overview to five biometric traits (iris, fingerprints, face, voice and signature). The overview will cover the way of acquisition, application area, methods of implementation, strength/weakness, and system evaluation.

Keywords: Biometrics, Biometric Recognition System, iris, Fingerprints, Finger Vein, Palm Vein, Face Recognition, Gait Recognition, Human Traits, Voice Recognition, Signature Recognition Cuvinte cheie: Biometrie, Sistem de recunoaștere biometrică, iris, amprente, vene de deget, vena palmei, recunoaștere a feței, recunoaștere a trecerii, trăsături umane, recunoaștere vocală, recunoaștere semnătură

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35-53 PERSPECTIVE INGINEREȘTI IMPRESIONANTE Partea I-a Mircea BEJAN, Ioana BĂLAN, Barbu BEJAN, Ioan VIDICAN, Ioan Aurel CHERECHEȘ

Această intrare a fost publicată în 2019 Volumul 35 și etichetată Barbu BEJAN Ioan VIDICAN Ioana BĂLAN Mircea BEJAN la de

PERSPECTIVE IMPRESSIVE ENGINEERS – Part I

Over the past 150 years technology has advanced more than ever predicted history of technology. For example, 3D prototyping / printing has become a widely-appreciated and widely used phenomenon. This is a simple and fast manufacturing process, a technique that allows engineers to overcome certain design difficulties in just a few hours, compared to a few weeks that would take traditional methods. Through this technology, engineering sciences, design and technical research are undergoing transformation and the special materials industry will open up a huge fan of possibilities. With 3D technology, an idea goes directly from the design phase to the execution phase, escalating beyond the traditional stages of product manufacturing. The paper systemizes some of the major 3D printing technologies, presenting tabular, focusing on the advantages, disadvantages and application domains of these technologies. And in Romania, the prospect of expanding the home use of 3D printers open to prosumerators (users acting both as producers and consumers). The 3D equipment maker will create the right legal framework for the commercialization of 3D technology only compatible with the processing of non-hazardous materials. The 3D printer user will be granted access to a type of 3D technology limited by software specifically designed by manufacturers for civil use. And so with the advent of this technology, a new chapter in jurisprudence will soon be written in Romania. But until then, Romania is only taking the first steps in this area.

Keywords: 3D prototyping/printing, FDM-Thermoplastic Extrusion Modeling, SLA-Stereolithography, DLP-Digital Light Exposure, SLS-Selective
Laser Sintering, Laser-SLM-Melting, 3DP- Laminated Layer Manufacturing, PolyJet PJP Printing with Photopolymers, 3D Printed House Construction

Cuvinte cheie: prototiparea/printarea 3D, FDM–Modelare prin Extrudare Termoplastică, SLA–Stereolitografie, DLP–Expunerea digitală a luminii, SLS– Sinterizare Laser Selectivă, SLM–Sinterizare (Topire) Laser a Metalelor, 3DP– Printare inkjet tridimensională, LOM–Fabricare Stratificată prin Laminare, PJP– Printare PolyJet cu Fotopolimeri, construcții de case imprimate 3D

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35-54 PERSPECTIVE INGINEREȘTI IMPRESIONANTE Partea a II-a Mircea BEJAN, Ioana BĂLAN, Barbu BEJAN, Ioan VIDICAN, Ioan Aurel CHERECHEȘ

Această intrare a fost publicată în 2019 Volumul 35 și etichetată Barbu BEJAN Ioan VIDICAN Ioana BĂLAN Mircea BEJAN la de

PERSPECTIVE IMPRESSIVE ENGINEERS – Part II

Over the past 150 years technology has advanced more than ever predicted history of technology. For example, 3D prototyping / printing has become a widely-appreciated and widely used phenomenon. This is a simple and fast manufacturing process, a technique that allows engineers to overcome certain design difficulties in just a few hours, compared to a few weeks that would take traditional methods. Through this technology, engineering sciences, design and technical research are undergoing transformation and the special materials industry will open up a huge fan of possibilities. With 3D technology, an idea goes directly from the design phase to the execution phase, escalating beyond the traditional stages of product manufacturing. The paper systemizes some of the major 3D printing technologies, presenting tabular, focusing on the advantages, disadvantages and application domains of these technologies. And in Romania, the prospect of expanding the home use of 3D printers open to prosumerators (users acting both as producers and consumers). The 3D equipment maker will create the right legal framework for the commercialization of 3D technology only compatible with the processing of non-hazardous materials. The 3D printer user will be granted access to a type of 3D technology limited by software specifically designed by manufacturers for civil use. And so with the advent of this technology, a new chapter in jurisprudence will soon be written in Romania. But until then, Romania is only taking the first steps in this area.

Keywords: 3D prototyping/printing, FDM-Thermoplastic Extrusion Modeling, SLA-Stereolithography, DLP-Digital Light Exposure, SLS-Selective
Laser Sintering, Laser-SLM-Melting, 3DP- Laminated Layer Manufacturing, PolyJet PJP Printing with Photopolymers, 3D Printed House Construction

Cuvinte cheie: prototiparea/printarea 3D, FDM–Modelare prin Extrudare Termoplastică, SLA–Stereolitografie, DLP–Expunerea digitală a luminii, SLS– Sinterizare Laser Selectivă, SLM–Sinterizare (Topire) Laser a Metalelor, 3DP– Printare inkjet tridimensională, LOM–Fabricare Stratificată prin Laminare, PJP– Printare PolyJet cu Fotopolimeri, construcții de case imprimate 3D

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35-55 PERSPECTIVE INGINEREȘTI IMPRESIONANTE Partea a III-a

Această intrare a fost publicată în 2019 Volumul 35 și etichetată Barbu BEJAN Ioan VIDICAN Ioana BĂLAN Mircea BEJAN la de

PERSPECTIVE IMPRESSIVE ENGINEERS – Part III

Over the past 150 years technology has advanced more than ever predicted history of technology. For example, 3D prototyping / printing has become a widely-appreciated and widely used phenomenon. This is a simple and fast manufacturing process, a technique that allows engineers to overcome certain design difficulties in just a few hours, compared to a few weeks that would take traditional methods. Through this technology, engineering sciences, design and technical research are undergoing transformation and the special materials industry will open up a huge fan of possibilities. With 3D technology, an idea goes directly from the design phase to the execution phase, escalating beyond the traditional stages of product manufacturing. The paper systemizes some of the major 3D printing technologies, presenting tabular, focusing on the advantages, disadvantages and application domains of these technologies. And in Romania, the prospect of expanding the home use of 3D printers open to prosumerators (users acting both as producers and consumers). The 3D equipment maker will create the right legal framework for the commercialization of 3D technology only compatible with the processing of non-hazardous materials. The 3D printer user will be granted access to a type of 3D technology limited by software specifically designed by manufacturers for civil use. And so with the advent of this technology, a new chapter in jurisprudence will soon be written in Romania. But until then, Romania is only taking the first steps in this area.

Keywords: 3D prototyping/printing, FDM-Thermoplastic Extrusion Modeling, SLA-Stereolithography, DLP-Digital Light Exposure, SLS-Selective
Laser Sintering, Laser-SLM-Melting, 3DP- Laminated Layer Manufacturing, PolyJet PJP Printing with Photopolymers, 3D Printed House Construction

Cuvinte cheie: prototiparea/printarea 3D, FDM–Modelare prin Extrudare Termoplastică, SLA–Stereolitografie, DLP–Expunerea digitală a luminii, SLS– Sinterizare Laser Selectivă, SLM–Sinterizare (Topire) Laser a Metalelor, 3DP– Printare inkjet tridimensională, LOM–Fabricare Stratificată prin Laminare, PJP– Printare PolyJet cu Fotopolimeri, construcții de case imprimate 3D

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35-56 ANALIZA COMPLEXITĂȚII UTILIZÂND ELEMENTE NELINIARE DE TIP DIODĂ LAMBDA

Această intrare a fost publicată în 2019 Volumul 35 și etichetată George MAHALU la de

COMPLEXITY ANALYSIS USING LAMBDA DIODE NONLINEAR ELEMENTS

This work paper treats the analyse of using lambda diode like a nonlinear element in the Chua’s circuit configuration. One other target is testing ways to transform the lambda diode in one nonlinear controled devices.

Keywords: system, chaos, signal, nonlinear element Cuvinte cheie: sistem, haos, semnal, element neliniar

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35-57 ANALIZA COMPLEXITĂȚII UTILIZÂND ELEMENTE NELINIARE DE TIP DIODĂ CHUA

Această intrare a fost publicată în 2019 Volumul 35 și etichetată George MAHALU la de

COMPLEXITY ANALYSIS USING CHUA DIODE NONLINEAR ELEMENTS

This paper work treats the inter-systemic simulation between the Chua circuit and other systems with similar behavior. Like a sugestive example is presented by the Lorenz’s system and it is made the interpretation of similitude between the two physic systems.

Keywords: system, chaos, signal, nonlinear element Cuvinte cheie: sistem, haos, semnal, element neliniar

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35-58 PERCEPȚIE SUBLIMINALĂ ȘI FACTORI EXTERNI ÎN RECLAMELE DE TELEVIZIUNE

Această intrare a fost publicată în 2019 Volumul 35 și etichetată Maria HUMIȚA Nicoleta COJOCARIU Patricia Simona LUP la de

SUBLIMINAL PERCEPTION AND EXTERNAL FACTORS IN TV COMMERCIALS

       In this paper we examined the subliminal perception of exposure to TV commercials and identified which variables cause consumers to take the buying decision. We conducted an experiment that highlighted the fact that, besides the subliminal perception of advertisements, external factors have an important role. By the descriptive method we have highlighted the mechanisms that contribute to the positive perception of the brand. Novelty is precisely the extension of this concept of subliminal advertisements in the cognitive field, in the processing of information and in behavioral change as a result of exposure to TV commercials and external factors.

Keywords: subliminal perception, external factors, TV commercials, brand perception Cuvinte cheie: percepția subliminală, factorii externi, reclamele TV, percepția mărcii

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35-59 ÎMBUNĂTĂȚIREA CITIRII ÎN PLANUL TIMPFRECVENȚĂ A SEMNALELOR FOLOSITE PENTRU A DETERMINA COEFICIENTUL DE RIGIDITATE DINAMIC

Această intrare a fost publicată în 2019 Volumul 35 și etichetată Vasile IANCU la de

IMPROVING THE TIME-FREQUENCY READING OF THE SIGNALS USED TO DETERMINE THE DYNAMIC STIFFNESS COEFFICIENT

The objective of the paper is to describe and determine the Fourier transform to define a passage relation of a signal from the time domain to a frequency domain. The process allows the identification of frequencies but does not provide complete information about the behavior of the system, in the sense that it does not allow the interpretation of frequency evolution over time. For this reason, I propose the use of time-frequency analysis.

Keywords: reading, signal, time-frequency, stiffness Cuvinte cheie: citire, semnal, timp-frecvență, rigiditate

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35-60 INTERNETUL CA FENOMEN MEMETIC

Această intrare a fost publicată în 2019 Volumul 35 și etichetată Ionel DUMISTRĂCEL Marilena Carmen MAHALU la de

THE INTERNET LIKE MEME PHENOMENON

This paper presents the impact of WWW technology into social media with effect in real life, talking about a virtual interrelation between the social partners. Like in biological area, were the gene is the main replicator unity, same thing in cultural area being the meme. So is natural to be developed an evolutionary theory based on the memes, following the Darwin’s evolutionary theory line.

Keywords: evolutionary theory, gene, meme, Internet, WWW Cuvinte cheie: teoria evoluționistă, genă, memă, Internet, WWW

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35-61 ASPECTE PRIVIND UTILIZAREA ENERGIEI SOLARE Partea I

Această intrare a fost publicată în 2019 Volumul 35 și etichetată Barbu BEJAN Daniel Gheorghe LAKATOS Ioan Aurel CHERECHEȘ Ioan VIDICAN Ioana BĂLAN Mircea BEJAN la de

ASPECTS ON THE USE OF SOLAR ENERGY – Part I

Most human activities, the size, volume and quality of goods and services available to mankind are energy dependent, with energy playing a central role in human existence, being the most important resource. At present, fossil fuel carriers are the fuel of the world economy, and humanity is geared towards using abundant energy at a relatively low price. Alternative sources such as sun, wind, hydropower, wave energy, geothermal energy, bioenergy etc. it is practically not consumed, calling it renewable (alternative or unconventional sources). They produce far fewer emissions, reduce chemical, thermal, and radioactive pollution, and are available theoretically anywhere in the world. The sun is a real blessing, giving us in an hour – enough energy for all people to use it for one year. Every day, about 120,000 terawatts (TW) of electrical power is offered to us by the sun. That, while over a year, the world uses only 15 TW of energy. The paper analyzes some aspects regarding the use of solar energy: collectors, solar power stations, solar houses.

Keywords: solar energy, types of renewable energy, history, heat fluxes, energy radiation, solar collector, nuclear energy Cuvinte cheie: energie solară, tipuri de energii regenerabile, istoric, fluxuri termice, radiaţii energetice, colector solar, energie nucleară

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35-62 ASPECTE PRIVIND UTILIZAREA ENERGIEI SOLARE Partea a II-a

Această intrare a fost publicată în 2019 Volumul 35 și etichetată Barbu BEJAN Ioan Aurel CHERECHEȘ Ioan VIDICAN Ioana BĂLAN Mircea BEJAN la de

ASPECTS ON THE USE OF SOLAR ENERGY – Part II

Most human activities, the size, volume and quality of goods and services available to mankind are energy dependent, with energy playing a central role in human existence, being the most important resource. At present, fossil fuel carriers are the fuel of the world economy, and humanity is geared towards using abundant energy at a relatively low price. Alternative sources such as sun, wind, hydropower, wave energy, geothermal energy, bioenergy etc. it is practically not consumed, calling it renewable (alternative or unconventional sources). They produce far fewer emissions, reduce chemical, thermal, and radioactive pollution, and are available theoretically anywhere in the world. The sun is a real blessing, giving us in an hour – enough energy for all people to use it for one year. Every day, about 120,000 terawatts (TW) of electrical power is offered to us by the sun. That, while over a year, the world uses only 15 TW of energy. The paper analyzes some aspects regarding the use of solar energy: collectors, solar power stations, solar houses.

Keywords: solar energy, types of renewable energy, history, heat fluxes, energy radiation, solar collector, nuclear energy Cuvinte cheie: energie solară, tipuri de energii regenerabile, istoric, fluxuri termice, radiaţii energetice, colector solar, energie nucleară

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35-63 CONSIDERAȚII ASUPRA ENERGIILOR REGENERABILE – ENERGIA SOLARĂ

Această intrare a fost publicată în 2019 Volumul 35 și etichetată Ioan Aurel CHERECHEȘ Ioan VIDICAN Mircea BEJAN la de

CONSIDERATIONS ON RENEWABLE ENERGY – SOLAR ENERGY

This paper briefly describes the main renewable energies on our planet. It also describes the solar energy used for the preparation of hot water and the heating of homes. Last but not least, the transformation of solar energy into electricity required for home appliances in a home such as telephones, lighting, television, etc.

Keywords: solar energy, electricity, hot water, solar panel Cuvinte cheie: energie solară, energie electrică, apă caldă, panou solar

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35-64 PILELE DE COMBUSTIBIL – SOLUȚIE TEHNOLOGICĂ DE COGENERARE A ENERGIEI

Această intrare a fost publicată în 2019 Volumul 35 și etichetată Cristina Daniela HORJU-DEAC la de

FUEL FILES – TECHNOLOGICAL SOLUTION COGENERING OF ENERGY

In a simple and usual manner, the consumer covers the necessary of heat and electricity from one’s own boiler with fossil fuel, respectively by buying electric energy from system. When a request of thermal and electric energy occurs, the simultaneous production of both types of energy is more efficient, with the same type of equipment, rather than producing them separately. CHP, as a combined and simultaneously solution to produce electric and thermal energy, based on the fuel cell technology, by its energetic, economic and ecological advantages, it is part of the “clean” technologies category to produce energy.

Keywords: CHP, fuel cells, hydrogen Cuvinte cheie: cogenerare, pile de combustibil, hidrogen

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35-65 MIŞCAREA FLUIDELOR PRIN EJECTOARE. APLICAȚII ÎN CONSTRUCȚIA RACHETELOR

Această intrare a fost publicată în 2019 Volumul 35 și etichetată Constantin AVĂDANEI la de

FLUID MOVEMENT THROUGH THE EJECTORS MISSILE BUILDINGS ENGINEERING APLICATIONS

This paper presents some features of evolutionary parameters on fluid flow through the ejector gaso dynamics. Ejectors are devices with wide applicability gaso dynamics in the technical field and especially in the military.

Keywords: ejector, rocket, blending chamber, gas dynamics parameters, ejection coefficient, trained fluid, drive fluid Cuvinte cheie: ejector, rachetă, cameră de amestec, parametri gazodinamici, coeficient de ejectie, fluid antrenat, fluid de antrenare

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35-66 MEDIUL VIBRAŢIONALPRODUS DE UTILAJELE DIN INDUSTRIA ALIMENTARǍ CU ACŢIUNE ASUPRA OPERATORULUI UMAN

Această intrare a fost publicată în 2019 Volumul 35 și etichetată Alexandra-Maria MACOVEI Mariana ARGHIR la de

VIBRATION ENVIRONMENT PRODUCED BY FOOD INDUSTRY WITH ACTION ON HUMAN OPERATOR

The grinding of cereals and other grains began to be practiced from the Neolithic, with the appearance of the first stones moths, evolving extremely rapidly in modern times to the present complex milling facilities. Milling is aimed at shredding and transforming grain and some legumes into flour and wheat. As a percentage, wheat occupies the first place in milling, the most common species being common wheat.

Key words: mill, grinding, vibration, grain, food industry Cuvinte cheie: moară , măcinare, vibrații, cereale, industrie alimentară

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35-67 PROTOTIPAREA RAPIDĂ LA SCARĂ UTILIZÂND KITUL EDUCAŢIONAL LEGO MINDSTORMS NXT

Această intrare a fost publicată în 2019 Volumul 35 și etichetată Alexandru Cătălin MICACIU la de

RAPID PROTOTYPING SCALE USING LEGO MINDSTORMS NXT EDUCATIONAL KIT

The main objectives of the paper aim to familiarize them with the concept of rapid prototyping scale and mechatronic modules, or components LEGO Mindstorms. Theoretical aspects are presented since their encounter in practical applications. Resorting to progressive design functionality using graphical programming means NXT-G, as the mechanical structure is built to foster interdisciplinary thinking specific mechatronics.

Keywords: rapid prototyping, programming means, reconfigurability, mechatronics platform, sensor, actuator, controller Cuvinte cheie: prototipuri rapide, mijloace de programare, reconfigurabilitate, platformă mecatronică, senzor, actuator, controler

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35-68 APLICAȚII LA PROTOTIPAREA RAPIDĂ LA SCARĂ UTILIZÂND KITUL EDUCAŢIONAL LEGO MINDSTORMS NXT

Această intrare a fost publicată în 2019 Volumul 35 și etichetată Dorin SCÂNTEIE la de

APPLICATIONS TO RAPID PROTOTYPING SCALE USING LEGO MINDSTORMS NXT EDUCATIONAL KIT

The paper is dedicated to the succinct presentation of the mechatronic concepts needed to promote innovation, creativity and interdisciplinarity. The main objectives of the paper aim to familiarize them with the concept of rapid prototyping scale and mechatronic modules, with components LEGO Mindstorms. The first application is made using the course-related instructions. In the second application, we performed a functional replica of a given structure (with a minimum of elements), without detailed installation instructions.

Keywords: rapid prototype, programming means, sensor, actuator, controller, mechatronic platform, reconfigurability Cuvinte cheie: prototip rapid, mijloace de programare, senzor, actuator, controler, platformă mecatronică, reconfigurabilitate

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35-69 ASPECTE PRIVIND REABILITAREA-MODERNIZAREA INSTALAŢIEI DE ILUMINAT DINTR-UN ATELIER DE MECANICĂ AUTO

Această intrare a fost publicată în 2019 Volumul 35 și etichetată Bogdan PASCU Emilia DOBRIN Ştefan PAVEL la de

ASPECTS REGARDING THE REHABILITATIONMODERNIZATION OF THE LIGHTING FACILITY OF AN AUTO MECHANICAL ENGINEER

The modernization of the general and local artificial lighting system in a workshop of motor mechanics is an important element in the development of professional activity in this field.

Keyboard: General artificial lighting, local lighting, auto mechanic workshop Cuvinte cheie: Iluminat artificial general, iluminat local, atelier mecanic auto

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35-70 STUDIUL PRIVIND VERIFICAREA TANGENTEI δ A ULEIULUI ELECTROIZOLANT

Această intrare a fost publicată în 2019 Volumul 35 și etichetată Florentina FARCAȘ Irina CHERA ANGHEL la de

STUDY ON VERIFICATION OF TANGES DATES OF INSULATING OIL

The paper presents a study regarding the determination of the dielectric loss factor of the insulating oils at the filling of the power transformers. This study is complemented by: electrical equipment for determination of tg δ, mode of execution of the test, interpretation of the results. The purpose of this case study is to evaluate the electro-insulating state in order to standardize the apparatus and the adopted measurement methods in order to obtain reproducible results and to make a decision on replacement, refurbishment by filtration, drying.

Keywords: Tanges, insulating oil, transformer, verification Cuvinte cheie: tangentă, ulei electroizolant, transformator, verificare

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35-71 STUDIUL ECHILIBRULUI ŞI STABILITĂŢII OCUPANTULUI UNEI PLATFORME ÎN MIŞCARE

Această intrare a fost publicată în 2019 Volumul 35 și etichetată Denis-Alex ALBUŞ Mariana ARGHIR la de

STUDY OF EQILIBRIUIM AND STABILITY FOR THE PERSON ON THE PLATFORM IN MOTION

The paper contains a short study of the equilibrium and stability in motion for a person who is on the mobile platform. This study is necessary to optain the adaptiv possibility of any person if the support of walking is in monition for this was used a platform named HUBER 360 MD. Was relializes a lot of 6 tests in following steps: stability, unipodal test, walking test, stability limited test, mobility restricted test, power test.

Key words: balance study, stability study, mobile platform Cuvinte cheie: studiul echilibrului, studiul stabilității, platforma mobilă

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35-72 UNELE CONSIDERAȚII PRIVIND ACOPERIRILE METALICE ELECTROCHIMICE ȘI CHIMICE

Această intrare a fost publicată în 2019 Volumul 35 și etichetată Ioan Aurel CHERECHEȘ Ioan VIDICAN Mircea BEJAN la de

SOME CONSIDERATIONS ON ELECTROCHEMICAL AND CHEMICAL METAL COVERINGS

This paper briefly presents electrochemical and chemical metallic coatings. Coatings of various parts with metallic layers is done especially for: Increasing the corrosion resistance, improving the appearance, increasing the superficial hardness, increasing the resistance to wear. Metallic coatings can be made: electrochemically, thermally, by spraying, chemically, by plating, amalgamation, by conversion, and by vacuum evaporation.

Keywords: metallic coatings, electrochemical coatings, chemical composition, nickel electrolytes, copper electrolytes Cuvinte cheie: acoperiri metalice, acoperiri electrochimice, compoziție chimică, electroliți de nichelare, electroliți de cuprare

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35-73 MANSARDARE VERSUS REABILITARE TERMICĂ

Această intrare a fost publicată în 2019 Volumul 35 și etichetată Mihai JĂDĂNEANŢ Mircea Paul SĂMÂNȚĂ la de

MERSARDARE VERSUS THERMAL REHABILITATION

This paper makes an analysis over the thermal rehabilitation process in Romania taking in consideration existing and future developments. Today’s national financing programs do not offer a sustainable answer to the CO2 emission reduction goal due to the fact that this is a punctual solution and offer small improvement for interior comfort of dwellings and energy savings.

Keywords: thermodynamics, economic viability, thermal rehabilitation Cuvinte cheie: termodinamică, viabilitate economică, reabilitare termică

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