Arhive zilnice: iulie 12, 2014


26-36 INVESTIGAREA NON-INVAZIVĂ A ZGOMOTULUI PROFESIONAL ASUPRA LUCRĂTORILOR

NON-INVASIVE INVESTIGATION OF PROFESSIONAL
NOISE OVER THE WORKERS
Ther paper introduces a new investigation method for the noise action
over the worker in the industrial field. This method consists in the ECG
evaluation of the workers that are inside the industrial space during the
professional activity. The paper presents an experimental study of the noise
action on a sample of workers of different ages. They work in an industrial
workers space with 8 different machine tools, 8 hours per day, 5 days per
week. The paper looks to establish the impairment of workers’ occupational
noise. All of them were made in the morning, and at the end of the work each
day. Comparing the results of ECG measurements, pre and post exposure to
sound level above 80 dB, may establish the risk of cardiac disease in different
form of it.
Keywords: pollution, noise, sound pollution, method noninvasive
Cuvinte cheie: poluare sonorǎ, zgomotul profesional, metoda
neinvazivǎ
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26-35 TRANSMISIBILITATEA VIBRAŢIILOR PROVOCATE DE SISTEMELE DE ACŢIONARE ŞI IZOLAREA ACESTORA

VIBRATION TRANSMISSIBILITY CAUSED BY DRIVE
SYSTEMS AND THEIR ISOLATION
The paper present capability of different materials to diminish the
transmissibility of vibrations caused by diverse machineries, in order to
increases the operational safety, protect the operators against dangerous
vibration effects and improve the equipment’s performances.
Keywords: transmissibility, sponge, polystyrene, rubber
Cuvinte cheie: transmisibilitate, burete, polistiren, cauciuc
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26-34 STUDIU TEORETIC ASUPRA APLICABILITĂŢII IMPEDANŢEI MECANICE

THEORETICAL STUDY ON THE APPLICABILITY OF
MECHANICAL IMPEDANCE
The present paper will be a presentation of the informations from
specialized literature and international standards about the importance of
mechanical impedance study for all structures including human body.
Exposure to harmful vibrations can lead to damages of the structures
and health problems or disorders that can appear at the human body.
The knowledge of the structures and human body mechanical
impedance is essential for realizing appropriate administrative, technical and
medical prevention measures.
Keywords: mechanical impedaţă mechanical vibrations, the human
hand-arm system
Cuvinte cheie: impedaţă mecanică, vibraţii mecanice, sistem uman
mână-braţ
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26-33 ALGORITM DE CALCUL PENTRU DISTRIBUȚIA DEBITELOR MASICE PRINTR-O REȚEA DE ORIFICII LATERALE A DISPOZITIVELOR GAZODINAMICE

CALCULATION ALGORITHM FOR MASS FLOW
DISTRIBUTION THROUGH A NETWORK OF SIDE HOLES
GAZODINAMICE DEVICES
The work shall be presents a mathematical model for the purpose of
calculating mass flow distribution through a network of side holes in the case of
movements martina tran movement gas jets through the devices. The model
shall take into account the effect of contraction of splashing when they pass
through the network of holes.
Keywords: device gas dynamic, mass flow device, martina tran
movement, gas jets, shock wave, the wave front, adiabatic exponent, viscosity,
potential motion
Cuvinte cheie: dispozitiv gazodinamic, debit masic, mișcare
transonică, jet de gaze, undă de șoc, front de undă, exponent adiabatic,
vâscozitate, mișcare potențială
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26-32 FENOMENE GAZODINAMICE CARE ÎNSOȚESC EXPLOZIILE ÎN MEDII LICHIDE

GAZODINAMICS PHENOMENA ACCOMPANYING
BURSTS INTO LIQUID MEDIUM
This work makes a major contribution to the interpretation of
phenomena due dynamic phenomena in gases explosions which take place in
gaseous environment. Theoretical and practical considerations provide a path
to be followed for designers and constructor’s explosive systems intended for
the aquatic environment.
Keywords: explosion, the shock wave, the wave front, adiabatic
exponent, viscosity, potential motion
Cuvinte cheie: explozie, undă de șoc, front de undă, exponent
adiabatic, vâscozitate, mișcare potențială
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26-31 CONSIDERAŢII PRIVIND STUDIUL INFLUENȚEI PERTURBAȚIILOR ATMOSFERICE ÎN CALCULUL PARAMETRILOR DE ZBOR A CORPURILOR DE REVOLUȚIE

CONSIDERATIONS ON THE STUDY OF THE INFLUENCE OF
ATMOSPHERIC DISTURBANCE IN THE CALCULATION OF
THE PARAMETERS OF THE FLIGHT OF BODIES OF
REVOLUTION
This paper presents some aspects of the study of the motions of
bodies of revolution on the flight trajectories in the atmosphere, in supersonic
mode. Results of the study allow a calculation of just as many couples and
aerodynamic forces acting on bodies of revolution during flights in the
atmosphere.
Keywords: flight trajectory, projectile, aerodynamic force,
aerodynamics, couple of supersonic motion, fluid compressible, turbulent
motion, shock wave, his Mach number
Cuvinte cheie: proiectil, traiectorie de zbor, forță aerodinamică, cuplu
aerodinamic, mișcare supersonică, fluid compresibil, mișcare turbulentă, undă
de șoc, numărul lui Mach
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26-30 ABORDAREA LOGISTICĂ A SISTEMELOR DINAMICE NELINIARE

LOGISTIC APPROACH OF THE NONLINEAR
DYNAMICAL SYSTEMS
This paper deals with the analyse of the nonlinear dynamic systems
treated under logistic map formalism. Also, a new method of chaos behaviour
investigation is treated, through the dynamic logistic map theory. Some results
of Matlab simulation analysis has been presented.
Keywords: nonlinear system, logistic map, chaos, parameter, attractor
Cuvinte cheie: sistem neliniar, hartă logistică, haos, parametru,
atractor
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26-29 EFECTELE CODOPĂRII Gd3+:Ag ASUPRA STICLELOR ŞI VITROCERAMICILOR DIN SISTEMUL (1-x-y)[Bi2O3∙PbO]∙xAg2O∙yGd2O3

EFFECT OF Gd3+: Ag CODOPING ON
THE GLASSES AND VITROCERAMICS OF THE
(1-x-y)[Bi2O3∙PbO]∙xAg2O∙yGd2O3 SYSTEM
Bismuth lead glasses coped with Gd3+: Ag were prepared by the
conventional melt – quenching method. The structure of these materials was
studied by X-ray diffraction (XRD) and FTIR spectroscopy. FTIR spectroscopy
data show that BiO3, BiO6, PbO3 and PbO4 are the most important structural
units in the studied system. These data also made it possible to obtain essential
information concerning the arrangement of the structural units in the studied
glasses and glass ceramics. XRD diffraction shows the presence of δ Bi2O3 and
PbO1.44 crystalline phases.
Keywords: bottles, vitro-ceramic, MAINLY REALISED FTIR
spectroscopy
Cuvinte cheie: sticle, vitro-ceramice, XRD, spectroscopie FTIR
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26-28 IMOBILIZAREA UNOR DEŞEURI RADIOACTIVE ÎN SISTEME VITROASE PE BAZĂ DE PLUMB

IMOBILIZATION OF THE RADIOACTIVE WASTES
IN VITREOUS SYSTEMS ON THE BASED OF LEAD
Immobilization of radioactive wastes by the vitrification method is a
well-established process that was selected because glass is highly stable, very
durable and has the ability to incorporate a wide variety of chemical
contaminants. In this work, we propose a study of the structural and behaviour
properties of lead glasses with xGd2O3∙(100-x)[4PbO2∙Pb] composition where
x=0-50%mol Gd2O3 in view of the possible applications as alternative of
immobilization of the radioactive wastes.
One of the most important requirements for the technology used in the
immobilization of nuclear wastes is to include as much as possible waste per
unit mass of the host vitreous matrix. We were synthesized the gadolinium-lead
glasses up to 50% mole Gd2O3. EPR data suggest that the gadolinium ions at
high contents have a behaviour of network former and not network modifier.
Keywords: bottles, Gadolinium-based lead, IR spectroscopy and RES,
waste
Cuvinte cheie: sticle pe bază de gadoliniu-plumb, spectroscopie IR şi
RES, deşeuri
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26-27 NOI TIPURI DE STICLE CA POTENŢIALI SENZORI PENTRU DETERMINAREA NITRAŢILOR DIN APĂ

NEW TYPES OF GLASS AS POTENTIAL SENSORS TO
DETERMINE THE NITRATES ANIONS
FROM WATER
In this paper is presented a new type of glass that can be used as
potential electrochemical sensor for nitrate anions from aqueous solutions. The
glass sample obtained was analysed by FT-IR and UV-VIS spectroscopy and
cyclic voltammetry (VC). The cyclic voltammetry shows that the current
increase with the increasing of concentration of sodium nitrate from aqueous
solutions. The FT-IR spectrum after VC shows a decreasing of [PbO6] structural
units from the glass, probably increasing in this way the number of free lead
ions (Pb+2) and improving the electrochemical properties of the glass sample.
The decrease in the intensity of the UV-VIS absorption bands after VC shows
that a part of Fe+3 ions convert to Fe+2 ions and pass into solution.
Keywords: glass, sensors, IR spectroscopy, cyclic Anodic, UV-VIS
spectroscopy, nitrates in water
Cuvinte cheie: sticlă, senzori, voltametrie ciclică, spectroscopie IR,
spectroscopie UV-VIS, nitraţi din ape
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26-26 RECICLAREA DEŞEURILOR PROVENITE DE LA BATERIILE AUTO ÎN STICLE PE BAZĂ DE PLUMB

THE RECICLYNG OF THE WASTES PROVIDED
OF AUTO BATTERIES IN LEAD GLASSES
The purpose of this paper was i) to obtained the lead glasses with the
xPb∙(100-x)PbO2 composition where x = 0-15mol % Pb by melt quenching
method and ii) to characterized of the structural and optical properties of the
obtained glasses by investigations of FTIR and UV-VIS spectroscopy in order
to possible applications in the auto battery recycling.
FTIR data show that the accommodation of the host glass with excess
of metallic lead was possible by the conversion of some [PbO6] octahedral
structural units into [PbOn] structural units where n=3 and 4. Then, the increase
of the metallic lead high content in the matrix network will produce to the
deficiency of non-bridging oxygen’s and the formation of UV-VIS bands in
region centred at about 300nm which can be attributed to the electronic
transitions of the lead ions.
Keywords: lead-based bottles, car batteries, spectroscopy UV-VIS and
IR, recycling
Cuvinte cheie: sticle pe bază de plumb, baterii auto, spectroscopie IR
şi UV-VIS, reciclare
Descarcare text


26-25 STUDII ŞI CERCETĂRI PRIVIND POLUAREA SONORĂ ÎN HALELE INDUSTRIALE

STUDIES AND RESEARCH ON NOISE POLLUTION
IN INDUSTRIAL HALLS
This paper contains studies about the noise pollution, especially, în
industrial halls and the effects on the human body. Also, it Is giving us some
methods of reducing the noise pollution.
Keywords: sound pollution, intensity, pollution effects
Cuvinte cheie: poluare sonorǎ, intensitate, efecte
Descarcare text


26-24 BARIERE FONICE PE AUTOSTRĂZI

HIGHWAYS NOISE BARRIERS
This article presents the advantages of the noise barriers on the
highways and the importance of it în the human healthy. Realization of noise
barriers is beneficial for both the inhabitants and the houses in the surroundings
of highways as well as vegetation and fauna. They have a special role and
need a very big important.
Definition. The main attribute of noise barriers is to protect
communities from pollution resulting from the soundtrack continues to climb.
Keywords: noise barrier, the threshold of audibility, design
Cuvinte cheie: barieră fonică, prag de audibilitate, design
Descarcare text


26-23 IMPACTUL VIZUAL ŞI EVALUAREA PEISAGISTICĂ A PARCURILOR EOLIENE

VISUAL IMPACT ASSESSMENT AND LANDSCAPE
WIND FARMS
There are two points of view about wind farms, one is refer to produce
energy from renewable sources, and other to reduce the impact of this
development. The visual impact of the wind farm is one of the important factors
that affects public acceptance. This paper presents a few methods of
evaluating the impact. Wind farms have a better acceptance if the number of
turbines in an area is limited, or if the turbines are kept away from observation
points.
Keywords: the Visual impact of wind parks, impact assessment
Cuvinte cheie: impactul vizual al parcurilor eoliene, evaluare impact
Descarcare text


26-22 POLUAREA MEDIULUI DETERMINATĂ DE INSTALAŢIILE ELECTRICE

ENVIRONMENTAL POLLUTION CAUSED BY THE
ELECTRICAL INSTALLATIONS
Development of industry and the growth of consumption of primary
energy, causes pollution of the environment (air, water, underground blades
etc.), so this activity causes negative effects on people’s health level and on
global climate change. Of course, without electricity cannot conceive of modern
life on Earth, but humanity must realise that the use of electricity has negative
effects on the environment in the biological environment, as well as complex
built environment. It is necessary to intensify studies and researches aimed, on
the one hand, optimizing \/lowering electricity consumption, and on the other
hand, lessening the impact of electromagnetic pollution of the environment in
the bioelectro-chemical processes of nature and the corrosion reactions in
complex environments.
Keywords: electricity, electrical installations, environmental pollution,
electromagnetic pollution, psychic pollution
Cuvinte cheie: energie electrică, instalaţii electrice, poluarea mediului,
poluare electromagnetică, poluare psihică
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26-21 STUDII ŞI CERCETĂRI PRIVIND POLUAREA FONICĂ ÎN MEDIUL INDUSTRIAL

RESEARCH AND DEVELOPMENTS ON NOISE
POLLUATION IN INDUSTRIAL ENVIRONMENTS
The document shows the importance of studying and researches the
phenomenon of noise pollution which is a current issue both internationally and
nationally, because it affects people and causes so-called occupational
diseases. But we have to consider that the main source of noise pollution is
industrial environment.
Keywords: pollution, noise, impact sound, industrial environment
Cuvinte cheie: poluare sonorǎ, impactul zgomotului, mediul industrial
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26-20 MEDIUL LOCATIV COLECTIV – ÎNTRE REGENERARE ȘI REABILITARE

COLLECTIVE DWELLING – BETWEEN REGENERATION
AND RETROFITTING
Energy efficiency has become a really important aspect of building
management. Older residential buildings cannot sustain high energy efficiency
due to lack of automatisation and depassed plumbing. This work presents an
alternative to existing energy management system for existing dwellings.
Keywords: Sustainability, Renewable energy, Housing, Rehabilitation
Cuvinte cheie: sustenabilitate, energie regenerabilă, locativ, reabilitare
Descarcare text


26-19 EFICIENŢA ENERGETICĂ ÎN CLĂDIRI

ENERGY EFFICIENCY IN BUILDINGS
Under the conditions of present society in which providing an
optimum interior comfort in buildings is confronted with the necessity of the
energy consumption reduction, solving this problem depends on the factors
which contribute to the achievements of this comfort.
Modern buildings – including teaching unit – must be equipped with
installations which have low energy consumption, respective a heating,
cooling and ventilation integrated systems with heat pumps which can
assure all the required comfort requirements.
Keywords: EPBD reviewed, sustainability, climate change, interior,
comfort, low power consumption, heat pump, integrated system of heating,
cooling and ventilation
Cuvinte cheie: EPBD revizuită, durabilitate, schimbare climatică,
confort interior, clădire, consum redus de energie, pompă de căldură, sistem
integrate de încălzire, răcire şi ventilare
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26-18 ASPECTE PRIVIND INFLUENȚA FACTORILOR ASUPRA EVALUĂRII SISTEMELOR DE TRANSPORT PRIN CONDUCTE

ASPECTS OF THE FACTORS INFLUENCE ON THE
ASSESSMENT OF PIPELINE SYSTEMS
Assessment of pipelines is a complicated process that does not use
traditional approaches to evaluation, but rather a mixture of both evaluation
methods because each pipeline is unique in its own way, but also because its
value is influenced by many factors. Depending on the chosen evaluation
method involved estimating a pipeline several factors. These factors represent
the influences the value of a pipeline from several points of view: the physical –
chemical, technological and economical.
Key words: technological pipelines, pipelines, pipeline value
assessment, factors of influence on the value
Cuvinte cheie: conducte tehnologice, evaluarea conductelor, valoarea
conductelor, factori de influență a valorii
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26-17 STADIUL ACTUAL AL CERCETĂRILOR EXPERIMENTALE EFECTUATE ASUPRA SQUATULUI NAVELOR MARITIME

CURRENT STATE OF RESEARCHES PERFORMED
ON SHIP SQUAT
In the recent years research efforts in ship hydromechanics are devoted to
the practical navigation problems in getting larger ships safely into existing
harbours, which are usually characterized by narrow and shallow waters.
This paper presents an analysis of the current state of researches on ship
squat, especially on ship models used to measure it.
Keywords: ship, squat, model, similarity
Cuvinte cheie: navă, squat, model, similitudine
Descarcare text


26-16 METODE DE ÎNDEPĂRTARE A PRODUSELOR PETROLIERE ÎN CAZUL CONTAMINĂRII ŢĂRMULUI

METHOD OF REMOVAL OF PETROLEUM PRODUCTS
IN THE EVENT OF SHORE CONTAMINATION
Currently the Black Sea water quality has become an increasing
discussed problem, which is proposed to solve in different solutions. Reality
suggests the need for increased vigilance, continuing accident early preventive
action not only when petroleum products are spilled and improving response
capacity through the integration of technology and science.
Key words: pollution, petroleum products, shore contamination
Cuvinte cheie: poluare, produse petroliere, contaminarea țărmului
Descarcare text


26-15 METODOLOGIE DE DETERMINARE A CONCENTRAȚIILOR DE PARTICULE MATERIALE DIN ATMOSFERA MUNICIPIULUI CLUJ-NAPOCA

METHODOLOGY FOR DETERMINING THE
CONCENTRATION OF PARTICULATE MATTER FROM
ATMOSPHERE IN CLUJ-NAPOCA CITY
The study presents an analysis of methods for determining particle
suspension in atmosphere for Cluj-Napoca city. It shows the sampling method
and ways how to choose areas depending on the nature of traffic sampling. It
shows the equipment used in measurements.
Keywords: Particulate matter, air pollution, determination the level of
air pollution
Cuvinte cheie: particule materiale, poluarea aerului, dereminarea
nivelului de poluare a aerului
Descarcare text


26-14 STUDII ŞI CERCETĂRI PRIVIND DETERMINAREA CALITĂȚII AERULUI DIN MUNICIPIUL CLUJ-NAPOCA

STUDIES AND RESEARCH ON DETERMINING
AIR QUALITY IN CLUJ-NAPOCA CITY
This paper presents a series analysis of pollutants from urban
environment, respective to Cluj-Napoca city. It insisted on greenhouse
gas, gas that generates acid rain, as well as particulate matters.
Measurement were analysed and centralized to see in time the
evolution of these emissions.
Keywords: air quality, factors of air polluting
Cuvinte cheie: calitatea aerului, determinarea factorilor poluanți
din atmosferă
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26-13 METODOLOGIE PENTRU DETERMINAREA CONCENTRAȚIILOR DE PARTICULE DIN ATMOSFERᾸ

METHODOLOGY FOR DETERMINING THE
CONCENTRATION OF PARTICLE IN ATMOSPHERE
This paper presents a series of results for determining air quality in
Cluj-Napoca area. The measurements were aimed primarily for determination
of particulate matter using modern equipment to determine aerosols. For
determinations were chosen areas where is intense traffic.
Keywords: particulate matter, determining aerosol, means for
determining
Cuvinte cheie: particule in suspensie, determinare aerosolilor, metode
de determinare
Descarcare text


26-12 ECO-INOVAREA – ELEMENT DE BAZĂ ÎN REALIZAREA ȚINTEI “ZERO DEȘEURI”

ECO-INNOVATION – KEY ELEMENT IN ACHIEVING THE
TARGET “ZERO WASTE”
This paper is an analysis of the need for and modalities of Eco-
Innovation in the context of achieving an ambitious goal, which is to achieve the
performance of „Zero Waste”. Although through different methods, it is
possible to significantly reduce the quantity of waste, there will always be a
certain amount of waste that can only be eliminated by means that are
damaging to the environment. The solution for this is the redesign of products
that cannot be reused, recycled or biodegradable, so that they will not have a
damaging environmental impact at the end of their life cycle. This requires Eco-
Innovation for most products and processes.
Keywords: eco-innovation, redesign, waste, zero waste, re-use,
recycle, redesign, storage, incineration
Cuvinte cheie: eco-inovare, reproiectare, deșeuri, zero deșeuri,
reutilizare, reciclare, reproiectare, depozitare, incinerare
Descarcare text


26-11 TEHNOLOGIE DE EPURARE BIOLOGICĂ CU TUBURI POROASE ŞI TUBURI CU MEMBRANĂ ELASTICĂ PERFORATĂ ȘI DIMENSIONAREA INSTALAȚIILOR DE AERARE

TECHNOLOGY FOR WASTE WATER TREATMENT WITH
POROUS TUBE AERATORS AND ELASTIC PERFORATED
MEMBRANE TUBES OF THE BIOLOGICAL
WASTE WATER TREATMENT
The paper is to review and assess existing design procedures and provide
in-depth design information on critical features of the aeration process using Tube
aerators porous and elastic membrane tubes and key parameters affecting its
operation and performance that is typically available to the engineering community.
Since past decade, the old works started to be replaced with new technologies such
as those using tube aerators porous and elastic membrane tubes, especially for
industrial and municipal waste water treatment plants. This paper discusses the
theory, performance, design procedures, calculation and dimensioning of the
aeration using Tube aerators porous and elastic membrane tubes.
Keywords: aeration, porous tubes, tubes with elastic membrane, aeration
plants, wastewater, and wastewater treatment schemes
Cuvinte cheie: aerare, tuburi poroase, tuburi cu membrana elastică, instalații
de aerare, ape uzate, scheme de epurare
Descarcare text


26-10 UTILIZAREA ADITIVILOR, UN PROCEDEU PENTRU OPTIMIZAREA STINGERII INCENDIILOR

ADDITIVES’ USE, A FIRE FIGHTING OPTIMISATION
PROCEDURE
Fire is a phenomenon that leaves, even today, a lot of questions
unanswered. The fire fighting actions currently involve many procedures and
products to increase efficiency. Additives are used nowadays, worldwide,
because they represent an alternative for preserving our resources. The result
of researches made in foreign countries, and also in Romania in the early ’80, is
a strong argument for keep trying to use additives in fire fighting.
Key words: fire, fire fighting, additives
Cuvinte cheie: foc, stingerea incendiilor, aditivi
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26-9 ASPECTE TEHNICE REFERITOARE LA PROTECȚIA ÎMPOTRIVA INCENDIILOR PENTRU PROIECTAREA FAȚADELOR CU ALCĂTUIRE VENTILATĂ

TECHNICAL ISSUES RELATING TO FIRE PROTECTION
FOR THE DESIGN DOUBLE SKIN FACADES
Usually for a building with a multi-storeys double-skin facade, smoke
of a fire room escaping through the inner facade into the intermediate space
between the two skins may accumulate and spread horizontally and/or
vertically to other rooms that have openings connected to the intermediate
space for the purpose of natural ventilation.
Keywords: thermal insulation, ventilated façade, fire, smoke,
ventilation
Cuvinte cheie: izolare termică, fațadă ventilată, incendiu, fum, ventilare
Descarcare text


26-8 CONSIDERAŢII PRIVIND OPORTUNITATEA PROGNOZEI CONSUMULUI DE GAZE NATURALE ÎN REPUBLICA MOLDOVA

CONSIDERATION ABOUT THE OPPORTUNITY OF NATURAL
GASES PROGNOSES IN THE REPUBLIC OF MOLDOVA
Of all forms of primary energy currently participating almost to
meeting energy needs in Moldova gas lies the largest share – about 60 % full
resources imported from the foreign market carriers energy. Therefore the
problem of determining, monitoring and control of natural gas consumption, and
estimate its possibilities of coverage opportunities is an actual goal, which
raged experts in the field.
Keywords: energy, monitoring, natural gas consumption,climatic
factors, reserves, energy security
Cuvinte cheie: energie, monitorizare, consumul de gaze naturale,
factorii climatici, rezerve, securitatea energetică
Descarcare text


26-7 STADIUL ACTUAL ÎN DOMENIUL EFICIENŢEI ENERGETICE DIN REPUBLICA MOLDOVA

THE CURRENT STATE IN THE FIELD OF ENERGY
EFFICIENCY IN THE REPUBLIC OF MOLDOVA
The increase in the cost of energy resources, the advanced
depreciation of the buildings, the degradation of the environmental quality and
the Moldova’s total dependence on the external energy markets, are essentially
the key arguments which require the promotion of some consistent national
policies in the field of energy efficiency in all spheres of human activity. In this
context one area over which it can act with certainty is the field of buildings. The
analysis of housing in Moldova built at different stages under different
architectural and structural solutions, the evolution of energy usage and energy
resources for various sectors of the national economy, as well as the objectives
put forward by the national strategies and programs for energy efficiency are
presented in the paper.
Keywords: energy efficiency, energy efficiency policies, national plans,
housing fund
Cuvinte cheie: eficienţă energetică, politici de eficienţă energetică,
planuri naţionale, fond locativ
Descarcare text


26-6 COMPARAȚIE ÎNTRE DATE MĂSURATE ȘI CALCULATE CU PRIVIRE LA INCENDIEREA TRENURILOR

COMPARISON BETWEEN MEASURED AND CALCULATED
DATA REGARDING A TRAIN FIRE
The objective of this work is to compare the results of a model
application with the measurements of visibility and temperature in case
of fire in a train carriage. The aim is to find out the criticalities and to
organize an adequate evacuation plan.
Keywords: evacuation, fire, train, temperature trend
Cuvinte cheie: evacuare, incendiu, tren, dinamica temperaturii
Descarcare text


26-5 MONITORIZAREA MIROSURILOR ÎNTR-O INSTALAȚIE DE DIGESTIE ANAEROBĂ

ODOUR MONITORING IN AN ANAEROBIC
DIGESTION PLANT
In the latest years the problem of odour emissions has got an
increasing emphasis, due to the expansion of urban areas with the consequent
approach of the settlements to the industrial areas and the increase of public
awareness towards environmental issues. Odours do not cause toxic effects to
human health. However they can cause symptoms in both physiological (as
respiratory problems, nausea and headaches) and psychological levels. In this
article, the results of odour monitoring emissions in an anaerobic digestion
plant fed with dedicated crops in which there is a feeding/mixing tank
uncovered are presented. The role of this tank concerning the odour emissions
is the object of the paper.
Keywords: odour emission, anaerobic digestion, mixing tank, SOER,
OER
Cuvinte cheie: miros, digestie anerobă, rezervor de amestecare,
SOER, OER
Descarcare text


26-4 BIOCOMBUSTIBILI DURABILI PENTRU ZONELE RURALE ÎN CURS DE DEZVOLTARE: CAZUL BRAZILIEI

SUSTAINABLE BIOFUELS FOR RURAL AREAS OF
DEVELOPING COUNTRIES: BRASILIAN CASE STUDY
The objective of the application is to describe a project for
sustainable development, proposed in Brazil regarding energy
production and economic self-sufficiency, using as a raw material, the
residual oil and other biomass available in this country. Additionally, the
potential of biofuel in Brasil is also discussed.
Keywords: Biomass, biofuels, energy, renewable energies,
sustainable development
Cuvinte cheie: biomasa, biocombustibili, energie, energie
regenerabilă, dezvoltare durabilă
Descarcare text


26-3 EINIGE FRAGEN BEZÜGLICH DER VERGLEICHSSTELLENTEMPERATUR VON THERMOELEMENTEN

UNELE PROBLEME PRIVIND TEMPERATURA DE
REFERINȚĂ A TERMOCUPLURILOR
La măsurarea temperaturii cu termocupluri, o cauză de erori poate fi
schimbarea temperaturii de referință a acestora. În prezenta comunicare se
analizează diagrame care permit citirea directă a corecțiilor la variația
temperaturii de referință, cu un exemplu concret pentru termocuplul NiCr-Ni.
Bei Temperaturmessung mit Thermoelementen, eine Fehlerursache
der Vergleichstemperaturänderung ist möglich. Innerhalb dieses Aufsatzes
wurden Diagramme entwickelt die ein direcktes Ablesen der Korrektionen bei
Schwanken der Vergleichstemperatur ermöglichen, mit einem konkreten
Beispiel für ein NiCr-Ni Thermoelement.
Schlüsselwörter: Thermoelementen in Betrieb, Vergleichsstellentemperatur
Cuvinte cheie: termocupluri în exploatare, temperatura de referință
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26-2 ANALIZA LEGISLAŢIEI CU PRIVIRE LA COMBUSTIA LEMNULUI TRATAT

TREATED WOOD COMBUSTION REGULATION ANALYSIS
In the latest years the European Union has started a review of the
regulations about the combustion of the woody biomass, a resource
widely available on the Earth with neutral impact in increasing
greenhouse gas emissions. Firstly, an overview of the legal situation at
global level is presented, and then a detailed explanation of the Italian
regulation is the core of this article. Basically, in 2006 the introduction of
the Legislative Decree n. 152 has established that virgin wood falls in
the category of fuels, instead treated wood (deriving from woodfurniture
industry rejects) is considered as waste: the consequence is
that its combustion is subjected to more stringent restrictions in term of
process monitoring and emission limit values. Finally, this paper wants
to underline that the legislative framework is not completely clear, so
not homogeneous interpretations by local governments (responsible for
authorisations) are possible.
Keywords: combustion, industrial, regulation, virgin biomass, wood
Cuvinte cheie: biomasă naturală, combustie, industrie, lemn, legislație
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26-1 PERSPECTIVE DE MONITORIZARE NECONVENȚIONALĂ A PCDD/F PENTRU O OȚELĂRIE

PERSPECTIVES OF UNCONVENTIONAL PCDD/F
MONITORING FOR A STEEL MAKING PLANT
PCDD/F emissions from steel making plants are characterised by
conveyed and diffused streams. As a consequence, the conventional approach
based on the control of emissions at the stack could not be sufficient to
guarantee an adequate environmental protection. The present paper focuses
on the results of a recent multi-disciplinary study on a steel making plant
located in the North of Italy in order to point out some control criteria based on
unconventional monitoring. In particular, the role of deposimeters and soil
characterisation is discussed in details.
Keywords: air, PCDD/Fs, soil, steel making plant, deposition
Cuvinte cheie: aer, PCDD/F, sol, otelarie, sedimentare
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25-86 SOLUŢII PENTRU ÎMBUNĂTĂŢIREA MĂRIRII CAPACITĂŢII PORTANTE A STRUCTURILOR DE REZISTENŢĂ ÎN CAZ DE INCENDII

ACCOMPLISHMENTS FOR THE FIRE RESISTANCE LOAD
BEARING CAPACITY IMPROVING OF THE STRUCTURES
The authors of the contribution presents several possible solutions
destined to improving the load bearing capacity of the steel structural elements.
In this sense, are described some existent solutions, respectively two other
originals, ones. Every solution is analyzed from their usefulness’ point of view,
respectively their limits. The original solutions/proposals seem to fulfil several
major fire safety criteria, mainly to increase the safe period of the structural
elements. The authors intend applying one of them in a forthcoming PhD
thesis experimental part.
Keywords: Steel structures, fire, load capacity, protection against fire
Cuvinte cheie: structuri metalice, incendii, capacitatea portantă,
protecţie la foc
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25-85 VERIFICAREA STRUCTURII DE REZISTENŢĂ LA VAGOANELE DE MARFĂ DESCOPERITE CU PEREŢI ÎNALŢI UTILIZATE ÎN TRANSPORTURILE UZINALE CU METODA ELEMENTELOR FINITE

CHECKING THE STRUCTURE OF RESISTANCE FREIGHT
WAGONS DISCOVER HIGH WALL IN TRANSPORT
FACTORIES FINITE ELEMENTS
This article aims to examine the structure simulating resistance to
compression of the buffers a freight wagon found with high walls used in
factories and railways removal solution validation platform Handbrake finite
element method.
Keywords: transport, freight wagon power roads, finite elements
Cuvinte cheie: vagon de marfă, transporturi uzinale, elemente finite
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25-84 ANALIZA EXPERIMENTALĂ A TENSIUNILOR ŞI DEFORMAŢIILOR LA VAGOANELE DE MARFĂ DESCOPERITE CU PEREŢI ÎNALŢI UTILIZATE ÎN TRANSPORTURILE UZINALE PRIN METODA TENSOMETRIEI ELECTRICE REZISTIVE

EXPERIMENTAL ANALYSIS OF STRESSES AND
STRAINS FREIGHT WAGONS DISCOVER HIGH WALL IN
TRANSPORT FACTORIES TENSOMETRIEI USING
ELECTRICAL RESISTIVE
This article aims to examine the resistance structure by static testing
with combined efforts from a freight car found with high walls to use railway
Factory method resistive electric tensometriei.
Keywords: transport, freight wagon power roads, tensions, deformations
Cuvinte cheie: vagon de marfă, transporturi uzinale, tensiuni, deformaţii
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25-83 ANALIZA NUMERICĂ A STĂRILOR DE TENSIUNI ȘI DEFORMAȚII DIN AXA TRIUNGHIULARĂ A TIMONERIEI DE FRÂNĂ DE LA VAGOANELE DE MARFĂ

TRIANGULAR AXIS BRAKE WHEELHOUSE FREIGHT
WAGONS NUMERICAL STRESS AND STRAIN ANALYSIS
The 120 kN triangular axes of the whellhouse is used for the bogie
Y25Rsa, Y25Ls(s)d, and to the whellhouse to brake the wheel two-axle
wagons, load of 22.5 tons/axle. These triangular axes are used for the
transmission and distribution of braking force to the wheels of each wheelset.
Keywords: triangular, wheelhouse axis brake, freight wagons
Cuvinte cheie: axa triunghiulară, timonerie frână, vagoane de marfă
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25-82 UZURA BILELOR DE RULMENT ÎNCERCATE LA OBOSEALĂ

WEAR AND TEAR OF FATIGUE-TESTED
BEARING BALLS
The bearing balls with the 12.7 mm diameter equipping radial bearings
were tested for the fatigue endurance stress. The test was performed on a
specialised machine, which creates a constant force during testing, at a number
of revolutions that is also constant. By weighing and dimensional
measurements we find a mass loss after the fatigue test, and implicitly the
diameter became smaller due to wear and tear.
Keywords: bearing ball, fatigue testing, ball wear and tear
Cuvinte cheie: bila de rulment, de oboseală, uzura bilei
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25-81 ANALIZA DIMENSIONALĂ ȘI CALITATIVĂ A SUPRAFEȚELOR BILELOR DE RULMENT ÎNCERCATE LA OBOSEALĂ

DIMENSIONAL AND QUALITATIVE ANALYSIS OF THE
SURFACE OF FATIGUE-TESTED BEARING BALLS
During the fatigue testing of bearing balls, subjected to compression at
constant force and number of revolutions, we find, from the technological point
of view, certain micron-sized alterations in relation with the dimensions and
quality of the tested balls’ surface. The main parameters refer to the ball
diameter [mm] and the number of revolutions affected by the machine during
testing [number of revolutions]. The contact during testing is sphere to plane.
Keywords: bearing ball, fatigue testing, roughness
Cuvinte cheie : bilă rulment, încercare de oboseală, rugozitate
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25-80 ANALIZA DURATEI DE VIAȚĂ A BILELOR DE RULMENT DE DIMENSIUNI MICI

ANALYSIS OF ENDURANCE LIFETIME FOR
SMALL BEARING BALLS
In order to determine the lifetime of bearing balls we need to proceed
to their fatigue test. The machine for fatigue testing has a special construction,
with several spaces for simultaneous tests. The contact between the ball to test
and the plate is plane. During the test, the machine’s number of revolutions and
the loading force are constant. An important parameter during testing is
represented by the environment conditions (with or without lubrication).
Keywords: bearing ball, fatigue test, endurance, lifetime
Cuvinte cheie: bila rulment; încercare la oboseală; durata de viață
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25-79 STUDII ASUPRA SOLIDIFICĂRII INTERSECȚIILOR ÎN FORMĂ DE T, A PEREȚILOR PIESELOR TURNATE

SOLIDIFICATION STUDIES T JUNCTIONS, WALLS CASTINGS
This paper aims to make a numerical and experimental analysis of the
succession of solidification zones of T-shaped intersection walls of cast
aluminium alloys. The idea of this study started with the observation that these
areas solidification thru dedicated method of cooling modules analysis does not
fully correspond to numerical analysis using a simulation solidification program.
By using the simulation software NovaCast it was studied the succession of
solidification process of T – shaped intersection of the walls of aluminium alloy
castings En AC-Al Si7Mg0,3 in several versions of ratio between the two
intersecting walls. Subsequently were made casts of this form examining their
solidification by determining the compactness of intersection and surrounding
areas. In interpreting the results obtained it can be concluded that the T-shaped
intersection of two walls, in most cases, doesn’t act as a heat node, as it would
be presumed at first glance.
Keywords: aluminum alloys, solidification, cast
Cuvinte cheie: aliaje, aluminiu, solidificare, turnate
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25-78 DETERMINAREA COMPORTAMENTULUI LA OBOSEALĂ A SÂRMELOR ZINCATE ȘI NEZINCATE UTILIZÂND PROGRAMUL DE SIMULARE ANSYS

DETERMINATION OF GALVANIZED WIRE FATIGUE
BEHAVIOR USING ANSYS SIMULATION SOFTWARE
Although the total number of parts that break during service is not
great, however over 50 % of the breaks are caused by fatigue cracking or
corrosion fatigue, and so is of a great importance the knowledge and mastery
of this phenomenon.
This study discusses the fatigue behaviour of the wires, making a
comparison of results obtained on galvanized wire specimens and on
ungalvanized wire specimens, using Ansys analysis program.
Keywords: fatigue, meshing, CAD model, number of cycles
Cuvinte cheie: oboseală, discretizare, model CAD, număr de cicluri
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25-77 STUDIU ISTORICO-CRITIC AL ANALIZEI DIMENSIONALE

HISTORICO-CRITICAL REVIEW OF DIMENSIONAL ANALYSIS
On the base of numerous literatures a critical review of main facts and
events that played a significant role in the history of dimensional analysis will be
presented. Dimensional analysis appeared in the antiques with the necessity to
qualitatively describe and understand the physical world and was fructuously
developed in the works of Galileo Galilei, Pierre-Marie-François Daviet de
Foncenex, Jean Baptiste Joseph Fourier and John William Strutt. Application of
dimensional analysis on a large scale began after 1914, when Edgar
Buckingham demonstrated his Π− theorem and Percy W. Bridgman published
his „Dimensional analysis” in 1922.
Keywords: history, geometrical dimensions, physical dimensions,
principle of dimensional homogeneity, Π – theorem, dimensional analysis
Cuvinte cheie: istorie, dimensiuni geometrice, dimensiuni fizice, principiul
de omogenitate dimensională, teorema Π , analiză dimensională
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25-76 CONTRIBUŢII LA TEORIA ALGEBRICĂ A ANALIZEI DIMENSIONALE

CONTRIBUTIONS TO THE
ALGEBRAIC THEORY OF DIMENSIONAL ANALYSIS
Dimensional analysis is based on the tacitly accepted idea, that physical
quantities, units and their dimensions represents algebraically factors, with
which you can perform ordinary operations like with the numbers. To
demonstrate the viability of this idea in the present paper were formulated and
proved four theorems of algebraic theory of dimensional analysis, taking as
starting point the relation between the definition of the physical quantities and
the invariance principle of the physical laws. It also shows, whether two
quantities are mechanical in nature, the product or multiplier of them is also of
mechanical nature. This correlations can be extended to others physical
quantities such as heat, electricity, electromagnetic, chemical etc.
Keywords: physical quantity, unit, numerical value, dimension,
dimensional analysis
Cuvinte cheie: mărime fizică, unitate, valoare numerică, dimensiune,
analiză dimensională
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25-75 CONSIDERAȚII PRIVIND ÎNCERCAREA LA TRACȚIUNE A MATERIALULUI UZUAL FOLOSIT PENTRU PARAPETELE DE PROTECȚIE LA DRUMURI

CONSIDERATIONS ON TENSILE TEST OF USUAL
MATERIAL USED ON ROAD RESTRAINT SYSTEMS
The paper presents a comparison between the results of tensile test
experiments for the material used for road restraint systems, S235JR, black
and galvanized. Deformable road restraint systems protect the vehicles from
danger, which are forwarded on the carriageway minimizing serious injury.
After the execution of the restraint systems components, these are
promoted on the technological flow for hot dip galvanizing, being protected
against corrosion.
Keywords: tensile test, S235JR galvanized, road restraint systems
Cuvinte cheie: încercare la tracțiune, S235JR zincat, sisteme de
reținere rutiere
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25-74 CONSIDERAȚII PRIVIND LĂȚIMEA DE LUCRU A PARAPETELOR LA IMPACTUL CU O SFERĂ

CONSIDERATIONS REGARDING THE WORKING
WIDTH OF ROAD RESTRAINT SYSTEMS AT
THE IMPACT WITH A SPHERE
This paper presents the simulation of the behaviour of two types of
road restraint systems on impact with a sphere in different points from the pillar
axis. The working widths of the restraint systems during collisions are
presented. The working width is very important because it characterizes the
parapets during impact. The simulations were performed with the help of finite
element software using Altair Hyper Works modules.
Keywords: displacement of parapets, road restraint systems
Cuvinte cheie: deplasarea parapetelor, sisteme de reținere rutiere
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25-73 EVALUAREA TEORETICĂ A PERFORMANȚELOR UNEI BARIERE DE SIGURANȚĂ RUTIERĂ

THEORETICAL PERFORMANCE EVALUATION
OF A TRAFFIC SAFETY BARRIER
By definition, the railing is a wall or a railing of little height which serves
to delimit the edge of a road, a bridge, aimed at stopping vehicles and
restoration mainly on the carriageway, pedestrians and conveyance of other
road users. Protective guardrail road safety ensures good road contact because
a vehicle deforms elastically, annihilating shock.
Keywords: enclosures, endurance, steel, deformation, protection
Cuvinte cheie: carcase, rezistență, oţel, deformare, protecţie
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