Volume 2, No. 11 (2005)
Articles
DETERMINATION OF THE AVAILABLE AVERAGE DAILYSOLAR POWER IN IASI AND PATRA
CARP IULIA
The purpose of this study is to make a comparison between the solar powers thatwe can subtract using solar panels in two different locations: Iasi, Romania and Patras,Greece. The considerations in this project were based on the values obtained using acomputer program called Meteonorm witch was designed to provide useful weatherforecasts for different months, days or hours. As most of the people would also assume, Ithought in the beginning that the two values would be totally different and that the solarpower witch can be used in Greece has much bigger values than the one in Romania. Well,as it seems, my assumptions were incorrect and hopefully the values obtained from thisresearch project will bring some benefits to the Romanian people regarding the matter ofusing the solar power, a free source of power, which does not pollute and which is usedworldwide with great success and multiple future economical advantages.
RESEARCH REGARDING THE BAKING CONDITIONS OF THEDOUGH MADE OF WHEAT FLOUR WITH SOY ANDBYPRODUCT OF THE BUTTER OBTAINING
CIOBANU DOMNICA, LEONTE MIHAI, TULBURE MONICA, PĂDURARU LĂCRĂMIOARA
The research consists in the procurement of bakery products with additionsfarinaceous the soy 6% and byproduct of butter obtain. The research has a doubletechnological appearance and economic, through the utilization of byproduct from thetechnology of obtain the butter, with the improvement quality of the bakery products.
CONTRIBUTIONS REGARDING ESTABLISHING THE OPTIMUM PARAMETRES IN THE BAKING PHASE OF THE DOUGH MADE OUT OF WHEAT FLOUR BYPRODUCT MILLING AND THE BUTTER OBTAIN
CIOBANU DOMNICA, TULBURE MONICA, LEONTE MIHAI
The researches aim was the capitalization of the byproducts from milling and baking industry, and byproducts from milk processing, and the butter obtain. The research phase refers to determine the baking parameters of the dough in which it was used a mixture of wheat flour, 7%, by product milling and byproduct to the butter obtain. The dough composition on determined the technical-economical role of the experiment, together with the devolution by capitalization.
FAILURE OF SHELL AND TUBE HEAT EXCHANGERSFROM INDUSTRIAL COOLING WATER SYSTEMS
GAVRILĂ LUCIAN
The paper presents the most frequent failures encountered in shell and tube heatexchangers used as cooling equipment in different technological processes, due to poordesign, manufacturing faults, improper operating, maintenance and repairing. Theconclusions of the paper are based on the monitoring of several cooling systems fromchemical and petrochemical plants, power plants and oil refining facilities, during almost adecade of service.
CONTRIBUTIONS REGARDING THE WATER QUALITY EVALUATION FROM VRANCEA COUNTY, SIRET HYDROGRAPHICAL BASIN. III.THE HYDRO CHEMICAL CHARACTERIZATION SIRET RIVER
IFRIM IRINA *, NEDELCU CRISTINA **, CIOBANU DOMNICA ***
The water quality of Siret River in Vrancea County certainly shows the direct negative influence on the quality of the tributaries that are infected with residual waters resulted from the industrial activities.
CONTRIBUTIONS REGARDING THE WATER QUALITY FROM SIRET HYDROGRAPHICAL BASIN
IFRIM IRINA *, NEDELCU CRISTINA **, CIOBANU DOMNICA ***
The research program that was carried on emphasized the pollution degree of Siret River in Vrancea County zone, pollution mostly determined with the help of the industrial waste water overflow, with a polluting qualitative level overtaking the accepted standard limits.
OPTIMIZED THIN FILMS DEPOSITION SYSTEM
LAZĂR GABRIEL, VASCAN IOAN, STAMATE MARIUS, LAZĂR IULIANA, RUSU IOAN
A thin films deposition system using a combination between magnetronsputtering deposition technique and deposition from hydrocarbon gases in rf discharge (glowdischarge) is presented. The installation was developed in Bacau University laboratories inorder to optimize the deposition process. With the studied system, the high energy of thesubstrate incident species, specific to sputtering deposition, is combined to the high methanedecomposition from glow discharge process.
CONTRIBUTIONS REGARDING THE BEHAVIOR OF THEPLASMA BELOW INFLUENCE OF TECHNOLOGICALPREVAILING FACTORS
LEONTE MIHAI, CIOBANU DOMNICA, TULBURE MONICA, PAVEL EDUARD
The sanguine plasma from the blood stabilized with polyphosphate sodiumrepresents an important source of gelatinization and emulsification, for the meat industry.The stability of functional features for the sanguine plasma is possible in conditions oftemperature, addition of chloride sodium and the duration of respective treatment, thetemperature of 40 0C, the duration of 10 minutes and an additions of chloride of sodium of0, 6 Mol L.
PREPARATION OF BIODIESEL USING SUPERCRITICAL METHANOL
LUCHIAN DOREL**, NISTOR DENISA*, MIRON DORU NECULAI*, BUCUR ILIE*, URSU ALINA*
Transesterification of soybean oil in supercritical methanol has been carried outin the absence of catalyst. A co-solvent was added to the reaction mixture in order todecrease the operating temperature, pressure and molar ratio of alcohol to vegetable oil.With CO2 as co-solvent in the reaction system, there was a significant decrease in theseverity of the conditions required for supercritical reaction.
GLOBALIZATION
MĂCĂRESCU ANCA
Globalization is, by all means, one of the most used words nowadays. One canfind it in any person’s vocabulary, it turns up in any debate. It exceeded long ago its initialmeaning: the integration of the economic systems, promoted by the technological progressand by the multiplication of the commercial relations. It even came to ideological conflicts.But there are other more serious reasons: economy, the social life, culture, art, the religiouslife and the spirituality, the communication, the services – everything is continuouslyboiling. All the scaffolding on which the entire world order – still present – is based on tendsto be blown up and replaced. How far can it go without dropping the situation out of hand?Is it a natural stage in the world’s evolution scale? Is it a sign of progress or is it the lastphase of the society before its collapse? Is it an inevitable phenomenon or a provoked andup kept one? Finally, all this waste of tumult can lead to some result?
DURABLE DEVELOPING
MĂCĂRESCU BOGDAN, NEDEFF VALENTIN, PANAINTE MIRELA, MOŞNEGUŢU EMILIAN
Nowadays, durable developing is considered to be a global objective. TheEuropean Union has adopted an integrative strategy to be able to assume an active role inthe efforts of adopting the durability principle in the economic politics, considering thecommitments taken at Rio (1992), so as an evolution towards a “more prosper and more fairsociety, assuring a cleaner, more secure environment, and offering a higher quality of life”be possible.
THE NECESSITY OF AN EFFICIENT ENERGY USE, AND THE REALITIES IN BACAU AERIA
MĂCĂRESCU BOGDAN, NEDEFF VALENTIN, PANAINTE MIRELA, MOŞNEGUŢU EMILIAN
Energy saving is the cheapest, easily obtainable and non polluting energyresource, when compared to the fossil fuels resources or the regenerative energy resources.
IMPROVING THE ENERGY EFFICIENCY OF A MICROCLIMATESYSTEM OF AN ANIMAL FARM BY OPTIMIZING OF THEMICROCLIMAT PARAMETERS
MIHAILOV NIKOLAY, EVSTATIEV BORIS
The present paper describes an analysis of energy processes for supporting amicroclimate in animal farm buildings. The energy balance components are analyzed.Moreover, the process of energy exchange with the environment is investigated with specialemphasis on the principal factors and their influence on the energy exchange with theenvironment. An algorithm describing optimized process is synthesized. The algorithm itselfis based on the model that describes thermodynamic and energy process inside the farm.
RESEARCHES REGARDING THE ACID RAIN AND IT’S IMPACT ON THE ENVIRONMENT
MIRON DORU NECULAI*, NISTOR DENISA*, URSU ALINA*, ANDRIEŞ IULIANA*, GRIGORAŞ ADINA*, BUCUR ILIE*, ANDREI MIHAELA**
Acid rain is formed by the combination of sulphuric and nitrate acids with water steams coming from the atmosphere. In this work there had been regarded the mechanisms the cause the acid rain as well as the impact it has on the environment. Having this basic information the work comes with some ideas to reduce the pollution by acid rain that can be used in the near future.
STUDIES REGARDING THE SORPTION OF NITROSO R-SALTON AMBERLITE IRA 402 RESIN (Part II)
MITOŞERIU OLGA *, RĂDULESCU EUGEN, STANCIU CONSTANTIN, CANTEMIR GHEORGHE
The paper presents some peculiar aspects of ion exchange behaviour for astrongly basic anion exchange and sulphonic chelating agent. A chelating resin wasprepared from AMBERLITE IRA 402 (Cl-) - a common strongly basic anion- exchanger,by treatment with Nitroso R-Salt (NRS).The sorption of NRS on resin and some properties of NRS –IRA 402 chelating resin have been studied.Some parameters of ion-exchange equilibrium as the distribution coefficients Kd, ion-exchange constant, uptake percentage R (%) and apparent Gibbs free energy change (NRSClK-G.) have been calculated.
STUDY AND RESEARCHES REGARD THE POSSIBILITIES TOREDUCTION POLLUTION EMISSIONS AT THERMOELECTRICPOWER STATIONS WHICH USING RIGHT ESSENTIALCOMBUSTIBLE LIGNITE
NEDEFF VALENTIN, MOŞNEGUŢU EMILIAN, MĂCĂRESCU BOGDAN, PANAINTE MIRELA
The work present the results of monitoring activity of a thermoelectric powerstation which have a capacity at 420 t/h steam and which using right combustible the coallignite.The measurements was make in period 2003-2005 in four different months, using asapparatus Flue Gas Analyzer DELTA 2000 CD-IV.Was an analyzed value of principal polluted emissions as against with intern and europeanadmissible values.
CONTRIBUTIONS REGARDING THE WATER QUALITY EVALUATION FROM VRANCEA COUNTY, SIRET HYDROGRAPHICAL BASIN.I. THE HYDRO CHEMICAL CHARACTERIZATION OF THE RIVERS FROM THE PUTNA BASIN: MILCOV AND RAMNA RIVERS
NEDELCU CRISTINA *, IFRIM IRINA **, CIOBANU DOMNICA **
Knowing the chemical composition of the Rivers of Siret hydro-graphical basin, represents a practical interest in the water quality evaluation, in the utilization control in socio- economical activities. The ensemble of natural and anthropic factors influences the hydro-chemical characteristics of the Rivers of Putna basin. The subject of this research is the quality evaluation of the main tributaries of Putna River: Milcov and Ramna Rivers.
CONTRIBUTIONS REGARDING THE WATER QUALITY EVALUATION FROM VRANCEA COUNTY, SIRET HYDROGRAPHICAL BASIN. II. THE HYDRO CHEMICAL CHARACTERIZATION OF PUTNA RIVER
NEDELCU CRISTINA *, IFRIM IRINA **, CIOBANU DOMNICA **
The chemical composition of Putna River is obviously influenced by the chemical composition of its tributaries and by the polluting conditions, caused by the industrial activities where the hard biodegradable organic compounds are dominant.
RESEARCH CONCERNING THE ENVIRONMENT POLLUTION WITH DIOXINS
NISTOR DENISA, URSU ALINA, MIRON DORU NECULAI, PLATON NICOLETA, GRIGORAŞ ADINA, ANDRIEŞ IULIANA, LEONTE MIHAI
Dioxins are substances that are formed unintentionally, most of the times by the process of incineration [1,2]. This explains the fact that these substances are omnipresent in the environment, even though in very small quantities. This paper present some aspects regarding the effects of dioxin present specially in atmosphere, the sources of dioxins emissions, the mechanism of action in animal and human organisms and there are proposed some solutions at the dioxins presence in human life.
RESPECT CONCERNING TO REDUCTION GASES WITH GREENHOUSE EFFECT
PANAINTE MIRELA, NEDEFF VALENTIN, MOŞNEGUŢU EMILIAN, SAVIN CARMEN
One of the most appalling problem with which itself confront the planet its greenhouse effect. The planet heat it’s maintained at atmosphere in the same mode in which greenhouse effect keep the heat in ice falls and stop evaporation. The peoples abash the natural process which are thus at millions year, from way of life and at result the planet are now more hot.
STUDIES REGARDING THE SORPTION OF NITROSO R-SALTON AMBERLITE IRA 402 RESIN (Part I)
RĂDULESCU EUGEN, MITOŞERIU OLGA *, STANCIU CONSTANTIN
The paper presents some peculiar aspects of ion exchange behaviour for astrongly basic anion exchange and sulphonic chelating agent.A chelating resin wasprepared from a common strongly basic anion- exchange resin used in a waterdemineralization plant,AMBERLITE IRA 402 (Cl- ), by treatment with Nitroso R-Salt(NRS).The sorption of NRS on resin and some properties of NRS – IRA 402 chelatingresin have been studied.The capacity of resin loaded with NRS was found to be 1.70mmoles NRS /g. Chelating sorbent exhibits a good stability in acid medium (HCl).
SENSORY CHARACTERISTICS AND THE VARIATION OF A FEWPHYSICAL-CHEMICAL PARAMETERS OF CHORIZO SAUSAGESPREPARED WITH Staphylococcus carnosus AND Lactobacillusplantarum
ROMAN MONICA
The main concern of food industry specialists nowadays is to guarantee publichealth by securing the consumption of salubrious food products with a high degree ofinnocuousness and a high nutritional value. The informed consumers prefer fresh meatproducts. Raw-dry sausages and salami fall into this category because they are wellpreserved for longer periods of time and for their specific flavour. The present study’s aimwas to determine the nitrite’s content variation- nitrite is imperative for the reddish colourin meat and also for anti-microbial protection by using starter cultures of selectedmicroorganisms, which, together with other components such as humidity, pH value andhydrolysed nitrogen secure the product’s preservation stability – as well as to analyse thefinite product’s sensory characteristics.
TiO2 AN EXCELLENT MATERIAL FOR ENVIRONMENTAL PURIFICATION
STAMATE MARIUS, LAZĂR GABRIEL, LAZĂR IULIANA, VASCAN IOAN
Scientific studies on photocatalysis started about two and a half decades ago.Titanium dioxide (TiO2), which is one of the most basic materials in our daily life,has emerged as an excellent photocatalyst material for environmental purification. Inthis review, current progress in the area of TiO2 photocatalysis, mainly photocatalyticair purification, sterilization and cancer therapy are discussed together with somefundamental aspects. A novel photoinduced super hydrophilic phenomenon involvingTiO2 and its applications are presented.
COMPARISON BETWEEN AEROBIC AND ANAEROBIC WASTEWATER TREATMENT
TOPLICEANU LILIANA, MOISA MIHAELA
From the beginning it was a competition between the aerobic and anaerobicmethod for wastewater treatment. The paper makes a short presentation of the principles ofaerobic and anaerobic system with the advantages and weaknesses of each of them. Theevolution directions and utilities possibilities are also exposed. The conclusions of thiscomparison are presented in the final capitol.
ONE-STAGE SYSTEM OF ANAEROBIC DIGESTER
TOPLICEANU LILIANA
The most common types of anaerobic digesters for solid wastes were comparedbased on technical and biological performance and reliability. There are three principalcategories: one-stage, two stage and batch systems. The paper presents the two type of one-stage system “wet “and “dry” system, and make a comparison between them frombiological, technical and environmental viewpoint..
RESEARCH REGARDING THE INFLUENCE OF USEDWATER OF THE MEAT INDUSTRY THROUGH THERECEIVER
TULBURE MONICA, CIOBANU DOMNICA, PAVEL EDUARD
The specific impurities indicators of used water in slaughter are show thedegree of pollution with influence on environment.As the results of the research it was obtained dominant pollutions values for CCOCr andCBO5, in the condition of edible foundry, such as the addition of suspension matters. Thecontent of fats in this technological stage are growth, situated between 12,8 – 81 kg/t.
RESEARCH REGARDING THE INFLUENCE OF THE ADDITIONOF WHEY OVER THE REOLOGICAL PROPERTIES OF THEBREAD MADE OF WHEAT FLOUR AND BARLEY GERNS
TULBURE MONICA, GROSU LUMINIŢA, CIOBANU DOMNICA, PĂDURARU LĂCRĂMIOARA
The activity investigatory is adverted to the settlement of the conditions ofbake of a dough in which used-up whey’s in proportion of 30% and germs of barley,maximum 6%, in the conditions maintain constantly next the technological parameters: theduration of ferment 60 minutes, the temperature of ferment 36 0C, bakery yeast 3%, NaCL1,5%, all report to the amount of farinaceous.
OPTIMIZATION OF BIOGAS PRODUCING UTILIZING ANEXPERIMENTAL PROGRAM OF TYPE 33
URSU ALINA*, NISTOR DENISA*, MIRON DORU NECULAI*, PLATON NICOLETA*, FRUNZA MIHAELA**, ONICA STELA***
This paper propose to present how can be utilise the experimental programs oftype kn for optimisation of biogas producing. The feed stock for the biogas obtain isrepresent by fermentable organic substances that can produce appreciable quantities ofmethane gas.