Meridian Ingineresc Nr.4,2004

8/2/2019 Meridian Ingineresc Nr.4,2004

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ORGAN AL UNIVERSITII TEHNICE A MOLDOVEII ASOCIAIEI INGINERILOR DIN MOLDOVA

MERIDIAN

INGINERESC

Publicaie tehnico-tiinifici aplicativ fondat la

9 februarie 1995

4

2004

Editarea revistei a fost efectuatcusprijinul financiar al Consiliului Suprempentrutiini Dezvoltare Tehnologic

ISSN 1683-853X

EDITURA U.T.M.


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C U P R I N S

Dorogan V.

Gordelenco P.,

Javgureanu V.

Bostan I., Dulgheru V.,

Trifan N.

Tarlev V.

Popovici I. C.,

Popovici E.

Codreanu C.,

Prouc I.

Stratan A.

urcan Iu.

Cuhal R., Cuhal V.

Ciuperc R.

Preda C.

urcan R.

Balan S.

Lupaco A., Dicusar G.,

Moanu A., Lupu O.

Harnagea F., Mihai A.,

Malcoci M.

Irovan, M., Ciocoiu, M.

Rdulescu B.,

Rdulescu M.C.

Amariei V., Bunescu M.,

Dicusar I.

iauu V., Merticaru E.

Calancia O.,Moldoveanu V.,Catarschi V., Porof I.

Rezumate...........................................................................................................

Cercetarea tiinifici tehnologic efectuat la Universitatea Tehnic aMoldovei n a. 2004...........................................................................................

Situaia actual pe plan mondial n domeniul construciei de maini-

unelte.................................................................................................................Analiza comparativ a influenei parametrilor geometrici ai angrenajului

precesional asupra abaterii profilului cu i fr modificare..............................

Analiza caracteristicilor cinetice ale procesului de uscare a caiselor prin

metoda combinat convecie + U.H.F...........................................................

Aproximarea numerica a valorilor si vectorilor proprii pentru matricesimetrice.............................................................................................................

Modelarea i determinarea caracteristicilor statice ale transformatoarelordin posturile de transformare.............................................................................

Modelarea parametrilor mecanismului de funcionare a sectorului agrar alRepublicii Moldova..

Calitatea materiei prime pilonul de baz n asigurarea calitii producieivinicole al Republicii Moldova.........................................................................

Cumprrile de valut ale bncii centrale ca instrument al politicii monetare:cazul Republicii Moldova..................................................................................

Cercetri preliminare n mediul ANSYS CFX-5 a parametrilor funcionaliale rotorului eolian elicoidal..............................................................................

Materiale textile obinute prin procedee neconvenionale.................................

Dificultile relaiilor ntreprinderilor vinicole cu furnizorii materiei prime necesitatea integrrii sectorului viti-vinicol......................................................

Contribuii la clasificarea corpurilor feminine n funcie de caracteristicileantropomorfologice ale conformaiei

Intensificarea procesului de uscare a viinelor..................................................

Contribuii la studiul modificrilor dimensionale suferite de soluiile adeziven procesul de formare a peliculei solide...........................................................

Optimizarea parametrilor constructivi ai produselor de mbrcminte.....

Finisarea suprafeelor plane folosind procedeul de vibrorulare cu bil............

Sudarea: tehnologii, echipament i personal la nivelul cerinelor europenei internaionale..................................................................................................

Studiul forelor de reacune intr-un mecanism de ambalat...............................

Algoritm de calcul al greutatii specifice a metalului depus in timpulprocesului de sudare cap la cap a tablelor de otel de diverse grosimi.....

Personaliti de vaz ale intelectualitii tehnice din Basarabia........................Inveniile i istoria lor.............................................................................

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R E Z U M A T E

Dorogan V. Cercetarea tiinific i tehnologicefectuat la Universitatea Tehnic a Moldovei n a.2004. Pregtirea cadrelor inginereti de calificarenalt nu poate firealizat fr cercetarea tiinific de

performan. n lucrare se prezint rezultatele

cercetrilor tiinifice efectuate la U.T.M., surseleprincipale de finanare a cercetrilor, dotarea tehnico-material a cercetrii.

Gordelenco P., Javgureanu V. Situaia actual peplan mondial n domeniul construciei de maini-unelte. Mainile-unelte sunt echipamente de produciefundamentale fr de care nici una din industriileangajate n producerea bunurilor materiale nu poateexista. Astfel, nici un produs care constituie bazacivilizaiei moderne, televizoare, calculatoare,telefoane, automobile, avioane, satelii nu pot fi

fabricate fr aportul esenial pe care l aduc mainile-unelte.

Bostan I., Dulgheru V., Trifan N. Analiza

comparativ a influenei parametrilor geometrici aiangrenajului precesional asupra abaterii profiluluicu i fr modificare. n lucrare se prezint uneleaspecte ale analizei valorii abaterii profilului dinilorobinui prin deformare plastic, care este generat demecanismul de legtur a nodului de deformare cucarcasa. n acest caz nodul de deformare plastic adinilor va efectua o micare precesional cu o eroare,

generat de mecanismul de legtur, care estetransferat pe profilul dinilor. n rezultatul analizei aufost elaborate recomandri privind domeniile deutilizare a roilor dinate obinute prin deformare

plastic (cu sau fr prelucrare ulterioar).

Tarlev V. Analiza caracteristicilor cinetice a

procesului de uscare a caiselor prin metodacombinat convecia + UHF. Prezenta lucraredescrie cinetica uscrii convective i combinat convecia + U.H.F. la temperatura agentului termic de60, 70, 80, 90 i 100C. Creterea temperaturii

agentului termic cauzeaz mrirea vitezei dedeshidratare n prima perioad, majoreaz valoareaconstantelor de uscare n prima i a doua perioad,reducerea duratei procesului de uscare a caiselor de la1317 min. prin metoda convectiv pn la 654 min.

prin metoda combinat - convecia + U.H.F. Cea maifavorabil este intensitatea cmpului electromagnetic18000V/m, iar temperatura agentului termic de 100C.

Popovici I. C., Popovici E. Aproximarea numerica a

valorilor si vectorilor proprii pentru matricesimetrice. In lucrare se prezinta metoda rotatiilor a lui

Jacobi si programul aferent in mediul de programareMATLAB pentru calculul aproximativ a valorilor sivectorilor proprii ale matricelor simetrice.

Codreanu C., Prouc I. Modelarea i determinareacaracteristicilor statice ale transformatoarelor dinposturile de transformare. n prezenta lucrare este

prezentat metoda de calcul a caracteristicilor statice(CS) ale transformatoarelor de putere la tensiunea

10/0,4 kV pentru diferite valori ale coeficientului dencrcare. Rezultatele au fost utilizate pentrudeterminarea coeficienilor de aproximaie ale

polinoamelor de gradul doi, care la rndul lor pot fiutilizai pentru calculul regimului optim de tensiune la

barele acestor transformatoare.

Stratan A. Modelarea parametrilor mecanismuluide funcionare a sectorului agrar al RepubliciiMoldova. Prezenta lucrare reflect necesitatea acut

pentru restructurarea cardinal a principiilor imetodelor de reglementare i susinere a sectorului

agrar n condiiile deficitului fondurilor publice. Uneleamendamente importante la cadrul instituional i legalsunt necesare. n acest context, rolul statului esteincontestabil.

urcan Iu. Calitatea materiei prime pilonul debaz n asigurarea calitii produciei vinicole alRepublicii Moldova. n economia mondial tot maifrecvent devine problema calitii produciei.Calitatea produciei vinicole n cea mai mare msurdepinde de calitatea materiei prime utilizate. Prezentalucrare reflect dinamica calitii plantaiilor de vii i

strugurilor recoltai, precum i impactul ei asupracalitii produciei obinute.

Cuhal R., Cuhal V. Cumprrile de valut alebncii centrale ca instrument al politicii monetare:cazul Republicii Moldova. Prezenta lucrareanalizeaz rolul interveniilor Bncii Centrale pe piaavalutar prin cumprri de valut strin, care potncuraja sau periclita evoluia economiei rii nansamblu. Cumprrile de valut de ctre BancaCentral ca fiind unul din instrumentele politiciimonetare i valutare utilizate n scopul reglrii

fluctuaiilor cursului de schimb reprezint sursaprincipal de completare a rezervelor valutareinternaionale i de cretere a bazei monetare.

Ciuperc R. Cercetri preliminare n mediulANSYS CFX-5 a parametrilor funcionali alerotorului eolian elicoidal. Apariia pe piaa desoftware a codurilor comerciale CFD (ComputationalFluid Dynamics) deschide perspective largi ncercetarea turbinelor eoliene. Avantajele cele maievidente ale cercetrii CFD sunt micorarea n timp aetapei de cercetare a obiectului de studiu, aplicnd

performanele i capacitile codurilor i tehnicii decalcul, reducerea pn la minimum a studiilor pemodele, astfel, elabornd produsul ntr-o perioadrelativ scurt. n lucrare se prezint rezultatele


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cercetrii preliminare ai parametrilor funcionali adou variante ale conceptului de rotor eolian elicoidal.

Preda C. Materiale textile obinute prin procedeeneconvenionale. n lucrare sunt definite textileleneesute care au la baz un suport textil numai dinfibre i textilele neconvenionale care folosesc, att

suporturi din fibre, ct i suporturi de fire, fire i fibre,esturi sau tricotare.

urcan R. Dificultile relaiilor ntreprinderilorvinicole cu furnizorii materiei prime necesitateaintegrrii sectorului viti-vinicol. Actualmente, cndRepublica Moldova a trecut deja la economia de pia,majoritatea ntreprinderilor din industria alimentar seconfrunt cu dificulti n relaiile cu furnizoriimateriei prime. n lucrare se prezint tendineledezvoltrii acestor relaii i se argumenteaznecesitatea integrrii pe vertical a sectorului viti-

vinicol.

Balan S. Contribuii la clasificarea corpurilor feminine n funcie de caracteristicileantropomorfologice ale conformaiei. n lucrareanominalizat se prezint clasificarea ntregii diversitia formelor exterioare ale corpurilor femeilor n funciede caracteristicile antropomorfologice aleconformaiei. Clasificarea propus va permite elabo-rarea bazelortiinifice ale proiectrii dimensiuniloriformelor raionale ale produselor de mbrcminte,lund n considerare multitudinea tipurilor

antropomorfologice ale conformaiilor feminine iasigurarea unui grad nalt de corespondendimensional dintre corp i produsul vestimentar.

Lupaco A., Dicusar G., Moanu A., Lupu O.Intensificarea procesului de uscare a viinelor.Investigaiile din lucrarea prezent sunt orientate

pentru elaborarea i dezvoltarea metodei netradiionalede uscare a viinelor cu folosirea microundelor. Esteanalizat cinetica uscrii n prima perioad de uscare,

precum i n cea de-a doua perioad de uscare. Estecercetat influena puterii magnetronului asupra vitezei

uscrii, indicilor de calitate ai viinelor uscate i aconsumului de energie. Aceste date permit apreciereaobiectiv a uscrii viinelor cu folosirea microundelor.

Harnagea F., Mihai A., Malcoci M. Contribuii lastudiul modificrilor dimensionale suferite desoluiile adezive n procesul de formare a peliculeisolide. Se prezint rezultatele obinute n urmacercetrii modificrilor dimensionale suferite desoluiile adezive prin urmrirea contraciei remanente a

peliculei adezive, lund n considerare concentraiasoluiei i durata de formare a peliculei solide. n acestsens au fost stabilite relaii de dependen funcional

privind influena duratei de formare a peliculei solide

asupra contraciei remanente, pentru concentraiidiferite ale soluiei adezive, precum i influenasimultan a celor doi parametri asupra mrimiiacesteia.

Irovan, M., Ciocoiu, M. Optimizarea parametrilorconstructivi ai produselor de mbrcminte.

Prezenta lucrare trateaz problema optimizriiconstruciei de baz a produselor de mbrcminteexterioar pentru brbai prin prisma sectoarelorsuperioare de sprijin. Se utilizeaz un program originalde prelucrare a datelor experimentale, de modelarematematic i reprezentare grafic a modeluluimatematic. Se prezint rezultatele practice aleoptimizrii construciei produselor de mbrcminteexterioar pentru brbai.

Rdulescu B., Rdulescu M.C. Finisareasuprafeelor plane folosind procedeul de

vibrorulare cu bil. Industria romneasc trebuie sdevin competitiv n noul context economic mondial,ceea ce nseamn ca va fi nevoie s se produc la unnivel ridicat de performan n termeni de calitate, costi timp de producie pentru a avea o dezvoltaresusinut. Caracteristicile pieselor obinute prindeformare plastic superficial prezint caliti alesuprafeei net superioare celor obinute prin procedeede prelucrare cum ar fi: strunjire, frezare. Acestlucru se poate realiza ns numai prin alegereaadecvat a parametrilor regimului de lucru. Alegereaacestor parametri determinnd calitatea suprafeei

produsului finit.

Amariei V., Bunescu M., Dicusar I. Sudarea:tehnologii, echipament i personal la nivelulcerinelor europene i internaionale. Lucrareaabordeaz subiectele prezentate i discutate n cadrulSeminarului Internaional organizat de U.T.M. iAsociaia de Sudur din Republica Moldova (ASRM),

privind promovarea tehnologiilor moderne de sudaren practica industrial, organizarea pregtirii i

perfecionrii personalului n domeniul sudrii,facilitarea contactelor ntre persoane i grupuri despecialiti interesai n promovarea sudrii n diversedomenii ale economiei naionale.

iauu V., Merticaru E. Studiul fortelor dereactiune intr-un mecanism de ambalat. In lucrarese determina fortele de reactiune, considerandlegaturile excedentare, prin metoda eforturilor dinrezistenta materialelor. Este luat ca exemplu unmecanism din structura unei masini de ambalat unt.Sunt calculate reactiunile si se analizeaza influentalegaturilor excedentare.


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S U M M A R Y

Dorogan V. Scientific and Technological Research

Carried Out at the Technical University ofMoldova in 2004. The education of highly qualifiedengineers cannot be performed without undertaking

performance scientific research. In this work theresults of scientific research carried out at TUM, mainsources of financing research, technical and materialendowment of research have been presented.

Gordelenco P., Javgureanu V. Worlds actualsituation in the field of machinetools construction.Machine-tools are such an equipment of fundamental

production without which none of the industriesengaged in production of material goods can not exist.Thus, none of the product that form the basis of themodern civilization: TV sets, computers, telephones,cars, planes, satellites can not be produced without

essential support that machine-tools bring.

Bostan I., Dulgheru V., Trifan N. ComparativeAnalysis of the Precessional Gear Geometrical

Parameters Influence on the Deflection of theModified and Unmodified Profiles. In this worksomeaspects are presented concerning the analysis ofthe deflection value of the tooth profiles obtained by

plastic deformation which has been generated by the junction mechanism of the deformation knot withframing. In this case the knot of teeth plasticdeformation will produce a precessional motion with

an error, generated by the junction mechanism, whichis transferred to the teeth profiles. As result of thecarried out analysis recommendations have beenelaborated concerning the areas of application of thetoothed wheels obtained by plastic deformation (withor without further processing).

Tarlev V. The Analysis of Kinetic Characteristicsof the Drying Process of Apricots by CombinedConvection + UHF Method. This paper describesthe kinetics of the convective and combined convective + UHF drying methods at the tempera-

ures of 60, 70, 80, 90 and 100C. The increase intemperature leads to increase of the dehydration speedin the first period, to the increase of the dryingconstants in the first and second periods, as well as tothe decrease of the apricots drying duration from1317 min by means of convective method, to 654 min

by means of the combined convective + UHF method using an intensity of the electromagnetic fieldof 18000V/m at the temperature of 100C.

Popovici I. C., Popovici E. The numericalapproximation of the eigenvalues and eigenvectorsfor symmetrical matrices. In this article it is

presented Jacobis rotation method and the corres-onding program within the programming MATLAB

medium for approximate calculation of eigenvaluesand eigenvectors of the symmetric matrices.

Codreanu C., Prouc I. Simulating and

determination of static characteristics of powertransformers. The paper gives the method ofcalculation of static characteristics (SC) of powertransformers on a voltage 10/0,4 is offered atvarious factors of loading. The results have been usedto determine the factors of approximation of polynomsof the second order which are in turn used to calculatethe optimum levels of a voltage on the windings of

power transformers.

Stratan A. Modeling the parameters of thefunctioning mechanism of the agricultural sector of

Moldova. This article reflects the keen necessity for acardinal restructuring of the principles and methods ofregulating and supporting the agricultural field in theconditions of public funds scarcity. Some importantamendments to our institutional and legal frameworkare of great demand. Within this context the role of thestate is incontestable.

urcan Iu. The quality of raw material the basicelement in quality assurance of wine-makingproduction of Republic of Moldova. In worldeconomy even more often there are problemsconnected with quality of production. The quality of

wine-making production to the greatest degreedepends of quality of the used raw material. The givenwork reflects dynamics of quality of grape plantationsand obtained grapes, and also their influence to qualityof made production.

Cuhal R., Cuhal V. The purchases of foreign

currency of the central bank as monetary policyinstrument: case of the Republic of Moldova. The

present work analyses the role of central bankinterventions on the currency market through

purchases of foreign currency that may encourage or

jeopardize the evolution of the countrys economy as awhole. Purchases of foreign currency of the central bank as one of the monetary and exchange policyinstruments used to regulate the exchange ratefluctuations represent the main source of completingthe foreign exchange reserves and increasing themoney base.

Ciuperc R. Preliminary research in the ANSYSCFX-5 code of functional parameters of the helicalwind rotor. The apparition of CFD (ComputationalFluid Dynamics) commercial codes on the software

market opens large perspectives in the research ofwind turbine. The most evident advantages of researchCFD are: the decrease in time of the period in whichthe study object is research, applying the performances


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and the capacities of codes and computers; thereduction to minimum of model-based studies, thuselaborating the product in a relatively short period.The work presents the results of preliminary researchwith the functional parameters of two variants of thehelical wind rotor.

Preda C. Textile materials obtained throughunconventional procedures. This issue defines non-woven textiles that have as a base textile support madeonly of fibbers and unconventional textiles, whichutilize fibbers support, as well as thread support,threads and fibbers, tissues or knitwear. In addition,have been emitted criterions of classification ofmaterials obtained through unconventional

procedures, differed from classical tissues or knitwear.

urcan R. The problematic of the relations of thewine enterprises with the suppliers of raw material

- necessity of integration of the wine-makingindustry and the viticulture. Nowadays, when theRepublic of Moldova has already passed to the marketeconomy, majority of the enterprises of a food-

processing industry meet difficulties in the relationswith the suppliers of raw material. In this work thetendencies of development of these relations arerepresented and the necessity of vertical integration ofthe wine-making industry and the viticulture is

justified.

Balan S. The contribution to the classification of the

feminine bodies depending on theantropomorphological characteristics of the

conformations. In the present work there is presentedthe classification of the entire diversity of the exteriorforms of feminine bodies depending onantropomorphological characteristics of theconformations. The proposed classification will allowthe working out of the scientific basis for the

projection of dimensions and of rational form ofclothes products, taking into account the multitude ofthe antropomorphological types of feminineconformations and assurance of a high level ofdimensional correspondence between the body and theclothes products.

Lupaco A., Dicusar G., Moanu A., Lupu O. Theintensification of cherries drying process. The paper

presents some aspects regarding the elaboration anddevelopment of untraditional drying methods whichinvolve microwave use. Its analyzed the kinetic of thedrying process in the first and second period. Also, isstudied the influence of magnetron power on dryingspeed, cherries quality indicators and energyconsumption. These data allows an objective analyzeof microwave drying method.

Harnagea F., Mihai A., Malcoci M. Share toinvestigation the dimensional modifications suffer

of adhesive solutions at process of formation ofsolid coat. We present the results obtained by theresearch of dimensional modification of adhesivesolutions by means of following up concentration ofadhesive, taking into consideration concentration ofsolution and duration of solid coat formation have

been established relationship of functional dependence

of influence of forming duration of solid coat oncontraction for different concentrations of adhesivesolution, as well as simultaneous influence of thosetwo parameters on this size.

Irovan M., Ciocoiu, M. Optimization of constructiveparameters of clothing products. The present worksdeals with the problem of optimization of basicconstruction of clothing products for men by usingthe superior support sectors. There is used an original

program of experimental data processing, mathematicmodeling and graphical presentation of mathematic

model. There are presented the practical optimizationresults of basic construction of exterior clothingproducts for men.

Rdulescu B., Rdulescu M.C. Using the vibratorymachining process with a ball for the outside planesurface finishing. The Romanian industry has to

become competitive in new economical context. Thismeans that it would produce at a higher level of

performance in terms of quality, cost and money for asustainable development. The characteristics of the

parts made by plastically superficial deformation had

better surfaces qualities that the parts made by:turning, milling, This better surfaces qualities can be obtained only choosing the adequated parametersof working regime. The choosing of this parametersdetermines the finite product quality surface.

Amariei V., Bunescu M., Dicusar I. Welding:Technologies, Equipment and Personnel Accordingto European and International Requirements. Thiswork approaches the topics presented and discussedwithin the sessions of the International Workshoporganized by TUM and the Welding Society of theRepublic of Moldova (WSRM) concerning promotion

of modern welding technologies to industries,organization of instruction and training of personnelfor welding works, facilitating of contacts amongindividuals and groups of professionals interested in

promotion of welding to various fields of the nationaleconomy.

iauu V., Merticaru E. Study of the reaction forcesin a packing mechanism. In the paper there arecalculated the reaction forces, considering theredundant constraints through the effort method fromthe materials resistance. There is considered a

mechanism in the structure of a butter-packingmachine. The reactions are calculated and theinfluence of the redundant constraints on the reactionsis analyzed.


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S M M A I R E

Dorogan V. Recherches scientifique et technologiqueeffectues lUniversit Technique de Moldavie en2004. La formation dingnieurs dune qualification dehaut degr ne peut tre ralise sans recherchesscientifiques de performance. Les rsultats des recherches

scientifiques effectues lU.T.M., les sources principales de financement des recherches, la dotationtechnique et matrielle sont prsents dans louvrage.

Gordelenco P., Javgureanu V. La situation relle de

monde dans le domaine de la construction demachines-outils. Les machines-outils sont un telquipement de production fondamentale sans laquelleaucune des industries retenues dans la production demarchandises essentielles ne peut exister. Ainsi, aucun du

produit qui forment la base de la civilisation moderne: lestlviseurs, les ordinateurs, les tlphones, les voitures,les avions, les satellites ne peuvent pas tre produits sans

soutien essentiel que les machines-outils apportent.

Bostan I., Dulgheru V., TrifanN. Analyse comparativede linfluence des paramtres gomtriques delengrenage prcessionnel sur la dviation du profilavec et sans modification. On illustre dans louvragecertains aspects de lanalyse des valeurs de la dviationdu profil des roues obtenues par la dformation plastiquequi est gnre par le mcanisme de liaison du nodule dedformation carcasse. Dans ce cas-l le nodule dedformation plastique des roues effectuera un mouvement

prcessionnel une erreur gnre par le mcanisme de

liaison qui est transfre sur le profil des dents. Enrsultats de lanalyse ont t labores lesrecommandations concernant les domaines delutilisation des roues dentes obtenues par ladformation plastique (avec ou sans traitement ultrieur).

Tarlev V. Lanalyse des caractristiques cintiques du

procs du schage des abricots par la mthode combine convection + UHF. Le prsent travail dcrit le procsdu schage convectif aux tempratures de lagentthermique 60, 70, 80, 90 et de 100C. Laugmentation dela temprature de lagent thermique produit la rductionde la dure du schage dans la premire priode du

procs, augmente la valeur des constantes de schagedans la premire et deuxime priode de schage desfruits dabricot. On rduit la dure du schage de 1317minutes (celle impose par la mthode convective)

jusqu' 654 minutes (celle impose par la mthodecombine convection + UHV avec une intensit duchamp lectromagntique de 18000 V/m et avec unetemprature de lagent thermique de 100C).

Popovici I. C., Popovici E.Le approximationnumrique valeurs et vectors propres pour lesmatrices symtriques. On prsent le mthode rotations

du Jacobi et le programme crit dans MATLAB pourcompte approximatif valeurs et vectors proprespour les matrices symtriques.

Codreanu C., Prouc I. Le modelage et la dfinitiondes caractristiques statiques des transformateurs depuissance. Dans le travail on propose la mthode ducalcul des caractristiques statiques (S) destransformateurs de force pour la tension 10/0,4kV aux

divers coefficients du chargement. Les rsultats ont tutiliss pour la dtermination des coefficients del'approximation des polynmes du deuxime ordre, quisont a leurs tour utiliss pour le calcul des niveauxoptimums de la tension aux bornes des transformateurs de

puissance.

Stratan A.Lemodelage des paramtres du mcanismede fonctionnement du secteur agricole de laRpublique de Moldova. et article reflte la ncessitimprieuse pour une restructuration cardinale des principeset des mthodes de rglementation et soutenance du secteuragricole dans les conditions du dficit des fonds publiques.

Quelques amendements importants notre cadreinstitutionnel et juridique sont dune grande demande. Dansce context, le role de lEtat est irrefutable.

urcan Iu. La qualit de la matire premire l'lment principal dans la garantie de la qualit de laproduction vinicole de la Rpublique de Moldova.Dans l'conomie mondiale tout il y a plus souvent des

problmes li avec la qualit de la production. La qualitde la production vinicole dans le plus grand degr dpendde la qualit de la matire premire utilise. Le travaildonn reflte le dynamisme de la qualit de raisin

plantations et le raisin reu, ainsi que son influence sur laqualit de la production produite.

Cuhal R., Cuhal V. Lacquisition des devises par la

Banque Centrale comme instrument de la politiquemontaire: Le cas de la Rpublique Moldova. Danscette travail est analyse le rle des interventions de laBanque Centrale sur le march des devises parlacquisition de la monnaies trangers, qui peutencourag ou priclit lvolution de lconomie dun

pays en ensemble. Lacquisition de la monnaiestrangers par la Banque Centrale comme un desinstruments de la politique montaire et de devise utilis

pour le rglement des fluctuations du taux de changereprsente la source principale pour le compltement desrserve internationale des devises et pour la croissance dela base montaire.

Ciuperc R. Recherches prliminaires dans le milieuANSYS CFX-5 des paramtres fonctionnels du rotorolien hlicodal. Lapparition sur le march de softwaredes codes commercial CFD (Computational FluidDynamics) ouvre des grandes perspectives dans lesrecherches des turbines oliennes. Les plus videntsavantages de la recherche CFD sont: lamoindrissement

de ltape de recherche dobjet dtude, en appliquant lesperformances et les capacits des codes et de la techniquede compte, la rduction jusqu'au minimum des tudes surles modles, ainsi, en laborant le produit dans une


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priode relativement courte. Dans le travail on se prsente les rsultats de la recherche prliminaire desparamtres fonctionnels pour deux variants du concept derotor olien hlicodal.

Preda C. Matriaux textiles obtenus par les procdespas conventionnels. Cette tude on a dfini les textiles

pas tissus qui ont la base un support textile seulementen fibre set en textiles, qui utilisent des appuis en fils, enfibres, en toiles ou en tricots. A aussi, on a mis demodalits de classification des matriaux obtenus par les

procdes pas conventionnels diffents de fels classiques detisser ou de tricoter.

urcan R. La problmatique des relations desentreprises vinicoles avec les fournisseurs de lamatire premire la ncessit de l'intgration de laviticulture et de l'industrie vinicole. A prsent, quand laRpublique de Moldova a pass l'conomie de march,la plupart des entreprises de l'industrie de l'alimentations'heurtent aux difficults sur les relations avec lesfournisseurs de la matire premire. Dans le travail on

prsente les tendances du dveloppement de ces relationset s'installe la ncessit de l'intgration verticale de laviticulture et de l'industrie vinicole.

Balan S. Les contributions la classification des corps

fminins en fonction des caractristiquesantropomorphologiques de la conformation. Dans letravail nominalis est prsente la classification de toutela diversit de corps de femmes en dpendance descaractristiques antropomorphologiques de la

conformation. La classification propose permettrallaboration des bases scientifiques de la projection desdimensions et des formes rationnelles des produitsvestimentaires, en considrant la varit des tipesantropomorphologiques des conformations fminines etlassrance dun niveau de correspondancedimensionnelle entre le corp et le produit vestimentaire.

Lupaco A., Dicusar G., Moanu A., Lupu O.Intensification du processus de schage des griottes.Lanalyse prsente dans ce document a t dirige versllaboration et le dveloppement de la mthode nontraditionnelle de schage durant les deux priodes. On

analyse la cintique du schage durant les deux priodes.On a recherch linfluence de la puissance magntiquesur la vitesse de schage, sur les indices de qualit desguignes sches et sur la consommation dnergie. Cesdonns permettent dvoluer objectivement la mthode deschage des guignes par lutilisation des micro-ondes.

Harnagea F., Mihai A., Malcoci M. Contributions ltude des modifications dimensionnelles souffertespar les solutions adhsives dans le processus deformage de la pellicule solide. On y prsente lesrsultats obtenus la suite de la recherche desmodifications dimensionnelles des solutions adhsives,

par la dtermination de contraction rmanente de la

pellicule adhsive ltat solide, en prenant enconsidration la concentration de la solution adhsive etle temps ncessaire pour la formage de la pellicule solide.En ce sens, pour des concentrations diffrentes de lasolution adhsive, on a tabli des relations de dpendancefonctionnelle en ce qui concerne linfluence de la durede formage de la pellicule solide sur la contractionrmanente, aussi que linfluence simultane des deux

paramtres sur la dimension de celle- ci.

Irovan, M., Ciocoiu, M. Optimisation des paramtresconstructives des produits vestimentaires. Ce travailtraite le problme d'optimisation de la construction du

produit vestimentaire pour les hommes avec les sectorssuprieur du support. On utilise un programme originalde procession des donnes exprimentales, demodlisation mathmatique et reprsentation graphiquede ce model mathmatique. On prsent les rsultats

pratiques d'optimisation de la construction des produitsvestimentaires extrieurs pour les hommes.

Rdulescu B., Rdulescu M.C. Utilisation du processusdusinage vibratoire avec une balle pour la finition desurface extrieur plane. L'industrie roumaine doitdevenir concurrentielle dans le nouveau contexteconomique. Ceci signifie qu'il devrait produire unniveau plus lev d'excution en termes de qualit, cot etargent pour un dveloppement soutenable. Lescaractristiques des pices faites par dformation

plastique superficielle ont de meilleures qualits desurfaces que les pices qui sont faites par : rotation,fraisage les meilleures qualits de surfaces peut treobtenu seulement par la choix adquate des paramtres dergime fonctionnel. Le choix du ceux paramtresdtermine la qualit de la surface du produit.

Amariei V., Bunescu M., Dicusar I. Soudure:technologies, quipement et personnel au niveau desexigences europennes et internationales. Danslouvrage on aborde les sujets prsents et discuts lorsdu Sminaire International organis par lU.T.M. etlAssociation de Soudure de la Rpublique de Moldavie(ASRM) visant promouvoir les technologies modernesde soudure dans la pratique industrielle, lorganisation dela formation et du perfectionnement du personnel dans le

domaine de la soudure, lamlioration des contacts entreles personnes et les groupes de spcialistes qui sontintresss aux problmes de soudure dans diverses

branches de lconomie nationale.

iauu V., Merticaru E. Etude des forces de ractionpour un mcanisme a ambaler. Dans larticle il y a

prsente une mthodologie dvaluation du forces deraction, et linfluence du contraintes redundantes sur cesforces. La mthode de calcule est une mthode de larsistance du matriaux. La mthodologie est exemplifie

pour un mcanisme de la structure dune machine aambaler.


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