JOSA year 8 no.2 (9)
eISSN 2068-3049


CONTENTS

 

SECTION A – Mathematics

 

1.      THE EQUIVALENCE BETWEEN SOME DIFFERENTIAL EQUATIONS

      (CRISTINEL MORTICI) / 215

2.      THE RELATION BETWEEN INCIDENCE COALGEBRA AND PATH COALGEBRA OF A PARTIAL ORDERED SET

      (GEORGIANA VELICU) / 218

3.      THE NUMBER 26, BETWEEN 25 AND 27. RESOLUTION OF THE DIOPHANTINE EQUATION y3 - x2 = 2 USING THE FACTORIAL RING Z [i 2]

      (GEORGIANA VELICU) / 224

4.      WAYS TO OBTAIN THE BERNSTEIN-STANCU OPERATORS

      (INGRID OANCEA) / 228

5.      SOME REASONS TO FUZZY APPROACH OF THE CHOICE FUNCTIONS

      (ALINA CONSTANTINESCU) / 231

6.    APPLICATIONS OF Itô STOCHASTICALLY INTEGRAL IN THE EVALUATION OF THE EXPECTATION VALUES OF BROWNIAN MOTION

      (DOINA CONSTANTA MIHAI) / 234

7.      A PARALLEL ALGORITHM FOR SOLVING TRIDIAGONAL LINEAR SYSTEMS

      (DUMITRU FANACHE) / 237

8.      THE POSITION VECTOR OF A POINT EXERCISES

      (DUMITRESCU ION) / 243

9.     THE VECTOR EXILON ACCELERATION ALGORITHM

      (EMIL LUNGU) / 247

10.  THE FIRST ORDER EVALUATIONS IN THE ASYMPTOTIC ANALYSIS OF SEQUENCES

      (ANDREI VERNESCU) / 251

11.   THE COMPARISON OF THE POTENTIAL PROCEDURE W FIXED FRACTION PROCEDURE

      (ALINA CONSTANTINESCU) / 258

SECTION B - Chemistry

 

1.      THE FRIENDLY MATERIALS FOR ENVIRONMENTALLY PROTECTION

      (ANA-MARIA ALBU) / 261

2.      COLORIMETRIC PATTERNS USED FOR ESTABLISHING THE OPTIMUM DOSAGE WHEN STERILIZING THE HERBS WITH IONIZING RADIATIONS

      (R. MINEA, M.I. POPESCU, M. DUMITRASCU, E. SIMA) / 269

3.      THE IMPACT OF THE INDUSTRIAL TECHNOLOGIES ON LIFE QUALITY

      (GEORGETA ALECU, ANDREEA VOINA) / 276

4.      THE ANALYSIS OF THE INTERFACIAL INSTABILITY CONDITIONS IN SYSTEMS LIQUID STEEL- REFINING SLAG

      (PETRE STELIAN NITA) / 283

5.      RADIATION EFFECTS ON POLYPROPYLENE NANOCOMPOSITES CONTAINING TITANIA

      (TRAIAN ZAHARESCU, SILVIU JIPA, CALIN OROS) / 288

6.      COMPATIBILIZATION OF RUBBER BLENDS BY gamma-IRRADIATION PROCESSING

(TRAIAN ZAHARESCU, SILVIU JIPA, MARIUS BUMBAC, LAURA MONICA GORGHIU, CRINELA DUMITRESCU) / 294

 

SECTION C - Physics

 

1.      PIXE ANALYTICAL METHODS APPLIED IN ENVIRONMENTAL

(ION V. POPESCU, DIMITER L. BALABANSKI, M. DANCHEV, V. N. GOUREV, T. BADICA , CLAUDIA STIHI, GABRIEL DIMA, M. PETRE, ANCA GHEBOIANU) / 301

2.      MAGNETIC BEHAVIOUR OF Co IN YCo4-xCuxB COMPOUNDS

      (EMIL BURZO, ILEANA CREANGA) / 308

3.      THE IMPROVEMENT OF THE THERMAL PARAMETERS OF DIFFERENT MATERIALS USING NANO-MATERIALS NETWORKS

      (FLOREA SCARLAT, M. OANE, ILEANA CERNICA) / 312

4.      CONSIDERATION ON THE H (10) AND H*(10) SECONDARY STANDARD CHAMBER CARACTERISTICS

      (F. SCARLAT, A. SCARISOREANU, M. OANE, E. BADITA, E. MITRU) / 317

5.      MINERALOGICAL AND STRUCTURAL FINGERPRINT METHODS OF NANOMINERALS IDENTIFICATION

      (SORIN SILVIU UDUBASA, N. POPESCU-POGRION, ION V.POPESCU, SERBAN CONSTANTINESCU, GHORGHE UDUBASA) / 324

6.      MINERAL CONTENT OF NATIVE VEGETABLES OBTAINED BY ENERGY DISPERSIVE X-RAY FLUORESCENCE SPECTROMETRY

      (CLAUDIA STIHI, ION V. POPESCU, ANCA GHEBOIANU, M.ARINA FRONTASYEVA, ANTOANETA ENE, GABRIEL DIMA, OANA BUTE, VALERICA GH. CIMPOCA, VALENTIN STIHI, CALIN D. OROS, SERGIU DINU, MARILENA VOICU) / 322

7.      A STUDY OF THE TEMPERATURE ON THE TiO2 THIN FILMS SURFACE DEPOSED ON GLASS IN THE MULTIPULSE IRRADIATION REGIME

      (SERGIU DINU, CALIN OROS, GABRIEL DIMA, CLAUDIA STIHI, MARINELA VOICU, MICHEL WAUTELET) / 336

8.      THE THEORETICAL AND EXPERIMENTAL STUDY OF SOME METALS HEATING AND MELTING UNDER THE ACTION OF LASERR RADIATONS

      (SERGIU DINU, CALIN OROS, MARINELA VOICU, GABRIEL DIMA, CLAUDIA STIHI, MICHEL WAUTELET) / 343

9.      THE MONITORING OF 2D-3D TRANSITION FOR InAs/GaAs (001) SELF-ASSEMBLED QUANTUM DOTS BY ATOMIC FORCE MICROSCOPY

(OANA BUTE, VALERICA GH. CIMPOCA, ERNESTO PLACIDI, FABRIZIO ARCIPRETE) / 348

10.  THERMOELECTRIC GENERATOR WITH POLYCRYSTALLINE SILICON MATERIAL

(IULIAN BANCUTA, VALERICA CIMPOCA, ION V. POPESCU, ANCA GHEBOIANU, MARIA CIMPOCA, CLAUDIA STIHI, GHEORGHE BREZEANU) / 354

11.  STUDY TROUGH METALLOGRAPHICAL METHOD AND X-RAY FLUORESCENCE TECHNIQUE, ON THE SOME ROMAN BROOCHES DISCOVERED AT TOMIS-CONSTANTA

(V. GHISA, ION V. POPESCU, MARIUS BELC, MARIANA BAHRIM) / 360