JOSA year 11 no.1 (14)
eISSN 2068-3049

CONTENTS

SECTION A – Mathematics

1. A NEW GEOMETRIC INEQUALITY AND ITS APPLICATIONS

(Jian Liu) / 5

2. ESTIMATES FOR   AND APPLICATIONS

(Cristinel Mortici, Chao-Ping Chen) / 13

3. EXPONENTIAL SERIES AND COMBINATORIAL PROBLEMS

(Vasile Pop) / 15

4. A PARALLEL SOLUTION OF TRIDIAGONAL LINEAR SYSTEMS BY CONTINUED FRACTIONS

(Dumitru Fanache) / 21

5. CONSCIOUSLY INTENDED REASON FOR INTELLIGENT FAITHFUL  EVOLUTION

(Tudor - Razvan Niculiu) / 31

6. ON A CONJECTURE BY BENCZE

(Cristinel Mortici) / 41

7. GENERALIZATION OF PTOLEMY’S THEOREMS

(Mihaly Bencze) / 45

8. FINITENESS PROPERTIES FOR THE PATH COALGEBRA ASSOCIATED TO A POSET

(Georgiana Velicu) / 49

SECTION B – Chemistry

1. MODELING THE TEMPERATURE DEPENDENCE OF DYNAMIC VISCOSITY FOR RAPESEED OIL

(Ioana Stanciu) / 55

2. COMPLEX SPECTRAL CHARACTERIZATION OF ACTIVE PRINCIPLES FROM MARIGOLD (Calendula officinalis)

(Ioana-Raluca Bunghez, Rodica-Mariana Ion) / 59

3. AEROSOL SAMPLES ELEMENTAL ANALYSIS FROM SOME ROMANIAN URBAN BY PIXE TECHNIQUE

(Ion V. Popescu, Agata Olariu, Claudia Stihi, Gabriel Dima, Ioana Daniela Dulama, Carmelia Petre, Raluca Stirbescu) /65

4. THE NON METALLIC INCLUSION STUDY IN CAR STEEL SAMPLES AND DETERMINATION OF ALUMINUM AND CALCIUM SOLUBLE/ INSOLUBLE PART 

(Mariana Bahrim, Ion V. Popescu, Anca Gheboianu) / 69

SECTION C – Physics

1. COMPARISON OF LOW FIELD ELECTRON TRANSPORT CHARACTERISTICS IN InP, GaP AND Ga_0.52In_0.48P CRYSTAL STRUCTURE

(Hadi Arabshahi) / 75

2. NECESSITY OF GIS SYSTEM FOR ELECTROMAGNETIC FIELD MANAGEMENT IN GALATI

(Luminita Moraru, Lucia Marica) / 85

3. COMPUTERIZED SYSTEM FOR CONTROLLING PACKAGE ENCASING IN THE FOOD INDUSTRY

(Cristian Logofatu, Viviana Filip, Daniela Cioboata, Danut Stanciu) / 91

4. CONSIDERATIONS REGARDING ECHOLOCATION OF BATS

(Ana-Maria Chiselev, Luminita Moraru) / 97

5. ENERGY STORAGE SYSTEMS

(Elena Raducan, Luminita Moraru) / 103

6. GENERALIZED STATISTICS IN SYSTEMS OF INTERACTING PARTICLES

(Dragos-Victor Anghel) / 109