JOSA year 15 no. 2 (31) eISSN 2068-3049 |
CONTENTS
SECTION A – Mathematics
1. SURFACE FAMILY WITH A COMMON NATURAL ASYMPTOTIC LIFT (Ergin Bayram, Evren Ergün, Emin Kasap) / 117 2. THE NATURAL LIFT CURVE OF THE SPHERICAL INDICATRIX OF A TIMELIKE CURVE IN MINKOWSKI 4-SPACE (Evren Ergün) / 125 3. IMPROVED PRIME GENERATING ALGORITHMS BY SKIPPING COMPOSITE DIVISORS AND EVEN NUMBERS (OTHER THAN 2) (Neeraj Anant Pande) / 135 4. SOLVING SYSTEM OF SECOND ORDER BOUNDARY VALUE PROBLEMS BY NUMEROV TYPE METHOD (Pramod Kumar Pandey) / 143 5. SOME PROPERTIES OF THE GENERALIZED COMPLETE AND INCOMPLETE BETA FUNCTIONS (Rakesh K. Parmar, Sunil Dutt Purohit, Mukesh M Joshi) / 151 6. SOME APPLICATIONS FROM STUDENT’S CONTESTS ABOUT THE GROUP OF AUTOMORPHISMS OF Zn (Georgiana Velicu, Elena Catalina Grindei) / 155
SECTION B – Chemistry
1. STRUCTURAL HARDENING MECHANISM OF THE NICKEL-BASED ALLOY “HASTELLOY G30” (O. Ben Lenda, F. Sabir, S. Saissi, A. Ibnlfassi, Y.Tamraoui , F. Mirinioui, L. Zerrouk, B.Manoun, E. Saad) / 165 2. DETERMINATION OF Cu AND Zn IN SAMPLES OF GRAPE AND SOIL FROM MURFATLAR VINEYARD (Nicoleta Matei, Antoanela Popescu, Horatiu Miresan, Georgeta Pavalache) / 175
SECTION C – Physics
(Khalid Guissi, Abdelmoumen Tabyaoui, Mohamed Harmouchi, Azeddine Mouhsen, El Mostafa Oualim, Abdellah Boulal) / 181 (Valentin Ghisa, Sorin Moraru) / 191 |