JOSA year 13 no. 4 (25)
eISSN 2068-3049

 

CONTENTS

 

 

 

SECTION A Mathematics

 

 

1.      OPERATION TRANSFORM FORMULAE FOR GENERALIZED FRACTIONAL HILBERT TRANSFORM

(Akilahmad Sheikh, Alka S. Gudadhe) / 339

2.     EXTENDED FRACTIONAL FOURIER TRANSFORM OF DISTRIBUTIONS OF COMPACT SUPPORT

(Alka S. Gudadhe, A. Naveen) / 345

 

 

SECTION B Chemistry

 

 

1.      STUDY CONCERNING THE RHEOLOGICAL BEHAVIOR OF SUNFLOWER OIL

(Ioana Stanciu) / 355

2.      RANKING OF UNIVERSITIES IN ROMANIA AND THE EMERGING DISORIENTATION

(Silviu Jipa, Laura Monica Gorghiu, Crinela Dumitrescu, Calin Oros) / 361

3.      VISCOSITY IMPROVERS FOR CONCENTRATED SOLUTIONS OF A POLY (ALKYL METHACRYLATE)

(Ioana Stanciu) / 371

 

 

SECTION C Physics

 

 

1.      A METHOD TO DETERMINE A SINGLE NUMERICAL VALUE FOR REACTIVE POWER IN NON-LINEAR SYSTEMS

(Ali Khati Dizabadi, Mohammad J. Jafarian, Aref Doroudi) / 375

2.      EXPERIMENTAL STUDIES OF PHOTON ABSORPTION IN SILICON AND NIOBIUM

(Safdar Ali, Ghulam Nabi) / 385

3.      RADIATIVE PROPERTIES OF COPPER THIN FILM AS RADIATIVE COOLING MATERIALS

(Mourad Benlattar, El Mostafa Oualim) / 391

4.      EVALUATION OF HEAVY METALS LEVELS IN EVERNIADIVARICATA THALLUS, GROWING ON SPRUCE AT DIFFERENT ALTITUDES IN BUCEGI MOUNTAINS, BY EDXRF SPECTROMETRY

(Gabriela Busuioc, Diana Silaghi, Ivona David, Lucica Grigora Toma, Carmen Cristina Elekes, Ion Dumitru) / 397