Scientific reports of Bukhara State University


Optical systems developed by the authors and used for many years to study the polarization properties of anisotropic molecules are presented. Both systems are designed for visible and close to ultraviolet spectral regions. In this case, the double Fresnel parallelepiped plays the role of the achromatic quarter wave plate. They are used in the Jasco-20 dichrograph after the Pokels cell. Causing the sensitivity of the device increases from deg·sm-1 to 3 the magnitude of differences of the optical density.

First Page


Last Page



1. Ahmad I., Fasihullah Q., Vaid F.H.M. // J. Photochem and Photobiol. B: Biology 2004. V. 75. – P. 13-20.

2. Ahmad I., Fasihullah Q., Vaid F.H.M. // J. Photochem and Photobiol. B: Biology 2005. V. 78. – P. 229-234.

3. Ahmad I., Ahmed S., Sheraz M. A., Vaid F. H. M. J. Photochem. Photobiol. B: Biology, 2008.V.93. – P. 82-87

4. Ahmad, M. A. Sheraz, S. Ahmed, S. H. Kazi, T. Mirza, M. Aminuddin. Res. Pharmasci., 2011. V.1. – P. 11-15.

5. Astanov S., Sharipov M.Z., Fayzullaev A.R., Kurtaliev E.N., Nizomov N. Spectroscopic study of photo and thermal destruction of riboflavin. Journal of Molecular Structure 2014. V.1071. – P. 133-138.

6. Astanov S., Sharipov M.Z., Faizullaev A.R., Kurtaliev E.N., Nizomov N. Thermal Destruction of Riboflavin in Different Aggregate States. 2014. V.81(1). – P. 37-42.

7. Astanov S.X., Prishepov A.S., Niyazxanova B.E. Spektralno-opticheskie svoystva assotsiatov indigokarmina i tartrazina v rastvorax. // Prikl. spektr., 1990, T.53, № 5. - S. 800-806.

8. Astanov S.X., Qosimova G.K., Turdiev M.R. Spektroskopicheskie proyavleniya samosborki pishevogo krasitelya tartrazina. J. Razvitie nauki i texnologiy. 2017. №3. - S. 93.

9. Astanov S.X., Shamsiev R.X., Fayzullaev A.R. Pishevie krasiteli (sposobi polucheniya stabilizatsii). - T.: Razvitie nauki i texnologiy, 2014. - S. 60-74.

10. Belkov M.V., Losev A.P. Spectroscopy Letters.1978. V. 11. – P. 653-669.

11. Brzezinska E., Mielczarek C., Pajak W. Analysis of acid-base properties of riboflavin calculated via semi-empirical methods. Acta Poloniae Pharmaceutica. 2008. V.65 (1). – P. 59-63.

12. Vellyuz L., Legran M., Grojan M. Opticheskiy krugovoy dixroizm. - M.: Mir, 1967. - 318 s.

13. Davidson A., Norden B. Chemical. Scripta., 1975. V.7. – P. 167.

14. Jasko Model J-20 Recording Spectropolarimetr. - Japan Spectroscopic CO, Engeneer's manual, LTD, 1972.

15. Kasimova G.K., Astanov S., Kurtaliev E.N., Nizomov N. Structure of self-assembled riboflavin molecules in solutions. Journal of Molecular Structure 2019. V.1185. – P. 107-111.

Included in

Life Sciences Commons



To view the content in your browser, please download Adobe Reader or, alternately,
you may Download the file to your hard drive.

NOTE: The latest versions of Adobe Reader do not support viewing PDF files within Firefox on Mac OS and if you are using a modern (Intel) Mac, there is no official plugin for viewing PDF files within the browser window.