Thamar University Journal of Natural &Applied Sciences (TUJNAS) is a peer-review journal. TUJNAS is an open-access journal and it is published twice times a year by Thamar University, Thamar, Yemen. It aims at publishing original research contributions covering pure science, Agriculture, Engineering, Medicine, Environment, and Computer science. In order to reach the widest possible readership, the Journal publishes all contributions in English.

The journal has the following international standard codes:

ISSN-print: 2073-0764
ISSN-linking: 2073-0764
ISSN-online: 2959-4340

International Document Number: DOI

For more information about the journal, please contact us at the following email address:



Vol. 7 No. 7 (2017): 7 Volume

Published: 2023-01-28

Occurrences of Perlite Deposits in Yemen

Khaled Mohammed Thabet Al-Selwi (Author)

97 - 111


Amin Saif and Ali Qassem (Author)

113- 127

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