Periodicals of Engineering and Natural Sciences (PEN)

Periodicals of Engineering and Natural Sciences (ISSN: 2303-4521) is an international open access single-blind review journal published online.

Publication frequency: Semiyearly until June 2019. Quarterly since June 2019.

Indexing: Scopus, DOAJ, Google Scholar...

Digital Object Identifier DOI: 10.21533/pen


Vol 9, No 4 (2021)

Table of Contents

Articles

Wakas S. Khalaf, Batool Atiyah Khalaf, Noorah Osama Abid
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5-22
Mohammad Zainal
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23-30
Olga Zhuravleva, Maria Sukhova, Andrey Karanin, Evgenia Chernova, Yuliya Gazukina
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31-43
Gulnaz Moldabayeva, Saule Abileva
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44-60
Olga Shkolna, Olha Sosik, Yuliia Shemenova, Viktoriia Oliinyk, Olha Konovalova
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61-80
Nurgul Montayeva, Sarsenbek Montayev, Ainur Taudaeva, Muratbai Ryskaliev, Sabit Zharylgapov
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81-97
Svetlana Martynova, Svetlana Kasatkina, Larisa Tsymbal
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98-116
Ergali Rustem, Kuat Yestaev, Manshuk Abdimomynova, Ainur Abduvalova, Altynbek Tassybayev
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117-133
Ainur Montayeva, Askar Zhussupbekov, Sarsenbek Montayev, Zhankeldi Nashiraliyev
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134-148
Lyazzat Makhmudova, Marat Moldakhmetov, Aynur Mussina, Adilet Kanatuly
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149-165
Esra Ehsan, Razali Ngah, Nurul Ashikin Binti Daud
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166-179
I. Idaryani, et al.
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180-190
Laith T. Khrais, Abdullah M. Alghamdi
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191-198
Ola Hussein Abd Ali Alzuabidi
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199-206
Harith M. Ali
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207-213
Beket Kenzhegulov, Raigul Tuleuova, Aigul Myrzasheva, Nurgul Shazhdekeyeva, Galymzhan Kabylkhamitov
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214-241
Alua Tanirbergenova, Batyr Orazbayev, Yerbol Ospanov, Sholpan Omarova, Ildar Kurmashev
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242-258
Viktor Danchuk, Hanna Shlikhta, Irina Usova, Maiya Batyrbekova, Gulnara Kuatbayeva
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259-276
Vasilisa Makarova
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277-290
Grigoriy Mun, Gulzhakhan Yeligbayeva, Ulantay Nakan, Aigul Amitova, Ibragim Suleimenov
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291-304
Kazhmukhan Arynov, Zhailaubay Zhubatov, Gulnur Saruarova, Nazgul Nurtaza, Ulpan Berikova
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305-322
Maria Dmytrenko, Svitlana Nesterenko, Roman Oleksenko, Larysa Yeremenko, Olena Vasylchenko
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323-346
Veniamin A. Pogodin, Lev N. Rabinskiy, Sergey A. Sitnikov
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347-356
Fatima Mahmoud Hama
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357-367
Ghaidaa Jabbar Habi
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368-374
Wilmar Montilla Ocampo, Elizabeth Suescun, César Jesús Pardo Calvache
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375-385
Hugo Armando Ordoñez, Hugo Armando Ordoñez Erazo, Armando Ordoñez
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386-391
Bibinur S. Akhymbayeva, Daniyar G. Akhymbayev, Dilda K. Nauryzbayeva, Bulbul K. Mauletbekova
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392-416
Arseniy V. Babaytsev, Alexey N. Astapov, Andrey V. Ripetskiy, Minggong Sha
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Andrei Gorelov, Fedor Vasilyev
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Anatoly A. Zotov, Yan Naing Min, Polina F. Pronina
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Sergey A. Astakhov, Vasiliy I. Biryukov
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