| Research Article Published In: August, 2021 | |
| Line-by-Line Sweeping Method in Hydraulic Head Distribution | |
| Farhad Sakhaee* | |
| Research Article Published In: September, 2021 | |
| Numerical Simulation of a Refrigeration Installation Operated in Climatic Conditions of Southwest Algeria | |
| Hami Khelifa*, Khelfaoui Rachid and Benslimane Abdallah | |
| Opinion Published In: September, 2021 | |
| The Value of the Analysis of Scientific and Technical Research in the Strategy of Innovative Development of the World Economy | |
| Yuliia Melnychuk*, Halyna Chyrva and Tetiana Korniienko | |
| Review Article Published In: October, 2021 | |
| Synthesis and Uses of Thioacenes and Oligothiophenes for Organic Electronic Devices | |
| Philip Byers* | |
| Research Article Published In: October, 2021 | |
| Analysis of Influence Factors on Annulus Pressure Changes when using Riserless Mud Recovery System for Deepwater Drilling Operations | |
| Xin Li*, Jie Zhang*, Cuinan Li, Chenghua Zhou, Zhen Zhang and Ben Li | |