17 articles in this issue
Firmanul Catur Wibowo, Ade Nur Maemunah, Hadi Nasbey, Bayram Costu, Binar Kurnia Prahani, Niki Dian Permana, Dina Rahmi Darman, Achmad Samsudin
Students' understanding to learn science on the concept of light refraction is experiencing serious problems because of the unobservable of light particles. The research object to be resolved in this study is to improve the concept of light refraction usi... see more
Dewa Ngakan Ketut Putra Negara, I Made Widiyarta, I Gusti Agung Kade Suriadi, I Gusti Komang Dwijana, I Made Dwi Budiana Penindra, I Gusti Ngurah Putu Tenaya, I Gusti Ketut Sukadana, Anton Saladin Ferdinand
The primary cause of rising CO2 concentrations in the atmosphere is the use of fossil fuels in motor vehicles and factory activities in industry. CO2 levels in the atmosphere can be controlled and reduced by using low-carbon energy and capturing and stori... see more
Angie Guevara-Munoz, Diego Hincapie-Zuluaga, Jorge Sierra-Del Rio, Miguel Angel Rodriguez-Cabal, Edwar Torres-Lopez
Hydropower is an important source of energy in Latin America. Many countries in the region, including Brazil, Peru, Colombia, and Chile, rely heavily on hydropower plants to meet their energy needs. However, there are also challenges related to the use of... see more
Suphaphorn Panikhom, Atirarj Suksawad, Thitiporn Janda, Adirek Jantakun
This study describes a simple design for a single active element sinusoidal oscillator with a quadrature signal. A current conveyor transconductance amplifier (CCTA), a single resistor, and two grounded capacitors are used in the first circuit. The second... see more
Ahmad Indra Siswantara, M. Hilman Gumelar Syafei, Muhammad Arif Budiyanto, Candra Damis Widiawaty, Adi Syuriadi, Tanwir Ahmad Farhan, Sulaksana Permana
As the largest palm oil producer in the world, Indonesia has a promising potential to produce green fuel through the Fluid Catalytic Cracking (FCC) process. A novel FCC configuration, FCC Proto X 3, which combines a riser reactor and downer reactor i... see more
Dmitriy Demin
The object of research is the temperature regime of melting in a cupola. The synthesis of optimal control of such an object is associated with the presence of a problem consisting in the complexity of its mathematical description and the absence of proced... see more
Tran Van Dua
Woodworking industry plays an important role in the development of Vietnam’s economy. The efficiency of woodworking process depends a lot on the machinery used in the woodworking process. Selecting the best option among a variety of machines is tedious an... see more
Nguyen Hong Son, Tran Trung Hieu, Nguyen Manh Thang, Huynh Nhu Tan, Nguyen Tien Can, Pham Thi Thao, Nguyen Chi Bao
Machine tools are indispensable components and play an important role in mechanical manufacturing. The equipment of machine tools has a huge effect on the operational efficiency of businesses. Each machine tool type is described by many different criteria... see more
Bui Thanh Danh, Nguyen Van Cuong
The article presents briefly findings in researching methods for determining dynamic stress of the bars in the main structure of gantry crane installed on the cap of bridge pier to install and launch SUPER-T girder. In order to study the dynamic stresses ... see more
Ruslan Iskakov, Sultanbek Issenov, Gulmira Kubentaeva
The article deals with the issue concerning the working bodies of technological equipment designed for grinding pieces and particles of feed raw materials. The most profiTable feed raw materials are by-products and waste materials of animal origin, w... see more
Sunardi, Moch. Agus Choiron, Sugiarto, Putu Hadi Setyarini
The incidence of fishing boat accidents in Indonesia is very worrying, with 342 people dying during 2018–2020. Based on this, it is crucial to investigate the construction strength of fishing vessels against the possibility of a collision. In this study, ... see more
Abduvali Khaldjigitov, Umidjon Djumayozov, Otajon Tilovov
The main parameters characterizing the process of deformation of solids are displacements, strain and stress tensors. From the point of view of the strength and reliability of the structure and its elements, researchers and engineers are mainly interested... see more
Wibowo Wibowo, Ary Setyawan, Yusep Muslih Purwana, Bambang Setiawan
The use of various types of rigid pavement is widespread because of its superiority in resisting heavy load vehicles. However, traffic loading complexity and subgrade response cause uncertainty during the design process. The presence of water in expansive... see more
Aris Ansori, Sudjito Soeparman, Denny Widhiyanuriyawan, Teguh Dwi Widodo
The utilization of biopolymers for energy applications continues to attract researchers, due to the unique properties of biopolymers that are easily modified, such as cassava starch (CS) biopolymer that has hydroxyl molecular chains. However, the brittle,... see more
Novruzova Sudaba, Inglab Aliyev, Fariz Ahmad
Since most of the fields in the Absheron peninsula of the Republic of Azerbaijan are at the final stage of development, an inevitable reduction in hydrocarbon production is expected. An increase in the proportion of formation water in well production, the... see more
Baizak Isakulov, Hamit Abdullaev, Almagul Mukasheva, Uzakbai Akishev, Gulsaira Ordabayeva
The creation of the slag-alkaline arbolite's structure is examined in this study, which is based on measurements of the deformation of the mortar component, contact zone, and filler. Composites made of slag and alkaline arbolite are among the lightest bui... see more
Wahyono Suprapto, Yudy Surya Irawan, Sudjito Suparman, Muhammad Rafi Amrullah, Pratama Auliasyah, Aditya Rafi Ramdhani
This study aims to control the characterization and mechanical properties of smelting Al-Cu Alloy through Hold-Melt Time. This research uses aluminum scrap and copper wire scrap to produce quality as-cast ingots, clean the environment, and increase waste ... see more