In the long distance pressure pipeline, the sudden change of instantaneous pressure caused by the rapid change of liquid velocity is called water hammer, which seriously threatens the safe operation of hydropower station. In this paper, the development and calculation methods of...
Open access
Research Article10.9734/jerr/2022/v23i12778
Aim: To explore the use of the work-study techniques in the efficiency improvement in the productivity of a firm or industry. A firm's profit can be increased through productivity improvement by reducing non-value-added operations and adopting a new process for a particular activ...
Open access
Research Article10.9734/jerr/2022/v23i12777
Hydraulic vibratory hammer using the working principle of vibratory pile sinking is an important equipment in pile foundation construction, which can be used for sinking and extracting piles. It has a wider range of application than the drop hammer for pile sinking by the impact...
Open access
Research Article10.9734/jerr/2022/v23i12776
A large number of solid waste stockpiles produce pollution and harm to the atmosphere, soil, water bodies, and biosphere. Ceramic pellets are an emerging material with excellent performance and wide application. Ceramic pellets have many good properties, so they are widely resear...
Open access
Research Article10.9734/jerr/2022/v23i12775
Object detection is the crucial task in the field of computer vision. In recent years, intelligent driving technology and intelligent transportation system have set off a boom. Therefore, vehicle object detection has also become a hot research task in the field of computer vision...
Open access
Research Article10.9734/jerr/2022/v23i12774
This study was informed by the lack of country-specific studies that established the knowledge level in geosynthetics among fresh graduates with a bachelor’s degree in civil engineering or allied programmes in developing countries. Thus, this study seeks to establish the knowledg...
Open access
Research Article10.9734/jerr/2022/v23i12773
In this paper, we determine the different possible couplings at the discontinuities of the two circular and rectangular waveguides using the trapez-method. The development of the normal modes of the fields allows us to obtain the amplitude of the fields of the transverse electric...
Open access
Research Article10.9734/jerr/2022/v23i12772
The need to reduce the increasing demand for crushed granite as coarse aggregate as well as the need to safeguard the environment from degradation has given rise to various researches on alternative materials that can serve the same purpose while minimizing environment hazard. Th...
Open access
Research Article10.9734/jerr/2022/v23i12771
Ramon-Gabriel Garcia-Martinez, Tania-Lucero Reyes-Ortiz, Gloria-Karina Herrera-Cortina, Eduardo Belmonte-García, Lizbeth Calihua-Pacheco & Santiago-Omar Caballero-Morales·Journal of Engineering Research and Reports·2022
Within logistics and the COVID-19 pandemic, the distribution of vaccines represented an important challenge as time was vital to attend the needs of the world population. This aspect involved an efficient the distribution chain between vaccine producers and consumers. For this pu...
Open access
Research Article10.9734/jerr/2022/v23i12770
Hydrocyclone is an equipment that uses a cyclone or tangential injection flow process with centrifugal forces to separate liquids of different densities. The denser liquid move downwards in a spiral path into an underflow chamber, while clean liquid which is less dense move upwar...
Open access
Research Article10.9734/jerr/2022/v23i12769