- 111 articles

In both military and civilian domains, the spacecraft is commonly employed to accomplish various tasks. With the ongoing advancements in mil-itary strategy and civilian technologies, task environments have become increasingly complex. Consequently, there’s a growing trend across all sectors towards integrating water and air operations to enhance task completion. With the continuous progress of biology and mechanics, the ... Read more.

The ubiquitous phenomenon of friction-generated energy, often considered to be of little practical value, has led to the development of a new technology known as friction nanogenerators (FNGs). This innovative technology offers significant potential for the sustained power supply and large-scale harvesting of wave e... Read more.

With the increasing prominence of pollution issues in offshore waters, marine ranching plays a crucial role in restoring marine ecosystems and ensuring the sustainable use of fishery resources. This paper provides a comprehensive bibliometric analysis of global marine ranching research. The study indicates that policy is the primary driver of the industry's development. ... Read more.

 This study investigates the predictive accuracy of different three-dimensional rock strength criteria. The research focuses on the comparison between ZZ criteria and HBWW criteria against the HB, PH, and GP criteria. The results demonstrate that the ZZ and H...... Read more.

This paper investigates the stability of stratified shale boreholes in the Longmaxi Formation of the Silurian system in the Sichuan Basin, with shale gas reservoirs ranging in thickness from 65m to 516m. Considering that borehole stability is a crucial factor in drilling operations, this study combines theoretical... Read more.

This study investigates the current state of tanker transportation in China, with a particular focus on identifying key operational routes for inland tankers. Additionally, it analyzes shipping activities along Russia's Northern Arctic and Far East maritime routes. By comparing the operational practices of both countries, the research highlights the potential for m... Read more.

Theoretical mechanics, fundamental to engineering, is crucial for technological advancement in areas like mechanical design, energy, and aerospace. Despite its broad application, challenges arise when addressing complex systems or interdisciplinary studies, where current models and methods may fall short. The purpose ... Read more.

The economic efficiency of ships is an important indicator of transport vessels, and estimating the economic efficiency of ships is an important task in making investment decisions during the early stages of shipbuilding. This article, based on semi-theoretical and semi-empirical formula methods using the prototype ship of the RST12C project as a basis, estimates and anal... Read more.

Rod pumping is commonly used in oilfield development. In recent years, with the development of oilfield development projects, the cost of oil extraction has significantly increased. Therefore, it is crucial to adopt measures to improve the efficiency of mechanical extraction in order to improve the efficiency of oilfi... Read more.

3D printing technology has a very wide range of applications in various fields, when rapid manufacturing and chain stability are required in production; 3D printing technology c.an fulfil both conditions. However, limited by printer specifications, medium to large components must be printed in sections.<... Read more.