Chinese Science Bulletin

This paper presents an integrated approach to environmental assessment, risk mapping, and digital passportization of rocket stage fall zones using a geospatial platform based on Post GIS. The platform supports environmental data collection, storage, validation, analysis, and visualization, including geo referencing, data integrity control, pollutant normalization, calculation of integrated indicators, spatial analysis, and hotspot detection. An integrated environmental index (ERI) was developed using component-specific pollution indices, environmental hazard weights, a spatial impact factor, a

This paper investigates the balancing of an opening roller and evaluates the condition of the opening roller blade with constant and variable pitch during the opening process of semi-finished leather products. A constructive method was implemented to determine the reaction forces of servo constraints that account for misalignments while facilitating the restoration of broken constraints. Extended equations for a mechanical system that includes servo constraints, using the principles of parametric release, were developed. A generalized mathematical model was created for machines equipped with s

This article examines numerical modeling of the stress state of earth dams, taking into account the influence of the soil base. A developed methodology and program were used to calculate the distribution of strains and stresses in the dam body and base. A static analysis of a tall earth dam with its base operating in Uzbekistan was performed under the principal loads. The physical and mechanical properties of the base soils were determined experimentally (by drilling). The problem was solved numerically using the finite element method. The results of the study are presented as isolines of vert

This article presents the findings of research conducted to establish the parameters for a disk digger designed for the continuous planting of fruit tree seedlings, based on the laws and standards of practical and agricultural mechanics. The authors have developed a machine design diagram specifically for this purpose. The machine comprises several key components: a frame equipped with a suspension device, a deep cultivator-furrow cutter, a disk digger, a conical roller-compactor, a seedling hopper, a seat, a track cutter, and a screen. The research identifies the parameters necessary to achie

This article delves into the strategic development of tourism initiatives in Thailand aimed at delivering authentic Japanese cultural experiences. With Japan's rich cultural heritage and distinctive traditions drawing global interest, Thailand is an ideal conduit for fostering bilateral cultural exchanges. This study elucidates various methodologies for enhancing cultural authenticity in tourism offerings through a detailed analysis of contemporary tourism trends, visitor expectations, and the incorporation of Japanese customs within Thai contexts. The investigation encompasses initiatives suc