Tiandi Science & Technology (China)

A Survey of Smart Contract Vulnerability Detection Based on Tree Representation

Smart contracts, characterized by automation, transparency, and decentralization, can establish efficient, secure, and reliable blockchain fund management and data processing mechanisms, playing a crucial supporting role in blockchain application scenarios. However, security issu...

Research and application of directional fracturing roof cutting for lateral thick and hard roofs in shallow-buried large-section roadways

Abstract Aimed at the severe strata behavior hazards caused by the occurrence of lateral thick and hard roofs in shallow-buried large-section roadways, a directional fracturing and roof cutting technology for lateral thick and hard roof zones in shallow-buried large-section coal...

Solution-Processed Nanocomposite GO−AgNPs/AgNWs Transparent Conductive Films for Multifunctional Flexible Optoelectronics

Abstract As application scenarios and usage conditions become increasingly complex, traditional indium tin oxide materials are limited in meeting diverse application demands due to their low flexibility and high cost. This study proposed a ternary nanocomposite strategy combining...

Screening and ARTP mutagenesis-based breeding of high-cellulase-producing strains

Abstract While lignocellulose is an abundant renewable resource, the discovery of microorganisms capable of degrading lignocellulose is important for its full utilization. In this study, 26 soil samples were collected from Jigongshan National Nature Reserve, Xinyang, China. The C...

Dynamic pressure control and GA-based PID optimization study of fuel supply system for methanol-fueled ships

The search for clean alternative fuels to replace conventional high-emission marine fuels is a pressing issue in the context of carbon neutrality. Methanol, owing to its ability to be stored at ambient temperatures, is considered one of the promising substitutes for traditional f...

MWMOTE-MLLM: A cluster-level difficulty-aware oversampling multimodal large language model framework for imbalanced fault diagnosis of rolling bearings in horizontal reactors

The horizontal reactor serves as a critical piece of equipment in petrochemical production and operates under extreme conditions, including high temperature, high pressure, and strong corrosion. Under such conditions, rolling bearings are prone to faults caused by excessive vibra...