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As an active research direction in the field of neural engineering, brain-computer interface (BCI) has important research significance in biomedicine, neural rehabilitation, intelligent robot and other fields.The human-computer shared control technology based on BCI combines the advantages of human and machine intelligence, and has many advantages compared with the direct control BCI control technology.The human-computer shared control based on non-invasive BCI was classified and introduced from different points of view, and the future research direction and development trend of the human-computer shared control system based on BCI were forecasted to provide new ideas and directions.

To effectively support the Healthy China Initiative, China is exploring the development of a geohealth survey. However, due to the insufficient understanding of the concept of geohealthy, aunified working philosophy and technical approach have not yet been formed, which restricts the promotion of this work throughout the country.This paper reviewed the latest research results on the investigation and evaluation of soil and water quality and the prevention and control of endemic disease by employing literature research, qualitative analysis and comparative analysis. Special attention was paid to the research ideas and latest progress of endemic diseases such as fluorosis, arsenism, goiter (including cretinism), Kashin-Beck disease and Keshan disease, which are widely distributed and highly influential in China. It was found that the geohealth survey takes the water and soil quality affecting human health as the core index, which is the major difference between it and the traditional geological surveys.In the geohealth survey, we should ① Strengthen the application of water-rock interaction research methods and groundwater flow system analysis methods, ② Emphasize the analysis of the migration, transformation, and exposure pathways of elements in the earth superficial spheres of lithosphere-soilosphere-hydrosphere-atmosphere-biosphere, and ③ Insist on the principles of combining earth system science and life science, combining systemic monitoring of multi-factors with single-factor dominant observation, combining investigation and monitoring of geological environment and human health indicators, and combining comprehensive regional investigation with the typical case study. It is suggested to orderly promote the tasks of geohealth survey, monitoring, evaluation, zoning and intelligent services, and deploy keyworks such as ensuring safe water supply, providing healthy drinking water, developing high-quality water, delineating inferior plots, developing high-quality arable land, and planning agricultural parks with beneficial elements. A cross-scale background investigation of water and soil quality, resource attribute analysis and social value assessment was proposed, with varying focus on different scales: overall control at the regional scale, fine characterization at the watershed scale, key anatomy monitoring at the village and town scale, and exploration and demonstration of engineering measures at the point. A conceptual framework of the relationship between water and soil quality and human health was constructed, and the control thresholds of key factors were screened to meet the population′s health needs for safety, fairness, happiness, culture, and sustainability. The results of this study clarify the core tasks and main directions of the current geohealth survey, providing a reference for decision-making in the advancement and deployment of this work, which is still in the exploratory stage.

China Geological Survey has organized and implemented 1:50 000 standard map hydrogeological survey with an area of more than 40000 square kilometers in Yimeng Mountain area. And it carried out a large amount of water prospecting and well drilling demonstration work in villages and towns with serious water shortage, obtained rich geological data and gained a new understanding of groundwater flow systems. Under the influence of Mesozoic and Cenozoic structures, the faults and folds, extensional detachment and magmatic intrusion occurred in Yimeng Mountain area, formed a series of graben-semi graben basins characterized by overlapping in the south and faulting in the north, and finally formed today's typical "basin-mountain" karst hydrogeological structure and the relatively independent karst groundwater system, which taking basin as unit. In order to study the development characteristics of groundwater flow system in Yimeng Mountain area, Laiwu Basin was selected as a typical study area. On the basis of the field geological survey, through comprehensively analyze the geomorphic units, the three-dimensional spatial distribution of water bearing rock groups, groundwater level, hydrochemistry, and water isotope results on the north and south sides of the basin, this paper comprehensively discusses the characteristics of multistage karst groundwater flow systems with typical "basin-mountain" structure in Yimeng Mountain area. The results show that, the karst groundwater in Laiwu Basin presents a "centripetal" runoff from the outer periphery to the center of the basin. Affected by human activities, controlled by geological structure and aquifer distribution, the characteristics of groundwater flow systems between the north and south sides of the basin are different. There are mainly intermediate and local groundwater flow systems in the south of the basin, while a single local groundwater flow system is developed in the north of the basin, however, it occupies nearly 1/2 of the groundwater sources that have been explored and demonstrated. In addition, it is found that at the lowest erosion base level of Dawen River, the voids separated by regional detachment structure and hydrothermal mixing, together with rock layer, interlayer fissures and bedding dissolution voids, form a three-dimensional karst groundwater network, which influence the circulation path and depth of karst water. Guided by this understanding, the completion rate of exploration production combined wells has reached 86%, which strengthens the combination of theory and practice of groundwater flow system theory in hydrogeological work in bedrock mountainous areas in North China.

China is a big producer and consumer of grains and oils. The development of high-yield grains is closely related to chemicals such as pesticides. With the improvement of people’s living standards, residents’ requirements for foods have changed from ‘security of output’ to ‘equal emphasis on quality and output’. In order to strengthen the management of grain quality and safety, it is urgent to comprehensively understand the status of pesticide pollution in grains and develop more efficient, convenient and rapid detection technologies. This paper briefly summarizes the characteristics of pesticides and pesticide residues, analyzes the current status of the use and residues of pesticides in raw materials for grains and oils in China, reviews the existing rapid detection methods and technologies for pesticide residues in grains, and compares the advantages and disadvantages of various rapid detection methods and products. This review is expected to provide a reference for quality inspection during grain purchase.