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An injectable composite bone cement was fabricated by employing sol-gel derived mesoporous borosilicate bioactive glass spheres (MBGS) as a solid phase and sodium alginate (SA) solution as a liquid phase. Its effects of the B2O3/SiO2 ratio in MBGS on its textural properties and workability, compressive strength and bioactivity of bone cement were characterized. It is found that with the increase of boron content, the specific surface area of MBGS increases from 161.71 m 2 /g to 214.28 m 2 /g, and the average pore size and total pore volume also increase, which accelerates the Ca 2+ release and rapidly crosslinks MBGS and SA. Thus, the workability, mechanical property and in vitro mineralization of bone cement is significantly improved, as the setting time is shortened from 21 min to 9 min and the compressive strength is enhanced from 3.4 MPa to 4.1 MPa. Comprehensive performance of all aspects, BC-30 bone cement showing good workability, mechanical properties and in vitro mineralization ability, displays the optimal component. Therefore, improving the textural properties of MBGS is an effective method to enhance the workability, compressive strength and bioactivity of composite bone cement.

Landslide susceptibility mapping is one of the most important aspects of landslide early warning and prediction. Therefore, it is very necessary to improve the accuracy of landslide susceptibility assessment by focusing on the mapping results. Besides, as the obvious spatial and temporal heterogeneity of regional landslide susceptibility, revealing and mastering the spatial and temporal distribution characteristics of landslide susceptibility and analyzing their possible genetic mechanisms, have significant guidance for the development of landslide prevention measurements. With the integrated application of RS and GIS technology, firstly, this paper acquires and manages the landslide impact factors in the study area, then the regional landslide susceptibility zonation map is drawn, and finally, the spatiotemporal characteristics of the regional landslide susceptibility distribution are analyzed. It is shown that RS and GIS can play very important roles in the regional landslide susceptibility mapping and spatiotemporal characteristics analysis.

Abstract. In this paper, the design of comprehensive laboratory related to the major of measurement and control technology and instrument in the Meteorology and Oceanography College of PLA University of science and technology was elaborated detailed. Combining with the characteristics of facing to the atmosphere and ocean field, the comprehensive laboratory design ideas and methods was proposed for saving the experiment and practice investments, improving the teaching level and qualities, cultivating cadets' practice and innovation abilities. A series of teaching and research achievements demonstrate that the comprehensive laboratory plays an important role in improving the teaching level and research ability. It can provide references for the design of comprehensive laboratory in other fields of science.

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