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为提高核桃壳仁混合物的分级效果，对现有核桃壳仁混合物分级设备进行三维实体建模，利用EDEM软件模拟核桃壳仁混合物的分级过程，以筛面上物料的运动速度、质量以及各等级颗粒在统计区域的数量为指标，以振幅、振动频率、振动方向角、筛面倾角为考察因素，对振动筛分级工艺进行优化。结果表明：在振动频率12 Hz、振幅5 mm、振动方向角45°、筛面倾角4°的工艺参数组合下，各等级核桃壳仁的透筛率最高，分级效果最好。In order to improve the grading effect of walnut shell and kernel mixture, the existing classification equipment of walnut shell and kernel mixture was modeled by 3D entity, and the grading process of the walnut shell and kernel mixture was simulated by EDEM. Based on the movement speed, mass of the material on the sieve surface and quantity of particles of each grade material in the statistical area as indicators, the grading process by vibrating screen was optimized with the amplitude, vibration frequency, vibrating direction angle and the sieve surface inclination as factors. The results showed that the screening rate of each grade of walnut shell and kernel was the highest and the grading effect was the best under the conditions of vibration frequency 12 Hz, amplitude 5 mm, vibrating direction angle 45°, and sieve surface inclination 4°.

情报数据作为一种高价值的数据资产，被存储在不同平台，被不同主体所持有，具有高分散性和低可用性特点。由于结构形态与存储方式不同，多源异构情报数据难以实现高效汇聚共享，多主体间情报信息融合和综合分析利用存在较大困难。因此亟须在跨域情报主体间建立安全可信的共享互操作机制，在满足数据确权、安全审计等管理要求的同时，实现情报信息的深度挖掘。针对跨域情报数据可信共享需求与应用特点，提出基于数据对象的情报管理方法，并采用数字对象体系架构及区块链可信访问控制技术构建跨域情报数据可信共享系统，实现多源异构情报数据的视图统一和跨域可信共享，为情报数据融合汇聚、情报信息智能分析提供技术支撑，充分挖掘情报信息的巨大潜力。

2，5-呋喃二甲酸（2，5-FDCA）是生物可降解聚呋喃二甲酸乙二醇酯（PEF）的单体，目前尚未形成廉价的制备技术，其中用己糖二酸脱水环合制备2，5-FDCA是一条具有发展潜力的路线。针对此路线中副产物定性不准确、反应路径研究不完善等问题，通过高效液相色谱、高分辨质谱、核磁共振和傅里叶变换红外光谱分析，开展了副产物定性工作，确定反应体系中的2个主要副产物为糠酸和3-羟基-6-羧基-2-吡喃酮（HOCA）。在硫酸催化下不同己糖二酸脱水环合的反应路径相似，半乳糖二酸易生成副产物HOCA，而葡萄糖二酸钙易生成主产物2，5-FDCA。结合文献报道，提出了己糖二酸脱水环合制备2，5-FDCA可能的完整反应路径。研究工作可为己糖二酸脱水环合制备2，5-FDCA的高效催化体系开发和工业化生产提供指导。

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In order to explore the genetic mechanism and ecological governance model of the landslide and collapse geological disaster on the unstable slope in the Metamorphic rock area of northwest Hubei, the unstable slope in the bedding Metamorphic rock of Sanyongtang was chosen as the research object, on the basis of identifying the geological and deformation characteristics of the disaster body, the possible failure modes and main influencing factors were analyzed, and the mechanism of progressive deformation and failure of bedding metamorphic rock slopes was deeply explored. The stability calculation and evaluation of an unstable slope were conducted using methods such as limit equilibrium, and the results show that the slope was in an unstable state. Based on the concept of ecological management of geological disasters, the comprehensive prevention and control measures have been proposed, including cutting and shaping, foot protection walls, framed anchor, truncation drain, ecological greening and monitoring. Through engineering implementation and effectiveness monitoring, it has been shown that this treatment scheme not only effectively eliminates the safety problem of landslide and collapse geological hazards in the Sanyongtang, but also achieves good environmental greening and beautification effects. Its comprehensive prevention measures, especially the ecological governance mode integrating geological disaster prevention and ecological greening, can provide reference for the reinforcement and slope protection of similar bedding Metamorphic rock unstable slopes. [ABSTRACT FROM AUTHOR]

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[Objective]To establish a method for the simultaneous determination of 33 kinds of veterinary drug residues in mutton by ultra high performance liquid chromatography-tandem mass spectrometry. [Method] The sample was extracted with 90% acetonitrile water ( containing 2. 0% formic acid), purified by Oasis Prime HLB, concentrated, and diluted with mobile phase. Then separated by Waters ACQUITY UPLC HSS T3 column(2. 1 mm×100 mm,1. 8 μm),using 0. 1% formic acid and acetonitrile as mobile phase. Under electrospray ionization source, switching between positive and negative ion modes, in Multiple Reaction Monitoring ( MRM) mode, utilizing the isotope internal standard method for quantification by combining retention time and characteristic ion information. [Result] The linear relationship of the 33 kinds of veterinary drugs was good in the concentration range of 0. 5 - 40. 0 ng / mL( r > 0. 99),and the lowest detection concentration was 0. 08 - 0. 10 ng / mL. Adding standard recovery rates was 83. 7%-115. 0%,the RSD was 0. 58%-11. 49%. [Conclusion]The method has the simple processing,high sensitivty and good reproducibility,and is suitable for the quantitative detection of 33 kinds of veterinary drug residues in mutton. [ABSTRACT FROM AUTHOR]

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【Objective】Understand the cotton boll and fiber quality traits and their correlation of island-upland hybrid long-staple cotton to provide references for breeding high yield island-upland hybrid long-staple cotton.【Methods】New hybrid combinations of island-upland cotton were developed using self-selected insect-resistant upland cotton germplasm line as female parent,and production promoted and applied Xinjiang long-staple island cotton variety as male parent. The cotton boll traits,fiber quality traits and the correlations of the F1 of the 23 island-upland hybrid cotton combinations were analyzed. 【Results】In the 23 island-upland hybrid cotton combinations,the variation range of F1 single boll weight was 3.7-5.0 g. 12 combinations had single boll weight over 4.2 g,with a 9.0% coefficient of variation. The variation range of lint percentage was 20.1%-36.7%. 5 combinations had lint percentage over 30.0%,with a 10.7% coefficient of variation. The variation range for fiber length was 34.5-38.5 mm. 22 combinations had fiber length over 35.0 mm,with a 2.6% coefficient of variation. The variation range of fiber specific strength was 34.8-41.8 cN/tex. 9 combinations had fiber specific strength over 39.0 cN/tex,with a 5.3% coefficient of variation. The variation range of micronaire value was 2.8-4.2. There were 10 combinations with A-level micronaire value and a coefficient of variation of 11.8%. The single boll weight of the island-upland hybrid cotton was extremely significantly (r=-0.683**) negatively correlated with the sterile seed rate,extremely significantly (r=0.660**）positively correlated with seed numbers per capsule and significantly (r=0.495*) positively correlated with capsule numbers per boll. The fiber uniformity of the island-upland hybrid cotton was extremely significantly (r=0.578**,r=0.639**) positively correlated with fiber length and fiber specific strength,and significantly (r=0.506*) positively correlated with elongation rate. Lint percentage was significantly (r=-0.475*) negatively correlated with fiber length. Among 23 island-upland hybrid cotton combinations,W042 × Xinhai No. 53,W046 × Xinhai No. 54 and W047 × Xinhai No. 54 showed simultaneous improvement of cotton boll traits and fiber quality traits.【Conclusion】The simultaneous improvement of yield and fiber quality traits of long-staple cotton can be realized by utilizing the complementary heterosis crossing upland cotton with long-staple island cotton. [ABSTRACT FROM AUTHOR]

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