以核燃料化学工艺学为例,对面向工程教育专业认证的课程考核方式进行改革与实践.分析了传统考核方式现状,提出了考核模式改革思路与对策.新的课程考核模式通过强化过程考核,建立明确的过程考核评分细则,提供公平有效的个人过程考核成绩积分,从多方面、多角度对学生的综合学习能力进行评价.考核方式改革后,取得了较好的教学效果,提高了作业质量和课程考核通过率.

军事理论作为大学进校第一课,对大学生社会主义核心价值观的塑造和增强“四个自信”有重要的意义.通过正确地定位课程、精心地设计教学内容、规范组织教学实施,打造具有特色的军工文化教育,将思政要素融入教学,并延伸到第二课堂,以达到“课程承载思政”“思政寓于课程”的课程改革目标.

ZIF‑8@Ag composites were prepared by in situ growth and modified with 4‑ATP as efficient probe. The Raman inactive TNT initiated the high Raman scattering of non‑resonated 4‑ATP through the π‑π conjugate between 4‑ATP and TNT.

Direct writing technology has the advantages of safety,batch and precise graphics,and it is the trend of future development of precision and efficient charge forming for energetic micro devices.Based on hexanitrohexaazaisowurtzitane (CL-20) based explosive ink,the effect of driving pressure and outlet diameter on the extrusion rate was investigated by the combination method of the simulation using Ansys software and the direct writing deposition experiment.The direct writing deposition data were analyzed by Matlab software.The effective direct wring parameters were obtained by an interpolation analysis method.The mathematical model describing the direct writing deposition rule was established.Results show the prepared CL-20 based explosive ink is a non-Newtonian fluid with a viscosity range of 10 Pa · s to 350 Pa · s.When the shear stress is greater than 650 Pa,the loss modulus is larger than storage modulus gradually.When the driving pressure is greater than 350 kPa,the viscosity of the CL-20 baded explosive ink decreases,making the change rate of the extrusion rate increase.When the outlet diameter is bigger than 0.6 mam,decreasing the extrusion energy loss of the ink decreases makes the change rate of the extrusion rate increase.The established direct writing parameters relation formula is u1 =0.00047 ×α1 0.6516 ×p1.5291,which indicates that the driving pressure is greater than the effect of outlet diameter on the extrusion rate.

本文提出了当下辐射防护与核安全专业工程教育模式存在的问题,并根据教育部对卓越工程师培养计划具体要求,结合我校辐射防护与核安全卓越工程师班的教学实践,从培养理念、培养方式、培养内容和培养师资建设等方面探讨了辐射防护与核安全卓越人才的培养路径与策略.

Quality of blasting stemming was one of the most important impact factors influencing blasting effect.Mechanism of borehole blasting stemming,stemming length,movement law of stemming,stemming material nature,stemming for influencing of blasting effect,numerical simulation of stemming and existent problems of stemming are summarized and analyzed.Research results may be reference to improving blasting effect.

Mechanism of explosion crack crack and extend are analyzed theoretically,site blasting test of vertical columnar explosive charge in soil was done,research on explosion crack state of blasting cavity wall was done,statistic on explosion crack parameter of columnar cavity walls and semi ellipsoidal cavity walls at bottom were done.The result indicates that explosion crack on columnar cavity walls are much wide and deep,crack on bottom semi ellipsoidal cavity walls are compactness,much shallow and narrow,index decreased of crack quantity with the increase of decouple coefficient;crack depth and opening width of columnar cavity walls first increased then decreased with the increase of decouple coefficient,maximum of opening width was 2.50cm,maximum of depth was 9.24cm;crack depth and opening width of bottom semi ellipsoidal cavity walls decreased with the increase of decouple coefficient.

分析了凿岩机械和气动工具腐蚀的状况,阐述了金属材料的腐蚀机理;针对凿岩机械和气动工具腐蚀现象,从设计、使用、维护和保养等方面提出了凿岩机械和气动工具防腐的途径和措施。

The main performances of the APX-RS high-speed camera is described.According to observation of high-speed camera experiments of the detonation propagating in Nonel tube,the motion of interlayer fill soil of rock mass and the explosion processes of underwater explosion etc,the aplications of APX-RS high-speed camera in blasting,such as the detonation process,the movement of explosion products and the development of underwater explosion cavity etc.were introduced and the technical measures was proposed.The result of application indicated that the APX-RS high-speed camera is the better camera for high-speed observation.

从爆破效果和经济效益两个方面,研究了将光面爆破和切缝药包爆破技术用于边坡开挖。通过模型试验和现场实验,分析了切缝药包的爆破机理,及其在边坡开挖中的应用,并与光面爆破进行了比较分析。

Influence mechanism and research situation on initiation charge location for blasting effect are analyzed.Hole-bottom blasting technique is greatly superior to hole-up blasting technique for bulk yield,unit explosive consumption,reducing rate of blast shock wave.It can provide certain basis for the further promotion and the application of hole-bottom blasting technique.

In the paper,the fracture failure characteristic of rock was firstly studied by the impact damage of rock samples under shear stress,and then the cutting seam cartridge blasting was numerically simulated.The results showed that shear stress was obvious in the lancing of the cutting seam tube,which make the blasting crackle formed from the lancing at first,thus have the effect of directional fracture to seam.

The Structure of column charge has the general character of blasting the utilization Rate of detonation wave,blasting effect and blasting cost are detemined by the position of Primary explosives in the hole.Bottom-hole detonation is better than the other ways.

Free surface is one of the key factors influencing blasting effect.The influence of area and quantity of free surface on blasting vibration and effect are summarized.The impacting test conducted indicates that free surface contributed to improve blasting effect.The research results have some reference value to engineering practice.

In blasting of slope rock mass with weak intercalation,interlayer filled soil moves at a high speed along weak intercalation and engenders cavity in degradation,driving and compression of blasting gas.It can reduce stability of slope rock mass.Blasting tests of concrete model involving interlayer filled soil is introduced in this paper.Motion process of interlayer fill soil in blasting effect is shot by high speed camera system.Effect laws of burden motion speed of weak intercalation were analyzed.

Teaching assessment plays a very important part in college English teaching,and effective formative assessment can encourage students' learning autonomy,improve their ability,and stimulate their creativity as well.Based on the foreign and domestic documentary studies,first the definition and types of assessment were reviewed,and then the necessity,feasibility and efficacy of the application of formative assessment in the process of college English teaching were analyzed.

The further credit system reform has been carried out consistently,and the work concerning university textbooks is facing the unprecedented challenges.Lots of problems occur: it is hard to obtain the sum of textbooks,purchasing plan is undeterminate,and it is difficult to accorde stocks with the purchasing plan.So,it's necessary to advance the level of textbooks management.For instance,trying to launch a textbooks store is a manipulable way.

The author analyses the vibration of the steel rope under dynamic load during mine hoisting, and has derived the vibrating differential equation for the hoisting rope, determines the vibrating frequence and the vibrating mode function of the rope through solving the equation, and discusses them in the light of some examples.