共查询到20条相似文献,搜索用时 388 毫秒
1.
2.
依据高职人才培养模式及物理化学的课程特点,通过教学方法的改进,教学内容的整合、激发学生的兴趣,提高物理化学课程的教学质量. 相似文献
3.
《工业技术与职业教育》2016,(4)
通过动车组技术专业基于校企合作、虚实一体的人才培养模式构建与实施研究,从如何使校企双方都能够积极主动地参与校企合作、建立长效机制、解决校企双方责任、权益不对等问题、提高高职院校教育教学质量等方面入手,探究与实践动车组技术专业基于校企合作、虚实一体的"职场课堂"人才培养模式,开发相应的课程体系,对推动高职院校的教育教学改革、探索校企合作新模式、促进校企深度合作、推动校企合作的持续发展、提高高职院校教育教学质量具有一定的理论价值和实际应用价值。 相似文献
4.
5.
动车组检修技术专业基于产教融合、虚实一体的"职场课堂"人才培养模式构建,从提高高职院校教育教学质量方面入手,优化虚实一体、学做交融、工学结合的"四阶段工学交替"人才培养方案,按照职业人才成长规律,实施校企双主体育人,培养高素质"高铁工人"和"动车医生"。通过校企深度合作,探索一条适合多种技术技能训练和多元能力培养的有效途径;促进高职院校实践教学能力的提高;促进校企资源共享。 相似文献
6.
7.
8.
9.
10.
11.
12.
13.
Mahmood Naderi 《The Journal of Adhesion》2013,89(1):78-104
This article presents the results of experiments conducted to assess the effects of aging under dry laboratory conditions, underwater storage, cyclic freeze-thaw, and temperature changes on the adhesion between the repair and the substrate concrete. The repair systems considered for these studies included ordinary sand/cement (S/C) mortar, with and without bonding agents, two polymer modified cementitious mortars, and two resinous mortars. The specimens were concrete slabs of 600 × 300 × 100 mm dimensions with saw cut face 600 × 300 mm on which a repair layer of 20 mm had been applied. In order to eliminate the effects of surface texture and surface strength of the concrete on the adhesion of repair systems, repair applied surfaces were all saw cut surfaces of concrete with 28-day design compressive strength of 65 MPa. Tensile bond strengths of these specimens were measured using a direct tensile test (pull-off) method. The results indicated that the tensile bond strengths of different repair systems under dry laboratory conditions, and stored underwater, ranged from 1.51 to 5.27 Mpa. Exposure to 300 cycles of freeze-thaw and to 200 cycles of temperature changes resulted in 6 to 100 percent reduction in their tensile bond strengths. 相似文献
14.
15.
《The Journal of Adhesion》2008,84(1):78-104
This article presents the results of experiments conducted to assess the effects of aging under dry laboratory conditions, underwater storage, cyclic freeze-thaw, and temperature changes on the adhesion between the repair and the substrate concrete. The repair systems considered for these studies included ordinary sand/cement (S/C) mortar, with and without bonding agents, two polymer modified cementitious mortars, and two resinous mortars. The specimens were concrete slabs of 600 × 300 × 100 mm dimensions with saw cut face 600 × 300 mm on which a repair layer of 20 mm had been applied. In order to eliminate the effects of surface texture and surface strength of the concrete on the adhesion of repair systems, repair applied surfaces were all saw cut surfaces of concrete with 28-day design compressive strength of 65 MPa. Tensile bond strengths of these specimens were measured using a direct tensile test (pull-off) method. The results indicated that the tensile bond strengths of different repair systems under dry laboratory conditions, and stored underwater, ranged from 1.51 to 5.27 Mpa. Exposure to 300 cycles of freeze-thaw and to 200 cycles of temperature changes resulted in 6 to 100 percent reduction in their tensile bond strengths. 相似文献
16.
选择浴缸应该是一件非常开心的事,如果你现在正为未来的新居忙碌的话.而要改变一下老式浴室的模样,添置一个浴缸也是最简捷的方法了.想想你有多少预算,趁着新年伊始,为自己和家人添点新情趣吧!…… 相似文献
17.
18.
19.
以稻秸秆粉、稻壳粉、衫木粉、竹粉,PP、PE-HD、PE-LD膜为原材料,采用模压成型工艺制备不同填料及不同塑料基体的木塑复合材料,并对复合材料力学性能进行分析.结果表明:无油墨PP基复合材料的综合力学性能较好,而含油墨PE-LD基复合材料的冲击韧性较好.稻秸秆粉作为填料增强无油墨PP复合材料效果最佳,制得稻秸秆粉/PP综合力学性能较好,而稻壳粉/PP复合材料冲击韧性较好. 相似文献
20.
不同溶剂对宁夏不同煤阶煤萃取效果研究 总被引:1,自引:0,他引:1
《化工设计通讯》2017,(11):22-23
煤的溶剂萃取,尤其是温和条件下的溶剂萃取是研究煤的大分子结构和组成的非常有效的方法。根据宁夏煤种的特点,针对性地选取了汝箕沟煤和固原王洼的煤样为研究对象,分别以CS_2、四氢呋喃、丙酮、乙二胺及其中两种溶剂的复合溶剂为萃取剂对两种煤样进行了常压沸点下的索氏萃取,研究时间和溶剂配比对萃取率的影响,选取最佳萃取条件。通过对原煤、萃取残渣和的红外对比分析表明,萃取后残渣中含有的脂肪烃和脂环烃的量明显减少,而矿物质很多都还保留在残渣中。 相似文献