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文字编辑如何合理修改新闻标题
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作者 权爱丹 《电视指南》 2017年第22期88-88,共1页
古人云:'石蕴玉而山辉,水含珠而川媚。'新闻的标题可谓石中之玉,水面之珠,被称作新闻的'眼睛'。一篇新闻报道最先映入读者眼帘的是标题。好的标题,它可以鲜明地表现新闻的主题,强化新闻的表达效果,使读者产生共鸣、好奇... 古人云:'石蕴玉而山辉,水含珠而川媚。'新闻的标题可谓石中之玉,水面之珠,被称作新闻的'眼睛'。一篇新闻报道最先映入读者眼帘的是标题。好的标题,它可以鲜明地表现新闻的主题,强化新闻的表达效果,使读者产生共鸣、好奇,从而让人产生'急欲一读'的强烈愿望。 展开更多
关键词 文字编辑 合理修改 新闻标题
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合理运用,只为更好地教与学——以苏教版数学教材为例谈教材的合理运用
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作者 吴秋明 《小学教学研究》 2021年第19期69-70,共2页
教材是教师教学的主要参考与依据,同时也是学生学习的主要载体。它的编写是一项系统性的大工程,不可能每年都进行重新修订,所以会出现一些内容老旧过时的情况,同时也因为编者的专业属性,在某些素材的呈现上也会出现与现实有出入的情况... 教材是教师教学的主要参考与依据,同时也是学生学习的主要载体。它的编写是一项系统性的大工程,不可能每年都进行重新修订,所以会出现一些内容老旧过时的情况,同时也因为编者的专业属性,在某些素材的呈现上也会出现与现实有出入的情况。教师在实际教学中,要进行适当修改,体现教学内容的时代性、科学性、现实性和规律性,凸显它的内在价值。 展开更多
关键词 数学教材 合理修改 教与学
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Microstructure and mechanical properties of strontium-modified ADC12 alloy processed by heat treatment 被引量:5
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作者 HUANG Zhi-xiang1 2 YAN Hong1 《Journal of Central South University》 SCIE EI CAS CSCD 2018年第6期1263-1273,共11页
The effects of heat treatment and strontium (SO addition on the microstructure and mechanical properties of ADC12 alloys were investigated, and two-stage solution treatment was introduced. The results indicated that ... The effects of heat treatment and strontium (SO addition on the microstructure and mechanical properties of ADC12 alloys were investigated, and two-stage solution treatment was introduced. The results indicated that the addition of Sr obviously refined the microstructure of ADC12 alloys. When 0.05 wt% Sr was added into the alloy, the eutectic Si phase was fully modified into fine fibrous structure; a-A1 and fl-A15FeSi phases were best refined; and the eutectic AlzCu phase was modified into block-like AlzCu phase that continuously distributed at the grain boundary. The ultimate tensile strength (UTS) (270.63 MPa) and elongation (3.19%) were increased by 51.2% and 73.4% respectively compared with unmodified alloys. After the two-stage solution treatment (500 ~C, 6 h+520 ~C, 4 h), for 0.05 wt% Sr modified ADC12 alloys, the Si phases transformed into fine particle structure and AlzCu phases were fully dissolved. The peak hardness value of the alloys processed by the two-stage solution treatment was increased by 8.3% and 6.8% respectively compared to solution treatment at 500 ~C and 520 ~C. After the aging treatment (175 ~C, 7 h), the hardness and UTS were increased by 38.73% and 13.96% respectively when compared with the unmodified alloy. 展开更多
关键词 ADC12 alloy STRONTIUM heat treatment microstructure mechanical properties
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Sulfur production from smelter off-gas using CO–H2 gas mixture as the reducing agent over modified Fe/γ-Al2O3 catalysts
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作者 Tingting Ge Cuncun Zuo +1 位作者 Lubin Wei Chunshan Li 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2018年第9期1920-1927,共8页
A series of modifiedγ-Al_2O_3supported iron-based catalysts(M-Fe/γ-Al_2O_3)was developed to reduce SO_2in actual smelter off-gases using CO–H_2gas mixture as reducing agent for sulfur production.Used as modifiers,t... A series of modifiedγ-Al_2O_3supported iron-based catalysts(M-Fe/γ-Al_2O_3)was developed to reduce SO_2in actual smelter off-gases using CO–H_2gas mixture as reducing agent for sulfur production.Used as modifiers,three metal additives—Ni,Co,and Ce were added to Fe/γ-Al_2O_3catalysts.Changes in catalyst structure and active phase were characterized with X-ray diffraction,XPS,SEM,and EDS.The reduction ability of catalysts was exhibited via CO-TPR.The prepared catalysts only need to be pre-reacted for a period of time,eliminating the need for presulfidation treatment.Reaction conditions were optimized in a fixed bed reactor to achieve high SO_2conversion and sulfur selectivity.XRD characterization was carried out to verify the resulting sulfur products.Combining in situ infrared characterization and catalyst evaluation of support and active component,the reaction mechanism was investigated and proposed. 展开更多
关键词 Iron-based catalysts Sulfur production CO-H2 gas mixture Reaction mechanism
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浅谈电力设计院事业部改制管理模式
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作者 甄金泉 《电力系统装备》 2019年第21期191-192,共2页
事业部制管理模式于20世纪20年代初起源于美国通用汽车,其特点是“集中决策,分散经营”,在企业整体战略部署下,将部门按产品、市场进行重新设置并独立生产经营权责,各事业部独立核算,自负盈亏,企业高层统一考核。本文以XX电力设计院事... 事业部制管理模式于20世纪20年代初起源于美国通用汽车,其特点是“集中决策,分散经营”,在企业整体战略部署下,将部门按产品、市场进行重新设置并独立生产经营权责,各事业部独立核算,自负盈亏,企业高层统一考核。本文以XX电力设计院事业部改制为研究对象,根据实际运营情况分析此种管理模式的优劣,提出合理化修改建议。 展开更多
关键词 事业部制 电力设计院 管理模式 实际效果 合理修改建议
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