共查询到20条相似文献，搜索用时 156 毫秒
1.
《西安文理学院学报》2020,(3)
热轧工艺对锆合金成品板材的力学及耐腐蚀性能有着重要影响,以Zr-Sn-Nb合金为研究对象,选取锻造板坯采用620℃和650℃两种热轧温度进行热轧,后经冷轧退火等工序完成成品板材制备.针对不同热轧工艺,研究了热轧后板坯表面状态及成品板材的拉伸性能及耐腐蚀性能.结果表明:对于该Zr-Sn-Nb合金,综合热轧板坯表面状态、成品板材力学及耐腐蚀性能分析,650℃热轧工艺优于620℃热轧,且板材成品率高. 相似文献
2.
鉴于燃煤电厂风扇磨煤机常有大量ZGMn13冲击板退役,研究采用热轧的方法将退役的ZGMn13冲击板改制成护条,不仅可提高风扇磨的可用系数,同时保证了磨煤机出力的恒定.文章讨论了ZGMn13钢热轧的困难和护条热轧工艺的原则,介绍了轧制护条的性能及其良好的使用效果. 相似文献
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4.
王莉 《鞍山师范学院学报》1999,(3)
建立了CIMS下钢铁企业热轧生产批量计划的数学模型 ,根据热轧生产工艺约束将此模型归结为带时间窗口的车辆路径问题 (VRPTW ) ,并给出了一个启发式算法 . 相似文献
5.
通过调研武钢2012年热轧加热炉煤气热值波动情况,计算分析了煤气热值波动对热轧加热炉炉内气氛等技术参数和产品质量的影响,为合理高效利用燃料,提高加热炉效率提供基础技术支撑。 相似文献
6.
田凤英 《商情·科学教育家》2013,(33)
首钢京唐热轧1580是国内设计集成的一条生产线,本文介绍了热轧1580基础自动化系统结构、硬件配置、HMI人机接口等内容,对进一步对基础自动化系统的研究具有较好的借鉴意义. 相似文献
7.
贾懿会 《商情·科学教育家》2013,(29)
随着我国钢材产量的迅猛增长,产能过剩问题日趋显著,吨钢耗能还很高.本文主要介绍了几种热轧工序节能的新技术、新工艺,对于热轧带钢的节能研究有较好的借鉴意义. 相似文献
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王玲 《武汉工程职业技术学院学报》2004,16(3):22-25,30
30MnSi热轧盘条主要用于建筑物基础中，要求具有良好的机械性能、焊接性能、镦粗加工性能，同时表面质量要好，不得有影响其使用性能的各类缺陷。武钢自开发30MnSi热轧盘条后，一度用户反映断裂严重，本文分析了30MnSi热轧盘条断裂的原因并提出了解决的方法。 相似文献
10.
无取向硅钢热轧组织演变规律的研究 总被引：1，自引：1，他引：0
运用形变储能、层错能、交滑移、相变、形变诱导相变和析出、相变应力应变诱导再结晶等概念和有关原理探讨了热轧组织演变规律,并分析了4种不同成分钢种热轧组织的形成机理. 相似文献
11.
The present study explored typically developing children’s understanding of, and attitudes towards, the inclusion of children with physical disabilities (PD) in mainstream settings. The 60 children who participated in the study attended sixth grade in two mainstream primary schools (30 in contact with a child with PD and 30 without such contact). They filled in a questionnaire to measure understanding of disabilities and one to explore attitudes towards inclusion. Analyses revealed that children in contact with a child with PD had a better understanding of the emotional and social problems associated with the presence of PD than the comparison group. Moreover, children in contact with a child with PD expressed more positive attitudes towards the inclusion of children with PD in relation to children without such contact. Results are discussed in terms of the importance of contact in the formation of more positive attitudes towards the inclusion of children with PD. 相似文献
12.
本文报道了湿润育秧、塑料软盘育秧、旱育秧三种育秧方法培育的秧苗素质及育秧成本的差异.结果表明:旱育秧培育的秧苗素质最好,而育秧成本最低. 相似文献
13.
Shernavaz Vakil Evonn Welton Barbara O’Connor Lynn S. Kline 《Early Childhood Education Journal》2009,36(4):321-326
The impact of the emphasis on inclusion in special education has resulted in a higher frequency of young children with autism
being included in early childhood programs with typically developing peers. Many early childhood educators have risen to face
the challenge, and this has resulted in enhanced learning for young children with autism in the regular classroom. This article
focuses on the multiple roles of early childhood educators as they work with the diverse needs of young children with autism
in their classrooms. 相似文献
14.
Ronald A. Beghetto 《Clearing house (Menasha, Wis.)》2013,86(1):21-25
The incidence of Autism Spectrum Disorder (ASD) is increasing in the United States. The rate of diagnosis, combined with the trend towards more inclusive classrooms, means that general education teachers will most likely be teaching some students with ASD. In their teacher preparation course in special education, pre-service teachers learned about characteristics of students with ASD by reading literature with positive portrayals of individuals with ASD. In conjunction, pre-service teachers received instruction on teaching strategies to use in the classroom for students with ASD. By combining good literature with instruction in inclusive teaching practices, teacher educators can model the use of disability literature in the classroom to the benefit of all students. 相似文献
15.
张改亮 《漯河职业技术学院学报》2007,6(1):55-57
人类言语交际中达到共知的方法很多,主要的有六种:(1)进入同一言语社团解码,(2)借助间接话语解码,(3)借助副语言解码,(4)借助身势语言解码,(5)借助公众的语言规范解码,(6)利用原共知对象解码. 相似文献
16.
Susie Russak 《International Journal of Inclusive Education》2016,20(11):1188-1203
The study of additional languages is mandatory for all pupils in most European countries. Usually, the first foreign language is English. This is due to the status of English as a global language. According to inclusion laws, pupils with special educational needs (SEN) should be taught in regular classes with support services by teachers with special education training. Often, however, foreign language teachers lack training and do not know how to adapt teaching methods for pupils with SEN in the regular language learning class. In this study, 109 elementary school teachers filled out questionnaires examining practices and attitudes about inclusion of pupils with SEN in the English as a foreign language (EFL) class in Israel. Findings indicated that pupils with SEN are included in regular EFL classes, taught with the same materials as the class, usually by teachers with no specialised training and no teaching assistants. Teachers are not always encouraged to take in-service courses on how to teach these pupils. No significant difference were found between teachers with and without special education training regarding inclusion practices, but slight differences were found with regards to attitudes towards inclusion of pupils with SEN. The majority of teachers felt that pupils with SEN should be taught in special education settings with specialised materials, and not in the regular education class. These findings raise questions regarding the efficacy of inclusion laws and language learning policies. 相似文献
17.
酵母菌经过不同浓度的盐溶液、低温等不同方式的逆境处理,不同时间内取样,对海藻糖的含量进行测量,得出酵母菌海藻糖含量积累的最佳单一胁迫条件是：1．2mol／LNaCl溶液处理酵母菌30min;0．9mol／L KCl溶液处理酵母菌60min;0．6mol／LMgS04溶液处理酵母菌90min;1．2mol／LCaCl2溶液处理酵母菌90min;0．8mol／LAICl3溶液处理酵母菌6h;0．4mol／LFeCl3溶液处理酵母菌3h;0℃处理酵母菌15s． 相似文献
18.
Rebecca S. Vine Foggo Amanda A. Webster Roselyn Dixon 《British Journal of Special Education》2020,47(2):208-229
Difficulties with social communication may present challenges in gathering data from individuals with autism in research. To encourage individuals with autism to participate directly in research, methods that allow for autistic symptomology should be considered. An online forum was developed to enable adolescents with autism to share their social experiences. Ten female adolescents with autism, aged 12 to 19, engaged with the forum over 12 weeks. Questions were posted weekly and data were collected on the frequency of participant responses, quality of responses, and participants' engagement with each other. Data indicated that the frequency and quality of participants' responses were high, and participants' engagement with each other facilitated the introduction of new topics. The online forum was an effective tool for adolescents with autism to have direct participation in research. It offers promise in future studies as a practical research tool that accommodates the social communication challenges of individuals with autism. 相似文献
19.
Martina Benvenuti Elvis Mazzoni 《British journal of educational technology : journal of the Council for Educational Technology》2020,51(2):436-458
Wayfinding is one of the most important skills that children have to learn in order to safely move in the environment. One problem that 5-year-old children encounter with wayfinding is changing their point of view to that of another person in different position in the same environment, such as that of a person opposite them whose perspective is turned 180° with respect to their own. Robots could help children in learning this skill, since children can instruct them to move in the environment, in predetermined paths, by starting from a rotated perspective. This study compares classic socio-cognitive conflict with a human partner, but in this case with a robot partner, in order to evaluate how a specific activity (instructing a robot to perform a given route) enhances the wayfinding skills of 156 5-year-old children. Using two different robots (humanoid and non-humanoid) and two different conditions (a child and the robot and two children and the robot), the study shows that children who performed the task with the humanoid robot improved their performance significantly better compared with those who used the non-humanoid robot. Furthermore, children engaged in the Socio-Cognitive Conflict situation with another child-outperformed children in the Socio-Cognitive Conflict with robots. Finally, children with low-level performance in the pretest made the greatest improvement both in terms of moves made and time taken to complete the task in comparison with children in the High-Level Group and of the Control Group. 相似文献
20.
因材施教是处理好中小学教学的统一要求与照顾个别差异的矛盾的总体策略。这一策略的具体运作关键在于实施班级授课制下的分层次教学和采用“一般要求加特长”办法。因材施教的逻辑结论之一是：既不能以放弃对学业后进生的培养为代价，更不能以放弃对学业尖子生的培养为代价。 相似文献