超声波传播速度与溶液浓度关系的研究

利用超声光栅测量声速原理,针对不同浓度的食盐（NaCl）和葡萄糖（C2H12Q6）溶液,详细研究了超声波声速与溶液浓度的关系。实验结果表明,由0％至饱和范困．声速随浓度的增加单调递增,并显现出良好的线性关系。通过规划分析,得到25℃下声速与浓度的线性规划方程。溶液浓度每升高1％,超声波在食盐溶液中的传播速度提高10．777m／s．在葡萄糖溶液中的传播速度提高3．1863m／s。论文将线性回归方法应用于超声光栅实验数据处理,并且提出了一种测量液体浓度的新方法。     

采用回弹及超声波检测混凝土构件强度方法

工程施工中混凝土强度检测一般通过两种方式检测,一种是取芯试压,此种方式可直接反应混凝凝土的真实强度。但对混凝土结构会造成一定程度破坏,或因构件含筋率较高,不易取出完整的素混凝土芯样,操作起来有一定的难度;另一种方式是采用现场回弹,此种方法常因仪器或操作人员操作方式不当影响混凝土回弹数值的准确性,只能作为混凝土强度值参考指标。本文通过介绍南广高铁混凝土现浇梁采用回弹超声波检测综合法的检测方式,能真实检测混凝土实体的强度值。     

论“道家认知治疗”的偏颇

认知疗法是用逻辑思雏方式处理采访者的问题,道家用直觉思维方式认识主体内在对象,“道家认知疗法”既违背道家思维方式,也不符合认知疗法思维方式,是不可取的。遭家养生原则要求人们在整体、必要、自然的范围内行事,认知疗法要求来访者在具体事件的范围内思考问题,“道家认知疗法”用道家养生原则,代替认知疗法是行不通的。一个心理咨询和治疗理论在吸取其他理论充实自己,不能改变原来的名称,“道家认知疗法”违背了这一点。     

Effective delivery of therapeutic interventions: findings from four site visits

This project follows a survey into the role of UK educational psychologists (EPs) in delivering therapeutic interventions to children and young people. Four educational psychology services (EPSs) that identified themselves as providing effective therapeutic practice were selected on the basis of their qualitative responses to the survey. Site visits included analysis of service documentation, an interview with the Principal Educational Psychologist (PEP) and focus groups with EPs and with stakeholders, multi-agency partners and commissioners of EPSs. Thematic analysis yielded a number of key themes. Those relating to how the service context can support the delivery of therapeutic interventions included: contracting and promoting; leadership; opportunities to practice; supervision; time and resources; and training.     

Going on a journey: a case study of nature therapy with children with a learning difficulty

Therapy is usually described as an indoor activity, centring on verbal dialogue between therapist and client(s). Based on a qualitative study conducted with a group of children with learning difficulties, this article presents a way in which therapy can take place creatively in nature, which serves not only as a therapeutic setting but also as a non‐verbal medium and partner in the process. Using participants' voices to highlight the programme's protocol and impacts, the article presents elements from the innovative framework of nature therapy, offering practitioners concepts and methods that can be incorporated into their practice.     

Mechanochemical degradation of potato starch paste under ultrasonic irradiation

1 Introduction a As the most abundant reserve polysaccharide in plants, starch consists of a mixture of two α-glucans. Amylose and amylopectin are two macromolecular components of starch granules. Amylose, a poly (1-4)-α-D-glucan, is essentially linear …     

高温高压汽缸连接螺栓松弛评估新方法

针对火电厂常用高温高压螺栓材料25Cr2Mo1V钢常因松弛失效导致脆性断裂事故这一现象,从损伤力学观点出发,结合无损探伤理论,提出用超声波与声发射特性评估火电厂高温高压汽缸连接螺栓松弛损伤失效方法,并使所测损伤参变量实现量化。     

谈阅读疗法对当代大学生人才塑造的作用

对阅读疗法的起源、发展及其运用进行了阐述,并针对当代大学生成才中出现的问题予以分析,提出了高校开展阅读疗法的具体措施,探讨了高校开展阅读疗法的意义与功效。     

试谈依赖型人格障碍的治疗

依赖型人格障碍(DPD)的治疗问题是一个比较困难,同时又极具有现实意义的问题。我们应从分析依赖型人格的特点入手,确立依赖型人格的治疗目标,进而实施从认知—行为疗法、团体疗法、药理疗法等多方面的治疗,并在此基础上,关注在依赖型人格治疗中出现的一些问题。     

茉莉花中黄酮化合物的超声提取与测定

采用超声波法从茉莉花中提取黄酮类化合物并得出最佳提取条件,物料比为1∶25,80％乙醇做溶剂,超声提取时间为50min时黄酮提取率较高.用紫外光谱法测定黄酮化合物的含量,芦丁标准溶液线性回归方程为A=0.9561C-0.0051,相关系数r=0.9990,此方法的回收率为98％～100％,变异系数0.015％,方法快速,准确度与精密度均较高.