Results 1 to 10 of about 3,399 (104)

Learning Chinese in a study abroad context: The case of ritual congratulating

open access: yesInternational Journal of Applied Linguistics, Volume 33, Issue 3, Page 459-475, November 2023., 2023
Abstract In this paper, we explore how and why the realisation of the ritual act of congratulating may turn out to be challenging for foreign learners of Chinese. Congratulating and other ceremonial ritual acts are not only used when someone participates in an actual ritual event: they are also required when they are mentioned in mundane events, like ...
Juliane House, Dániel Z. Kádár
wiley   +1 more source

Early incisor lesions and Equine Odontoclastic Tooth Resorption and Hypercementosis: Reliability of radiographic findings

open access: yesEquine Veterinary Journal, Volume 55, Issue 2, Page 261-269, March 2023., 2023
Summary Background In clinical practice, early diagnosis of Equine Odontoclastic Tooth Resorption and Hypercementosis (EOTRH) and other resorptive incisor diseases is difficult to achieve. The radiographic appearance of subtle pathological changes has not been described in detail and might be confused with age‐related changes.
Louisa Albers   +4 more
wiley   +1 more source

特高压直流隔离开关载流技术研究

open access: yesGaoya dianqi, 2022
1 120 kV特高压直流隔离开关的核心问题在于其通流能力,而载流系统的接触部位温升大小决定了隔离开关的通流水平。文中从接触电阻理论出发,研究了接触压力与接触点数对接触电阻的影响规律,设计了一种双层环形触指/触头载流结构,开发了环形触指的制造加工工装及加工工艺流程,并在环形触指/触头的基础上设计出了高载流技术的新型1 120 kV特高压直流隔离开关。为进一步研究隔离开关载流性能,文中对触指/触头接触部位进行了独立的电—热耦合分析,结果显示载流系统最大温升61.56 K,满足国标规定的温升值65 K。最后,
李宇鹏   +13 more
doaj  

International clinical practice recommendations on the definition, diagnosis, assessment, intervention, and psychosocial aspects of developmental coordination disorder – Chinese (Mandarin) translation

open access: yesDevelopmental Medicine &Child Neurology, Volume 61, Issue 3, Page E1-E35, March 2019., 2019
目的 本国际临床指南由欧洲残疾儿童学会(the European Academy of Childhood Disability,EACD)牵头制定,旨在解决发育性协调障碍(developmental coordination disorder,DCD)的定义、诊断、评估、干预以及与社会心理方面的临床应用关键问题。 方法 本指南针对五个领域的关键问题,通过文献综述和专家团队的正式讨论达成共识。为保证指南的循证基础,以“机制”、“评估”和“干预”为检索词, 对2012年更新以来提出的最新建议以及新增的“社会心理问题”和“青少年/成人”为检索词进行检索。根据牛津大学循证医学中心证据等级 (证据水平 [level of evidence, LOE]1–4) 将结果进行分类,最终转化为指南建议。并由国际 ...
Jing Hua   +6 more
wiley   +1 more source

船用断路器抗颠震分析与试验研究

open access: yesGaoya dianqi, 2023
船用断路器作为舰船电力系统重要的控制和保护设备,直接影响舰船系统的安全可靠性能。由于工作环境的特殊性,船用断路器不可避免地会受到海浪重复拍打引起的颠震载荷。为探究颠震载荷对断路器整机可靠性以及触头系统接触性能的影响,以某型船用真空断路器为研究对象,运用理论推导、数值分析和试验验证等方法探究断路器在颠震载荷下的动态响应特性,寻找船用断路器结构设计的薄弱环节和探究触头系统的颠震规律,为船用电器设备抗颠震设计提供了理论依据和参考。
王军   +5 more
doaj  

Research on digital discretion—The subjectification of street‐level work in public administration

open access: yesReview of Policy Research, Volume 42, Issue 1, Page 122-148, January 2025.
Abstract The article presents a systematic review of scholarly articles (n = 168) focused on digital discretion—how digital technologies affect the discretionary autonomy of street‐level bureaucrats. Two analytical tasks are performed concerning how digital transformation has affected (1) the relations between top‐down governing and the work of street ...
Jörgen Johansson
wiley   +1 more source

Olfactory receptors in Bactrocera species for sustainable fruit fly management: A review and future perspectives

open access: yesPhysiological Entomology, Volume 49, Issue 2, Page 67-90, June 2024.
Olfactory receptor neurons (ORNs) in insect antennae project axons to glomeruli in the antennal lobe for odor processing by local interneurons. Uniglomerular projection neurons (PNs) relay processed odor information to the mushroom body and lateral horn.
Saleem Jaffar, Guy Smagghe, Yongyue Lu
wiley   +1 more source

GIS红外温度传感系统的设计表征研究

open access: yesGaoya dianqi, 2021
文中设计并制造了一种可用于测量气体绝缘金属封闭开关设备(gas insulated switchgear,GIS)触头以及母线等关键位置温度的红外测温系统,可对GIS设备的过热故障进行监控和预警。本测温系统设计红外传感测温模组对温度数据进行模数转换、滤波、校准、补偿后通过远距离无线电(long range radio,LORA)协议进行无线传输。通过定制化的红外介质窗口和密封系统实现红外信号的通路并保证设备的气密性和可靠性。将测温模组安装于红外介质窗口,实现对测温模组的安装固定。针对触头和母线发射率低 ...
李盈   +6 more
doaj  

高低温条件下隔离开关触头耐磨特性研究

open access: yesGaoya dianqi, 2021
以隔离开关关键零部件触头为研究对象,通过±60℃高低温试验平台,测试了±60℃环境温度下触头表面镀层特性、接触电阻等通流参数,建立数据统计理论模型,定性研究高低温对触头通流能力的影响。建立温度与触头镀银层磨损量和接触电阻的关系曲线,分析了触头镀银层和接触电阻随温度变化情况,研究了接触电阻增大的机理,并以此提出了减小磨损量的相关措施,为提高隔离开关通流能力的提升奠定理论基础。
李宏楼   +13 more
doaj  

多影响因素下开关柜梅花触头的电接触性能分析

open access: yesGaoya dianqi, 2022
开关柜是配电系统的重要组成部分,主回路梅花触头的安全运行直接关系到开关柜的可靠性。为了提高梅花触头电接触的导电性和减摩抗磨的能力,在其接触部位进行了镀银处理,镀银层的厚度、粗糙度和硬度参数直接决定着梅花触头的使用寿命,因此有必要针对梅花触头电接触性能与不同镀银层厚度、粗糙度和硬度之间的关系进行深入的研究。文中以KYN28-12开关柜内的梅花触头为研究对象,运用有限元分析法建立了三维电—热—力的多物理场耦合模型,分析了在不同镀银层厚度、粗糙度和硬度条件下梅花触头的温度场分布特性 ...
祁海洋   +6 more
doaj  

Home - About - Disclaimer - Privacy