Results 111 to 120 of about 1,579,839 (226)

210例慢性特发性荨麻疹患者血清食物特异性IgG检测的临床意义

open access: yesZhongguo shiyan zhenduanxue, 2012
慢性特发性荨麻疹是一种常见的慢性过敏性皮肤疾病,病因复杂且难以明确,其临床表现为反复发生的瘙痒性风团、红斑,严重者可伴有呼吸困难及胃肠道反应;在某些方面,荨麻疹可引起与冠状.动脉疾病类似程度的不适。为研究慢性特发性荨麻疹发病原因与食物不耐受的关系,于2010年6月-2011年6月间,检测210名慢性特发性荨麻疹患者的血清食物特异性IgG抗体水平,现将结果报告如下。
武斌
doaj  

尾流的光学特性研究与测量

open access: yes, 2001
关于尾流的直接文献基于军事秘密而极少见到。国外从二战以来就对尾流的特性着手进行研究,但研究内容主要是尾流的声学特性、尾流的几何特性、尾流中气泡形成和溶解及其在尾流声学特性中所起的作用等。本文对舰船尾流具有的多种特性进行了概括和总结,同时,为了便于将尾流的光学特性从横向与声学特性进行比较,对尾流气泡幕的声学理论进行了详细的描述。在此基础上,对光在水中的特性、水对光的散射中气泡的影响等内容较为细致的阐述。目的是希望为该研究方向的可能读者提供一个较为完整的参考资料,也便于将光通过纯净水、海水 ...
张建生
core  

Is Time Travel Possible? Accidental Signs as Sociolinguistic “Wormholes”

open access: yesInternational Journal of Applied Linguistics, EarlyView.
ABSTRACT Sociolinguistics primarily focuses on deliberately staged public signs, while relatively less attention has been given to ephemeral and non‐deliberate signs in urban environments. This study investigates “ accidental signs,” which are hidden historical texts suddenly exposed by unpredictable events.
Ge SONG (宋歌)
wiley   +1 more source

光纤翘曲特性测试仪

open access: yesGuangtongxin yanjiu, 1999
本文介绍了我们采用显微侧视法制作的光纤翘曲特性测试仪,并分析了光纤翘曲特性对光纤熔接特性的影响。
雷非
doaj  

L2 Chinese Grammatical Acquisition and Processing: A Substantive and Methodological Review

open access: yesInternational Journal of Applied Linguistics, EarlyView.
ABSTRACT This study presents a systematic review of 92 empirical studies on Chinese as a second language (CSL) in grammatical processing and development, synthesizing their substantive foci and methodological characteristics. The results reveal consistent scholarly attention to cross‐linguistic topics, with less focus on features that are distinctively
Shaohua Fang, Yi Xu, Jiani He, Jia Wang
wiley   +1 more source

血小板输注无效患者血小板特异性糖蛋白抗体表达的实验研究

open access: yesZhongguo shiyan zhenduanxue, 2016
目的探讨血小板输注无效(PTR)患者血小板特异性糖蛋白抗体的表达情况。方法采用ELISA方法检测56名临床上确诊为PTR患者的血小板特异性糖蛋白抗体、应用PCR方法检测其血小板特异性抗原(HPA)1-6,15基因分型。结果 56名PTR患者检出血小板特异性糖蛋白抗体,8例表达阳性(占14.3%),包括血小板特异性糖蛋白GPⅡb/Ⅲa阳性7例,GPⅠa/Ⅱa阳性1例、GPⅠb/Ⅰx阳性1例、GPⅣ阳性1例。结合8例患者的抗体检测反应格局和HPA抗原基因型结果分析抗体的特异性为:4例存在抗-HPA3b ...
杨帆   +7 more
doaj  

数字图书馆以用户为中心的特征属性 [PDF]

open access: yes, 2003
本文从特征属性的角度探讨了数字图书馆的发展历程,着重分析了第三代数字图书馆以用户为中心特征属性的表现形式 ...
李春旺
core  

Co‐Teaching in a Virtual Intensive Study Language Programme: Insights From Team Ethnography

open access: yesInternational Journal of Applied Linguistics, EarlyView.
ABSTRACT As virtual study abroad becomes an increasingly important form of international education, little is known about how transnational teaching is organised and sustained across institutions. Using activity theory as an analytical framework and team ethnography as methodology, this study examines a virtual intensive study (VIS) programme delivered
Zhu Hua   +7 more
wiley   +1 more source

广州地区儿童过敏性紫癜血清变应原特异性IgE检测分析

open access: yesZhongguo shiyan zhenduanxue, 2014
目的探讨广州地区过敏性紫癜患儿变应原组成情况,为临床寻找诱因及预防提供依据。方法采用德国敏筛变应原检测系统,检测广州地区161例过敏性紫癜患儿血清变应原特异性IgE和总IgE含量 ...
黎雅婷   +4 more
doaj  

Reconceptualizing Language Teacher Well‐Being: An Ecological Role‐Interaction Model

open access: yesInternational Journal of Applied Linguistics, EarlyView.
ABSTRACT In recent years, research on language teacher well‐being (LTWB) has expanded rapidly. However, the conceptual relationship between general teacher well‐being (TWB) and LTWB remains insufficiently theorized, particularly in contexts where teachers simultaneously occupy subject‐specific and general education roles.
Misato Saunders   +2 more
wiley   +1 more source

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