Results 51 to 60 of about 1,703,447 (187)
UF-100尿沉渣分析仪尿液有形成分检测假阳性结果原因分析及其对策
Zhongguo shiyan zhenduanxue, 2007 目的探讨影响UF-100尿沉渣分析仪尿液有形成分检测的影响因素,寻找导致其测定假阳性结果的原因及其对策。方法分别采用UF-100尿沉渣分析仪和显微镜检查法对1000例临床尿液标本进行检测,对比两种方法的检测结果,分析引起UF-100尿沉渣分析仪测定假阳性的原因。结果UF-100尿沉渣分析仪检测管型假阳性率为7.3%,粘液丝是引起其假阳性的最主要原因;红细胞假阳性率为11.9%,一定量的结晶、细菌和酵母样菌易被仪器错误报告为红细胞;白细胞的假阳性率为5.9%,小圆上皮细胞 ...
石晶, 赵敏, 张家红, 张丽霞
doaj
International Journal of Applied Linguistics, EarlyView.ABSTRACT One key strategy that local universities and the government of Hong Kong have adopted in recent years is attracting more students from Chinese Mainland to study at Hong Kong's higher education institutions and contribute to society after graduation.
Lingnan Zhang, Yue Peng
wiley +1 more source
, 2005 建立了一套由生物质合成气一步法制取二甲醚的在线分析系统.针对生物质合成气一步法合成二甲醚特征,采用两台分别装有TCD和FID检测器的色谱仪分析反应产物.利用原料气中N2作为内标物,来确定TCD上检测到的永久性气体组分浓度;通过CH4作内标物,来确定FID上检测到的有机物组分浓度.TCD和FID之间通过CH4来关联,从而确定反应产物中主要组分的浓度.该系统在压力3 MPa,温度250℃,空速(流速与催化剂体积的比值)分别为1 000、2 000、3 000 h-1的条件下用C306和HZSM ...
鲁皓, 常杰, 付严
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四川大学学报. 自然科学版, 1999 理论分析认为，以稳定分子离子Ｈ＋３为核心，吸附一个或多个氢分子可形成Ｈ＋５，Ｈ＋７和Ｈ＋９等的Ｈ＋ｎ团簇离子（ｎ为奇数）［１］．在这些离子的形成过程中，Ｈ＋３和其它的Ｈ＋ｎ离子是电子“受主”，而Ｈ２是电子“施主”，由于受主施主之间的静电引力维持团簇离...
师勉恭 +4 more
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Journal of Sociolinguistics, EarlyView.ABSTRACT This study investigates how ordinary Taiwanese netizens perform linguistic authority by policing others’ use of Mainland Chinese expressions in everyday online interactions not originally intended to be political and how such policing is subsequently supported, resisted, or (de)legitimized in the context of Taiwan–China relations. Three orders
Hsi‐Yao Su
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Auto-focus technology and its application based on image processing
, 2009 Auto-focusing technique is an important method to improve the precision,intelligentization,automatization for the indentation diameter measurement.The paper introduces an auto-focus method of indentation diameter measurement based on image processing ...
Chen, Xiaomei, Yang, Tao, Zuo, Yong
core
New Phytologist, EarlyView.Biosynthesis and accumulation of tanshinones in the periderm of Salvia miltiorrhiza during secondary root growth. Summary Perennial herbs develop long‐lived roots that undergo repeated cycles of secondary growth, during which the periderm functions as a protective barrier and a major site of specialized metabolite accumulation.
Licheng Liu +19 more
wiley +1 more source
Gongye shui chuli, 2010 对处理含油废水的聚偏氟乙烯(PVDF)管式超滤膜进行了阻力分析,采用原子力显微镜(AFM)和扫描电子显微镜(SEM)对PVDF膜表面进行微观观测,考察了PVDF新膜表面的粗糙程度和膜污染前后表面的光洁程度,通过傅里叶红外光谱(FTIR)和X射线能谱(EDS)对PVDF膜表面污染物进行了分析,讨论了污染物的类型和污染物的主要成分。实验分析结果表明膜污染后的阻力主要来自凝胶层阻力,占总阻力的79.8%。污染物附着在膜的表面,其主要成分是含氧的有机化合物。
郑阳 +4 more
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Leveraging an Unhappiness Lens for Smarter Policies
Policy Studies Journal, EarlyView.ABSTRACT Traditional policy research has largely focused on enhancing happiness or well‐being, privileging positive outcomes as the primary metric of success. We argue that a systematic focus on the drivers of unhappiness—rather than solely on happiness—offers a complementary analytical framework that can uncover hidden societal deficits and broaden ...
Marine Coupaud +2 more
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