Results 41 to 50 of about 10,165 (167)
OrbscanⅡ联合共焦显微镜在早期圆锥角膜中的诊断价值 [PDF]
, 2009 目的探索角膜地形图Ⅱ(orbscanⅡ)联合共焦显微镜在早期圆锥角膜中的诊断价值。方法将142例患者分为早期圆锥角膜组37例和近视组62例及接触镜组43例,了解早期圆锥角膜OrbscanⅡ和共焦显微镜的改变特点,在此基础上初步制定了早期圆锥角膜诊断标准,并比较诊断效率。结果早期圆锥角膜组37例早期圆锥角膜患者中,OrbscanⅡ和共焦显微镜均呈阳性改变者4例,仅OrbscanⅡ呈阳性改变者26例,仅共焦显微镜呈阳性改变4例。两种检查的诊断阳性率差异有统计学意义 ...
刘祖国 +4 more
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Ultrasound in Obstetrics &Gynecology, Volume 65, Issue 5, Page 567-574, May 2025.ABSTRACT Objectives To assess the value of pregnancy‐associated plasma protein‐A (PAPP‐A) in screening for preterm pre‐eclampsia (PE) (delivery < 37 weeks' gestation) measured in maternal blood samples collected before 11 weeks, and to compare the screening performance of PAPP‐A with that of placental growth factor (PlGF) from blood samples collected ...
L. Rode +21 more
wiley +1 more source
Predictive value of TEG for deep venous thrombosis of lower limbs in patients with chronic obstructive pulmonary disease [PDF]
Objective To analyze the value of thromboelastogram （TEG） parameters in predicting deep venous thrombosis of the lower limbs in patients with chronic obstructive pulmonary disease（COPD）.
Tan Huaqiao, Bin Dongmei, Zhou Jieliang, Shao Chaohua, Pei Hua, Huang Weihua, Liu Xiaojuan
core +1 more source
Ultrasound in Obstetrics &Gynecology, Volume 65, Issue 4, Page 470-477, April 2025.ABSTRACT Objective To evaluate the presence and levels of cytomegalovirus (CMV) cell‐free DNA (cfDNA) fragments in women pregnant with a fetus with symptomatic congenital CMV (cCMV). Methods The study comprised nine women whose fetuses were diagnosed with cCMV between June 2019 and July 2024 at 20 + 4 to 34 + 1 weeks' gestation (n = 8) or neonatally (n
B. H. W. Faas +9 more
wiley +1 more source
Zhongguo shiyan zhenduanxue, 2018 目的探讨血清miR-21对结直肠癌肝转移预测的诊断价值,以期为临床的结直肠癌肝转移的预测提供一种潜在的辅助诊断方法。方法检测146例晚期结直肠癌无肝转移患者和124例晚期结直肠癌伴肝转移患者血清中CEA的含量和miR-21的相对表达值,评价其单独检测和联合检测对于结直肠癌肝转移的预测的诊断价值。结果与结直肠癌无肝转移组相比,结直肠癌伴随肝转移组的CEA和miR-21均显著升高 ...
肖霞, 马慧, 王欣
doaj
Simulating the efficacy of wolf–dog hybridization management with individual‐based modeling
Conservation Biology, Volume 39, Issue 1, February 2025.In the photo, an introgressed adult wolf–dog in the Northern Apennines, Italy, not far from the city of Bologna. Part of a research program, this male has been sterilized and released back in its own pack with a Global Positioning Collar. Abstract Introgressive hybridization between wolves and dogs is a conservation concern due to its potentially ...
Nina Luisa Santostasi +4 more
wiley +1 more source
Zhongguo shiyan zhenduanxue, 2013 目的评价ELISA法检测新的肿瘤标志物高尔基蛋白73（GP73）诊断原发性肝癌试剂的性能。方法对GP73ELIAS检测方法绘制工作曲线,进行偏倚测定、不精密度测定、回收试验以及对120例临床标本进行测定,并与"金标准"病理结果比较,分析灵敏度、特异性、符合率、阳性预测值和阴性预测值。结果 GP73检测方法的工作曲线为:Y=427.2 X-5.05（r2=0.998）,有较大的斜率（427.2）、有良好的准确度 ...
袁明生, 唐富英, 王影
doaj
The Predictive Value of Fair Value:Empirical Evidence from Trading Financial Instruments [PDF]
, 2015 随着近年来资本市场的发展，投资者对“决策有用”会计信息的需求越来越高，会计信息质量的重点逐渐从强调客观性和可验证性转变为强调相关性，会计的主导计量属性逐渐从历史成本转变为公允价值。会计理论界普遍认为公允价值比历史成本更具预测价值，各准则制定机构对会计信息质量特征体系的层次划分也纷纷将预测价值列为相关性的首要构成要素，但现存文献中却鲜有公允价值的预测价值的经验证据。 公允价值是否比历史成本能够更好地预测未来收益？公允价值的预测能力是否有助于促进公允价值的价值相关性 ...
张瑞丽
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Landscape‐scale predictions of future grassland conversion to cropland or development
Conservation Biology, Volume 39, Issue 1, February 2025.Abstract Grassland conservation planning often focuses on high‐risk landscapes, but many grassland conversion models are not designed to optimize conservation planning because they lack multidimensional risk assessments and are misaligned with ecological and conservation delivery scales.
Kevin W. Barnes +2 more
wiley +1 more source
Zhongguo shiyan zhenduanxue, 2011 目的比较普通电子结肠镜与色素放大内镜（FICE系统）对结肠粘膜微小肿瘤样病变的检出率,分析FICE系统在临床诊断中的使用价值。方法对2006年10月-2009年9月期间随机行普通电子结肠镜检查与FICE系统检查的结果进行回顾分析,以病理组织学诊断为标准,比较两种检查对微小肿瘤检出的灵敏度、特异度、阳性预测值和阴性预测值。结果剔除直径>5 mm肿瘤性病变患者,与病理组织学诊断比较,普通结肠镜诊断结肠粘膜诊断肿瘤性和非肿瘤性病变的灵敏度、特异度、阳性预测值和阴性预测值依次为68.0%、97.1%、78.0 ...
谢春生, 林瑞华, 黄鹤
doaj