Results 31 to 40 of about 282,855 (149)
, 2017 在广泛查阅国际地震预报研究动态的基础上,根据当前数值地震预测研究中面临的问题和相关问题的研究进展,对未来推动数值地震预测研究的有关方面进行了初步讨论,以达抛砖引玉之效。借鉴数值天气预报的发展历程,发展数值地震预报首先亟需就各种观测资料进行四维“同化”分析,形成地震孕育过程中线性能量积累阶段、非线性转变到亚失稳阶段不同状态连续变化的“模式”地震资料构成的地下四维“云图”。不同途径观测资料的“同化 ...
李世海 +4 more
core +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
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Veterinary Dermatology, Volume 37, Issue 2, Page 236-246, April 2026.Canine atopic dermatitis (cAD) is a chronic condition requiring life‐long management. Accurate diagnosis can be challenging, with no reliable diagnostic test. This study aimed to generate a simple diagnostic model for cAD. This model is a relevant prototype for an app‐based tool to support general practitioners in the diagnosis of cAD alongside ...
Xavier Langon +2 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
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Integrative Conservation, Volume 5, Issue 1, Page 74-85, March 2026.This study investigates distribution patterns of Galliforms in the Indian Himalayas, focusing on factors influencing their occurrence, regions of high diversity and endemism, and their overlap with protected areas. Our study highlights the need for assemblage‐level conservation strategies in high Himalaya which primarily relies on snow leopard‐focused ...
Manvi Sharma +5 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
Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT Multimodal luminescent materials are crucial for advanced information encryption, real‐time dosimetry, and high‐resolution bioimaging, yet integrating orthogonal stimulus‐responsiveness into a single‐component system is challenging. Herein, we report a Pr3+‐doped Ca3Ga2Ge3O12 (CGGO: Pr3+) garnet phosphor that exhibits orthogonally addressable ...
Qi Chen +10 more
wiley +1 more source
Zhongguo shiyan zhenduanxue, 1999 探讨唾液抗ＨｐＩｇＧ测定对Ｈｐ感染的诊断价值。方法用ＥＬＩＳＡ法测定５４例Ｈｐ阳性及１５例Ｈｐ阴性患者唾液内抗ＨＰＩｇＧ，并与血清抗体测定结果相比较。结果唾液抗ＨＰＩｇＧ对ＨＰ感染诊断的敏感性为９０．７％，特异性为８０％，准确性为８８．４％，阳性预测值９４．２％，阴性预测值７０．６％，与血清测定结果接近（分别为９２．６％，８６．７％，９１．３％，９６．ｌ％和７６．５％），唾液ＨｐＩｇＧ与血清内ＨｐＩｇＧ滴度显著正相关（ｒ＝０．６７３７，Ｐ＜０．００１）。结论唾液ＨｐＩｇＧ测定诊断Ｈｐ感染有较好应用价值。
郝志明, 周秦蜀, 吴玉娥
doaj
Ultrasound in Obstetrics &Gynecology, Volume 67, Issue 3, Page 376-384, March 2026.ABSTRACT Objective To investigate whether combining abnormal morphological features observed on ultrasound in live pregnancies that ended in a first‐trimester miscarriage can predict an abnormal karyotype. Methods This retrospective observational cohort study was conducted at the early‐pregnancy assessment unit at University College London Hospital ...
T. Setty +5 more
wiley +1 more source
Zhongguo shiyan zhenduanxue, 2004 目的 探讨血清降钙素原 （PCT）在小儿肠炎中的诊断意义。方法 采用半定量固相免疫测定法测定 5 8例小儿肠炎患者血清PCT水平。结果 以血清PCT≥ 0 5ng/ml为细菌感染阳性阈值 ,则细菌性痢疾与轮状病毒性肠炎血清PCT水平相比较P >0 0 5 ,无显著性差异 ,特异性为 94 7%。中毒型细菌性痢疾与普通型细菌性痢疾比较P
陈小剑, 陈益平, 李芳, 陈晓晴
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