Results 21 to 30 of about 3,406 (155)
Taxonomic revision of lizards from the Paleocene deposits of the Qianshan Basin, Anhui, China [PDF]
, 2016 Although the Late Cretaceous lizard fauna of China and Mongolia is relatively well-known, information on Paleocene lizards from the same region is currently limited.
Dong, LP, Evans, SE, Wang, Y
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Rare Metals, Volume 43, Issue 8, Page 3702-3712, August 2024.Graphical abstract AbstractThe highly reversible insertion/extraction of large‐radius K+ into electrode materials remains a tough goal, especially for conversion‐type materials. Herein, we design a current collector‐integrated electrode (N–CoSe/CoSe2–C@Cu) as an advanced anode for potassium‐ion battery (PIBs).
Zi‐Jie Mu +9 more
wiley +1 more source
Application of Gas-Contrasted and Window Technic in Diagnosing Gastro-Colon Lesion with CT [PDF]
, 2008 目的探讨空气造影低剂量CT扫描及低窗位图像诊断肠道病变的应用价值。方法126例疑有胃或结肠病患者随机分为2组,一组(69例)采用传统的水造影或无造影常规剂量CT扫描及常规窗位诊断,另一组(57例)采用空气造影低剂量CT扫描及低窗位图像诊断,以内窥镜检查为诊断标准,由资深医生采用单盲法评价诊断,比较2组图像的诊断自信度及正确率。结果医生对空气造影低剂量CT扫描及低窗位图像的诊断自信度和正确率明显优于传统的水造影或无造影常规剂量CT扫描常规窗位图像 ...
周水添 +4 more
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Diagnostic Value of Transbronchial Needle Aspiration and Endobronchial Ultrasoundguided Transbronchial Needle Aspiration for Hilar and Mediastinal Lymph Nodes in Lung Cancer Patients [PDF]
, 2010 Background and objective Transbronchial needle aspiration (TBNA) and endobronchial ultrasoundguided TBNA (EBUS-TBNA) have been applied to the diagnosis for mediastinal lymph nodes.
Hongli YI +4 more
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Influence Mechanism of Ionic Interface Reaction on Soil Porosity [PDF]
, 2023 [Objective] The changes in surface charge properties of soil particles and the net force between particles were analyzed, in order to elucidate the influence mechanism of particle interaction on pore conditions.
Ding Wuquan +3 more
core +1 more source
Zhongguo shiyan zhenduanxue, 2018 目的通过对低剂量CT窦道造影扫描与常规CT扫描的辐射剂量、图像质量及病灶的显示情况的对比研究,探讨低剂量CT窦道造影扫描在臀部窦道中的应用价值。方法搜集2012年3月至2017年10月在本院诊断为臀部窦道的患者78例,随机分为A、B两组,窦道造影前后均行CT扫描,造影前均采用常规剂量(120kV,200mA)扫描,造影后两组分别采用100mA和50mA的低剂量扫描,其他参数保持一致。通过统计学方法比较低剂量造影扫描和常规扫描的辐射剂量、图像质量及病灶的显示情况等。结果 ...
方进智 +4 more
doaj
CT扫描联合酶联免疫吸附法检测血清AFP-L3含量在PHC诊断中的价值
Zhongguo shiyan zhenduanxue, 2013 目的通过CT扫描联合酶联免疫吸附法（ELISA）检测血清甲胎蛋白异质体（AFP-L3）含量,探讨其在原发性肝癌（PHC）诊断中的价值。方法137例（其中106例具CT增强扫描的资料）血清标本来自唐山市人民医院2011年3月至11月间的住院患者,运用ELISA法检测血清中AFP-L3的含量,以AFP-L3>37.89ng/ml为临界值。137例病例均具有CT或CT增强扫描资料,回顾分析137例患者总共164个PHC病灶的增强扫描经后处理技术得到二维及三维重建图像而诊断,探讨采用血清AFP ...
李玉柱 +7 more
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The physical mechanism of beam formation in dolphin’s biosonar [PDF]
, 2016 作为群居的海洋哺乳动物，齿鲸类拥有着与众不同且功能强大的生物声呐系统。其生物声呐系统经过自然界的长期演化和优胜劣汰，性能已高度优化。海豚的回声定位声波能够在百米内探测到厘米级大小的物体，并对毫米级厚度的金属目标做出辨别，此外还能在探测移动目标的时候对其波束特性进行调整，其性能远远优于目前世界上任何的人工声呐。其生物声呐系统卓越的性能引起了世界上声学研究者强烈的兴趣，不但使得齿鲸类生物声呐研究成为近年来生物声学界以及国际海洋声学界的焦点，还成为新型海洋技术开发值得关注的高新科技领域 ...
魏翀
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Precise identification and threshold inversion of pores and fissures in CT digital coal rock based on Bi-PTI model [PDF]
, 2023 In the research area of the CT digital coal petrography, the selection of gray threshold directly affects the accuracy of spatial structure remodeling. To allow the pores and fissures space remodeling data to more accurately represent the real structure ...
Bo ZHAO +5 more
core +1 more source
Zhongguo shiyan zhenduanxue, 2011 目的探讨肋骨骨折低剂量多层螺旋CT扫描的最佳参数。方法将30名志愿者随机分为3组,分别行低剂量螺旋CT扫描,管电流分别设置为100 mA、50 mA及25 mA,扫描后行薄层及VR、MPR重建,由三位不同年资医师分别进行影像分析,并进行不同管电流组间统计学秩和检验（Kruskal Wallis检验）,选取最佳低剂量扫描参数。再选择10例肋骨骨折患者利用最佳扫描参数进行检查以判断其对于诊断肋骨骨折的可靠性。结果统计学表明,χ2=18.921,P=0.000,三组间差异均有统计学意义。100 mA、50 ...
刘岳峰 +4 more
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