Results 31 to 40 of about 12,205 (212)
High‐Value Targeted Conversion of Copper Slag as LiFePO4 Material for Lithium‐Ion Batteries
Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT The massive stockpiling of copper slag (CS) presents severe environmental and resource‐waste challenges. Existing strategies for CS valorization typically yield low‐value‐added products. Herein, we propose an innovative hierarchical regulation approach to transform CS into high‐performance LiFePO4 (LFP) cathode materials.
Yuyun Li +5 more
wiley +1 more source
增强CT淋巴结形态联合错配修复蛋白表达检测对结直肠癌区域淋巴结转移的评估作用
Zhongguo shiyan zhenduanxue, 2023 目的 分析增强电子计算机断层扫描(CT)淋巴结形态联合错配修复蛋白(MMR)表达检测对结直肠癌区域淋巴结转移的评估作用。方法 选取2019年8月-2021年8月收治的结直肠癌患者89例，均采取手术治疗，术前行增强CT扫描及病理穿刺检测病灶组织MMR表达情况。以术中结果为标准，评价增强CT淋巴结形态联合MMR表达检测对直肠癌区域淋巴结转移的评估价值。结果 淋巴结转移患者高分化和pT3-4期百分率与淋巴结未转移患者比较，差异有统计学意义 ...
严征远, 卜雪峰, 曹能琦, 张恒
doaj
Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT Lightweight and lead‐free radiation shielding materials remain urgently needed. This work designed a fluorite high‐entropy oxide (FHEO) system through a combined computational–experimental route. Density functional theory based on special quasi‐random structures was used to identify thermodynamically stable fluorites from a wide compositional ...
Xiangjie Duan +9 more
wiley +1 more source
Zhongshan Daxue xuebao. Yixue kexue ban, 2006 【目的】界定颈动脉内中膜厚度及其斑块分级在估测冠心病中的最佳预测值。【方法】用高频超声检测125例患者颈总动脉内中膜厚度、颈动脉分叉处内中膜厚度，以及颈动脉斑块分级，评价它们估测冠心病的作用，并用ROC曲线评价它们的诊断价值。【结果】冠心病组颈总动脉及分叉处内中膜增厚、斑块分级高，与对照组比较差异有统计学意义，P〈0．05；ROC分析显示颈总动脉及分叉处内中膜增厚、斑块分级均可估测冠心病，其曲线下面积分别为0．70、0．75、0．74；将颈总动脉分叉处内中膜增厚≥1．3mm，颈总动脉内中膜增厚≥0 ...
刘东红 +5 more
doaj
Research on Discovering the Value of Jiangxi JDL Environmental Protection Co.,Ltd. Listed on NEEQ [PDF]
, 2016 目的：自新三板扩容以来，制度红利不断释放，新三板企业投资价值凸显。新三板企业具有不同于中小板和创业板企业的特性，需要在价值分析中区别对待。环境治理重点及模式创新研究已被列入国家“十三五”规划；在新三板市场蓬勃发展的基础上，新三板环保企业挂牌家数不断增加，环保企业已经成为新三板市场的重要一极，环保产业在发展循环经济中的重要作用决定环保企业的发展及其在环境保护和治理上的作用更应该受到关注。为了使研究更有针对性，在估值前，本文对价值评估的思路进行了整理，对样本的选取和指标的选择也做出了界定 ...
张海祯
core
Ultrasound in Obstetrics &Gynecology, Volume 67, Issue 4, Page 455-460, April 2026.ABSTRACT Objective To estimate the residual risk of maternal–fetal transmission after primary cytomegalovirus (CMV) infection in the periconceptional period or the first trimester in women treated with valacyclovir, and to assess whether the presence of glycoprotein B2 (gB2)‐specific immunoglobulin (Ig)‐G antibodies on immunoblot analysis refines fetal
K. O. Kagan +6 more
wiley +1 more source
A Contrastive Analysis of Taiwan PC Enterprises’ Business Model from the Perspective of Value Chain [PDF]
, 2016 台湾个人电脑产业的发展始于20世纪80年代。经过30余年的发展，台湾个人电脑企业的发展经历从辉煌到低迷，其从OEM经ODM升级到OBM发展路径，成为后进国家或产业实现升级发展的典范。 台湾个人电脑企业的经营模式选择受价值链理论的影响，而其发展历程又丰富了价值链理论的内涵。但近年来PC电脑产业技术逐渐走向成熟，消费者汰机需求降低，产业陷入低迷，上下游企业均陷入微利化。在产业景气影响下，不同经营模式的个人电脑企业的发展现状也各不相同，本研究的目的在于对不同经营模式的个人电脑企业发展现状进行对比分析 ...
刘春秀
core
Ultrasound in Obstetrics &Gynecology, Volume 67, Issue 4, Page 492-499, April 2026.ABSTRACT Objectives To assess the value of placental insufficiency markers for estimating the risk of genetic anomalies in fetuses with isolated early‐onset fetal growth restriction (FGR), defined as an estimated fetal weight ≤ 3rd percentile diagnosed ≤ 28 + 6 weeks' gestation.
M. Armengol‐Alsina +17 more
wiley +1 more source
Clinical significance of estimating fetus weight for diagnosing giant infants
Huli yanjiu, 2005 [目的]评价测量估算胎儿体重对诊断巨大儿的临床价值。[方法]以回顾性诊断试验评价为研究方式,采用产前胎儿体重估算和新生儿出生后测重,对120例疑似巨大儿者以出生后测重做为金标准,统计数据列入四格表计算。[结果]在107例巨大儿中,103例与产前测量估算相符合,灵敏度96.1%、特异度92.2%、准确度95.8%、阳性预告值99.0%。[结论]测量估算胎儿体重诊断巨大儿的方法简单、经济、快速、可靠。
党云芳
doaj
How much biotic nativeness matters across human demographic groups
Conservation Biology, Volume 40, Issue 2, April 2026.Abstract Many central concepts of conservation biology—such as nativeness—are structured by ecological and social factors. However, the social consequences of using these concepts to make conservation decisions remain inadequately understood. Some researchers argue that nativeness, rather than acting as an objective proxy for important ecological ...
Harold N. Eyster, Rachelle K. Gould
wiley +1 more source