Results 61 to 70 of about 10,779 (208)

急性胰腺炎合并肠系膜上静脉血栓的超声诊断价值

open access: yesZhongguo shiyan zhenduanxue, 2012
目前临床工作者对于急性胰腺炎合并胰周血管并发症已有较好的认识,但对于急性胰腺炎合并肠系膜上静脉血栓认识尚不够,一方面因其发病率相对较低,另一方面因其疾病的特殊性易误诊漏诊,预后不佳,死亡率高。本研究探讨超声对急性胰腺炎合并肠系膜上静脉血栓的诊断价值 ...
张明河, 田晓丰, 吕冬梅, 曹宏
doaj  

Experimental insights into characteristic properties and applications of two‐dimensional Janus transition metal dichalcogenide (TMDC) materials: a comprehensive review

open access: yesRare Metals, Volume 44, Issue 11, Page 8161-8197, November 2025.
Graphical abstract AbstractThe studies on the synthesis of two‐dimensional (2D) Janus materials have made significant progress over the years. They offer new opportunities to increase the potential usage of Janus transition metal dichalcogenide (TMDC) materials in different application areas due to their unique structural, electrical, optical and ...
Ayça Coşkun   +9 more
wiley   +1 more source

Status on the diagnosis and treatment of BK virus infection [PDF]

open access: yes, 2017
BK病毒(BKV)属于人类多瘤病毒中的一个亚型。BKV在普通人群中隐性感染率高达80%。近年来,随着器官移植术的广泛开展以及强效免疫抑制剂的大量使用,在免疫抑制和免疫低下的人群中,由潜伏于体内的BKV重新被激活而引起的BKV相关肾病(BKVAN)、出血性膀胱炎、输尿管狭窄等疾病越来越受到医学界的关注。目前对BKV感染缺乏明确有效的预防措施及抗病毒药物,因此早期监测器官移植术后患者体内的BKV载量、减少免疫抑制剂的使用量、及时调整免疫抑制剂治疗方案并辅助使用其他抗病毒药物对预防BKV相关疾病的发生尤为重要。
张志刚, 曹璐, 王鑫, 赵勤俭
core   +1 more source

薄壳非线性稳定理论的最新发展

open access: yesJianzhu Gangjiegou Jinzhan, 2006
本文回顾了近代非线性薄壳稳定理论的发展历史,认为薄壳稳定理论的研究大体经历了三个阶段:第一阶段为针对完善结构的线性弹性理论;第二阶段为考虑结构几何缺陷的非线性弹性理论;第三阶段为考虑实际材料性能的非线性弹塑性理论。目前正在进入第四阶段,即开始考虑结构物理缺陷的影响。最新的三个主要研究方向是:1)非线性薄壳有限元分析方法;2)材料局部损伤过程对薄壳稳定性的影响;3)带裂纹薄壳的稳定性分析。文中分别就这三个方向的研究现状进行了调查分析,并对今后的研究趋势进行了展望。
周利, 黄义
doaj  

Managing Risk, Reinforcing Environmental Racism: The Biopolitics of Pesticide Regulation in California Agriculture

open access: yesReview of Policy Research, Volume 42, Issue 6, Page 1509-1524, November 2025.
ABSTRACT This paper provides a retrospective on California's oversight of 1,3‐dichloropropene (1,3‐D). It utilizes archival documents, including internal memos, emails, and risk assessments, to demonstrate how the state's Department of Pesticide Regulation consistently expanded allowable 1,3‐D use while presenting each policy change as scientifically ...
Kaitlyn Alvarez Noli
wiley   +1 more source

A retrospective study of pembrolizumab combined with XELOX regimen in the treatment of advanced gastric cancer [PDF]

open access: yes
Background and purpose: Despite the significant advancements that have been made in the treatment of gastric cancer, there are still problems such as poor prognosis and low five-year survival rate in advanced gastric cancer.
FENG Huizhi, LIU Jingmei, BU Xiaoqian
core   +1 more source

Impact of race‐based customization on detection of fetal growth restriction

open access: yesUltrasound in Obstetrics &Gynecology, Volume 66, Issue 4, Page 480-485, October 2025.
ABSTRACT Objective Fetal growth standards determine which fetuses are diagnosed with fetal growth restriction (FGR) and become candidates for enhanced fetal monitoring. Given the existence of race‐based differences in fetal and neonatal weights, we sought to determine the impact of race‐based customization of fetal growth curves on the antenatal ...
P. Ramesh, L. Lemon, J. C. Larkin
wiley   +1 more source

结构抗火研究进展与趋势

open access: yesJianzhu Gangjiegou Jinzhan, 2006
火灾高温对结构材性有显著影响,因此火灾极易造成结构损伤、破坏甚至倒塌。随着建筑事业的发展和建设水平的提高,如何合理进行结构的抗火设计正越来越受到学术界和工程界的关注。本文简要回顾了结构抗火研究历史,论述了近年来结构抗火研究的主要进展,指出了结构抗火研究尚存在的问题,对结构抗火研究趋势进行了展望,并提出了目前抗火研究尚需解决的关键科学问题。
李国强, 吴波, 韩林海
doaj  

铁死亡与卒中相关性研究进展 Progress of Correlation between Ferroptosis and Stroke

open access: yesZhongguo cuzhong zazhi, 2019
铁死亡是近些年新发现的一种程序性细胞死亡方式,参与到多种急性和慢性疾病的病 理过程中,其引发机制主要包括铁依赖性的活性氧自由基蓄积和多元未饱和脂肪酸的消耗。卒中一 直以高死亡率和致残率受到全世界研究者的广泛关注,但关于铁死亡在卒中致病机制中的研究目前 还较少,本文分别从铁死亡与出血性及缺血性卒中两方面对已有的最新研究成果进行回顾总结。 Abstract: Ferroptosis is a newly discovered programmed cell death in recent years,
李俞辰,刘耀,刘斌冰,田杨,史怀璋
doaj   +1 more source

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