Results 21 to 30 of about 1,012,899 (189)

Investigation on extended care needs of patients with hypertensive intracerebral hemorrhage (高血压性脑出血患者延续性护理服务需求调查)

open access: yes中西医结合护理
Objective To understand the extended care needs of patients with hypertensive intracerebral hemorrhage, investigate the construction methods of extended nursing service and provide reference for clinical nursing practice of hypertensive intracerebral ...
QIU Yajiao (邱亚娇)   +2 more
doaj   +1 more source

Ultrathin MnO2‐PEG‐PD‐L1 Nanosheets Enable Tumor Microenvironment Modulation and NIR‐II Photothermal Immunotherapy for Durable Control of Lung Cancer and Postoperative Recurrence

open access: yesRare Metals, Volume 45, Issue 6, June 2026.
ABSTRACT Lung cancer is one of the most common and deadly malignancies worldwide. Although immune checkpoint inhibitors, including PD‐1/PD‐L1 blockers, have benefited a subset of patients, response rates remain limited, and recurrence is frequent because of the immunosuppressive tumor microenvironment (TME), characterized by hypoxia and dysregulated ...
Yi Ma   +6 more
wiley   +1 more source

急性缺血性卒中患者就医行为决策现状及影响因素研究进展 Seeking Medical Services Decision-Making Status and Relevant Influencing Factors in Patients with Acute Ischemic Stroke: A Review

open access: yesZhongguo cuzhong zazhi, 2022
院前延迟是急性缺血性卒中患者错过再灌注治疗时机的主要原因,常因患者不合理的就医行为决策导致。既往研究多探讨就医延迟、转运延迟等外在影响因素,较少从患者自身决策的角度进行院前延迟的分析。本文从缺血性卒中患者就医行为决策的概念、现状及其影响因素这3个方面进行总结,分析目前急性缺血性卒中患者就医行为决策中存在的问题,讨论认知、环境、心理等因素对患者就医行为决策的影响及原因,为制订针对性的干预措施提供参考。 Abstract: Pre-hospital delay is the main cause ...
张伯煜,郭玉成,崔玉霞,李英丽,吕雨梅
doaj   +1 more source

Scenarios and strategies for future‐proofing ecosystem management under climatic novelty

open access: yesConservation Biology, Volume 40, Issue 3, June 2026.
Abstract Climate change is driving unprecedented declines in dominant, habitat‐forming foundation species across marine and terrestrial ecosystems globally. As climatic novelty becomes the norm, ecosystem reassembly will become increasingly common. Predicting and understanding these transitions, and their implications for future ecosystem functioning ...
Lauren T. Toth   +14 more
wiley   +1 more source

中日欧美抗震规范结构影响系数的构成及其对塑性变形需求的影响

open access: yesJianzhu Gangjiegou Jinzhan, 2008
本文对中、日、欧州及美国地震规范地震力计算的结构影响系数的构成进行了分析,认为,美国的结构影响系数中包括了材料的强屈比、超静定结构体系的超强系数以及延性系数;而欧洲的结构影响系数包含了延性系数,对于延性好的结构还允许包含结构体系的超强系数;日本仅包含延性系数;我国也是仅包含延性系数。由于日本采用允许应力设计,还有一个1.4的安全系数,因此比较起来,日本的地震力最大。从结构影响系数的构成看结构在地震作用下产生塑性变形的深度,按照美国规范设计的结构塑性变形要求最高,欧洲次之,我国再次之 ...
童根树, 赵永峰
doaj  

基于色散渐减光纤环镜中脉冲对传输特性研究

open access: yesGuangtongxin yanjiu, 2020
针对两对被时间延迟分开的脉冲会根据相位和时延的变化影响脉冲间的传输特性,且在脉冲重叠区域会受到交叉相位调制的影响发生干涉现象的问题,文章提出了在色散渐减光纤环镜中观察脉冲对的传输特性,研究结果表明,可根据脉冲对之间的相位和时延变化,观察脉冲对的时域特性和啁啾特性,分析脉冲对在不同情况下的传输特性。
史圣达, 张巧芬
doaj  

基于抗震性能提升的桥墩结构创新设计研究

open access: yes智能城市应用
地震作用下桥墩结构易损,为此提出一种基于抗震性能提升的创新设计方法,通过优化桥墩截面形式、配置新型耗能构件和采用智能材料复合技术构建多级抗震防线,经数值模拟与振动台试验验证,强震下新结构延性变形能力和能量耗散效率更优且残余变形大幅降低,研究建立的桥墩抗震性能量化评估体系为复杂地震环境中的桥梁工程提供可靠设计依据。
京京 金
semanticscholar   +1 more source

Policy, Waste, and Power: Textile Dumping in Chile's Atacama Desert

open access: yesLatin American Policy, Volume 17, Issue 2, June 2026.
ABSTRACT Globally, 87% of textile fibers end up incinerated or in landfills, with Chile bearing the brunt of this crisis. Every year, 39,000 tons of discarded clothing are illegally dumped in the Atacama Desert, turning it into a sacrifice zone for the Global North's waste economy.
Emma Minerva Brambilla
wiley   +1 more source

液相外延系统的密封与设备制作

open access: yesGuangtongxin yanjiu, 1987
本文介绍了液湘外延系统设备的密封可靠性与真空度对外延片质量的影响。按要求设计、制作了操作方便、真空度高、密封性好、全硬接液相外延设备。
王皎
doaj  

Temperature‐Induced Transformation of Oxidation Mechanism in HfZrTiTa0.5Al0.5 Refractory High‐Entropy Alloy: The Role of Elemental Segregation and Lattice Defects

open access: yesRare Metals, Volume 45, Issue 5, May 2026.
ABSTRACT Refractory high‐entropy alloys (RHEAs) face severe oxidation challenges at elevated temperatures, despite their outstanding mechanical properties. Consequently, understanding the oxidation mechanisms of RHEAs is crucial for their high‐temperature applications.
Zheng Tian   +7 more
wiley   +1 more source

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