Results 31 to 40 of about 70,029 (253)
Rare Metals, EarlyView.ABSTRACT The high accuracy in surface‐enhanced Raman scattering‐lateral flow immunoassays (SERS–LFIAs) is critical for reliable point‐of‐care testing (POCT) in clinical diagnostics. Conventional approaches are often affected by sampling variability and uneven distribution of immunoprobes, leading to unreliable signal fluctuations.
Shuai Zhao +9 more
wiley +1 more source
Gonad development during sexual differentiation in Epinephelus akaara and E. awoara [PDF]
, 2015 赤点石斑鱼和青石斑鱼已分别被确认为双向性转变和雌性先熟的雌雄同体型种类，但是第一次性成熟前的性分化和性腺发育特征还未有深入的研究。本研究利用传统组织学切片方法，跟踪赤点石斑鱼从孵化后6周到95周和青石斑鱼从孵化后6周到85周的性腺发育过程，深入了解石斑鱼性分化过程中性腺发育特征，探讨石斑鱼性别方式的多样性。孵化后约6周的仔鱼捕获自福建漳浦附近海域，并移入当地的养殖场利用天然海水进行室外养成，直至达到商品规格(一般2年以上)。实验样品采集从2013年2月至2014年5月，每2~17周(主要5~6周)一次 ...
王盈颖
core
Rare Metals, EarlyView.ABSTRACT The similar physicochemical properties of alkali metal elements make the co‐enrichment and precise separation of Cs+ and Rb+ in complex brine systems highly challenging. Here, an all‐inorganic strategy is proposed, which achieves efficient enrichment and precise separation of Cs+ and Rb+ in high‐salt systems by constructing Sr2+/Ba2+‐based ...
Kang Li, Ruixin Ma, Shina Li
wiley +1 more source
CEA、CA19-9、CA72-4联合检测在诊断胃、结-直肠癌中的应用
Zhongguo shiyan zhenduanxue, 2008 目的通过对CEA、CA19-9、CA72-4联检,探讨该方法在提高胃、结直肠癌临床诊断的敏感性、特异性及有效性中的作用。方法32例胃癌血清,38例结直肠癌血清,采用电化学发光分析法检测CEA、CA19-9、CA72-4,分析单个肿瘤标志物和3种肿瘤标志物联检在病理诊断明确的胃、结直肠癌病人血清中的测定值,敏感性、特异性和有效性。经统计分析了解单个检测和联合测定各项指标的差异。结果CEA单独检测敏感性、特异性和有效性在胃癌中分别为42.1%、93.1%和60.8%,在结直肠癌中分别为45.2%、91.6 ...
邱冰, 刘颖, 王燕颖, 李东夏
doaj
野生动物学报, 2023 为探究圈养梅花鹿（Cervus nippon）肠道菌群的结构、多样性以及肠道菌群组成的性别差异，利用Illumina MiSeq高通量测序平台对10只圈养健康梅花鹿粪便中的细菌16S rRNA V3—V4区扩增子进行PCR扩增，采用生物信息学手段以性别作为分组因素，分析雄、雌圈养梅花鹿肠道菌群的结构、多样性和差异物种。结果显示：在门水平上，圈养梅花鹿肠道菌群的优势菌门为厚壁菌门（Firmicutes；雄性61.69%，雌性58.23%）和拟杆菌门（Bacteroidetes；雄性27.40%，雌性31 ...
史倍宁 +7 more
doaj
Women on Board and Corporate Risk-taking [PDF]
, 2016 董事会，作为企业重要的决策管理机构，其良好的结构和运作对于企业治理和风险承担有着至关重要的作用。董事会构建有一个重要问题是董事会成员的性别配比。为了调整女性董事占比偏低的现状，越来越多的国家都对企业董事会中的女性比例制定了战略性目标或强制性规定，世界范围内对于女性进入企业决策管理层的呼声也越来越高。然而，企业面临的增加女性董事的压力是否基于女性董事对企业发展的实际作用呢？目前对于这一问题的研究大多关注女性董事与企业业绩的关系，而作为“硬币另一面”与企业业绩共进退的风险常常不被重视 ...
卞书媛
core
Novel Non‐Equimolar High‐Entropy Zirconates With Superior Thermophysical Properties
Rare Metals, EarlyView.ABSTRACT Rare‐earth zirconates (RE2Zr2O7) are promising candidates for topcoat materials in thermal barrier coatings (TBCs). However, their practical application in TBCs is limited by poor fracture toughness and low thermal expansion coefficient (TEC).
Taoyi Lu +7 more
wiley +1 more source
Æ E Æ Å – Reshaping the Role of Træna Fishermen
, 2022 This diploma project aims to strengthen the viability of Træna’s community by proposing an ocean research facility in the archipelago, enabling the next generation of local fishermen to collect oceanographic data while working at sea. The idea of the fisherman as oceanographer is inextricably linked to the architectural program on the island of ...
openaire +1 more source
The Causal Relationship of Social Isolation, depression and the risk of Stroke among the Middle-Aged and the Elderly in China [PDF]
, 2016 摘要 目的本研究旨在探索中国中老年人社会隔离、抑郁与脑卒中发病风险的因果关系，以期阐明中国中老年人社会隔离和抑郁与脑卒中发病风险的影响，明晰抑郁在社会隔离和脑卒中发病关系链中的中介效应，进而对中国中老年人有效预防脑卒中提出相关建议。 方法本研究基于中国健康与养老追踪（ChinaHealthandRetirementLongitudinalStudy，CHARLS）调查中2011年-2013年2期的纵向数据，结局变量基于“医生诊断是否患有脑卒中”条目，抑郁变量由流调中心抑郁量表 ...
马佳平
core
Rare Metals, EarlyView.ABSTRACT Developing low‐energy‐input electrocatalytic systems for efficient hydrogen production is crucial for advancing sustainable energy technologies. The overall hydrazine splitting (OHzS) has emerged as a promising strategy to reduce the overall energy consumption by replacing the sluggish oxygen evolution reaction.
Haozhou Chen +13 more
wiley +1 more source