Results 71 to 80 of about 1,500,514 (193)

Neutral interactions among non‐native plants are common

open access: yesNew Phytologist, Volume 252, Issue 1, Page 292-309, October 2026.
Global distribution of studies and overall effect of co‐invasion for all metrics of non‐native plant performance combined. Summary Globalization has accelerated the establishment of non‐native plant species, increasing the prevalence of multispecies co‐invasions; yet interactions among co‐invaders remain poorly understood.
Feng He   +7 more
wiley   +1 more source

十一种重楼属植物的RAPD分析

open access: yes四川大学学报. 自然科学版, 2003
作者利用随机扩增多态性DNA(RAPD)技术,对重楼属植物11个种的遗传多样性进行了分析.12个引物共扩增出86条带,其中有82条(95 3%)表现出多态性,说明重楼属植物有很高的遗传多样性.用UPGMA法则构建分子系统树,并把11个种划分为6组.
唐荣华, 王丽, 唐小为, 李云飞
doaj  

Trust in the Machine? Practitioner Perspectives on the Role of AI in Online Content Moderation

open access: yesPolicy &Internet, Volume 18, Issue 3, September 2026.
ABSTRACT The scale and volume of user‐generated content produced in the Web 2.0 era have led to content moderation becoming an essential aspect of most online platforms' business models. This form of digital labour is often performed by human content moderators (CMs) in the Global South, however, artificial intelligence (AI) technology has increasingly
Elena Martellozzo   +4 more
wiley   +1 more source

MDR1基因+3435C/T基因型单核苷酸多态性对硼替佐咪治疗的多发性骨髓瘤预后的影响

open access: yesZhongguo shiyan zhenduanxue, 2013
目的探讨MDR1基因+3435C/T的单核苷酸多态性对硼替佐咪治疗的多发性骨髓瘤患者预后的影响。方法采用DNA测序方法检测MDR1基因+3435C/T的单核苷酸多态性;应用Kaplan-Meier来确认MDR1基因+3435C/T的单核苷酸多态性对硼替佐咪治疗/未治疗患者生存率的影响。结果 52.8%(n=47)的多发性骨髓瘤患者MDR1+3435位点的基因型为C/T,其余多发性骨髓瘤患者MDR1+3435位点的基因型均为T/T。MDR1+3435C/T基因型的患者的平均生存期为43.3月,而MDR1 ...
张伟, 董理
doaj  

Advanced Electrospun Nanofiber Epidermal Electronics for Electrophysiological Monitoring: From Conformal Interfaces to Multimodal Closed‐Loop Systems

open access: yesRare Metals, Volume 45, Issue 9, September 2026.
ABSTRACT Epidermal bioelectronics is a transformative technology for continuous health monitoring and human‐computer interaction. However, the mechanical and physiological mismatch at the skin–device interface limits its long‐term application. Electrospun nanofiber membranes (ENMs), with their unique three‐dimensional hierarchical porous network and ...
Jiahua Ni   +7 more
wiley   +1 more source

糖尿病、冠心病患者ABCA1基因R219K多态性的频率分布特点

open access: yesZhongguo shiyan zhenduanxue, 2011
目的旨在探讨我国北方地区汉族人ABCA1基因R219K多态性的频率分布特点,对血脂水平的影响,及其与冠心病、糖尿病和糖尿病合并冠心病的关系。方法采用改良碘化钠法提取基因组DNA,聚合酶链反应限制性片段长度多态性(PCR-RFLP)法分析ABCA1基因R219K多态性。结果正常对照组ABCA1基因R219K多态性RR、RK、KK基因型频率、R等位基因频率、K等位基因频率分别为28.5%、48.6%、22.9%、52.8%、47.2%;糖尿病组分别为29.6%、63.9%、6.5%、61.5%、38.5 ...
许慧, 彭浩, 蒋莹
doaj  

國際合作對台灣生物多樣性資料整合之重要性

open access: yes, 2014
[[sponsorship]]生物多樣性研究中心[[note]]已出版;沒有審查制度 ...
邵廣昭
core  

Metal‐Filamentary Memristor‐Based Artificial Neurons for Embodied Neuromorphic Intelligence

open access: yesRare Metals, Volume 45, Issue 9, September 2026.
ABSTRACT Embodied neuromorphic intelligence represents a transformative paradigm for next‐generation intelligent systems, with broad implications for robotics, autonomous driving, intelligent manufacturing, and smart infrastructures. Neuromorphic chips enable bioinspired computing with sparse, heterogeneous representations and spatiotemporal dynamics ...
Tianci Huang, Zuqing Yuan, Qilin Hua
wiley   +1 more source

四川地区北京型结核分枝杆菌的MIRU-VNTR基因分型

open access: yes四川大学学报. 自然科学版, 2014
用寡核苷酸多态性基因分型(Spoligotyping)对2008年1月至2010年10月间采集的211株结核分枝杆菌临床分离株进行基因分型,然后对北京型结核分枝杆菌VNTR位点的多态性进行检测.选用的12个VNTR位点存在较高的基因多态性,该12位点组合分辨能力(HGI=0.99985)高于标准的VNTR-12位点组合(HGI=0.99546),其中多态性较高的7位点组合HGI指数为0.99977.因此,7位点组合可以作为四川地区北京家族分枝杆菌的一线分型方法.
冯钦   +7 more
doaj  

FC-72介质液态、气态及两相态工频击穿特性研究

open access: yesGaoya dianqi, 2021
相变冷却技术逐渐成为高压功率电力电子器件散热瓶颈的解决方案。但在高压应用场景中,由气泡引发的绝缘问题需要重点关注。针对相变冷却的沸腾特征,掌握制冷剂液态、气态以及两相态的绝缘特性是开展相变冷却技术绝缘分析的基础,而现有研究尚没有系统性的制冷剂多相态绝缘特性测试方法。因此,文中研制了用于制冷剂多种相态工况的绝缘实验装置,首次实现了低沸点液体蒸汽的介电强度测试,进而提出了制冷剂蒸汽及两相态环境的击穿实验方案。利用FC-72制冷剂,对其液态、气态及两相态展开了系统性的击穿特性研究,获得了FC ...
莫申扬   +5 more
doaj  

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