Results 71 to 80 of about 23,098 (190)
Representation of obligate groundwater‐dwelling copepod diversity in European protected areas
Conservation Biology, EarlyView.Abstract Groundwaters sustain diverse surface ecosystems and are populated by metazoan species, mostly invertebrates, that provide fundamental ecological functions and are often of prominent conservation value due to narrow endemism and high phylogenetic rarity.
Francesco Cerasoli +7 more
wiley +1 more source
自强不息求实创新——记著名电化学家、中科院院士田昭武教授 [PDF]
, 1999 1995年8月28日至9月1日,国际电化学学会在厦门大学举行第46届年会。来自50个国家和地区的800多名科学家出席会议,提交论文907篇,内容几乎涉及电化学科学、技术研究的各个领域,充分反映了当代电化学的最新进展。担任本届年会主席的就是我国著名的电化学家、厦门大学化学系教授田昭武院士。这是国际电化学学会继1989年日本京都之后第二次在亚洲召开的年会,我国首次承办如此大规模、高层次的国际电化学会议 ...
戴岩, 白蓝
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Automating the analysis of public saliency and attitudes toward biodiversity from digital media
Conservation Biology, EarlyView.Abstract Measuring public attitudes toward wildlife provides crucial insights into human relationships with nature and helps monitor progress toward Global Biodiversity Framework targets. Yet, conducting such assessments at a global scale presents challenges.
Noah Giebink +8 more
wiley +1 more source
应用CBCT对北京市600颗下颌第一磨牙近中中央根管的发生率及其相关因素的研究
Zhongshan Daxue xuebao. Yixue kexue ban, 2022 目的探讨下颌第一磨牙（MFM）近中中央根管（MMC）的发生率并分析其相关因素。方法筛选300名患者的600颗MFM，在CBCT阅读软件中观察其是否存在MMC，并将年龄、性别、牙位和有无根管峡区（RCI）列为可能的相关因素，用SPSS23.0 logistic回归分析筛选相关因素。结果600颗纳入的MFM中存在MMC的有80颗，且二元回归分析中年龄和有无根管峡区作为相关因素差异有统计学意义（P＜0.05）。结论MMC在MFM中的发生率约为13.3%，并非传统意义上的“罕见 ...
高莹
doaj
Construction of Normalized cDNA Library from Hepatopancreas of Abalone Haliotis diversicolor supertexta Exposure to Tributyltin [PDF]
, 2009 用rdP试剂提取三丁基锡暴露诱导的杂色鲍肝胰腺总rnA,经OlIgOTEX纯化得到MrnA;应用SMArT技术合成双链CdnA,双链特异核酸酶(dSn)进行双链CdnA的均一化,构建了杂色鲍三丁基锡暴露诱导下的均一化CdnA文库。原始文库的库容为4.3x106Cfu/Ml,重组率为97.9%。从文库中随机挑选了3288个克隆进行测序,得到3048个高质量EST序列,其中有370条COnTIgS,2103条SInglETS,unIgEnES共2473条,冗余率为18.86%。以上结果说明该文库质量较好 ...
张子平 +3 more
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A Systematic Scoping Review of Self‐Regulated Learning With AI in Language Education
International Journal of Applied Linguistics, EarlyView.ABSTRACT The rapid development of artificial intelligence (AI) technology has brought new opportunities for second/foreign language (L2) education while also raising concerns about the use of AI tools. This systematic scoping review provides a snapshot of the current state of research situated at the intersection of self‐regulated learning (SRL) and AI
Zheng Zhang, Sihan Zhou, Barry Bai
wiley +1 more source
Dianci bileiqi, 2019 为了解决配电网中性点接地方式具有的人身安全、接地选线及供电可靠性问题,开发了基于故障相智能接地处理方式的配电网多功能安全接地处理装置,该装置采用了铁磁谐振动态预警判断技术、分区式故障相选相技术、故障性质的智能判断与处理技术和自适应接地选线技术解决了配电网铁磁谐振动态预警、判断与处理,解决了过渡电阻接地时的精准选相,解决了故障性质的智能判断与处理,能使瞬时性故障快速恢复,使永久性故障选线精确率提高到百分百,能处理0-2 000 A的故障电流。装置经在电网的试验及运行效果证明 ...
李政洋 +4 more
doaj
Zhejiang Daxue xuebao. Lixue ban, 2016 为在方案设计初期与工程造价相关信息很少的条件下，准确快速地预测住宅工程造价，在分析既往相关理论和方法优劣的基础上，选取支持向量机构建住宅工程造价预测模型，并通过主成分分析对原始数据进行降噪处理.选取住宅工程造价预测指标集与样本，对输入指标的数据进行主成分分析，消除指标相关性的同时对原始数据降维，将处理后的数据分别导入到“标准支持向量机”和“最小二乘支持向量机”模型中进行训练和预测，并对预测结果进行对比分析，选取较为合理的预测模型，通过参数寻优进一步优化预测效果.所构建预测模型的相对误差均控制在±7%以内，
QINZhongfu(秦中伏) +3 more
doaj +1 more source
International Journal of Applied Linguistics, EarlyView.ABSTRACT Although the use of AI technologies (e.g., chatbots and automated writing evaluations (AWE)) has gained considerable attention in language learning fields in recent years, how AI technologies have been designed and implemented in language learning education, as well as their effectiveness, is understudied.
Shen Qiao +2 more
wiley +1 more source
马铃薯遗传转化系统的优化及禽流感病毒(H5N1)基因的导入 [PDF]
, 2000 通过对以马铃薯 (Solanum tuberosum L .)块茎为受体的农杆菌转化系统进行优化 ,筛选出使三个品种 (鲁引 1号、克新 3号、优金 )的受体均可得到高频分化的培养基 :MS+2 .0 mg/L BA+3.0mg/L ZT+0 .5mg/L NAA+0 .5mg/L GA.对几种农杆菌转化条件的比较研究发现 ,菌体用 Ms+0 .5mg/L GA液体重悬并稀释 4倍 ,与受体于 2 8℃ ,10 0 r/min振荡侵染 2 0～ 30 min,共培养时在分化培养基上加 30 μ mol ...
夏宁邵 +8 more
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