Results 21 to 30 of about 9,066 (110)
International Journal of Applied Linguistics, Volume 36, Issue 1, Page 522-539, February 2026.ABSTRACT This paper examines the features of metadiscourse across different teacher moves in university linguistics classroom discourse and the teaching strategies reflected in its use. The results reveal that teachers employ diverse metadiscourse during classroom interactions to support student reasoning.
Jingjie Li, Wenjie Hu
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Shuitu Baochi Xuebao, 2003 植被的分布格局与土壤性质空间异质性密切相关。对降水小于200mm地区的沙坡头无灌溉条件下流沙固定过程中土壤性质的空间变化进行了研究。结果表明,随固沙植物群落的演变和土壤成土环境的改善与生物地球化学循环过程的加强,土壤性质发生了显著的变化:(1)固沙区土壤机械组成中粘粒(<0.001mm)含量、土壤水溶性盐(EC电导率)、pH、有机质和全氮含量都较流沙区有很大提高,且差异显著(p<0.05);固沙区土壤剖面性质的改变主要发生在结皮层和0～5cm的表层(topsoil),受表层土壤发育的影响5 ...
贾晓红 李新荣 王新平 樊恒文 赵金龙
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Rare Metals, Volume 45, Issue 1, January 2026.ABSTRACT Low conductivity and poor oxygen reduction reaction (ORR) catalytic activity limit the bifunctional catalytic performance of layered double hydroxide (LDH) in zinc–air batteries. In this work, an efficient bifunctional electrocatalyst was prepared by loading nitrogen and phosphorus co‐doped carbon quantum dots (NPCQDs) onto a cationic‐vacancy ...
Wenhao Tang +4 more
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Public perception of Ghana's Free Senior High School policy: A north–south comparative analysis
Review of Policy Research, Volume 43, Issue 1, January 2026.Abstract Ghana's Free Senior High School (SHS) policy, implemented in 2017, aims to increase access to secondary education, promote equity, enhance educational outcomes, and foster human capital development. This study examines public perception of the Free SHS policy, focusing on the variations between the northern and southern regions of Ghana and ...
Michael K. Dzordzormenyoh +3 more
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Zhejiang Daxue xuebao. Lixue ban, 2014 在地统计和GIS的支持下，以半方差函数为工具，研究了豫中烤烟种植区烟叶氯含量和土壤养分的空间变异性特征，并进行相关分析.运用普通克立格法进行最优无偏线性插值，制作了研究区内烤烟烟叶中氯含量和不同土壤养分的空间分布图.结果表明：研究区内烤烟烟叶中氯含量符合指数模型，其空间变异性受结构性的因素影响较大.土壤属性中，土壤全磷、有效氮、速效钾、氯含量为中等程度的空间变异性，其余的都为弱空间变异性；分维数最高的是土壤有效氮和阳离子交换量，最低的是有机质、pH和硅.相关性分析表明，烟叶氯含量与土壤pH、土壤Cl ...
CHENHaisheng(陈海生) +1 more
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Finding floral and faunal species richness optima among active fire regimes
Conservation Biology, Volume 39, Issue 6, December 2025.Abstract Changing fire regimes have important implications for biodiversity and challenge traditional conservation approaches that rely on historical conditions as proxies for ecological integrity. This historical‐centric approach becomes increasingly tenuous under climate change, necessitating direct tests of environmental impacts on biodiversity.
Zachary L. Steel +8 more
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Shuitu Baochi Xuebao, 2005 分析水电工程建设前后流域水质时空特征对于研究水电工程对流域水生生态系统以及河岸带生态系统的影响具有重要意义。以澜沧江流域中段为研究区域,通过对10多年的多个断面水质监测资料分析,研究了以铜、铅、锌、镉为代表的金属元素以及氮磷等水质指标的时空分布特征。结果表明:建坝后金属元素的空间分异性比建坝前要明显,但在库区分异性不大;运用ATU(急性毒性度)能更好地反映金属元素指标变化情况,建坝后ATU值小于建坝前,沿干流逐渐减小,时间分异性比建坝前要弱。氮和磷浓度库区比非库区要高,最大值一般出现在大坝出水不远的断面,
姚维科 杨志峰 刘卓 崔保山 董世魁 刘杰
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Shuitu Baochi Xuebao, 2001 湿地土壤养分是时空连续的变异体,不论尺度大小均具有高度的空间异质性.湿地土壤养分变量属于区域化变量,同时具有随机性和结构性,仅运用经典的Fister统计方法已经不能满足土壤空间异质性研究的需要.地统计学是近几十年发展起来的一门新的空间分析方法,其变异函数则适合于定量研究区域化变量空间结构变异特征,能够全面反映区域化变量的结构性.作者在前人的工作基础上意欲用地统计学的区域化变量理论和变异函数对湿地土壤养分的空间异质性进行定量研究,并对其研究方法进行了构想.＃
白军红 余国营 张玉霞
doaj
Integrative Conservation, Volume 4, Issue 3, Page 430-441, September 2025.Our study identifies southern China, including mountainous regions and islands, as key areas rich in phylogenetic diversity, and phylogenetic endemism of lizards that are currently under‐protected. Current protected areas however do not adequately cover regions that are critical for preserving the evolutionary history of lizards.
Tao Liang (梁涛) +8 more
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Atomic‐scale understanding of interstitial‐strengthened high‐entropy alloys
Rare Metals, Volume 44, Issue 9, Page 6002-6014, September 2025.Graphic abstract Abstract Interstitial alloying has emerged as a powerful strategy to tune microstructure and microproperties of high‐entropy alloys (HEAs) due to the strong interaction of interstitials with constituent elements and crystal defects, which enables the development of advanced alloys with superior mechanical and functional properties. The
Qiang Yu, Shi Qiu, Zeng‐Bao Jiao
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