Results 31 to 40 of about 16,838 (184)
Rare Metals, Volume 45, Issue 5, May 2026.ABSTRACT Composite materials hold significant potential for abrasive sealing, yet composite materials used for abrasive sealing fall short in service durability under extreme environments. Here, a controllable strategy for adjusting pore structure is proposed, aiming to design a YSZ(ESP)/BN@ZrO2‐polyester coating with hybrid micron/nanometer ...
Shuang Yu +8 more
wiley +1 more source
, 2006 福建邵武将石地区的植物区系处于泛北极植物区,中国-日本森林植物亚区的华东地区,有维管束植物173科461属915种(含种下单位).该区植物种类丰富,具有许多珍稀、古老、孑遗植物成分.在科、属水平上对其区系特征进行了分析,结果表明:热带分布类型的科占绝对优势,共77科,占53.1%;温带分布类型有37科,占25.5%;属的区系成分中,属的热带分布类型计197属,占区总属数的52.2%,温带分布类型共有169属,占44.9%.可见该植物区系的热带、亚热带成分占主导地位,温带成分次之 ...
侯学良, 李振基, 林鹏, 陈俊德
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Functional Ecology, Volume 40, Issue 5, Page 1415-1427, May 2026.Read the free Plain Language Summary for this article on the Journal blog. Abstract Wildfires are disrupting and regenerating forces in nature that affect all ecosystem components. However, the impact of wildfires on soil multitrophic biodiversity and the resulting consequences for ecosystem multifunctionality (EMF) remain poorly understood.
Juan Zhou +6 more
wiley +1 more source
Shuitu Baochi Xuebao, 1994 降雨径流集存系统由集水、输水和存水三个子系统组成，它把大面积集水区的降雨径流汇集到小面积存水区的土壤水库中，变少雨为多水，是半干旱与干旱地区利用降雨径流资源发展旱作农业的高效系统。根据农田土壤水分平衡方程和植物需水量与供水量的对比关系可以定量确定系统中存水区与集水区的面积比。小型径流场、集流梯田和微型集水区是当前使用最多，效果最好的降雨径流集存形式。
李克煌
doaj +2 more sources
野生动物学报, 1983 我们于1980—1982年先后在辽宁省西部的五个地理景观区内设了11个调查点,对各区鼠类组成及种群数量作了调查（每一调查点布夹不少于300夹次）。现将调查结果并参照其它有关资料,对这一地区啮齿动物的种类分布、组成以及数量同地理景观的关系等问题整理如下:自然概况辽宁西部系指辽河以西地区,包括朝阳、锦州、阜新 ...
李维贤 +4 more
doaj
, 2007 武湖现有鱼类50种,其中鲤科鱼类33种,占总数的66%。渔获物组成中,鲢、鳙、鲤、鲫、鲌的产量占总产量的93%左右,渔获物以低龄为主。武湖目前的主要增养殖方式是放养鲢鳙,通过投放无机和有机化肥培养浮游生物来达到增加鲢鳙鱼产量的目的。针对武湖的渔业资源现状和渔业可持续发展的需要 ...
刘家寿 +6 more
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Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT Eutectic high‐entropy alloys (EHEAs) have attracted significant attention due to their balanced mechanical properties and promising applications. Nonetheless, the correlation between the solidification mechanism of eutectic microstructures and their mechanical properties remains elusive.
Yi Qin +15 more
wiley +1 more source
Analysis of the seed plant flora in the nature forests of Niumulin nature reserve zone, Fujian Province. [PDF]
, 2001 对福建省牛姆林6个天然林样地的植物区系组成统计分析结果表明,牛姆林天然林的植物种类组成丰富,在2900m~2范围有248种高等植物分属82科153属,其中蕨类植物11科14属16种,裸子植物3科3属3种,被子植物71科136属229种,种子植物属的系数为61.69;区系地理成分较为复杂,属的地理成分以热带分布型为主,63.36％的热带地理成分及32.82％的温带地理成分显示出牛姆林地处南亚热带北缘的地理特点。The study on the flora of six nature forests ...
李裕红
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Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT Lightweight and lead‐free radiation shielding materials remain urgently needed. This work designed a fluorite high‐entropy oxide (FHEO) system through a combined computational–experimental route. Density functional theory based on special quasi‐random structures was used to identify thermodynamically stable fluorites from a wide compositional ...
Xiangjie Duan +9 more
wiley +1 more source
福建梅花山国家级自然保护区常绿阔叶林的群落学特征 [PDF]
, 2011 福建梅花山国家级自然保护区的常绿阔叶林是典型的中亚热带常绿阔叶林之一.9 600 m2样地的调查与分析表明:群落内共有维管束植物258种,其中种子植物228种,隶属于87科156属,植物的科属组成丰富.群落内区系地理成分复杂,热带与泛热带植物区系成分比例明显大于温带与泛温带区系成分,具热带亚热带性质.群落中,中小型革质、全缘、单叶、常绿、木本、高位芽植物是决定其外貌主要因素.群落成层现象明显,可分为2个乔木亚层、1~2个灌木亚层和草本层,层间植物较为丰富.通过不同区域常绿阔叶林的比较 ...
孔祥海, 李振基
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