Results 51 to 60 of about 17,616 (201)
, 2007 利用一种自行设计的光合自氧生物膜采样装置,在武汉东湖(重富营养化湖泊)20和100 cm水深处自然培养和收集光合自氧生物膜,研究其生长发育及活性特点。结果表明:富营养化水体中光合自氧生物膜生长经历了潜伏适应期、增长期、脱落期和恢复生长期4个阶段;光合自氧生物膜生物量、胞外多糖含量、COD含量和脱氢酶活性随培养时间延长呈稳定增长趋势;20 cm水深处光合自氧生物膜生长总体上快于100 cm水深处,并且其生物量和活性也较高;光合自氧生物膜的生理特征与一般天然水体中生长的相似 ...
丰民义 +4 more
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Rare Metals, Volume 45, Issue 1, January 2026.ABSTRACT Nanozymes have attracted considerable attention in cancer therapy due to their adjustable enzyme activity and high catalytic efficiency. However, they still face a major challenge from tumor metastasis. In this work, endogenous/exogenous dual‐responsive bimetallic hollow PdRu (termed HPdRu) nanozymes were prepared.
Nan‐Nan Zheng, Xin Hu, Jun‐Qing Hu
wiley +1 more source
Shuitu Baochi Xuebao, 2011 土壤微生物是土壤的重要组成部分,对土壤肥力的形成和植物营养的转化起着积极的作用,是土壤肥力和环境变化的重要指标。通过土壤微生物量测定,研究新银合欢植物篱对紫色土区坡地农耕地、经济林地2种土地利用方式及10°,15°坡度下0-20cm土层土壤微生物特性的影响。研究发现:新银合欢植物篱可以明显提高土壤中细菌、放线菌、真菌的数量及微生物量碳、氮含量;植物篱对经济林地小区土壤微生物数量,微生物量碳、氮的影响作用总体上大于对农耕地小区的,同时对10°农耕地的影响作用总体上大于对15°农耕地的;下坡的三大微生物数量,
郭甜 +7 more
doaj
GUO Jian-fen1; 2; YANG Yu-sheng2*; CHEN Guang-shui2; LIN Peng1 1 College of Life Science; Xiamen University; Xiamen; P. R. China 2 College of Geography Science; Fujian Normal University; Fuzhou; P. R. China; [PDF]
, 2005 尽管溶解有机碳(DOC)和溶解有机氮(DON)在森林养分循环中的作用日渐为人们所关注,但对它们的浓度及动态,特别是对亚热带森林DOC 和DON 的研究甚少。本文于2002 年通过野外天然降水及亚热带木荷和杉木人工林(monoculture plantations of Schima superba and Cunninghamia lanceolata,15 年生)穿透雨和树干茎流各水样的收集及室内各水样中DOC、NO3 -N、NH4 -N 和总溶解有机氮(TDN)浓度的测- +定,其中DON ...
杨玉盛 +3 more
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Rare Metals, Volume 45, Issue 1, January 2026.ABSTRACT Vanadium oxides are deemed competitive cathode candidates for aqueous zinc‐ion batteries (AZIBs), benefited from their high theoretical capacity and multiple crystalline structures. However, the sluggish reaction kinetics, poor reversibility, and high solubility have hindered the practical application.
Xiaoyu Fan +7 more
wiley +1 more source
Some Impacts of Egret Colonies on the Heronry Soils Nutrition and Heavy Metal level [PDF]
, 2009 对厦门白鹭自然保护区鸡屿岛上的鹭类集群营巢地的表层土壤进行测定，比较繁殖前营巢地、繁殖后的营巢地及非营巢地土壤当中的营养元素全氮(N)、全磷(P)、全钾(K)的含量，以及重金属元素铜(Cu)、锌(Zn)、铬(Cr)、镉(Cd)的含量.土壤样品用微波消化法消化，土壤氮用凯氏定氮法测定，土壤磷用钼蓝比色法测定，土壤钾、铜、锌、镉、铬用原子吸收法测定。实验测得，繁殖前营巢地土壤全氮百分含量为0.038±0.006；全磷百分含量为0.086±0.015；全钾百分含量为1.049±0.048 ...
李伟
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Rare Metals, Volume 45, Issue 1, January 2026.ABSTRACT High‐entropy alloys (HEAs) have emerged as a transformative class of materials distinguished by their complex chemical compositions, unique microstructures, and remarkable mechanical and functional properties. Traditionally, the discovery and optimization of HEAs have relied on conventional methods, including trial‐and‐error experimentation ...
Chrispin Ouko Zamzu +2 more
wiley +1 more source
Rare Metals, Volume 45, Issue 1, January 2026.ABSTRACT Diffusion bonding (DB) of near‐α titanium alloys requires high temperatures, which can cause grain coarsening, structural deformations, and degradation of the workpiece's mechanical characteristics. In this study, thermal hydrogen processing (THP) was applied to Ti65, combined with selective magnetron sputtering of a Ti‐Al thin film to promote
Liang‐Wei Kang +9 more
wiley +1 more source
Establishment of axenic algal culture of bloom causing alga and study on a specific algae-lysing microorganism [PDF]
, 2011 赤潮是一种严重的全球性海洋灾害，对公众健康、海洋环境、水产业和自然资源造成了严重负面影响。由于目前治理赤潮采取的物理和化学手段都存在着一些弊端，而生物防治方法因为有着安全、经济、高效等特点受到关注，特别是利用微生物方法治理赤潮受到学者们的广泛关注。 本论文探索了固体平板培养藻的方法；改良了藻培养液除菌技术，成功获得了三株无菌的藻培养体系；利用双层平板法从厦门海域分离到了一株能裂解三角褐指藻的溶藻微生物——PTV1，利用三角褐指藻的无菌培养体系纯化了PTV1，并对其进行了鉴定；探索了其溶藻方式 ...
黄丽萍
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Functional Ecology, Volume 40, Issue 1, Page 163-175, January 2026.Read the free Plain Language Summary for this article on the Journal blog. Abstract Grazing by large herbivores is a critical factor shaping grassland biodiversity and ecosystem functioning worldwide, yet its consequences for soil communities remain poorly understood.
Quanhui Ma +12 more
wiley +1 more source