Results 41 to 50 of about 5,854 (159)
, 2007 沉水植物对重金属的积累净化和受害机理研究主要集中在4个方面:(1)沉水植物对重金属(包括放射性物质)的吸收、积累和净化作用;(2)沉水植物对重金属的抗性强弱和机制;(3)沉水植物用于监测水体的重金属污染:(4)沉水植物的重金属胁迫机制,包括重金属对植物形态和显微结构的损伤,对植物抗氧化酶系统的影响,对植物的叶绿素、蛋白质以及光合与呼吸作用等生理生化指标的影响,植物对重金属的吸附和转运动力学 ...
吴振斌, 靳萍, 马剑敏
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Functional Ecology, Volume 39, Issue 5, Page 1274-1287, May 2025.Read the free Plain Language Summary for this article on the Journal blog. Abstract Interactions between plants and soil microorganisms in the rhizosphere are vital for maintaining the nutrient cycle and stability of terrestrial ecosystems. Nitrogen, closely related to carbon (C) cycling and ecosystem productivity, undergoes transformation by soil ...
Ru Wang +9 more
wiley +1 more source
Study on enrichment methods of polycyclic aromatic hydrocarbons in flue gas from coal combustion [PDF]
, 2005 介绍了燃煤电厂烟气中排放的多环芳烃污染物的富集方法,比较了各种富集技术的特点与使用情况,分析了多环芳烃富集过程中的质量控制与质量保证措施,并探讨了富集采样中的若干注意事项。This paper summarizes the enrichment methods of polycyclic aromatic hydrocarbons(PAHs) in flue gas from coal combustion.The article also introduces the measures of ...
陈进生
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Functional Ecology, Volume 39, Issue 2, Page 621-634, February 2025.Read the free Plain Language Summary for this article on the Journal blog. Abstract Tropical forests are generally characterized by high species diversity and low soil phosphorus (P) availability. Although tropical plants have evolved adaptations to low soil P availability, we know relatively little about the strategies of different groups of species ...
Yingxu Fan +11 more
wiley +1 more source
Zhongguo youzhi为了促进沙棘籽油的开发和利用，采用化学酯交换（乙酯化）法结合尿素包合法对沙棘籽油中α-亚麻酸（ALA）进行富集，以沙棘籽油脂肪酸乙酯得率及ALA乙酯（ALA-EE）含量为指标，采用单因素实验对化学酯交换法工艺条件进行优化，采用单因素实验和正交实验对尿素包合富集工艺条件进行优化。结果表明：乙酯化的最佳条件为反应时间1.5 h、反应温度70 ℃、催化剂添加量1.0%（以沙棘籽油质量计）、醇油物质的量比8∶ 1，在该条件下沙棘籽油脂肪酸乙酯得率为8182%，ALA-EE含量为33.41 ...
杨丹玮1,2，刘晨星2，戴贤君1，夏其乐2,曹艳2 YANG Danwei1,2, LIU Chenxing2, DAI Xianjun1, XIA Qile2, CAO Yan2
doaj +1 more source
Establishment and Characterization of a Targeting Tumor Vesseles System for Inducing Thrombosis [PDF]
, 2014 目的建立一种新型的靶向高效诱发肿瘤血管血栓栓塞体系磁流体-神经纤维网蛋白1抗体A6-链霉亲和素:生物素-短截型组织因子(Mf-A6-SA:b-TTf)。方法化学交联技术制备神经纤维网蛋白1抗体A6-链霉亲和素、磁流体-神经纤维网蛋白1抗体A6-链霉亲和素和生物素-短截型组织因子交联物,凝血因子X活化实验鉴定复合体系活化凝血因子X的活力,荧光显微镜技术和普鲁士蓝染色法同时观察施加外界磁场后复合体系的靶向作用,凝血实验直接观察复合体系引入链霉亲和素:生物素的生物放大效应,体内生物分布实验观察复合体系的安全性。
吕莎 +9 more
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Integrative Conservation, Volume 3, Issue 4, Page 342-352, December 2024.Human activity, particularly the increase in forested areas across the western Mediterranean, has impacted squamate diversity. This study investigated the impact of canopy cover on squamate assemblages, finding the highest diversity in areas with moderate tree cover.
Daniel Escoriza, Félix Amat
wiley +1 more source
Shuitu Baochi Xuebao, 2011 通过田间试验与室内分析相结合的方法研究长期不同施肥处理下土壤颗粒组成及其有效磷富集。结果表明,各施肥处理土壤颗粒组成都呈现颗粒愈小比例愈高的规律,而不同施肥处理对同一粒径颗粒含量又有一定的影响。在单施磷肥(P)的基础上,配施氮肥、有机肥(NP、PM、NPM ...
陈璐, 党廷辉, 杨绍琼, 戚瑞生
doaj
HPCE Determination of Ephedrine Hydrochloride and Pseudo-Ephedrine Hydrochloride in Drugs with Enrichment by Electro-stacking [PDF]
, 2011 应用电堆积柱上富集-高效毛细管电泳法测定了6种药品中盐酸麻黄碱和盐酸伪麻黄碱含量。试验选择了以下分析条件:1检测波长205 nM;2内标物为间苯二酚;3运行液为PH9.2的40 MMOl·l-1硼砂缓冲溶液;4分离电压20 kV;5进样时间10 S;6分离温度25℃。麻黄碱及伪麻黄碱质量浓度在1--400 Mg·l-1之间与相应的相对峰面积值(即被测物与内标物的峰面积之比)呈线性关系。方法的检出限(3S/n)为0.35 Mg·l-1(麻黄碱)和0.29 Mg·l-1(伪麻黄碱 ...
卢艺平 +4 more
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