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Monitoring and Analysis on Eutrophication Status in Baoan Lake of Hubei Province [PDF]
, 2022 [Objective] The spatio-temporal characteristics of the eutrophication status in Baoan Lake, and the key water environmental impact factors were studied in order to provide a basis for ecological restoration and protection. [Methods] Monitoring sites were
Chen Jiaxin +4 more
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, 2018 对长江口的柱状沉积物进行了总磷测定,并运用SEDEX方法分析了长江口柱状沉积物中5种形态磷的含量和分布。研究结果表明,柱状样沉积物不同站位各种形态磷的垂直分布各不相同,由表至底呈现多种分布状态,与沉积环境、沉积后的成岩作用有关。长江口柱状样沉积物有机磷的降解速率常数变化结果表明,长江口海域有机磷的降解主要发生在沉积物表层和次表层。2个柱状样沉积物中氮磷比远低于16∶1,说明长江口近岸海域沉积物中的磷主要来自陆源。对柱状样的年代分析表明,总磷含量随年代的变化有明显的区域特征性 ...
安明梅, 王益鸣, 郑爱榕
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Shuitu Baochi Xuebao, 2022 以亚热带常绿阔叶林建群种米槠(Castanopsis carlesii)凋落叶为研究对象,对照地表环境,研究了溪流和间歇性溪流凋落叶分解过程中水溶性有机碳、氮、磷含量变化及其累积损失特征。结果表明:(1)3种生境中凋落叶水溶性有机碳的含量在分解过程中均表现出逐渐降低的趋势,但在溪流中降低程度最大,损失率达92.18%;水溶性氮含量在溪流和间歇性溪流释放时间提前,其变化程度相对较小;相比于地表和间歇性溪流,溪流中的凋落叶水溶性磷含量在分解过程中持续降低,损失率达86.75%。(2)相对于地表 ...
郑旭灵 +4 more
doaj
Shuitu Baochi Xuebao, 2007 通过环境因子（温度、pH、扰动、溶解氧等）及沉水植物对底泥磷释放影响的研究，分析了环境因子影响底泥磷释放的因素，及不同环境条件下沉水植物影响底泥磷释放的因素，得出了如下结论：溶解氧、pH、温度及扰动等对底泥磷向上覆水体释放都有一定影响，其中溶解氧和pH值影响较大；湖泊特别浅水型湖泊中，磷对水体富营养化起重要作用；沉水植物在控制湖泊底泥营养向水体扩散、风等外界因素扰动底泥起关键作用；浅水型湖泊中，湖泊底泥受扰动较大适合种植象狐尾藻类多分枝的沉水植物，这样有利于抑制底泥磷向水体的释放．
蔡景波 +5 more
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Shuitu Baochi Xuebao, 2006 拟议中的“引江济淮”调水工程涉及到长江、淮河两大河流，瓦埠湖为其中的一个重要湖泊，其水质是否受到调水的影响为该工翟关注的环境问题之一。分析了外界环境因子变化对瓦埠湖底泥在不同环境条件下以及干、湿沉积物样品磷释放的差异，环境因子分别选取了不同磷浓度的上覆水、光照、pH、温度、DO、微生物、水体扰动等。结果表明：湿样释磷能力明显高于风干样品；上覆水体磷的浓度对底泥释磷能力有较强的调节作用；光照对底泥释磷影响不明显，但温度对底泥的释磷有较明显的影响，磷的最大释放量与之呈正相关 ...
潘成荣 +4 more
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Zhejiang Daxue xuebao. Lixue ban, 2008 对纳米羟基磷灰石颗粒对成骨前体细胞MC3T3E1的增殖和分化的影响进行了研究.采用四唑盐比色法(MTT)、碱性磷酸酶检测及矿化结节染色的方法分析了羟基磷灰石纳米颗粒悬液对成骨前体细胞的增殖和分化的影响.同时用纳米羟基磷灰石悬液的浸出液及吸附条件培养液后的纳米颗粒制备悬液分别处理细胞，探讨钙离子释放和蛋白吸附在成骨前体细胞增殖和分化过程中的作用.结果表明：在0~50 µg • mL-1，纳米羟基磷灰石颗粒对成骨前体细胞的增殖有一定抑制作用，且随着浓度的增加抑制作用也相应加强.10 µg • mL ...
WUYuan(吴苑) +5 more
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Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT Constructing a porous scaffold with the essential features of natural cancellous bone, including structural architecture and biochemical cues, is one of the pivotal factors for effective bone regeneration. In this study, a biomimetic composite porous Gelatin fibrous scaffold (SrHA/Gelatin) incorporating ultralong strontium‐doped hydroxyapatite
Yin‐Chuan Wang +8 more
wiley +1 more source
Influence of cage culture on methylmercury in water column of reservoir [PDF]
, 2012 To understand the influence of cage culture on the methylmercury production and distribution in water column of reservoir, water samples were collected from four cage culture sites in Wujiangdu Reservoir in September (warm season), 2010 and in March ...
Feng, Caiyan +3 more
core
, 2018 锰是人体必需微量元素,但近年来河流湖库等地表水锰超标现象时有发生,威胁供水安全.本文于2016—2017年在福建省九龙江流域开展水系沿程梯度调查及机理实验,结合历史监测资料综合研究,探明九龙江锰含量的时空分布与迁移转化规律,揭示九龙江锰的污染来源、超标成因与调控机制.结果表明,溶解锰高值及超标站位集中在北溪上游矿区支流和干流部分水库,且主要发生在枯水期;上游矿区支流颗粒锰含量最高,随后从上游到下游沿程递减,且与总悬浮颗粒物(TSM)和pH显著正相关(p7.8)环境促进亚热带红壤颗粒富集锰 ...
姜艳 +6 more
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Rare Metals, Volume 45, Issue 2, February 2026.ABSTRACT The limited osteogenic capacity of magnesium phosphate cement (MPC) has constrained its biomedical applications, underscoring the necessity to develop MPC with enhanced physical properties and bone‐forming capabilities. In this study, a multifunctional MPC system was developed by incorporating zoledronic acid‐loaded near‐infrared (NIR ...
Bin Wang +8 more
wiley +1 more source