Results 31 to 40 of about 20,259 (162)
The health risk assessment of heavy metal pollution of marine food in Xiamen market [PDF]
, 2015 海产品味道鲜美、低脂、低胆固醇，是不可多得的健康食品，因此成为厦门居民餐桌上的常客。厦门地处东南沿海，海洋资源丰富，海产品的产量、居民的海产品消费量均位居全国前列。然而近年来包括厦门在内的我国近岸海域重金属污染情况的日益严峻将海产品的食用安全性推到了风口浪尖。鉴于此现状，本研究对厦门市售的4类12种海产品的典型重金属污染物铅（Pb）、镉（Cd）、铬（Cr）、总砷（As）进行监测和评价，同时对食用海产品的738名厦门市居民进行海产品膳食结构调查，利用美国环保署（EPA）推荐的健康风险评价模型 ...
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Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT Ceramic reinforcement is crucial for crafting ultrastrong and wear‐resistant metallic components. However, pronounced stress concentration and strain incompatibility at ceramic–metal interfaces often trigger microcrack initiation and ceramic spalling exacerbating friction under sliding conditions.
Dongting Li +8 more
wiley +1 more source
Shuitu Baochi Xuebao, 2011 采用室外水稻盆栽试验,研究不同降雨量和植被覆盖与土壤重金属流失的规律.收集降雨后的流失水样和泥沙,分析Pb、Zn、Cd、As这4种重金属的流失总量.结果表明:随着降雨量的增加,流失的水样和泥沙中各重金属的总量都明显增加;而在同一降雨量下,随着植物覆盖程度的增加,流失泥沙逐渐减少,流失各重金属总量也随之减少;4种重金属在水稻环境下的水溶性大小为:Zn＞Cd＞As＞Pb,并且流失泥沙中的重金属含量与本底值相近且明显高于流失水样中的重金属含量.
杨洋 +4 more
doaj
Surface Functionalization of Polymer Substrates through Radiation-Induced Graft Polymerization: Conventional and Controlled Polymerization Techniques [PDF]
, 2018 学位記番号 ...
Jordan F., Madrid +1 more
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Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT The pre‐existing α‐Fe crystals have important effects on the precipitation and growth of nanocrystals and finally determine the comprehensive soft magnetic properties (SMPs) of the nanocrystalline alloys (NAs). In this work, a high content of Cu elements has been added to Nanomet‐type alloys to enhance the gradient heterogeneity in order to ...
Lei Xie +6 more
wiley +1 more source
Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT Zirconium dioxide (ZrO2) thin films are critical materials owing to their thermal stability, mechanical durability, and optical transparency enabling applications in photonic, sensing, and electronic devices. However, achieving uniform deposition via plasma‐enhanced chemical vapor deposition (PE‐CVD) has remained challenging due to poor ...
Nour Manafikhi +4 more
wiley +1 more source
Shuitu Baochi Xuebao, 2011 从泰山著名景区红门、斗母宫、中天门、南天门、碧霞祠、玉皇顶采集土壤样品,进行了旅游活动对土壤重金属污染的影响研究,并分析了景点土壤重金属含量对土壤酶活性的影响。结果表明:随着旅游业的快速发展旅游活动已经造成了泰山景区重金属的污染,从重金属综合污染指数看,污染最严重的景点是中天门(3.75),其次是碧霞祠;从重金属污染分级指数看污染最严重的两种元素是Pb和Zn。旅游活动对土壤酶活性造成了显著影响,影响程度随旅游强度和干扰类型有不同的变化,但土壤酶活性均表现为下降的趋势 ...
王全辉 +5 more
doaj
Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT Sodium metal batteries (SMBs) are regarded as promising candidates for next‐generation energy storage systems owing to their high theoretical energy density and low cost. However, their practical development is hindered by the instability of the electrode–electrolyte interphase (EEI), particularly under high‐voltage operation.
Xingyu Yang +10 more
wiley +1 more source
Shuitu Baochi Xuebao, 2005 通过对排污口附近及对照点的潮滩沉积物中重金属Zn ,Cu ,Cr和Pb的含量分析发现:各采样点沉积物中的重金属含量均高于环境背景值,平均含量约为环境背景值的2～3倍,排污口附近潮滩沉积物中重金属的含量明显高于对照点潮滩沉积物中的含量;各采样点的柱状沉积物中重金属的含量随深度的变化呈现出一定的变化规律;在垃圾填埋场附近高中低潮滩由于距离排污口的远近不同,表层沉积物中重金属的含量依次降低;对各采样点沉积物中重金属含量的相关性分析发现各点沉积物中累积的重金属的来源有所不同 ...
邓焕广 陈振楼 张菊 许世远 姚春霞
doaj
Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT The thermal expansion mismatch between sapphire and Ti‐6Al‐4V (TC4) alloy has traditionally limited the shear strength of ceramic‐metal joints to ≤ 170 MPa. In this study, active brazing with Ag‐35.25Cu‐1.75Ti (wt%) leads to the formation of a dual‐function microstructure, wherein uniformly dispersed submicron Ti3(Cu,Al)3O particles embedded ...
Hairui Liu +13 more
wiley +1 more source