Results 21 to 30 of about 1,267,064 (100)

From Indicator to Prediction: Five Decades of Biochemical Oxygen Demand Research in Tropical Freshwaters

open access: yesWorld Water Policy, Volume 12, Issue 4, November 2026.
ABSTRACT Biochemical oxygen demand (BOD) remains a core indicator of organic pollution in freshwater monitoring, but its role in water policy and practice is changing as water‐quality assessment moves toward predictive, integrative, and decision‐support approaches.
Isadora Favero Roque Cenci   +5 more
wiley   +1 more source

Tracing change in the public perception of plants: insights from archives and social media in China

open access: yesPLANTS, PEOPLE, PLANET, Volume 8, Issue 5, Page 1853-1871, September 2026.
As urbanization accelerates, historic gardens serve as vital cultural treasures that offer spiritual and cultural support to the public. This study proposes an innovative approach that merges historical records from the Qing Dynasty with contemporary social media data to explore changes in public perceptions of these gardens.
Dong Xu   +4 more
wiley   +1 more source

土壤重金属形态对径流中重金属流失的影响

open access: yesShuitu Baochi Xuebao, 2004
土壤重金属的积累可促进地表径流中重金属的流失,流失量与土壤中重金属的形态有关。田间观测和室内模拟淋洗试验的结果都表明,径流或淋出液中重金属主要来源于土壤的交换态(包括水可溶态)重金属;土壤重金属总量与径流中重金属浓度相关不明显;用稀盐(0.01mol/LCaCl2)和1mol/LNH4OAc提取的土壤重金属量与径流和淋出液中重金属浓度都呈显著的相关,可较好地表征土壤中重金属流失潜力。
章明奎 夏建强
doaj  

Metal‐Filamentary Memristor‐Based Artificial Neurons for Embodied Neuromorphic Intelligence

open access: yesRare Metals, Volume 45, Issue 9, September 2026.
ABSTRACT Embodied neuromorphic intelligence represents a transformative paradigm for next‐generation intelligent systems, with broad implications for robotics, autonomous driving, intelligent manufacturing, and smart infrastructures. Neuromorphic chips enable bioinspired computing with sparse, heterogeneous representations and spatiotemporal dynamics ...
Tianci Huang, Zuqing Yuan, Qilin Hua
wiley   +1 more source

绿色食品产地土壤重金属空间分布与污染评价

open access: yesShuitu Baochi Xuebao, 2007
为研究绿色无公害食品产地土壤重金属的含量与分布状况,以慈溪市周巷镇为研究区,利用综合指数法对土壤中重金属的含量进行评价,应用地统计学的方法分析土壤重金属含量的空间变化,并绘制土壤重金属的空间分布图。结果表明:以当地土壤重金属的自然背景为评价标准,所研究的8种重金属单项污染指数均大于1,说明8种重金属在该区均产生污染。以内梅罗指数法计算的土壤重金属综合污染指数为1.54,处于轻微污染的级别。研究区由北向南随地理位置和土地利用方式的不同,土壤中重金属含量有逐渐增高的趋势。不同剖面土壤重金属含量的研究表明 ...
刘庆   +4 more
doaj  

The Evolution of Metal Halide Perovskite Transistors

open access: yesRare Metals, Volume 45, Issue 9, September 2026.
ABSTRACT Metal halide perovskites (MHPs) offer a revolutionary pathway for next‐generation field‐effect transistors (FETs) because of their exceptional carrier mobilities and cost‐effective processability. However, their transition to practical electronics is significantly challenged by intrinsic instability and imbalanced charge transport. This review
Jiangnan Xia   +8 more
wiley   +1 more source

Defect‐Modulate Nanoalloy Catalysts Enable Efficient Catalytic Conversion in Lithium–Sulfur Batteries

open access: yesRare Metals, Volume 45, Issue 8, August 2026.
ABSTRACT To address critical issues in lithium–sulfur batteries, such as slow polysulfide conversion kinetics and shuttle effects, we designed and synthesized a high‐performance nanoalloy catalyst through a defect reconstruction strategy, aiming to enhance the electrochemical performance of batteries.
Zhijun Zhao   +10 more
wiley   +1 more source

煤矿区矸石山周边土壤重金属污染特征与规律

open access: yesShuitu Baochi Xuebao, 2007
以山东某矿区为例,通过淋溶模拟实验,研究了煤矸石中重金属的淋溶规律,并探讨了煤矸石山周边土壤重金属污染特征.结果表明:风化矸石淋滤液中的Zn、Pb、Cr和Cu浓度较高,并很快稳定;新鲜矸石在淋溶初期检出Zn,其它重金属元素没有检出;风化矸石淋滤液中重金属的含量要高于未风化矸石.矸石山周边表层土壤中的Zn、pb、Cr和Cu较高,且浓度高出矸石淋溶液许多倍,表明煤矸石中重金属淋滤具有长期性,矿区土壤对重金属具有迁移性和富集性.表层土壤重金属含量随着距煤矸石堆的距离增加而呈明显的下降趋势 ...
张明亮, 王海霞
doaj   +2 more sources

Insights Into the Temperature‐Dependent Oxidation Mechanism of Metallic Cerium in H2O‐N2 Atmospheres

open access: yesRare Metals, Volume 45, Issue 8, August 2026.
ABSTRACT Metallic cerium (Ce), a widely used surrogate for actinide metals, enables mechanistic studies of reactions in complex gas environments under controlled and safer laboratory conditions. Here, the oxidation behavior of Ce in H2O‐N2 mixed atmospheres was investigated from 200°C to 350°C using in situ thermogravimetry–mass spectrometry, in situ X‐
Kun Huang   +10 more
wiley   +1 more source

工业园印染污水中重金属识别与集中处理技术研究

open access: yesGongye shui chuli, 2013
近年来,印染加工过程中采用了大量的含重金属物质的染料和助剂,这些物质进入水体后致使生化处理工艺中微生物死亡,造成污水处理厂瘫痪,因此需加强重金属监测与治理。重点阐述了水体中重金属传统的及新型的处理技术,为工业园区印染废水处理厂降低重金属对工艺的影响和提高重金属的去除效率提供理论依据。
李珍珍   +4 more
doaj   +2 more sources

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