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Calcium-based polymers for suppression of soil acidification by improving acid-buffering capacity and inhibiting nitrification

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Journal of Environmental Sciences 2024年第5期139卷 138-149页

作者： Fei kang Yunshan Meng Yanning ge Yun Zhang Haixiang Gao Xueqin Ren Jie Wang Shuwen Hu Beijing Key Laboratory of Farmland Soil Pollution Prevention-control and Remediation College of Resources and Environmental SciencesChina Agricultural UniversityBeijing 100193China Department of Applied Chemistry China Agricultural UniversityBeijing 100193China

Soil acidification is a major threat to agricultural sustainability in tropical and subtropical *** and environmentally friendly materials,such as calcium lignosulfonate(CaLS),calcium poly(aspartic acid)(PASP-Ca),and calcium polyγ-glutamic acid(γ-PGA-Ca),are known to effectively ameliorate soil ***,their effectiveness in inhibiting soil acidification has not been *** study aimed to evaluate the effect of CaLS,PASP-Ca,andγ-PGA-Ca on the resistance of soil toward acidification as directly and indirectly(i.e.,via nitrification)caused by the application of HNO_(3)and urea,*** comparison,Ca(OH)_(2)and lignin were used as the inorganic and organic controls,*** the materials,γ-PGA-Ca drove the substantial improvements in the pH buffering capacity(pHBC)of the soil and exhibited the greatest potential in inhibiting HNO_(3)-induced soil acidification via protonation of carboxyl,complexing with Al~(3+),and cation exchange *** acidification induced by urea,CaLS was the optimal one in inhibiting acidification and increasing exchangeable acidity during ***,the sharp reduction in the population sizes of ammonia-oxidizing bacteria(AOB)and ammonia-oxidizing archaea(AOA)confirmed the inhibition of nitrification via CaLS ***,compared to improving soil pHBC,CaLS may play a more important role in suppressing indirect ***,γ-PGA-Ca was superior to PASP-Ca and CaLS in enhancing the soil pHBC and the its resistance to acidification induced by HNO_(3) addition,whereas CaLS was the best at suppressing urea-driven soil acidification by inhibiting *** conclusion,these results provide a reference for inhibiting soil re-acidification in intensive agricultural systems.

关键词： Calcium-based polymer Soil acidification pH buffering capacity Nitrification inhibition

Coordinatively unsaturated cobalt single-atom nanozymes for visual pesticides detection by smartphone-based platform

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Nano Research 2024年第4期17卷 2298-2307页

作者： Fangning Liu Zhe Li Hengya Wei Peng Xu ge kang Shicheng Zhu Tingting Wang Ruxue He Chuanxia Chen Yizhong Lu School of Materials Science and Engineering University of JinanJinan 250022China

By adjusting the coordination environment of single-atom catalysts,the enzyme-like activity can be finely tuned for highly sensitive ***,we demonstrated that coordinatively unsaturated cobalt-nitrogen sites doped within porous carbon(SA-CoN_(3))could serve as highly efficient oxidase *** with the typical planar four-coordination structure(SA-CoN_(4)),the as-obtained single-atom Co nanozymes anchored by three nitrogen atoms are found to display much higher oxidase-like catalytic *** theoretical and experimental analysis revealed that the coordinatively unsaturated Co sites could facilitate adsorption and activation of O_(2) molecule and thus improve their oxidase-like *** on the enhanced oxidase-like activity of SA-CoN_(3),a paper/smartphone sensor for organophosphorus pesticides(OPs)was successfully constructed and used to quantify glyphosate in environmental and food samples with a low detection limit of 0.66μ*** work not only highlights the important role of coordination unsaturation of SA nanozymes for promoting oxidase-like activity,but also provides an easy and cost-effective way to conduct effective quantification of OPs in the field.

关键词： single-atom nanozymes asymmetric organophosphorus pesticides oxygen adsorption smartphone

基于碳纳米管/氧化还原活性带电共聚物间的络合提高电化学电容器

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Chinese Journal of Chemical Physics 2023年第1期36卷 103-112,I0043-I0055,I0002,I0003页

作者：莫光帅葛康康刘光明中国科学技术大学化学物理系合肥微尺度物质科学国家研究中心安徽省教育厅表界面化学与能源催化重点实验室合肥230026

比能量和自放电是电化学电容器的两个重要性能.本文以2,2,6,6-四甲基哌啶-N-氧自由基和紫精作为氧化还原活性单元分别与阳离子单体共聚制备无规共聚物,并通过与羧基化多壁碳纳米管络合制备复合电极,实现两电极装置比能量的提高和自放电... 详细信息

比能量和自放电是电化学电容器的两个重要性能.本文以2,2,6,6-四甲基哌啶-N-氧自由基和紫精作为氧化还原活性单元分别与阳离子单体共聚制备无规共聚物,并通过与羧基化多壁碳纳米管络合制备复合电极,实现两电极装置比能量的提高和自放电的抑制.由于析氢析氧速率慢于氧化还原活性单元的反应速率,从而提高了电解质的分解窗口,增加了两电极装置的比能量.另一方面,碳纳米管与共聚物间的络合抑制了氧化还原活性聚合物链的穿梭和交叉扩散,提升了两电极装置的自放电性能.基于碳纳米管/氧化还原活性带电共聚物间的络合,本工作为提高电化学电容器的比能量并抑制其自放电提供了一种简易通行的策略.

关键词：带电高分子比能量自放电电解质分解窗口络合

Recent advances in functional utilisation of environmentally friendly and recyclable high-performance green biocomposites: A review

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Chinese Chemical Letters 2024年第4期35卷 73-85页

作者： Guiyang Zheng Xuelian kang Haoran Ye Wei Fan Christian Sonne Su Shiung Lam Rock Keey Liew Changlei Xia Yang Shi Shengbo ge Co-Innovation Center of Efficient Processing and Utilization of Forest Resources College of Materials Science and EngineeringNanjing Forestry UniversityNanjing 210037China School of Textile Science and Engineering&Key Laboratory of Functional Textile Material and Product of Ministry of Education Xi'an Polytechnic UniversityXi'an 710048China Department of Bioscience Arctic Research Centre(ARC)Aarhus UniversityFrederiksborgvej 399PO Box 358DK-4000 RoskildeDenmark Sustainability Cluster School of EngineeringUniversity of Petroleum&Energy StudiesDehradunUttarakhand 248007India Higher Institution Centre of Excellence(HICoE) Institute of Tropical Aquaculture and Fisheries(AKUATROP)Universiti Malaysia Terengganu21030 Kuala NerusTerengganuMalaysia Center for Transdisciplinary Research Saveetha Institute of Medical and Technical SciencesSaveetha UniversityChennai 600072India NV Western PLT Georgetown 10400PenangMalaysia Aerospace Kaitian Environmental Technology Co. Ltd.Changsha 410000China Hunan Hongsen Novel Material Technology Co. Ltd.Yiyang 413407China

Humans have relied on biomass for survival and development since the Stone Age. All aspects of human needs for materials are covered by tools, fuel, and buildings. Nowadays, metals and petroleum-based materials are widely used in highly developed industries. Unfortunately, environmental contamination and the loss of natural resources have led to the reemergence of biomass resources as efficient and sustainable energy sources. Notably, simple and direct applications can no longer meet the demand for functionalization, high performance of materials and construction materials. Therefore, it is imperative to modify biomass and combine its utilisation to produce functionalization and high performance materials. For example, construction materials with superior mechanical properties and water resistance can be produced by reinforcing fibres to facilitate crosslinking. Water-oil separation or adsorption effects of hydrogels and aerogels are determined by the porosity and lightness of biomass, biocomposite conductor is prepared by chimaeric conductive material. Here, we review the approaches that have been taken to devise an environmentally friendly yet fully recyclable and sustainable functionalised biocomposites from biomass and its potential directions for future research.

关键词： Biocomposite Renewable Sustainability Advanced functional material Pollution mitigation

具有复杂动力学的多智能体系统分布式优化综述

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控制与决策 2024年第7期39卷 2113-2124页

作者：郭戈康健东北大学流程工业综合自动化国家重点实验室沈阳110819 东北大学秦皇岛分校控制工程学院河北秦皇岛066004 东北大学信息科学与工程学院沈阳110819

多智能体系统分布式优化由于其高效性、灵活性和可靠性等特点吸引了大量学者的关注,在多机器人协同控制、无线传感器网络、能源系统等领域具有广泛的应用前景.分布式优化的基本目标是利用智能体的个体目标函数梯度、自身及其邻居状态信... 详细信息

多智能体系统分布式优化由于其高效性、灵活性和可靠性等特点吸引了大量学者的关注,在多机器人协同控制、无线传感器网络、能源系统等领域具有广泛的应用前景.分布式优化的基本目标是利用智能体的个体目标函数梯度、自身及其邻居状态信息设计分布式控制协议,驱动所有智能体的状态或输出到全局目标函数的最优解,系统动力学是影响智能体状态演化的重要因素.鉴于此,在回顾现有连续时间分布式优化算法的基础上,根据系统动力学分类,尽可能全面地评述具有复杂动力学的多智能体系统分布式优化问题的最新研究进展,并对未来发展方向进行展望.

关键词：分布式优化多智能体系统信息物理系统连续系统线性系统非线性系统

Building decarbonization based on building loads flexibility and clusters' collaboration

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National Science Open 2024年第3期3卷 7-12页

作者： Jian ge Guoquan Lv Jiahuan Tang kang Zhao Department of Architecture Zhejiang University International Research Center for Green Building and Low-Carbon City International CampusZhejiang University

The decarbonization of the building sector is crucial for global sustainable development because it is responsible for about 40%of global carbon emissions and has been growing continuously at a rate of 2%to 3%per year [1].Over time,significant energy-saving milestones have been achieved through technologies such as improving equipment efficiency,building envelope performance,and utilization of sustainable resources.

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In Vivo Modeling of Zebrafish Zinc Finger,MIZ-Type Containing 1 Expression and Its Effect on Pigmentation

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International Journal of Dermatology and Venereology 2023年第1期6卷 15-19页

作者： Yong-Hu Sun Ting-Ting Liu Zi-Hao Mi Chuan Wang Lu-Lu Sun kang-kang ge Dong-Lai Sheng Hong Liu Fu-Ren Zhang Shandong Provincial Institute of Dermatology and Veneurology&Provincial Hospital for Skin Diseases Shandong First Medical University&Shandong Academy of Medical ScienceJinanShandong 250000China Shandong Provincial Key Lab for Dermatovenereology JinanShandong 250000China National Clinical Key Project of Dermatology and Venereology JinanShandong 250000China Hangzhou Normal University HangzhouZhejiang 310000China

Objective:The zinc finger,MIZ-type containing 1(ZMIZ1)gene has been identified as a possible susceptibility gene associated with vitiligo,therefore we conducted this study to investigate the role ofZMIZ1 in ***:We generate a zebrafish loss-of-function model using morpholino oligonucleotides(MOs),and two orthologs of humanZMIZ1 have been annotated(ZMIZ1a andZMIZ1b).The expression profiles of ZMIZ1a and ZMIZ1b and their effects on the pigmentation in zebrafish were evaluated by using whole-mount in situ hybridization and melanin *** analysis was performed using the unpaired Studentt-test or one-way ***:Investigation of the temporal and spatial expressions of these two transcripts suggested that the expressions ofZMIZ1a andZMIZ1b in the brain start to emerge in a ubiquitous fashion from 2 days post-fertilization *** the successful design and validation of MOs,we observed thatZMIZ1a andZMIZ1b MOs caused embryonic developmental delays and malformations in *** analysis of the melanin content in the morphants revealed thatZMIZ1a significantly(49.1%for 0.667 mmol/L inZMIZI1a group,P=0.03)reduced the melanin content in a dose-dependent manner,but only the highest concentration of injectedZMIZ1b MOs significantly(50%for 0.667 mmol/L inZMIZ1b group,P=0.02)reduced the melanin content.A tyrosinase inhibition assay indicated no significant difference between the morphants and wild-type ***:This study successfully modeled a susceptibility gene identified by genome-wide association studies in a zebrafish loss-of-function model and provides insights into the biological mechanism of pigmentation.

关键词： pigmentation zebrafish zinc finger MIZ-type containing 1(ZMIZ1)

Controllability of Semilinear Integrodifferential Degenerate Sobolev Equations

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Journal of Systems Science & Complexity 2024年第5期37卷 1923-1936页

作者： ge Zhaoqiang School of Mathematics and Statistics Xi’an Jiaotong University

In this paper, the approximate controllability of semilinear integrodifferential degenerate Sobolev equations with nonlocal conditions is investigated in the sense of integral solution in Hilbert spaces. Some sufficient and necessary conditions are obtained. Firstly, the existence and uniqueness of integral solutions of semilinear integrodifferential degenerate Sobolev equations with nonlocal conditions are considered by ge-evolution operator theory and Sadovskii's fixed point theorem, the existence and uniqueness theorem of solutions is given. Secondly, the approximate controllability of semilinear integrodifferential degenerate Sobolev equations with nonlocal conditions is studied in the sense of integral solution. The criterion for approximate controllability is provided. The obtained results have important theoretical and practical value for the study of controllability of semilinear integrodifferential degenerate Sobolev equations with nonlocal conditions.

关键词： Approximate controllability ge-evolution operator integral solution Sadovskii’s fixed point theorem semilinear integrodifferential degenerate Sobolev equations

Cryo-EM combined with image deconvolution to determine ZIF-8 crystal structure

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Chinese Physics B 2024年第7期33卷 44-49页

作者：吴抗杨柏松薛文华孙大鹏葛炳辉王玉梅 Information Materials and Intelligent Sensing Laboratory of Anhui Province Leibniz International Joint Research Center of Materials Sciences of Anhui ProvinceInstitutes of Physical Science and Information TechnologyAnhui UniversityHefei 230601China Beijing National Laboratory for Condensed Matter Physics Institute of PhysicsChinese Academy of SciencesBeijing 100190China Beijing Branch of Songshan Lake Materials Laboratory Dongguan 523808China

Metal–organic frameworks(MOFs) are crystalline porous materials with tunable properties, exhibiting great potential in gas adsorption, separation and catalysis.[1,2]It is challenging to visualize MOFs with transmission electron microscopy(TEM) due to their inherent instability under electron beam irradiation. Here, we employ cryo-electron microscopy(cryoEM) to capture images of MOF ZIF-8, revealing inverted-space structural information at a resolution of up to about 1.7A and enhancing its critical electron dose to around 20 e^(-)/A^(2). In addition, it is confirmed by electron-beam irradiation experiments that the high voltage could effectively mitigate the radiolysis, and the structure of ZIF-8 is more stable along the [100] direction under electron beam irradiation. Meanwhile, since the high-resolution electron microscope images are modulated by contrast transfer function(CTF) and it is difficult to determine the positions corresponding to the atomic columns directly from the images. We employ image deconvolution to eliminate the impact of CTF and obtain the structural images of ZIF-8. As a result, the heavy atom Zn and the organic imidazole ring within the organic framework can be distinguished from structural images.

关键词： cryo-electron microscopy(cryo-EM) ZIF-8 image deconvolution crystal structure determination