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Ce-based catalysts used in advanced oxidation processes for organic wastewater treatment: A review

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Journal of Environmental Sciences 2020年第10期32卷 109-116页

作者： lijun niu Ting Wei Qiangang Li Guangming Zhang Guang Xian Zeqing Long Zhijun Ren School of Energy and Enuironmental Engineering Hebei University of TechnologyTianjin 300130China School of Enuironment and Natural Resource Renmin University of ChinaBeijing 100872China

Refractory organic pollutants in water threaten human health and environmental safety,and advanced oxidation processes (AOPs) are effective for the degradation of these pollutants.Catalysts play vital role in AOPs,and Ce-based catalysts have exhibited excellent performance.Recently,the development and application of Ce-based catalysts in various AOPs have been reported.Our study conducts the first review in this rapid growing field.This paper clarifies the variety and properties of Ce-based catalysts.Their applications in different AOP systems (catalytic ozonation,photodegradation,Fenton-like reactions,sulfate radicalbased AOPs,and catalytic sonochemistry) are discussed.Different Ce-based catalysts suit different reaction systems and produce different active radicals.Finally,future research directions of Ce-based catalysts in AOP systems are suggested.

关键词： Ce-based catalysts Water treatment Redox properties Oxygen vacancies Advanced oxidation processes

人类命运共同体视域下体育非物质文化遗产国际交流评估研究

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南京体育学院学报 2024年第3期23卷 70-80页

作者：拓万亮牛力军桂林旅游学院广西桂林541000 通渭县通和小学甘肃通渭743300

在人类命运共同体视域下,开展体育非物质文化遗产的国际交流。从4个层面构建国际交流的评估框架:一是在国家政策保障层面,这对全面促进体育行业的继承和发展起到推动作用;二是在交流元素层面,从交流主体、交流内容和交流渠道中推广体育... 详细信息

在人类命运共同体视域下,开展体育非物质文化遗产的国际交流。从4个层面构建国际交流的评估框架:一是在国家政策保障层面,这对全面促进体育行业的继承和发展起到推动作用;二是在交流元素层面,从交流主体、交流内容和交流渠道中推广体育非物质文化遗产的活态传播;三是在交流效能层面,提升国内外体育非物质文化遗产的高效能交流机制;四是数据创建层面,创建体育非遗网络空间,共同维护体育非遗数据库建设,促进局域体育非物质文化遗产成果的交流。运用实地考察法、实地调研法、粗糙集理论法等研究方法,以全国21个典型城市和越南体育非物质文化遗产交流为样本进行全面分析,挖掘出体育非遗国际交流评估的重要影响指标,并计算出体育非遗国际交流效能的综合评价指数,从而引起国家对体育非遗交流评估的重视。

关键词：人类命运共同体体育非物质文化遗产国际交流评估

元宇宙技术助力甘肃体育非物质文化遗产对外传播研究

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江西科学 2024年第1期42卷 206-212页

作者：牛力军拓万亮定西市通渭县通和小学甘肃通渭743300 桂林旅游学院广西桂林541000

基于元宇宙时代的辐射面广、传播速度快、影响深远、互动黏性高等特点,探究元宇宙技术提升甘肃体育非物质文化遗产传播的价值、存在问题和传播机遇。以甘肃区域体育非物质文化遗产的对外传播为例,分析元宇宙技术对甘肃体育非物质文化遗... 详细信息

基于元宇宙时代的辐射面广、传播速度快、影响深远、互动黏性高等特点,探究元宇宙技术提升甘肃体育非物质文化遗产传播的价值、存在问题和传播机遇。以甘肃区域体育非物质文化遗产的对外传播为例,分析元宇宙技术对甘肃体育非物质文化遗产对外传播策略的探索。元宇宙技术通过尊重不同地区非物质文化遗产的多样性、价值多元性,打破了跨文化传播的阻碍,消除了甘肃区域非物质文化遗产向外传播的时空壁垒。元宇宙技术为甘肃体育非物质文化遗产对外传播提供了新空间、提升了受众注意力、消除了审美疲劳;汇集各方力量,提出构建虚拟场馆、开展虚拟运动与虚拟比赛、开展传播数据的分析与优化等策略,进一步提升甘肃区域体育国际形象。

关键词：元宇宙体育非物质文化遗产传播力对外传播传播策略虚拟现实

pH-sensitive KHA/CMC-Fe^(3+)@CS hydrogel loading and the drug release properties of riboflavin

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Particuology 2024年第3期86卷 13-23页

作者： Jie Song Xi Li Yuhua niu lijun Chen Zhiqiang Wei Yidan Li Youqian Wang Shaanxi University of Science&Technology Xi'an710021China

To improve drug utilization,reduce the drug administration frequency,increase the release time,and reduce the drug side effects in the human body,we prepared(KHA/CMC-Fe^(3+))@CS hydrogel spheres using green and natural potassium humate(KHA),carboxymethyl cellulose(CMC),and chitosan(CS)as raw materials and Fe3+as a crosslinking agent,and loaded them with riboflavin for drug sustainedrelease study using the drop ball method.The tests with FTIR,SEM,TG,and X-ray diffractometer showed that the coordination among KHA,CMC,and Fe^(3+)formed a three-dimensional network structure,where cs was encapsulated on the surface of the hydrogel spheres via noncovalent bonding,resulting in good thermal stability.The stability,drug loading,swelling,and in vitro release of the(KHA/CMC-Fe^(3+))@CS hydrogel spheres were investigated.The results showed that the hydrogel spheres were significantly pH-sensitive,with 11.16 g/g higher swelling in an alkaline environment(pH=7.4)than that in an acidic environment(pH=1.2).The swelling and drug release process of the hydrogel spheres were analyzed using mathematical models,concluding that the hydrogel swelling follows Schott second-order swelling kinetics,and the drug release mechanism was Fickian delivery mode.

关键词： Potassium humate Hydrogel spheres pH-sensitive Drugsustained-release Drug release model

Effects of Nitrogen Deposition on Tundra Vegetation Undergoing Invasion by Deyeuxia angustifolia in Changbai Mountains

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Chinese Geographical Science 2016年第1期26卷 99-108页

作者： JIN Yinghua XU Jiawei WANG Yeqiao WANG Shaoxian CHEN Zhaoshuang HUANG Xiangtong niu lijun School of Geographical Science Northeast Normal UniversityChangehun 130024China University of Rhode Island Kingston 02881United States Jilin Changbai Mountain Academy of Sciences Antu 133613China

In recent years, herbaceous species such as Deyeuxia angustifolia(Kom.) Y. L. Chang has invaded alpine tundra regions of the western slope of the Changbai Mountains. Because atmospheric nitrogen deposition is predicted to increase under a warming climate and D. angustifolia is sensitive to nitrogen addition, field experiments were conducted from 2010 to 2013 to determine the effect of increased nitrogen deposition on the mechanisms of D. angustifolia invasion. The goal of this study is to evaluate the impact of increased nitrogen deposition on the changes in alpine tundra vegetation(consisting mostly of Rhododendron chrysanthum Pall. and Vaccinium uliginosum Linn.). The results showed that: 1) simulated nitrogen deposition affected overall characteristics and structure of R. chrysanthum and V. uliginosum communities and had a positive impact on the growth of tundra vegetation invaded by D. angustifolia; 2) R. chrysanthum was more resistant to invasion by D. angustifolia than V. uliginosum; 3) simulated nitrogen deposition could improve the growth and enhance the competitiveness of D. angustifolia, which was gradually replacing R. chrysanthum and V. uliginosum and might become the dominant species in the system in future, transforming alpine tundra into alpine meadow in the Changbai Mountains.

关键词：高山苔原入侵机制植被变化氮沉降长白山小叶章草本植物气候变暖

Land Use Effects on Soil Organic Carbon, Microbial Biomass and Microbial Activity in Changbai Mountains of Northeast China

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Chinese Geographical Science 2014年第3期24卷 297-306页

作者： FANG Xiangmin WANG Qingli ZHOU Wangming ZHAO Wei WEI Yawei niu lijun DAI Limin State Key Laboratory of Forest and Soil Ecology Institute of Applied EcologyChinese Academy of Sciences University of Chinese Academy of Sciences Changbai Mountains Academy of Sciences

Land use changes are known to alter soil organic carbon(SOC) and microbial properties, however, information about how conversion of natural forest to agricultural land use as well as plantations affects SOC and microbial properties in the Changbai Mountains of Northeast China is meager. Soil carbon content, microbial biomass carbon(MBC), basal respiration and soil carbon mineralization were studied in five selected types of land use: natural old-growth broad-leaved Korean pine mixed forest(NF); spruce plantation(SP) established following clear-cutting of NF; cropland(CL); ginseng farmland(GF) previously under NF; and a five-year Mongolian oak young forest(YF) reforested on an abandoned GF, in the Changbai Mountains of Northeast China in 2011. Results showed that SOC content was significantly lower in SP, CL, GF, and YF than in NF. MBC ranged from 304.4 mg/kg in CL to 1350.3 mg/kg in NF, which was significantly higher in the soil of NF than any soil of the other four land use types. The SOC and MBC contents were higher in SP soil than in CL, GF, and YF soils, yielding a significant difference between SP and CL. The value of basal respiration was also higher in NF than in SP, CL, GF, and YF. Simultaneously, higher values of the metabolic quotient were detected in CL, GF, and YF soils, indicating low substrate utilization of the soil microbial community compared with that in NF and SP soil. The values of cumulative mineralized carbon and potentially mineralized carbon(C0) in NF were significantly higher than those in CL and GF, while no significant difference was observed between NF and SP. In addition, YF had higher values of C0 and C mineralization rate compared with GF. The results indicate that conversion from NF into agricultural land(CL and GF) uses and plantation may lead to a reduction in soil nutrients(SOC and MBC) and substrate utilization efficiency of the microbial community. By contrast, soils below SP were more conducive to the preservation of soil organic matter, which was reflected in the comparison

关键词：土壤有机碳土地利用变化微生物量碳长白山东北中国土地利用类型微生物特性

Statement on Establishment of Public Health Protection Guideline for Cold Spells—China

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China CDC weekly 2024年第5期6卷 92-94页

作者： Tiantian Li Qinghua Sun Chen Chen Qing Wang Jie Ban Runmei Ma Yi Zhang lijun Pan Yuanyuan Liu Qiutong Li Leyao Chang Hanshuo Zhang Yirong Liu Miaoyou niu Xiangxiang Wei Lin Wang China CDC Key Laboratory of Environment and Population Health National Institute of Environmental HealthChinese Center for Disease Control and PreventionBeijingChina

Cold spells are extreme weather events characterized by the invasion of cold air from high latitudes into the middle and low latitudes,resulting in significant cooling.Cold spells have various adverse health effects,including epidermal damage,respiratory tract spasms,respiratory immune abnormalities,acute cardiopulmonary diseases,and exacerbation of urinary and endocrine disorders.In response to the frequent cold spells in recent years.

关键词： respiratory invasion acute

Effects of Logging Intensity on Structure and Composition of a Broadleaf-Korean Pine Mixed Forest on Changbai Mountains,Northeast China

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Chinese Geographical Science 2016年第1期26卷 59-67页

作者： WU Zhijun SU Dongkai niu lijun Bernard Joseph LEWIS YU Dapao ZHOU Li ZHOU Wangming WU Shengnan DAI Limin State Key Laboratory of Forest and Soil Ecology Institute of Applied EcologyChinese Academy of SciencesShenyang 110016China Liaoning Technical University Fuxin 123000China University of Chinese Academy of Sciences Beijing 100049China Jilin Forest Industry Group Limited Liability Company Changchun 130021China Changbai Mountains Academy of Sciences Antu 133613China

In order to identify a harvesting model which is beneficial for broadleaf-Korean pine mixed forest(BKF) sustainability, we investigated four types of harvested stands which have been logged with intensities of 0(T0, control), 15%(T1, low intensity), 35%(T2, moderate intensity), and 100%(T3, clear-cutting), and examined the impacts of logging intensity on composition and structure of these stands. Results showed that there were no significant differences between T0 and T1 for all structural characteristics, except for density of seeding and large trees. The mean diameter at breast height(DBH, 1.3 m above the ground), stem density and basal area of large trees in T2 were significantly lower than in T0, while the density of seedlings and saplings were significantly higher in T2 than in T0. Structural characteristics in T3 were entirely different from T0. Dominant tree species in primary BKF comprised 93%, 85%, 45% and 10% of the total basal area in T0, T1, T2 and T3, respectively. Three community similarity indices, the Jaccard′s similarity coefficient(CJ); the Morisita-Horn index(CMH); and the Bray-Curtis index(CN), were the highest for T0 and T1, followed by T0 and T2, and T0 and T3, in generally. These results suggest that effects of harvesting on forest composition and structure are related to logging intensities. Low intensity harvesting is conductive to preserving forest structure and composition, allowing it to recover in a short time period. The regime characterized by low logging intensity and short rotations appears to be a sustainable harvesting method for BKF on the Changbai Mountains.

关键词：采伐强度结构特征混交林长白山组成阔叶朝鲜松树

基于Revit二次开发的水利工程BIM正向设计研究

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人民黄河 2022年第3期44卷 155-159页

作者：牛立军梁燕迪王程华北水利水电大学水利学院河南郑州450046 河南黄河河务局信息中心河南郑州450004

为弥补传统二维设计方法出图算量复杂、方案比选困难的缺陷,提升Revit对水利工程设计行业的适应性,通过正向设计需求分析,利用Revit API和MVC编程模式,以相关设计规范为依据,对Revit二次开发,形成了一套完整的水利工程BIM正向设计实现... 详细信息

为弥补传统二维设计方法出图算量复杂、方案比选困难的缺陷,提升Revit对水利工程设计行业的适应性,通过正向设计需求分析,利用Revit API和MVC编程模式,以相关设计规范为依据,对Revit二次开发,形成了一套完整的水利工程BIM正向设计实现方法。以落地槽设计为例,应用该方法开发出一个针对落地槽BIM正向设计的程序,基于模型可以一键生成图纸、计算书、概预算等设计成果,验证了BIM正向设计实现方法的可行性和高效性,为BIM技术在水利工程正向设计中的应用提供参考。

关键词： BIM正向设计二次开发 Revit API MVC 参数化建模