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Photocatalytic Oxidation Kinetics of Thiophene with Nano-F^-/Fe^(3+)/TiO_2

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China Petroleum Processing & Petrochemical Technology 2009年第4期11卷 48-52页

作者： li fatang~1 sun zhimin~1 liu Ying~1 Zhao Dishun~2 liu ruihong~1 (1.College of Science,Hebei University of Science and Technology,Shijiazhuang 050018 2.College of Chemical and Pharmaceutical Engineering,Hebei University of Science and Technology) Hebei Univ Sci & Technol Coll Sci Shijiazhuang 050018 Peoples R China Hebei Univ Sci & Technol Coll Chem & Pharmaceut Engn Shijiazhuang 050018 Peoples R China

Photocatalytic oxidation kinetics of thiophene in n-octane/water extraction system was studied with fluorine and ferric ion codoped nano-TiO_2(nano-F^-/Fe^(3+)/TiO_2) powders used as the *** of initial concentration of thiophene and additional dosage of F^-/Fe^(3+)/TiO_2 on the reaction rate constant and half-life were *** results showed that the appropriately added dosage of F^-/Fe^(3+)/TiO_2 was 0.1 g in the 100-mL reaction system and the photooxidative kinetics of thiophene in the presence of F^-/Fe^(3+)/TiO_2 catalyst was of first-order with a rate constant of 0.6508 h^(-1) and a half-life of 1.0651 *** desulfurization rate of thiophene was 98.1%in 5 h and the sulfur content could be reduced from 800 ppm to 15 *** reaction rate constant increased with a decreasing initial concentration of thiophene.

关键词： desulfurization thiophene nano-F^-/Fe^(3+)/TiO_2 photocatalytic oxidation kinetics

Greenhouse gas emissions from Daihai Lake,China:Should eutrophication and salinity promote carbon emission dynamics?

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Journal of Environmental Sciences 2024年第1期135卷 407-423页

作者： Xiangwei li ruihong Yu Jun Wang Heyang sun Xinyu liu Xiaohui Ren Shuai Zhuang Zhiwei Guo Xixi Lu Inner Mongolia Key Laboratory of River and Lake Ecology School of Ecology and EnvironmentInner Mongolia UniversityHohhot 010070China Key Laboratory of Mongolian Plateau Ecology and Resource Utilization Ministry of EducationHohhot 010070China Autonomous Region Collaborative Innovation Center for Integrated Management of Water Resources and Water Environment in the Inner Mongolia Reaches of the Yellow River Hohhot 010018China Department of Geography National University of Singapore117570Singapore

Greenhouse gases(GHGs)emitted or absorbed by lakes are an important component of the global carbon ***,few studies have focused on the GHG dynamics of eutrophic saline lakes,thus preventing a comprehensive understanding of the carbon ***,we conducted four sampling analyses using a floating chamber in Daihai Lake,a eutrophication saline lake in Inner Mongolia Autonomous Region,China,to explore its carbon dioxide(CO_(2))and methane(CH_(4))*** mean CO_(2)emission flux(FCO_(2))and CH_(4)emission flux(FCH_(4))were 17.54±14.54 mmol/m^(2)/day and 0.50±0.50 mmol/m^(2)/day,*** results indicated that Daihai Lake was a source of CO_(2)and CH_(4),and GHG emissions exhibited temporal *** mean CO_(2)partial pressure(p CO_(2))and CH_(4)partial pressure(p CH_(4))were 561.35±109.59μatm and 17.02±13.45μatm,which were supersaturated relative to the *** regression and correlation analysis showed that the main influencing factors of p CO_(2)were wind speed,dissolved oxygen(DO),total nitrogen(TN)and Chlorophyll a(Chl.a),whereas the main influencing factors of p CH_(4)were water temperature(WT),Chl.a,nitrate nitrogen(NO_(3)^(-)-N),TN,dissolved organic carbon(DOC)and water *** regulated carbon mineralization and organic matter decomposition,and it was an important influencing factor of p CO_(2)and p CH_(4).Additionally,the trophic level index(Tli)significantly increased p CH_(4).Our study elucidated that salinity and eutrophication play an important role in the dynamic changes of GHG ***,research on eutrophic saline lakes needs to be strengthened.

关键词： Eutrophication Salinity Greenhouse gas emissions Inland lake Inner Mongolia Autonomous Region

Role of maturity status on the quality and volatile properties of mango fruits dried by infrared radiation

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Food Bioscience 2023年第2期52卷 1240-1248页

作者： Dantong li Taotao Dai Mingshun Chen ruihong liang Wei liu Chengmei liu Jian sun Jun Chen lizhen Deng State Key Laboratory of Food Science and Technology Nanchang UniversityNanchang330047China Guangxi Key laboratory of Fruits and Vegetables Storage-Processing Technology Nanning530007China

Drying characteristics and quality attributes are greatly dependent on the maturity status of fresh ***,this work investigated the changes in quality and volatile properties of mangoes at ripening stages(from the lowest to highest degree-RS-1,RS-2,RS-3,RS-4)during infrared *** showed that the total soluble solids/titratable acid,texture,nutrient composition(phenolic,vitamin C,β-carotenoid),and volatile compounds during drying were varied during ***,fruits at RS-3 obtained the highest increase in total phenolic(8.72 mg/g),the most dramatic decrease in vitamin C(5.58 mg/g),and the lowest decrease inβ-carotenoid contents(56.49 mg/100 g)during *** drying,the lower L*values,the higher a*and b*values were obtained for products with higher ***,the color changed from light yellow to dark *** aroma intensity reduced after drying,and the aroma changed from tangerine and citrus to fruity,orange peel,and *** to the comprehensive quality evaluation model,the highest evaluation score at RS-3,which was 3.58%-42.90%higher than those of other stages.

关键词： Ripening stage Mangoes Quality Multivariate data analysis Volatile aroma Evaluation model

Geographically driven shifts in land use influence phytoplankton community patterns in the Inner Mongolian Plateau lakes

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Journal of Plant Ecology 2024年第5期17卷 157-175页

作者： Yue Geng Xue Lei ruihong Yu Xiangwei li Heyang sun Xingyu liu Yuan li Xiangyu Zhang Zhuangzhuang Zhang Jifei Xu Changwei Lü lixin Wang Jianfeng Wang Inner Mongolia Key Laboratory of River and Lake Ecology School of Ecology and EnvironmentInner Mongolia UniversityHohhot 010021China Key Laboratory of Mongolian Plateau Ecology and Resource Utilization Ministry of EducationHohhot 010021China Autonomous Region Collaborative Innovation Center for Integrated Management of Water Resources and Water Environment in the Inner Mongolia Reaches of the Yellow River Hohhot 010018China Inner Mongolia Hetao Irrigation District Water Conservancy Development Center Urat Branch Center Nine Drainage Ditch DrainageBayannur 015000China

Phytoplankton play an irreplaceable role as producers in maintaining lake ***,scant attention has been given to investigating the dispersion of phytoplankton communities and the factors influencing them across expansive *** this study,we present the results of a survey on the distribution of phytoplankton community and the effects of different driving factors in 11 lakes along Inner Mongolia in July–August ***-metric multidimensional scaling analysis and variance decomposition(VPA)were used to elucidate the distribution of phytoplankton communities and the response of drivers.A total of 169 species of phytoplankton from 8 phyla were *** the abundance and diversity of phytoplankton in the Inner Mongolia lakes showed a trend of high in the east and low in the west(with Daihai Lake as the boundary).The Margalef index of phytoplankton significantly negatively correlated with salinity(r=−0.707,Plids(r=−0.720,Plids,Chlorophyll a and trophic level *** VPA explained 38.9%of the changes in the phytoplankton community with the highest rate of explanation of land ***,preventing anthropogenic impacts,as well as reducing nutrient loads,can effectively ensure the ecological diversity of lake phytoplankton in lake populations with large geographical spans and varying levels of nutrients.

关键词： phytoplankton driving factor water quality land use community distribution Inner Mongolian Plateau

Spatial changes and driving factors of lake water quality in Inner Mongolia, China

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Journal of Arid Land 2023年第2期15卷 164-179页

作者： REN Xiaohui YU ruihong liu Xinyu sun Heyang GENG Yue QI Zhen ZHANG Zhuangzhuang li Xiangwei WANG Jun ZHU Penghang GUO Zhiwei WANG lixin XU Jifei Inner Mongolia Key Laboratory of River and Lake Ecology School of Ecology and EnvironmentInner Mongolia UniversityHohhot 010021China Key Laboratory of Mongolian Plateau Ecology and Resource Utilization Ministry of EducationHohhot 010021China

Lakes play important roles in sustaining the ecosystem and economic development in Inner Mongolia Autonomous Region of China,but the spatial patterns and driving mechanisms of water quality in lakes so far remain *** study aimed to identify the spatial changes in water quality and the driving factors of seven lakes(Juyanhai Lake,Ulansuhai Lake,Hongjiannao Lake,Daihai Lake,Chagannaoer Lake,Hulun Lake,and Wulannuoer Lake)across the longitudinal axis(from the west to the east)of Inner ***-scale research was conducted using the comprehensive trophic level index(Tli(Σ)),multivariate statistics,and spatial analysis *** results showed that most lakes in Inner Mongolia were weakly *** dissolved solids and salinity of lake water showed obvious zonation *** and phosphorus were identified as the main pollutants in lakes,with high average concentrations of total nitrogen and total phosphorus being of 4.05 and 0.21 mg/L,*** values of Tli(Σ)ranged from 49.14 to 71.77,indicating varying degrees of lake eutrophication,and phosphorus was the main driver of lake *** lakes of Inner Mongolia could be categorized into lakes to the west of Daihai Lake and lakes to the east of Daihai Lake in terms of salinity and Tli(Σ).The salinity levels of lakes to the west of Daihai Lake exceeded those of lakes to the east of Daihai Lake,whereas the opposite trend was observed for lake trophic *** intensity and mode of anthropogenic activities were the driving factors of the spatial patterns of lake water *** is recommended to control the impact of anthropogenic activities on the water quality of lakes in Inner Mongolia to improve lake ecological *** findings provide a more thorough understanding of the driving mechanism of the spatial patterns of water quality in lakes of Inner Mongolia,which can be used to develop strategies for lake ecosystem protection and water resources management i

关键词： salinity lake eutrophication lake water quality comprehensive trophic level index anthropogenic activities Daihai Lake Inner Mongolia

纳米ZnFe_2O_4快速燃烧合成及其光催化活性综合实验设计

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实验技术与管理 2016年第5期33卷 28-31页

作者：李发堂李义磊刘瑞红河北科技大学理学院河北石家庄050021

以溶液燃烧法快速合成了纳米ZnFe_2O_4光催化剂,以X射线衍射、透射电镜、紫外可见漫反射吸收等对其进行了分析和表征,以罗丹明B的降解评价了其催化活性,考察了燃料量对催化剂粒径及光催化活性的影响。结果表明,以盐酸三乙胺为燃料、在... 详细信息

以溶液燃烧法快速合成了纳米ZnFe_2O_4光催化剂,以X射线衍射、透射电镜、紫外可见漫反射吸收等对其进行了分析和表征,以罗丹明B的降解评价了其催化活性,考察了燃料量对催化剂粒径及光催化活性的影响。结果表明,以盐酸三乙胺为燃料、在微富燃条件下所得ZnFe_2O_4粒径为21.9nm,表现出良好的光催化活性,罗丹明B 120min降解率为61.3%。该实验操作简单,节能省时,涵盖纳米材料、光催化、燃烧合成、测试表征等多个知识点,有利于提高学生的实验兴趣,培养学生综合能力和素质,可以作为化学或材料、环境等相关专业的综合性实验项目。

关键词：纳米材料综合实验锌铁尖晶石溶液燃烧合成光催化

燃烧合成氧空位型BiOCl及其可见光催化活性综合实验设计

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实验技术与管理 2018年第5期35卷 68-71页

作者：刘瑞红李义磊李发堂河北科技大学理学院河北石家庄050021

通过构建还原气氛以离子液体自燃烧一步合成了具有表面氧空位的BiOCl光催化剂,以X射线衍射、透射电镜等仪器对其进行了分析和表征,以可见光下罗丹明B的降解评价其催化活性,考察了燃料用量对其催化活性的影响。结果表明,以二乙胺盐酸盐... 详细信息

通过构建还原气氛以离子液体自燃烧一步合成了具有表面氧空位的BiOCl光催化剂,以X射线衍射、透射电镜等仪器对其进行了分析和表征,以可见光下罗丹明B的降解评价其催化活性,考察了燃料用量对其催化活性的影响。结果表明,以二乙胺盐酸盐为燃料和反应物,可以合成具有氧空位的BiOCl,其禁带宽度由无氧空位的3.15eV降低到2.72eV,可见光下罗丹明B 10min即可基本实现完全脱色。该实验涵盖纳米材料、光催化、燃烧合成、离子液体及测试表征等多个知识点,有利于提高学生综合能力和素质。

关键词： BiOCl 综合实验燃烧合成表面氧空位光催化

Genomic evolution and insights into agronomic trait innovations of Sesamum species

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Plant Communications 2024年第1期5卷 262-283页

作者： Hongmei Miao Lei Wang lingbo Qu Hongyan liu Yamin sun Meiwang Le Qiang Wang Shuangling Wei Yongzhan Zheng Wenchao lin Yinghui Duan Hengchun Cao Songjin Xiong Xuede Wang libin Wei Chun li Qin Ma Ming Ju ruihong Zhao Guiting li Cong Mu Qiuzhen Tian Hongxian Mei Tide Zhang Tongmei Gao Haiyang Zhang Henan Sesame Research Center Henan Academy of Agricultural SciencesZhengzhou 450002China TEDA School of Biological Sciences and Biotechnology Nankai UniversityTianjin 300457China College of Food Science and Technology Henan Technology UniversityZhengzhou 450001China Institute of Plant Protection Research Henan Academy of Agricultural SciencesZhengzhou 450002China Crops Research Institute Jiangxi Academy of Agricultural SciencesNanchang 330200China Crop Research Institute Anhui Academy of Agricultural SciencesHefei 230031China

Sesame is an ancient oilseed crop with high oil content and ***,the evolutionary history and genetic mechanisms of its valuable agronomic traits remain ***,we report chromosome-scale genomes of cultivated sesame(Sesamum indicum L.)and six wild Sesamum species,representing all three karyotypes within this *** and genome-based phylogenic analysis revealed the evolutionary route of Sesamum species from n=13 to n=16 and revealed that allotetraploidization occurred in the wild species Sesamum *** divergence of the Sesamum genus(48.5–19.7 million years ago)during the Tertiary period and its ancient phylogenic position within eudicots were ***-genome analysis revealed 9164 core gene families in the *** families are significantly enriched in variousmetabolic pathways,including fatty acid(FA)metabolism and FA *** variations in SiPT1 and SiDT1 within the phosphatidyl ethanolamine-binding protein gene family lead to the genomic evolution of plant-architecture and inflorescence-development phenotypes in Sesamum.A genome-wide association study(GWAS)of an interspecific population and genome comparisons revealed a long terminal repeat insertion and a sequence deletion inDIR genes of wildSesamum angustifoliumand cultivated sesame,respectively;both variations independently cause high susceptibility toFusariumwilt disease.A GWAS of 560 sesame accessions combined with an overexpression study confirmed that the NAC1andPPOgenes play an important role in upregulating oil content of *** study provides high-quality genomic resources for cultivated and wild Sesamum species and insights that can improve molecular breeding strategies for sesame and other oilseed crops.

关键词： Sesamum genome evolution structural variation plant architecture Fusarium wilt disease oil content

胶东新城金矿床控矿构造变形环境：显微构造和EBSD组构约束

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岩石学报 2014年第9期30卷 2546-2558页

作者：李瑞红刘育李海林郑小礼赵海孙政中国地质大学地质过程与矿产资源国家重点实验室北京100083 山东黄金矿业股份有限公司莱州261400 山东黄金矿业莱州有限公司焦家金矿莱州261441

新城金矿床是典型的＂焦家式＂破碎带蚀变岩型金矿,矿体形态和规模都严格受到断裂破碎带控制,是探讨复杂构造-流体耦合成矿系统控矿构造变形环境研究的理想选区。断裂破碎带中构造岩既是构造变形行为的载体,也是相应变形环境的受体。论... 详细信息

新城金矿床是典型的＂焦家式＂破碎带蚀变岩型金矿,矿体形态和规模都严格受到断裂破碎带控制,是探讨复杂构造-流体耦合成矿系统控矿构造变形环境研究的理想选区。断裂破碎带中构造岩既是构造变形行为的载体,也是相应变形环境的受体。论文在新城金矿详细露头构造解析的基础上,系统采集该矿床控矿断裂破碎带定向构造岩样品,进行显微构造和EBSD组构分析。研究区构造岩显微构造特征主要表现为韧性变形和脆性变形。韧性变形有波状消光、带状消光、亚晶粒、动态重结晶、核幔构造、丝带构造、碎（残）斑系、扭折带、变形纹、机械双晶、蠕英结构、云母鱼等;脆性变形有书斜构造和显微裂隙等。长石（残）斑系、扭折带、变形纹、蠕英结构和石英颗粒边界迁移动态重结晶、丝带构造等矿物变形特征表明断裂带成矿前以高温韧性变形为主;石英波状消光、亚晶粒、亚颗粒旋转和膨凸动态重结晶、方解石机械双晶、长石显微裂隙充填物等矿物变形反映成矿期兼有中低温韧性变形和脆性变形;压剪性穿晶裂隙则反映出成矿后主要是低温脆性变形。根据差应力、应变测量和EBSD组构分析,将新城金矿床控矿构造变形环境可以分为3个构造期：成矿前在NW-SE向挤压作用下发生韧-脆性左行剪切变形,600~700℃,差应力61.37~111.09MPa,应变测量轴比a/c为2.295~3.978,动态重结晶石英颗粒边界分维值为1.466~1.599,反映矿区为高温中高压高应变带变形环境,应变速率较大;成矿期为NW-SE向逐渐NEE-SWW向转变的挤压作用,发生压剪性脆性变形,200~500℃,差应力65.91~135.68MPa,应变测量轴比a/c为1.403~2.204,动态重结晶石英颗粒边界分维值为1.321~1.378,反映矿区成矿期为中低温中高压低应变带变形环境,反应速率较小;成矿后在NWW-SEE向挤压作用下发生压剪变形,150~300℃,反映低温低压脆性变形环境。

关键词：显微构造 EBSD组构变形环境新城金矿床胶东