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Adsorption of 17β-estradiol from aqueous solution by raw and direct/pre/post-KOH treated lotus seedpod biochar

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Journal of Environmental Sciences 2020年第1期32卷 10-23页

作者： Ni liu yunguo liu Guangming Zeng Jilai Gong Xiaofei Tan Jun Wen Shaobo liu Luhua Jiang Meifang li Zhihong Yin College of Environmental Science and Engineering Hunan UniversityChangsha 410082P.R.China Key Laboratory of Environmental Biology and Pollution Control Hunan UniversityMinistry of EducationChangsha 410082China College of Agriculture Guangxi UniversityNanning 530005China School of Architecture and Art Central South UniversityChangsha 410082China School of Metallurgy and Environment Central South UniversityChangsha 410083China

Five biochars derived from lotus seedpod(LSP)were applied to examine and compare the adsorption capacity of 17β-estradiol(E2)from aqueous *** effect of KOH activation and the order of activation steps on material properties were *** effect of contact time,initial concentration,p H,ionic strength and humic acid on E2 adsorption were investigated in a batch adsorption *** results demonstrated that the pseudo second-order model fitted the experimental data best and that adsorption equilibrium was reached within 20 *** efficiency of E2 removal increased with increasing E2 concentration and decreased with the increase of ionic strength.E2 adsorption on LSP-derived biochar(BCs)was influenced little by humic acid,and slightly affected by the solution p H when its value ranged from 4.0 to 9.0,but considerably affected at p H *** environmental temperature is favorable for E2 ***,π–πinteractions,monolayer adsorption and electrostatic interaction are the possible adsorption *** studies indicated that KOH activation and the order of activation steps had significant impacts on the ***-treated biochar exhibited better adsorption capacity for E2 than direct treated,pretreated,and raw LSP *** biochar at higher temperature improved E2 *** excellent performance of BCs in removing E2 suggested that BCs have potential in E2 treatment and that the biochar directly treated by KOH would be a good choice for the treatment of E2 in aqueous solution,with its advantages of good efficiency and simple technology.

关键词： 17β-estradiol Lotus seedpod derived biochar Activation order Pre-or post-treatment Adsorption

Growth inhibition and oxidative damage of Microcystis aeruginosa induced by crude extract of Sagittaria trifolia tubers

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Journal of Environmental Sciences 2016年第5期28卷 40-47页

作者： Jiang li yunguo liu Pingyang Zhang Guangming Zeng Xiaoxi Cai Shaobo liu Yicheng Yin Xinjiang Hu Xi Hu Xiaofei Tan College of Environmental Science and Engineering Hunan University Changsha 410082 China. Key Laboratory of Environmental Biology and Pollution Control (Hunan University) Ministry of Education Changsha 410082 China School of Architecture and Art Central South University Changsha 410082 China School of Metallurgy and Environment Central South University Changsha 410083 China College of Environmental Science and Engineering Research Central South University of Forestry and Technology Changsha 410004 China Hunan East Dongting Lake National Nature Reserve Administration Yueyang 414000 China

Aquatic macrophytes are considered to be promising in controlling harmful cyanobacterial blooms. In this research, an aqueous extract of Sagittaria trifolia tubers was prepared to study its inhibitory effect on Microcystis aeruginosa in the laboratory. Several physiological indices of M. aeruginosa, in response to the environmental stress, were analyzed. Results showed that S. trifolia tuber aqueous extract significantly inhibited the growth of M. aeruginosa in a concentration-dependent way. The highest inhibition rate reached 90% after 6 day treatment. The Chlorophyll-a concentration of M. aeruginosa cells decreased from 343.1 to314.2 μg/L in the treatment group. The activities of superoxide dismutase and peroxidase and the content of reduced glutathione in M. aeruginosa cells initially increased as a response to the oxidative stress posed by S. trifolia tuber aqueous extract, but then decreased as time prolonged. The lipid peroxidation damage of the cyanobacterial cell membranes was reflected by the malondialdehyde level, which was notably higher in the treatment group compared with the controls. It was concluded that the oxidative damage of M. aeruginosa induced by *** tuber aqueous extract might be one of the mechanisms for the inhibitory effects.

关键词： Microcystis aeruginosa Sagittaria trifolia Cyanobacterial inhibition Oxidative damage Antioxidant response

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不同成熟期昭通苹果生产成本与收益对比分析

果树资源学报 2024年第2期5卷 64-66,73页

作者：胡志芳陈悦张秀英全勇李云国李超王顺富武孔敏杜楠龚占斌昭通市苹果产业发展中心云南昭通657000 昭通学院农学与生命科学学院云南昭通657000 昭通市农业科学院云南昭通657000

【目的】通过对昭通地区苹果种植户生产投入和产出水平的调查和生产成本收益分析,研究不同苹果品种苹果的生产成本和产出收益,从而帮助果农了解资源投入与产出的关系,优化资源的配置,为昭通苹果产业政策、产业规划、科技政策等提供理论... 详细信息

【目的】通过对昭通地区苹果种植户生产投入和产出水平的调查和生产成本收益分析,研究不同苹果品种苹果的生产成本和产出收益,从而帮助果农了解资源投入与产出的关系,优化资源的配置,为昭通苹果产业政策、产业规划、科技政策等提供理论依据。【方法】对昭通市苹果种植户早、中、晚3个成熟期不同品种的生产成本、产量、收益和纯收入等进行实地调查和数据分析。【结果】不同成熟期昭通苹果栽培品种的生产成本和产出之间均存在显著差异,早中熟品种‘昭锦’的每亩(667 m2)生产总成本(5 297.33元)和人工成本(5 297.33元)均最高;晚熟富士每亩(667 m2)的物资成本(527.31元)和每亩(667 m2)平均产量(2 800.69 kg)均最高;中熟品种2001富士每亩(667 m2)的平均收益和纯收入均最高,分别为10 317.63元和7 306.36元,但与晚熟富士之间不存在显著差异。【结论】对现阶段收集的数据进行了线性回归分析,结果显示,苹果产量与收益之间有一定的线性关系,但由于调查的年份和数据可能不足,该阶段建立的模型还有待优化,需要进一步大量采集不同年份不同样地的数据,才能更有效为生产决策提供参考,指导昭通苹果产业的发展。

关键词：昭通苹果成本收益

同方期刊数据库博看期刊评论

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瑞雪苹果在云南昭通的引种表现及栽培技术

中国果树 2024年第3期 105-108页

作者：张秀英程安富吴冬全勇李云国马勉娣马静李超杜楠鲁兴凯龚占斌昭通市苹果产业发展中心云南657000

从2020年开始,调查了瑞雪苹果在云南省昭通地区的引种表现和栽培技术要点,以期为瑞雪在昭通地区的推广提供技术支持。结果表明:瑞雪平均单果重246.4 g,果实圆柱形,果形指数0.91,果形端正,果面光洁;果肉甜脆多汁,风味浓郁,硬度8.30 kg/cm... 详细信息

从2020年开始,调查了瑞雪苹果在云南省昭通地区的引种表现和栽培技术要点,以期为瑞雪在昭通地区的推广提供技术支持。结果表明:瑞雪平均单果重246.4 g,果实圆柱形,果形指数0.91,果形端正,果面光洁;果肉甜脆多汁,风味浓郁,硬度8.30 kg/cm^(2),可溶性固形物含量16.09%,可滴定酸含量0.25%,具独特香气,品质佳,耐贮藏。结果早,易丰产,定植后第2年见果,定植后第5年平均株产达30.18kg,每667 m^(2)产量达3 380.2 kg。果实发育期188~193 d,抗旱能力较强,适应性较广,生产管理简单。

关键词：苹果瑞雪昭通地区引种表现栽培技术

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昭通苹果产业助推脱贫攻坚的经验及成效

云南农业大学学报（社会科学版） 2020年第6期14卷 36-41页

作者：王顺富张丹夏敏王成轶刘毅邓芳杨艳群郎平勇全勇李云国昭通市苹果产业发展中心云南昭通657000 昭通市昭阳区植保植检站云南昭通657000 昭通市绿健果蔬商贸有限公司云南昭通657000 昭通市农产品质量安全中心云南昭通657000

昭通是云南省深度贫困地区,农村是昭通地区打赢脱贫攻坚战的主战场,苹果产业是昭通农村发展的主产业之一。通过文献收集、查阅国家及地方关于产业扶贫政策文件、实地调查的方式,对昭通苹果产业助推脱贫攻坚进行了分析。结果表明:昭通得... 详细信息

昭通是云南省深度贫困地区,农村是昭通地区打赢脱贫攻坚战的主战场,苹果产业是昭通农村发展的主产业之一。通过文献收集、查阅国家及地方关于产业扶贫政策文件、实地调查的方式,对昭通苹果产业助推脱贫攻坚进行了分析。结果表明:昭通得天独厚的地理气候环境,造就了昭通苹果“肉质细腻、风味浓郁、色泽鲜艳”的品质优势。昭通苹果具有“早、甜、香、脆”特点,苹果产业助推了昭通30万人脱贫致富,已经变成果农增收致富的“金苹果”。本文阐述了昭通市委、市政府把昭通苹果发展成全国苹果的“塔尖”和打造为世界一流“绿色食品品牌”,助推脱贫攻坚的经验和做法,列举了苹果龙头企业、合作社、能人通过苹果带动辐射果农脱贫致富的典型案例,为西南冷凉高地苹果产区提供了可复制的发展模式和发展途径。

关键词：昭通苹果脱贫攻坚经验

Greenways and Their Functions to Eco-Cities

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Ecological Economy 2005年第4期1卷 6-12页

作者： liu yunguo Huang Zhe Guang ming li Xin Deparmnet of Environmental Science ＆ Engineering Hunan University Changsha 410082.PR.China

Greenways can be considered as linear open spaces along natural or artificial linear features such as rivers. shorelines, ridgelines, railroads, canals or roads. They are planned, designed, and managed to connect and protect ecological, scenic, recreational, historic, and cultural resources, The archetype of greenways could go back to the landscape axes and boulevards of Europe in the 18^th century and later tire parkways of USA in the late 19^th century . As a means of urban ecological planning, greenway planning is getting more and more important to sustainable development in urban areas and has become a worldwide activity or a movement. This paper reviews the evolution of greenways and identifies it into three distinct stages or “generations ”. introduces a general methodology of greenway planning, and expounds the functions of greenways to ecotitles. At the end. this paper emphasizes that it is significant to enhance the research and implementation of greenway planning in our country in the case that urbanization will be developing qulckly in the next decades.

关键词： greenways greenwayplanning eco-city greenway network

Genetic variability of half-smooth tongue sole Cynoglossus semilaevis populations using microsatellite markers

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Acta Oceanologica Sinica 2011年第3期30卷 76-83页

作者： liU yunguo GUO Yinghui liU Shuaishuai li Junfeng YE Naihao Inspection ＆ Quarantine Technology Center Shandong Entry-Exit Inspection ＆ Quarantine Bureau Qingdao 266002 China Ocean University of China Qingdao 266003 China College of Basic Medical Sciences Shandong University of Traditional Chinese Medicine Jinan 250355 China Yellow Sea Fisheries Research Institute Chinese Academy of Fishery Sciences Qingdao 266071 China College of Chemical Engineering Qingdao University of Science ＆ Technology Qingdao 266042 China

Ten highly variable microsatellite loci were performed in order to evaluate the genetic variability of wild and hatchery samples of half-smooth tongue sole Cynoglossu＇s semilaevis. A group of 200 genotypes belonging to four wild samples, Laizhou （LZ）, Weihai （WH）, Qingdao （QD）, Rizhao （RZ） and one hatchery sample, Mingbo （MB）, were screened. All of the： ten microsatellite loci screened in this study showed marked polymorphism. A total of 70 different alleles were observed over all loci. The number of alleles per locus ranged from 4.2 to 1006 the average of expected and observed heterozygosity ranged from 0.67 to 0.82, and from 0：77 to0.87 respectively. A total of 10, 16, 10, 11 and 5 unique alleles each were found in LZ, WH~ QD：RZ and MB populations. The effective number of alleles varied from 2.87 for HSTS_7 to 6.83 for HSTS_h. The number of average genotypes ranged from 6.0 for HSTS a to 15.4 for HSTS_h： As compared with the wild populations, the hatchery population, MB, showed significant genetic changes such as fewer alleles per locus （P〈0.05）, a smaller number of low frequency alleles （P〈0.05）, a small number of unique alleles and a small number of genotypes （P〈0.05）, all indicative of a reduction in genetic diversity.

关键词： Cynoglossus semilaevis microsatellite marker population genetic variability

R290直膨式太阳能热泵系统工质分布和迁移特性模拟

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太阳能学报 2016年第10期37卷 2585-2592页

作者：孔祥强李俊枭杨允国李瑛山东科技大学机械电子工程学院青岛266590

为了研究工质R290（丙烷）在直膨式太阳能热泵系统中的分布和迁移特性，建立太阳能集热，蒸发器和冷凝器的分布参数均相流动模型、压缩机和电子膨胀阀的集中参数模型、以及系统工质充注量模型，编制以R290为工质的直膨式太阳能热泵热水... 详细信息

为了研究工质R290（丙烷）在直膨式太阳能热泵系统中的分布和迁移特性，建立太阳能集热，蒸发器和冷凝器的分布参数均相流动模型、压缩机和电子膨胀阀的集中参数模型、以及系统工质充注量模型，编制以R290为工质的直膨式太阳能热泵热水器系统性能模拟程序。模拟分析环境参数和运行参数的变化对系统内部R290分布和迁移特性的影响。模拟结果表明：R290主要存在于冷凝器和太阳能集热／蒸发器内部，占系统工质充注量的80％～90％；随着太阳辐射强度和环境温度的升高，工质R290由冷凝器逐渐向太阳能集热，蒸发器迁移，系统性能系数明显增加；随着压缩机转速增快和水箱水温的增高，工质R290由太阳能集热，蒸发器逐渐向冷凝器迁移，系统性能系数明显降低；随着系统工质充注量的增加，冷凝器内工质R290质量明显增加，集热器内工质R290质量略有增加，系统性能系数先增后减，存在一个最大值；太阳能集热，蒸发器出口过热度由3℃升至8℃时，其变化对工质R290的分布和迁移特性影响很小，且对系统性能系数的影响也很小；随着环境温度、压缩机转速和工质充注量的增加，集热器集热效率不断增加；而随着太阳辐射强度、水箱水温和太阳能集热，蒸发器出口过热度的增高，集热器集热效率不断降低。

关键词：工质太阳能直膨式热泵 R290 数值模拟

The multi-stage rupture characteristics of 2015 Mw 7.2 Tajikistan earthquake in Pamir interior

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The multi-stage rupture characteristics of 2015 Mw 7.2 Tajik...