检索结果-南通市图书馆

Multi-functional polyethersulfone nanofibrous membranes with ultra-high adsorption capacity and ultra-fast removal rates for dyes and bacteria

引用

Journal of Materials Science & Technology 2021年第19期78卷 131-143页

作者： Jianxu Bao Hang Li Yuanting Xu Shengqiu Chen Zhoujun Wang chunji jiang Huilin Li Zhiwei Wei Shudong Sun Weifeng Zhao Changsheng Zhao College of Polymer Science and Engineering State Key Laboratory of Polymer Materials EngineeringSichuan UniversityChengdu610065China College of Chemical Engineering Sichuan University.Chengdu610065.China College of Biomedical Engineering Sichuan UniversityChengdu610064China

The adsorption technology has been widely applied in water remediation for contamination removal of dyes and bacteria,by virtue of the advantages of adsorption technology including high efficiency,energy conservation and ease of *** removal of dyes and bacteria has been realized by some reported materials,but to achieve satisfactory adsorption amounts and rates remain an unmet goal for ***,a poly(methacrylatoethyl trimethyl ammonium chloride-co-methyl methacrylate)copolymer was synthesized,and then blended with polyethersulfone for the fabrication of nanofibrous membranes via electrospinning for the use of fast and massive removal of dyes and *** to the introduction of abundant quaternary ammonium groups,the maximum adsorption amount for methyl orange was up to 909.8 mg g^(-1).In addition,the modified nanofibrous membranes showed good recyclability,broad applications in severe environments,selective adsorption ability,and excellent dynamic removal ***,thanks to the abundant functional groups,the membranes showed fast adsorption ability for bacteria through electrostatic *** should be noted that the clearance ratio for Staphylococcus aureus or Escherichia coli by 6 min of static adsorption could reach 93%or 90%for ***,dynamic removal ratio via filtration with the nanofibrous membranes could reach 99.7%for Staphylococcus aureus or 98.7%for Escherichia coli in 90 ***,the proposed approach towards the quaternary ammonium modified polyethersulfone nanofibrous membranes creates a new route for ultra-high adsorption capacity and ultra-fast removal rates for dyes and bacteria in water remediation.

关键词： Electrospinning Dye Bacteria Water remediation Nanofibrous membrane

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Comprehensive evaluation of peanut nitrogen-efficient germplasm

Comprehensive evaluation of peanut nitrogen-efficient germpl...

引用

第二十届中国作物学会学术年会

作者： Ping Zhang Dongming Gang Yanliang Wang Pei Guo chunji jiang Haiqiu Yu College of Agronomy Shenyang Agricultural University

【Background】Nitrogen is essential for plant growth and development, increasing nitrogen input can improve crop yield to a certain extent, but the phenomenon of higher fertiliser use and lower efficiency has become increasingly prominent. A key measure for minimising the negative impact of resource utilisation in agriculture on the environment is to screen and cultivate high yielding and highly N-efficient varieties, whereby, there is an urgent need to improve crop N uptake and use efficiency. Peanut genotypes are known to differ for N efficiency. Determining the appropriate N application rate together with efficient water and fertiliser management can improve peanut N efficiency. However, most studies on peanuts have focused on their cultivation and physical and chemical properties, and few studies have been conducted on the responses of peanut germplasm resources to stress. By screening N-efficient core germplasm resources, establishing a comprehensive evaluation system for efficient N utilisation in peanut can give full play to the nitrogen fixation effect of peanuts and have certain heritability, improve N efficiency, improve the soil environment, and play an important role in N absorption and utilisation.【Materials and Methods】In this study, 127 peanut core collections were used as experimental materials, and their nitrogen efficiency was evaluated under hydroponic and field conditions respectively. At seedling stage, Ca(NO3)2 was used as nitrogen source and normal concentration(7.5 mM N) was used as control. Three low nitrogen concentrations N1(0.075 mM N), N2(0.15 mM N) and N3(0.75 mM N) were set for 28 days after continuous treatment to observe the leaf etiolation, determine the growth of seedlings and nitrogen uptake and utilization to evaluate the nitrogen efficiency. In the field, nitrogen efficiency, yield and yield-related traits were evaluated by using normal nitrogen fertilizer(90kg/ha) and no nitrogen fertilizer(0kg/ha) as nitrogen treatments.【Result

关键词：

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

The impact of drought stress throughout the entire growth period on the grain yield and quality of common peanut and high-oleic-acid peanut

The impact of drought stress throughout the entire growth pe...

引用

第二十届中国作物学会学术年会

作者：艾鑫 Shiyu Wang chunji jiang Jing Wang Shuli Zhao Xinhua Zhao 张鹤于海秋 College of Agronomy Shenyang Agricultural University

【Background】Peanut(Arachis hypogaea L.) is a crucial oil crop worldwide, water scarcity significantly limits its yield and quality. The primary peanut-producing regions in China are mainly located in arid and semi-arid areas, where 70% of the crops suffer from varying degrees of drought stress annually, leading to an average annual yield reduction of over 20%. Prolonged drought stress can also negatively impact the content of nutrients by restricting nutrient absorption and transportation within peanut plants. Therefore, comprehending the physiological mechanisms underlying how drought stress affects peanut grain yield and quality is critical for successful cultivation.【 Materials and Methods 】 Using 18 common peanut varieties and 18 high-oleic-acid peanut varieties as experimental materials, we controlled the field moisture throughout the entire growth period. Two water gradients were set: moderate drought stress(50±5% FC) and normal watering(65±5% FC). We conducted measurements on factors contributing to peanut yield, total oil content, total protein content and fatty acid composition of each component after harvest.【Result and Analysis】Compared to normal water supply, drought stress period led to a higher decrease in high-oleic-acid peanut yield. Under drought stress, the oil content of high-oleic-acid peanuts significantly increased, while the protein content decreased significantly. The protein content of common peanuts showed a significant increase. The contents of oleic acid and docosanic acid in high-oleic-acid peanut decreased significantly, while the content of linoleic acid increased. The content of oleic acid and linoleic acid did not show significant changes in common peanuts. Correlation analysis among 8 fatty acids and yield components revealed that oleic acid content had a negative correlation with hexadecanoic acid and linoleic acid and a positive correlation with oil content. In terms of yield composition, oleic acid was positively correlated with

关键词：

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Effect of Potassium Deficiency on Root Growth and Nutrient Uptake in Maize (Zea mays L.)

引用

Agricultural Sciences 2017年第11期8卷 1263-1277页

作者： Qi Du Xinhua Zhao chunji jiang Xiaoguang Wang Yi Han Jing Wang Haiqiu Yu College of Agronomy Shenyang Agricultural University Shenyang China

Potassium (K) is an essential nutrient on the growth and development for maize (Zea Mays L.). And the developed root morphology and root activity have great significance to nutrient absorption and play an important role in the growth and development of plants. To explore the response to K-deficiency on root growth and nutrient absorption of maize, two inbred lines, 90-21-3 (Tolerance to K deficiency) and D937 (Sensitive to K deficiency) were carried out to investigate the root morphology, root activity, nutrient uptake and related traits. The results showed that K-deficiency inhibited the root growth of 90-21-3 and D937, but increased the ratio of root to shoot (R/S). The total length, root surface area, the root diameter and root volume of root system of 90-21-3 and D937 were significantly decreased by K deficiency, especially the fine root (0 - 0.4 mm) in root length and root surface area. In addition, the K concentration of root in the two lines was significantly decreased, but root activity was significantly improved, which promoted the absorption of the root system to Na+. Compared with D937, 90-21-3 was able to distribute more carbohydrates from shoot to the root system under K deficiency, alleviating the inhibition of root growth. The fine root system was the main part for absorption nutrient. The length and surface area of 90-12-3 were no difference, and significantly decreased by 12.90% and 17.65% in D937 after 5 d of K deficiency. As well, the root activity of 90-21-3 was significantly increased when encountered to K deficiency, which promoted the accumulation of Na+ and Ca2+ and regulated the osmotic stress. Therefore, it could be a responding mechanism for tolerance crop by maintaining large root system, increasing root activity and adjusting nutrient absorption to adapt to K deficiency.

关键词： Maize K Deficiency Root Morphology Root Activity Nutrient Absorption

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Effects of Different Nitrogen Applications on Soil Physical, Chemical Properties and Yield in Maize (<i>Zea mays</i>L.)

引用

Agricultural Sciences 2014年第14期5卷 1440-1447页

作者： Heng Zhong Qiao Wang Xinhua Zhao Qi Du Yue Zhao Xiaoguang Wang chunji jiang Shuli Zhao Minjian Cao Haiqiu Yu Dawei Wang College of Agronomy Shenyang Agricultural University Shenyang China Corn Research Institute Liaoning Academy of Agriculture Science Shenyang China

Application of nitrogen (N) fertilizer is one of the most important approaches on improving maize grain yield. However, as is known to all, overuse N fertilizer not only leads to decline of N use efficiency and maize yield, but also leads to potential risk to environment pollution. This experiment was conducted to determine the effects of N fertilizer applications with nine different treatments on soil physical-chemical characters and maize grain yield using hybrid variety Zhengdan 958 in 2011 and 2012. Results indicated that the soil bulk densities of T2 (CK) and T1 were the lowest compared to other treatments in 2011 and 2012, respectively, whereas the soil bulk density of T5 in 2011 and T3 in 2012 were higher than other treatments. The soil porosity and field capacity of T5 in 2011 and T3 in 2012 were lower than other treatments, but those of CK in 2011 and T1 in 2012 were higher than other treatments. The pH values of T3 to T7 were lower than other treatments. These results indicated that the soil bulk densities were increased, whereas the soil porosity, field capacity and values pH were decreased by N application at different stages. N application could increase the N contents of leaf and stem, whereas less or excess N application should not significant improve maize yield. Although the soil organic matter and total N contents of T3 were the highest in both 2011 and 2012, the yield of T4 is the highest in both 2011 and 2012. The application amount, period and times of N fertilizer were important to maize yield.

关键词： Maize N Fertilizer Application Yield Soil Physical and Chemical Properties N Content

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

基于创新人才培养的农业院校课程组建设探索

引用

创新创业理论研究与实践 2022年第14期5卷 94-96页

作者：孟军韩杰王术敖雪蒋春姬刘遵奇沈阳农业大学农学院辽宁沈阳110866 沈阳农业大学动物科学与医学学院辽宁沈阳110866

随着我国卓越农林人才培养计划的出台,课程组建设是推动高等农业院校实现创新人才培养的积极探索。但在“重科研,轻教学”的大环境背景下,课程组建设存在管理制度不健全、组织水平参差不齐、课程组教师缺乏有效沟通互动、课程组长的选... 详细信息

随着我国卓越农林人才培养计划的出台,课程组建设是推动高等农业院校实现创新人才培养的积极探索。但在“重科研,轻教学”的大环境背景下,课程组建设存在管理制度不健全、组织水平参差不齐、课程组教师缺乏有效沟通互动、课程组长的选拔和工作开展难度较大等问题。该文从完善高校对教师的评聘和考核制度、完善课程组管理制度、构建创新人才培养的课程组教师的沟通协作途径、发挥课程组教师在实践创新中的指导作用等方面进行探讨,以期充分发挥课程组在创新人才培养中的作用。

关键词：高等农业院校课程组创新人才培养

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Differences in drought tolerance and physiological mechanism of peanut at seedling stage

Differences in drought tolerance and physiological mechanism...

引用

2019年中国作物学会学术年会

作者： Jingyao Ren Jing Wang chunji jiang He Zhang Xinhua Zhao Xiaoguang Wang Shuli Zhao Xibo Liu Chao Zhong Haiqiu Yu Shenyang Agricultural University

【Background】 Peanut is one of the most important oil crops in China, with a sown area of about 4.56 million hectares, and the total yield has ranked first in the country. However, most of them grow in arid or semi-arid areas, where water stress has a great impact on their quality and yield. Therefore, the research on drought resistance is of great significance to the production of peanut. 【Materials and methods】In this study, comprehensive membership function method was used to screen the different varieties of drought tolerance, and the physiological indexes such as protective enzyme activity, secondary metabolites and the relative expression of genes related to drought tolerance were compared and analyzed.【Results】1. A comprehensive evaluation system for drought tolerance of peanut at seedling stage was established. Seven indexes, such as proline content, relative water content, relative plant fresh weight, damage rate, water loss rate of isolated leaves, specific leaf weight and wilting index, were used as the evaluation criteria of drought tolerance. The average membership function values of NH5 and HY22 with strong drought tolerance were 0.884 and 0.833, respectively. The average membership functions of FH18 and NH16, which are sensitive to drought stress, were only 0.288 and 0.304. 2. Under drought stress, the morphological and physiological indexes was varied between different varieties. The activities of protective enzymes, osmotic regulators and secondary metabolites of drought-tolerant varieties NH5 and HY22 were higher than those of drought-sensitive varieties NH16 and FH18, and the root activity of drought-tolerant varieties was better than that of sensitive varieties under drought stress. The morphological characteristics of drought-tolerant varieties did not change significantly, dehydration was not obvious after stress, and both aboveground and underground parts remained in better state. Five genes related to drought tolerance, such as AhPAL1, AhNCED1

关键词： peanut seedling stage drought stress

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Physiological, lipidomic and transcriptomic evidence for the relationship between membrane lipid metabolism and cold tolerance in peanut

Physiological, lipidomic and transcriptomic evidence for the...

引用

2019年中国作物学会学术年会

作者：张鹤 chunji jiang Jiale Dong Xinhua Zhao Jing Wang Xiaoguang Wang Shuli Zhao Xibo Liu Chao Zhong Hua Jin Haiqiu Yu Peanut Research Institute College of Agronomy Shenyang Agricultural University College of Environment and Resources Dalian Minzu University

[Research Background] Peanut(Arachis hypogaea L.), one of the most important grain legumes as the source of edible oils and proteins, is cultivated in the semi-arid tropical and subtropical regions of the world. Low temperature is seriously limiting the growth, development, yield and quality of peanut in high altitude and severe cold region. Most temperate or hardy plants have evolved complex strategies to survive low temperature and could active a series of physiological, biochemical, molecular and metabolic responses under cold stress. However, the specific mechanism of cold tolerance in peanut remains unknown. Membrane system is the primary place to sense cold signals and the barrier to protect cell from cold injury and the regulation of membrane lipid metabolism is one of the major strategies plants to survive cold stress;[Materials and methods] In this study, two peanut cultivars with contrasting responses to cold stress(6℃) NH5(cold-tolerant cultivar) and FH18(cold-sensitive cultivar) were used as the experimental materials. The morphological parameters, physiological characteristics, lipidomic detection based on liquid chromatography-mass spectrometry(LC-MS) and transcriptomic analysis based on RNA-seq platform of peanut seedlings under cold stress were conducted to study the cold tolerance responses of peanut at physiological, biochemical and molecular biological levels, respectively. Finally, an integrated analysis of lipidomic and transcriptomic data was carried out to elucidate the relationship between membrane lipid metabolism and cold tolerance in peanut. [Results] Physiological evidences suggested that cold-tolerant peanut seedlings can maintain photosynthesis and adapt to cold stress by keeping the permeability, fluidity and integrity of membrane system. Lipidomes revealed that peanut seedlings can tolerate cold stress by membrane lipid metabolism and remodeling, which was specifically reflected in the conversion of monogalactosyldiacylglycerol to dig

关键词： Peanut cold tolerance lipidomic analysis transcriptomic profile membrane lipid metabolism

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

农艺与种业专业学位研究生融合培养模式创新与实践

引用

沈阳农业大学学报（社会科学版） 2023年第4期25卷 470-475页

作者：王婧蒋春姬赵新华钟超于海秋沈阳农业大学农学院辽宁沈阳110161

党和国家吹响了实施乡村振兴战略的号角,新时代高等农业院校必须面向新农村、新农业和新农民、回应高等农业教育和涉农产业发展的新需求,如何促进教育链、人才链与产业链、创新链有机衔接,有效服务乡村振兴战略,已成为高等农业教育创新... 详细信息

党和国家吹响了实施乡村振兴战略的号角,新时代高等农业院校必须面向新农村、新农业和新农民、回应高等农业教育和涉农产业发展的新需求,如何促进教育链、人才链与产业链、创新链有机衔接,有效服务乡村振兴战略,已成为高等农业教育创新改革的主题之一。目前高等农业院校农艺与种业领域专业学位研究生培养存在专业知识构建趋于学术理论化、实践教学内容和形式时代性不足、专业技能及职业素养与实际需要差距大和实践创新能力培养与行业产业需求脱节等主要问题,沈阳农业大学通过校政企融合模式实践创新试验,构建了校政企全程参与的实践创新能力培养策略,搭建了长效运行的校政企协同育人利益共同体,建立了校政企共担的专业学位研究生培养保障体系。在校政企融合模式专业硕士研究生实践创新能力培养获得了较好的教育成效,使得校政企融合人才培养理念获得广泛认可,实践创新模式辐射和示范作用显著,促进了人才链与产业链、创新链有机衔接。通过与当地政府农业职能部门协作育人,以“同心圆”模式带动辐射职能部门管理的新型农业经营主体加入专业学位生培养体系,以达到实践创新能力靶向培养目的,为高层次应用型人才培养提供了一种新思路。

关键词：农艺与种业校政企融合实践创新研究生培养模式沈阳农业大学

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

施钾量对花生根系和根瘤特性、养分吸收及产量的影响

引用

中国农业科学 2023年第4期56卷 635-648页

作者：刘娜谢畅黄海云姚瑞徐爽宋海玲于海秋赵新华王婧蒋春姬王晓光沈阳农业大学农学院

【目的】针对辽宁省花生产地速效钾含量偏低，钾肥施用量不足的现状，探究不同钾水平对花生根系、根瘤特性、主要养分吸收速率以及产量的影响，以期明确最佳的钾肥施用量，为当地的花生生产提供理论依据和参考。【方法】本试验于2018—2... 详细信息

【目的】针对辽宁省花生产地速效钾含量偏低，钾肥施用量不足的现状，探究不同钾水平对花生根系、根瘤特性、主要养分吸收速率以及产量的影响，以期明确最佳的钾肥施用量，为当地的花生生产提供理论依据和参考。【方法】本试验于2018—2019年在沈阳农业大学进行，以农花9号为试材，设0(CK)、112.5 kg·hm(-2)(T1)、225 kg·hm(-2)(T2)和337.5kg·hm(-2)(T3)4个钾肥处理，采用大田随机区组试验，研究了不同施钾量对花生根系干物质积累、根系形态、根瘤特性、植株养分吸收和产量的影响。【结果】2年试验结果表明，施钾对花生根系干重影响不大，各处理的根系干物质积累量无显著差异；与未施钾肥的CK相比，T2处理的施钾量可显著增加花生的总根长、总根表面积和总根体积；根瘤对钾素较敏感，在施钾量为112.5 kg·hm(-2)时，根瘤数量及干重在各时期均达到最大，钾素的施入促进了根瘤在花生结荚期的衰老；增施钾肥提高了植株氮、磷、钾素的最大积累速率、平均积累速率和最大积累量，延长了氮和钾的活跃积累期；施钾225 kg·hm(-2)时单株荚果数等产量构成因素及产量均高于其他处理。【结论】施钾量为225 kg·hm(-2)(T2)时，最有利于花生根系生长和养分吸收，增产效果最好；在施钾量为112.5 kg·hm(-2)(T1)时，最有利于根瘤的生长，增产效果次之。

关键词：花生钾素根系特性根瘤特性养分吸收产量

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：