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Climate warming shifts the time interval between flowering and leaf unfolding depending on the warming period

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Science China(Life Sciences) 2022年第11期65卷 2316-2324页

作者： Shuxin Wang Zhaofei Wu yufeng gong Shubiao Wang Wei Zhang Shanshan Zhang Hans J.De Boeck Yongshuo H.Fu College of Water Sciences Beijing Normal UniversityBeijing 100085China Beijing Zoo Beijing 100044China Plants and Ecosystems Department of BiologyUniversity of AntwerpAntwerpAntwerpen 2000Belgium

The timing of flowering(FL)and leaf unfolding(LU)determine plants’reproduction and vegetative *** warming has substantially advanced FL and LU of temperate and boreal plants,but their responses to warming differ,which may influence the time interval between FL and LU(ΔLU-FL),thereby impacting plant fitness and intraspecific physiological *** on twigs collected from two flowering-first tree species,Populus tomentosa and Amygdalus triloba,we conducted a manipulative experiment to investigate the effects of winter chilling,spring warming and photoperiod on theΔ*** found that photoperiod did not affect theΔLU-FL of Amygdalus triloba,but shortenedΔLU-FL by 5.1 d of Populus ***,spring warming and winter chilling oppositely affected theΔLU-FL of both ***,low chilling accumulation extended theΔLU-FL by 3.8 and 9.4 d for Populus tomentosa and Amygdalus triloba,but spring warming shortened theΔLU-FL by 4.1 and 0.2 d℃^(-1).Our results indicate that climate warming will decrease or increase theΔLU-FL depending on the warming periods,i.e.,spring or *** shifted time interval between flowering and leaf unfolding may have ecological effects including affecting pollen transfer efficiency and alter the structure and functioning of terrestrial ecosystem.

关键词： chilling flowering leaf unfolding photoperiod spring phenology time interval warming period

Insights into the role of RNA m^(6)A modification in the metabolic process and related diseases

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Genes & Diseases 2024年第4期11卷 270-295页

作者： Haiming Hu Zhibin Li Xia Xie Qiushi Liao Yiyang Hu Chunli gong Nannan Gao Huan Yang yufeng Xiao Yang Chen Department of Gastroenterology Xinqiao HospitalArmy Medical UniversityChongqing 400037China

According to the latest consensus,many traditional diseases are considered meta-bolic diseases,such as cancer,type 2 diabetes,obesity,and cardiovascular ***,metabolic diseases are increasingly prevalent because of the ever-improving living standards and have become the leading threat to human *** therapy methods have been applied to treat these diseases,which improves the quality of life of many patients,but the overall effect is still ***,intensive research on the metabolic process and the pathogenesis of metabolic diseases is imperative.N6-methyladenosine(m^(6)A)is an important modification of eukaryotic *** is a critical regulator of gene expression that is involved in different cellular functions and physiological *** studies have indi-cated that m^(6)A modification regulates the development of many metabolic processes and metabolic *** this review,we summarized recent studies on the role of m^(6)A modifica-tion in different metabolic processes and metabolic ***,we highlighted the potential m^(6)A-targeted therapy for metabolic diseases,expecting to facilitate m^(6)A-targeted strategies in the treatment of metabolic diseases.

关键词： Cancer mm^(6)A-targeted therapy Metabolic disease Metabolism N6-methyladenosine

Catalytic Activity of Cr（Ⅵ） in the Degradation of Phenol by H2O2 Under Acidic Conditions

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Transactions of Tianjin University 2019年第6期25卷 567-575页

作者： Qingyou Zeng Shaoyi Jia yufeng gong Songhai Wu Xu Han School of Chemical Engineering and Technology Tianjin UniversityTianjin 300350China College of Environmental Science and Engineering Tongji UniversityShanghai 200092China Key Lab of Indoor Air Environment Quality Control School of Environmental Science and EngineeringTianjin UniversityTianjin 300072China

Cr(Ⅵ)and phenol are toxic contaminants that need to be treated,and different methods have been researched to simultaneously remove these two contaminants from industrial *** this study,Cr(Ⅵ)was used as a novel Fenton-like catalyst in phenol degradation by *** the pH range of 3.0-11.0,the degradation efficiency of phenol decreased with elevated *** pH=3.0,100 mg/L phenol was effectively degraded by 2 mmol/L Cr(Ⅵ)and 20 mmol/L *** pH=7.0 and the same conditions as those of pH=3.0,79%of 100 mg/L phenol was removed within 6h,which was an improvement in pH limitation compared with the Fe(Ⅱ)-mediated Fenton *** experiments indicated that·OH generated from the catalysis of H2O2 by Cr(Ⅴ)instead of Cr(Ⅵ)was the primary oxidant that degraded *** pyrophosphate was added in the Cr(Ⅵ)/H2O2 system,complexes with the Cr(Ⅴ)intermediate rapidly formed and inhibited H2O2 decomposition,implying that the decomposition of H2O2 to·OH was catalyzed by Cr(Ⅴ)instead of Cr(Ⅵ).The presence of anions such as chloride and sulfate had insignificant effect on the degradation of *** and UV analyses suggest that phenol could not be completely oxidized to CO2 and H2O,and the intermediates identified by high performance liquid chromatography further indicates that maleic acid and benzoquinone were intermediates which may be further degraded into short chain acids,primarily maleic,formic,acetic,and oxalic acids,and eventually into CO2 and *** that more than 50%Cr(Ⅵ)can also be removed during this process,the Cr(Ⅵ)/H2O2 system is more appropriate for the simultaneous removal of Cr(Ⅵ)and phenol contaminants from industrial wastewater.

关键词： Cr(Ⅵ) Cr(Ⅴ) Phenol Fenton Simultaneous degradation

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榆林市谷瘟病和谷子叶斑病的发生与防治

陕西农业科学 2024年第5期70卷 90-94页

作者：赵艳群巩玉峰王富刚赵文忠霍棠米海宁郭艳芳冯蕾蕾榆林市农业技术服务中心陕西榆林719000 米脂县植保植检站陕西米脂718100 榆林学院生命科学学院陕西榆林719000 绥德县农业综合执法大队陕西绥德718002 榆阳区农业技术推广中心陕西榆林719000

随着我国西北地区暖湿化进程的发展,陕西省在榆林市降雨明显增加,谷瘟病和谷子叶斑病普遍发生,对谷子生产造成了严重损失。通过系统调查研究,明确了谷瘟病和叶斑病的发生特点、危害情况和发生原因,并提出了培育和引进抗病品种,强化预测... 详细信息

随着我国西北地区暖湿化进程的发展,陕西省在榆林市降雨明显增加,谷瘟病和谷子叶斑病普遍发生,对谷子生产造成了严重损失。通过系统调查研究,明确了谷瘟病和叶斑病的发生特点、危害情况和发生原因,并提出了培育和引进抗病品种,强化预测预报,开展科学防控,加强宣传培训的综合防治措施,以减少病害损失,保障粮食生产安全。

关键词：谷瘟病谷子叶斑病发生原因防治技术

Harmonic Suppression Method Based on Immune Particle Swarm Optimization Algorithm in Micro-Grid

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Journal of Power and Energy Engineering 2014年第4期2卷 271-279页

作者： Ying Zhang yufeng gong Junyu Chen Jing Wang Department of Information Engineering Zhejiang University of Technology Hangzhou China

Distributed generation has attracted great attention in recent years, thanks to the progress in new-generation technologies and advanced power electronics. And micro-grid can make full use of distributed generation, so it has been widespread concern. On the other hand due to the extensive use of power electronic devices and many of the loads within micro-grid are nonlinear in nature, Micro-grid generate a large number of harmonics, so harmonics pollution needs to be addressed. Usually we use passive filter to filter out harmonic, in this paper, we propose a new method to optimize the filter parameters, so passive filter can filter out harmonic better. This method utilizes immune particle swarm optimization algorithm to optimize filter parameters. It can be shown from the simulation results that the proposed method is effective for micro-grid voltage harmonics compensation.

关键词： Micro-Grid Immune Particle Swarm Optimization Algorithm Harmonic Compensation

基于纳米Pd/Fe和Pandoraea ***-1细菌的厌氧-好氧耦合体系对二氯苯的降解研究

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环境科学学报 2023年第11期43卷 33-41页

作者：袁波贡玉凤欧阳霁杨洁罗启仕崔长征华东理工大学资源与环境工程学院国家环境保护化工过程环境风险评价与控制重点实验室上海200237 上海市环境科学研究院国家环境保护城市土壤污染控制与修复工程技术中心上海200233 复旦大学环境科学与工程系上海200438 上海圣珑环境科技有限公司上海200235

DCB在土壤和地下水中频繁检出,对环境和人体健康构成潜在风险,亟需开发绿色、高效和降解彻底的修复技术.本研究首先利用合成的纳米Pd/Fe进行了地下水中DCB的动力学还原脱氯以及不同环境因子影响实验,在此基础上进一步提出一种耦合纳米Pd... 详细信息

DCB在土壤和地下水中频繁检出,对环境和人体健康构成潜在风险,亟需开发绿色、高效和降解彻底的修复技术.本研究首先利用合成的纳米Pd/Fe进行了地下水中DCB的动力学还原脱氯以及不同环境因子影响实验,在此基础上进一步提出一种耦合纳米Pd/Fe还原和微生物降解联合修复土壤和地下水中DCB污染的新思路.结果表明,Pd/Fe对3种DCB的还原速率呈现以下趋势:p-DCB>m-DCB>o-DCB.p-DCB的还原速率与Fe投加量和Pd负载量呈正相关,10 g·L^(-1)0.2%纳米Pd/Fe在15 min内能完全去除10 mg·L^(-1) p-DCB,p-DCB还原符合准一级反应动力学,还原速率K_(obs)为0.2366 min^(-1).阴离子影响实验表明纳米Pd/Fe还原p-DCB受NO_(3)^(-)离子抑制最为显著,抑制率为35.3%.然而,单独的纳米Pd/Fe还原实验只能将DCB还原至B,而耦合纳米Pd/Fe还原和微生物降解联合技术可以彻底降解DCB,土壤和地下水中的B、CB和DCB在20 h的时间内总去除分别为85.1%和100%.纳米Pd/Fe还原和微生物好氧降解联合去除DCB,能解决化学还原不彻底和直接生物降解效率低问题,在DCB污染场地修复中具有应用潜力.

关键词：二氯苯还原脱氯零价铁联合修复地下水修复

贵州省主要茶叶产地土壤养分含量特征和影响因素分析

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耕作与栽培 2023年第6期43卷 17-20,24页

作者：龚宇锋曾宪平张珍明贵州中医药大学药学院贵阳550025 遵义市农村发展服务中心贵州遵义563001 贵州省宸铭鑫农业科技有限公司贵阳550025 贵州大学资源与环境工程学院贵阳550025 贵州大学喀斯特地质资源与环境教育部重点实验室贵阳550025 贵州喀斯特环境生态系统教育部野外科学观测研究站贵阳550025

本研究以贵州省主要茶叶产地(贵定县,都匀市和湄潭县)为研究对象,探究贵州省不同茶园土壤养分含量差异特征和影响因素。结果表明,贵州茶园产地为酸性土壤,根据中国第二次土壤普查,贵定县、都匀市和湄潭县土壤有机质、全N、碱解N、全P和... 详细信息

本研究以贵州省主要茶叶产地(贵定县,都匀市和湄潭县)为研究对象,探究贵州省不同茶园土壤养分含量差异特征和影响因素。结果表明,贵州茶园产地为酸性土壤,根据中国第二次土壤普查,贵定县、都匀市和湄潭县土壤有机质、全N、碱解N、全P和有效P平均含量均为一级,贵定县、都匀市和湄潭县土壤速效K平均含量为二级,全K含量偏低,为五级或六级。土壤有机质、全N、全P、全K、速效N、速效P和速效K,彼此之间表现出较强的相关性,且大部分为正相关。总体上,贵州不同茶园产地(贵定县、都匀市和湄潭县)土壤肥力较好,全K含量偏低。在茶园管理过程中应当注意施用钾肥。

关键词：茶土壤养分含量特征

气候变化对北京常见树种春季萌芽的影响——基于控制实验研究

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生态学报 2023年第5期43卷 1948-1958页

作者：龚玉凤吴兆飞付永硕王姝心陈艳生王树标张珊珊张伟北京师范大学水科学研究院北京100875 北京林业大学北京100083 北京动物园北京100044

气候变化对植物物候产生了重要影响,春季萌芽时间的变化不仅会通过改变植物的光合作用影响碳汇能力,还会通过改变群落内的种间关系影响生态系统结构和功能。因此,掌握群落内不同树种春季萌芽对气候变化的响应对于深刻理解物候时间位分... 详细信息

气候变化对植物物候产生了重要影响,春季萌芽时间的变化不仅会通过改变植物的光合作用影响碳汇能力,还会通过改变群落内的种间关系影响生态系统结构和功能。因此,掌握群落内不同树种春季萌芽对气候变化的响应对于深刻理解物候时间位分化、认识陆地生态系统碳水循环和能量平衡具有重要意义。为提高春季物候模型的预测精度,阐明气候变化对不同树种春季萌芽的影响,以鹅耳枥(Carpinus turczaninowii)、黑桦(Betula dahurica)、华北落叶松(Larix principis-rupprechtii)、糠椴(Tilia mandshurica)和元宝枫(Acer truncatum)5个温带森林的典型树种为研究对象,通过剪枝实验分析了冬季冷激、春季温度和光周期对枝条春季萌芽时间的影响。结果表明,温度升高和冷激增加显著提前了所有树种的春季萌芽时间,从5℃到20℃,春季萌芽时间平均提前了54.5 d;在较高的冷激条件下,春季萌芽时间平均缩短了17.8 d;光周期对各树种春季萌芽时间均没有显著影响,8 h和16 h光周期条件下各树种平均萌芽时间分别为30.3和30.5 d。此外,随着温度升高,5个树种萌芽时间间隔显著缩短,这主要是由于温度升高萌芽热量需求降低导致的,冷激对树种间萌芽时间间隔无显著影响。在气候变暖背景下,森林群落中不同树种萌芽时间间隔将显著缩短,进而影响物候时间生态位分化,导致种间竞争加剧。研究阐明了气候变化对温带阔叶树种春季萌芽及其时间间隔的影响,为气候变化条件下森林生态系统群落动态及森林可持续经营与管理策略的制定提供了理论支撑。

关键词：气候变化春季萌芽温度敏感性冷激光周期时间生态位

翻转课堂在“生命周期营养”课程中的教学改革与应用

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农产品加工 2022年第5期 97-99页

作者：游丽君龚钰凤李晓玺华南理工大学食品科学与工程学院广东广州510640

以食品学科的理论基础课程“生命周期营养”为例,介绍该课程的教学现状,通过采用翻转课堂教学模式应用于传统课堂教学中,在教学中融入互联网信息技术思维,从教学内容、过程、手段和考核等方面颠覆传统课堂教学模式,将主动权与主体地位... 详细信息

以食品学科的理论基础课程“生命周期营养”为例,介绍该课程的教学现状,通过采用翻转课堂教学模式应用于传统课堂教学中,在教学中融入互联网信息技术思维,从教学内容、过程、手段和考核等方面颠覆传统课堂教学模式,将主动权与主体地位还给学生,完成课堂中教师和学生的角色转变,为学生营造兴趣高、积极性高的学习氛围,提高教学质量和效果,推动“生命周期营养”课程的应用和教育改革,推动传统课堂教学模式的革新。

关键词：翻转课堂生命周期营养教学模式食品