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不同氮水平处理下滴灌棉花ABA与10cm土层田间持水率之间的响应特征

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中国农学通报 2016年第6期32卷 68-74页

作者：张建新何江勇高润宏新疆农垦科学院农田水利与土壤肥料研究所新疆石河子832000 内蒙古农业大学林学院呼和浩特010019

为了揭示滴灌棉花节水节肥效果,为滴灌棉花节水节肥提供技术参数和理论依据,以‘新陆早42号’为试验材料,采用滴灌盆栽试验,研究滴灌棉花ABA与土层10 cm田间持水率之间的响应关系,获得蕾期和花铃期不同施N水平条件下其相关性及模型。研... 详细信息

为了揭示滴灌棉花节水节肥效果,为滴灌棉花节水节肥提供技术参数和理论依据,以‘新陆早42号’为试验材料,采用滴灌盆栽试验,研究滴灌棉花ABA与土层10 cm田间持水率之间的响应关系,获得蕾期和花铃期不同施N水平条件下其相关性及模型。研究结果表明:棉花蕾期不同处理纯N分别为2、4、6 g/盆的条件下,ABA含量与土层10 cm田间持水率之间呈负相关关系,相关性系数分别为-0.988、-0.894、-0.980,其模型分别为指数函数、对数函数和对数函数,模型拟合决定系数分别为0.954、0.796、0.946。花铃期,ABA含量与土层10 cm田间持水率之间呈负相关关系,相关性系数分别为-0.781、-0.600、-0.857,其模型分别为二次函数、二次函数和对数函数,模型拟合决定系数分别为0.623、0.911、0.965。本文研究的拟合模型函数有利地描述了滴灌棉花ABA与土层10 cm的田间持水率之间响应特性,可为内陆干旱区绿洲农业滴灌棉花的节水节肥的估算提供了新的计算方法和科学依据。

关键词：滴灌盆栽棉花 ABA 田间持水率

氮肥减施下有机肥替代对滴灌棉花产量、氮素吸收利用及土壤硝态氮的影响

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新疆农业科学 2023年第9期60卷 2138-2145页

作者：杨国江陈云林祥群何江勇刘盛林曲永清新疆农垦科学院/农业农村部西北绿洲节水农业重点实验室新疆石河子832000 新疆石河子职业技术学院新疆石河子832000 新疆沃土壮苗农业科技有限公司新疆克拉玛依834032 新疆石河子新业农牧生物发展有限公司新疆石河子832000

【目的】比较氮肥减施条件下有机肥替代在滴灌棉花上的肥效及其对土壤硝态氮的影响,以选择合适的有机肥替代氮肥技术,提高氮肥利用率。【方法】试验设5个处理,分别为(1)不施氮肥(N 0);(2)习惯施肥(N 300);(3)习惯施肥减氮20%(N 240);(4... 详细信息

【目的】比较氮肥减施条件下有机肥替代在滴灌棉花上的肥效及其对土壤硝态氮的影响,以选择合适的有机肥替代氮肥技术,提高氮肥利用率。【方法】试验设5个处理,分别为(1)不施氮肥(N 0);(2)习惯施肥(N 300);(3)习惯施肥减氮20%(N 240);(4)习惯施肥减氮20%后,75%由尿素提供,25%由有机肥提供(N 180 MN 60);(5)在处理(4)的基础上增加黄腐酸150 kg/hm^(2)(N 180 MN 60 FA)。分析有机肥替代氮肥技术对棉花产量及氮肥利用率的影响。【结果】(1)与习惯施肥相比,N 180 MN 60 FA显著增加棉花干物质量,增产3.3%~6.4%;而有机肥替代部分氮肥与习惯施肥的棉花干物质与产量大体相同。(2)与习惯施肥相比,N 180 MN 60、N 180 MN 60 FA的棉花氮素吸收量没有显著差异,但氮肥利用率分别增加了8.4和11.0个百分点,减少了土壤氮素盈余。(3)等氮量条件下,N 180 MN 60 FA显著增加了土壤硝态氮含量。【结论】在减氮20%条件下,有机肥替代部分氮肥再配施黄腐酸的效果优于习惯施肥,而有机肥替代部分氮肥效果与习惯施肥相当。

关键词：有机肥替代氮肥棉花产量

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颅脑超声诊断新生儿脑室周围-脑室内出血的价值

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临床超声医学杂志 2008年第5期10卷 341-342页

作者：刘皎然贺江勇刘芳杜志芳石家庄市白求恩国际和平医院超声科 050082 石家庄市白求恩国际和平医院新生儿室 050082

目的评价颅脑超声在诊断新生儿脑室周围-脑室内出血(PIVH)中的临床意义。方法应用新生儿颅脑超声专用探头对120例患儿进行检查,超声检出的PIVH患儿行CT和MRI检查以对照分析。结果超声检出PIVH共30例,MRI、CT对此30例病人阳性检出数分别... 详细信息

目的评价颅脑超声在诊断新生儿脑室周围-脑室内出血(PIVH)中的临床意义。方法应用新生儿颅脑超声专用探头对120例患儿进行检查,超声检出的PIVH患儿行CT和MRI检查以对照分析。结果超声检出PIVH共30例,MRI、CT对此30例病人阳性检出数分别为30例和23例,超声对PIVH的检出高于CT。结论新生儿颅脑超声对PIVH临床诊断有重要意义。

关键词：新生儿超声检查脑室周围-脑室内出血

利用镜质组反射率鉴定兰炭与煤粉互混样的方法解析

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冶金能源 2022年第5期41卷 13-18页

作者：俞楠邹冲刘诗薇张增悦王毅何江永西安建筑科技大学冶金工程学院神木市兰炭产业服务中心

利用煤焦显微分析系统测定了不同温度热解兰炭、纯工业兰炭及其所用原煤的反射率分布,并进行了兰炭掺煤实验。结果表明,通过镜质组随机反射率分布可辨别兰炭中掺混煤粉情况。通过测定兰炭的镜质组反射率分布区间可以判断兰炭的热解程度... 详细信息

利用煤焦显微分析系统测定了不同温度热解兰炭、纯工业兰炭及其所用原煤的反射率分布,并进行了兰炭掺煤实验。结果表明,通过镜质组随机反射率分布可辨别兰炭中掺混煤粉情况。通过测定兰炭的镜质组反射率分布区间可以判断兰炭的热解程度均匀性,分布区间越大,热解程度越不均匀。

关键词：兰炭镜质组反射率热解温度掺煤喷吹

FREPD: A Robust Federated Learning Framework on Variational Autoencoder

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Computer Systems Science & Engineering 2021年第12期39卷 307-320页

作者： Zhipin Gu Liangzhong he Peiyan Li Peng Sun jiangyong Shi Yuexiang Yang National University of Defense Technology Changsha410000China China Mobile(Suzhou)Software Technology Co.Ltd. Suzhou215000China Eindhoven University of Technology Eindhoven5641BZNetherlands

Federated learning is an ideal solution to the limitation of not preser-ving the users’privacy information in edge *** federated learning,the cloud aggregates local model updates from the devices to generate a global *** protect devices’privacy,the cloud is designed to have no visibility into how these updates are generated,making detecting and defending malicious model updates a challenging *** existing works that struggle to tolerate adversarial attacks,the paper manages to exclude malicious updates from the glo-bal model’s *** paper focuses on Byzantine attack and backdoor attack in the federated learning *** propose a federated learning frame-work,which we call Federated Reconstruction Error Probability Distribution(FREPD).FREPD uses a VAE model to compute updates’reconstruction *** with higher reconstruction errors than the average reconstruction error are deemed as malicious updates and ***,we apply the Kolmogorov-Smirnov test to choose a proper probability distribution function and tune its parameters to fit the distribution of reconstruction errors from observed benign *** then use the distribution function to estimate the probability that an unseen reconstruction error belongs to the benign reconstruction error *** on the probability,we classify the model updates as benign or *** benign updates are used to aggregate the global *** is tested with extensive experiments on independent and identically distributed(IID)and non-IID federated benchmarks,showing a competitive performance over existing aggregation methods under Byzantine attack and backdoor attack.

关键词： Federated learning reconstruction error probability distribution

硅铁冶炼用兰炭性能指标的新认识与测定方法(Ⅰ)

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铁合金 2022年第6期53卷 15-20页

作者：邹冲王毅马成李彬赵生三何江永冯文文西安建筑科技大学冶金工程学院陕西西安710055 西京学院电子信息学院陕西西安710123 内蒙古正能化工集团有限公司内蒙古鄂尔多斯017200

兰炭已成为我国硅铁冶炼用主要碳质还原剂。文章对硅铁冶炼所需兰炭的理化性质指标产生的历史与内在原因进行总结分析,对兰炭的电阻率、粒度、机械强度和反应性等性能提出了新的认识,不同兰炭之间的高温电阻率和反应性接近且高于传统还... 详细信息

兰炭已成为我国硅铁冶炼用主要碳质还原剂。文章对硅铁冶炼所需兰炭的理化性质指标产生的历史与内在原因进行总结分析,对兰炭的电阻率、粒度、机械强度和反应性等性能提出了新的认识,不同兰炭之间的高温电阻率和反应性接近且高于传统还原剂;入炉兰炭粒度区间应缩小并与炉容匹配;认为兰炭机械强度、烧损程度及粉化率应作为评价体系的重要组成指标。提出了上述指标的测定方法及装置,并初步验证了使用效果。

关键词：兰炭硅铁冶炼指标

硅铁冶炼用兰炭性能指标的新认识与测定方法(Ⅱ)

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铁合金 2023年第1期54卷 11-15页

关键词：兰炭硅铁冶炼指标

Role of water chemistry on estrone removal by nanofiltration with the presence of hydrophobic acids

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Frontiers of Environmental Science & Engineering 2015年第1期9卷 164-170页

作者： Xue JIN jiangyong HU School of Engineering University of Glasgow Glasgow G12 8LT UK Department of Civil and Environmental Engineering National University of Singapore Singapore 117576 Singapore

Hydrophobic acid organic matter （HpoA） extracted from treated effluent has been known to improve the rejection of steroid hormone estrone by reverse osmosis （RO） and nanofiltration （NF） membranes. In this study, the effects of solution chemistry （solution pH and ionic strength） on the estrone rejection by NF membrane with the presence of HpoA were systematically investigated. Crossflow nanofiltration experiments show that the presence of HpoA significantly improved estrone rejection at all pH and ionic strength levels investigated. It is consistently shown that the ＂enhancement effect＂ of HpoA on estrone rejection at neutral and alkaline pH is attributed to the binding of estrone by HpoA macromolecules via hydrogen bonding between phenolic functional groups in feed solutions, which leads to an increase in molecular weight and appearance of negative charge. The membrane exhibited the best performance in terms ofestrone rejection at pH 10.4 （compared to pH 4 and pH 7） as a result of strengthening the electrostatic repulsion between estrone and membrane with the presence of HpoA. At neutral pH level, the ability of HpoA macromolecules to promote estrone rejection became stronger with increasing ionic strength due to their more extended conformation, which created more chances for the association between estrone and HpoA. The important conclusion of this study is that increasing solution pH and salinity can greatly intensify the ＂enhancement effect＂ of HpoA. These results can be important for NF application in direct/indirect potable water reuse.

关键词： steroid hormone nanofiltration(NF) rejection water chemistry hydrophobic acids indirect potable water reuse

Revealing the characteristics of dissolved organic matter in urban runoff at three typical regions via optical indices and molecular composition

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Journal of Environmental Sciences 2021年第10期33卷 8-21页

作者： Zhenliang Liao jiangyong Chu Chongjia Luo Hao Chen College of Civil Engineering and Architecture Xinjiang UniversityUrumqi 830046China UNEP-Tongji Institute of Environment for Sustainable Development College of Environmental Science and EngineeringTongji UniversityShanghai 200092China Key Laboratory of Yangtze River Water Environment Ministry of EducationTongji UniversityShanghai 200092China Shanghai Institute of Pollution Control and Ecological Security Shanghai 200092China Shanghai Academy of Environmental Sciences Shanghai 200233China

Dissolved organic matter(DOM)plays a major role in ecological systems and influences the fate and transportation of many *** the significance of DOM,understanding of how environmental and anthropogenic factors influence its composition and characteristics is limited,especially in urban stormwater *** this article,the chemical properties(pollutant loads,molecular weight,aromaticity,sources,and molecular composition)of DOM in stormwater extracted from three typical end-members(traffic,residential,and campus regions)were characterized by UV–visible(UV–vis)spectroscopy,excitationemission matrix spectroscopy combined with parallel factor analysis(EEM-PARAFAC),and ultra-performance liquid chromatography quadrupole time-of-flight mass spectrometry(UPLC-Q-TOF-MS).There are three findings:(1)The basic properties of DOM in stormwater runoff varied obviously from three urban fields,and the effect of initial flush was also apparent.(2)The DOM in residential areas mainly came from autochthonous sources,while allochthonous sources primarily contributed to the DOM in traffic and campus ***,it was mainly composed of terrestrial humic-like components with CHO and CHON element composition and HULO and aliphatic formulas.(3)The parameters characterizing DOM were primarily related to terrestrial source and aromaticity,but their correlations *** the combination of optical methods and UPLC-Q-TOF spectrometry,the optical and molecular characteristics of rainwater are effectively revealed,which may provide a solid foundation for the classification management of stormwater runoff in different urban regions.

关键词： Urban stormwater runoff Dissolved organic matter(DOM) Optical properties Molecular composition characteristics