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山东化工 1998年第6期27卷 25-26页

作者：任会学闵庆田何兴敏张业清山东省沂源县化肥厂

介绍分段分层快速还原工艺在ＪＲ－１０００型氨合成塔上的应用结果。采用分段分层快速还原新工艺，在电炉功率仅为额定值一半的情况下，用１２０ｈ的时间完成了还原，比常规还原法节省时间３０多ｈ，节省能源，降低消耗。

关键词：还原合成塔催化剂合成氨生产

Quantum and quasiclassical dynamics of C(^(3)P)+H_(2)(^(1Σ_(g)^(+)))→H(^(2)S)+CH(^(2)Ⅱ)reaction:Coriolis coupling effects and stereodynamics

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Chinese Physics B 2022年第4期31卷 255-260页

作者： Dong Liu Lulu zhang Juan Zhao Qin zhang Yuzhi Song qingtian Meng School of Science Shandong Jiaotong UniversityJinan 250357China School of Physics and Electronics Shandong Normal UniversityJinan 250358China

The dynamics of C+H_(2)→H+CH reaction is theoretically studied using the quasiclassical trajectory and quantum mechanical wave packet *** analysis of reaction probabilities,integral cross sections,and rate coefficients reveal the essential Coriolis coupling effects in the quantum mechanical wave packet *** calculated polarizationdependent differential cross section,P(θ_(r))and P(Φ_(r))show that the j'of product rotational angular momentum is not only aligned along the y axis and the direction of the vector x+z,but also strongly oriented along the positive y axis.

关键词： quantum dynamics quasiclassical trajectory method C+H_(2)

优质丰产‘美早’甜樱桃园土壤和叶片养分状况分析

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山东农业科学 2018年第8期50卷 96-99页

作者：李芳东王玉霞张福兴孙庆田张序李延菊田长平山东省烟台市农业科学研究院山东烟台265500

为指导烟台地区甜樱桃园的施肥管理和优质果品生产,在对我国甜樱桃主产区优质丰产园的土壤和叶片养分状况调查的基础上,进一步对烟台地区优质丰产‘美早’甜樱桃园的土壤和叶片养分状况、施肥状况、果实品质、产量及经济效益进行了调查... 详细信息

为指导烟台地区甜樱桃园的施肥管理和优质果品生产,在对我国甜樱桃主产区优质丰产园的土壤和叶片养分状况调查的基础上,进一步对烟台地区优质丰产‘美早’甜樱桃园的土壤和叶片养分状况、施肥状况、果实品质、产量及经济效益进行了调查研究,结果表明,在优质丰产甜樱桃施肥方面,应侧重低磷高钾复合肥的施用,增加含钙、镁、铁等中微量元素肥料用量;酸化土壤甜樱桃园还需增施有机肥和土壤改良剂。

关键词：优质丰产甜樱桃美早养分状况

Intra-continental Orogeny:Insights from Magnetotelluric Data into the Mesozoic Uplift History of the Eastern Jiangnan Orogen in South China

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Acta Geologica Sinica(English Edition) 2023年第1期97卷 55-67页

作者： zhang Kun LÜ qingtian ZHAO Jinhua YAN Jiayong LUO Fan MAN Zuhui XIAO Xiao zhang Gang YONG Fan Chinese Academy of Geological Sciences Beijing 100037China Key Laboratory of Deep Earth Science and Exploration Technology of Ministry of Natural Resources East China Institute of Technology Nanchang 330013China China’s University of Geosciences(Wuhan) Wuhan 430074China Central South University Changsha 410083China China’s University of Geosciences(Beijing) Beijing 100086China Institute of Geophysical and Geochemical Exploration Chinese Academy of Geological SciencesLangfangHebei 065000China

Despite extensive efforts to understand the tectonic evolution of the Jiangnan Orogen in South China,the orogenic process and its mechanism remain a matter of *** geodynamic studies have mostly focused on collisional orogeny,which is commonly invoked to explain the Jiangnan ***,it is difficult for such hypotheses to reconcile all the geological and geophysical data,especially the absence of ultrahigh-pressure metamorphic *** on the magnetotelluric data,we present a group of resistivity models produced through the combination of two-dimensional and three-dimensional inversions,revealing the geo-electrical structures of Jiangnan and a typical collisional *** our models,the resistive crust is separated into three parts by a prominent conductive layer with opposite dipping directions on both sides.A special thrust-nappe system,which is different from that developed in a typical collisional process,is revealed in the Jiangnan *** structure suggests a process different from the simple collisional *** interpret our observations,an'intra-continental orogeny'is proposed to address the development of the Jiangnan Orogen in the ***,this'reworked'process may contain at least two stages caused by the decoupling of the lithosphere,which is revealed by an extra conductive layer beneath Jiangnan.

关键词： magnetotelluric sounding 2D inversion 3D inversion intra-continental orogeny Jiangnan Orogen

葡萄VvMET1-1基因在葡萄和拟南芥中的功能研究

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中外葡萄与葡萄酒 2024年第3期 1-12页

作者：王风霞丁亭亭刘蕙萍李科杨国伟李傲张庆田 Chebukin Pavel 任凤山王鹏飞山东省葡萄研究院山东济南250100 俄罗斯瓦维洛夫植物研究所海参崴690014 山东省农业科学院山东济南250100 山东省酿酒葡萄与葡萄酒技术创新中心山东烟台265600

DNA甲基化修饰对于植物的生长发育十分重要,而MET1是植物中重要的甲基转移酶,能维持植物的CG位点甲基化修饰。为了研究葡萄MET1基因的功能及对植物发育的影响,将葡萄VvMET1-1基因转入葡萄胚性愈伤组织和拟南芥中进行研究。本研究选择35S... 详细信息

DNA甲基化修饰对于植物的生长发育十分重要,而MET1是植物中重要的甲基转移酶,能维持植物的CG位点甲基化修饰。为了研究葡萄MET1基因的功能及对植物发育的影响,将葡萄VvMET1-1基因转入葡萄胚性愈伤组织和拟南芥中进行研究。本研究选择35S::VvMET1-1-GFP表达载体转入葡萄胚性愈伤组织后检测到明显的GFP信号,且该胚性愈伤组织能被成功诱导为体细胞胚,表明VvMET1-1首次被成功转入葡萄胚性愈伤组织中并且不影响胚性愈伤组织的发育和分化。VvMET1-1被转入拟南芥中发现,该基因能影响拟南芥叶片的长度和宽度,但是不影响植株形态和种子发育;转录组数据分析表明,许多逆境胁迫、生长素、种子萌发、果实成熟、脱落酸和茉莉酸合成相关的基因差异表达;甲基化组结果显示,拟南芥过表达VvMET1-1后CG和CHH位点甲基化水平分别发生了明显的上调和下调,且DNA甲基化差异区(DMR)的类型主要是CG和CHH型,因此推测VvMET1-1可能通过调控DNA甲基化水平的变化影响下游基因的表达,进而调控拟南芥的生长发育。

关键词：葡萄胚性愈伤组织 VvMET1-1 转录组测序

基于ABC曲线的天津潮间带生物群落受扰动的分析

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天津科技大学学报 2019年第5期34卷 57-62页

作者：胡桂坤秦璐璐李郁郁蔡鹏飞刘亚顺申怡园张青田天津科技大学海洋与环境学院天津300457 天津市海洋环境保护与修复技术工程中心天津300457 天津市海洋资源与化学重点实验室天津300457

潮间带生物通常受到理化因素及人类活动的影响,其群落变化和环境状态有一定关系.基于2003年和2016年在天津海域进行的3次潮间带生物调查数据,用ABC曲线法分析了大型底栖动物群落受扰动的情况.结果表明:大型底栖动物群落受扰动的程度有... 详细信息

潮间带生物通常受到理化因素及人类活动的影响,其群落变化和环境状态有一定关系.基于2003年和2016年在天津海域进行的3次潮间带生物调查数据,用ABC曲线法分析了大型底栖动物群落受扰动的情况.结果表明:大型底栖动物群落受扰动的程度有加重的趋势.2003年5月的生物群落受扰动较轻,而2016年11月时则受到中度干扰,是3次调查中受扰动程度最严重、受扰动站位最多的时期.ABC曲线计算的W值与Shannon多样性指数及Pielou均匀度指数表现出极显著的相关性(P<0.01);ABC曲线能够展示出更多的生物信息,优于单一的多样性指数.生物群落受扰动的多个原因都与人类活动有关,应该控制海岸带开发的强度、经济生物的采捕量以及游人数量等,给潮间带生物足够的恢复时间.

关键词：潮间带大型底栖动物扰动 ABC曲线天津高沙岭

A Gravity Forward Modeling Method based on Multiquadric Radial Basis Function

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Acta Geologica Sinica(English Edition) 2021年第S01期95卷 62-64页

作者： LIU Yan LV qingtian HUANG Yao SHI Danian MENG Guixiang YAN Jiayong zhang Yongqian China Deep Exploration Center-SinoProbe Center Chinese Academy of Geological SciencesBeijing 100037China China University of Geosciences Wuhan 430074China

It is one of the most important part to build an accurate gravity model in geophysical *** gravity modelling is usually based on grid method,such as difference method and finite element method widely *** to self-adapt... 详细信息

关键词： geophysical exploration gravity forward modeling mesh-free method radial basis function

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“北冰红”山葡萄新品种适宜砧木的筛选

中外葡萄与葡萄酒 2009年第2期 33-35页

作者：宋润刚刘景宽范书田杨义明路文鹏李晓红张庆田沈育杰中国农业科学院特产研究所吉林左家132109 吉林省集安市特产技术推广总站吉林集安134200

北冰红枝条作接穗,左山一、双红、公酿一号和贝达葡萄枝条作砧木进行硬枝嫁接试验,筛选出北冰红适宜的砧木为贝达,其嫁接生根率平均76.1%,催根幼苗根系多,移栽苗圃地成活率高,出圃成苗率72.1%。北冰红与公酿一号、双红和左山一嫁接生根... 详细信息

北冰红枝条作接穗,左山一、双红、公酿一号和贝达葡萄枝条作砧木进行硬枝嫁接试验,筛选出北冰红适宜的砧木为贝达,其嫁接生根率平均76.1%,催根幼苗根系多,移栽苗圃地成活率高,出圃成苗率72.1%。北冰红与公酿一号、双红和左山一嫁接生根率平均37.8%、分别低于北冰红硬枝扦插和贝达嫁接41.5%和38.3%,公酿一号、双红和左山一的枝条不宜作北冰红硬枝嫁接的砧木。

关键词：北冰红硬枝嫁接成苗率

New Insights into the Mesozoic Large-scale Intra-plate Magmatism and Mineralization in South China from Seismic Tomography

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Acta Geologica Sinica(English Edition) 2023年第4期97卷 1243-1251页

作者： SHI Danian LÜqingtian SHEN Yang XU Xiaoming zhang Yongqian XU Yao ZHAO Jinhua GU Yumin SHI Jianyu CHEN Changxin SinoProbe Laboratory Chinese Academy of Geological SciencesBeijing 100037China University of Rhode Island KingstonRhode IslandUSA Institute of Geophysics China Earthquake AdministrationBeijing 100081China National Marine Environmental Forecasting Center Beijing 100081China

A great amount of new S-wave data has been combined to image the mantle structure down to lower mantle depth near the southeastern margin of Eurasia and understand the tectonics in South China since the *** results reveal a large-scale structure beneath the South China Sea,with a prominent,broad low-velocity feature of at least 1500-km wide in and below the mantle transition zone(MTZ)and a pronounced low-velocity feature of nearly 500-km wide in the lowermost *** these features may represent the head-and-tail of an upwelling mantle plume that has interacted with and deformed by the subducting plates in the *** Andaman-Sumatra plate is seen subducting steeply without stagnation in the MTZ over the large-scale low-velocity structure,suggesting that the upwelling mantle may have exerted significant influence on the overlying plate *** results suggest a long-term extensional regime near the southeastern margin of Eurasia,which may help to understand the formation of the large-scale intra-plate magmatism and mineralization with accumulation of huge amount of rare metal elements in South China during the Mesozoic,and the continental breakup,the southeastward extrusion of Indochina,and the opening of the South China Sea during the Cenozoic.

关键词： seismic tomography intra-plate tectonics mantle dynamics South China

Using deep learning to solve computer security challenges:a survey

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Cybersecurity 2018年第1期1卷 815-846页

作者： Yoon-Ho Choi Peng Liu Zitong Shang Haizhou Wang Zhilong Wang Lan zhang Junwei Zhou qingtian Zou The Pennsylvania State University PennsylvaniaUSA Pusan National University BusanRepublic of Korea Wuhan University of Technology WuhanChina

Although using machine learning techniques to solve computer security challenges is not a new idea,the rapidly emerging Deep Learning technology has recently triggered a substantial amount of interests in the computer security *** paper seeks to provide a dedicated review of the very recent research works on using Deep Learning techniques to solve computer security *** particular,the review covers eight computer security problems being solved by applications of Deep Learning:security-oriented program analysis,defending return-oriented programming(ROP)attacks,achieving control-flow integrity(CFI),defending network attacks,malware classification,system-event-based anomaly detection,memory forensics,and fuzzing for software security.

关键词： Deep learning Security-oriented program analysis Return-oriented programming attacks Control-flow integrity Network attacks Malware classification System-event-based anomaly detection Memory forensics Fuzzing for software security