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方言 2024年第1期46卷 97-108页

作者：程宗洋岳立静山东大学文学院/语言科学实验中心济南

本文记录安徽宁国南极(龙川)方言的声韵调,列出同音字汇。

关键词：安徽宁国南极(龙川)方言吴语宣州片太高小片声韵调同音字汇

Influence of Climatic Change on Rice Production in Anqing Zone

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meteorological and Environmental Research 2011年第7期2卷 50-52页

作者： ZOU Shi-jiang1,2,HU Ji-chao1,ZHANG Dou-sheng2,JIANG Xiao-wu3 1.Department of Applied meteorological Science,Nanjing University of Information Science and Technology,Nanjing 210044,china 2.zongyang meteorological bureau in anhui province,zongyang 2.6701,china 3.Dingyuan meteorological bureau in anhui province,Dingyuan 233200,china

[Objective] The research aimed to study the influence of climatic variation on rice production in Anqing zone.[Method] Based on temperature and precipitation data in rice growth period (May-November) during 1980-2009,by using five-year sliding average method,the moving average charts of temperature and rainfall were *** variation characteristics of main factors (temperature and precipitation) which affected rice growth were *** using line moving average simulation method,the climatic yield was separated,and the influence of climatic factor on rice yield in Anqing zone was analyzed.[Result] In recent 30 years,the temperature presented rise trend in rice growth period in Anqing *** from 1993,the rise was *** the rainfall had decline trend,and the rainfall was stable after *** were the climatic background for that rice yield had a wave of quick increase after *** from the separated results of trend yield and meteorological yield,the variation range of relative meteorological yield was big,and the maximum yield reduction reached 27.5%.In recent 30 years,there were four yield reduction *** relationship between meteorological yield of rice and temperature was positive correlation except in *** excessive rainfall in the rice harvest period had unfavorable influence on rice *** drought was the main meteorological agricultural disaster which affected rice yield in the zone.[Conclusion] The research provided the theoretical basis for improving grain yield in Anqing zone.

关键词： Climatic variation Rice production Influence analysis Anqing zone china

On the siltation of the middle Yangtze River

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Science china Earth Sciences 2004年第5期47卷 463-480页

作者： YIN Hongfu1, CHEN Guojin2, LI Chang抋n1 & WEI Yuan3 1. School of Earth Sciences, china University of Geosciences, Wuhan 430074, china 2. Hydrogeological Team, Hubei bureau of Geology and Mineral Resources, Jingzhou 434100, china 3. Geological Survey of Jiangxi province, Nanchang 330201, china china Univ Geosci Sch Earth Sci Wuhan 430074 Peoples R China Hubei Bur Geol & Mineral Resources Hydrogeol Team Jinzhou 434100 Peoples R China Geol Survey Jiangxi province Nanchang 3300201 Peoples R China

About 5.2×108 t/a of silts from the upper reach of the Yangtze River are transported through Yichang into the middle Yangtze River. The middle Yangtze itself and its tributaries yield ca. 0.8×108 t silts annually. Of this total 6×108 t/a input of silts, ca. 1.2×108 t/a are deposited within the river artery and lakes, while ca 4.83×108 t/a are at first transported into the lower reach through Datong, and then either deposited along the river and the Yangtze Delta, or output into the sea. Along the middle Yangtze River silting generally exceeds scouring, but the spatial and temporal distributions of scour-and-fill, as well as its distribution in the river valley transections, are uneven. Along the Yichang-Chenglingji and Jiujiang-Datong Segments of the middle Yangtze, scouring exceeds or equals silting. Silting mainly occurs along the Luoshan-Wuhan-Huangshi Segments with Wuhan as the pivotal point, as well as in the Dongting and Poyang Lakes. Even in these silting-dominated areas, there are times and parts of segments that scouring prevails. As to the transections, generally the river channel of main stream is scouring-dominated, forming V-shaped sections to a depth of 2030 m or more, whereas the floodplains and bar islands are silting-dominated, forming wide and relatively high flats, which are often artificially transformed into protected embankments. Because the Jingjiang Levee separates the Jianghan Plain from Yangtze to the south, little has been deposited in that plain except a few sediments from the Han River—a tributary of the middle Yangtze. This factor plus the tectonic sag of that plain has made the altitude of plain surface several meters lower than that of the levee in most of the areas. Sil-tation along the Luoshan-Wuhan-Huangshi Segments has resulted in the elevation of flood level in this and upstream segments. River channel scouring plus floodplain silting have caused the transections of the middle Yangtze valley typically with deep channel and height

关键词： the middle Yangtze, scour-and-fill, siltation, silt utilization.

Study on Characteristics of Wind in Low-level Air in Anqing from 2004 to 2008

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meteorological and Environmental Research 2011年第11期2卷 8-12页

作者： CHEN Long-hu,WU Yue-you,WANG Wen-bing Anqing meteorological bureau in anhui province,Anqing 246001,china

[Objective] The characteristics and rules of low-level air in Anqing from 2004 to 2008 were studied.[Method] By dint of L waveband radar air-exploration meteorological data in Anqing station from 2004 to 2008,the characteristics in the lower air in Anqing were studied based on wind speed profile and wind rose profile.[Result] Anqing,which locates in the lower reaches of Yangtze River,was influenced by monsoon and wind seasonal changes were *** northeast wind prevailed in the near-ground layer and average annual frequency was 34.6%.The still wind frequency was relatively high and annual average reached 18.5%.The frequency of southwest wind in the summer-half-year *** frequency of wind from 700 m to the upper air was relatively diverged,and it was mainly westerly to 3 000 m *** ot the wind speed profile,wind speed in the height below 700 m enlarged and then it slowed down from 700 to 2 000 m high and in winter the wind above 2 000 m fastened dramatically.[Conclusion] The characteristics of wind speed and wind direction in Anqing in recent years were summarized,which provided reference for climate changes in Anqing.

关键词： Pollution Atmosphere boundary Wind rose profile china

Probabilistic Estimation of Hazard on Engineering Site Based on the Intensity of Historic Earthquakes and A Preliminary Comparison with Seismic Hazard Analysis

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Earthquake Research in china 1995年第1期9卷 36-44页

作者： Zhang Jie and Shen JianwenSeismological bureau of anhui province,Hefei 230031,china

This paper introduces a new method to estimate the seismic hazard on engineering *** method is mainly based on intensity data of historical *** obvious feature of the method is to use some ideas of seismic hazard analysis and considering regional seismicity *** authors depict the comprehensive method to estimate the related parameters and predict the seismic hazards for 14 sites as practical *** problems are also *** with seismic hazard analysis,this method has certain advantages,such as simpler computation,lower uncertainty and smaller sensitivity *** total hazard P(I≥i)of a site can be examined with real historic *** result given by the method in this paper can be more stable than that given by seismic hazard analysis nowadays.

关键词： Historical seismological data Seismic risk evaluation

Analysis of Seismic Risk at an Engineering Site from Site Effect Seismic Intensity Data Using the Seismotectonic Method——Taking Six Reservoir Dam Sites in Western anhui as an Example

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Earthquake Research in china 2003年第4期17卷 376-385页

作者： Zhang Jie, Wang Xingzhou and Shen XiaoqiSeismological bureau of anhui province, Hefei 230031, china Seismological bureau of anhui province Hefei 230031 China

The seismotectonic method is used to study the seismogenic structures and the maximum potential earthquake around an engineering site in order to determine the seismic risk at the site. Analysis of seismic risk from site effect seismic intensity data, in combination with regional seismo_geological data, using the seismotectonic method can provide a more reliable result. In this paper, taking the area of six reservoir dam sites in western anhui as an example, we analyze the seismic risk from site effect seismic intensity data in combination with the seismotectonic conditions and find that P (I≥i)=10% over 50 years. The result shows that the seismogenic structure and the maximum potential earthquake have a controlling effect on seismic risk from future earthquakes in the area around the site.

关键词： Engineering site Effect seismic intensity Seismogenic structure Seismic risk

Study on the Characteristics ofSeismic Activity in West china andIts neighboring Regions

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Earthquake Research in china 2001年第3期15卷 321-328页

作者： Chen Yuwei,Shen Yelong and Ling Xueshu Seismological bureau of anhui province, Hefei 230031,china Seismological bureau of Anhul province Hefei 230031 China

The controlling and influencing effects of the joint action of plates surrounding china on strong earthquakes in Chinese mainland are discussed, and the characteristics of seismic activities in the West of china and neighboring regions are further studied. The results show that the seismic activity in the West of china and neighboring regions not only has the characteristics of high tide and low tide alternation but also has the characteristics of rising in one region while falling in another, and the rise and fall of seismicity are in some proportion. The above characteristics are useful for the prediction of main body region of strong earthquakes in Chinese mainland, especially for the judgement of the ending time of the high tide period.

关键词： Strong earthquakes in Chinese mainland The collision belt Influencing zone The rise and fall of seismicity Characteristics of seismic activities

Microscopic Indicators of Stick-Slip and Creep-Slip in Deformation Products From the Daqingshan Piedmont Active Fault

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Earthquake Research in china 1996年第1期10卷 58-66页

作者： Yao Daquan,Tang Youbiao,Li Jie,and Liu JiacanSeismological bureau of anhui province,Hefei 230031,china

Through the collection of oriented samples,consolidation of undisturbed samples,and systematic microscopy of thin sections,the deformation products from the Daqingshan piedmont active fault zone have been *** obtained results have been analyzed in combination with those of rock fracture experiments and macroscopic *** on the above,the present article summarizes the microscopic indicators of stick-slip and creep-slip,which reflect the characteristics of fault movement,and has given some suggestion on relevant problems.

关键词： Stick slip Creep slip Microstructure Palaeoearthquake Active fault Nei Monggai

甘薯褪绿斑病毒山东分离物全基因组扩增及遗传进化分析

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植物病理学报 2024年第2期54卷 279-290页

作者：韩志磊李光艳孙晓辉吴斌洪浩庞宗洋王树森辛志梅竺晓平姜珊珊山东省农业科学院植物保护研究所山东省植物病毒学重点实验室济南250100 农业农村部植保生物技术重点实验室宁波315211 山东农业大学植物保护学院山东省蔬菜病虫学重点实验室泰安271018 山东省郯城县农业技术推广中心郯城276100 山东省诸城市农业农村局诸城262200

为了解甘薯褪绿斑病毒(sweet potato chlorotic fleck virus,SPCFV)在山东省的发生及遗传进化情况,分别于2019年和2020年采集了131份甘薯样品,针对SPCFV进行病毒检测、全基因序列扩增、序列分析及遗传进化树构建。结果显示:SPCFV两年的... 详细信息

为了解甘薯褪绿斑病毒(sweet potato chlorotic fleck virus,SPCFV)在山东省的发生及遗传进化情况,分别于2019年和2020年采集了131份甘薯样品,针对SPCFV进行病毒检测、全基因序列扩增、序列分析及遗传进化树构建。结果显示:SPCFV两年的检出率分别为7.1%和5.6%,所有SPCFV感染样品中皆为SPCFV与其他病毒的复合侵染。通过RACE和RT-PCR获得CFV-SD1和CFV-SD2两个全基因组序列,全长均为9105 bp;与已报道分离物核苷酸序列一致性为72.9%~89.5%。全基因组遗传进化分析显示所有SPCFV分离物聚为两簇。且从不同样品中获得6个SPCFV山东分离物的外壳蛋白(coat protein,CP)序列,基于CP氨基酸序列开展遗传进化分析表明,山东分离物均归于亚洲类群的第一簇(Asian isolates 1)。氨基酸偏好性分析显示,CP氨基酸序列N端前35位同样存在多变区。本研究表明了山东省已成为SPCFV的常发区域,且病毒群体存在多样性,研究结果为指导SPCFV的有效防控提供了理论依据。

关键词：甘薯褪绿斑病毒山东省全基因组序列外壳蛋白遗传进化分析

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BP网络过拟合满足的不确定关系式

系统工程与电子技术 2002年第9期24卷 94-96,125页

作者：李祚泳蔡辉成都信息工程学院信息科学技术研究所四川成都610041 安徽省气象局气象中心安徽合肥230031

为了研究BP网络的过拟合现象 ,通过类比信息传递过程中的一般测不准关系式 ,建立了BP网络出现过拟合现象时的网络学习能力与推广能力之间满足的一般不确定关系式。通过模拟多种不同类型复杂程度函数的数值试验 ,确定出不确定关系式中的... 详细信息

为了研究BP网络的过拟合现象 ,通过类比信息传递过程中的一般测不准关系式 ,建立了BP网络出现过拟合现象时的网络学习能力与推广能力之间满足的一般不确定关系式。通过模拟多种不同类型复杂程度函数的数值试验 ,确定出不确定关系式中的过拟合参数的取值范围为 1× 10 -5～ 5× 10 -4。根据一般不确定关系式 ,给出应用BP网络对给定样本集的训练过程中 ,避免出现过拟合现象 ,提高网络推广能力的方法。

关键词： BP网络过拟合不确定关系式学习能力推广能力信息论神经网络