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TRANSFORMATION HYSTERESIS AND STABILITY OF STRAIN MARTENSITE IN A Ni_(47)Ti_(44)Nb_9 ALLOY

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Acta Metallurgica Sinica(English Letters) 1991年第6期4卷 436-440页

作者： ZHANG chunsheng CAI wei ZHAO Liancheng Harbin Institute of Technology,Harbin,China

The transformation hysteresis and stability of strain martensite in Ni_(47)Ti_(44)Nb_ alloy have been studied by means of tensile tests at various temperatures and electrical resistance measurements as well as TEM *** was shown that there is a characteristic deformation temperature and a strain range,in which the critical yield stress for stress-in- duced transformation acquires optimum matching with the yield strength of the β-Nb parti- *** this case,deformatian can effectively increase the transformation hysteresis,while the strain recovery ratio remains usefully *** martensite with irreguldar *** substructure and martensite containing some dislocations as well as martensite intersected by the β-Nb particles possess high stability.

关键词： NiTiNb shape memory alloy transformation hysteresis strain martensite

Biological Evaluation of Water Quality for Benthos in Typical Rivers of Eastern Jilin Province

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Asian Agricultural Research 2021年第7期13卷 42-44页

作者： Lei XU Jing WANG Xiaolai WU Shukun JIANG chunsheng wei Hydrology and Water Resources Bureau of Jilin Province Water Environment Monitoring Center of Jilin Province Changchun 130000 China Xinlicheng Reservoir Management Bureau of Changchun City Jilin Province Changchun 130000 China

Benthos are aquatic organisms living at the bottom of water bodies for all or most of their life *** from the settled and moving living,their forms of habitat are mostly attached to the hard substrate like rocks or soft bases such as mud and *** addition,there are benthic species that attach to the plant surfaces or other benthic animals,and inhabit the intertidal *** terms of feeding methods,most benthic animals feed on suspended matter and *** of them are invertebrates and are a complex ecological *** to the size,they can be divided into macrobenthos and meio-benthos[1].Benthos are an important part of the water *** a typical river(Gaya River)in eastern Jilin Province,this paper analyzed the water quality,the components of benthic organisms and their biological density through sampling surveys of three typical locations in the upper,middle and lower reaches of the Gaya *** addition,it made a biological evaluation of the water quality of the Gaya River.

关键词： Eastern Jilin Province Typical River Benthos Evaluation scheme

Health Assessment of Typical Reservoirs in Eastern Jilin: A Case Study of Niligou Reservoir

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Asian Agricultural Research 2024年第1期16卷 17-21页

作者： Meihua HUANG Jing WANG Yinglin XIE chunsheng wei Xin TIAN Lunwen WANG Jilin Provincial Bureau of Hydrology and Water Resources(Jilin Provincial Water Environment Monitoring Center) Changchun 130022China Changchun Xinlicheng Reservoir Management Center Changchun 130000China

Niligou Reservoir,a typical reservoir in the eastern region of Jilin Province,is subordinate to Niligou River,which is located in the Changbai Mountains in eastern Jilin,with abundant plant and animal resources and well protected biodiversity in the basin,but there are also some related problems such as fragile ecosystem of forest *** paper carried out a health assessment of Niligou River,including water quality monitoring,aquatic organism monitoring,and riparian zone *** to the requirements of the Technical Guidelines for River and Lake Health Assessment,13 assessment indexes were selected to build a river and lake health assessment index *** sorting and analyzing the monitoring and investigation data,we got a clear picture of the ecological environment status and existing problems of Niligou *** on the actual situation of Niligou River,we evaluated the hydrologic integrity,chemical integrity,morphological and structural integrity,biological integrity and sustainability of social service function,and put forward corresponding countermeasures according to the re-sults,in order to provide a technical support for the health treatment of rivers and lakes in Jilin Province.

关键词： Eastern Jilin Niligou Reservoir Health assessment

Spatiotemporal Variation Characteristics of Water Quality in the Yinma River

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Meteorological and Environmental Research 2023年第6期14卷 64-68页

作者： Shukun JIANG Jing WANG Yinglin XIE chunsheng wei Xin TIAN Lunwen WANG Jilin Provincial Bureau of Hydrology and Water Resources(Jilin Provincial Water Environment Monitoring Center) Changchun 130022China Changchun Xinlicheng Reservoir Management Center Changchun 130000China

As an important river in the central part of Jilin Province, the Yinma River plays a crucial role in the daily lives of the people in Jilin Province. In this paper, 15 cross sections were selected in the Yinma River basin. Based on the water quality monitoring data from 2012 to 2021, referring to the Environmental Quality Standards for Surface Water (GB 3838-2002) and historical monitoring data of the river, dissolved oxygen (DO), five-day biochemical oxygen demand (BOD 5), permanganate index (COD Mn ), chemical oxygen demand (COD), ammonia nitrogen (NH 4-N), total phosphorus (TP), and total nitrogen (TN) were determined as 7 evaluation indicators, and the water quality of 15 cross sections in the Yinma River basin was comprehensively evaluated. A characteristic analysis was conducted on the water quality of the Yinma River, and its pollution sources were identified. Based on the conclusions, constructive control measures were proposed.

关键词： Yinma River Water quality Variation characteristics

中国东部A型花岗岩形成时代及物质来源的Nd-Sr-O同位素地球化学制约

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岩石学报 2001年第1期17卷 95-111页

作者：魏春生郑永飞赵子福中国科学技术大学地球与空间科学系化学地球动力学研究实验室合肥230026

对中国东部 A型花岗岩有代表性的碾子山、山海关、崂山、苏州以及魁岐岩体的 Nd- Sr- O同位素地球化学组成进行了系统研究。经过筛选的全岩 Rb- Sr等时线拟合结果表明 ,基本未遭受岩浆期后大气降水交换的苏州和魁岐 Rb- Sr等时线年龄分... 详细信息

对中国东部 A型花岗岩有代表性的碾子山、山海关、崂山、苏州以及魁岐岩体的 Nd- Sr- O同位素地球化学组成进行了系统研究。经过筛选的全岩 Rb- Sr等时线拟合结果表明 ,基本未遭受岩浆期后大气降水交换的苏州和魁岐 Rb- Sr等时线年龄分别是 10 8± 10 Ma和 10 9± 5 Ma,它们代表岩浆冷却结晶时代。其它遭受热液蚀变较为显著的碾子山、山海关以及崂山岩体 Rb- Sr等时线年龄的地质意义不明确。全岩 εNd(t)、(87Sr/ 86Sr) 0 以及锆石 δ1 8O综合示踪研究表明 ,中国东部 A型花岗岩可能起源于曾经历过高温海水热液交换的再循环下部俯冲洋壳的部分熔融。模型计算结果表明 ,碾子山、山海关以及崂山等岩体所表现出的 εNd(t) - δ1 8O脱耦变化与大洋沉积物析出流体与下覆辉长岩洋壳之间不同程度的交代有关。在此基础上 ,提出了中国东部 A型花岗岩统一的成因模式。

关键词： A型花岗岩同位素地球化学形成时代物质来源交代作用大气降水成因模式岩浆

Spatial-temporal Variation Characteristics of Water Quality in the Lower Reaches of the Nenjiang River

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Meteorological and Environmental Research 2024年第1期15卷 67-71页

作者： Xiangzhe MENG Jing WANG Yinglin XIE Fei PENG chunsheng wei Xin TIAN Lunwen WANG Jilin Bureau of Hydrology and Water Resources(Jilin Water Environment Monitoring Center) Changchun 130022China Information Center of Songliao Basin Committee of the Ministry of Water Resources Changchun 130022China Changchun Xinlicheng Reservoir Management Center Changchun 130000China

As an important river in the western part of Jilin Province,the lower reach of the Nenjiang River is an important wetland water source conservation area in Jilin *** the watershed,it governs the Momoge Wetland,the Xianghai Wetland,and the Danjiang Wetland in Jilin *** main problem in the lower reaches of the Nenjiang River is the uneven distribution of water resources in time and space,and the intensification of land *** County and Da an City in the Nenjiang River Basin have sufficient surface water resources,with surface water as the drinking water *** City and Tongyu County have scarce surface water resources,and both use groundwater as their domestic water *** main polluted section in the basin is the Xianghai Reservoir,and the annual water quality evaluation is Class ***,the water quality of the Tao er River,the main stream of the Nenjiang River,is significantly better than that of the Xianghai *** order to better study the water environmental pollution situation in the Nenjiang River basin,monitoring data from five sections of non seasonal rivers in the basin from 2012 to 2021 were selected for studying water *** in-depth exploration of the water pollution status and river water quality change trends in the Nenjiang River basin is of great significance for future rural development,agricultural pattern transformation,and the promotion of water ecological civilization construction.

关键词： Lower reaches of the Nenjiang River Water quality Spatial-temporal variation

国际音标和a:的选择对声学测试参数的影响

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临床耳鼻咽喉科杂志 1999年第3期13卷 102-103页

作者：魏春生陈锋王薇上海医科大学眼耳鼻喉科医院耳鼻咽喉科上海200031

目的：探讨国际音标元音和a：的选择对声学测试参数的影响。方法：53例喉病患者，分别发元音和a：，进行声学分析，测试基频（Fo）、基频微扰（Jitter）、幅度微扰（Shimmer）及声门噪声能量（NNE）几个参数。结果：两组元音间，Fo、Jit... 详细信息

目的：探讨国际音标元音和a：的选择对声学测试参数的影响。方法：53例喉病患者，分别发元音和a：，进行声学分析，测试基频（Fo）、基频微扰（Jitter）、幅度微扰（Shimmer）及声门噪声能量（NNE）几个参数。结果：两组元音间，Fo、Jitter、Shimmer无显著性差异（均P＞0．05）；但受试者发a：音时的NNE值明显低于音，两音间差异呈极显著性（P＜0．01）。结论：元音不同，声门闭合度存在差异，进而影响声学测试的参数。

关键词：元音喉疾病声学测试参数国际音标

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苏州A型花岗岩氢氧同位素地球化学研究

岩石学报 1999年第2期15卷 224-236页

作者：魏春生郑永飞赵子福中国科学技术大学地球与空间科学系化学地球动力学研究实验室

对苏州Ａ型花岗岩氢氧同位素组成进行了系统深入的研究，其全岩δ１８Ｏ值为＋３．５‰～＋９．２‰，全岩δＤ值在－８１‰～－５９‰之间变化。主要造岩矿物对保持氧同位素平衡分馏的样品，其Ｄ亏损主要受单阶段岩浆去气机理的制约。... 详细信息

对苏州Ａ型花岗岩氢氧同位素组成进行了系统深入的研究，其全岩δ１８Ｏ值为＋３．５‰～＋９．２‰，全岩δＤ值在－８１‰～－５９‰之间变化。主要造岩矿物对保持氧同位素平衡分馏的样品，其Ｄ亏损主要受单阶段岩浆去气机理的制约。部分全岩样品表现出不同程度Ｄ－１８Ｏ同步亏损，这种亏损要受岩浆期后固相线下与外来渗透大气降水之间进行同位素交换机理的制约。石英δ１８Ｏ值基本正常，石英与碱性长石之间氧同位素不平衡分馏特征表明，苏州Ａ型花岗岩整体上起源于亏损１８Ｏ源区物质通过地球动力学再循环产生低δ１８Ｏ岩浆的可能性不大。根据氢氧同位素实测值和理论模型计算结果，推测苏州Ａ型花岗岩浆δＤ和δ１８Ｏ初始值分别为－５０±５‰和７．５±１．０‰，这排除了岩浆起源于曾经历过化学风化循环的地壳上部岩石的可能性。

关键词：稳定同位素 A型花岗岩氢氧同位素花岗岩

大别造山带天柱山燕山期中酸性岩浆岩元素和同位素地球化学研究

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岩石学报 2005年第3期21卷 607-622页

作者：徐小军赵子福郑永飞魏春生中国科学院壳幔物质与环境重点实验室

大别-苏鲁造山带中生代岩浆岩的物质来源和成因机制,是大陆碰撞造山带研究的热点和前沿问题之一。本文通过对大别造山带天柱山燕山期中酸性岩进行全岩主量和微量元素以及放射成因同位素、单矿物氧同位素分析,指示这些碰撞后岩浆岩是俯... 详细信息

大别-苏鲁造山带中生代岩浆岩的物质来源和成因机制,是大陆碰撞造山带研究的热点和前沿问题之一。本文通过对大别造山带天柱山燕山期中酸性岩进行全岩主量和微量元素以及放射成因同位素、单矿物氧同位素分析,指示这些碰撞后岩浆岩是俯冲陆壳物质再循环的产物。研究发现,这些中酸性岩表现出明显的轻稀土富集、高场强元素Nb、Ta和Ti负异常以及Pb正异常。它们都具有较高的Sr同位素初始比值(0．7062-0．7083)和较低的εNd(t)值(-17．1--19．7),与北大别杂岩的变化范围一致。单矿物氧同位素变化范围较大(石英:7．48-9．16‰,钾长石:3．76-7．80‰,斜长石:2．06- 6．96‰,锆石:4．16-5．83‰),大多数样品锆石具有与正常地慢锆石(5．3±0．3‰)一致的δ18O值。大多数样品的石英-锆石之间达到并保存了岩浆结晶时的氧同位素平衡分馏,而其它矿物(如钾长石、斜长石、黑云母和角闪石)与锆石之间大多表现为明显的氧同位素不平衡分馏,表明它们受到了岩浆期后亚固相水-岩相互作用的扰动。元素、Sr-Nd同位素和锆石氧同位素特征表明,大别山中生代中性岩可能是由加厚的扬子板块基性下地壳脱水部分熔融并经结晶分异形成的,花岗岩是由化学组成类似于北大别TTG片麻岩的中性下地壳脱水部分熔融形成的。

关键词：中酸性岩氧同位素锆石中生代大别山