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一种可能的类热态──双温态 被引量:1
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作者 赵峥 朱建阳 +1 位作者 王永成 B.Misra 《北京师范大学学报(自然科学版)》 CAS CSCD 1995年第2期269-270,共2页
一种可能的类热态──双温态赵峥,朱建阳,王永成,B.Misra(北京师范大学物理学系,100875,北京;抚州师范专科学校物理学系,344000,江西抚州;SchoolofPhysicalSciences,Jawah... 一种可能的类热态──双温态赵峥,朱建阳,王永成,B.Misra(北京师范大学物理学系,100875,北京;抚州师范专科学校物理学系,344000,江西抚州;SchoolofPhysicalSciences,JawaharlalNehruUnivers... 展开更多
关键词 Bogolubov变换 Rindler观测者 双温 类热态
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改进烟花算法计算热态轴类锻件内圆柱体空洞缺陷深度 被引量:1
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作者 沈久利 张玉存 《中国机械工程》 EI CAS CSCD 北大核心 2023年第4期387-394,共8页
针对高温状态下热态轴类锻件内部产生的圆柱体空洞缺陷测量困难的问题,提出基于改进的烟花算法检测空洞深度方法。根据锻件的内部微元模型和瞬态温度场传热微分方程推导圆柱体空洞温度场与空洞半径关系的微分方程,利用分离变量法求解;... 针对高温状态下热态轴类锻件内部产生的圆柱体空洞缺陷测量困难的问题,提出基于改进的烟花算法检测空洞深度方法。根据锻件的内部微元模型和瞬态温度场传热微分方程推导圆柱体空洞温度场与空洞半径关系的微分方程,利用分离变量法求解;对烟花算法进行改进,以提高圆柱体空洞深度检测精度;构造缺陷深度的目标函数进行测试,得到最优解的相对误差为2.5%。最后,运用所提方法、PSO算法和传统的烟花算法于同一深度的空洞分别进行检测,验证所提方法的可行性。 展开更多
关键词 锻件 圆柱体空洞 分离变量法 烟花算法
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热态轴类含空洞锻件内部温度场分布 被引量:2
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作者 张玉存 张雷强 付献斌 《中国机械工程》 EI CAS CSCD 北大核心 2015年第19期2672-2676,共5页
热态轴类锻件内部温度场分布特征对锻件内部空洞检测起着重大作用。针对该问题,在传热学理论的基础上建立了热态轴类含空洞锻件的二维非稳态传热模型。首先利用集总参数法获得该模型的内部边界条件。然后通过红外热像仪采集得到该模型... 热态轴类锻件内部温度场分布特征对锻件内部空洞检测起着重大作用。针对该问题,在传热学理论的基础上建立了热态轴类含空洞锻件的二维非稳态传热模型。首先利用集总参数法获得该模型的内部边界条件。然后通过红外热像仪采集得到该模型的初始温度条件,结合分离变量法求解该模型,从而获得含空洞锻件的内部温度场分布。最后通过实验分析了不同空洞尺寸条件下锻件内部温度场的分布特征。 展开更多
关键词 空洞检测 二维非稳 内部温度场 锻件
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Goethite Morphologies of Some Soils in South of Central China 被引量:2
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作者 LIUFAN XUFENG-LIN 等 《Pedosphere》 SCIE CAS CSCD 1994年第3期193-200,共8页
The morphologies of goethites in latosol, red soils, yellow-brown soil and the paddy soils developed from red soils were studied in comparison with the morphology of synthetic goethite by means of the X-ray distractio... The morphologies of goethites in latosol, red soils, yellow-brown soil and the paddy soils developed from red soils were studied in comparison with the morphology of synthetic goethite by means of the X-ray distraction, transmission electron microscopy and energy dispersive X-ray analysis. The synthetic goethite displayed acicular particles elongated in the c-direction. The goethites in the latosol, red soils and yellowbrown soil were platy particles stretched in two directions or isodimensional particles, and those in the paddy soils from red soils were acicular, short columnar, platy or isodimensional particles. Various morphologies of the goethites probably suggested their different dominant crystal faces, surface charge distribution and surface adsorption characteristics. 展开更多
关键词 goethites MORPHOLOGY SOILS surface adsorption surface charge
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Quantum discord of thermal states of a spin chain with Calogero-Moser type interaction 被引量:2
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作者 MA XiaoSan QIAO Ying +1 位作者 ZHAO GuangXing WANG AnMin 《Science China Chemistry》 SCIE EI CAS 2013年第3期600-605,共6页
In this paper,we have investigated the effect of Calogero-Moser type interaction on the quantum discord of thermal states of a spin chain.Our results imply that the quantum discord depends on the relative distance bet... In this paper,we have investigated the effect of Calogero-Moser type interaction on the quantum discord of thermal states of a spin chain.Our results imply that the quantum discord depends on the relative distance between the spins,the external magnetic field,and the temperature.By a comparison between the quantum discord and the entanglement of formation,the quantum discord is more robust than the entanglement of formation in the sense that the latter takes a zero value in a large range of the parameters,while the former takes a nonzero value. 展开更多
关键词 quantum discord entanglement of formation Calogero-Moser interactions
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Classification and reduction manipulation of fractures in Chinese traditional Mongolian osteopathy 被引量:7
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作者 Mei Wang Zhanhong Bao Namula Zhao 《Journal of Traditional Chinese Medicine》 SCIE CAS CSCD 2014年第1期122-126,共5页
OBJECTIVE:To explore the concept of classification and reduction manipulation of fractures in Chinese traditional Mongolian osteopathy.METHODS:Based on the linear classification of fractures in Chinese traditional Mon... OBJECTIVE:To explore the concept of classification and reduction manipulation of fractures in Chinese traditional Mongolian osteopathy.METHODS:Based on the linear classification of fractures in Chinese traditional Mongolian osteopathy and the practice of reduction manipulation,a dynamic classification and reduction manipulation concept of fractures was established with the use of modern biomechanical principles and methods.RESULTS:We classified the linear classification and reduction manipulation of fractures in Chinese traditional Mongolian osteopathy based on the achievement of fracture line and used the cause of the formation of the fracture line for our dynamic classification and reduction manipulation of fractures concept.CONCLUSION:The etiology of the formation of fracture lines can be used to decrease diagnostic error,increase therapeutic effects of manipulation,and further provide a new concept and method for the development of the reduction concept of fractures. 展开更多
关键词 FRACTURES BONE Traditional Mongolian osteopathy Linear classification Dynamic classifica-tion Reduction manipulation
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