共查询到20条相似文献，搜索用时 906 毫秒
1.
弧面分度凸轮机构的分析与设计 总被引：2，自引：0，他引：2
傅燕鸣 《上海大学学报(英文版)》2000,4(1):54-59
1 Ｉｎｔｒｏｄｕｃｔｉｏｎ Ｔｈｅｇｌｏｂｏｉｄａｌｉｎｄｅｘｉｎｇｃａｍｍｅｃｈａｎｉｓｍ(Ｆｉｇ.1)ｉｓｃｏｍｐｏｓｅｄｍａｉｎｌｙｏｆａｄｒｉｖｅｎｒｏｔａｔｉｎｇｄｉｓｋ1,ａｄｒｉｖｉｎｇｇｌｏｂｏｉｄａｌｃａｍ2ａｎｄａｆｒａｍｅ.Ｉｔｉｓａｍｏｄｅｒｎｉｎｔｅｒｍｉｔｔｅｎｔｉｎｄｅｘｉｎｇｓｔｅｐｐｉｎｇｄｅｖｉｃｅａｎｄｉｓｗｉｄｅｌｙｕｓｅｄｉｎｔｈｅｈｉｇｈｓｐｅｅｄｍｅｃｈａｎｉｃａｌｅｑｕｉｐｍｅｎｔｏｆｌｉｇｈｔｉｎｄｕｓｔｒｙ,ｅｌｅｃｔｒｏｎｉｃｉｎｄｕｓｔｒｙａｎｄｓ… 相似文献
2.
ＩＮＴＲＯＤＵＣＴＩＯＮＨｅｔｅｒｏｄｉｎｕｃｌｅａｒｃｏｍｐｌｅｘｅｓａｒｅｏｆｇｒｅａｔｉｍ ｐｏｒｔａｎｃｅｆｏｒｔｈｅｓｔｕｄｙｏｆｔｈｅｓｙｎｅｒｇｉｓｔｉｃｅｆｆｅｃｔｓｆｏｕｎｄｉｎｂｉｍｅｔａｌｌｉｃｃａｔａｌｙｓｉｓ (Ａｄａｍｓ,1 988;Ｒｅｄｄｙｅｔａｌ.,1 989;Ｚｈｅｎｇｅｔａｌ.,1 989;Ｗｅｒｎｅｒｅｔａｌ.,1 992 ) ,ｗｈｉｃｈｉｎｄｉｃａｔｅｄｄｉｓｔｉｎｃ ｔｉｖｅｅｌｅｃｔｒｏｎｉｃ ,ｅｌｅｃｔｒｏｃｈｅｍｉｃａｌａｎｄｍａｇｎｅｔｉｃｐｒｏｐｅｒｔｉｅｓａｒｉｓｉｎｇｆｒｏ… 相似文献
3.
ＩＮＴＲＯＤＵＣＴＩＯＮＣ2 ｃｈｉｒａｌ 1 ,1’ ｂｉ 2 ｎａｐｈｔｈｏｌ 1ｏｃｃｕｐｉｅｓａｐｏｓｉｔｉｏｎｏｆｐｒｉｍｅｉｍｐｏｒｔａｎｃｅｉｎａｗｉｄｅｒａｎｇｅｏｆｅｎａｎｔｉｏｓｅｌｅｃｔｉｖｅｒｅａｃｔｉｏｎｓ.Ｉｔｐｌａｙｓａｎｉｍｐｏｒｔａｎｔｒｏｌｅｉｎａｓｙｍｍｅｔｒｉｃｓｙｎｔｈｅｓｅｓｗｉｔｈｖｅｒｙｈｉｇｈｅｎ ａｎｔｉｏｍｅｒｉｃｐｕｒｉｔｙ.Ｒｅｌｅｖａｎｔｌｉｔｅｒａｔｕｒｅｒｅｐｏｒｔｓｓｅｖｅｒａｌｍｅｔｈｏｄｓｆｏｒｔｈｅｐｒｅｐａｒａｔｉｏｎｏｆｏｐｔｉｃａｌ… 相似文献
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董传华 《上海大学学报(英文版)》2000,4(2):112-115
1 Ｉｎｔｒｏｄｕｃｔｉｏｎ Ｉｎｑｕａｎｔｕｍｏｐｔｉｃｓ ,ｓｏｍｅｎｏｎ ｃｌａｓｓｉｃａｌｓｔａｔｅｓｏｆｌｉｇｈｔｈａｖｅｂｅｅｎｓｔｕｄｉｅｄｒｅｃｅｎｔｌｙ .Ｉｎｐａｒｔｉｃｕｌａｒ ,ｔｈｏｓｅｏｐｔｉｃａｌｓｕｐｅｒｐｏｓｉｔｉｏｎｓｔａｔｅｓ ,ｗｈｉｃｈａｒｅｂａｓｅｄｏｎｔｈｅｐｒｉｎｃｉｐｌｅｏｆｑｕａｎｔｕｍｓｕｐｅｒｐｏｓｉｔｉｏｎ ,ｇｉｖｅｒｉｓｅｔｏｖａｒｉｏｕｓｎｏｎ ｃｌａｓｓｉｃａｌｐｒｏｐｅｒｔｉｅｓ.Ｎｕｍｂｅｒｓｕｐｅｒｐｏｓｉｔｉｏｎｓｔａｔｅｓ[1] ａｒｅｐ… 相似文献
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1 Ｉｎｔｒｏｄｕｃｔｉｏｎ Ｔｈｅｉｎｔｅｒｅｓｔｉｎｖｅｒｙｌｏｗｂｉｔ ｒａｔｅｖｉｄｅｏｃｏｄｉｎｇｈａｓｉｎ ｃｒｅａｓｅｄｃｏｎｓｉｄｅｒａｂｌｙｗｉｔｈｔｈｅｃｒｅａｔｉｏｎｏｆｎｅｗｓｅｒｖｉｃｅｓａｎｄａｐｐｌｉｃａｔｉｏｎｓｒｅｑｕｉｒｉｎｇｔｈｉｓｃｌａｓｓｏｆｂｉｔｒａｔｅｓｉｎｔｈｅｉｒｆｕｎｃｔｉｏｎ .Ｗｉｔｈｔｈｉｓｔｒｅｎｄ ,ｏｂｊｅｃｔ ｏｒｉｅｎｔｅｄｖｉｄｅｏｃｏｄｉｎｇｗａｓｆｉｒｓｔｐｒｏｐｏｓｅｄｂｙＭｕｓｍａｎｎｅｔａｌ.ｉｎ 1989[1 ],ａｎｄｈａｓｂｅｅ… 相似文献
6.
CHANGES OF OXIDATIVE AND LIPOPEROXIDATIVE METABOLISM IN PATIENTS WITH ACUTE VIRAL MYOCARDITIS 总被引：6，自引：0，他引：6
ＩＮＴＲＯＤＵＣＴＩＯＮＭｙｏｃａｒｄｉｔｉｓｉｓａｃｏｍｍｏｎｃａｒｄｉａｃｄｉｓｅａｓｅ.Ｔｈｅｒｅａｒｅｒｅｐｏｒｔｓｔｈａｔａｃｔｉｖｉｔｉｅｓｏｆｓｕｐｅｒｏｘｉｄｅｄｉｓ ｍｕｔａｓｅａｎｄｃａｔａｌａｓｅｉｎｂｌｏｏｄｏｆｖｉｒａｌｍｙｏｃａｒｄｉｔｉｓｐａｔｉｅｎｔｓａｎｄａｎｉｍａｌｓｐｒｏｄｕｃｅｄｓｏｍｅｃｈａｎｇｅｓ,ａｎｄａｇｇｒａｖａｔｅｄｒｅａｃｔｉｏｎｓｏｆｆｒｅｅｒａｄｉｃａｌｓｉｎｔｈｅｉｒｂｏｄｉｅｓ (Ｈｉｒａｏｋａｅｔａｌ.,1 992 ,1 993 ,1 995;Ｓｕｚｕｋｉｅ… 相似文献
7.
XUE Yu DONG Li yun DAI Shi qiang Shanghai Institute of Applied Mathematics Mechanics Shanghai University Shanghai China 《上海大学学报(英文版)》2001,(2)
1 Ｉｎｔｒｏｄｕｃｔｉｏｎ Ｉｎｒｅｃｅｎｔｙｅａｒｓ ,ｔｈｅｔｈｅｏｒｙｏｆｔｒａｆｆｉｃｆｌｏｗｈａｓｂｅｅｎｅｘｔｅｎｓｉｖｅｌｙｄｅｖｅｌｏｐｅｄｄｕｅｔｏｔｈｅｃｏｏｐｅｒａｔｉｖｅｗｏｒｋｏｆｓｃｉｅｎｔｉｓｔｓａｎｄｅｎｇｉｎｅｅｒｓｉｎｖａｒｉｏｕｓｆｉｅｌｄｓｓｕｃｈａｓｐｈｙｓｉｃｓ,ｍｅｃｈａｎｉｃｓ,ａｐｐｌｉｅｄｍａｔｈｅｍａｔｉｃｓ,ｅｔｃ .(ｆｏｒｒｅｖｉｅｗｓ,ｃｆ.[1]) .Ａｖａｒｉｅｔｙｏｆｔｒａｆｆｉｃｍｏｄｅｌｓｈａｖｅｂｅｅｎｐｒｏｐｏｓｅｄ ,ｆｏｒｉｎｓｔａ… 相似文献
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1 Ｉｎｔｒｏｄｕｃｔｉｏｎ Ｔｈｅｐａｒａｌｌｅｌｄｅｃｏｄｉｎｇｍｅｔｈｏｄｏｆａｐａｒａｌｌｅｌｃｏｎｃａｔｅｎａ ｔｉｏｎｏｆｍｕｌｔｉｐｌｅｃｏｄｅｓｉｓｐｒｅｓｅｎｔｅｄｂｙＤｉｖｓａｌａｒ[1] .Ｔｈｅｉｔｅｒａｔｉｖｅｇａｉｎｏｆｔｈｉｓｍｅｔｈｏｄｎｅｅｄｓｔｏｂｅｃａｌｃｕｌａｔｅｄｂｙｕｓｉｎｇｓｉｍｕｌａｔｅｄａｎｎｅａｌｉｎｇ .Ｗｅｐｒｅｓｅｎｔａｎｅｗｓｅｒｉａｌｄｅ ｃｏｄｉｎｇｍｅｔｈｏｄｗｈｏｓｅｉｔｅｒａｔｉｖｅｇａｉｎｉｓｏｎｅｓｈｏｗｎｉｎＦｉｇ .1.Ｗｅｗｉｌｌ… 相似文献
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1 Ｉｎｔｒｏｄｕｃｔｉｏｎ Ｔｈｅｆｕｎｄａｍｅｎｔａｌｐｈｙｓｉｃａｌｍｅｔａｌｌｕｒｇｙｏｆｔｈｅｒｍｏｍｅｃｈａｎｉｃａｌｐｒｏｃｅｓｓｉｎｇ(ＴＭＰ)ｈａｓｂｅｃｏｍｅｍｕｃｈｂｅｔｔｅｒｕｎｄｅｒｓｔｏｏｄｏｖｅｒｔｈｅｌａｓｔｔｗｏｄｅｃａｄｅｓ[1～8].ＩｔｉｓｗｅｌｌｃｏｍｍｏｎｌｙｒｅｃｏｇｎｉｚｅｄｔｈａｔｔｈｅｍｉｎｕｔｅａｄｄｉｔｉｏｎｏｆｓｔｒｏｎｇｃａｒｂｏｎｉｔｒｉｄｅｏｒｎｉｔｒｉｄｅｆｏｒｍｉｎｇｅｌｅｍｅｎｔｓｓｕｃｈａｓＮｂ,ＴｉａｎｄＶｔａｋｅｓｖｅｒｙｉｍｐ… 相似文献
10.
1 Ｉｎｔｒｏｄｕｃｔｉｏｎ Ｇｅｎｅｒａｔｉｎｇｌｏｃａｌｉｚｅｄｃｏｈｅｒｅｎｔｓｔｒｕｃｔｕｒｅｓｏｆｔｈｅ (2 +1) ｄｉｍｅｎｓｉｏｎａｌｎｏｎｌｉｎｅａｒｅｖｏｌｕｔｉｏｎｅｑｕａｔｉｏｎｓｈａｓｃｏｎ ｔｉｎｕｅｄｔｏｂｅａｃｈａｌｌｅｎｇｉｎｇｃｏｎｔｅｍｐｏｒａｒｙｐｒｏｂｌｅｍａｆｔｅｒｔｈｅａｄｖｅｎｔｏｆｄｒｏｍｉｏｎｓｗｈｉｃｈａｒｅｅｘｐｏｎｅｎｔｉａｌｌｙｌｏｃａｌ ｉｚｅｄｓｔｒｕｃｔｕｒｅｓｄｒｉｖｅｎｂｙｓｏｍｅｓｔｒａｉｇｈｔｌｉｎｅｇｈｏｓｔｓｏｌｉ ｔｏｎｓｕ… 相似文献
11.
粒子穿越方势阱时的反射相位时间研究 总被引：1，自引：0，他引：1
为了更深入地了解相位时间的物理意义,讨论了量子粒子穿越一维方势阱时的反射相位时间计算得出的反射相位时间和透射相位时间数值相等并在一定条件下出现负值现象认为,量子力学中粒子穿越方势阱时,不论粒子最终是被反射或透过势阱,这 过程可只用一个物理量—量子力学中的能速来正确描述 相似文献
12.
LI Chun-fang HUANG Xin-hua YAN Ai-min Department of physics College of Sciences Shanghai University Shanghai China 《上海大学学报(英文版)》2000,(Z1)
1 IntroductionTUnneling effect is one of the most strildngcharacterishcs of qUanthe mechanics. A lOt ofexpert-ments have been made to stUdy tUnneling effect.There are also many boortant devices based on~ling effeCt, such as Esaki ~el diode, JOsephsonjunction and scalming tUnneling microscOPes. But howlong does it take a particle tO tUImel through a potentialbaaer? This queStion has Provoked much colltroverSy['],ever since the Phenomenon of tUnneling was firstpredict6d in qu~ mechanics… 相似文献
13.
为了更深入地了解相位时间的物理意义，讨论了量子粒子穿越一维方势阱时的反射相位时间.计算得出的反射相位时间和透
射相位时间数值相等并在一定条件下出现负值现象.认为，量子力学中粒子穿越方势阱时，不论粒子最终是被反射或透过势阱，这
一过程可只用一个物理量—量子力学中的能速来正确描述. 相似文献
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How to realize a negative refractive index material at the atomic level in an optical frequency range? 总被引：1，自引：0，他引：1
INTRODUCTION Recently, a new type of artificial compositematerials (so-called left-handed media or negativerefractive index media) whose electric permittivityand magnetic permeability are simultaneouslynegative (corresponding to a negative refractiveindex) over a certain frequency band has attractedconsiderable attention due to its extraordinaryelectromagnetic properties (Pendry, 2000; Shelbyet al., 2001; Grbic and Eleftheriades, 2004; Chen eal., 2004). The negative refractive inde… 相似文献
18.
The theoretical mechanism for realizing a negative refractive index material in an optical frequency range with an atomic gas system of electromagnetically induced transparency(EIT)is studied. It is shown that under certain conditions such a dense gas can exhibit simultaneously negative permittivity and negative permeability,and negligibly small loss. 相似文献
19.
The phase time of p-polarized light pulses passing through a glass plate is investigated. We do this by converting the problem
into a 1-dimensional quantum-mechanical counterpart, a potential well with a position-dependent effective mass. We find that the phase time
and the lateral shift have the negative characteristics. 相似文献
20.
Oscillations of the spin-polarized conductance controlled by a uniform magnetic field in a modified Aharonov-Bohm ring is studied with use of one-dimensional quantum wave guide.Its expression at zero temperature is obtained as a function of the flux penetrating the ring and the magnetic field.It has been found that there are two kinds of polarized conductance extremas for a given Fermienergy.As Zeemann energy of spin-polarized electron in the stub is varied.one kind of extrema exhibits continuous phase shift .However,another is locked at particular values of phase shift and it can only change abrouptly from a maxima to a minima when Zeemann crosses the level of the bound state of isolated stub.This is a different mehanism for abrupt change phase of conductance osillations. 相似文献