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The Effect of Fracture of Ulnar Styloid on rotational Movements of the Forearm after Extraarticular Fractures of Distal Radius

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Surgical Science 2011年第4期2卷 215-218页

作者： Ali Karbalaeikhani Alireza Saied Amirreza Sadeghifar Kerman Neuroscience research center Kerman University of medical sciences Kerman Iran

Introduction: Since distal radius fractures are among the most common fractures encountered in orthopedics and one of their common complications is restriction of rotational movements of the wrist and forearm, iden-tification of factors affecting this loss of motion is of importance. This study was conducted to evaluate the relation between extraarticular distal radius fractures associated with fracture of ulnar styloid and the rota-tional movements of the wrist and forearm. Patients and methods: 47 patients with an extraarticular distal radius fracture were enrolled in a prospective case control study. The patients were visited in regular follow up intervals after treatment and at the final follow up the rotational movements of the forearm were measured. The findings were analyzed with Independent T and Chi-square tests. Findings: Ultimately 23 patients of the group 1 (intact ulnar styloid) and 24 of the group 2 (fractured ulnar styloid) completed the follow up period. At this time supination of the wrist and forearm in group 2 was significantly less than the group 1 (p< 0.001). Conclusion: It seems that the association of an extraarticular distal radius fracture with the fracture of ulnar styloid, at least in short term causes restriction of supination of the forearm, though the mechanism and clinical significance of this finding cannot be easily explained.

关键词： Fracture Distal radius Ulnar Styloid Forearm rotation

The Uniqueness and Approximate Solution of the Positive Solution of the Uniform u0-convex Operator Equation

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数学研究与评论 1986年第2期 155-157页

作者：李国桢 Jiangxi Normal University Nanchang China

M.A.Krasnosel′skii [1] proposed that 'under what conditions does the solution of convex operator equation Ax=x exist and unique?'.Because problem itself is more difficult, its development is quite slow.Lately Guo Da-... 详细信息

关键词： convex Uniform Operator continuity rotation successive itself approximate arbitrary assumption

CORE-MANTLE DIFFERENTIAL MOVEMENT AND GEOMAGNETIC FIELD REVERSAL

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Chinese Science Bulletin 1984年第1期29卷 75-79页

作者：蒋志

Concerning the basic geomagnetic origin, scientists generally consider that the internal dynamo model of the earth is a more reasonable explanation. However,there are different views in discussing the energy sources f... 详细信息

关键词： explanation satisfactory outer angular reversal mantle absolute rotation tidal reversed

FREE DEGREE OF HOMEOMORPHISMS ON NON-ORIENTABLE CLOSED SURFACES

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Chinese Science Bulletin 1983年第9期28卷 1156-1158页

作者：王诗宬 Peking Universityet M be a manifold. If there exists a positive integer m such that (i) for any homeomorphism g on M at least one of the iterates g g~2… g~m has a fixed point (ⅱ) there exists a homeomorphism f on M such that f f~2 … f~(m-1) are all fixed-point-free then we say the free degree of homeomorphisms on M is m. If such a

Let M be a manifold. If there exists a positive integer m, such that （i） for any homeomorphism g on M, at least one of the iterates g, g2,…, gm has a fixed point;（ⅱ） there exists a homeomorphism f on M such that... 详细信息

关键词： integer manifold argument andhi automorphism proof rotation lemma Nielsen quotient

STUDY OF ANOMALIES NEAR 75℃ IN LiNbO_(3) BY X-RAY DIFFRACTION

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Chinese Physics Letters 1986年第8期3卷 373-376页

作者：周衡南沈惠敏袁方丘第荣王业宁 Institute of Solid state Physics Nanjing UniversityNanjing

The anomaly of LiNbO3 in the vicinity of 75℃ has been studied by various X-ray diffraction methods.An abrupt change of axial ratio(c/a)was measured,which may be ascribed to alternate rotation of NbO6 octahedron about... 详细信息

关键词： methods. symmetry rotation

NUMERICAL EXPERIMENTS ON EFFECT OF LATENT HEAT ON LARGE-SCALE CIRCULATION

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Chinese Science Bulletin 1988年第7期33卷 587-590页

作者：孙淑清纪立人 Institute of Atmospheric Physics Academia Sinica Beijing

The impact of a large amount of latent heat released during the process of heavy rain on atmospheric motion cannot be overlooked. It has been considered by some investigators as a factor not negligible in the formatio... 详细信息

关键词： latent indispensable negligible heating moist vorticity divergence Plateau northward rotation

Application of Focal Curves to the Evaluation of Conic Diffraction Lines

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Journal of Applied Mathematics and Physics 2015年第11期3卷 1386-1390页

作者： Stefan Enghardt Jürgen Bauch Institut für Werkstoffwissenschaft TU Dresden Dresden Germany

Micro diffraction methods like the Kossel or X-ray rotation tilt techniques generate diffraction patterns consisting of conic sections. Extracting information about lattice parameters, orientation or stresses from those patterns generally requires additional information. As a consequence, it is necessary to make high precision measurements of the pattern center and the detector-sample distance. By modeling the focal curves of a diffraction pattern it is possible to determine these parameters from only a single exposure. The focal curves of the conic sections in the detected image intersect (ideally) at the inspected sample point. This point is also the apex of all diffraction cones. The use of the geometry of the focal curves leads to an improved accuracy for the determination of lattice constants, residual stress and strain tensors by avoiding mechanical frames and their accompanying measurement errors. Therefore, by using this analysis route it is possible to extract three-dimensional crystal information out of a single two-dimensional diffraction pattern.

关键词： Micro Diffraction Kossel X-Ray rotation Tilt Technique EBSD Single-Crystal

ON THE CHANGE OF ENSTROPHY

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Chinese Science Bulletin 1985年第6期30卷 777-780页

作者：伍荣生 Department of Meteorology Nanjing University? INTRODUCTION Similar to energy enstrophy is an important physical quantity. It can be used to represent the strength of rotation of the fluid element in the atmosphere and it is sometimes even more useful than vorticity. Since vorticity is a vector its change

Ⅰ. INTRODUCTION Similar to energy, enstrophy is an important physical quantity. It can be used to represent the strength of rotation of the fluid element in the atmosphere and it is sometimes even more useful than vo... 详细信息

关键词： vorticity sometimes rotation absolute divergent magnitude momentum tensor 一舒 inertia

CONFORMALLY COVARIANT EQUATION OF SECOND RANK SYMMETRIC TENSOR FIELD

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Chinese Science Bulletin 1984年第5期29卷 601-604页

作者：许伯威 Department of Modern Physics Lanzhou University

Many of field equations describing massless particles are covariant under the conformal transformations. Contrary to the popular expectation, not all the field equations of massless particles are conformally covariant. For example, the Fierz-Pauli equation for massless spin-2 particle is practically not conformally covariant. By varying the coefficients of various terms in Fierz-Pauli equation, we derived

关键词： practically expectation invariant Pauli describing eliminate Minkowski satis rotation conformal