نتایج جستجو برای: hook

تعداد نتایج: 5849  

Journal: :Electr. J. Comb. 2011
Matjaz Konvalinka

Recently, a simple proof of the hook length formula was given via the branching rule. In this paper, we extend the results to shifted tableaux. We give a bijective proof of the branching rule for the hook lengths for shifted tableaux; present variants of this rule, including weighted versions; and make the first tentative steps toward a bijective proof of the hook length formula for d-complete ...

Journal: :J. Comb. Theory, Ser. A 2011
Ionut Ciocan-Fontanine Matjaz Konvalinka Igor Pak

Abstract. Based on the ideas in [CKP], we introduce the weighted analogue of the branching rule for the classical hook length formula, and give two proofs of this result. The first proof is completely bijective, and in a special case gives a new short combinatorial proof of the hook length formula. Our second proof is probabilistic, generalizing the (usual) hook walk proof of Green-Nijenhuis-Wi...

2011
Simon HM Wong G Ho SHM Wong LC Cheng

Percutaneous preoperative localisation of breast tumours using a hook-wire needle is a standard radiological practice. The use of a hook-wire in preoperative localisation of pulmonary nodules under computed tomography guidance has also been described in overseas publications. We describe herein our local experience with the use of a hook-wire needle that is primarily used in breast tumours in p...

2017
Yuewei Wang Xiaomei Guan Haofu Wang

Common obstacles to successful retrieval of retrievable inferior vena cave filter include embedded filter hook and severe tilt of the filter. We described a modified wire-loop snare technique using self-made fishhook-like pigtail catheter and 11-F-long sheath to retrieve a severe tilted filter with embedded hook successfully. The modified wire-loop snare technique is simple and effective requir...

Journal: :The Iowa Review 1973

Journal: :Journal of Algebra 2002

Journal: :Science 1966

Journal: :Journal of the American Medical Association 1916

Journal: :The Journal of Cell Biology 1984
J R McIntosh U Euteneuer

The structural polarity of cellular microtubules can be visualized in situ by lysing cells in special buffers containing tubulin. Under these conditions, the tubulin polymerizes to form curved sheets which attach to the walls of the endogenous microtubules. When such decorated microtubules are cut in cross section and viewed in the electron microscope, they appear to bear hooks curving clockwis...

2016
Matthieu Hanauer Jean Yannis Perentes Thorsten Krueger Hans-Beat Ris Pierre Bize Sabine Schmidt Michel Gonzalez

BACKGROUND Video-assisted thoracic surgery (VATS) is currently performed to diagnose and treat solitary pulmonary nodules (SPN). However, the intra-operative identification of deep nodules can be challenging with VATS as the lung is difficult to palpate. The aim of the study was to report the utility and the results of pre-operative computed tomography (CT)-guided hook wire localization of SPN....

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