Higher bottom and bottom-strange mesons

Motivated by the recent observation of the orbital excitation $B(5970)$ by CDF collaboration, we have performed a systematical study of the mass spectrum and strong decay patterns of the higher $B$ and $B_s$ mesons. Hopefully the present investigation may provide valuable clues to further experimental exploration of these intriguing excited heavy mesons.Comment: 13 pages, 11 figures, 10 tables. More discussions and references added. Accepted by Phys. Rev.

基于混沌理论探讨太极拳运动对高血压的防治作用

In this paper,review and analysis of  the fluctuations of blood pressure and pathogenesis of hypertension were presented a review and analysed based on chaos theory. At the same time, we interpreted philosophically the special concept of Tai Chi Chuan Exercise. Furthermore, the possible mechanisms of prevention and treatment of Tai Chi Chuan on hypertension was reviewed on the basis of clinical research literature.本文运用混沌理论对血压波动和高血压的发生机制进行了简单的回顾与分析，同时对太极拳运动的特殊理念进行了哲学阐释。在此基础上结合临床研究文献进一步综述了太极拳防治高血压的可能机制

Discussing the generalized model of cerebral infarction based on the perforating artery-neural tissue units

本文对穿支动脉的概念进行了新的认识，并对穿支动脉病的内涵进行了推广，进而提出了以穿支动脉-神经组织单元为脑梗死基本病变单位的医学假设，有助于引发对脑梗死模式分型的新的思考。本文突破常规的思维模式，基于穿支动脉病变单元对经典脑梗死模式分型进行了再解析，将脑梗死模式分为单穿支动脉病、多穿支动脉病、泛穿支动脉病三类。该分型有助于从新的视角认识脑梗死的形成，并有助于将脑梗死影像学模式特征蕴含的信息用于指导脑梗死的病因分型、发病机制的把握和治疗方案的选择。 This paper anatomizes the definition of perforating artery disease, and generalizes the connotation of perforating artery. Then a medical hypothesis is proposed that the perforating artery-neural tissue units can be regarded as basic unit for the formation of cerebral infarction, which contributes to arouse new thinking of cerebral infarction model. This paper breaks through conventional mode of thinking and analyzes the models of cerebral infarction based on the perforating artery-neural tissue units. The models of cerebral infarction were finally classified into three categories: single-perforating artery disease, multi-perforating artery disease and extensive-perforating artery disease. This classification would contribute to understand the formation of cerebral infarction from a new perspective, and to use the characteristics information of cerebral infarction image model to guide the etiology classification of cerebral infarction, pathogenesis understanding and treatment options

发病3h DWI阴性的后循环梗死1例：基底动脉过度弯曲并血栓形成及文献复习

Objective: The role of the basilar artery morphological abnormalities (BAMA) in the pathogenesis of posterior circulation infarction (PCI) was summarized and analyzed based on the main line of the diagnosis and treatment of the basilar artery excessive bending combined with thrombus formation. The experience and lessons in this process was summarized which could provide reference and warning for further clinical diagnosis and treatment.  Methods: This paper described a rare case of DWI-negative PCI 3 hours after onset in a young man as well as its whole process of diagnosis and treatment and the literature of the BAMA was reviewed and summarized.  Results: This patient was diagnosed as basilar artery excessive bending combined with thrombosis by CTA, but eventually died of brain stem failure despite receiving intravenous thrombolytic therapy. Conclusion: BAMA should be fully taken into account in the pathogenesis of PCI. The clinical significance of vascular evaluation in patients with PCI and isolated vertigo should be paid enough attention to and the understanding of the clinical significance of the results of this assessment should be broadened in the clinical practice. 目的 以基底动脉过度弯曲并血栓形成病例的诊断治疗为主线，总结和分析了基底动脉形态异常在后循环梗死发病机制中的作用。总结病例的诊治经验训，为以后的临床诊疗提供一定的借鉴价值和警示意义。方法 本文描述了1例罕见的发病后3h DWI仍未显示病灶的后循环梗死的年轻患者诊断和治疗的全过程，并对基底动脉形态异常的相关文献进行回顾分析和总结。结果 本例患者通过头CTA确诊为基底动脉过度弯曲并血栓形成，虽经静脉溶栓治疗，但最终死于脑干功能衰竭。结论 后循环缺血的发病机制应该将基底动脉形态异常这一因素充分考虑在内。在临床上，对于后循环缺血及孤立性眩晕患者血管评估的临床意义应该给予足够的关注并拓宽对这一评估结果临床意义的认识

A unified approach for exactly solvable potentials in quantum mechanics using shift operators

We present a unified approach for solving and classifying exactly solvable potentials. Our unified approach encompasses many well-known exactly solvable potentials. Moreover, the new approach can be used to search systematically for a new class of solvable potentials.Comment: RevTex, 8 page