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Journal of Materials Science & Technology 2017年第2期33卷 210-214页

作者： Yi Yang canying cai Qibin Yang School of Materials Science and Engineering Xiangtan University Xiangtan 411105 China

In this paper, a modified direct product method of scattering matrix （DPSM） was presented and the cal- culation formulawas derived as follows： φ（z）=∑n1/n!（Mz）nφ（O）and φ（z＋εj）=∑n1/n!（Mεj）nφ（z）,whereM is the scattering matrix of which the dimension can be reduced by ＇Bethe potential method＇ drastically and therefore the calculation speed can be increased tremendously without losing accuracy very much. The results calculated with the DPSM method are in almost exact agreement with those calculated with BW method. However, the calculation speed for the modified DPSM method is approximately three times faster than that for the BW method. Furthermore, the DPSM is suitable for computing all types of ma- trices without requiring symmetry or conjugate symmetry.

关键词： Electron crystallography Image simulation Bethe potential method Matrix diagonalization

Effect of Electron Beam Orientation on Exit Wave Function via Simulation of Electron Dynamic Diffraction

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Journal of Materials Science & Technology 2007年第5期23卷 713-716页

作者： Yanguo WANG Hongrong LIU canying cai Qibing YANG Micro-Nano Technologies Research Center Hunan University Changsha 410082 China Institute of Modern Physics Xiangtan University Xiangtan 411105 China Institute of Physics Chinese Academy of Sciences P.O. Box 603 Beijing 100080 China

Based on the electron dynamic diffraction, phase shift of the exit wave function vs misorientation of the incident electron beam from the exact zone axis has been calculated for the [001] oriented copper. The result shows that the peak of phase shift is the maximum at the atom position as the electron beam along the exact [001] zone axis, and the peak value of phase shift decreases as increases of the misorientation. At small misorientation, i.e. less than 5 degree, change of the phase shift is minimal. The peak value of phase shift decreases significantly when the incident beam deviates form the zone axis over 10 degree and the exit wave has a planar configuration as the misoriention angle arrives -17 degree. The effect of this phase shift characteristics on the information extracted from the hologram has also been considered.

关键词： Electron dynamic diffraction Phase shift Exit wave function Misorientation

Comparison of CMAS corrosion and sintering induced microstructural characteristics of APS thermal barrier coatings

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Journal of Materials Science & Technology 2019年第3期35卷 440-447页

作者： Yiyou Wu Hua Luo canying cai Yanguo Wang Yichun Zhou Li Yang Guangwen Zhou School of Materials Science and Engineering Xiangtan University Key Laboratory of Low Dimensional Materials & Application Technology of Ministry of Education Xiangtan University Department of Mechanical Engineering & Materials Science and Engineering Program State University of New York at Binghamton

The microstructural features of high-temperature sintered and CaO-MgO-Al_2O_3-SiO_2(CMAS) corroded air plasma sprayed Y_2O_3 stabilized ZrO_2(YSZ) thermal barrier coatings(TBCs) under the thermal gradient condition were comparatively studied. As-sprayed YSZ has a lamellar structure and the lamellae are composed of closely aligned columnar crystals. The sintered and the CMAS corroded YSZ coatings maintain the t'-ZrO_2 phase as the as-sprayed YSZ coating. The sintered YSZ remains the lamellar structure with reduced interlamellar gaps and grains coarsening. After the CMAS corrosion, the top layer of the YSZ coating keeps its lamellar structure consisting of some columnar grains with the CMAS infiltration into the intergrain gaps and the formation of striped Zr_2Y_2 O_7. The typical lamellar structure transforms into more equiaxed grains in the middle and bottom layers of the ceramic coating along with significant infiltration of amorphous CMAS and anorthite formation in the bottom layer owing to the high contents of Ca and Al.

关键词： YSZ thermal barrier coating APS CMAS corrosion Anorthite

Modification of Analytical Expression of Electron Dynamical Diffraction

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Journal of Materials Science & Technology 2004年第1期20卷 1-2页

作者： canying cai, Qibin YANG and Hongrong LIUInstitute of Modern Physics, Xiangtan University, Xiangtan 411105, China Xiangtan Univ Inst Modern Phys Xiangtan 411105 Peoples R China

Assuming that the wave function φ>=eη, the Schrodinger equation can be written as. Neglecting the last two terms, an analytical expression of electron dynamical diffraction was derived by Qibin YANG et al. In this paper, the analytical expression is modified by further considering thesecond-order differential term When the accelerating voltage is not very high, or the sample is not very thin, the reciprocal vector g is large, the modification of the second-order differential is necessary; otherwise it can be neglected.

关键词： Electron dynamical diffraction Electron crystallography Schrodinger equation

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抗菌肽Protegrin-1的研究进展

中国畜牧杂志 2021年第6期57卷 67-72页

作者：施益如李暄蔡明烩段玉婉刘璨颖佛山科学技术学院生命科学与工程学院广东佛山528231

抗菌肽是机体天然免疫系统的重要组成部分,具有抗病原微生物活性。在抗菌肽Protegrin(PG)家族中,PG1因其有效的抗病原微生物活性和体内的稳定性日益受到关注,是具有前景的疾病治疗候选物,也是研究抗菌肽作用机理的理想模型。本文对PG1... 详细信息

抗菌肽是机体天然免疫系统的重要组成部分,具有抗病原微生物活性。在抗菌肽Protegrin(PG)家族中,PG1因其有效的抗病原微生物活性和体内的稳定性日益受到关注,是具有前景的疾病治疗候选物,也是研究抗菌肽作用机理的理想模型。本文对PG1的结构特性、基因表达、生物活性、作用机制和相关应用研究等进行综述,为生产中抗菌肽PG1的进一步开发和应用提供参考。

关键词：抗菌肽 Protegrin-1 结构表达作用机制

术前超声对儿童及青少年甲状腺癌中央区淋巴结转移的预测价值

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中国超声医学杂志 2019年第12期35卷 1063-1066页

作者：郭良云杨璨莹刘燕娜章春泉平璐依姚彩江西省南昌大学第二附属医院超声科

目的探讨术前超声对儿童及青少年甲状腺癌(TC)中央区淋巴结转移的预测价值。方法收集139例在我院经手术切除及术后病理证实为TC的儿童及青少年患者,并根据术后病理结果分为淋巴结转移组与未转移组,回顾性分析其术前超声特征及临床资料,... 详细信息

目的探讨术前超声对儿童及青少年甲状腺癌(TC)中央区淋巴结转移的预测价值。方法收集139例在我院经手术切除及术后病理证实为TC的儿童及青少年患者,并根据术后病理结果分为淋巴结转移组与未转移组,回顾性分析其术前超声特征及临床资料,通过单因素及多因素分析探究儿童及青少年TC中央区淋巴结转移的危险因素。结果单因素分析显示两组在患者的性别、年龄及结节的结构、内部回声、纵横比、血流及邻近被膜之间的差异无统计学意义(P>0.05),结节最大径、边缘与结节内的微钙化之间的差异具有统计学意义(P<0.05)。Logistic分析显示结节最大径≥30mm、边缘不规则、结节内的微钙化是儿童及青少年TC中央区淋巴结转移的独立危险因素,三者联合下ROC曲线面积为0.719。结论甲状腺癌结节的最大径≥30mm、边缘不规则和结节内的微钙化可明显增加儿童及青少年TC中央区淋巴结转移的风险,术前超声对于预测儿童及青少年TC中央区淋巴结转移具有较高的价值。

关键词：超声诊断儿童青少年甲状腺癌淋巴结转移

叙事医学视野下儿童发热门诊的人文关怀探索与实践

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中国医学伦理学 2024年第5期37卷 586-591页

作者：蔡玉桃陈雪温秀兰叶丽彦洪瀚丹李灿莹蔡娴杨秋梅苏燕崧广州市妇女儿童医疗中心珠江新城院区发热门诊广东广州510000 广州市妇女儿童医疗中心珠江新城院区NICU 广东广州510000

为了探索人文关怀在儿童发热门诊的应用,广州市妇女儿童医疗中心儿童发热门诊以叙事医学为指导理念开展了相关研究。阐述儿童发热门诊存在的医疗人文困境与叙事照护需求,从护士职业叙事能力与人文关怀能力培养、叙事性患教为特色的健康... 详细信息

为了探索人文关怀在儿童发热门诊的应用,广州市妇女儿童医疗中心儿童发热门诊以叙事医学为指导理念开展了相关研究。阐述儿童发热门诊存在的医疗人文困境与叙事照护需求,从护士职业叙事能力与人文关怀能力培养、叙事性患教为特色的健康小讲堂的开设、儿童及家属的就诊焦虑缓解、叙事护理相关支持与爱心服务等四个维度着重探讨具有中国特色的儿科叙事医学实践路径。旨在提高儿童发热门诊护士的叙事照护能力,为儿童患者开发出能消除就医恐惧的方法,保护儿童身心健康;为家长提供关怀、支持及情感表达的载体;为护士通过叙事反思实现职业成长奠定基础。从而助力医患之间建立生命叙事共同体关系,共同探索生命的意义。

关键词：叙事医学儿童发热门诊叙事能力人文关怀

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