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The impact of nanoporous SiN_x interlayer growth position on high-quality GaN epitaxial films

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Chinese Science Bulletin 2011年第25期56卷 2739-2743页

作者： MA ZiGuang XING ZhiGang WANG xiaoli CHEN yao XU PeiQiang CUI YanXiang WANG Lu JIANG Yang JIA HaiQiang CHEN Hong Beijing National Laboratory of Condensed Matter Institute of Physics Chinese Academy of Sciences Beijing 100190 China

The impact of nanoporous SiN x interlayer growth position on high-quality GaN epitaxial film was elucidated from the behavior of dislocations. The best quality GaN film was achieved when a nanoporous SiN x interlayer was grown on a rough layer, with the high-resolution X-ray diffraction rocking curve full width at half maximum for ( 1102 ) reflection decreasing to 223 arcs, and the total dislocation density reduced to less than 1.0×10 8 cm 2 . GaN films were grown on sapphire substrates by metal organic chemical vapor deposition. The quality of these films was investigated with high-resolution X-ray diffraction, atomic force microscopy, and cross-sectional transmission electron microscopy. A preference for the formation of half-loops to reduce threading dislocations was observed when an SiN x interlayer was grown on a rough layer. A growth mechanism is proposed to explain this preference.

关键词：氮化硅外延片多孔层间氮化镓 GaN薄膜化学气相沉积法透射电子显微镜

Ventilation function changes in patients with Duchenne muscular dystrophy under and over 12 years of age Analysis of 65 cases

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Neural Regeneration Research 2008年第8期3卷 918-920页

作者： Zhiping Li Yifeng Luo Jianqiang Huang Lihong Peng xiaoli yao Department of Respiratory Medicine the First Affiliated Hospital of Sun Yat-Sen University Guangzhou 510080 Guangdong Province China Department of Neurology the First Affiliated Hospital of Sun Yat-Sen University Guangzhou 510080 Guangdong Province China

BACKGROUND：Previous studies indicate that vital capacity in patients with Duchenne muscular dystrophy increases with age when they are under 12 years old, and decreases from 13 or 14 years of age; however, recent studies indicate that the vital capacity in patients with Duchenne muscular dystrophy begins to decrease even before 12 years of age. OBJECTIVE： To verify if the vital capacity in patients with Duchenne muscular dystrophy decreases before the age of 12 years and to observe the effect of rehabilitation exercise on vital capacity. DESIGN, TIME AND SETTING： The case analysis was performed at the Department of Neurology, The First Affiliated Hospital of Sun Yat-Sen University （Guangzhou, Guangdong Province, China） from December 2004 to January 2006. PARTICIPANTS： Sixty-five male patients diagnosed as having Duchenne muscular dystrophy and who underwent pulmonary ventilation function examination at the Department of Neurology, The First Affiliated Hospital of Sun Yat-Sen University （Guangzhou, Guangdong Province, China） from December 2004 to January 2006; ages ranged from 6 to 22 years old. METHODS： The ventilation function of 65 patients was determined using a Sensor Medics 2100 pulmonary function test apparatus （USA）, and the data obtained were subjected to statistical analysis comparing patients under 12 years of age and those above 13 years of age, and comparing those who performed rehabilitation exercise with those who did not. MAIN OUTCOME MEASURES： Forced vital capacity （FVC）; forced expiratory volume in one second （FEV1）; maximal voluntary ventilation （MMV）; the ratio of forced expiratory volume in one second and forced vital capacity （FEV1/FVC）; each measured value as a percentage of the corresponding predicted value. RESULTS： There were no significant differences in FVC, FEV1 and MMV between patients under 12 years of age and those above 13 years of age （P 〉 0.05）. The FVC, FEV1 and MMV values, as percentages of the predicted values, were, in patients

关键词： Duchenne muscular dystrophy pulmonary function rehabilitation exercise

Alzheimer's disease treated with combined therapy based on nourishing marrow and reinforcing Qi

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Journal of Traditional Chinese Medicine 2015年第3期35卷 255-259页

作者： Chen Songlin yao xiaoli Liang Yinying Mei Weiyi Liu Xiaoyun Zhang Changran Department of Neurology First Affiliated Hospital of Sun Yat-sen University Department of Cardiology First Affiliated Hospital of Sun Yat-sen University Department of Traditional Chinese Medicine First Affiliated Hospital of Sun Yat-sen University Department of Pneumology First Affiliated Hospital of Sun Yat-sen University

OBJECTIVE:To study the efficacy and safety of combined Traditional Chinese Medicine(TCM) therapy based on nourishing marrow to improve intellect and reinforcing Qi to activate bloodon mild to moderate Alzheimer's disease(AD).METHODS:Sixty-six patients with AD,whoseMini-Mental State Examination(MMSE) score were from 10-24,were randomized equally into an intervention group and a control *** control group was given Aricept(5 mg,once daily).The intervention group was further divided into Yang-Qi deficiency(n = 18) and of Yin-Qi deficiency(n = 15)*** in the Yang-Qi deficiency group were intravenously administered Shenfu injection,60 mL,and deproteinized calf blood injection(DCBl),1.2 g,once *** Yin-Qi deficiency group was given Shenmai injection,60 mL,and DCBl,1.2 g,once *** course lasted 21 ***:Compared with the control group and with pre-treatment in the same group,MMSE,clinical dementia rating,and activities of daily living scale scores in the intervention group were significantly improved(all P0.05).No adverse effects were observed in any group during ***:We found that combined TCM therapy is effective and safe for managing mild to moderate AD.

关键词： Alzheimer disease Combined modality therapy Donepezil Deproteinized calf blood injection

Dielectric Relaxation in Bi_2BaNb_2O_9 Ceramic

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Journal of Materials Science & Technology 1993年第6期9卷 461-463页

作者： xiaoli WANG Xi yao Electronic Materials Research Laboratory,Xi’an Jiaotong University,Xi’an,710049,China

A very strong dielectric relaxation was observed in Bi_2BaNb_2O_9 *** temperature difference between the maximum dielectric constant temperatures T_m measured at 1 kHz and 100 kHz is 65℃. which is about 2-4 times tha... 详细信息

关键词： dielectric relaxation ceramic temperature

一种高气压金属卤化物气体放电灯用新型电源的原理研究

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西安交通大学学报 2001年第6期35卷 568-572页

作者：王汝文姚晓莉姚建军西安交通大学电气工程学院西安710049

提出一种用于高气压金属卤化物气体放电灯供电电源的新型主电路拓扑 .不需设置专门提供起燃脉冲的高压脉冲发生器 ,只须改变电路工作频率 ,即能满足这类灯在起燃、负阻运行、稳态运行各阶段对电源不同输出特性的要求 .电路结构简单 ,装... 详细信息

提出一种用于高气压金属卤化物气体放电灯供电电源的新型主电路拓扑 .不需设置专门提供起燃脉冲的高压脉冲发生器 ,只须改变电路工作频率 ,即能满足这类灯在起燃、负阻运行、稳态运行各阶段对电源不同输出特性的要求 .电路结构简单 ,装置体积小 .在负载稳定运行后 ,电源输出特性近似电流源 ,开关器件电流幅值较低 ,并可实现零电流换相 .讨论了这种电源的工作原理和系统结构 ,并给出了模拟负载的PSPICE仿真和实验室试验结果 ,表明其完全符合电路的工作原理和设计思想 .

关键词：谐振逆变器电流源零电流换相高气压金属卤化物气体放电灯

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棘红细胞增多症

中华神经科杂志 2024年第7期57卷 783-788页

作者：姚晓黎王倞中山大学附属第一医院神经科、广东省重大神经疾病诊治研究重点实验室、国家临床重点专科和国家重点学科广州510080

棘红细胞增多症是一类以血棘红细胞异常增多伴神经系统损害的遗传性疾病,可呈常染色体隐性、显性,X连锁隐性遗传,神经系统症状可表现为舞蹈样动作等运动障碍症状、共济失调、精神症状、认知功能改变、神经肌肉损害等,还可有心脏、眼、... 详细信息

棘红细胞增多症是一类以血棘红细胞异常增多伴神经系统损害的遗传性疾病,可呈常染色体隐性、显性,X连锁隐性遗传,神经系统症状可表现为舞蹈样动作等运动障碍症状、共济失调、精神症状、认知功能改变、神经肌肉损害等,还可有心脏、眼、胃肠道、代谢等多系统损害表现。该病较为罕见,临床变异较大,容易误诊、漏诊。本文对该病的病因、流行病学、临床表现、辅助检查、诊断及鉴别诊断、治疗与预后等方面进行介绍。

关键词：棘红细胞增多症病因学诊断治疗

Alcohol exposure impairs brain paravascular functions

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Alcohol exposure impairs brain paravascular functions

Chiral plasmonic nanostructure of twistedly stacked nanogaps

中国神经科学学会第十二届全国学术会议

作者： Qiang Liu xiaoli yao Zhong Pei Huanxing Su State Key Laboratory of Quality Research in Chinese Medicine Institute of Chinese Medical Sciences University of Macau Department of Neurology National Key Clinical Department and Key Discipline of Neurology The First Affiliated Hospital Sun Yat-Sen University

Alcoholism is a risk factor for the development of cognitive decline and dementia. Here we demonstrated that the paravascular function in the brain was impaired by ethanol in a dose-dependent manner. Acute moderate and heavy ethanol administration substantially retarded and reduced the entry of subarachnoid cerebrospinal fluid（CSF） via the paravascular space into the cerebral parenchyma, thus impaired CSFinterstitial fluid（ISF） exchange and parenchymal amyloid β（Aβ） peptide clearance. The elevated release of β-endorphin and reduced cerebrovascular pulsatility after acute ethanol administration could account for the impairment of the paravascular function. Chronic ethanol consumption led to a global activation of astrocytes and a widespread loss of perivascular AQP4 polarization in the brain, which results in an irreversible impairment of the paravascular function and parenchymal Aβ clearance. Therefore, we propose that impaired paravascular functions and reduced parenchymal Aβ clearance found in both acute and chronic ethanol-treated animals may contribute to the development of cognitive decline and dementia in alcoholism.

关键词： Alcoholism AQP4 polarization Aβ clearance CSF-ISF exchange

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Chinese Optics Letters 2021年第1期19卷 95-99页

作者： Jian Zhang Rui Tu Chao Huang xiaoli yao Xin Hu Haixiong Ge Xuefeng Zhang Institute of Advanced Magnetic Materials College of Materials&Environmental EngineeringHangzhou Dianzi UniversityHangzhou 310018China College of Electronics and Information Hangzhou Dianzi UniversityHangzhou 310018China Department of Materials Science and Engineering College of Engineering and Applied SciencesNanjing UniversityNanjing 210093China

Nanogap plasmonic structures with strong coupling between separated components have different responses to orthogonal-polarized light, giving rise to giant optical chirality. Here, we proposed a three-dimensional(3D) nanostructure that consists of two vertically and twistedly aligned nanogaps, showing the hybridized charge distribution within 3D *** is discovered that the structure twisted by 60° exhibits plasmonic coupling behavior with/without gap modes for different circular-polarized plane waves, showing giant chiral response of 60% at the wavelength of 1550 nm. By controlling the disk radius and the insulator layer, the circular dichroism signal can be further tuned between 1538 and 1626 nm.

关键词： metal-insulator-metal structure nanogaps gap mode twisted stacking charge distribution chiral response

Researching for affection facts of CBM production in Linfen block based on the method of gray co-connection

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Researching for affection facts of CBM production in Linfen ...