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高龄患者院内呼吸道感染临床特征

解放军保健医学杂志 2003年第3期5卷 161-162页

作者：邹淑芬谭耕雯解放军总医院南楼临床部北京100853

目的探讨高龄患者呼吸道感染临床特征,提高治愈率。方法回顾性分析了38例80岁以上高龄患者呼吸道感染的临床表现、常规及实验室指标。结果 ①高龄呼吸道感染临床表现以精神萎糜,乏力倦怠、食欲差、病情变化较快为特征。②血气分析低... 详细信息

目的探讨高龄患者呼吸道感染临床特征,提高治愈率。方法回顾性分析了38例80岁以上高龄患者呼吸道感染的临床表现、常规及实验室指标。结果 ①高龄呼吸道感染临床表现以精神萎糜,乏力倦怠、食欲差、病情变化较快为特征。②血气分析低氧血症和二氧化碳潴留出现的时间早于X片的表现。③提出预防呼吸道感染的办法和措施。结论呼吸道感染是造成高龄患者单器官或多器官衰竭的诱因,掌握其发病特征可提高治愈率。

关键词：高龄院内感染呼吸道感染临床特征细菌学检查

Phillips-Heffron model for current-controlled power electronic generation unit

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Journal of Modern Power Systems and Clean Energy 2018年第3期6卷 582-594页

作者： Shulong tan Hua geng geng YANG Department of Automation Tsinghua University

This paper presents a Phillips-Heffron model for the generation unit with current-controlled(CC) voltage source converter(VSC) as the interface. A concept of current angle is put forward for the CC-VSC, and the relationship between the current angle and the power angle is also quantified. Based on the current angle, a PhillipsHeffron model is established for the generation unit with CC-VSC, considering the dynamic of phase-locked-loop(PLL) in the weak grid. The model demonstrates that small-signal dynamics of the generation unit is similar to that of the traditional synchronous generator(SG) which is characterized by the electromechanical swing *** the dynamics can be depicted by the famous inertia,synchronizing and damping coefficients. Small-signal stability of a CC-VSC-based single machine infinite bus system is analyzed by means of the traditional theory of power system. Based on the relationship between the current angle and the power angle, the Phillips-Heffron model of the CC-VSC is also used in stability analysis of multimachine power system, and parameter optimizations of the CC-VSC are also studied for stability improvement.

关键词： Phillips-Heffron model Voltage source converter Current angle Synchronous generator Small-signal stability

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氢氧化镁改性硅藻土处理含镉废水的研究

化学研究与应用 2018年第10期30卷 1621-1628页

作者：李振张皓东卜鸡明谭耿张明月昆明理工大学环境科学与工程学院云南昆明650504 昆明理工大学化学工程学院云南昆明650504

采用Mg(OH)_2对天然硅藻土进行改性,并应用于处理含Cd^(2+)废水。以等温吸附模型、吸附动力学模型与吸附热力学模型来剖析,结果证明吸附过程同时包含自发的、吸热的熵增加物理吸附,以及符合伪二阶动力学模型的化学吸附。采用扫描电子显... 详细信息

采用Mg(OH)_2对天然硅藻土进行改性,并应用于处理含Cd^(2+)废水。以等温吸附模型、吸附动力学模型与吸附热力学模型来剖析,结果证明吸附过程同时包含自发的、吸热的熵增加物理吸附,以及符合伪二阶动力学模型的化学吸附。采用扫描电子显微镜(SEM)、红外光谱(IR)、X射线衍射(XRD)、N_2等温吸脱附曲线等分析手段进行表征,结果表明,改性材料具有粒径小、晶型好、结晶度高、分布比较均匀、孔道结构良好的特点。实验探索出p H值、底物浓度、吸附剂的投加量、温度以及吸附时间等主要参数对处理效果的影响,最佳条件下改性硅藻土对Cd^(2+)的去除率(90.2%)为原土的7.6倍。

关键词：氢氧化镁改性硅藻土镉吸附模型

A promising approach for quantifying focal stroke modeling and assessing stroke progression:optical resolution photoacoustic microscopy photothrombosis

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Neural Regeneration Research 2025年第7期20卷 2029-2037页

作者： Xiao Liang Xingping Quan Xiaorui geng Yujing Huang Yonghua Zhao Lei Xi Zhen Yuan Ping Wang Bin Liu Faculty of Health Sciences University of MacaoMacao Special Administrative RegionChina Center for Cognitive and Brain Sciences University of MacaoMacao Special Administrative RegionChina Department of Biomedical Engineering Southern University of Science and TechnologyShenzhenGuangdong ProvinceChina State Key Laboratory of Quality Research in Chinese Medicine Institute of Chinese Medical SciencesUniversity of MacaoTaipaMacao Special Administrative RegionChina Department of Emergency Zhujiang HospitalSouthern Medical UniversityGuangzhouGuangdong ProvinceChina

To investigate the mechanisms underlying the onset and progression of ischemic stroke,some methods have been proposed that can simultaneously monitor and create embolisms in the animal cerebral ***,these methods often require complex systems and the effect of age on cerebral embolism has not been adequately studied,although ischemic stroke is strongly *** this study,we propose an optical-resolution photoacoustic microscopy-based visualized photothrombosis methodology to create and monitor ischemic stroke in mice simultaneously using a 532 nm pulsed *** observed the molding process in mice of different ages and presented age-dependent vascular embolism ***,we integrated optical coherence tomography angiography to investigate age-associated trends in cerebrovascular variability following a *** imaging data and quantitative analyses underscore the differential cerebrovascular responses to stroke in mice of different ages,thereby highlighting the technique's potential for evaluating cerebrovascular health and unraveling age-related mechanisms involved in ischemic strokes.

关键词： age-dependent cerebral cortex ischemic stroke mouse model optical coherence tomography angiography photoacoustic microscopy photothrombosis vascular imaging

岩溶、节理发育地段隧道进洞三维数值模拟分析

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西部交通科技 2018年第7期 101-105,123页

作者：钟华刘巍谭耿钱海洋广西路桥工程集团有限公司广西南宁530011

文章以崇水高速陇禁隧道为工程背景,综合考虑节理、岩溶等不良地质因素,采用有限元软件FLAC3D建立三维数值模型,分析隧道进洞施工过程中围岩的受力特性及变形情况。结果表明:模型计算结果与现场实测数据吻合,采用FLAC3D有限元软件建模... 详细信息

文章以崇水高速陇禁隧道为工程背景,综合考虑节理、岩溶等不良地质因素,采用有限元软件FLAC3D建立三维数值模型,分析隧道进洞施工过程中围岩的受力特性及变形情况。结果表明:模型计算结果与现场实测数据吻合,采用FLAC3D有限元软件建模具有一定的可靠性;隧道穿越节理、岩溶地段,隧道拱顶围岩沉降变形达8.8mm,拱脚出现应力集中现象,且整个开挖面塑性区面积较大;喷锚初期支护可有效抑制隧道围岩竖向位移,考虑岩体蠕变特性,建议施工过程应及时施作初期支护。

关键词： FLAC3D软件隧道进洞喷锚支护数值模拟

Carbon-supported CeNCl as an efficient catalyst for CO_(2)cycloaddition

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Nano Research 2025年第1期18卷 157-163页

作者： Li Liu Lingling Zhang Xiang Chu Baokang geng Huilin Wang Zongxiang Li Xiao Wang Shuyan Song Hongjie Zhang School of Applied Chemistry and Engineering University of Science and Technology of ChinaHefei 230026China State Key Laboratory of Rare Earth Resource Utilization Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022China Sinocare Incorporation Changsha 410221China Department of Chemistry Tsinghua UniversityBeijing 100084China

The cycloaddition reaction of CO_(2)with epoxide not only effectively reduces the concentration of CO_(2)in the atmosphere,but also has excellent industrial application value and up to 100%atom utilization,but there are difficulties in separation and recovery of traditional homogeneous catalysts,harsh reaction conditions of traditional heterogeneous catalysts,and activation of CO_(2)*** this paper,an easily synthesized heterogeneous catalyst CeNCl/C was used to catalyze the cycloaddition reaction of CO_(2)with styrene oxide,with a high yield of 92.7%,a high selectivity of 96.7%,a turnover numbers(TON)value of 349,and a good stability demonstrated in six cycle tests(equivalent to 216 h of testing).Through comprehensive studies,it was shown that CeNCl/C contains Lewis acid-base centers as active centers,which can effectively reduce the energy barrier required for ring opening of the reaction substrate,enhance the adsorption and activation of CO_(2),and promote the formation of intermediates,which led to the acquisition of excellent catalytic activity.

关键词： CO_(2)cycloaddition heterogeneous catalysis CeNCl Lewis acid/base

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满山白化学成分的研究

化学学报 1982年第2期40卷 178-180页

作者：邓福孝林耿坦归筱铭周炳南福建省医药研究所福建省药品检验所中国科学院上海药物研究所福州

满山白系杜鹃花科植物毛果杜鹃(Rhododendron seniavinii Maxim.).福建省建阳地区用其根和叶治疗慢性气管炎千余例,对止咳、祛痰均有较好的疗效.有关满山白化学成分的研究国内外尚未见报道,为进一步阐明其有效成分,进行了化学成分的研... 详细信息

满山白系杜鹃花科植物毛果杜鹃(Rhododendron seniavinii Maxim.).福建省建阳地区用其根和叶治疗慢性气管炎千余例,对止咳、祛痰均有较好的疗效.有关满山白化学成分的研究国内外尚未见报道,为进一步阐明其有效成分,进行了化学成分的研究. 满山白干叶粉经分离后得到1～7七个成分.经化学、物理性能比较及红外、核磁共振、.

关键词：满山白杜鹃花属化学成分针状结晶硅胶柱层析熔点熔解温度

Repetitive transcranial magnetic stimulation in Alzheimer’s disease:effects on neural and synaptic rehabilitation

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Neural Regeneration Research 2025年第2期20卷 326-342页

作者： Yi Ji Chaoyi Yang Xuerui Pang Yibing Yan Yue Wu Zhi geng Wenjie Hu Panpan Hu Xingqi Wu Kai Wang Department of Neurology The First Affiliated Hospital of Anhui Medical UniversityHefeiAnhui ProvinceChina Anhui Province Key Laboratory of Cognition and Neuropsychiatric Disorders HefeiAnhui ProvinceChina Collaborative Innovation Center of Neuropsychiatric Disorders and Mental Health HefeiAnhui ProvinceChina Institute of Artificial Intelligence Hefei Comprehensive National Science CenterHefeiAnhui ProvinceChina Department of Psychology and Sleep Medicine The Second Affiliated Hospital of Anhui Medical UniversityHefeiAnhui ProvinceChina

Alzheimer’s disease is a neurodegenerative disease resulting from deficits in synaptic transmission and *** Alzheimer’s disease brain tends to be hyperexcitable and hypersynchronized,thereby causing neurodegeneration and ultimately disrupting the operational abilities in daily life,leaving patients *** transcranial magnetic stimulation is a cost-effective,neuro-modulatory technique used for multiple neurological *** the past two decades,it has been widely used to predict cognitive decline;identify pathophysiological markers;promote neuroplasticity;and assess brain excitability,plasticity,and *** has also been applied to patients with dementia,because it can yield facilitatory effects on cognition and promote brain recovery after a neurological ***,its therapeutic effectiveness at the molecular and synaptic levels has not been elucidated because of a limited number of *** study aimed to characterize the neurobiological changes following repetitive transcranial magnetic stimulation treatment,evaluate its effects on synaptic plasticity,and identify the associated *** review essentially focuses on changes in the pathology,amyloidogenesis,and clearance pathways,given that amyloid deposition is a major hypothesis in the pathogenesis of Alzheimer’s *** mechanisms associated with repetitive transcranial magnetic stimulation procedures and different pathways mediating gene transcription,which are closely related to the neural regeneration process,are also ***,we discuss the outcomes of animal studies in which neuroplasticity is modulated and assessed at the structural and functional levels by using repetitive transcranial magnetic stimulation,with the aim to highlight future directions for better clinical translations.

关键词： Alzheimer’s disease amyloid deposition apoptotic mechanisms biomarker neural regeneration neurodegeneration repetitive transcranial magnetic stimulation synaptic plasticity

Crystallization Modulation and Holistic Passivation Enables Efficient Two‑Terminal Perovskite/CuIn(Ga)Se_(2)tandem Solar Cells

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Nano-Micro Letters 2025年第1期17卷 205-215页

作者： Cong geng Kuanxiang Zhang Changhua Wang Chung Hsien Wu Jiwen Jiang Fei Long Liyuan Han Qifeng Han Yi‑Bing Cheng Yong Peng State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070People’s Republic of China Triumph Photovoltaic Materials Co. Ltd.No.1001 Yannan AvenueHigh‑Tech Development DistrictBengbuAnhui 233000People’s Republic of China College of Materials Science and Engineering Guilin University of TechnologyGuilin 541004People’s Republic of China State Key Laboratory of Metal Matrix Composites Shanghai Jiao Tong UniversityShanghai 200240People’s Republic of China

Two-terminal(2-T)perovskite(PVK)/CuIn(Ga)Se_(2)(CIGS)tandem solar cells(TSCs)have been considered as an ideal tandem cell because of their best bandgap matching regarding to Shockley–Queisser(S–Q)***,the nature of the irregular rough morphology of commercial CIGS prevents people from improving tandem device *** this paper,D-homoserine lactone hydrochloride is proven to improve coverage of PVK materials on irregular rough CIGS surfaces and also passivate bulk defects by modulating the growth of PVK *** addition,the minority carriers near the PVK/C60 interface and the incompletely passivated trap states caused interface recombination.A surface reconstruction with 2-thiopheneethylammonium iodide and N,N-dimethylformamide assisted passivates the defect sites located at the surface and grain ***,LiF is used to create this field effect,repelling hole carriers away from the PVK and C60 interface and thus reducing *** a result,a 2-T PVK/CIGS tandem yielded a power conversion efficiency of 24.6%(0.16 cm^(2)),one of the highest results for 2-T PVK/CIGS TSCs to our *** validation underscores the potential of our methodology in achieving superior performance in PVK/CIGS tandem solar cells.

关键词： PVK/CIGS TSCs Irregular rough surfaces Modulating the growth PVK/C60 interface recombination