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宜宾乡镇级密集地震监测台网建设及地震信号分析

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结构工程师 2024年第3期40卷 76-85页

作者：任晓崧王泽亚杨健任广震宗刚同济大学土木工程学院同济大学土木工程防灾减灾全国重点实验室上海200092

在宜宾建设地震监测台网,布置在地震多发区域的八个台站形成乡镇级密集地震监测台网。与传统强震台阵不同,各台站均包含地面测点和邻近多层学校建筑楼层测点。共获取136次地震诱发的地面及楼层信号共约2000条,根据信号特点大致分为震中... 详细信息

在宜宾建设地震监测台网,布置在地震多发区域的八个台站形成乡镇级密集地震监测台网。与传统强震台阵不同,各台站均包含地面测点和邻近多层学校建筑楼层测点。共获取136次地震诱发的地面及楼层信号共约2000条,根据信号特点大致分为震中区、近区、远区和超远区四类信号。震中区和近区信号数据量最多,为强地面和楼层加速度数据,其中震中距小于10 km的震中区信号地面及建筑楼层信号共56条。选取了代表性的数据,分析了地面平均反应谱特征,给出了地面加速度峰值随震中距的衰减曲线。还对地面和/或楼层信号峰值相对较小的超远区信号、远区信号作了讨论。

关键词：乡镇密集台网震中区信号近区信号平均反应谱

肌肉减少指数对急性心肌梗死患者急诊PCI术后发生院内不良事件的预测价值

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解放军医学杂志 2024年第4期49卷 408-415页

作者：李成思王张羽曹少清王玉琴叶江平刘叶红靳天慧宗刚军安徽医科大学无锡临床学院心内科江苏无锡214044 安徽医科大学第五临床医学院安徽合肥230032 解放军联勤保障部队第904医院心血管内科江苏无锡214044

目的探讨血清肌酐/胱抑素C比值(SCr/Cys C)作为肌肉减少指数(SI),与急性心肌梗死(AMI)患者行急诊经皮冠状动脉介入治疗(PCI)后,发生院内不良事件之间的相关性,并评估SI预测发生院内主要不良心血管事件(MACEs)的效能。方法选取2020年1月-... 详细信息

目的探讨血清肌酐/胱抑素C比值(SCr/Cys C)作为肌肉减少指数(SI),与急性心肌梗死(AMI)患者行急诊经皮冠状动脉介入治疗(PCI)后,发生院内不良事件之间的相关性,并评估SI预测发生院内主要不良心血管事件(MACEs)的效能。方法选取2020年1月-2023年3月在解放军联勤保障部队第904医院接受急诊PCI的306例AMI患者进行回顾性分析。根据患者术后住院期间是否发生MACEs分为MACEs组(n=43)与非MACES组(n=263)。收集两组患者的临床特征和急诊PCI术前实验室检查结果并进行比较。对有差异的指标进一步采用单因素和多因素logistic回归分析影响AMI患者PCI术后住院期间发生MACEs的独立危险因素,并绘制受试者工作特征(ROC)曲线评价SI的预测效能。结果AMI患者住院期间MACEs发生率为14.1%。术前MACEs组SI水平明显低于非MACES组,差异有统计学意义(P<0.001)。通过多次校正多因素logistic回归分析结果显示,新发房颤、Killip 2-4级、SI、三酰甘油是急诊PCI术后院内不良事件的独立危险因素。ROC曲线结果显示,采用SCr/Cys C比值计算的SI(AUC=0.741,95%CI 0.666~0.816)对急诊PCI术后MACEs的预测价值优于单项Cys C(AUC=0.658,95%CI 0.570~0.746),差异有统计学意义(P<0.05),且SI的最佳截断值为78.14。根据截断值对SI分层后,与较高的SI组相比,较低的SI组具体不良事件心力衰竭(P<0.001)、恶性心律失常(P=0.009)、卒中(P=0.003)的发生更多,差异有统计学意义。结论SI是AMI患者行急诊PCI术后住院期间发生MACEs的独立危险因素,是预测患者预后的有效指标。

关键词：肌肉减少指数急性心肌梗死主要不良心血管事件血清肌酐/胱抑素C 经皮冠状动脉介入治疗

A Phase-field Model to Simulate Recrystallization in an AZ31 Mg Alloy in Comparison of Experimental Data

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Journal of Materials Science & Technology 2008年第6期24卷 829-834页

作者： Mingtao WANG B.Y.zong gang WANG School of Materials and Metallurgy Northeastern University Shenyang 110004 China

A model has been established to simulate the realistic spatio-temporal microstructure evolution in recrystallization of a magnesium alloy using the phase field approach. A set of rules have been proposed to decide the real physical value of all parameters in the model. The thermodynamic software THERMOCALC is applied to determine the local chemical free energy and strain energy, which is added to the free energy density of grains before recrystallization. The Arrhenius formula is used to describe boundary mobility and the activity energy is suggested with a value of zinc segregation energy at the boundary. However, the mobility constant in the formula was found out by fitting to a group of grain size measurements during recrystallization of the alloy. The boundary range is suggested to decide the gradient parameters in addition of fitting to the experimental boundary energy value. These parameter values can be regarded as a database for other similar simulations and the fitting rules can also be applied to build up databases for any other alloy systems. The simulated results show a good agreement with reported experimental measurement of the alloy at the temperatures from 300 to 400℃ for up to 100 min but not at 250℃. This implies a mechanism variation in activity energy of the boundary mobility in the alloy at low temperature.

关键词： Static recrystallization Phase field model Magnesium alloys Microstructure

腮腺区炎性肌纤维母细胞瘤1例报告及文献复习

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中国口腔颌面外科杂志 2024年第4期22卷 413-416页

作者：徐晨马丽娟石尧文玉珍宋永海车宗刚淄博市中心医院口腔颌面外科淄博山东255000

炎性肌纤维母细胞瘤(inflammatory myofibroblastic tumor,IMT)是一种较为少见的间充质肿瘤,由大量梭形细胞组成,伴有淋巴细胞、浆细胞等炎性细胞浸润。本文报告发生于腮腺区的1例IMT病例,同时结合相关文献对IMT的病因、临床特点、诊断... 详细信息

炎性肌纤维母细胞瘤(inflammatory myofibroblastic tumor,IMT)是一种较为少见的间充质肿瘤,由大量梭形细胞组成,伴有淋巴细胞、浆细胞等炎性细胞浸润。本文报告发生于腮腺区的1例IMT病例,同时结合相关文献对IMT的病因、临床特点、诊断、治疗及预后进行复习,以提高临床医师对发生于腮腺区IMT的认识。

关键词：炎性肌纤维母细胞瘤间充质肿瘤诊断治疗

In situ detection of the electron diffusion region of collisionless magnetic reconnection at the high-latitude magnetopause

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Earth and Planetary Physics 2018年第3期2卷 231-237页

作者： Qiu-gang zong Hui Zhang Institute of Space Physics and Applied Technology Peking University Geophysical Institute University of Alaska Fairbanks

Magnetic reconnection is the most fundamental energy-transfer mechanism in the universe that converts magnetic energy into heat and kinetic energy of charged *** reconnection to occur,the frozen-in condition must break down in a localized region,commonly called the ‘diffusion region'.In Earth's magnetosphere,ion diffusion regions have already been observed,while electron diffusion regions have not been detected due to their small scales(of the order of a few km)(Paschmann,2008).In this paper we report,for the first time,in situ observations of an active electron diffusion region by the four Cluster spacecraft at the Earth's highlatitude *** electron diffusion region is characterized by nongyrotropic electron distribution,strong field-aligned currents carried by electrons and bi-directional super-Alfvénic electron *** observed were multiple micro-scale flux ropes,with a scale size of about 5 c/ω_(pe)(12 km,with c/ωpe the electron inertial length),that are crucial for electron acceleration in the guide-field reconnection process(Drake et al.,2006 a).The data demonstrate the existence of the electron diffusion region in collisionless guide-field reconnection at the magnetopause.

关键词： electron diffusion region magnetic reconnection high-latitude magnetopause

Two Cases of Spinal Tanycytic Ependymoma Associated with Neurofibromatosis Type 2

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Chinese Medical Journal 2017年第7期130卷 872-873页

作者： Xiao-gang Tao zong-gang Hou Shu-Yu Hao Jun-Ting Zhang Bai-Yun Liu Department of Neurosurgery Beijing Tiantan Hospital Capital Medical University Beijing 100050 China

INTRODUCTION Tanycytic ependymoma is a rare subtype of the World Health Organization Grade il ependymoma most commonly found in the cervical and thoracic segments of the spinal cord. Spinal tumors in neurofibromatosis type 2 （NF-2） can be intramedullary, extramedullary, or associated with the nerve roots, and there may be multiple tumors at multiple locations in the spine.

关键词： Neurofibromatosis Type 2 Spinal Tumor Tanycytic Ependymoma

Exploring cerebral structural and functional abnormalities in a mouse model of post-traumatic headache induced by mild traumatic brain injury

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Zoological Research 2024年第3期45卷 648-662页

作者： Dan Yang Bin-Bin Nie Jin-gang He zong-Qiang Lv Feng-Feng Mo Si-Yi Ouyang Jie Wang Ju-Xiang Chen Tao Tao Department of Anesthesiology Central People’s Hospital of ZhanjiangZhanjiangGuangdong 524045China Key Laboratory of Nuclear Radiation and Nuclear Energy Technology Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China Key Laboratory of Magnetic Resonance in Biological Systems State Key Laboratory of Magnetic Resonance and Atomic and Molecular PhysicsNational Center for Magnetic Resonance in WuhanWuhan Institute of Physics and MathematicsInnovation Academy for Precision Measurement Science and TechnologyChinese Academy of Sciences-Wuhan National Laboratory for OptoelectronicsWuhanHubei 430071China Department of Neurosurgery Changhai HospitalNaval Medical UniversityShanghai 200082China Department of Nutrition and Food Hygiene Faculty of Naval MedicineNaval Medical UniversityShanghai 200433China Department of Anesthesiology Nanfang HospitalSouthern Medical UniversityGuangzhouGuangdong 510515China Institute of Neuroscience and Brain Diseases/Xiangyang Central Hospital Affiliated Hospital of Hubei University of Arts and ScienceXiangyangHubei 441021China Songjiang Hospital and Songjiang Research Institute Shanghai Jiao Tong University School of MedicineShanghai 201600China Department of Anesthesiology Zhujiang HospitalSouthern Medical UniversityGuangzhouGuangdong 510515China

Mild traumatic brain injury(mTBI)-induced post-traumatic headache(PTH)is a pressing public health concern and leading cause of disability *** PTH is often accompanied by neurological disorders,the exact underlying mechanism remains largely *** potential biomarkers may prompt the diagnosis and development of effective treatments for mTBI-induced *** this study,a mouse model of mTBI-induced PTH was established to investigate its effects on cerebral structure and function during short-term *** indicated that mice with mTBI-induced PTH exhibited balance deficits during the early post-injury *** kinetics revealed that variations in neurotransmitters were most prominent in the cerebellum,temporal lobe/cortex,and hippocampal regions during the early stages of ***,variations in brain functional activities and connectivity were further detected in the early stage of PTH,particularly in the cerebellum and temporal cortex,suggesting that these regions play central roles in the mechanism underlying ***,our results suggested that GABA and glutamate may serve as potential diagnostic or prognostic biomarkers for *** studies should explore the specific neural circuits involved in the regulation of PTH by the cerebellum and temporal cortex,with these two regions potentially utilized as targets for non-invasive stimulation in future clinical treatment.

关键词： Post-traumatic headache(PTH) Mild traumatic brain injury(mTBI) Metabolic kinetics fMRI Cerebellum

金属氧化物光催化剂降解偶氮染料废水的研究进展

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应用化工 2023年第3期52卷 874-879页

作者：宗刚高存西安工程大学环境与化学工程学院陕西西安710048

综述了各种金属氧化物,如钛氧化物、锌氧化物、铁氧化物、铜氧化物、铈氧化物及其他金属氧化物复合材料降解偶氮染料的研究进展。它们具有不同的结构、结晶和形态特征,所以具有不同的去除有机物的能力。深入讨论了金属氧化物及其复合材... 详细信息

综述了各种金属氧化物,如钛氧化物、锌氧化物、铁氧化物、铜氧化物、铈氧化物及其他金属氧化物复合材料降解偶氮染料的研究进展。它们具有不同的结构、结晶和形态特征,所以具有不同的去除有机物的能力。深入讨论了金属氧化物及其复合材料的光催化机理以及与光催化相关的性能。高效的降解效率、经济可行的光催化材料制备方法以及可控带隙工程是对未来光催化剂的新挑战。

关键词：金属氧化物光催化偶氮染料脱色

Classification of knowledge graph completeness measurement techniques

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Journal of Systems Engineering and Electronics 2024年第1期35卷 154-162页

作者： ZHANG Ying XIAO gang Institute of Systems Engineering Academy of Military SciencesBeijing 100107China

At present,although knowledge graphs have been widely used in various fields such as recommendation systems,question and answer systems,and intelligent search,there are always quality problems such as knowledge omissions and *** assessment and control,as an important means to ensure the quality of knowledge,can make the applications based on knowledge graphs more complete and more accurate by reasonably assessing the knowledge graphs and fixing and improving the quality problems at the same ***,as an indispensable part of the knowledge graph construction process,the results of quality assessment and control determine the usefulness of the knowledge *** them,the assessment and enhancement of completeness,as an important part of the assessment and control phase,determine whether the knowledge graph can fully reflect objective phenomena and reveal potential connections among *** this paper,we review specific techniques of completeness assessment and classify completeness assessment techniques in terms of closed world assumptions,open world assumptions,and partial completeness *** purpose of this paper is to further promote the development of knowledge graph quality control and to lay the foundation for subsequent research on the completeness assessment of knowledge graphs by reviewing and classifying completeness assessment techniques.

关键词： quality assessment completeness assessment closed world assumptions open world assumption partial completeness assumption