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Rapid characterization of non-volatile phenolic compounds reveals the reliable chemical markers for authentication of traditional Chinese medicine Xiang-ru among confusing Elsholtzia species

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Chinese Journal of Natural Medicines 2024年第4期22卷 375-384页

作者： ZENG Zhen ZHANG Chen hu jiadong WANG Feiyan WU Ziding WANG Jing ZHANG Jun YANG Shuda CHEN Junfeng LI Mingming TONG Qi QIU Shi CHEN Wansheng The SATCM Key Laboratory for New Resources&Quality Evaluation of Chinese Medicine Institute of Chinese Materia MedicaShanghai University of Traditional Chinese MedicineShanghai 201203China Department of Pharmacy Second Affiliated Hospital of Navy Medical UniversityShanghai 200003China Kunming Plant Classification Biotechnology Co. Ltd.Kunming 650500China School of Pharmaceutical Sciences and Yunnan Key Laboratory of Pharmacology for Natural Products Kunming Medical UniversityKunming 650500China State Key Laboratory for Quality Ensurance and Sustainable Use of Dao-di Herbs Beijing100700China

The aerial parts of Mosla chinensis *** Mosla chinensis cv.'Jiangxiangru'(MCJ)are widely utilized in traditional Chinese medicine(TCM),known collectively as ***,due to clinical effectiveness concerns and frequent misidentification,the original plants have increasingly been substituted by various species within the genera Elsholtzia and *** challenge in distinguishing between these genera arises from their similar morphological and metabolic *** address this issue,our study introduced a rapid method for metabolic characterization,employing high-resolution mass spectrometry-based *** detailed biosynthetic and chemometric analyses,we pinpointed five phenolic compounds—salviaflaside,cynaroside,scutellarein-7-O-D-glucoside,rutin,and vicenin-2—among 203 identified compounds,as reliable chemical markers for distinguishing Xiang-ru from closely related Elsholtzia *** methodology holds promise for broad application in the analysis of plant aerial parts,especially in verifying the authenticity of aromatic traditional medicinal *** findings underscore the importance of non-volatile compounds as dependable chemical markers in the authentication process of aromatic traditional medicinal plants.

关键词： Genus Elsholtzia Genus Mosla Traditional Chinese medicine Xiang-ru Non-volatile phenolic compounds Liquid chromatography-mass spectrometry

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时域色散选通光谱分析技术

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红外与激光工程 2024年第7期53卷 251-259页

作者：靳致远章振夏海云胡佳栋余赛芬陈逸翔夏秋炜南京信息工程大学大学大气物理学院江苏南京210044 国家碳计量中心(福建) 福建南平353011

光频域的光谱分析技术已在分子原子光谱学中发挥了重要作用,但仍存在频率扫描慢、锁定复杂等问题。基于此,提出了一种基于时域的光谱选通和扫描方法,具有光谱分辨率高、扫描速度快和无机械运动元件的优点。飞秒时域拉伸技术作为一种超... 详细信息

光频域的光谱分析技术已在分子原子光谱学中发挥了重要作用,但仍存在频率扫描慢、锁定复杂等问题。基于此,提出了一种基于时域的光谱选通和扫描方法,具有光谱分辨率高、扫描速度快和无机械运动元件的优点。飞秒时域拉伸技术作为一种超快探测手段,能够将飞秒脉冲展宽至纳秒,并实现光谱信息至时域信息的实时映射。在时域中使用皮秒级脉冲调制展宽后的纳秒脉冲,可选通出特定光谱。选通后,调节皮秒脉冲的延时便可完成光谱的扫描。通过51次延时选通测量氰化氢气体的2ν3旋转振动带P10吸收线,验证了该时域色散选通法的光谱分析能力。单次测量的累计时间为5μs,230 ps选通脉冲宽度和56 ps扫描间隔对应的光谱分辨率和光谱扫描间隔分别为6.2 GHz和1.5 GHz,与色散光谱仪直接测量对比的误差标准差为0.0065,最大偏差的百分比为1.54%。未来通过降低选通脉冲宽度至30ps和提高脉冲扫描速度,该光谱分析技术可达到0.8 GHz的光谱分辨率和千赫兹以上的光谱扫描速度。

关键词：光谱分析时域拉伸频率选通频率扫描

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Caprini评分联合纤维蛋白原水平对下肢骨折患者下肢深静脉血栓的预测价值

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中国医学创新 2024年第6期21卷 108-111页

作者：葛永军胡家东樊嵘无锡市第八人民医院骨科江苏无锡214011 中国人民解放军联勤保障部队第904医院骨科江苏无锡214000

目的:探究Caprini评分联合纤维蛋白原(fibrinogen,FIB)水平对下肢骨折患者下肢深静脉血栓(deep vein thrombosis,DVT)的预测价值。方法:以2020年1月1日—2022年9月30日中国人民解放军联勤保障部队第904医院收治的下肢骨折患者作为研究对... 详细信息

目的:探究Caprini评分联合纤维蛋白原(fibrinogen,FIB)水平对下肢骨折患者下肢深静脉血栓(deep vein thrombosis,DVT)的预测价值。方法:以2020年1月1日—2022年9月30日中国人民解放军联勤保障部队第904医院收治的下肢骨折患者作为研究对象,共100例。根据术前下肢深静脉彩色多普勒超声检查结果将研究对象分成DVT组(n=11)和非DVT组(n=89)。比较DVT组和非DVT组FIB水平和Caprini评分;基于模型公式:Y=β_(0)+β_(1)×A+β_(2)×B,构建Caprini评分、FIB回归模型;建立受试者操作特征(ROC)曲线,分析Caprini评分、FIB、Caprini评分联合FIB在下肢骨折患者下肢DVT预测中的应用价值。结果:DVT组的Caprini评分、FIB水平均高于非DVT组(P<0.05)。Caprini评分、FIB的二元logistic回归模型为:Y=-21.556+2.637×FIB+1.997×Caprini评分。经ROC曲线分析,FIB预测下肢DVT的曲线下面积(AUC)为0.908,敏感度为81.82%,特异度为92.13%;Caprini评分预测下肢DVT的AUC为0.939,敏感度为90.91%,特异度为85.39%;Caprini评分联合FIB预测下肢DVT的AUC为0.972,敏感度为100%,特异度为86.52%。结论:发生下肢DVT的下肢骨折患者术前的Caprini评分较高,FIB水平呈现异常增高的情况,Caprini评分联合FIB预测下肢DVT的价值更高。

关键词： Caprini评分纤维蛋白原下肢骨折敏感度特异度下肢深静脉血栓

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计及中性点电位均衡的VIENNA型整流器简化空间矢量调制方法

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电力与能源 2024年第1期45卷 31-36页

作者：郑智威胡嘉栋陆晓平国网上海市电力公司市北供电公司上海200072

当能量无需双向传递时,常规的二电平、三电平型变换器存在一定缺陷,为克服该缺陷,针对三电平三开关型VIENNA型整流器进行了工作机理以及拓扑结构分析。由于VIENNA型整流器在直流侧会产生中性点电位脉动,所以在SVPWM算法的占空比分布中... 详细信息

当能量无需双向传递时,常规的二电平、三电平型变换器存在一定缺陷,为克服该缺陷,针对三电平三开关型VIENNA型整流器进行了工作机理以及拓扑结构分析。由于VIENNA型整流器在直流侧会产生中性点电位脉动,所以在SVPWM算法的占空比分布中引入直流母线电容的电压变化量参数,这能够改变矢量作用时间,从而实现中性点电位均衡。研究了三电平转二电平的一种SVPWM简化调制方法,并验证了所提方法的实用性和有效性。

关键词： VIENNA型整流器中性点电位均衡简化SVPWM

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有氧运动对降低药物成瘾患者药物渴求的影响综述

医学研究前沿

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医学研究前沿 2024年第4期2卷 31-33页

作者：闫自一代宏伟乜鲁洁胡家栋云南省第六强制隔离戒毒所云南德宏州678400 云南师范大学体育学院云南昆明650500

药物成瘾是令社会大众闻之色变的一种反复发作的慢发性脑疾病,对患者的各脏器及心理、认知等诸多方面产生深远危害。研究发现采用有氧运动能有效促进药物成瘾患者体质健康、改善认知功能、减少对药物的渴求达到降低药物渴求的目的。本... 详细信息

药物成瘾是令社会大众闻之色变的一种反复发作的慢发性脑疾病,对患者的各脏器及心理、认知等诸多方面产生深远危害。研究发现采用有氧运动能有效促进药物成瘾患者体质健康、改善认知功能、减少对药物的渴求达到降低药物渴求的目的。本文对药物成瘾的形成机制进行梳理,研究有氧运动对降低药物渴求三个阶段的影响并进行总结和综述,以期为药物成瘾的非药物干预提供科学依据,为临床实践提供指导建议。

关键词：有氧运动降低药物渴求体质健康水平

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舞动疗法促进戒毒人员心理康复的研究进展

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中国药物滥用防治杂志 2024年第6期30卷 990-995页

作者：罗鸣春胡家栋王珏普丽辉刘艳莉和仕杰云南民族大学教育学院云南昆明650504 云南省第六强制隔离戒毒所云南德宏678400 云南省心理咨询师协会云南昆明650500 德宏师范高等专科学校云南德宏678400

促进戒毒人员心理康复对于促进社会和谐和公共卫生安全具有重要意义。舞动疗法是一种表达性艺术治疗方法,包括舞蹈治疗和动作治疗,是通过使用舞蹈或即兴动作的方式将其运用到心理治疗中,达到个体情绪、认知和生理的整合,促进心理健康发... 详细信息

促进戒毒人员心理康复对于促进社会和谐和公共卫生安全具有重要意义。舞动疗法是一种表达性艺术治疗方法,包括舞蹈治疗和动作治疗,是通过使用舞蹈或即兴动作的方式将其运用到心理治疗中,达到个体情绪、认知和生理的整合,促进心理健康发展。本研究基于舞动疗法的原理和技术,探索民族舞蹈促进戒毒人员心理康复的作用机制,分析民族舞蹈促进戒毒人员心理康复的实践模式。探索舞动疗法与禁毒戒毒工作融合发展,以期实现舞动疗法与地方民族文化创新性发展与创造性整合,促进舞动疗法与中国特色毒品问题治理本土化、专业化与实证化发展,为禁毒戒毒工作提供新的工作借鉴。

关键词：舞动疗法民族舞蹈毒品治理心理康复

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Symmetry quantification and segmentation in STEM imaging through Zernike moments

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Chinese Physics B 2024年第8期33卷 39-48页

作者： jiadong Dan Cheng Zhang 赵晓续 N.Duane Loh Department of Biological Sciences National University of SingaporeSingapore Center for Bioimaging Sciences(CBIS) National University of SingaporeSingapore Department of Physics National University of SingaporeSingapore School of Materials Science and Engineering Peking UniversityBeijing 100871China

We present a method using Zernike moments for quantifying rotational and reflectional symmetries in scanning transmission electron microscopy(STEM)images,aimed at improving structural analysis of materials at the atomic *** technique is effective against common imaging noises and is potentially suited for low-dose imaging and identifying quantum *** showcase its utility in the unsupervised segmentation of polytypes in a twisted bilayer TaS_(2),enabling accurate differentiation of structural phases and monitoring transitions caused by electron beam *** approach enhances the analysis of structural variations in crystalline materials,marking a notable advancement in the characterization of structures in materials science.

关键词： scanning transmission electron microscopy(STEM) symmetry segmentation

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A Review of Computing with Spiking Neural Networks

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Computers, Materials & Continua 2024年第3期78卷 2909-2939页

作者： jiadong Wu Yinan Wang Zhiwei Li Lun Lu Qingjiang Li College of Electronic Science and Technology National University of Defense TechnologyChangsha410073China

Artificial neural networks(ANNs)have led to landmark changes in many fields,but they still differ significantly fromthemechanisms of real biological neural networks and face problems such as high computing costs,excessive computing power,and so *** neural networks(SNNs)provide a new approach combined with brain-like science to improve the computational energy efficiency,computational architecture,and biological credibility of current deep learning *** the early stage of development,its poor performance hindered the application of SNNs in real-world *** recent years,SNNs have made great progress in computational performance and practicability compared with the earlier research results,and are continuously producing significant *** there are already many pieces of literature on SNNs,there is still a lack of comprehensive review on SNNs from the perspective of improving performance and practicality as well as incorporating the latest research *** from this issue,this paper elaborates on SNNs along the complete usage process of SNNs including network construction,data processing,model training,development,and deployment,aiming to provide more comprehensive and practical guidance to promote the development of ***,the connotation and development status of SNNcomputing is reviewed systematically and comprehensively from four aspects:composition structure,data set,learning algorithm,software/hardware development *** the development characteristics of SNNs in intelligent computing are summarized,the current challenges of SNNs are discussed and the future development directions are also *** research shows that in the fields of machine learning and intelligent computing,SNNs have comparable network scale and performance to ANNs and the ability to challenge large datasets and a variety of *** advantages of SNNs over ANNs in terms of energy efficiency and spatial-temporal data processing

关键词： Spiking neural networks neural networks brain-like computing artificial intelligence learning algorithm

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A robust triaxial localization method of AE source using refraction path

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International Journal of Mining Science and Technology 2024年第4期34卷 521-530页

作者： Yichao Rui Jie Chen Jiongkun Chen jiadong Qiu Zilong Zhou Wenzhong Wang Jinyang Fan State Key Laboratory of Coal Mine Disaster Dynamics and Control Chongqing UniversityChongqing 400044China School of Resources and Safety Engineering Chongqing UniversityChongqing 400044China School of Resources Environment and Safety Engineering University of South ChinaHengyang 421001China School of Resources and Safety Engineering Central South UniversityChangsha 410083China Coal Geological Exploration Institute of Gansu Lanzhou 730030China

Acoustic emission(AE)localization algorithms based on homogeneous media or single-velocity are less accurate when applied to the triaxial localization *** the end,a robust triaxial localization method of AE source using refraction path is ***,the control equation of the refraction path is established according to the sensor coordinates and arrival ***,considering the influence of time-difference-of-arrival(TDOA)errors,the residual of the governing equation is calculated to estimate the equation ***,the refraction points in different directions are solved using Snell’s law and orthogonal ***,the source coordinates are iteratively solved by weighted correction *** feasibility and accuracy of the proposed method are verified by pencil-lead breaking *** simulation results show that the new method is almost unaffected by the refraction ratio,and always holds more stable and accurate positioning performance than the traditional method under different ratios and scales of TDOA outliers.

关键词： Acoustic emission(AE) Source localization Robust method Refraction paths Weight estimations

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Nonlinear Impact Damage Evolution of Charpy Type and Analysis of Its Key Influencing Factors

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Chinese Journal of Mechanical Engineering 2024年第1期37卷 254-264页

作者： Jianfeng Mao Qian Xu jiadong Yang Chi Cao Dasheng Wang Fengping Zhong Mingya Chen Institute of Process Equipment and Control Engineering Zhejiang University of TechnologyHangzhou 310032China Taizhou Key Laboratory of Advanced Manufacturing Technology Taizhou InstituteZhejiang University of TechnologyTaizhou 318014China State Key Laboratory of Nuclear Power Safety Monitoring Technology and Equipment Shenzhen 518172China Zhejiang Academy of Special Equipment Science Hangzhou 310020China Suzhou Nuclear Power Research Institute Suzhou 215004China

The current research of Charpy impact mainly focuses on obtaining the ductile brittle transition temperature of materials by *** with experiments,numerical simulation can study many problems with harsh ***,there are still few studies on the influence of geometric factors such as side *** this paper,the geometry of standard Charpy impact test is *** with different widths and side grooves are *** finite element model of Charpy impact was established by ABAQUS *** test results and simulation results to verify each *** effects of sample width,side groove depth and side groove bottom fillet on the impact fracture resistance of the sample were *** results show that the specimen width is positively correlated with the impact toughness of the *** side groove greatly reduces the impact toughness of the material;the toughness of side groove decreases with the increase of depth;the fracture toughness of side groove decreases with the increase of fillet at the bottom of side *** proportion of toughness energy to impact energy of samples was *** results show that the toughness energy accounts for about 70%of the impact energy of the sample,which has little to do with the geometric characteristics of the *** study presents a reliable method for studying Charpy impact *** influence of geometric parameters is obtained,which provides a reference method for the study of impact toughness of high toughness materials.

关键词： Johnson-Cook model Impact toughness Charpy impact

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