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Chinese Chemical Letters 2024年第6期35卷 353-357页

作者： Jinyan Zhang Fen liu Qian Jin xueyi li Qiong Zhan Mu Chen Sisi Wang Zhenlong Wu Wencai Ye Lei Wang State Key Laboratory of Bioactive Molecules and Druggability Assessment Jinan UniversityGuangzhou 510632China Center for Bioactive Natural Molecules and Innovative Drugs and Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs ResearchJinan UniversityGuangzhou 510632China College of Pharmacy Jinan UniversityGuangzhou 510632China

The first phloroglucinol-triterpenoid hybrids,myrtphlotritins A-E(1-5),were rapidly recognized and isolated from two species of Myrtaceae by employing the building blocks-based molecular network(BBMN)*** 1-5 featured new carbon skeletons in which phloroglucinol derivatives were coupled with lupane-and dammarane-type triterpenoids through different linkage *** structures and absolute configurations were elucidated by comprehensive analysis of spectroscopic data and quantum chemical *** pathways for compounds 1-5 were proposed on the basis of the coexisting *** by the biogenetic pathways,the biomimetic synthesis of compound 1 was also ***,compounds 2,3,and 5 exhibited potent antiviral activities against herpes simplex virus type-1(HSV-1)infection,and compounds 2 and 5 displayed significant anti-inflammatory activities on RAW264.7 cells.

关键词： Phloroglucinol-triterpenoid adduct Myrtaceae Building blocks-based molecular network Biomimetic synthesis Antiviral activity Anti-inflammatory activity

高龄髋部骨折患者的专科护士主导的康复护理效果及对疼痛的影响

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反射疗法与康复医学 2024年第7期5卷 126-129页

作者：李雪轶重庆医科大学附属第二医院骨科关节外科中心

目的探析专科护士主导的康复护理在高龄髋部骨折患者中的应用效果。方法选取重庆医科大学附属第二医院2021年1月—2022年12月收治的480例高龄髋部骨折患者为研究对象，按照入院先后顺序将其分为A组和B组。A组（n=240）采用常规护理，... 详细信息

目的探析专科护士主导的康复护理在高龄髋部骨折患者中的应用效果。方法选取重庆医科大学附属第二医院2021年1月—2022年12月收治的480例高龄髋部骨折患者为研究对象，按照入院先后顺序将其分为A组和B组。A组（n=240）采用常规护理，B组（n=240）采用专科护士主导的康复护理。对比两组患者的疼痛程度、髋关节功能、生活自理能力、并发症发生情况及护理满意度。结果干预前，两组的疼痛视觉模拟评分（VAS）比较，差异无统计学意义（P>0.05）；干预后3 d、7 d、2周，B组的VAS评分均低于A组，组间差异有统计学意义（P0.05）；干预后，B组的HHS评分、ADL评分分别为（65.74±4.12）分、（66.29±4.11）分，均高于A组的（56.85±4.69）分、（57.68±4.03）分，组间差异有统计学意义（P<0.05）。B组的并发症发生率为2.92%，低于A组的7.50%，护理满意度为96.67%，高于A组的91.25%，组间差异有统计学意义（P<0.05）。结论将专科护士主导的康复护理应用于高龄髋部骨折患者中，可减轻其疼痛，显著提升患者的髋关节功能、日常生活自理能力，提高护理满意度。

关键词：高龄髋部骨折专科护士主导疼痛髋关节功能

基于泛在电力物联网的配网用户用电信息安全采集方法

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移动信息 2024年第6期46卷 169-171页

作者：李雪毅赵招弟固原农村电力服务有限公司宁夏固原756300

为解决常规配网用户用电信息采集方法性能不佳、用电信息完整性与准确性较差的问题,文中利用泛在电力物联网,提出了一种全新的用电信息安全采集方法。首先,利用电力物联网建立一个稳定、可靠的用电信息数据采集网络,为安全采集工作的开... 详细信息

为解决常规配网用户用电信息采集方法性能不佳、用电信息完整性与准确性较差的问题,文中利用泛在电力物联网,提出了一种全新的用电信息安全采集方法。首先,利用电力物联网建立一个稳定、可靠的用电信息数据采集网络,为安全采集工作的开展奠定基础;然后确定数据源,选择用电信息数据采集设备,在用电信息采集网络中应用数据采集设备来实时、准确地获取配网用户的用电信息;最后,采用非对称加密算法对采集到的用电信息进行加密与解密处理,实现用电信息的安全传输与接收。实验结果表明,通过该方法,配网用户用电信息数据丢失率最高不超过0.5%,且相较于传统方法,该方法采集到的用电信息更加完整、准确。

关键词：电力物联网配网用户用电信息安全采集

巴蜀文化旅游走廊建设背景下地方文旅产业品牌力提升研究——以成都市龙泉驿区为例

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成都行政学院学报 2024年第2期 106-115,120页

作者：陈晓敏李雪怡中共成都市龙泉驿区委党校四川成都610100 四川大学华西第四医院四川成都610041

巴蜀文化旅游走廊建设为成渝两地文旅产业发展和城市文化品牌提升创造了良好机遇。作为巴蜀文化旅游走廊上的关键节点,成都市龙泉驿区在文旅产业品牌文化、品牌传播和品牌延伸方面优势突出、成效显著,同时也面临一些发展问题。提升其文... 详细信息

巴蜀文化旅游走廊建设为成渝两地文旅产业发展和城市文化品牌提升创造了良好机遇。作为巴蜀文化旅游走廊上的关键节点,成都市龙泉驿区在文旅产业品牌文化、品牌传播和品牌延伸方面优势突出、成效显著,同时也面临一些发展问题。提升其文旅产业品牌力的路径包括:抢抓机遇,用好用活政策,促进文旅产业提档升级;顺势而为,依靠极核力量做大做强文旅产业品牌;加强团结协作,协同其他城市全面融入巴蜀文旅走廊建设;深挖文化内涵,强化本土文化研究保护与传承利用;强化政府主导,吸引社会资金投入;加强队伍建设,积极引进高端专业人才。

关键词：巴蜀文化旅游走廊文旅产业品牌力

Fault diagnosis of bearings based on deep separable convolutional neural network and spatial dropout

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Chinese Journal of Aeronautics 2022年第10期35卷 301-312页

作者： Jiqiang ZHANG Xiangwei KONG xueyi li Zhiyong HU liu CHENG Mingzhu YU School of Mechanical Engineering and Automation Northeastern UniversityShenyang 110819China Key Laboratory of Vibration and Control of Aero-Propulsion System Ministry of EducationNortheastern UniversityShenyang 110819China liaoning Province Key Laboratory of Multidisciplinary Design Optimization of Complex Equipment Northeastern UniversityShenyang 110819China Angang Steel Company limited Anshan 114021China

Bearing pitting,one of the common faults in mechanical systems,is a research hotspot in both academia and *** fault diagnosis methods for bearings are based on manual experience with low diagnostic *** study proposes a novel bearing fault diagnosis method based on deep separable convolution and spatial dropout *** separable convolution extracts features from the raw bearing vibration signals,during which a 3×1 convolutional kernel with a one-step size selects effective features by adjusting its *** similarity pruning process of the channel convolution and point convolution can reduce the number of parameters and calculation quantities by evaluating the size of the weights and removing the feature maps of smaller *** spatial dropout regularization method focuses on bearing signal fault features,improving the independence between the bearing signal features and enhancing the robustness of the model.A batch normalization algorithm is added to the convolutional layer for gradient explosion control and network stability *** validate the effectiveness of the proposed method,we collect raw vibration signals from bearings in eight different health *** experimental results show that the proposed method can effectively distinguish different pitting faults in the bearings with a better accuracy than that of other typical deep learning methods.

关键词： Batch normalization Convolutional neural network Fault diagnosis Similarity pruning Spatial dropout

bla_(CMY-2)阳性禽源奇异变形杆菌的多重耐药特征

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河南农业大学学报 2024年第2期58卷 239-248页

作者：于丽洁李学义马梦娟王梦桃贺丹丹苑丽潘玉善河南农业大学动物医学院河南郑州450046

【目的】研究bla_(CMY-2)阳性禽源奇异变形杆菌的多重耐药特征,并分析菌株CY32全基因组序列结构。【方法】对5株bla_(CMY-2)阳性禽源奇异变形杆菌进行氟苯尼考和质粒介导氟喹诺酮类耐药基因检测、接合试验和bla_(CMY-2)基因的Southern... 详细信息

【目的】研究bla_(CMY-2)阳性禽源奇异变形杆菌的多重耐药特征,并分析菌株CY32全基因组序列结构。【方法】对5株bla_(CMY-2)阳性禽源奇异变形杆菌进行氟苯尼考和质粒介导氟喹诺酮类耐药基因检测、接合试验和bla_(CMY-2)基因的Southern杂交定位,对其中一株菌CY32进行全基因测序和生物信息学分析。【结果】5株奇异变形杆菌携带的bla_(CMY-2)位于染色体,其中,菌株CY12、CY32、S31和S52携带floR,菌株CY12和CY32携带qnrD。CY32的染色体同时含有SXT/R391型整合性接合元件(integrative and conjugative elements,ICEs)(ICEPmiJpn1)和PmGRI1共2种耐药基因岛。ICEs的可变区包含2个串联的复合型转座子(IS10构成),其中一个复合型转座子携带bla_(CMY-2);CY32的PmGRI1耐药岛含有12个耐药基因。与其他奇异变形杆菌携带的PmGRI1相比,多重耐药区差异最大的区域位于Tn21转座子。此外,CY32包含2个质粒,包括携带floR的IncQ质粒和携带qnrD的非接合质粒。奇异变形杆菌CY32携带15个耐药基因,呈现多重耐药的特性。【结论】奇异变形杆菌经基因岛和质粒获得多重耐药,使治疗奇异变形杆菌感染变得更加困难,应加强对动物源奇异变形杆菌耐药性监测。

关键词：奇异变形杆菌基因岛整合性接合元件 C类头孢菌素酶多重耐药

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基于云计算的电力用户用电信息智能采集方法

移动信息 2024年第6期46卷 282-284页

作者：赵招弟李雪毅马保鹏固原农村电力服务有限公司宁夏固原756300

为优化电力用户用电信息采集效果,提高用电信息数据采集的匹配度与准确性,文中基于云计算提出了一种全新的电力用户用电信息智能采集方法。首先,建立用电信息网络结构模型,辨识与提取电力用户用电信息的各种动态特征;其次,设计智能采集... 详细信息

为优化电力用户用电信息采集效果,提高用电信息数据采集的匹配度与准确性,文中基于云计算提出了一种全新的电力用户用电信息智能采集方法。首先,建立用电信息网络结构模型,辨识与提取电力用户用电信息的各种动态特征;其次,设计智能采集流程,利用云计算实时采集电力用户的用电信息;在此基础上,对采集到的用电信息进行加密传输处理,确保电力用户用电数据的可靠性和持久性。实验结果表明,应用该智能采集方法后,3种不同类型的电力用户用电信息采集匹配度均高于98.57%,在采集准确性方面表现出较大的优势。

关键词：云计算电力用户用电信息智能采集

Eliminating H_(2)O/HF and regulating interphase with bifunctional tolylene-2,4-diisocyanate(TDI)additive for long life li-ion battery

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Journal of Energy Chemistry 2024年第8期95卷 519-528,I0011页

作者： xueyi Zeng Xiang Gao Peiqi Zhou Haijia li Xin He Weizhen Fan Chaojun Fan Tianxiang Yang Zhen Ma Xiaoyang Zhao Junmin Nan School of Chemistry South China Normal UniversityGuangzhou 510006GuangdongChina Guangzhou Tinci Materials Technology Co.Ltd. Guangzhou 510760GuangdongChina School of Environmental Engineering and Chemistry Luoyang Institute of Science and TechnologyLuoyang 471023HenanChina School of Geomatic and Environmental Engineering Henan Polytechnic InstituteNanyang 473000HenanChina

lithium-ion batteries(liBs)featuring a Ni-rich cathode exhibit increased specific capacity,but the establishment of a stable interphase through the implementation of a functional electrolyte strategy remains *** when the battery is operated under high temperature,the trace water present in the electrolyte will accelerate the hydrolysis of the electrolyte and the resulting HF will further erode the *** order to enhance the long-term cycling performance of graphite/liNi_(0.8)Co_(0.1)Mn_(0.1)O_(2)(NCM811)liBs,herein,Tolylene-2,4-diisocyanate(TDI)additive containing lone-pair electrons is employed to formulate a novel bifunctional electrolyte aimed at eliminating H_(2)O/HF generated at elevated *** 1000 cycles at 25℃,the battery incorporating the TDI-containing electrolyte exhibits an impressive capacity retention of 94%at 1 *** contrast,the battery utilizing the blank electrolyte has a lower capacity retention of only 78%.Furthermore,after undergoing 550 cycles at 1 C under45℃,the inclusion of TDI results in a notable enhancement of capacity,increasing it from 68%to 80%.This indicates TDI has a favorable influence on the cycling performance of liBs,especially at elevated *** analysis of the film formation mechanism suggests that the lone pair of electrons of the isocyanate group in TDI play a crucial role in inhibiting the generation of H_(2)O and HF,which leads to the formation of a thin and dense *** existence of this interphase is thought to substantially enhance the cycling performance of the *** work not only improves the performance of graphite/NCM811 batteries at room temperature and high temperature by eliminating H_(2)O/HF but also presents a novel strategy for advancing functional electrolyte development.

关键词： Graphite/liNi_(0.8)Co_(0.1)Mn_(0.1)O_(2)battery Tolylene-2 4-diisocyanate Long-cycling performance H_(2)O/HF eliminated additive

低频重复经颅磁刺激治疗青少年难治性抑郁症的效果观察

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中外医药研究 2024年第16期3卷 57-59页

作者：晏克文李学艺范月圆吴朴聪曲靖市第三人民医院精神科云南曲靖655000 曲靖市第三人民医院精神科二病区云南曲靖655000 曲靖市第三人民医院儿童青少年心理健康服务中心云南曲靖655000

目的:观察低频重复经颅磁刺激(rTMS)治疗青少年难治性抑郁症(TRD)的效果。方法:选取2021年4月—2023年4月曲靖市第三人民医院精神科收治的青少年TRD患者92例作为研究对象,随机分为观察组与对照组,各46例。两组均接受盐酸舍曲林治疗,观... 详细信息

目的:观察低频重复经颅磁刺激(rTMS)治疗青少年难治性抑郁症(TRD)的效果。方法:选取2021年4月—2023年4月曲靖市第三人民医院精神科收治的青少年TRD患者92例作为研究对象,随机分为观察组与对照组,各46例。两组均接受盐酸舍曲林治疗,观察组在盐酸舍曲林基础上接受低频rTMS治疗,对照组在盐酸舍曲林基础上接受改良电休克疗法治疗。比较两组患者临床疗效、认知与执行功能、持续性注意力、不良事件发生情况。结果:观察组治疗总有效率高于对照组,差异有统计学意义(P0.05);观察组正确反应数、完成分类数高于治疗前及对照组,差异有统计学意义(P0.05)。结论:低频rTMS治疗青少年TRD效果显著,可改善患者执行功能,且不影响患者的认知功能及注意力。

关键词：低频重复经颅磁刺激青少年难治性抑郁症

High Power Density EV Integrated Fast Battery Chargers Based on the General Torque Cancelation Law for Three-Phase Motors

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CSEE Journal of Power and Energy Systems 2024年第2期10卷 756-766页

作者： Yanxiong Lei Guiping Du Tuhuan li Wenjie Ma xueyi Wang School of Electric Power South China University of TechnologyGuangzhou 510641China

Integrated battery chargers are highly effective for saving costs and improving the power density of on-board chargers in electric vehicles (EVs), However, achieving torque elimination of the commonly used three-phase (3p) motors during the fast-charging process is challenging. In this paper, the general torque cancelation law applied in 3p permanent magnet synchronous motors (PMSMs) and induction motors (IMs) is derived to design high power density integrated fast battery chargers. Two novel integrated systems with fast-charging and vehicle-to-grid (V2G) capabilities are proposed based on this law. The main advantages of the proposed systems are: (1) Two filter inductors are constituted by the stator windings while charging, and only one external inductor and several contactors are supplemented to the motor-drive circuit. Therefore, the proposed integrated systems possess high power density;(2) The 3p open-winding (OW) motor is employed, with no need to modify the propulsion system or redesign the interior structure of the motor;(3) Employing an individual controller for each phase of the inner current loop control, the proposed systems realize unity power factors and low current harmonics in the fast-charging and V2G mode. Simulation and experimental results verify the feasibility of the proposed topologies and control strategies.

关键词： Electric vehicles(EVs) fast charging integrated battery charger 3p PMSM/IM torque cancelation