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蠋蝽卵巢发育动态及其与光周期的关系

植物保护 2024年第4期50卷 118-125,153页

作者：元晓艳李宏光王玉生伍绍龙邓玉莲李靖赵泽影肖艳松谭琳湖南农业大学植物保护学院长沙410128 湖南省烟草公司郴州市公司郴州423000 湖南省烟草公司长沙410004

蠋蝽Arma chinensis是一种重要的商品化天敌昆虫,而卵巢发育动态及其调控机制的研究有助于准确预测昆虫的产卵盛期和繁殖能力,对于规模化繁育蠋蝽的种群动态预测和调控具有重要意义。本文研究了蠋蝽卵巢的发育过程以及光周期对卵巢发育... 详细信息

蠋蝽Arma chinensis是一种重要的商品化天敌昆虫,而卵巢发育动态及其调控机制的研究有助于准确预测昆虫的产卵盛期和繁殖能力,对于规模化繁育蠋蝽的种群动态预测和调控具有重要意义。本文研究了蠋蝽卵巢的发育过程以及光周期对卵巢发育的影响,结果表明,蠋蝽雌成虫的内生殖系统由卵巢、侧输卵管、中输卵管、受精囊和端丝等组成。根据卵巢形态、卵黄沉积水平和卵子发生情况等典型特征,将其卵巢发育过程分为Ⅰ级(乳白透明期)、Ⅱ级(卵黄沉积期)、Ⅲ级(成熟待产期)、Ⅳ级(产卵盛期)和Ⅴ级(产卵末期)等5个级别。进一步研究发现,光周期对蠋蝽雌成虫的卵巢发育进程有显著影响,在长日照光周期L∥D=18 h∥6 h和16 h∥8 h时卵巢发育较快,卵巢长度、宽度,卵巢指数和卵子数量均显著高于其他光周期;而在光周期L∥D=14 h∥10 h、12 h∥12 h、10 h∥14 h、8 h∥16 h和6 h∥18 h下,卵巢发育明显减缓,大多处于乳白透明期。研究结果可为蠋蝽的生殖生物学研究提供科学依据,并为其规模化人工繁育和生防应用提供参考。

关键词：蠋蝽卵巢发育卵巢分级光周期

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Effects of propofol on early and late cytokines in lipopolysaccharideinduced septic shock in rats

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The Journal of Biomedical Research 2010年第5期24卷 389-394页

作者： Sha li hongguang Bao liu Han Lele liu Department of Anesthesiology Nanjing First Hospital Affiliated to Nanjing Medical UniversityNanjing 210006Jiangsu ProvinceChina

Objective：It has been reported that the intravenous anesthetic propofol（PPF）has anti-inflammatory effects in vitro and in *** purpose of this study was to investigate whether PPF has anti-inflammatory effects in lipopolysaccharide（LPS）-induced septic shock by inhibiting the induction of pro-inflammatory cytokinesinterleukin-6（IL-6）and tumor necrosis factor-α（TNF-α）and high mobility group box 1（HMGB1）in ***：Thirty six male Wistar rats were randomly assigned to one of three groups（control group,PPF＋LPS group and LPS group;n=12 per group）.Control group rats received a 0.9%NaCl solution（NS）by the tail *** PPF＋ LPS group rats received PPF（10 mg/kg bolus,followed by infusion at 10 mg/（kg·h）through a femoral vein catheter）1 h before LPS（7.5 mg/kg）administration via the tail *** LPS group rats received injection of LPS（7.5 mg/kg）via the tail *** effects were recorded as well as mortality rates,and plasma cytokine concentrations（TNF-α,IL-6,HMGB1）were measured for the 24-h observation ***：The mean arterial pressure and heart rate of the PPF＋LPS group were more stable than those of the LPS *** mortality at 24 h after the administration of the LPS injection was much higher in the LPS group（58.3%）compared to the PPF＋ LPS group（25.0%）.Plasma concentrations of cytokines（IL-6 and TNF-α）and HMGB1 were significantly reduced in the PPF＋LPS group compared to the LPS group（P0.05）.Conclusion：Pretreatment with PPF reduced the mortality rate of rats and attenuated the pro-inflammatory cytokine responses in an endotoxin shock model through an anti-inflammatory action inhibiting induction of HMGB1.

关键词： propofol sepsis tumor necrosis factor-α interleukin-6 high mobility group box 1

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钢轨中残余应力的产生、影响及调控研究现状

燕山大学学报 2024年第1期48卷 1-10页

作者：王建军李宏光王庆超董润洲杨志南张福成燕山大学国家冷轧板带装备及工艺工程技术研究中心河北秦皇岛066004 燕山大学亚稳材料制备技术与科学国家重点实验室河北秦皇岛066004 华北理工大学冶金与能源学院河北唐山063210

近年来随着我国高速、重载铁路的快速发展,列车速度的提升、轴重的加大对钢轨服役性能的可靠性提出了更高的要求。如果钢轨中的残余应力过大且处于不利的分布状态,容易促进疲劳裂纹的形成,并加速扩展,从而严重影响其服役性能。本文汇总... 详细信息

近年来随着我国高速、重载铁路的快速发展,列车速度的提升、轴重的加大对钢轨服役性能的可靠性提出了更高的要求。如果钢轨中的残余应力过大且处于不利的分布状态,容易促进疲劳裂纹的形成,并加速扩展,从而严重影响其服役性能。本文汇总了当前针对钢轨中残余应力的测量方法,并论述了钢轨中残余应力的产生原因及其对综合性能的影响机制。同时,依据钢轨生产的工艺流程,从预弯、冷却、矫直、回火等方面出发,综述了国内外研究者在钢轨残余应力演变及其调控领域所取得的成果。最后,对钢轨残余应力演变与调控技术的发展进行了展望。

关键词：钢轨贝氏体残余应力制造工艺调控

Lyotropic liquid crystals of tetradecyldimethylaminoxide in water and the in situ formation of gold nanomaterials

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ChemPhysMater 2023年第2期2卷 134-140页

作者： Na Zhang Aoxue Xu Baoyong liu Nicolas Godbert hongguang li Key Laboratory of Colloid and Interface Chemistry Ministry of EducationSchool of Chemistry and Chemical EngineeringShandong UniversityJinan 250100 China b College of Pharmacy Binzhou Medical UniversityYantai 264003 China c School of Chemistry and Chemical Engineering Lanzhou Jiaotong UniversityLanzhou 730070 China d MAT_INLAB(Laboratorio di Materiali Molecolari Inorganici) Centro di Eccelenza CEMIF.CALLASCAMM CR-INSTM Della CalabriaDipartimento di Chimica e Tecnologie ChimicheUniversitàdella CalabriaArcavacata di(CS)Rende 87036Italy

Lyotropic liquid crystals(LLCs)produced by the self-assembly of surfactant in water represent an important class of highly ordered soft materials that have a wide range of *** study investigates the LLCs formed by a zwitterionic surfactant(tetradecyldimethylaminoxide,C 14 DMAO)in *** organization of C 14 DMAO within the LLCs was determined based on a detailed analysis of small-angle X-ray scattering measure-ments and polarized microscopy observations of a typical *** to the singe-phase region,which has a hexagonal organization,several two-phase regions were observed,exhibiting the coexistence of hexago-nal/cubic,cubic/lamellar,and hexagonal/lamellar *** phase behavior showed an obvious dependence on temperature,with more pronounced two-phase regions at lower *** the LLCs as a matrix,Au nanospheres,nanoellipsoids,and nanorods were prepared without requiring additional reducing *** three-and one-dimensional Au nanomaterials could be converted to two-dimensional plates via the introduc-tion of a small amount of cationic surfactant to the LLCs,such as cetyltrimethylammonium bromide(CTAB)and 1-hexadecyl-3-methylimidazolium bromide([C 16 MIm]B),which showed pronounced surface-enhanced Raman scattering activity towards solid *** LLCs loaded with CTAB(or[C 16 MIm]B)and HAuCl 4 exhibited slightly different structures and mechanical strength from the original LLCs,thereby forming a new class of highly crowded colloidal materials.

关键词： Surfactant Lyotropic liquid crystal Gold nanoplate Surface-enhanced Raman scattering

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大黄素止咳祛痰作用的实验研究

国际呼吸杂志 2024年第4期44卷 453-458页

作者：李宏光田广原李媛那顺布和高笑宇孙德俊内蒙古科技大学包头医学院包头014000 内蒙古自治区人民医院、国家卫健委慢阻肺诊治重点实验室、内蒙古自治区呼吸疾病重点实验室呼和浩特010017 内蒙古大学生命科学学院呼和浩特010021

目的探究中药单体大黄素的止咳祛痰作用。方法本研究为实验研究,采用随机数字表法分为模型组(5只,生理盐水灌胃)、磷酸可待因治疗组(6只,0.03 g·kg^(-1)·d^(-1))、大黄素止咳组(5只,0.2 g·kg^(-1)·d^(-1)),用浓氨水处理小鼠,制备咳... 详细信息

目的探究中药单体大黄素的止咳祛痰作用。方法本研究为实验研究,采用随机数字表法分为模型组(5只,生理盐水灌胃)、磷酸可待因治疗组(6只,0.03 g·kg^(-1)·d^(-1))、大黄素止咳组(5只,0.2 g·kg^(-1)·d^(-1)),用浓氨水处理小鼠,制备咳嗽模型,观察大黄素对小鼠的止咳作用;通过酶联免疫吸附试验检测空白对照组(5只,不吸入浓氨水,不灌胃)及浓氨水引咳实验中模型组和大黄素止咳组小鼠血清中白细胞介素6水平。将小鼠分为阴性对照组(5只,生理盐水灌胃)、氯化铵治疗组(6只,1 g·kg^(-1)·d^(-1))、大黄素祛痰组(5只,0.2 g·kg^(-1)·d^(-1)),采用气管酚红法和肺组织糖原染色评估大黄素的祛痰作用,通过实时荧光定量聚合酶链反应法检测阴性对照组、氯化铵治疗组、大黄素祛痰组小鼠肺组织中黏蛋白5AC(MUC5AC)mRNA的表达水平。结果使用浓氨水处理模型组、磷酸可待因治疗组和大黄素止咳组小鼠,与模型组相比,大黄素可延长小鼠咳嗽潜伏期[(1.8±0.8)s比(53.2±1.9)s,P<0.01],并减少小鼠咳嗽次数[(115.4±32.3)次/3 min比(14.0±1.7)次/3 min,P<0.001],降低血清中白细胞介素6水平[(551.33±62.52)ng/L比(208.24±8.77)ng/L,P<0.001]。通过小鼠气管酚红法评估阴性对照组、氯化铵治疗组和大黄素祛痰组小鼠的气道排痰能力发现,与阴性对照组相比,大黄素可增加小鼠气管酚红的排泄量[(0.88±0.14)mg/L比(7.54±1.71)mg/L,P<0.001],降低小鼠肺组织中MUC5AC mRNA表达水平[(1.00±0.13)比(0.31±0.03),P<0.001]。通过糖原染色观察阴性对照组、氯化铵治疗组和大黄素祛痰组小鼠的肺组织发现,大黄素能减少小鼠肺组织中杯状细胞的数量。结论大黄素有一定的止咳祛痰的作用。

关键词：大黄素止咳祛痰浓氨水引咳法气管酚红排泄法

深度神经网络在线训练硬件加速器的数据量化综述

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微电子学与计算机 2024年第3期41卷 1-11页

作者：汪航李宝婷张旭翀李红光杜明超孙宏滨西安交通大学微电子学院陕西西安710049 西安交通大学人工智能学院陕西西安710049 西安应用光学研究所陕西西安710065

随着算法和数据的爆炸式增长,深度神经网络(Deep Neural Network, DNN)逐渐在实际应用中扮演愈发重要的角色。然而,真实场景中的数据与线下训练数据之间往往并不满足独立同分布假设,导致预训练DNN模型在实际应用中性能严重下降。所以,... 详细信息

随着算法和数据的爆炸式增长,深度神经网络(Deep Neural Network, DNN)逐渐在实际应用中扮演愈发重要的角色。然而,真实场景中的数据与线下训练数据之间往往并不满足独立同分布假设,导致预训练DNN模型在实际应用中性能严重下降。所以,在资源供给相对有限的平台上进行DNN模型在线训练成为其有效应用的保证。为了满足真实场景对DNN模型质量与速度的多维度性能要求,如何在保证算法精度的同时显著降低计算复杂度是在此类应用中部署DNN的关键。数据量化是降低计算复杂度的主流优化技术之一,能够通过降低模型参数、中间值等数据的位宽来减少硬件加速器的资源耗费。因此,从软件和硬件两个方面对深度神经网络训练加速器中关于数据量化的研究进行总结。对国内外最新发表的相关文献进行归纳总结。首先,从软件的角度总结了不同的量化方法,包括简单映射数据量化和复杂映射数据量化;其次,从硬件的角度总结了DNN加速器对网络在线训练各计算步骤的量化支持;再次,阐述了数据量化对加速器设计的影响,包括存储单元和计算单元;最后,对本领域的研究进行总结,并展望了未来本领域的发展方向。文章提出的分类方法有助于对之前的DNN加速器在数据量化方面的工作进行分类。

关键词：深度神经网络在线训练加速器数据量化

Structural Transformations and Multiferroic Properties of Bi_(1-x)Eu_(x)Fe_(0.95)Co_(0.05)O_(3)(x=0.05,0.10,0.15,and 0.20)

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Journal of Wuhan University of Technology(Materials Science) 2024年第2期39卷 315-319页

作者：梁修乾李永涛 liU liqing GUO Aiqian li Jianda ZHANG hongguang College of Science Nanjing University of Posts and TelecommunicationsNanjing 210023China College of Electronic Science and Engineering Nanjing University of Posts and TelecommunicationsNanjing 210023China

Bi_(1-x)Eu_(x)Fe_(0.95)Co_(0.05)O_(3 )(x=0.05,0.10,0.15,and 0.20) nanoparticles were prepared through the sol-gel *** structure,local electronic structure,magnetic and electric properties were systematically investigated.X-ray diffraction data show(104),(110) bimodal alignment and high angular migration,indicating that with the increase of Eu substitution at Bi site,the structure of BFO undergoes a continuous change in crystal *** hysteresis loop and the FC/ZFC curve show how magnetism varies with the size of the field and ***,the causes of magnetic changes were analyzed by studying SXAS and hysteresis loops.

关键词： magnetic materials XAS electric structure magnetic property

An Approach to Dynamic Asymptotic Estimation for Hurst Index of Network Traffic

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International Journal of Communications, Network and System Sciences 2010年第2期3卷 167-172页

作者： Xiaoyan MA hongguang li 不详

As an important parameter to describe the sudden nature of network traffic, Hurst index typically conducts behaviors of both self-similarity and long-range dependence. With the evolution of network traffic over time, more and more data are generated. Hurst index estimation value changes with it, which is strictly consistent with the asymptotic property of long-range dependence. This paper presents an approach towards dynamic asymptotic estimation for Hurst index. Based on the calculations in terms of the incremental part of time series, the algorithm enjoys a considerable reduction in computational complexity. Moreover, the local sudden nature of network traffic can be readily captured by a series of real-time Hurst index estimation values dynamically. The effectiveness and tractability of the proposed approach are demonstrated through the traffic data from OPNET simulations as well as real network, respectively.

关键词： Network Traffic Hurst Index Dynamic Asymptotic Estimation Long-Range Dependence

Characteristics of wind-sand transportation along railways in the eastern fringe of the Taklimakan Desert and sand control system

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Transportation Safety and Environment 2024年第3期6卷 152-166页

作者： hongguang Dong Jianjun Cheng Benteng Ma Yupeng li Yuanqing Chen College of Water Conservancy&Architectural Engineering Shihezi UniversityShihezi 832003Xinjiang Uygur Autonomous RegionChina

This paper focuses on the Korla-Ruoqiang desert railway line,utilizing ERAS(ERA5 is the fifth generation of ECMWF(European Centre for Medium-Range Weather Forecasts)atmospheric reanalysis global climate data)wind data to conduct a comprehensive analysis of the wind energy environment along the line in all aspects,reveals the characteristics of wind-sand transport,and puts forward the countermeasures to prevent and control wind-sand *** results of the study indicate that:(1)the wind-sand along the line mainly occurs in the spring and summer seasons,and the dominant sand-moving directions are easterly(ENE,E and NNE)and northeasterly(NE).(2)The average annual sand-moving wind speed ranges from 5.80 m/s to 7.25 m/s,and the annual frequency of sand-moving ranges from 11.99%to 37.26%.(3)The annual sand drift potential(DP)along the line ranges from 69.20 VU to 607.24 VU,with three types of wind energy environments:low,medium and *** resultant drift potential(RDP)ranges from 45.52 VU to 547.49 VU,and the wind variability index(RDP/DP)is between 0.54 and 0.90.(4)The average sand transport quantity along the line ranges from 2.92 m^(3)/m/a to 9.09 m3/m/*** on these results,we optimize the sand blocking,sand fixing and wind erosion prevention measures for different types of wind-sand environments,establish a scientific and efficient wind-sand protection and control system to solve the wind-sand problems and provide a scientific foundation for the prevention and control of wind-sand disasters along the line.

关键词： desert railway wind energy environment sand-moving speed sand transport activities sand control system