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Journal of Iron and Steel Research(International) 2024年第1期31卷 3-23页

作者： Xue-cheng Peng Han-jie guo Xin-fang Zhang Yi-wa Luo Ye Sun Jing guo Rong-guang Yang Xiao-dan Zheng School of Metallurgical and Ecological Engineering University of Science and Technology Beijing(USTB)Beijing100083China Beijing Key Laboratory of Special Melting and Preparation of High-End Metal Materials University of Science and Technology Beijing(USTB)Beijing100083China Beijing Shougang gitane New MATERIALS Co. Ltd.Beijing102206China

Heat-resistant alloys with excellent mechanical properties are widely used in various fields,and further improvement in their properties is essential to meet the requirements in new-generation advanced supercritical boilers,nuclear reactors,superheaters,and other new materials *** effectively enhance the comprehensive performance of heat-resistant alloys,second-phase particle strengthening has been widely studied,and in the face of different service envi-ronments of advanced heat-resistant steels,the selection of suitable second-phase particles is essential to maximize the performance of these *** this end,three major types of reinforcing phases in heat-resistant alloys such as carbides,rare earth oxides,and intermetallic compounds are summarized.A comparative analysis of the precipitation behavior of the reinforcing phases with different types as well as the risks and means of controlling their use in service,is *** parameters for the application of various types of second-phase particles in heat-resistant alloys are provided to support the design and preparation of new ultrahigh-performance heat-resistant alloys.

关键词： Heat-resistant alloy Second-phase particle Carbide Rare earth oxide Intermetallic compound Strengthening

A near-zero quiescent power breeze wake-up anemometer based on a rolling-bearing triboelectric nanogenerator

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Microsystems & Nanoengineering 2024年第2期10卷 241-249页

作者： Xianpeng Fu Zhichao Jiang jie Cao Zefang Dong guoxu Liu Meiling Zhu Chi Zhang CAS Center for Excellence in Nanoscience Beijing Key Laboratory of Micro-nano Energy and SensorBeijing Institute of Nanoenergy and NanosystemsChinese Academy of SciencesBeijing101400China School of Nanoscience and Engineering University of Chinese Academy of SciencesBeijing100049China Center on Nanoenergy Research Guangxi Colleges and Universities Key Laboratory of Blue Energy and Systems IntegrationSchool of Physical Science&TechnologyGuangxi UniversityNanning530004China Institute of Intelligent Flexible Mechatronics Jiangsu UniversityZhenjiang212013China College of Engineering Mathematics and Physical ScienceUniversity of ExeterExeterEX44QFUK

Wind sensors have always played an irreplaceable role in environmental information monitoring and are expected to operate with lower power consumption to extend service ***,we propose a breeze wake-up anemometer(B-wa)based on a rolling-bearing triboelectric nanogenerator(RB-TENg)with extremely low static *** B-wa consists of two RB-TENgs,a self-waking-up module(SWM),a signal processing module(SPM),and a wireless transmission *** two RB-TENgs are employed for system activation and wind-speed *** the ambient wind-speed exceeds 2 m/s,the wake TENg(W-TENg)and the SWM can wake up the system within 0.96 *** the same time,the SPM starts to calculate the signal frequency from the measured TENg(M-TENg)to monitor the wind speed with a sensitivity of 9.45 Hz/(m/s).After the wind stops,the SWM can switch off the B-wa within 0.52 s to decrease the system energy *** quiescent on-duty mode,the operating power of the B-wa is less than 30 nW,which can greatly extend the service lifetime of the *** integrating triboelectric devices and rolling bearings,this work has realized an ultralow quiescent power and self-waked-up wireless wind-speed monitoring system,which has foreseeable applications in remote weather monitoring,IoT nodes,and so on.

关键词： generator power service

CFD simulation of pumping ventilation in a three-story isolated building with internal partitioning:Effects of partition widths,heights and locations

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Building Simulation 2024年第2期17卷 267-284页

作者： Huai-Yu Zhong jie Sun Chao Lin Song-Heng Wu Jin Shang Hideki Kikumoto Fu-Ping Qian Carlos Jimenez-Bescos Fu-Yun Zhao School of Energy and Environment Anhui University of TechnologyMa-An-ShanAnhui Province243002China State Key Laboratory of green Building in Western China Xi’an University of Architecture&TechnologyXi’anShaanxi ProvinceChina School of Power and Mechanical Engineering Wuhan UniversityWuhanHubei Province430072China Institute of Industrial Science The University of Tokyo4-6-1 KomabaMeguro-kuTokyo153-8505Japan School of Built and Natural Environment University of DerbyDerbyUK

Pumping ventilation(PV),a special single-sided ventilation(SSV),has been certified as an effective strategy to improve the air exchange rate of ***,most studies targeted on the single space,and few studies have been focused on the effect of internal partitioning on *** paper aims to evaluate the ventilation performance of PV influenced by different configurations of internal *** fluid dynamics(CFD)simulation was used to predict the flow fields and ventilation *** width(w/H),height(h/H)and location(d/H)are the three main internal partition parameters considered in this *** simulation results showed that the total,mean and fluctuating ventilation rates all decrease with wider internal *** normalized total ventilation rate decreases by 7.6%when w/H is increased from 50%to 75%.However,the reduction rate is only 0.23%between w/H=0 and 25%,and only 0.61%between w/H=25%and 50%.The ventilation rate is hardly reduced by increasing the partition width when w/Hgreatly reduced by wider partition for w/H>50%.Increasing the partition height will reduce the mean ventilation rate but promote the fluctuating and total ventilation rate in some *** increase of total ventilation rate by 1.4%is observed from h/H=50%to 75%.The ventilation rate is larger when the internal partition is attached to the leeward or windward *** total,mean and fluctuating ventilation rates for d/H=50%are relatively higher than d/H=0 by 1.5%,3.1%and 0.8%,*** the internal partition should be mounted attached to the windward wall so as to obtain the greatest pumping ventilation *** periodicity of pumping flow oscillation and pumping frequency are independent of the partition *** peak power of pumping flow is the lowest for the widest internal partition and is negatively affected by the partition height,but it generally has a positive correlation with the distance between the partition and leeward wa

关键词： pumping ventilation single-sided ventilation internal partitioning periodic oscillation ventilation rate

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离轴超构透镜设计与特性分析

中国光学（中英文） 2024年第1期17卷 52-60页

作者：胡金高娃赵尚男王灵杰叶昊坤张建萍张新中国科学院长春光学精密机械与物理研究所吉林长春130033 中国科学院大学北京100049

本文提出了一种离轴超构透镜的设计方法,并分析了不同数值孔径、离轴角度等参数对于离轴超构透镜的光谱分辨率、聚焦效率以及仿真结果的影响。利用Lumerical软件分别仿真了参数为NA=0.408、α=13°;NA=0.180、α=13°及NA=0.408α=20°... 详细信息

本文提出了一种离轴超构透镜的设计方法,并分析了不同数值孔径、离轴角度等参数对于离轴超构透镜的光谱分辨率、聚焦效率以及仿真结果的影响。利用Lumerical软件分别仿真了参数为NA=0.408、α=13°;NA=0.180、α=13°及NA=0.408α=20°等多个离轴超构透镜。仿真结果表明:离轴角度与光谱分辨率大小成正相关,离轴角度越大,光谱分辨能力越强,但聚焦效率越低;数值孔径越小,相位分布的覆盖范围越小,会导致仿真聚焦位置与理论值偏差变大。设计者需要根据需求合理平衡数值孔径、离轴角度等参数,最终实现理想效果。本文得出的结论对离轴超构透镜的理论分析和实际应用中的参数设计具有重要参考价值。

关键词：超构透镜离轴超构透镜仿真分析

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强化厌氧表达dld基因以提高大肠杆菌工程菌发酵产L-乳酸的光学纯度

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中国酿造 2024年第8期43卷 115-121页

作者：余杰李正王金华王永泽高娃赵筱湖北工业大学生命科学与健康工程学院湖北武汉430068 湖北工业大学发酵工程教育部重点实验室湖北武汉430068 湖北工业大学工业发酵省部共建协同创新中心湖北武汉430068

为去除廉价发酵原料中的D-乳酸从而提高发酵最终产物L-乳酸的光学纯度,该研究通过构建带有不同厌氧诱导启动子(pflBp6、pnirB、pflBp6-pnirB)的D-乳酸脱氢酶基因(dld)的表达质粒,并将其分别转入大肠杆菌(Escherichia coli)HBUT-L,加强... 详细信息

为去除廉价发酵原料中的D-乳酸从而提高发酵最终产物L-乳酸的光学纯度,该研究通过构建带有不同厌氧诱导启动子(pflBp6、pnirB、pflBp6-pnirB)的D-乳酸脱氢酶基因(dld)的表达质粒,并将其分别转入大肠杆菌(Escherichia coli)HBUT-L,加强其在发酵产L-乳酸的同时消除外源D-乳酸的能力。通过装液量与转速的单因素试验筛选最优的质粒表达条件及菌株,并在无机盐培养基与玉米浆培养基中进行发酵验证。结果表明,在装液量为200 mL/250 mL、转速为150 r/min的条件下,含有启动子pflBp6-pnirB的表达质粒的工程菌株HBUT-L4发酵18 h时D-乳酸脱氢酶活力最高,为81.1 U/g。在此条件下进行无机盐培养基和玉米浆培养基发酵时,工程菌株HBUT-L4相对于出发菌株HBUT-L,D-乳酸消耗速率分别提高250%、217%,L-乳酸的光学纯度分别从96.32%、98.48%提升至99.95%、99.98%。在大肠杆菌工程菌发酵L-乳酸的过程中,带有厌氧诱导启动子pflBp6-pnirB的表达质粒可提高D-乳酸脱氢酶活力,强化菌株消除外源D-乳酸,进而提高L-乳酸的光学纯度的能力,具有重要的工业化应用价值。

关键词： L-乳酸光学纯度启动子 D-乳酸脱氢酶基因大肠杆菌

5种中草药提取液对糙皮侧耳发酵产麦角硫因的影响

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中国食品添加剂 2024年第7期35卷 1-8页

作者：刘雨陈思宇余杰高娃谢爱娣湖北工业大学生物工程与食品学院武汉430068 工业发酵省部共建协同创新中心武汉430068 湖北工业大学工程技术学院武汉430068

为了提高食用菌液体发酵产麦角硫因的产量,以糙皮侧耳(Pleurotus ostreatus)P105为发酵菌种,探讨了五种中草药提取液(党参、茯苓、薏苡仁、枸杞子和甘草)对其摇瓶发酵的影响。通过分析测定菌丝体生物量和麦角硫因产量,发现添加中草药复... 详细信息

为了提高食用菌液体发酵产麦角硫因的产量,以糙皮侧耳(Pleurotus ostreatus)P105为发酵菌种,探讨了五种中草药提取液(党参、茯苓、薏苡仁、枸杞子和甘草)对其摇瓶发酵的影响。通过分析测定菌丝体生物量和麦角硫因产量,发现添加中草药复配提取液的效果明显优于对照组,其中添加枸杞子和党参的复配提取液最佳,菌丝体生物量为25.89 g/L,高于对照组7.31 g/L,麦角硫因产量为7.67 mg/L,高于对照组1.85 mg/L。利用响应面分析法,优化发酵工艺参数,得到最佳发酵条件:枸杞子/党参提取液添加比例为2.1∶1,pH 6.5,转速165 r/min,接种量8%。在此条件下,麦角硫因产量可达到8.53 mg/L,比优化前提高了4.61倍。本研究为利用中草药提取液促进糙皮侧耳发酵生产麦角硫因提供了新的思路和理论依据。

关键词：麦角硫因中草药液体发酵响应面法

The mechanistic study on wa medicine Niang-Mu-Liang medicinal liquor mitigating diabetes mellitus erectile dysfunction in rats by inhibiting ferroptosis

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Integrative Medicine Discovery 2024年第10期8卷 1-5页

作者： Yu-Ming wa.g Rui Qian Xue-Hua Xie Yao Chen Huan-Tian Cui Wei-Bo Wen jie Zhao graduate School Tianjin University of Traditional Chinese MedicineTianjin 301617China The First Affiliated Hospital Yunnan University of Chinese MedicineKunming 650500China

Background:This study aims to investigate the therapeutic effect of wa medicine Niang-Mu-Liang medicinal liquor(NML)on rats with diabetes mellitus erectile dysfunction(DMED)and its impact on the ferroptosis signaling ***:Thirty Sprague-Dawley rats were randomly divided into three groups:Control,DMED,and *** establishing the DMED model,treatments were administered for 8 *** the administration,apomorphine hydrochloride tests were conducted to measure the mass and organ index of testes and epididymides,sperm concentration and viability in each *** corpus cavernosum tissues were stained with hematoxylin and *** oxide and cyclic guanosine monophosphate levels in the penile corpus cavernosum tissues were determined using biochemical kits and enzyme-linked immunosorbent assay,while the expression of proteins related to the ferroptosis signaling pathway was measured by Western ***:Compared to the DMED group,the DMED rats treated with NML showed significantly increased erection frequency,testicular and epididymal mass and index,sperm count and viability,along with noticeable improvement in the pathological morphology of penile corpus *** content of nitric oxide and cyclic guanosine monophosphate,and the expression of ferritin heavy chain,ferritin light chain,and glutathione peroxidase 4 proteins in penile corpus cavernosum tissue were elevated,while the expression of transferrin and STEAP3 proteins was ***:NML can improve erectile function in DMED rats by inhibiting the ferroptosis signaling pathway.

关键词： Niang-Mu-Liang medicinal liquor diabetes mellitus erectile dysfunction nitric oxide/cyclic guanosine monophosphate ferroptosis

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响应面法优化草本风味核桃加工工艺

保鲜与加工 2024年第3期24卷 47-52,60页

作者：包永华吕杰李煌俊浙江经贸职业技术学院浙江杭州310018 浙江巨邦高新技术有限公司浙江杭州310018

为研制草本风味即食手剥核桃,以新疆纸皮核桃为原料,着重对杀青条件、浸泡和烘烤条件进行研究。以单因素试验为基础,选择浸泡时间、烘烤温度和烘烤时间3个影响因素的水平,根据BoxBenhnken试验设计,以感官评分为响应值,运用响应面法确定... 详细信息

为研制草本风味即食手剥核桃,以新疆纸皮核桃为原料,着重对杀青条件、浸泡和烘烤条件进行研究。以单因素试验为基础,选择浸泡时间、烘烤温度和烘烤时间3个影响因素的水平,根据BoxBenhnken试验设计,以感官评分为响应值,运用响应面法确定草本风味手剥核桃最优工艺条件。结果表明,核桃的最佳杀青条件为80℃杀青8 h。通过响应面分析建立的回归模型显著,各因素对核桃感官评分的影响顺序为烘烤温度>烘烤时间>浸泡时间。确定草本手剥核桃最佳工艺条件为:烘烤温度80℃,烘烤时间7 h,浸泡时间2.5 min。按照优化的工艺条件加工的草本风味核桃感官品质最佳,核桃色泽美观,核桃仁金黄,草本风味佳,无苦涩味,口感酥脆。研究结果为核桃制品的开发及其产业化利用提供了技术支撑。

关键词：响应面法草本风味核桃工艺优化

Pathogenesis and treatment of diabetes mellitus-related erectile dysfunction: current therapies and potential challenges

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Clinical Research Communications 2024年第2期7卷 11-17页

作者： Han-Yu He# Fan-Yu Meng Huan-Tian Cui Jun-Yu Luo Si-Qi Ma Wei-Bo Wen jie Zhao First Clinical Medical College Yunnan University of Chinese MedicineKunming 650500China Department of Endocrinology The First Affiliated Hospital of Yunnan University of Chinese MedicineKunming 650021China.

Erectile dysfunction(ED)is one of the important complications of diabetes,which is very common in diabetic patients,affecting more than half of male patients,and the incidence of the disease is about 3.5 times that of the normal *** pathogenesis of diabetic erectile dysfunction(DMED)is complex,involving nerve,vascular,endocrine,muscular and psychological *** present,the therapeutic approaches of DMED include drug therapy,surgery,physical therapy and so *** article provides a review of current research on the pathogenesis and treatment of *** elucidation of the pathogenesis of DMED and the development of new therapeutic approaches are of great significance for the prevention and treatment of DMED.

关键词： diabetes mellitus(DM) erectile dysfunction(ED) pathogenesis therapies

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喷气燃料烃类组成与性质构效关系研究进展

石油学报（石油加工） 2024年第1期40卷 258-265页

作者：蔡璐舒亦桥陶志平赵杰伏朝林中石化石油化工科学研究院有限公司北京100083

通过喷气燃料分子水平研究和表征,掌握喷气燃料烃类组成,进而与理化性质进行构效联系,对喷气燃料性质预测、快评技术研发和高性能喷气燃料设计等具有重要指导作用。综述了喷气燃料的燃烧性、挥发性、低温流动性、安定性、润滑性、导电... 详细信息

通过喷气燃料分子水平研究和表征,掌握喷气燃料烃类组成,进而与理化性质进行构效联系,对喷气燃料性质预测、快评技术研发和高性能喷气燃料设计等具有重要指导作用。综述了喷气燃料的燃烧性、挥发性、低温流动性、安定性、润滑性、导电性、洁净性和燃料烃类组成与常规理化性质的定性关联规律,归纳了具有代表性的定量关系模型。总结了燃料的化学组成分析手段,认为全二维气相色谱应用于喷气燃料烃族及碳数分布等分子水平表征更准确。展望了预测模型的开发方向,指出相比于现有多元线性回归(MLR)、加权平均(wa)、偏最小二乘(PLS)、修正加权平均(Mwa)、支持向量机(SVM)等建模方法,人工神经网络(ANN)是未来定量关系模型的研究重点。

关键词：喷气燃料烃类组成理化性质数学模型