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黑龙江环境通报 2024年第1期37卷 106-108页

作者：矫玲宿迁景美环境技术有限公司江苏宿迁223800

本文主要研究氢能燃料电池动力系统制造项目环境影响评价过程中的技术问题,针对氢能燃料电池动力系统生产过程中主要的环境污染问题,明确提出具体有效的污染防治、环境风险防范等环境保护措施,为同类项目污染治理提供参考借鉴。

关键词：氢能燃料电池动力系统生产工艺及产污环节污染控制

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基于SDN的数据中心网络流量负载均衡研究

云南大学学报（自然科学版） 2024年第1期46卷 45-52页

作者：王灵矫李文郭华湘潭大学自动化与电子信息学院湖南湘潭411105 湘潭大学智能计算与信息处理教育部重点实验室湖南湘潭411105

目前数据中心网络(data center network,DCN)的负载均衡方法存在对大小流的调度缺乏全局实时检测等不足,部分大流会造成拥塞、负载不均衡和带宽碎片等问题.针对上述问题,提出了一种SDN网络流量负载均衡算法—DSA-D.首先,对流量进行分类... 详细信息

目前数据中心网络(data center network,DCN)的负载均衡方法存在对大小流的调度缺乏全局实时检测等不足,部分大流会造成拥塞、负载不均衡和带宽碎片等问题.针对上述问题,提出了一种SDN网络流量负载均衡算法—DSA-D.首先,对流量进行分类,为大流计算所有源至目的主机可达路径的最短跳数路径集;然后,根据LLDP和ECHO测量链路时延以求得时延最优路径集;最后,采用概率拟合算法分配路径,实现数据中心网络流量负载均衡.在相同场景下的实验结果表明,与ECMP、Hedera和DIFF算法相比,DSA-D算法具有更好的吞吐量、链路带宽利用率和平均往返时延.

关键词：软件定义网络数据中心时延优化负载均衡

基于载荷谱分析和混合深度学习车载储氢气瓶路况载荷模式识别

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噪声与振动控制 2024年第4期44卷 205-210,277页

作者：李淳胡越鞠宽焦玲高阳华东理工大学上海市智能感知与检测技术重点实验室上海200237 华东理工大学机械与动力工程学院上海200237 卓然(靖江)设备制造有限公司江苏靖江214500 华中科技大学武汉光电国家研究中心武汉430074

氢燃料电池汽车在行驶过程中受路况影响产生振动,引起的振动载荷可能导致车载气瓶产生表面损伤,直接影响气瓶的使用安全和效率。针对储氢气瓶路况载荷数据分布不平衡导致载荷识别效果不佳的问题,提出一种改进深度卷积生成模型(Deep Conv... 详细信息

氢燃料电池汽车在行驶过程中受路况影响产生振动,引起的振动载荷可能导致车载气瓶产生表面损伤,直接影响气瓶的使用安全和效率。针对储氢气瓶路况载荷数据分布不平衡导致载荷识别效果不佳的问题,提出一种改进深度卷积生成模型(Deep Convolutional Generative Adversarial Networks,DCGAN)结合卷积神经网络(Convolutional Neural Network,CNN)的路况振动载荷识别方法。DCGAN可以实现样本扩充,提高模型的识别性能。同时,针对DCGAN的卷积计算只能处理相邻数据特征的问题,将自注意力机制(Self Attention,SA)引入DCGAN中,自注意力机制可以计算样本的特征点之间的关系,帮助DGCAN的生成器充分学习样本的全局特征,增强模型泛化性。最后通过CNN实现载荷识别。通过实验对提出模型进行测试,并与多种模型比较;实验结果表明,提出的模型对路况振动载荷识别准确率达到96.3%,与其他模型相比,该模型表现出更好的性能。

关键词：振动与波路况识别数据增强生成对抗网络自注意力机制模式识别

模糊数学感官评价结合响应面法优化腌醋椒工艺配方

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中国调味品 2024年第8期49卷 113-119,132页

作者：杜亚飞李维刘绪焦玲吴婷成都师范学院化学与生命科学学院成都611130 特色园艺生物资源开发与利用四川省高等学校重点实验室成都611130

以巴塘辣椒为原料制作腌醋椒,运用模糊数学感官评价结合响应面法对腌醋椒的工艺配方进行优化。利用单因素试验和Plackett-Burman试验设计筛选影响腌醋椒感官品质的关键因素,在此基础上,以模糊数学感官评分和质构指标为响应值,通过响应... 详细信息

以巴塘辣椒为原料制作腌醋椒,运用模糊数学感官评价结合响应面法对腌醋椒的工艺配方进行优化。利用单因素试验和Plackett-Burman试验设计筛选影响腌醋椒感官品质的关键因素,在此基础上,以模糊数学感官评分和质构指标为响应值,通过响应面试验得出最优工艺配方:以200.0 g辣椒为基准,添加胡椒5.0 g、花椒5.0 g、米醋880.0 g、酱油100.0 g、食盐20.0 g、红糖25.0 g、大蒜50.0 g、腌制时间13 d,在此条件下制作的腌醋椒感官品质最佳,具有浓郁的醋香和椒香,口感爽脆,味道丰富;食盐含量(以NaCl计)为3.18 g/100 g,亚硝酸盐含量为1.95 mg/kg,总酸含量为2.83 g/100 g,均符合相关国标要求。该研究为优化腌醋椒的口感和品质、提高生产效率和产品质量提供了科学的理论依据。

关键词：腌醋椒 Plackett-Burman试验响应面法模糊数学感官评价法质构分析

维普期刊数据库博看期刊

Hydrothermal Synthesis of Pb_(1-1.5x)La_xZr_(0.5)Ti_(0.5)O_3 (x = 0.01-0.06) Nanocrystallites

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Chinese Chemical Letters 2002年第10期13卷 1017-1020页

作者： Xiu ling jiao Dai Rong CHEN Department of Chemistry Shandong UniversityJinan 250100

Nanocrystalline Pb1-1.5xLaZr0.5Ti0.5O3 (x = 0.01-0.06, PLZT) powders with particle size from 30 to 150 nm were hydrothermally synthesized from the gets under mild conditions. The reaction conditions such as La content, reaction temperature and time were studied in detail and optimal conditions were established for synthesizing PLZT powders with different La contents. The effects of La content, alkali concentration, reaction temperature and time on the particle size were studied.

关键词： Hydrothermal synthesis PLZT powder nanocrystallite.

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标准化病人在临床教学中的应用进展与反思

中国标准化 2024年第10期 255-260页

作者：李彤李嘉豪焦凌梅海南医学院海南医学院第二附属医院

本文阐述标准化病人的产生背景、发展现状、选择与分类、实施环节与流程及临床教学效果,总结当前标准化病人在临床教学中的优势与不足,并对今后标准化病人的应用提出展望,以期更好促进临床教学工作的开展。

关键词：标准化病人医学教育评判性思维

维普期刊数据库博看期刊

TRACKING METHODS FOR FREE SURFACE AND SIMULATION OF A LIQUID DROPLET IMPACTING ON A SOLID SURFACE BASED ON SPH

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Journal of Hydrodynamics 2011年第4期23卷 447-456页

作者： LI Da-ming XU Ya-nan LI ling-ling LU Hui-jiao BAI ling State Key Laboratory of Hydraulic Engineering Simulation and Safety School of Civil Engineering Tianjin University Tianjin 300072 China

With some popular tracking methods for free surface, simulations of several typical examples are carried out under various flow field conditions. The results show that the Smoothed Particle Hydrodynamics （SPH） method is very suitable in simulating the flow problems with a free surface. A viscous liquid droplet with an initial velocity impacting on a solid surface is simulated based on the SPH method, and the surface tension is considered by searching the free surface particles, the initial impact effect is considered by using the artificial viscosity method, boundary virtual particles and image virtual particles are introduced to deal with the boundary problem, and the boundary defect can be identified quite well. The comparisons of simulated results and experimental photographs show that the SPH method can not only exactly simulate the spreading process and the rebound process of a liquid droplet impacting on a solid surface but also accurately track the free surface particles, simulate the free-surface flow and determine the shape of the free surface due to its particle nature.

关键词： Smoothed Particle Hydrodynamics (SPH) method viscous liquid droplet impacting on a solid surface free surface

Effect of the microporous structure of ammonium perchlorate on thermal behaviour and combustion characteristics

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Defence Technology（防务技术） 2022年第7期18卷 1156-1166页

作者： Hai-jun Zhang Jian-xin Nie Gang-ling jiao Xing Xu Xue-yong Guo Shi Yan Qing-jie jiao State Key Laboratory of Explosion Science and Technology Beijing Institute of TechnologyBeijing100081China Naval Research Institute of PLA Beijing100161China The Sixth Institute 601 Branch of China Aeronautical Science and Technology CorporationHohhot010076China

Ammonium perchlorate(AP)is the component with the highest content in composite propellants,and it plays a crucial role in propellant *** view of the effects of low-temperature AP thermal decomposition on thermal safety and combustion characteristics,porous ammonium perchlorate(PAP)samples with different mass losses were first prepared by thermal convection heating,and the structures were characterized and ***,the effects of decomposition degree on the thermal decomposition characteristics of PAP were studied by ***,the combustion characteristics of AP/Al binary mixtures were tested with high-speed photography and in a sealed *** results showed that low-temperature decomposition of AP resulted in formation of porous structures for AP *** pores first appeared near the surfaces of the particles and began from multiple points at the same *** pores increased in size to approximately 5 mm and then expanded,and finally,the AP particles were full of *** partial decomposition,the crystal structure of AP remained unchanged,but the low and high decomposition temperatures decreased *** decomposition rate *** to the porous structure of PAP,the combustion rate of the AP/Al system increased obviously with increasing decomposition of *** relationship between the combustion rate and the mass loss was approximately linear under open conditions,and it was exponential for a high-pressure environment.A computational model of the combustion process for the AP/Al binary system was established to explain the effects of pore structure and pressure on the combustion process.

关键词： Microporous structure Ammonium perchlorate Thermal behavior Porosity Combustion characteristics

Inhibition of Bcl-2 enhances the efficacy of epirubicin chemotherapy in PC-3 prostate cancer cells

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Chinese Medical Journal 2011年第23期124卷 4018-4021页

作者： JIANG Hai XIA Dan WU ling-jiao CHEN Zhao-dian Department of Urology First Affiliated Hospital Zhejiang University School of Medicine Hangzhou Zhejiang 310003 China

Background Overexpression of Bcl-2 protein in cancer cells can inhibit programmed cell death and engender chemoresistance. Bcl-2 antisense oligonucleotide （G3139） has shown its antitumor effects enhanced in preclinical models when combined with taxol-based chemotherapy. This study aimed to investigate the efficacy of G3139 combined with epirubicin in the androgen-independent prostate cancer. Methods PC3 prostate cancer cell line was cultured and treated with epirubicin and Bcl-2 antisense oligonucleotide alone or in combination. The effects of therapeutic agents on cells were determined by the MTT assay. Expression of Bcl-2 mRNA and protein was documented by RT-PCR and Western blotting. Apoptosis induction was confirmed by flow cytometric analysis. Results Bcl-2 antisense oligonucleotide alone produced no cytotoxic effects and the combination of Bcl-2 antisense oligonucleotide with epirubicin sensitized PC-3 cells to the killing effects of chemotherapy. A marked down-regulation of Bcl-2 mRNA and protein was observed after antisense and epirubicin cotreatment. A statistically significantly higher fraction of apoptotic cells was detected by flow-cytometric analysis after epirubicin treatment with prior antisense Bcl-2 transfenction, as compared with mono antisense Bcl-2 or epirubicin treatment. Conclusion These data suggested that inhibition of Bcl-2 expression combined with epirubicin may be an attractive therapeutic strateqy in hormone-refractory prostate cancer.

关键词： Bcl-2 antisense prostate cancer molecular therapy

SICA for Cox's Proportional Hazards Model with a Diverging Number of Parameters

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Acta Mathematicae Applicatae Sinica 2014年第4期30卷 887-902页

作者： Yue-Yong SHI Yong-Xiu CAO Yu-ling jiao Yan-Yan LIU School of Mathematics and Statistics Wuhan University

The smooth integration of counting and absolute deviation （SICA） penalized variable selection procedure for high-dimensional linear regression models is proposed by Lv and Fan （2009）. In this article, we extend their idea to Cox＇s proportional hazards （PH） model by using a penalized log partial likelihood with the SICA penalty. The number of the regression coefficients is allowed to grow with the sample size. Based on an approximation to the inverse of the Hessian matrix, the proposed method can be easily carried out with the smoothing quasi-Newton （SQN） algorithm. Under appropriate sparsity conditions, we show that the resulting estimator of the regression coefficients possesses the oracle property. We perform an extensive simulation study to compare our approach with other methods and illustrate it on a well known PBC data for predicting survival from risk factors.

关键词： Cox proportional hazards models penalized partial likelihood diverging parameters oracle prop-erty smoothing quasi-Newton