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The impacts of evaluation indices and normalization methods on E-TOPSIS optimization of return vent height for an impinging jet ventilation system

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Building Simulation 2022年第12期15卷 2081-2095页

作者： Chao Qin shi-Hai wu Hong-Qiang Fang Wei-Zhen Lu Department of Architecture and Civil Engineering City University of Hong KongHong KongChina School of Architecture and Art Central South UniversityChangshaChina

Stratified air distribution(STRAD)systems have been intensively investigated in recent decades for their energy-saving potential and good indoor air quality ***,the evaluation indices used to optimize STRAD systems and the normalization methods for weight calculation vary from one research to *** study aims to investigate the impacts of evaluation indices on the optimal return vent height of a room cooled by an impinging jet ventilation system(one type of STRAD system).The effects of several widely used normalization methods(i.e.,vector normalization,sum normalization,min-max normalization,and no normalization)on indices weights are *** evaluation indices are cooling coil load(Q_(coil)),energy-saving potential(ΔQ_(coil)),mean age of air(MAA),CO_(2) mass fraction,temperature difference between the head and ankles(ΔT_(0.1-1.1)),predicted mean vote(PMV),predicted percentage of dissatisfied(PPD),and draft rate(DR).The multi-criteria optimization method is the entropy-based technique for order preference by similarity to ideal solution(E-TOPSIS).As a result,the min-max normalization method evens the weight of each index and results in unreasonable relative ***,the raw matrix(i.e.,the normalization is omitted)is suggested for weight *** these indices,ΔT_(0.1-1.1) and PPD play critical ***ΔT_(0.1-1.1),the optimal return vent height changes from mid-level to near-floor,while without PPD,it changes to *** important result is that the Q_(coil) plays the most trivial role,followed by MAA and ***,the optimal return vent height is not determined by energy-saving performance but by performances of thermal comfort.

关键词： evaluation indices normalization method impinging jet ventilation return vent height E-TOPSIS

Spinal release of the amino acids with a time course in a rat model of postoperative pain

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Chinese Medical Journal 2007年第22期120卷 1969-1974页

作者： WANG Yun YUE Yun shi Lin wu An-shi FENG Chun-sheng NI Cheng Department of Anesthesiology Beijing Chaoyang Hospital Capital Medical University Beijing 100020 China Department of Anesthesiology Flemish Free University Medical Center Brussels 1090 Belgium Department of Anesthesiology First Hospital Jilin University Changchun 130000 China Department of Anesthesiology Peking University Third Hospital Beijing 100067 China

Background The mechanisms underlying postoperative pain remain unclear. Neurotransmitters of excitatory and inhibitory amino acids play an important role in the transmission and modulation of pain in the spinal dorsal horn. This study aimed to investigate the changes of release of excitatory and inhibitory amino acids in the spinal cord during postoperative pain and to provide a novel theoretical basis for postoperative pain management. Methods Loop microdialysis catheters were implanted subarachnoidally via the atlanto-occipital membrane in 16 healthy Sprague-Dawley rats. All rats without neural deficits were divided into two groups, Group A and Group B, following 5 days of recovery. The tubes for microdialysis were connected and 25 μl microdialysate sample for baseline value was collected after one-hour washout in each rat. A plantar incision in the right hind paws of rats in Group A were performed under 1.2% isoflurane. All rats in Group B were only anesthetized by 1.2% isoflurane for the same duration. The microdialysate samples were collected at 3 hours, 1 day, 2 days and 3 days after the incision （or isoflurane anesthesia in Group B） in both groups. The cumulative pain scores were also assessed at the above time-points. The amino acids in the microdialysate samples were tested using high performance liquid chromatography. Results Within Group A, the release of aspartate and glutamate at 3 hours after the incision was significantly higher than the baseline values and the release of glycine at 1 day after the incision significantly increased compared with the baseline values （P〈0.01）. Within Group B, the release of neurotransmitters at each time point had no significant difference compared with the baseline values （P〉0.05）. The release of aspartate and glutamate at 3 hours after the incision in Group A was significantly higher than that in Group B （P〈0.01）. The release of glycine at 1 day after the incision in Group A significantly increased compared with Gr

关键词： postoperative pain amino acids spinal cord

“三全育人”视域下课程思政的教学设计与探索——以“化工安全与环保”课程为例

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教育教学论坛 2024年第3期 25-28页

作者：张乐吴世逵林存辉广东石油化工学院化学工程学院广东茂名525000

在“三全育人”视域下,以高校专业课程“化工安全与环保”为例,在教学设计中融入课程思政元素,以全面培养学生的思想道德素质和社会责任意识,提高他们的综合能力和创新能力。此外,教学内容和教学方法选择的多样化和灵活化,可以更好地适... 详细信息

在“三全育人”视域下,以高校专业课程“化工安全与环保”为例,在教学设计中融入课程思政元素,以全面培养学生的思想道德素质和社会责任意识,提高他们的综合能力和创新能力。此外,教学内容和教学方法选择的多样化和灵活化,可以更好地适应学生的特点和需求。通过合理的教学设计与探索,以多主体、多环节、多要素共同参与的作用形式,能够较好地实现“全员育人、全程育人、全方位育人”在高校专业课程思政教学中的有效实施。

关键词：三全育人教学设计课程思政化工类专业课

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“四史”教育融入高职思政课教学存在的问题

教育教学论坛 2024年第22期 41-44页

作者：贺维李仕武贺冰心湖南环境生物职业技术学院马克思主义学院湖南衡阳421005

本文探讨了在高职思政课教学中融入“四史”教育所面临的问题和挑战。首先,介绍了“四史”教育的内涵,包括党史、新中国史、改革开放史和社会主义发展史。然后,对高职思政课的主要内容进行了概述,包括思想道德与法治以及国家和时事政策... 详细信息

本文探讨了在高职思政课教学中融入“四史”教育所面临的问题和挑战。首先,介绍了“四史”教育的内涵,包括党史、新中国史、改革开放史和社会主义发展史。然后,对高职思政课的主要内容进行了概述,包括思想道德与法治以及国家和时事政策。接着,分析了高职思政课教学融入“四史”教育存在的问题,包括课程设置与资源整合不足、教师把握程度不一、教学方法单一化和效果评估体系不健全等。最后,提出了优化对策,包括优化课程体系、整合教学资源、加强师资培训、改革教学方法和建立健全评估体系,以期提高高职思政课教学的质量和效果,更好地融入“四史”教育,培养学生的综合素养和国家认同感。

关键词：四史教育高职思政课教学问题优化对策课程整合

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极寒状态下扣件胶垫刚度温变特性及影响

今日自动化 2024年第2期 72-74页

作者：王健吴事邹小霞晋亿实业股份有限公司浙江嘉兴314100

文章利用配备温度控制箱的万能试验机,分析极寒状态下扣件胶垫刚度温变的特性,通过车辆–轨道耦合动力学模型,描述扣件胶垫刚度对高速铁路运行过程中动力响应性能的影响。研究使用视域分析法,分别针对极寒和常温状态下的扣件胶垫刚度变... 详细信息

文章利用配备温度控制箱的万能试验机,分析极寒状态下扣件胶垫刚度温变的特性,通过车辆–轨道耦合动力学模型,描述扣件胶垫刚度对高速铁路运行过程中动力响应性能的影响。研究使用视域分析法,分别针对极寒和常温状态下的扣件胶垫刚度变化,对高速铁路车辆列车加速度变化率、轮重减载率、轮轨垂向力的影响进行分析,最终提出相应建议。

关键词：扣件胶垫静刚度温变车辆–轨道耦合动力学影响

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高铁扣件弹条疲劳断裂原因分析

今日自动化 2024年第3期 39-40,43页

作者：邹小霞王健吴事晋亿实业股份有限公司浙江嘉兴314100

高铁扣件是钢轨与道床连接的纽带,通常需要弹条进行扣压,能够有效保证高铁轨道的几何形位,避免发生偏移。高铁在行驶过程中,会对钢轨施加动态力,导致钢轨出现变形、振动,引起扣件系统振动,根据相关设计要求,扣件弹条需要满足列车施加在... 详细信息

高铁扣件是钢轨与道床连接的纽带,通常需要弹条进行扣压,能够有效保证高铁轨道的几何形位,避免发生偏移。高铁在行驶过程中,会对钢轨施加动态力,导致钢轨出现变形、振动,引起扣件系统振动,根据相关设计要求,扣件弹条需要满足列车施加在钢轨上的冲击力变化强度,一般为50~300 kN。高铁扣件弹条在长期荷载作用下的断裂情况,会导致高铁轨道寿命缩短,从而影响行车安全,文章以WJ–8型弹条为研究对象,对其疲劳断裂原因进行分析,明确其结构参数与相应特性之间的关联,从而实现参数优化与改进。

关键词：高铁扣件弹条疲劳断裂

Stereotactic radiation therapy in the era of precision medicine for cancer

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中国应用生理学杂志 2015年第6期31卷 491-497页

作者： Yang CONG shi-kai wu Department of Radiation Oncology Affiliated Hospital of Academy of Military Medical Sciences

Unlike conventional radiation therapy, stereotactic radiation therapy(SRT) is an emerging tumor-ablative radiation technology with a high-dose delivery to targets while dramatically sparing adjacent normal tissues. The strengths of SRT involve noninvasive and short-course treatment, high rates of tumor local control with a low risk of side effects. Although the scientific concepts of radiobiology fail to be totally understood currently, SRT has shown its potential and advantages against various tumors, especially for those adjacent to less tolerable normal organs(spinal cord, optic nerve, bowels, etc.). Nowadays, the clinical efficacy of SRT has been widely confirmed in certain patients, especially for those medically inoperable, unwilling to undergo surgery, medicine ineffective with tumor progression. Moreover, SRT could be properly used as palliative treatment aiming at relieving local symptoms and pain, and eventually achieving a potential survival benefit of several months. However, the weaknesses of SRT relate to inevitable radiation-induced toxicities as well as the inaccessibility of prophylactic irradiation. In general, one flaw cannot obscure the splendor of the jade. The emergence and development of SRT has opened the new era of precision radiation therapy, and SRT will probably step gloriously onto the remarkable stage for precision medicine.

关键词：放射治疗立体定向高精度学时 SRT 手术治疗放射生物学放射性毒性

Joining of SiO2f/SiO2 composite to Nb using Ag-Cu-In-Ti brazing alloys

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Journal of Materials Science & Technology 2020年第15期47卷 13-20页

作者： Bo Chen Wen-Jiang Zou Wen-Wen Li shi-Biao wu Hua-Ping Xiong Xin wu Welding and Plastic Forming Division Beijing Institute of Aeronautical MaterialsBeijing100095China

Three compositions of Ag-Cu-In-Ti system brazing alloys were designed for joining SiO2 f/SiO2 ceramic composite to Nb *** wettability of the three alloys on the composite was studied with the sessile drop *** results showed that after heating at 1073 K for 30 min,they exhibited contact angles of 74°,83° and 86°,*** brazing alloys were fabricated into foils by rapid solidification *** the three brazing filler alloys the joints brazed with AgCu-10 In-5 Ti at 1073 K for 10 min presented the maximum average shear strength of 30.9 *** the brazing process the active element Ti diffused strongly from the filler alloy to the composite surface and a reaction layer with a thickness of 2-3 μm was *** metallurgical bonding was also achieved at the Nb *** interface structure of the joint brazed with the AgCu-10 In-5 Ti alloy can be described as the following sequence:SiO2 f/SiO2→SiO2+Cu3 Ti3 O→SiO2+TiO+Ti5 Si4→Ag(s,s)+(Cu-Ti)→***,for the filler alloy with 4.0 wt% Ti content the joint strength was only 15.8 MPa.

关键词： Joining Composites Strength SiO2

不同营养水平调水对贡湖湾湖区水质及浮游藻类影响的模拟研究

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中国农村水利水电 2024年第8期 8-17页

作者：杨倩倩吴时强吴修锋戴江玉吕学研薛万云南京水利科学研究院江苏南京210029 江苏省环境监测中心江苏南京210036

为探究“引江济太”工程调水给受水湖区水体带来的生态效应,采用水生微宇宙模型进行为期11 d的室内模拟实验,以太湖贡湖湾湖区为受水水体,引入3组设定好的不同营养盐水平(贫营养水平O、中营养水平M、富营养水平E)的望虞河河水,研究在不... 详细信息

为探究“引江济太”工程调水给受水湖区水体带来的生态效应,采用水生微宇宙模型进行为期11 d的室内模拟实验,以太湖贡湖湾湖区为受水水体,引入3组设定好的不同营养盐水平(贫营养水平O、中营养水平M、富营养水平E)的望虞河河水,研究在不同营养盐水平调水影响下,受水水体水生态环境的动态响应过程。结果表明:整个实验过程中,中营养和贫营养调水组的水体TN、NO_(3)^(-)-N、NH4_(+)-N、TP、SRP、TOC含量下降明显,富营养调水组影响效果较中营养和贫营养调水组差;调水提高了受水水体生态系统的多样性和均匀度水平,硅藻等非蓝藻细胞密度增加,蓝藻细胞生长受到竞争胁迫,中营养和贫营养调水的影响作用效果好于富营养水平。RDA分析结果表明,受水水体的pH、DO、SiO_(3)^(2-)-Si、TDS、NO_(3)^(-)-N、SRP是本实验水体影响藻类群落结构的主要环境驱动因子。

关键词： “引江济太”工程贡湖湾水生微宇宙模型浮游藻类群落环境因子

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