无氧化炉具有加热效率高、投资与运营成本低、作业率高、表面质量及板型良好、NOx排放相对低等优势,在硅钢热处理领域应用前景广泛.本文阐述了确定无氧化炉(NOF)加热能力详细过程,涵盖炉温、炉断面尺寸、炉长、热平衡结算、加热能力计算等,为今后无氧化炉(NOF)在硅钢热处理应用时的设计提供了借鉴,同时也为今后明火直接加热的工业炉设计提供了参考.

文章利用空气中不同成分在磁场中受力方向不同的原理,提出在燃烧系统中空气侧管路上增设磁场,采用梯度磁场制备富氧空气用于助燃.实验研究了空气侧增设磁场对燃烧的影响.结果表明,增设磁场后炉膛温度有所升高,烟气中残氧量和可燃物质含量均降低,该装置能够大幅度提升可燃物质与氧气的燃烧反应,同时不会增加NOx排放量.

回转式换热器属于热交换设备,具有处理量大、结构紧凑、布置灵活等特点.漏风是影响回转式换热器在运行生产过程中的主要问题,严重影响上下游设备的正常生产和运行.以湖北某钢厂烧结机组为例,研究漏风产生的原因,提出优化建议,通过多个环节减缓设备漏风现象,实现稳定生产并提高经济效益.

介绍了一种超低NOx排放自身预热I型辐射管烧嘴的结构与工作原理.采用热态实验对烧嘴性能进行测试与分析,得出了烧嘴的冷态点火特性曲线、烧嘴在不同燃烧模式下NOx排放水平、火焰稳定性及辐射管表面温度分布.研究烧嘴不同工作模式对NOx排放的抑制作用,得出了从冷态升温到高温应用全过程的NOx排放指标,为该类型烧嘴实现工程应用提供了良好的调试依据,从而确保应用炉窑实现超低NOx排放.

针对热镀锌炉炉鼻子处的多种表面质量缺陷问题,对比不同的技术应用后,采用了基于NH加湿气氛抑制锌蒸汽原理的技术措施进行系统优化.提出了干湿气氛混合优化、气氛再加热、热镀锌加湿系统露点闭环控制及除锌渣装置等4个方面的技术优化,对提高热镀锌带钢质量有较大帮助,其经验与技术措施值得进一步参考借鉴.

基于冷轧不锈钢连续退火工艺及制度分析,对其连续退火炉加热系统进行了设计,通过表面能量平衡方程和能量守恒方程可计算出炉长配置及燃烧功率配置.通过实际算例与实际运行情况对比分析,得到该设计方法是有效的,能够完成从产品大纲、工艺分析基础到机组加热系统集成、布置、设备总体布置的设计过程,为后续冷轧不锈钢连续退火炉加热系统二级模型提供了理论基础.

对自身预热式Ⅰ型辐射管烧嘴结构及NOx生成原因进行介绍,通过热态试验测试对烧嘴降低NOx排放的方法进行分析,得出不同烟气回流率对烧嘴降低NOx排放的影响效果.分析MnOx模式原理,得出烧嘴高温应用MnOx燃烧模式对NOx排放的抑制作用.对比两种不同直径辐射管高温应用NOx排放指标,得出烟气回流和MnOx技术叠加使用时烧嘴高温NOx排放指标.

文章介绍了在内蒙古呼伦贝尔草原上开发并实施的亲子旅游"知行合一"模式的流程,梳理了家长们在旅行中的实际表现,同时从家庭教育学视角提出了在这一模式实施过程中家长和组织者的优化策略.

The fluid flow, heat and mass transfer in the gravitational thermosyphon are very complex, and it is difficult to obtain the detail information in the thermosyphon theoretically or experimentally. Simulation of vapor-liquid two phase flow and heat transfer in a thermosyphon is conducted using the VOF (volume of fluid) model to obtain the whole process which includes the producing, merging, growing and rising of bubbles in the evaporation section, and the forming, merging, sliding and flowing into the liquid pool of droplet in the condensation section. A good agreement is obtained with the experimental measurements by comparing the wall temperatures. The thermal resistance, heat transfer of condenser and thermal efficiency are defined as performance criteria simultaneously to assess the effects of filling ratio and inclination angle on the operating performance. The results show that, in the range of studied parameters, the thermal resistance gradually decreases with the increase of the filling ratio, whereas the heat transfer of condenser increases. The performance of the thermosyphon is better when the initial charge volume of the working fluid is full of evaporation section. Influence of inclination angle on thermal resistance is not obvious, while, the heat transfer of condenser and the thermal efficiency rise as the inclination angle increases.

本文以黄山市统计局2006-2017共12组旅游量作为原始数据,运用一元线性回归法和灰色GM(1,1)预测模型对黄山风景区旅游量数据进行预测.通过进行参数检验和对预测结果进行比较分析,发现一元线性回归法比灰色GM(1,1)预测模型对黄山风景区旅游量具有较好拟合度.最后,对2018-2020年黄山风景区旅游量数据进行了预测,为黄山市相关单位提供决策依据和为其他旅游景区的旅游量预测提供参考.

高炉煤气是钢铁厂高炉炼铁的副产能源,在当今钢铁生产能源结构中占有重要地位.运用数值方法研究了高炉煤气-空气层流预混燃烧的火焰特性,采用详细化学反应机理(53种组分,328个基元反应)描述了高炉煤气-空气的燃烧过程,研究高炉煤气的燃烧特性与燃料性质,为改进高炉煤气燃烧技术,提高高炉煤气利用水平提供了理论依据,对于工程上高炉煤气的高效利用具有重要的指导意义.

在国内旅游快速发展的今天,如何挖掘本地的旅游资源,打好本地旅游品牌,发展乡村旅游已经成为国家及各省的扶贫战略.安徽省2016-2020年乡村旅游扶贫规划中针对蚌埠市乡村旅游扶贫规划有不少政策措施.本文从市场营销角度,特别是网络营销角度分析了蚌埠市现有自然、人文旅游资源、农家乐资源、乡村美食资源及旅行社资源等方面现状及营销状况,总结了其不足之处,构建了乡村振兴旅游扶贫规划中市场营销模式,提出了乡村旅游市场即利基长尾市场,乡村旅游要善于抓住这些网络营销机会,创造属于自己的小众市场.

目的:观察中药药浴治疗小儿外感发热的临床疗效,探讨影响中药药浴疗法退热疗效的关键因素.方法:将64例风寒型外感发热患儿按药浴部位(全身浴和足浴)2个水平、药浴频率(每日1次和每日2次)2个水平、药浴时机(发热时和退热时)2个水平,采用2×2×2多因素多水平析因设计,分为8组,进行洗浴治疗,观察入组后48 h内患儿的体温变化情况,绘制体温曲线图,比较不同药浴部位、不同药浴频率、不同药浴时机的有效率、解热时间和48 h体温曲线下面积.结果:①各组退热率无显著性差异(P＞0.05).②全身浴组和足浴组的解热时间无显著性差异(P＞0.05),发热时药浴组和退热时药浴组的解热时间无显著性差异(P＞0.05),每天1次组和每天2次组的解热时间无显著性差异(P＞0.05);入浴时机×药浴频率,入浴时机×药浴部位,药浴频率×药浴部位的P值均＞0.05,三因素间不存在一级交互作用;入浴时机×药浴频率×药浴部位的P值＜0.05,三因素间存在二级交互作用,发热时每日2次全身浴组(第8组)的解热时间最短.③全身浴和足浴的48 h体温曲线下面积无显著性差异(P＞0.05),每日1次和每日2次药浴的48 h体温曲线下面积无显著性差异(P＞0.05),发热时和退热时药浴的48 h体温曲线下面积无显著性差异(P＞0.05),药浴部位、药浴频率、药浴时机两两之间无一级交互效应(P＞0.05),药浴时机、药浴频率和药浴部位之间存在二级交互效应(P＜0.05),发热时、每日2次、全身浴48 h体温曲线下面积最小.结论:每日2次发热时进行全身药浴的退热效果最佳.

Objective:To observe the effects of different excipients of traditional Chinese medicine on rats with damp-heat diarrhea,to explore secretory immunoglobulin A (SIgA) expression level changes in the intestinal mucosa and serum interleukin-10 (IL-10).Methods:All Wistar rats were first given conventional adaptive feeding for 3 days,then were randomly divided into the control group,the model group,the vinegar-navel group,the honey-navel group,and the vaseline navel group,with 20 rats in each group.After establishing the model by using ETEC vaccine system,the ones in the vinegar-navel group,the honey-navel group,and the vaseline navel group received different excipients for sticking on Shenque acupoint (CV 8).One day and three days later respectively,intestinal tissue immune staining was done,SIgA changes in the intestinal mucosa were measured by using image analysis method,analyzed and compared.Serum IL-10 levels were determined respectively after one day and continuous three days' TCM application on the navel by using radioimmunoassay balance method.Results:According to SIgA in image analysis of intestinal mucosal changes,in terms of integral optical density,compared with the model group,after one day and continuous three days' TCM application on the navel respectively,the vinegar-navel group,the honey-navel group,and the vaseline navel group were all increased;The vinegar-navel group was higher than the honey-navel group,and the vaseline navel group;And all the differences were statistically significant (P ＜ 0.05).Compared with the model group,radioimmunoassay balance method experiment showed that after one day and continuous three days' TCM application on the navel respectively,serum IL-10 in the vinegar-navel group,the honey-navel group,and the vaseline navel group were all increased,especially the vinegar navel group were higher than that of honey paste navel group and vaseline navel group the differences were statistically significant (P ＜ 0.05.Conclusion:In different excipients for preparing Chinese medicine plaster on treatment of rats with damp-heat diarrhea,vinegar navel medicine can promote the repair of intestinal inflammation,and with the increase of application times and time length,its immune influence on rat models increase progressively.

新中国“十七年”时期的儿童电影是“文艺为政治服务”的时代产物,这些影片在叙事层面所呈现出来的特征极其直接地彰显了那个时代的主流意识形态思想内涵.而依据小主人公们所从事的活动,可以将新中国“十七年”时期的儿童电影分为革命型、社会主义建设型和日常生活成长型三种类型,本文将深入探讨这三类儿童影片在叙事上有哪些特征,这些特征又表达了怎样的主流意识形态思想内涵.

Objective Discussion on children with acute respiratory infection clinical nursing effect.Methods Select in my hospital for treatment of children with acute respiratory infections 120 patients were randomly divided into two groups and the control group of 60 cases,the observation group were treated with routine care and integrated care in control group were treated with routine care. Length of hospital stay compared two groups of patients, recovery rates and satisfaction. ResultsObservation group the cure rate was 96.7%, significantly higher than 81.7%, and observation group hospitalization and satisfaction were significantly better than the control group (P <0.05).Conclusion Help children with acute respiratory tract infection after the integrated care of patients recover signiifcantly shorter hospital stays and improve patient satisfaction.

在旅游中所拍摄的影像作品，不仅可以成为反映个体心理状态的投射工具，而且也可以进一步促进个体心理成长。本文通过对某个案旅游时所拍摄的照片的解读，对该个案心理特征进行分析研究，将旅游影像作为一种个体心理自性化的方法进行探索。

Objective Analysis pediatric laryngitis (acute) driven by oxygen inhalation therapy during clinical nursing intervention and effect.Methods Randomly selected 82 cases of children with acute laryngitis patients described, grouped by randomly grouping method, comprehensive care of children with the observation group, the control group of children with the implementation of routine care for two groups of children with clinical nursing intervention for analysis.Results Quality observation of nursing intervention group based care, care and safety, disinfection and isolation, writing instruments and other aspects of care were signiifcantly higher in the two groups were significantly different (P <0.05).Conclusion When children with laryngitis row spray inhaled treatment, combined with a sound comprehensive nursing intervention can signiifcantly improve the quality of nursing intervention in children, worthy of promotion.

马斯洛需要层次理论在一定程度上反映了人类行为和心理活动的共同规律,对高等学校教育教学的创设具有重要的启示作用.在校大学生的需要除了要遵循人类共同的规律之外,还有其自身的特点,教师应着眼于大学生每个层次的需要,努力创设积极的课堂教学环境,充分发挥大学生的主体作用,使大学生不断体验不同层次需要的满足和自我实现的乐趣.

OBJECTIVE To observe the Helicobacter pylori infection in the patients with coronary heart disease and explore the influence of the H .pylori on the serum inflammatory cytokines so as to define the role of the H .pylori in the coronary heart disease .METHODS From Jan 2013 to Jan 2014 ,totally 152 patients with coronary heart dis‐ease ( the coronary heart disease group ) and 90 healthy people (the control group) were enrolled in the study , then the H .pylori and the levels of heat shock protein 60 (HSP60) ,interleukin‐18 ( IL‐18) ,soluble vascular cell adhesion molecule‐1 (sVCAM‐1) ,and high‐sensitivity C‐reactive protein (hsCRP) were determined;the logistic regression analysis was performed for the influencing factors for the coronary heart disease .RESULTS The positive rate of H .pylori was 53 .3% in the coronary heart disease group ,21 .1% in the control group .The levels of the serum HSP60 ,IL‐18 ,VCAM‐1 ,and hsCRP of the coronary heart disease group were significantly higher than those of the control group (P<0 .05) .The levels of the serum HSP60 ,IL‐18 ,VCAM‐1 ,and hsCRP of the coro‐nary heart disease patients positive for H .pylori infection were significantly higher than those of the coronary heart disease patients negative for the H .pylori (P<0 .05) .CONCLUSION The H .pylori infection is closely as‐sociated with the incidence of coronary heart disease ,which may involve in development of coronary heart disease by stimulating the release of inflammatory cytokines .