化学镀非晶态Ni—B合金的研究

本文通过化学镀方法在铜和钢上沉积非晶态Ni-B合金。着重讨论了还原剂浓度、络合剂浓度对化学镀沉积速率的影响;分析了它的耐蚀原因和其显微硬度随退火温度的变化情况并就其应用和发展略作说明。     

清华屏蔽实验反应堆中子注量率能谱的调节和测量

叙述了采用多种屏蔽过滤方法,通过实验获得多种条件下的中子注量率能谱的调节和测量。     

光纤的淬冷增强原理

本文从拉丝工艺技术的角度出发，讨论了高速、高温拉丝工艺方法对光纤的淬冷增强原理。     

Penicilloyl peptides are recognized as T cell antigenic determinants in penicillin allergy

Although hapten immune responses have been intensively studied in the mouse, very little is known about hapten determinants involved in human allergic reactions. Penicillins, as chemically reactive compounds of low molecular weight, constitute typical examples of hapten allergens for humans. Penicillins become immunogenic only after covalent binding to carrier proteins and in this form frequently induced IgE-mediated allergic reactions in patients subjected to antibiotic treatment. However, our previous data strongly indicated that penicillins also form part of the epitopes contacting the antigen receptors of beta lactam-specific T cells in allergic individuals. We have therefore investigated the molecular constraints involved in the T cell immune response to penicillin G (Pen G). Designer peptides containing a DRB1*0401-binding motif and covalently modified with Pen G via a lysine epsilon-amino group were found to induce proliferation of Pen G-specific T cell clones. A precise positioning of the hapten molecule on the peptide backbone was required for optimal T cell recognition. Furthermore, we extended these observations from our designer peptides to show that a peptide sequence derived from a natural DRB1*1101-binding peptide modified in vitro with Pen G, also acquired antigenic properties. Our data for the first time provide insight into the manner in which allergenic haptens are recognized by human T cells involved in allergic reactions to drugs and suggest possible mechanisms leading to the onset of these adverse immune responses.     

可视化基站发电管理系统

针对以前的发电管理系统或只是数据呈现,提供市电及发电相关数据信息,或只是提供出车轨迹,主要实现对出车的管理,不能全面反应发电全过程且不便于对发电事件进行分析的情况,提出可视化发电管理系统的概念。在简要介绍了LBS系统、动力环境监控系统后,讲述了可视化基站发电管理系统的组成以及通过LBS定位管理、短信互动、实时监测数据等进行系统实现。可视化发电管理系统通过可视化的界面帮助发电管理人员进行管理,直观、便捷。     

稻壳基碳量子点对废水中Pb(Ⅱ)的检测

为了进一步实现生物质废弃资源的综合利用,以及对废水中污染物的检测,以稻壳粉为原料,在600℃和N2氛围下煅烧完成后使用一步水热法制备了钝化剂修饰的碳量子点,得到荧光为蓝绿光的二酸铵(ACA-CQDs)改性稻壳基碳量子点.采用SEM/EDS、HRTEM、FTIR等现代分析技术对碳量子点进行了理化特性表征,发现二酸铵(ACA-CQDs)量子点可以成功检测水中的Pb(Ⅱ).建立了一种有效的检测水体中Pb(Ⅱ)简便快速高效的方法.     

新时代技校学生思想政治教育新体系:"德心体"融合模式

本文以新时代技校学生思想政治教育新模式为分析对象,首先介绍融合背景及融合必要性,接着阐述融合方式,最后分析了融合发展前景,以便可以有序推动德育、心育与体育相互融合,创新学生思想政治教育模式,提高学生思想境界,促进学生健康全面发展.     

环丙基砜衍生物的合成研究

在温和的碱性条件下,以TosMIC为砜源,对2-酰基-1-氯环丙烷羧酸酯的区域进行选择性加成,直接合成具有潜在生物活性的环丙基砜类化合物,产率可高达85％,非对映选择性可超过20:1.研究结果首次证明了TosMIC与缺电子环丙烯的亲核加成反应.     

涡流检测技术在宝钢热轧轧辊上的应用

介绍了轧辊涡流检测仪的工作要求、设备组成和使用方法,指出对轧辊进行涡流检测可防止爆辊,减少轧辊磨削量。