体验式消费背景下的快闪店空间设计的研究

随着时代的不断发展,人们的消费方式由目的性消费转化为体验式消费,体验式消费已经成为一种流行的趋势.在互联网+的时代下,面对市场竞争日益激烈的现状,商业与艺术结合的文化产物快闪店应运而生.针对体验式消费的不足之处,文章首先采用文献研究法对快闪店空间设计的相关理论研究进行归纳和总结,并对其发展现状以及未来的发展趋势作进...     

Bay117802 抑制羟基喜树碱诱导的人乳腺癌Bcap37 细胞凋亡

目的: 探讨IκB-α磷酸化抑制剂Bay117082 特异性阻断NFκB 信号转导途径对羟基喜树碱(HCPT)诱导Bcap37 细胞凋亡的影响。方法: 采用MTT 法测定细胞的增殖活力;琼脂糖凝胶电泳观察细胞调亡;Western blot 研究细胞调亡所涉及的蛋白表达;DIGEMSA研究NFκB /DNA 结合状况。结果: 5 μmol·L^-1 Bay117082 可以抑制HCPT 对IκB-α的磷酸化, 阻断NFκB 信号转导途径, 阻滞HCPT 诱导的细胞凋亡,同时也抑制HCPT 诱导pro-Caspase3 和Bcl-2 的降解。结论: Bay117082 对HCPT 诱导的乳腺癌细胞凋亡有明显的抑制作用, 其作用机制与NFκB 信号转导途径有关, NFκB 起促进凋亡的作用。     

羟基喜树碱依赖Caspase3途径诱导人乳腺癌Bcap37细胞凋亡

目的: 探讨羟基喜树碱(HCPT)诱导人乳腺癌Bcap37细胞凋亡所涉及的信号转导途径。方法: 采用MTT法测定细胞的增殖活力,琼脂糖凝胶电泳观察细胞调亡,流式细胞仪进行细胞周期分析,Westernblot法研究细胞调亡途径。结果: HCPT对Bcap-37有明显的生长抑制作用。10~100μmol·L^-1HCPT作用细胞后,琼脂糖凝胶电泳检测到典型的DNA梯状条带。Caspase3在细胞凋亡过程中发生降解,Caspase3抑制剂DEVD-CHO可抑制HCPT诱导的Caspase3的降解和细胞凋亡。结论: HCPT对Bcap-37有明显的生长抑制和诱导调亡作用。Caspase3在HCPT诱导人乳腺癌Bcap37细胞调亡中起着重要作用。     

监控继电器-驱动器的保护天使

在工业领域,多系统理念引发了针对单个机器和设备系统的整体思考。这主要涉及能源管理、维护和可用性。在此背景下,监控继电器的地位变得更加重要,该“保护天使”为高效的驱动技术奠定了基础。     

递推Newton-Euler-Luh方程在闭链机器人中的推广

一、引言机器人是一个复杂的动力学系统,要研究这样一个系统,就必须使用一种系统的方法。目前较为常用的动力学方程有:Largrange-Euler方程、Netiwton-Euler方程、广义d’Alembert方程、递推的Largrange方程及递推Newton-Euler-Luh方程。文献[1]给出了递推的N-E-L方程,它具有计算量小(计算量与关节数成线性关系),不需要在线信息,而且惯性矩阵及其它物理、几何参数都以链杆上的坐标系为参考系。由于坐标系随着链杆运动,因此在机械手运动过程中,上面的参数都保持常数。在文献[1]中的     

OVATION系统热工控制回路切换扰动分析及优化

要实现热工控制回路的高质量自动控制,除了要考虑控制回路的跟踪问题、合理控制参数外,还必须考虑不同控制回路之间的切换扰动问题。针对OVATION系统中控制回路切换扰动导致的异常进行分析,提出了逻辑优化措施,为同类型DCS系统设计控制回路切换提供借鉴。     

槲寄生凝集素抑制人大肠癌HCT116 细胞环氧化酶-2 表达的研究

目的:探讨槲寄生凝集素对人大肠癌HCT116 细胞环氧化酶(COX-2) 表达的影响。方法:采用RT-PCR、Western blotting 和ELISA 等方法检测不同浓度(0.1 ～ 1 mg/L) 槲寄生凝集素对细胞COX-2 及其产物前列腺素E₂ (PGE₂) 表达的影响。结果:槲寄生凝集素可抑制HCT116 细胞的COX-2 mRNA、 蛋白表达及PGE₂ 的水平, 其抑制COX-2 蛋白的表达与PGE₂的水平相一致, 只在大剂量(1 mg/L) 时对COX-1 mRNA 有抑制作用。结论:槲寄生凝集素具有抑制HCT116 细胞的COX-2基因转录、蛋白表达和功能活性等作用, 在一定浓度(0.1 ～ 1 mg/L) 和时间范围(3 ～ 24 h) 内, 表现出时效与量效关系。     

苏里格最大丛式井组压裂启动

4月3日,长城钻探压裂公司在苏11区块组织了一场大规模压裂施工。这是苏里格气田最大一组丛式井压裂施工,井口数达到9口。经过两天奋战,连续施工4口井,泵入总液量3920立方米、总砂量408立方米,累计完成11层。施工规模     

烘干温度对铁皮石斛茎多糖抗氧化活性影响的研究

本实验主要研究了不同烘干温度对铁皮石斛茎多糖得率和抗氧化活性的影响.结果表明:不同温度条件下,40 ℃热风烘干后铁皮石斛茎多糖得率最高,达到45.93％且抗氧化能力最强,当溶液浓度为2.5 mg/mL时,对DPPH自由基、羟基自由基、超氧阴离子自由基的消除率分别为46.88％、56.44％、49.02％.说明烘干温度会...     

Preparation and uncertainty evaluation of standard samples for testing of dye transfer inhibition in washing北大核心CSCD

As for domestic washing the problem of fabric dye transfer in washing is becoming more and more serious which leads to the decrease of added value of fabrics and affects the aesthetics. With the improvement of people's living standards the demand for fabrics with high color saturation is increasing day by day. However fabrics with high color saturation are often accompanied by problems such as fabric dye transfer in the washing process which has become a pain point in clothing washing. For this reason washing machines at home and abroad are generally equipped with dye transfer inhibition and color protection washing procedures to alleviate the dye transfer phenomenon caused by mixed washing. Jiangnan University and Wuxi Little Swan Electric Co. Ltd. have carried out a series of studies on the formulation of dye transfer inhibition washing standards and the development of standard samples. In order to realize scientific and objective evaluation of dye transfer inhibition performance and solve the problem of lack of standard samples in washing dye transfer inhibition tests white cloth standard samples and red cloth standard samples for washing dye transfer inhibition tests were prepared to simulate light color clothes and dark color clothes in mixed washing. The color depth and water fastness of the prepared standard color cloth are 0. 2% and grade 3 respectively which comply with the provisions of GB / T 12490 - 2014 Textiles—Tests for Colour Fastness—Color Fastness to Domestic and Commercial Laundering. The homogeneity of standard white cloth and standard red cloth were tested by variance analysis the short-term stability test and long-term stability test were carried out for the data with an interval of one month and one year respectively by using the stability test formula. For the whiteness and color difference data tested by seven laboratories in order to analyze the normality of the fixed value data it is necessary to conduct a normality test on the obtained data. For this reason the skewness and kurtosis methods are used to conduct a normality test. The indicators tested include the average standard error standard deviation skewness skewness standard deviation kurtosis and kurtosis standard deviation etc. And Cochrane criterion and Dixon criterion are used to judge whether there are outliers. The indicators tested include statistics low-end outliers and high-end outliers. When calculating the uncertainty the uniformity short-term stability long-term stability and uncertainty introduced in the process of setting are calculated respectively to obtain the combined uncertainty. The results show that the standard white cloth and standard colored cloth have good uniformity and high stability. The combined uncertainty of the standard white cloth is 0. 365 8 and the combined uncertainty of the standard color cloth is 0. 358 0. The uncertainty mainly comes from the uncertainty introduced in the process of value determination. The uncertainty introduced by the uniformity short-term stability and long-term stability has little impact. This paper has prepared the standard sample for washing dye transfer inhibition test and provided the standard sample that is missing in the washing dye transfer inhibition test which is expected to realize the objective evaluation of the dye transfer inhibition performance promote the development of the dye transfer inhibition program carried by the washing machine and realize the scientific evaluation of the washing dye transfer inhibition performance. © 2022 Authors. All rights reserved.