表面负载聚苯胺纳米线聚合物复合微球的制备及其防腐性能研究

采用分散聚合和\"受限聚合-原位生长\"法分别制备了聚甲基丙烯酸缩水甘油酯(PGMA)微球和PGMA@PANI(聚苯胺)复合微球,通过改变聚乙烯基吡咯烷酮(PVP)含量以及甲基丙烯酸缩水甘油酯(GMA)浓度实现对PGMA微球粒径和分散度的调控。在此基础上,通过改变苯胺(An)/PGMA、CTAB/An的比例、正戊醇的添加来调控PGMA@PANI复合微球的形貌。结果表明,在0.10g/mL GMA、10%(wt,质量分数,下同)PVP、50%十六烷基三甲基溴化铵(CTAB)和30%An条件下,可得到均匀负载PANI纳米线的聚合物复合微球。以复合微球为防腐助剂制备环氧型防腐涂料的测试结果显示:PGMA@PANI复合微球的添加量为4.5%时,防腐涂层耐盐雾时间为816h,耐盐水时间为960h,展现了较好的防腐性能和机械性能。福建省科技创新平台(2014H2006,2014I2005);;\n厦门市科技重大专项(3502Z20171002);;\n石墨烯技术研发和产业发展专项项目;;\n福建省科技重大专项(2018HZ0001-1

Trial production and industrial sidetrack test of the XH-1 type of potassium-free sulfur-tolerant shift catalyst

作者简介: 连奕新( 1971-),男,博士生;杨意泉(1944- ),男, 硕士,研究员,博士生导师,主要从事工业催化方面的研究, 通讯联系人,0592-2186368, [email protected]。[中文文摘]以镁铝尖晶石复合材料为载体,采用浸渍钴钼活性组分无煅烧技术,中试制备出新型XH-1无钾耐硫变换催化剂。对该催化剂进行实验室活性评价和6个月的工业侧线试验,结果表明:XH-1型催化剂结构稳定、机械强度高;在中压(2.0MPa)、低汽气比(0.3~0.6)的反应条件下,催化活性优于国内外同类产品;在高压(≥3.0 MPa)、高汽气比(≥1.0)条件下催化性能与同类产品相当,符合高、中压各种变换工艺条件对催化剂性能的要求。[英文文摘]New XH-1 type of potassium-free sulfur-tolerant water gas shift catalyst was trial produced on a pilot scale by the impregnation of Co-Mo active composition on the complex support of magnalium-alumina spinel without calcination.The results of both the evaluation in the laboratory and the industrial sidetrack test in a period of six months showed that the XH-1 type of catalyst had higher activity in comparison with the same type of products made in inland and overseas under medium pressure(2.0 MPa) and at ow steamtogas ratio( 0.3-0.6),but the same activity under high pressure (3.0MPa) and at high steamtogas ratio(≥1.0).Moreover the XH-1 type of catalyst was found to have stable construction and high mechanical strength. The catalyst was suitable for different shift technology conditions of high and medium pressure.厦门市企业创新基金计划项目(3502Z20031082

河南禹州瓦店遗址龙山文化壕沟的土壤微形态分析

本文采用土壤微形态分析方法对河南禹州瓦店遗址龙山文化壕沟采集的系列样品进行观察和分析，重建了 壕沟从建造、使用、维护、废弃到再利用的完整生命周期。研究表明，瓦店龙山文化壕沟直接与古颍河河道相通，应为 引水排灌的水利设施，在经过连续的维护和使用后进入废弃阶段，并很可能经历了再度开发利用的过程。土壤微形态研 究为考古学探讨遗址堆积形成原因和过程提供了全新的方法与视角

Effects of tributyl tin on the metabolism of benzo(a)pyrene in Sebastiscus marmoratus

国家自然科学基金项目资助(20447001);; 福建省自然科学基金项目资助(D0410007

Relation of hepatic EROD activity and cytochrome P4501A level in Sebastiscus marmoratus exposed to benzo[a]pyrene

This study was designed to investigate the in vivo effects of benzo[a]pyrene (BaP) on hepatic ethoxyresorufin-O-deethylase (EROD) activity and its correlation with cytochrome P4501A (CYP1A) protein levels in Sebastiscus marmoratus, which were exposed through a water column to BaP (10, 100, 1000 ng/L, respectively) or were treated with intraperitoneal injections of BaP (0.5, 1, 5, 10 mg/kg, respectively) every 7 d. The results showed that after 25 d of waterborne exposure to 1000 ng/L BaP, fish hepatic CYP1A levels and EROD activity were significantly induced. In contrast, EROD activity was not altered 7 d after second intraperitoneal injections, whereas, CYP1A protein levels were increased. Dose-dependent increase of biliary BaP metabolites demonstrated that the catalytic activity of CYP1A was induced by treatment with BaP. The lowest observable effect concentration with regard to biliary BaP metabolites (100 ng/L) was much lower than that with reference to EROD activity (1000 ng/L). The results suggest that biliary polycyclic aromatic hydrocarbon (PAH) metabolites were shown to better reflect the contamination gradients of PAHs than EROD activity. It appeared to be necessary to measure CYP1A protein levels to complement the EROD activity in relevant toxicological assessments

基于FPGA的容错异步串行收发器装置

<span style="color: rgb(69, 69, 69); font-family: Arial, Helvetica, sans-serif; line-height: 21px; text-indent: 24px;">&nbsp; &nbsp; &nbsp; &nbsp; 本实用新型提出基于FPGA的容错异步串行收发器。以解决UART的发送器和接收器因受到高能射线的照射而造成的单粒子翻转（SEU）和数据通信中检错和纠错的问题。本实用新型包括有数据发送器，数据接收器，扩展汉明码编码器，扩展汉明码解码器，多数表决器，少数表决器。对所有的模块分别做TMR处理。对于发送器，首先数据处理单元将要发送的数据送入扩展汉明码编码器，编码器将编码后的码字分别送入多数表决器，将多数表决器得到表决后的码字送入串行发送器中，串行发送器将并行数据转换成串行数据发送出去。对于接收器，将串行输入信号通过引脚输入到FPGA中，在FPGA中通过串行接收器实现接收数据的串并转换，串行接收器将串行数据转换成并行数据之后，送入解码器，解码器不仅可以对接收到码字做译码得到正确的信息数据，而且如果在传输过程中，由于信道受到的干扰或发送数据本身发生SEU，解码器可以对错误数据进行检测和纠正，同时得到错误信息。</span