AZEC-M3电槽的阳极性能评价

锦化ＡＺＥＣ -Ｍ3电槽系北京化工机械厂引进ＡＧＣ的电槽制造技术并结合自己的阳极涂层技术生产的 1种小单极电槽 ,自 1991年 10月投产至今累计运转已达 8年 10个月。下面就该电槽性能进行讨论。1　ＡＺＥＣ -Ｍ3电槽的技术特性单元槽 2 90 / 310ｍｍ× 10 60ｍｍ ;直流电耗 2 2 0 0ｋＷ·ｈ/ (ｔ·10 0 %ＮａＯＨ) ;槽温 90℃ ;单元槽电压 3.0 8～ 3.18Ｖ ;氯中含氧 (体积分数 ) 0 .5%～ 2 .5% ;设计电流 50ｋＡ ;活性阴极寿命 4年 ;平均电流效率 93% ;橡胶槽框及薄垫片保证寿命 2年 ;阳极涂层寿命 5年 ;烧碱质量分数 35%。2　性能考核199…     

金属阳极电解槽制造技术发展综述

１电解槽制造技术进展金属阳极电解槽投入工业化使用后，电流密度较石墨阳极有大幅度提高。但是因为市场对碱和氯的需求不平衡及目前国内电解槽普遍存在结构不合理、管理水平不平均等问题，大部分国内电解槽运行的电流密度普遍在１５００Ａ／ｍ２左右，实际电流密度在（１...     

FA—Ⅱ40氯酸盐电解槽应用

通过消化吸收引进装置，对设计的ＦＡ－Ⅱ４０氯酸盐电槽运行测试表明，性能基本达到引进电槽水平。     

金属阳极槽停电保护及新老槽同步送电

３０－Ⅲ型金属阳极电解槽在停电长达５７天所实施的两点保护措施；一是用碱性淡盐水封槽，二是外加保护电源。再每天对单槽进行含碱含盐分析和坚持测定槽电压，控制单台保护电压在１．５￣２．０Ｖ。新老槽并网送电时将原老槽直流保护电源也与新槽并网，并网后半小时断开直流保护电源送直流电。为保护隔膜，送电时起始电流选在２０００Ａ再铵每档２０００Ａ以１０－１５ｍｉｎ速度升至２００００Ａ。转入正常运行各项指标合格说明了     

改善电槽运行状况节能降耗

几年来,我厂电槽运行状况一直不好,八六年吨碱耗直流电、耗碳板高居全省八家氯碱厂之首。通过改进管理,开展技术攻关、QC 小组活动,八七年电槽运行状况有了明显改善,各项消耗指标大幅度下降,技术经济指标有所提高。与国内同类型氯碱厂相比,电槽运行状况达到了国内中上等水平,吨碱直流电耗,炭板消耗达到省内最低。我厂八六、八七年度电解部分技术经济     

AZEC—M3型电槽阳极涂层损伤原因初探

本文介绍ＡＺＥＣ－Ｍ３型电槽在生产运行过程中发生的一些阳极涂层损作事例，就其损伤原因进行了分析，并提出了保证阳极长期经济运行的措施。     

Fe~（3＋）对DSA电槽的影响

通过实际调查较详细地分析了Ｆｅ￣（３＋）增高与盐水ｐＨ的关系及其对ＤＳＡ电极的影响。     

离子膜电解装置运行情况

总结了我厂引进日本旭硝子离子膜电解装置及国产配套设备运行三年多的生产、经济指标完成情况，对电解工序、二次精制盐水工序、离子膜的使用、有关操作、运行中存在的问题及改进意见进行了介绍和探讨。结论为：离子膜电解装置稳定运行的关键是设备及材质问题。过滤盐水ｐＨ值调节、ＳＰ－１０ＡＢ及ＴＷ－２０１ＡＢ的运转、氯气纯度以及电槽检修质量和管理等问题都应严格控制，这样才能使离子膜法生产获得较好经济效益。     

旭化成电解槽的改进

介绍了有20多家使用旭化成电解槽技术生产氯碱产品企业的专家及首脑参加的、在韩国举行的第4次旭化成电解槽技术会议上主要技术讨论议题一有关旭化成的自然循环电解槽的改进、对高电流密度的挑战以及对旭化成电解槽未来发展的思考等项技术内容。     

国产EC—1石棉绒在金属阳极电解槽上的应用

在金属阳极电解槽的生产过程中,隔膜的制做非常重要。因为隔膜的品质直接决定了电槽运行的好坏,电槽的诸多运行参数都会通过隔膜的性能的微妙变化而影响电流效率、电耗、氯气纯度、氯内含氢等主要技术经济指标,而隔膜制做质量的好坏,吸膜材料与     

Modultechnik — Zielsetzung,Aufbau, Konsequenzen und Erprobung

Modular technique: objectives, layout, test facility . In spent fuel reprocessing plants the hot process cells cannot be entered by the personnel without intensive decontamination of the cells and the equipment. In the German reprocessing plant the FEMO technique (i. e. remote handling modular design) is used to achieve high plant availability and to reduce the radiation burden of the personal. The characteristics of the FEMO technique are two canyon cells in which the process equipment is installed in standardized racks arranged on both sides of each cell. The unit of process equipment and rack is designated as the module. This article reports the objectives of the modular technique, the resulting layout, and the test facility program to confirm this maintenance concept.     

Adhesion of Triple-Negative Breast Cancer Cells under Fluorescent and Soft X-ray Contact Microscopy

Understanding cancer cell adhesion could help to diminish tumor progression and metastasis. Adhesion mechanisms are currently the main therapeutic target of TNBC-resistant cells. This work shows the distribution and size of adhesive complexes determined with a common fluorescence microscopy technique and soft X-ray contact microscopy (SXCM). The results presented here demonstrate the potential of applying SXCM for imaging cell protrusions with high resolution when the cells are still alive in a physiological buffer. The possibility to observe the internal components of cells at a pristine and hydrated state with nanometer resolution distinguishes SXCM from the other more commonly used techniques for cell imaging. Thus, SXCM can be a promising technique for investigating the adhesion and organization of the actin cytoskeleton in cancer cells.     

Visualising Liquid Water in PEM Fuel Cells Using Neutron Imaging

In this article, we review the neutron imaging techniques that have been used to visualise liquid water in PEM fuel cells. A list of the various facilities engaged in this research is provided and the published literature in this field reviewed. Neutron imaging has been successfully used to visualise water dynamics in the flow channels of operating fuel cells. This technique has also been used to understand water removal mechanisms and the importance of membrane hydration and GDL flooding to optimal fuel cell performance. More recently this technique has been applied to imaging the water in fuel cell cross‐sections in order to quantify the water contents in the different components of an operating fuel cell. Finally, this technique has also been utilised to examine ice formation during sub‐zero operation of single fuel cells. With ongoing improvements in spatial and temporal resolution, neutron imaging can be expected to play a greater role in any fuel cell development related to water transport.     

彗星试验在农药安全评价中的应用

彗星试验(Comet assay)，又称单细胞凝胶电泳试验(SCGE)，是一种快速、简便、灵敏的检测单个细胞DNA断裂的新技术，由于其具备其它试验无可比拟的优越性，因此应用前景十分广泛。本文就该技术的原理、操作程序和方法作一介绍，并预测其在农药安全评价中将有广阔的应用前景。     

太阳能级多晶硅材料研究进展

介绍太阳能电池硅材料的国内外发展现状,对太阳能硅材料的提纯和制备的新技术作了综合评述,如:改良西门子(siemens)法、硅烷热分解法、冶金硅直接提纯法、高纯试剂还原法、流化床法、废旧石英光纤提纯等技术.指出太阳能硅材料的发展趋势,为太阳能硅材料进一步研究提供依据.     

5-Fu对人结肠癌细胞凋亡过程中DNA损伤修复基因表达的影响

目的探讨5-Fu对人结肠癌细胞(HCT/8)凋亡过程中DNA损伤修复相关基因表达的影响。方法通过形态学、基因组电泳、吖啶橙染色及流式细胞仪,观察大肠癌细胞凋亡情况,同时应用基因芯片分析5-Fu作用后DNA损伤修复相关基因表达的变化。结果经流式细胞仪检测发现,5-Fu作用于HCT/8细胞48h与对照组相比,凋亡细胞数明显增加,基因组电泳出现典型的梯形条带,基因芯片分析显示,12个与DNA损伤修复相关的基因中,上调基因3个,下调基因9个。结论5-Fu作用于结肠癌细胞,导致多种DNA损伤修复基因发生改变,综合作用使细胞不能及时对损伤DNA进行修复,最终导致细胞发生凋亡。     

Vero细胞微载体技术规模化培养轮状病毒

目的利用Vero细胞微载体技术规模化培养轮状病毒。方法利用5 L生物反应器进行Vero细胞的微载体培养,待细胞密度达1.5×106个/ml时,以0.05 MOI接种轮状病毒P[2]G3株,于37℃连续培养6 d后收获病毒,期间每天取样观察细胞病变(CPE),并检测病毒感染性滴度。结果在轮状病毒规模化培养的初期,其病毒滴度逐渐升高,至48 h达到最高。在上清中,病毒的滴度为5.5CCID50/ml;在细胞裂解产物中,病毒的滴度为3.75CCID50/ml。结论Vero细胞微载体规模化培养轮状病毒可提高病毒的滴度。     

Redox‐Driven Host–Guest Interactions Allow the Controlled Release of Captured Cells on RGD‐Functionalized Surfaces

A quartz crystal microbalance technique with dissipation monitoring and a complementary optical microscopy technique were used for monitoring the capture and release of specific cells on a surface displaying a bifunctional molecular device, composed of a molecular scaffold endowed with the cell recognition property of an RGD ligand and a β‐CD/Fc redox‐switchable system.     

Microwave assisted CdSe quantum dot deposition on TiO2 films for dye-sensitized solar cells

CdSe quantum dot (QD ) sensitized TiO(2) films have been fabricated using a one-step microwave assisted chemical bath deposition (MACBD) technique and used as photoanodes for quantum dot sensitized solar cells. This technique allows direct and rapid deposition and a good contact between the CdSe and TiO(2) films. The photovoltaic performances of the cells with CdSe deposited at different times are investigated. The results show that cells based on MACBD deposited TiO(2)/CdSe electrodes achieve a maximum short circuit current density of 12.1 mA cm(-2) and a power conversion efficiency of 1.75% at one Sun (AM 1.5 G, 100 mW cm(-2)), which is comparable with those fabricated using conventional techniques.     

Personalized Single‐Cell Encapsulation Using E‐Jet 3D Printing with AC‐Pulsed Modulation

With the growing therapeutic importance of cell microcarriers, there has been a rise in the need to develop technologies that facilitate efficient microencapsulation of cells, currently limited by a lack of straightforward and low‐cost strategies for single‐cell isolation and printing. Thus, the aim of this study is to develop a gentle and cell‐compatible electro‐hydrodynamic jet 3D printing technique to facilitate the efficient microencapsulation of cells in hydrogel microspheres, and investigate the effects of parameters (flow rate, voltage frequency, nozzle diameter, working distance, and substrate velocity) on the printing process. Stable microspheres are obtained by regulating these parameters to balance various forces, with control of their diameters in the range of 100–600 µm. The study demonstrates that under optimized conditions, the technique is able to successfully encapsulate cells within hydrogel microspheres with high viability over a wide range of diameters. This 3D printing technique expands the potential utility of microspheres into additional biological applications, such as cancer biology and drug screening. It can also be used as an effective platform for the production of tumor spheroids, generating multicellular spheroid models in vitro or for injectable cell delivery.