The electro-adsorption chiller: a miniaturized cooling cycle with applications to micro-electronics

A novel modular and miniature chiller is proposed that symbiotically combines adsorption and thermoelectric cooling devices. The seemingly low efficiency of each cycle individually is overcome by an amalgamation with the other. This electro-adsorption chiller incorporates solely existing technologies. It can attain large cooling densities at high efficiency, yet is free of moving parts and comprises harmless materials. The governing physical processes are primarily surface rather than bulk effects, or involve electron rather than fluid flow. This insensitivity to scale creates promising applications in cooling personal computers and other microelectronic appliances.     

不同热边界条件下氢气干燥器的性能实验研究

氢冷发电机运行中氧气湿度超标的危害性较大，在比较不同干燥方法特点的基础上，采用分子筛变温变压吸附再生工艺对氢气进行干燥。研究了在不同热边界条件下吸附床解吸后的吸附特性。实验结果表明：与自然对流情况比较，吸附床外部的绝热措施使解吸时床层温度提高78．6％左右，同时绝热解吸后吸附容量提高95％左右；但是绝热吸附床沿轴向温度分布不均匀，最大温差可达120℃。在将吸附床外部设计为绝热情况下，需进一步采用强化传热措施使吸附床温度分布均匀，降低吸附床再生的能耗，使解吸更加均匀。     

小分子溶质-混合溶剂三元体系的优先吸附现象

介绍一种用差减色谱研究小分子溶质对混合溶剂中某种组分优先吸附的方法. 在该方法中,淋洗剂是混合溶剂, 进样试液由溶质溶于混合溶剂制得. 通过测定自由溶剂峰的尺寸, 得到优先吸附参数λ2 (λ2 为周围溶剂化溶剂中某种溶剂组分的超额量与溶质重量之比). 用该方法对由丙三醇与水-乙醇混合溶剂所组成的体系进行研究发现, 当混合溶剂中乙醇的质量浓度低于2%时, 丙三醇对溶剂组分的优先吸附可忽略; 当乙醇质量浓度达到5%时, 丙三醇对乙醇优先吸附; 当乙醇质量浓度在10% ~23%时, 丙三醇对水优先吸附; 当乙醇质量浓度在30% ~60%时, 丙三醇优先吸附的溶剂组分又变成了乙醇.     

一种纤维素/钛白粉阳离子交换扩张床吸附剂

为了使得扩张床吸附技术更好地用于蛋白质分离，提出一种含有羧甲基阳离子交换基团的扩张床吸
附剂.采用了反相悬浮热再生法，将超细钛白粉包埋于再生纤维素骨架之中，制备成均质型纤维素/钛白粉
复合微球；再以复合微球作为扩张床吸附基质，用环氧氯丙烷交联后与一氯乙酸反应，得到羧甲基阳离子
交换型扩张床吸附剂；测定了吸附剂在扩张床中的扩张特性和蛋白质吸附性能.结果表明，该吸附剂具有
良好的扩张床膨胀和吸附性能，每升吸附剂的溶菌酶饱和吸附容量达98.7 g，扩张床中蛋白质穿透曲线形
状与填充床基本相似，每升吸附剂的10％穿透吸附容量可达到69.3 g溶菌酶.     

壳聚糖微球对环丙沙星吸附的研究

采用分光光度法研究了功能高分子壳聚糖及其微球对环丙沙星的吸附及控制释放;考察了吸附时间、初始浓度及pH值对吸附的影响。     

A reusable capacitive immunosensor with a novel immobilization procedure based on 1,6-hexanedithiol and nano-Au self-assembled layers

A novel immobilization procedure of antibody proteins for capacitive immunosensing, based on thiolor sulfur compound (1,6-hexanedithiol, HDT) and colloid Au layers is proposed. The insulating organic monolayer film was first formed by the spontaneous assembly of HDT from solution onto gold. When these thiol-rich surfaces are exposed to Au colloid, the sulfurs form strong bonds to gold nanoparticles, anchoring the clusters to the electrode substrate. After the assembly of gold nanoparticles layer, the original formed organic thiols surface was restored, and a new nano-Au surface was obtained. Thus, the antibody could be immobilized through electrostatic adsorption between nano-Au and the antibody proteins. After use, the formed immunocomplex layer can be rinsed out, via a saline solution with extreme pH. Therefore, the immunosensor can be regenerated repeatedly, highlighting a clear advantage of this new approach with respect to classical immunoassays employing covalent immobilization.     

表面活性剂在纳米氧化铝制备中的应用研究

回顾了近年来国内外对于表面活性剂在氧化铝制备过程中的应用研究现状,结合氧化铝制备中中间产物的研究成果,综述了阴离子、阳离子表面活性剂对纳米氧化铝颗粒大小、形貌以及孔结构等的控制作用.分析了吸附机理以及各种因素如表面活性剂物性、溶液pH值、离子强度等对吸附作用的影响.在此基础上探讨了表面活性剂在该领域的应用前景.     

Adsorption-chemical activity of finely-dispersed amorphous powders of brown and black boron used in synthesizing metal borides

Kinetic features of adsorption-desorption processes for a nitrogen and oxygen mixture of gases, nitrogen and water vapor at the surface of finely-dispersed amorphous powders of brown and black boron used to synthesize metal borides are studied. The different adsorption-chemical activity of amorphous brown and black boron powders towards the main components of an air atmosphere is determined. It is shown that the original boron, apart from hard impurity compounds, may carry at the surface gaseous constituents with a capacity to change the physicochemical parameters of the system in the reaction zone, and to affect the phase composition and quality of the product obtained. __________ Translated from Poroshkovaya Metallurgiya, Nos. 5–6(449), pp. 79–84, May–June, 2006.     

沸石、骨炭、活性氧化铝除氟效果研究

对沸石、骨炭和活性氧化铝三种除氟剂的除氟性能，处理后的水质通过静态和动态实验进行了比较，结果表明沸石价格低廉，具有越用越好的趋势，处理后的水质和水量能满足家庭饮用水的需要，适用于高氟区家庭使用，骨炭和活性氧化铝除氟效果较好，技术成熟，适用于处理厂集中处理使用。