ISO 14644-1洁净室空气洁净度等级标准的特点

对洁净室空气洁净度等级标准的国际标准ISO14644—1与美国标准FS209E的主要不同点进行列举并对IS014644—1在等级依据公式及表达格式方面的特点进行对比分析。     

介质阻挡放电与脉冲电晕放电净化气态污染物的试验研究

利用自行研制的介质阻挡及脉冲电晕放电低温等离子体发生器对空气中氨、硫化氢、甲苯等5种气态污染物进行净化，并探讨了两种放电方式的原理和特点。试验结果表明：与介质阻挡放电相比，脉冲电晕放电具有更好的净化效果。     

制革生态学(续四)

3 .2　Dyeing3.2 .1　DyesandpigmentsBASFsuppliesarangeofpowderandliquiddyesundertheLuganil andLurazol trademarksfordrumdyeingofleather.ThemajorityoftheLuganil andLurazol dyesareanionicazodyesormetalcomplexdyes.Certainspecialproductsroundofftherange .Lura zol BlackPLiquidisametal freeblackpigmentinaqueousdispersion ,whichcanbeappliedincon junctionwithdyes.LeatherBlackVMLiquidisacationicdye.TheLuganil andLurazol rangescontainalargenumberofchromaticdyes,andmanydiffer entshadesofblackandbro…     

Rydberg state start spectroscopic measurement of electric field profile in a propanea-ir flame

Electric field profiles have been measured in an atmospheric pressure propane-air flame, seeded with cesium, by Rydberg state Stark spectroscopy with 780 and 380 V applied voltage between electrodes placed across the flame. The space-charge density at the flame edge has been estimated from the electric field gradient. The electrical conductivity has been calculated from the current density and the electric field measurements.     

Analysis of Iddq failures by spectral photon emission microscopy

In this work, a fast identification of I_ddq failures using spectroscopic photon emission microscopy (SPEMMI) is proposed. The spectra obtained from failure sites on the I_ddq failed chips were compared with the ones of known defective components. Four distinguishable spectra categories were identified. They were attributed to gate oxide breakdown, metal shorts, blackbody radiation, and ESD caused junction spiking. The focused ion beam (FIB) technique was used to look at the damage sites for confirmation of the SPEMMI results.     

An expanded neonatal morbidity scale for premature infants

We revised a neonatal morbidity scale (the NMS) that has served as a means for comparison of neonatal illness in studies of high-risk neonates after initial hospital discharge. With an inception cohort approach, 89 premature infants at an urban university hospital were studied with the expanded scale (the ENMS). The original scale, published in 1983, was reworked and expanded based on advances in the diagnosis and management of neonates. A social risk scale was added. Linear and logistic regression analyses were used to judge validity of the newly revised scale and to examine its predictive ability for outcomes at six months of age. Concurrent validity was supported by the relationship between the ENMS-SRS and: birthweight (R2 = .54), gestational age (R2 = .50), length of stay (R2 = .47). Inter-rater reliability was .95. The ENMS, embodying a contemporary patient profile, is valid for a population of premature infants in a U.S. urban setting and has predictive validity for a few outcomes within six months of discharge from a special care unit.     

发达国家和地区的城市设计控制

在规划领域 ,作为公共政策的城市设计控制已经成为一个重要议题。一系列的国际研讨会和国际比较研究引起了广泛的关注。本文从体制类型、策略范畴、构成元素和运作机制四个方面讨论发达国家和地区的城市设计控制 ,以及对于我国的借鉴意义。     

Inhibition of return: Dissociating attentional and oculomotor components.

Inhibition of return (IOR) describes a performance decrement for stimuli appearing at recently cued locations. Both attentional and motor processes have been implicated in the IOR effect. The present data reveal a double dissociation between the attentional and motor components of IOR whereby the motor-based component of IOR is present when the response is oculomotor, and the attention-based component of IOR is present when the response is manual. These 2 distinct components should be considered and studied separately, as well as in relation to each other, if a comprehensive theory of IOR is to be achieved. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

J型烟囱的设计

为满足燃油锅炉的烟气排放要求，设计了Ｊ型烟囱，它由斜三通，直管，膨胀节，防爆门，雨漏、落水管道组成；给出了烟囱高度计算公式，指出烟囱设计中应注意的几个问题。实际运行表明，这种烟囱烟气排放指标符合当地环保要求。