电气产品的“三防”设计

在电气工业中,“三防“设计是指防潮湿、防盐雾、防霉菌设计。在我国的南方和沿海地区户外工作的电气设备,必须具备“三防”设计才能保证其正常工作。“三防”设计是电气产品在各种不同的环境中正常运行的重要保证,产品开发研制时即应从电路设计、材料应用、结构设计和工艺技术等诸方面进行系统性的“三防”设计。     

Correction of instrument measurement data for improving the visual color match between monitor and hardcopy

Abstract— Soft proofing, which can confirm the color reproduction of printed matter on a monitor, is coming into wide use in the field of graphic arts. However, there is a problem in that the color on the monitor looks different from that of printed matter, even though the L*a*b* value of the monitor's white point has been adjusted to that of the paper by using a spectroradiometer. After the color rendition of an LCD is visually adjusted to that of the paper, the measured color of the LCD shows color with L*a*b* values corresponding to a more greenish‐blue white than that of paper. For CRTs, this corresponds to a more bluish‐white. In this paper, it was assumed that bright lines in the measured spectrums of the monitors and the illuminations spread to the next wavelength band by the optical systems of the spectroradiometer. To solve the problem, a method is proposed to enhance the bright line by using a three‐tap digital filter. The effect of this method on two types of monitors under three types of illumination is also reported. After enhancing the bright lines, ΔE between the monitor and paper becomes smaller than that for the original one.     

AV型轴流压缩机同时采用静叶和转速调节时的控制策略

总结了武钢AV80型轴流压缩机控制系统的设计、调试经验，详细阐述了AV型轴流压缩机在定量／定风压调节中，同时采用静叶开度和转速调节时，实现轴流压缩机控制的优点、难点、解决方案以及轴流压缩机防喘控制的特点。     

钢结构的防火保护和新型水性厚型钢结构防火涂料的研究

研制了一种火灾发生时无有害气体产生的新型水性厚型钢结构防火涂料,并列举了涂料的性能指标,介绍了该涂料的配方、生产及施工技术。     

纺织品的紫外线防护性能研究

分析了影响纺织品防紫外性能的重要因素，如纤维的种类、含杂状况及色泽，织物的覆盖系数等，并进一步总结了生产防紫外纺织品的方法。     

排污闸涵洞渗漏水处理

针对涵洞出现的渗漏水问题，分析了渗漏原因。采取了注浆封水填充，凿孔干法迎水堵漏、自防水砂浆抹面等措施。收到了良好的效果。     

涤棉混纺织物的磷氮系阻燃整理综述（四）

5.5 UF—DAP工艺 由于高含棉量的涤棉混纺织物（简称CVC）的流行,谋求一种加工成本低的阻燃整理工艺,对纤维素磷酸酯化所用的磷酸氢二铵（DAP）、双氰胺和磷酰三胺早就有报道。为了提高50/50涤棉混纺织物中棉组分的不溶性磷的含量,而又不致产生用THPC整理那样的粗糙手感,G.C.Tesoro曾用类似于DAP而有反应性组分甲基磷酰二胺[CH_3PO（NH_2）_2]整理混纺织物,在磷含量小于3％时,便可使90g/m~2的混纺织物符合MAFT标准。这种整理方法简单,手感又极好,有良好的阻燃性能。若要通过严格的DOCFF3—71标准,则需添加类似的含溴量。 Holme I.等人对经N-羟甲基化合物处理的涤棉织物,再用磷酸氢二铵进行阻燃整理做过系统的研究工作。后来,Bajaj P.等人观察到经UF—DAP整理过的混纺织物的炭渣中含磷量减少,认为是提高了气体阻燃作用所致。这无疑是支持了Holme I.的观点。 尽管,目前N-羟甲基化合物-DAP阻燃工艺尚不够成熟,耐洗性也不够理想。但其阻燃性能和手感是具有吸引力的。为此就其中重要的工艺技术问题,作简要介绍。     

Effect of temperature and consistency on wheat dough performance

The effects of the dough consistency (DC; 300–700 BU), temperature of mixing (16–32 °C) and temperature along fermentation (15–35 °C) on the wheat bread dough performance during mixing, proofing, cooking and cooling have been studied through a central composite experimental design. Farinograph responses revealed the significant role of DC (α < 0.001) and mixing temperature (MT) (α < 0.001) on wheat bread dough elasticity. Fermentation responses obtained from the rheofermentometer showed that the DC induces a significant positive linear effect on dough development, whereas gas development was mainly governed by the fermentation temperature. The wheat bread dough behaviour subjected to a dual mechanical shear stress and temperature constraint showed that DC had a significant linear and positive effect on the starch gelatinisation and gelling process. Therefore, breadmaking is highly governed for DC, namely dough hydration, which has a direct consequence on the mixing, fermenting, cooking and cooling performance of the wheat bread dough.     

纯棉织物阻燃及三防整理的生产实践

本文主要对纯棉织物的阻燃及三防整理的作用机理、工艺条件以及在生产实践中的一些注意事项进行了较为详细的探讨,可资对这一品种的生产和开发参考。