TRIGONOX-141引发剂在PS装置上的应用

介绍了大庆石油化工总厂化工厂PS装置应用TRIGONOX-141引发剂工业化生产GPPS-200D产品的情况。结果表明，该引发剂的应用不但改善了产品的各项性能指标，而且提高了装置的单程转化率，具有较好的效益。     

新络合剂-多羧甲氨基酰胺类化合物的合成及对~(141)Ce的促排效果

本文报道了8个多验甲氨基酰胺类络合剂的合成及对~(141)Ce的促排效果。大鼠实验表明,其中8个络合剂,在注入后8天,使尿,粪中~(141)Ce的排除量为注入量的40—50％,约为对照组的7—10倍;肝中累积量有明显的降低,为对照组的1/2—1/7。     

A decision-based framework for comparing hardware compilers

This paper argues that “hardware compilers” (broadly construed as systems that automate any part of the VLSI design process) should be classified not simply by their input and output languages, but by how they treat the various kinds of decisions made in the design process. It examines several aspects of decision making and attempts to classify some hardware compiler efforts with respect to this framework.     

GH141合金环形锻件轧制工艺参数的研究

采用小环模拟的方式，研究了ＧＨ１４１合金轧制工艺参数中变形温度、变形程度对合金组织性能的影响，总结了ＧＨ１４１合金环形锻件的轧制工艺参数。     

Thermal stability of R-134a, R-141b, R-13I1, R-7146, R-125 associated with stainless steel as a containing material

An experimental apparatus for assessing the thermal stability threshold of refrigerant working fluids is described and results for R-134a (1,1,1,2-tetrafluoroethane), R141b (1,1-dichloro-1-fluoroethane), R-13I1 (trifluoromethyl iodide), R-7146 (sulphur hexafluoride), R-125 (pentafluoroethane) are presented. The information is a concern for the design of refrigeration systems, high temperature heat pumps and Organic Rankine Cycles (ORC), for which the above refrigerants are proposed. The method aims to identify a maximum temperature for plant operation in contact with stainless steel and involves the evaluation of four indicators: (1) pressure variation while the fluid is maintained at set temperature; (2) saturation pressure comparison after heat treatment; (3) chemical analysis; and (4) vessel visual inspection after the test session. The highest temperatures at which no evident degradation occured are: 368°C for R-134a; 102°C for R-13I1; 90°C for R-141b; 204°C for R-7146; and 396°C for R-125.     

Volumetric properties under pressure for 1,2-dichlorofluoroethane (R141), 1-fluoro-1,1,2-trichloroethane (R131a), and 1,2-dichloro-1,1-difluoroethane (R132b)

The effect of pressure on the volume of R141, R131, and R132b is reported as volume ratios (the volume under pressure relative to its value at atmospheric pressure) at six temperatures covering the range 278.15 to 338.13 K and pressures up to 380 MPa for R141 and R131a. For R132b the same temperature range has been used, but above its normal boiling point experimental arrangements have limited maximum pressures to below 300 MPa, with some loss of accuracy. Densities have been measured at atmospheric pressure for each liquid. The experimental data have been used to calculate isothermal compressibilities, thermal expansivities, and internal pressures: the change in isobaric heat capacity from its value at atmospheric pressure has also been estimated. The volume ratios for all three compounds can be represented by a version of the Tait equation based on previously reported data for 1,2-dicloroethane and 1,1,2-trichloroethane with the inclusion of allowances for the substitution in the former of chlorine or fluorine for the hydrogens on one of the carbons.     

Molecular properties of alternative refrigerants derived from dielectric-constant measurements

A review of the current work in Lisbon on the measurement of the dielectric constant of the liquid phase of some environmentally acceptable refrigerants proposed as alternative replacements of the chlorofluorocarbons (CFCs), responsible for the destruction of the ozone layer, is presented. Measurements on HCFC 141b, HCFC 142b, HCFC 123, HFC 134a, HFC 152a, and HFC 32 samples of stated purities of 99.8 mass% or better were performed as a function of pressure and temperature, in the temperature range from 200 to 300 K and at pressures up to 20 MPa. The ratio of the capacitances of a cell filled with the sample and under vacuum was measured with a direct capacitance method. The dielectric-constant measurements have a repeatability of 0.003% and an accuracy of 0.1%. The theory developed by Vedam et al. based on the Eulerian Strain and the Kirkwood equation for the variation of the modified molar polarization with temperature and density were applied to obtain the dipole moments of the refrigegrants in the liquid state, to obtain a physical insight of the molecular behavior, and to understand the equilibrium configuration of these liquids. Invited paper presented at the Fourth Asian Thermophysical Properties Conference. September 5–8, 1995, Tokyo, Japan.     

Thermal conductivity of gaseous HFC-134a,HFC-143a,HCFC-141b,and HCFC-142b

The thermal conductivity of new environmentally acceptable fluorocarbons HFC-134a (CH₂FCF₃), HFC-143a (CH₃CF₃), HCFC-141b (CH₃CCl₂F), and HCFC-142b (CH₃CCl₂F) in the gaseous phase has been measured in the temperature range 293–353 K at pressures up to 4 MPa. The thermal conductivity has been measured with a coaxial-cylinder cell on a relative basis. The apparatus was calibrated with He, Ne, Ar, Kr, N₂, CH₄, and SF₆ as reference fluids. The uncertainty of the experimental data obtained is estimated to be within 2% except for the uncertainty associated with the reference thermal-conductivity values. The excess thermal conductivity has been correlated satisfactorily as a function of density.     

Bit-panel to realize gray-scale control of synchronous VGA display by passive OLED matrix

Awell knownI BcurveofOLEDdepictsalinearre lationshipbetweencurrentfedintoanOLEDpixeland luminanceoutfromtheOLEDpixel,whichmeansthe brightnessofOLEDpixelcanbedirectlycontrolledbyacurrentfedintoOLEDpixel[1].Atthesametime,a pulsewidthmodulation(PWM)theoryisw…