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JES-F1XG) at the liquid nitrogen temperature of 77 K. A microwave with the frequency of 9.44 GHz was used and its power was set at 1 mW. The g factor was obtained by taking the signal of manganese as an internal standard. A specially designed cell in the in situ EPR measurement under H2 environment was used. After being thermally treated, the TiO2 samples were cooled to room temperature gradually......
of experimental value and simulation value of temperature for layout(3) 1-实验值;2-模拟值序号位置见图3(a) 图5 layout(3)风速实验值与模拟值的比较 Fig.5 Comparison of experimental value and simulation value of velocity... railway carriage[J]. Journal of Shanghai Jiao Tong University, 2004, 36(6): 961-966. [2] KONG Qiong-xiang, YU Bing-feng, Numerical study on temperature stratification in a room with under floor air......
钛颗粒. REFERENCES [1]沈耀亚, 赵德智. 功率超声在化工领域中的应用-现状和发展趋势[J]. 现代化工, 2000, 20(10): 14-18. SHEN Yao-ya, ZHAO De-zhi. Current situation of application of high-intensity ultrasound in the chemical industry... and temperature on precipitation process from sodium aluminate solution[J]. The Chinese Journal of Nonferrous Metals, 2002, 12(3): 607-610. [8]唐振宁. 钛白粉的生产与环境治理[M]. 北京: 化学工业出版社, 2000. 113. TANG Zhen-ning......
Institute of Technology). A flexible hose model test installation was built to determine the pressure loss in the flow of large solids through hoses [13]. A 30 m-high lifting system model test... control, monitoring, and data acquisition needs. The input and output modules are all Opto products. The displacement of hydraulic cylinders, oil pressure and temperature signals are sampled by analog......
; 无铅铜铋轴承材料摩擦副摩擦温升与时间的关系 Fig.5 Relationship between friction temperature and time of friction couples of lead-free Bi-contained copper bearing materials 2.2 定载条件下3... (a) and surface temperature (b) of friction couples under different load conditions 由图8可以看出,与定载试验时相同,无铅铜锡合金的减摩和抗粘特性较差;随着试验载荷的增大,摩擦副的摩擦因数几乎呈直线上升趋势,当载荷升至1.2 kN时,无铅铜锡合金摩擦副的摩擦因数明显大于另外两种铜基轴承材料摩擦副的摩擦因数,而且波动幅度较大,极不平稳......
relationships 图1 表1中反应(1)~(5)的反应吉布斯自由能与温度的关系 Fig.1 Relationship between Gibbs free energy and temperature of reactions (1)-(5) shown in Table 1 图2 表1中反应(6)~(9)的反应吉布斯自由能与温度的关系 Fig.2 Relationship between Gibbs free energy and temperature of reactions (6)-(9) shown in Table 1 由图1和2可看出,在298~373 K时,上述反应除反应式(8)偏钒酸钙与碳酸钠反应的吉布斯自由能大于零外,其余的化学反应自由能小于零,在热力学上均能发生,但反应吉布斯自由能随温度的变化趋势不同.图1中各种离子与......
中间层的溶解扩散)和含大量Cu原子的富铁区持续生长造成的Cu原子消耗,使得如图2(d)所示深色部分对应的富铜层相对于保温10和30 min接头的富铜层更薄,更分散.在压力作用下,部分不锈钢奥氏体晶粒和富铁层相接触. 图2 1 120 ℃保温不同时间下的接头显微组织 Fig. 2 Microstructures of joints at bonding temperature...降低,而Cr和Fe元素逐渐升高.钨母材中则形成了2~3 μm的扩散带,该扩散带主要由Cr和Fe元素扩散进入钨母材形成. 图3 1 120 ℃保温不同时间下的接头区成分线扫描分布曲线 Fig. 3 Element line scanning curves of joints at bonding temperature of 1 120......
with single-stage oxic process[J]. China Environmental Science, 2010, 30(3): 333-338. [13] Nittami T, Oi H, Matsumoto K, et al. Influence of temperature,pHand dissolved oxygen concentration on enhanced... Haitao. Effects of temperature and pH on nitrogen and phosphorus removal by activated sludge[J]. Chinese Journal of Environmental Engineering, 2007, 1(9): 10-14. [15] 李相昆. 反硝化除磷工艺与微生物学研究[D]. 哈尔滨: 哈尔滨......
of concrete barrier walls: Temperature, moisture and salt content[J]. Cement and Concrete Research, 1986, 16(5): 615-623. [20] 蒋建华, 袁迎曙, 张习美. 自然气候环境的温度作用谱和混凝土内温度响应预计[J]. 中南大学学报(自然科学版), 2010, 41(5): 1923-1930. JIANG Jianhua, YUAN Yingshu, ZHANG Ximei. Action spectrum of temperature in natural climate environment and prediction of temperature response in concrete[J]. Journal of Central South......
process makes the zinc industries more competitive, it needs high-cost autoclave and thereby its application is limited. In the 1990s, the atmospheric direct leaching (ADL) process of zinc sulphide concentrate was developed [3,4]. Actually, the ADL process is operated under oxygen-rich conditions, which is similar to low-temperature pressure leaching know-how [5-7]. The ADL process has been practiced......