浮阀塔板气液相界面积

研究了浮阀塔板上的气液接触状况以及相界面积。同时根据湍流液体中气泡变形与破碎的机理,建立了计算浮阀塔板相界面积的理论模型。该模型可用于比较不同浮阀结构对相界面积的影响。在理论研究的基础上,设计了一种新型浮阀——导向菱形浮阀。通过实验证明该浮阀塔板的相界面积得到显著提高。     

某富钴低镍锍矿的铜镍钴分离技术研究

某公司生产的富钴低镍锍为人造金属硫化矿石,矿石中富含镍、铜、钴等有价金属。结合该矿石工艺矿物学特性,对原矿进行一段磨矿,采用一次粗选—五次精选—二次扫选的工艺流程对该矿石进行了选矿试验。在磨矿细度-0.053mm占96%,用NaOH调节矿浆pH值至12.5～12.6,捕收剂S11016用量为110g/t的条件下进行全流程闭路试验,获得了含铜62.98%、含镍5.06%的高品位铜精矿和含镍42.65%、含铜5.66%的镍精矿;钴在镍精矿中富集,回收率为97.00%。该工艺选矿指标良好,较好地实现了富钴低镍锍矿石中铜与镍钴的浮选分离。     

锌镀层在环氧硝基磁漆挥发气氛下的腐蚀行为

分析了在密闭环境下环氧硝基磁漆涂层的挥发气氛组成以及锌镀层在其中的腐蚀行为。通过能谱、激光拉曼光谱及傅里叶变换红外光谱分析得知锌镀层的主要腐蚀产物为乙酸锌。     

Kinetics of Glass Transition and Crystallization in Carbon Nanotube Reinforced Mg-Cu-Gd Bulk Metallic Glass

Mg65Cu25Gd10 bulk metallic glass and its carbon nanotube reinforced composite were prepared. Differential scanning calorimeter （DSC） was used to investigate the kinetics of glass transition and crystallization processes. The influence of CNTs addition to the glass matrix on the glass transition and crystallization kinetics was studied. It is shown that the kinetic effect on glass transition and crystallization are preserved for both the monothetic glass and its glass composite. Adding CNTs in to the glass matrix reduces the influence of the heating rate on the crystallization process. In addition, the CNTs increase the energetic barrier for the glass transition. This results in the decrease of GFA. The mechanism of the GFA decrease was also discussed.     

~(60)Coγ线对马尾松改性的初步研究

马尾松经辐射处理后,其颜色加深,弦面花纹更加美观;含水率降低,但无翘曲、干裂;有机溶剂抽提物增加,去脂容易。其木材显微结构,纤维形态,顺纹抗压性质等均无明显改变。这些变化,将会给松木的改性利用开拓新的途径。     

城市污水泵站运行综合管理自动化系统探讨

通过对原有60余座污水泵站进行自动化控制设施改造,将所有可取得的自动化数据用专用采集软件传送至监控中心,通过对数据的整合、处理、剖析,以客户端的形式集成在"排水地理信息系统"内,建立起城市污水泵站运行综合管理自动化系统。该系统可充分利用现有排水设施,实现对各个污水泵站的实时调度与监控,可实时优化排水系统运行,提高泵站网络的综合运行效率,同时提供调度决策信息和防汛排水预案。     

几种热塑性丁苯嵌段共聚物的结构性能

用傅立叶变换红外光谱仪、凝胶渗透色谱仪、动态粘弹谱仪和透射电子显微镜研究了几种国产与进口苯乙烯-丁二烯-苯乙烯嵌段共聚物(SBS)的微观结构与分子形态。对几种SBS的结构、平均分子质量、聚合物组成、形态及其性能进行了比较。研究结果表明，国产SBS和进口同类产品的组成、平均分子质量、形态和玻璃化转变温度相近，但前者的定伸应力和拉伸强度较大，硬度偏高，熔体流动性稍差。     

OBM—0120微处理机在多点焊机中的应用

本文以一台典型的车门玻璃导轨多,点焊机为例、详细地论述了微处理机在多点焊机中的应用。它成功地解决了处于较恶劣环境中的多点焊机的动作程序及自动焊接程序的控制     

庄旺煤矿综放工作面顶煤冒放性分析

结合庄旺煤矿50208综放工作面煤层赋存特征,系统分析了开采深度、煤层强度、煤层厚度、煤层夹矸、煤层顶板及顶煤节理裂隙对综放工作面顶煤冒放性的影响,并通过隶属度法对庄旺煤矿顶煤冒放性的影响因素进行计算,做出综合评价,最终计算得工作面顶煤冒放性隶属度值μ为0.701,冒放等级为中等。因此,庄旺煤矿采用综采放顶煤回采工艺是可行的。     

Determination of Tertiary-butylhydroquinone and Its Metabolites in Rat Serum by Liquid Chromatography–Ion Trap Mass Spectrometry

A new method applying sensitive and selective liquid chromatography coupled with mass spectrometry (LC/MS/MS) for analyzing tertiary-butylhydroquinone (TBHQ) and its metabolites in rat serum was validated. Using an extracted ion chromatogram (EIC) of m/z 149, free TBHQ was observed in rat serum after dosing TBHQ at 350 mg/kg to male and female Sprague–Dawley (SD) rats. Four major metabolites of TBHQ were identified—a TBHQ-sulfate, two TBHQ-sulfate-derived substances and a TBHQ-glucuronide through MSⁿ spectra. Besides its simplicity, the sample treatment allows one to obtain a very good recovery of analysts, namely around 95%. This result suggests that the method described here is useful for the analysis of TBHQ and its metabolites in rat serum. Moreover, the metabolism of TBHQ was investigated using the method. After oral administration, TBHQ appear to be more completely absorbed and bio-transformed by males than females, which may result in higher acute oral toxicity of TBHQ for males than females.