矿用卡车示宽灯改造应用分析

随着露天矿产量及规模不断加大,矿用卡车也越来越大型化,卡车运行管理已成为露天矿生产安全主要方面。由于卡车行驶中盲区较大,且车体较大,尤其夜间作业,存在较大的安全风险,一旦发生安全事故会造成巨大的生命和财产损失。通过对矿用卡车夜间作业状态分析,提出矿用卡车示宽灯改造方案,在哈尔乌素露天煤矿应用实施,有效降低了卡车发生安全事故的概率及维护成本,也为露天矿安全、高效生产提供了保障。     

荧光灯制灯工艺对卤粉性能影响的研究

制作荧光灯时,灯用卤粉先后经过球磨、烤管、排气(或释汞)、老炼等工艺程序。这些工艺对卤粉发光性能的影响,主要在球磨、烤管工艺对卤粉发光性能的影响作过研究和报导。我国各制灯厂的制灯工艺尚未建立起严格的统一规范,因而同一性能的灯用卤粉在不同制灯厂的制灯水平差异较大,为此有必要就制灯工艺对卤粉发光性能的影响开展系统工作,以搞清不同制灯工艺对卤粉性能的影响并分析其原因,从而为改进卤粉应用特性和为消除不合理的制灯工艺对卤粉带来的有害影响,进而为提高荧光灯的光学性能提供有效的实验数据,对于提高灯的性能有着重要的经济价值。     

浅谈哈石化航煤管道运输应急响应

航煤的性质决定了航煤管道运输事故的性质--危害大、影响大。本文论述了航煤管道泄漏时应急响应过程,浅述了航煤管道应急响应现存问题及解决方案,如能实施,对保障哈石化的稳定发展具有重要的现实意义。     

航空煤油组分气相色谱分析方法的建立

以HP-5弱极性的毛细管色谱柱,氢火焰离子检测器(FID)和无水乙醇做溶剂,建立了一种分析航空煤油组分的气相色谱分析方法,通过用标准试剂配置已知各组分浓度的模拟航空煤油来分析选定效果最好的程序升温方式,同时绘制每种标准试剂的色谱分析工作曲线,在此基础上,对实际航空煤油进行了分析,得到了理想的结果。     

DFL-1煤油深度加氢精制催化剂性能评价

在200 mL连续加氢固定床装置上,以煤油为原料,对DFL-1催化剂进行催化剂活性评价实验。采用该催化剂可使煤油中的硫含量降至0.5μg·g~(-1)以下,溴指数小于150 mg·(100g)~(-1),达到深度精制目的。相同工艺条件下,DFL-1催化剂比国内传统催化剂加氢深度较深,脱硫效果显著,若达到相同的精制效果,DFL-1比国内同类型催化剂的反应温度降低10℃以上。     

Intensification of Freeze-Drying Rate of Bacillus subtilis MTCC 2396 Using Tungsten Halogen Radiation: Optimization of Moisture Content and α-Amylase Activity

A novel freeze-drying protocol has been explored to render fast and cost-effective freeze drying of hyperamylase producing Bacillus subtilis MTCC2396 employing a tungsten halogen lamp radiator (THLR) as a heat source. Response surface methodology assessed the maximum reduction in moisture content (96.07%) and minimum reduction in α-amylase (EC 3.2.1.1) activity (1.02%) in 4 h drying time at 42.5°C radiation temperature. α-amylase activity (0.046 U) and final moisture content (3.93%) of the optimally freeze-dried bacterial strain appeared satisfactory. The freeze-drying time using THLR (4 h) is remarkably lower compared to that under a conventional conductive plate heater (CPH) (10 h) at otherwise identical conditions. The higher effective moisture diffusivity of 0.0052 to 0.0078 m ²/s under THLR compared to 0.00084 to 0.0015 m ²/s under CPH (corresponding to 20–50°C) advocated the superiority of the THLR heating protocol. The higher efficacy of THLR was also evidenced through lower activation energy (8.42 kJ/mol) of moisture diffusion compared to that (12.051 kJ/mol) of CPH. The optimally freeze-dried bacteria demonstrated the same growth rate in addition to exhibiting excellent retention of bioremedial (Hg²⁺ removal) activity to that of the control.     

体育照明中金属卤化物灯用电源装置（SPS）的技术要求

本文给出了体育照明中金卤灯用电源装置（SPS）的技术要求，解释和说明技术要求的原因，指出SPS的选用要点。     

Design and investigation of a novel concentrator used in solar fiber lamp

A novel concentrator used in solar fiber lamp has been designed and made. The method of the design has been introduced. The lamp has been tested under the real solar condition and the experiment curves have been given. The light transmission will be influenced by the structure of the lamp and the diameter of the fiber, which has been studied in this paper. The experimental results show that the brightness of this solar fiber lamp is about the brightness of a 6-W ordinary electrical energy-saving lamp. The computer simulation for the lamp has been presented and the improvement schemes are proposed.     

An intervention to reduce kerosene-related burns and poisonings in low-income South African communities.

Objective: Unintentional injury rates in low- and middle-income countries are up to 50 times higher than high-income nations. In South Africa, kerosene (paraffin) is a leading cause of poisoning and burns, particularly in low-income communities where it serves as a primary fuel for light, cooking, and heating. This study tested a community-based intervention to reduce kerosene-related injury risk. The intervention used a train-the-trainers model, whereby expert trainers train local paraprofessionals, who in turn deliver educational materials to community residents. The intervention was theory-driven, pragmatically motivated, and culturally sensitive. Design: Prospective quasi-experimental intervention design with nonequivalent case versus control groups. Main Outcome Measures: Three primary outcome measures were considered: self-reported knowledge of kerosene safety, observed practice of safe kerosene use, and self-reported recognition of risk for kerosene-related injury. Results: ANOVA models suggest a large and significant increase in self-reported kerosene-related knowledge in the intervention community compared to the control community. There were smaller, but statistically significant changes, in kerosene-related safety practices and recognition of kerosene injury risk in the intervention community compared to the control community. Conclusion: The intervention was successful. A train-the-trainers model might be an effective educational tool to reduce kerosene-related injury risk in low-income communities within low- and middle-income countries. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

节能灯灯头扭矩测试仪器的改进

针对目前广泛使用的节能灯灯头扭矩测试仪器采用人手直接施加扭矩的缺陷进行改进。