共查询到20条相似文献,搜索用时 609 毫秒
1.
本文采用蒙特卡洛法(MCM法)对直流电子负载的电阻功能进行不确定度评定,应用MCM Alchimia软件可提高MCM法的计算速度。并与GUM法进行比较,进而得出在相同模型的条件下应用MATLAB对蒙特卡洛法的不确定度评定结果更为可靠。最终通过MATLAB对MCM Alchimia软件进行验证。 相似文献
2.
3.
4.
5.
煤化工、油气田和石化行业均会产生大量高含盐废水。文章介绍了高含盐废水的生物法深度处 理工艺及方法,包括曝气生物滤池(BAF)、序批式活性污泥法(SBR)、生物接触氧化(BCO)、膜生物反应器(MBR)、流式厌氧污泥床反应器(UASB)、厌氧膜生物反应器(AnMBR)、厌氧好氧工艺(An/O)及其变型工艺 等,阐述了驯化后的嗜盐菌和耐盐菌的使用效果,并对高含盐废水生物处理研究的前景进行展望,提出:微生物 处理高含盐废水具有成本低、几乎无二次污染的优点,能实现高含盐废水有机物组分的有效降解,提高“近零排 放”产品盐纯度,但还需在耐盐、嗜盐微生物的筛选和挖掘方面进行技术攻关,这将是生物法处理高含盐废水的 重要研究方向。 相似文献
6.
简要分析了PTFE玻纤烧结耐高温滤料工艺特点,介绍了该种滤料的性能、特性及工程应用实例,表明PTFE玻纤烧结耐高温滤料是一种具备耐高温、耐高湿、抗化学腐蚀性的高性能滤料,具有广阔的应用前景。 相似文献
7.
8.
西门子Simcenter Testlab振动控制采集分析系统在航天振动试验领域应用十分广泛,但是在实际工程应用中常常由于对软件工作机制理解不到位,参数设置不合理造成试验异常中断,这不仅给产品带来了巨大的安全隐患,而且也增加了试验时间和成本,严重影响研制进度。因此,本文针对某航天产品正弦振动试验的过载停机故障,从软件加速度限控制功能的角度分析了潜在原因,并且开展了实验验证。首先描述了振动试验过程和过载停机现象,排除了硬件原因,然后对可能的加速度限控制功能设置和通道量程过小等原因设计了三组实验进行分析验证,得出了此次试验过载停机①与加速度限控制(频域)设置无关,②而与通道量程(时域)设置有关,③通过忽略限幅通道过载设置可使试验正常进行的分析结论,最后针对Simcenter Testlab加速度限控制功能和通道量程设置提出了使用建议,为后续航天产品振动试验提供参考。 相似文献
9.
10.
11.
12.
13.
D. K. DUTT 《Natural resources forum》1988,12(2):159-167
India has groundwater potential of 418000 MCM. At present the bulk of groundwater use is in the agricultural sector which utilizes about 104700 MCM annually for irrigation. Initially groundwater development was at a low key with very little public outlay. However, the drought situation in the late 1960s dramatically altered public investment patterns, and the upward investment trend has continued ever since. During the VIIth 5-year Plan (1985–1990) institutional lending in this sector is targetted at Rs 33 billion with the intention of irrigating an additional 7.1 million ha. 相似文献
14.
15.
16.
The effects of environmental overload and noise on helping behavior is assessed through a 2 × 3 experimental design including two levels of environmental overload and three conditions on each site: without roadworks, roadworks without noise, and noisy roadworks.Results are analysed in terms of the cognitive appraisal of the situation and the narrowing of attention. The subject's behavior when confronted with explicit and implicit helping requests shows that noise appears to be the most important component of overload, affecting both the subjects' attentiveness in implicit helping demands, as well as the refusal to engage in verbal interaction. 相似文献
17.
18.
19.
低碳经济下的智能用电技术与环境安全 总被引:1,自引:0,他引:1
智能用电作为建设坚强智能电网的重要组成部分,具有高度的自动化水平和很强的自愈能力。采用智能用电技术可以将各种分布式再生能源迅速接入电网,对环境安全具有重要的促进作用。通过介绍智能用电这一新技术的发展现状和及其关键技术,从能源防御体系、土地利用和电力生产等方面对智能用电与环境安全之间的关系进行了分析。采用智能用电技术可以减少碳排放,提高用电系统的抗击灾害能力,保护环境、集约利用土地,是环境安全体系中非常重要的组成环节。 相似文献
20.
Chi-Yuan Lee Fang-Bor Weng Ten-Lom Chen Fan-Hsuan Liu 《International Journal of Green Energy》2016,13(6):624-629
This study developed an integrated (flow, voltage, and temperature) micro sensor using the micro-electro-mechanical systems (MEMS) technology. It was inserted into the high temperature proton exchange membrane fuel cell (HT-PEMFC) for local real-time measurement. The integrated micro sensor is made of 40 µm thick stainless steel base material, and its protective layer is formed by polyimide (PI) that has better temperature resistance. The integrated micro sensor has three functions, and is favorably characterized by small size, good acid resistance and temperature resistance, quick response, real-time measurement, and being able to be put in any place for measurement. After calibration, and its reliability confirmed, the integrated micro sensor is inserted into the HT-PEMFC for local microcosmic measurement. 相似文献