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随着我国经济的快速发展,环境污染和保护越来越受到各界人士的关注。在区域内实施实时在线监测企业排污情况,是一种掌握排污实情,防止自报数据失真的有效方法。就区域范围内的远程排污监测系统进行了探讨,提出了一种切实可行的实时监测网络系统,由现场微机系统、主控计算机、软件系统及通讯层等组成,现场采用RS485/RS422工业通讯网络和智能仪表进行信号采集和汇总,远程采用现有通讯手段汇总至区域主控计算机,并对远程通讯的几种方法进行了对比和选择。该系统可用于远程排污实时监测亦可用于区域环境监测等领域。 相似文献
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Altındal Yerişkin Seçkin Şafak Asar Yasemin 《Journal of Materials Science: Materials in Electronics》2021,32(18):22860-22867
Journal of Materials Science: Materials in Electronics - To determine which of graphene (Gr) doping ratio (pure, 3–5%) into PVA is better or not, Gr-based PVA organic thin film were grown... 相似文献
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The aim of this study is to examine the dye biosorption properties of lichen species called Cladonia convoluta and Evernia prunastri. Since lichens are extensively found in the environment, their suitability as a cheap adsorbent has been investigated in this study. The optimal parameters for textile dye biosorption were also determined. The dried lichen biomass showed better dye biosorption capacity than ash lichen biomass. C. convoluta had better dye biosorption capacity than E. prunastri. Dye biosorption rate was found as 71.41% at optimal conditions. This study concluded that C. convoluta was a successful and cheap biosorbent for treatment of water contaminated by Acid Red P-2BX dye. 相似文献
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Elif Aykın Sultan Arslan Atike N. Durak 《International Journal of Food Properties》2016,19(1):222-232
In this research, the effect of different bicarbonate salts (sodium and ammonium) and their doses (0, 1, 2, and 3 g/100 g raw material) in the coating batter formula use and the sequential use of frying oil (1st, 2nd, 3rd, and 4th) on 5-hydroxymethylfurfural and acrylamide contents in coated fried chicken meat. The addition of sodium bicarbonate was efficient for reducing acrylamide content, but it increased browning and 5-hydroxymethylfurfural content compared to the control. When increasing the doses of sodium and ammonium bicarbonate from 1 to 3 g/100 g of raw material, the acrylamide content of samples did not change significantly, although adding sodium bicarbonate significantly reduced the acrylamide content as a control. These research results showed that using about 1 g/100 g raw material sodium bicarbonate rather than ammonium bicarbonate and as little frying oil as possible use during the production of coated and fried meat results in lower contents of 5-hydroxymethylfurfural and acrylamide. 相似文献
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Semahat Barlak Ali Karaipekli Sinan Yapıcı 《Nanoscale and Microscale Thermophysical Engineering》2016,20(2):85-96
In this study, the thermal conductivity and viscosity of nanofluids, composed of a base fluid and nanoencapsulated phase change material (NEPCM), were investigated experimentally. The NEPCM was prepared by the encapsulation of n-nonadecane as phase change material with diethylenetriamine and toluene-2,4-diisocyanate using interfacial polymerization method. The NEPCM was characterized using scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), and differential scanning calorimetry (DSC) analyses. In the preparation of the nanofluids containing NEPCM, two different base fluids, water and ethylene glycol (EG), were used. The concentration of NEPCM and the working temperature were selected as the main parameters. It was found that the viscosity of the nanofluids decreases with increasing temperature and increases with increasing solid concentration. The viscosity was also expressed as a function of the solid concentration and temperature. The thermal conductivity of the nanofluids was found to increase with increasing temperature. Thermal conductivity exhibited an increasing tendency with increasing solid concentration, but the changes in thermal conductivity according to base fluid are in the range of uncertainty of the measurement for both nanofluids with a solid volumetric fraction lower than 1.68%. 相似文献
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