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The release from a matrix compressed from a physical mixture of chlorpheniramine maleate, chlorinated poly(propylene), lactose and an anionic surfactant (sodium lauryl sulfate and dioctyl sodium sulfosuccinate) has been investigated. The formation of a poorly water-soluble complex between the chlorpheniramine and the anionic surfactant slows the release to a minimum at low concentrations of surfactant; however, at higher concentrations of surfactant the release is faster due to solubilization in the micellar phase of the ion-pair. The interactin between the chlorpheniramine maleate and the anionic surfactant also influences the release of a second, noninteracting compound from the matrix. 相似文献
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Toshifumi MUKUNOKI Ta Thi HOAI Daisuke FUKUSHIMA Teppei KOMIYA Takayuki SHIMAOKA 《Frontiers of Structural and Civil Engineering》2019,13(3):640
A significant volume of Municipal Solid Waste incineration bottom ash and fly ash (i.e., incineration residues) are commonly disposed as landfill. Meanwhile, reclamation of landfill sites to create a new land space after their closure becomes an important goal in the current fewer and fewer land availability scenario in many narrow countries. The objective of this study is to reclaim incineration residue materials in the landfill site by using cement and coal fly ash as stabilizers aiming at performing quality check as new developed materials before future construction. Indeed, physical and mechanical properties of these new materials should be initially examined at the micro scale, which is the primary fundamental for construction at larger scale. This research examines quantitative influences of using the combination of cement and coal fly ash at different ratio on the internal structure and ability of strength enhancement of incineration residues when suffering from loading. Couple of industrial and micro-focus X-ray computed tomography (CT) scanners combined with an image analysis technique were utilized to characterize and visualize the behavior and internal structure of the incineration residues-cement-coal fly ash mixture under the series of unconfined compression test and curing period effect. Nine types of cement solidified incineration residues in term of different curing period (i.e., 7, 14, 28 days) and coal fly ash addition content (i.e., 0%, 9%, 18%) were scanned before and after unconfined compression tests. It was shown that incineration residues solidified by cement and coal fly ash showed an increase in compression strength and deformation modulus with curing time and coal fly ash content. Three-dimension computed tomography images observation and analysis confirmed that solidified incineration residues including incineration bottom and fly ash as well as cement and coal fly ash have the deliquescent materials. Then, it was studied that stabilized parts play a more important role than spatial void distribution in increment or reduction of compression strength. 相似文献
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测试了高压热处理前后Cu52Cr48合金的硬度和压缩屈服强度,并结合显微组织观察,探讨了高压热处理对Cu52Cr48合金硬度和抗压性能的影响。结果表明:高压热处理能增大Cu52Cr48合金组织中Cu基体和Cr相的硬度,使Cu52Cr48合金的硬度和压缩屈服强度增大,合金的硬度和压缩屈服强度均随压力的升高而增大,当压力超过1 GPa时,硬度和压缩屈服强度增加缓慢。 相似文献
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Seiya MAKI Shuichi ASHINA Minoru FUJII Tsuyoshi FUJITA Norio YABE Kenji UCHIDA Gito GINTING Rizaldi BOER Remi CHANDRAN 《Frontiers in Energy》2018,12(3):426-439
The Paris Agreement calls for maintaining a global temperature less than 2°C above the pre-industrial level and pursuing efforts to limit the temperature increase even further to 1.5°C. To realize this objective and promote a low-carbon society, and because energy production and use is the largest source of global greenhouse-gas (GHG) emissions, it is important to efficiently manage energy demand and supply systems. This, in turn, requires theoretical and practical research and innovation in smart energy monitoring technologies, the identification of appropriate methods for detailed time-series analysis, and the application of these technologies at urban and national scales. Further, because developing countries contribute increasing shares of domestic energy consumption, it is important to consider the application of such innovations in these areas. Motivated by the mandates set out in global agreements on climate change and low-carbon societies, this paper focuses on the development of a smart energy monitoring system (SEMS) and its deployment in households and public and commercial sectors in Bogor, Indonesia. An electricity demand prediction model is developed for each device using the Auto-Regression eXogenous model. The real-time SEMS data and time-series clustering to explore similarities in electricity consumption patterns between monitored units, such as residential, public, and commercial buildings, in Bogor is, then, used. These clusters are evaluated using peak demand and Ramadan term characteristics. The resulting energy-prediction models can be used for low-carbon planning. 相似文献
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Wang Bohong Liang Yongtu Zhao Wei Shen Yun Yuan Meng Li Zhimin Guo Jian 《Water Resources Management》2021,35(2):447-464
Water Resources Management - Pump location optimization is a key issue in the design of water pipe networks to reduce energy consumptions and associated costs. The pump location variables in... 相似文献
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《International Journal of Hydrogen Energy》2020,45(32):16210-16218
A highly CO2-selective high-silica SSZ-13 zeolite membrane was used for H2 production by separating CO2 from syngas (CO2/H2 mixture). High-silica SSZ-13 zeolite membranes were fabricated using outside asymmetric alumina tubes by secondary growth of ball-milled SSZ-13 seeds. The composition of membrane gel and synthesis time were modified. The Si/Al ratio in framework of the membrane was as high as 42 when SiO2/Al2O3 ratio of the gel increased to 140. The effects of test parameters such as pressure drop, temperature, feed flow rate and concentration on membrane performance were investigated. The test pressure drop was up to 2 MPa. The ultra-high CO2/H2 selectivity of 161 with excellent CO2 permeances of ~6.3 × 10−7 mol/(m2 s Pa) (=3760 GPU) were observed for the best membrane at 243 K and pressure drop of 0.2 MPa. Carbon dioxide permeance through high-silica SSZ-13 zeolite membrane was 4.2 × 10−7 mol/(m2 s Pa) (=2500 GPU) at 298 K and pressure drop of 2.0 MPa, and the CO2/H2 selectivity was 17.4. The current high-silica SSZ-13 zeolite membranes exceeded the upper bound of polymeric membranes and other inorganic membranes in CO2/H2 plots and owned great potentials for H2 production from syngas. 相似文献