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Your search keyword '"Liu, Tian-Ji"' showing total 17 results
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17 results on '"Liu, Tian-Ji"'

8. Metallurgical slag used for efficient growth of Chlorella pyrenoidosa to achieve CO2 conversion to biodiesel.

Author

Guo, Hua‐Wei, Wang, Ya‐Jun, Liu, Huan, Zeng, Ya‐Nan, Wang, Wei‐Jie, Liu, Tian‐Ji, Kang, Le‐Le, Ji, Rui, Wang, Yi‐Tong, Li, Jun‐Guo, and Fang, Zhen

Subjects
CHLORELLA pyrenoidosa, CARBON sequestration, CARBON fixation, CARBON offsetting, STEEL wastes, METALLURGICAL analysis, SLAG, CHLORELLA vulgaris, CHLORELLA
Abstract

Metallurgical slag such as solid waste generated in the steel industry carries environmental pollution risks, but it is rich in nutrients required by microalgae. Metallurgical slag used for carbon capture and biomass energy conversion has multiple benefits: (i) reduction and harmless treatment of metallurgical solid waste, (ii) assisting in carbon neutrality by efficient carbon fixation, and (iii) production of biodiesel from CO2. In this study, AOD, BOF, BFS, HVS, and VTS slag were applied to culture Chlorella pyrenoidosa (C. pyrenoidosa) with the regulation of growth, carbon fixation, and lipid synthesis. An excellent fixed amount of CO2 with 94.59 mg is obtained from C. pyrenoidosa biomass at BOF slag added (mass ratio of CO2 captured/microalgae/slag with 1.99/1.00/10.53) since high Ca/Mg mass ratio of 419 (8.38 mg/L Ca and 0.02 mg/L Mg), no Cr and low concentration of Al (0.04 mg/L) contribute to regulating antioxidant enzyme activity (SOD and POD) to resist ROS and improving PEPC activity to reduce carbon flux toward lipid to promote biomass synthesis. Both metal concentrations from Ca (5.86 mg/L), Mg (0.05 mg/L), Al (0.42 mg/L), and Cr (0.006 mg/L) and suitable pH (10.53) in AOD leaching solution at solid/liquid ratio of 0.5 g/L change carbon flow toward efficient lipid synthesis (47.07 wt%) by continuously providing raw materials and energy by regulating ACC, ME, and PEPC activities. High value‐added biodiesel with high concentrations of C16 and C18 methyl esters from lipid of C. pyrenoidosa is achieved, following other ecological and economic benefits including 197 mg CO2 captured and 2198 mg AOD applied with harmless. In this study, C. pyrenoidosa is cultured with elements from metallurgical slag solid waste, which promotes C. pyrenoidosa efficient carbon fixation to assist in carbon neutrality, and provides guidance for CO2 conversion to high‐value‐added products with low cost. [ABSTRACT FROM AUTHOR]

Published
2024
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12. Embedded Waveguide Thermo-optic Switch Based on Novel Organic-inorganic Hybrid Material

Author

王菲 Wang Fei, 孙小强 Sun Xiao-qiang, 王辉 Wang Hui, 张峰 Zhang Feng, 张大明 Zhang Da-ming, 陈长鸣 Chen Chang-ming, and 刘天际 Liu Tian-ji

Subjects
Core (optical fiber), Switching time, Materials science, Extinction ratio, Resist, business.industry, Insertion loss, Optoelectronics, Cladding (fiber optics), Hybrid material, business, Waveguide (optics), Atomic and Molecular Physics, and Optics
Abstract

A kind of novel organic-inorganic hybrid core layer material with good optical properties and high thermal stabilities was synthesized via sol-gel process.Epoxy-crosslinking can be realized in the hybrid material owing to the existence of organic flexible lateral chains in the molecules.Compared with the inorganic SiO2-TiO2 system,this kind of material exhibited high thermal-optic coefficient(10-4/K) and excellent film characteristics.A kind of thermal curable resist P(MMA-GMA) was synthesized as the cladding material.The embedded waveguide thermo-optic switch of Mach-Zehnder type was designed and fabricated well.The insertion loss of the device is 10 dB,the driving power is 15 mW,the switching time is less than 1 ms and the extinction ratio is 15 dB.

Published
2011
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13. Analysis on Structural Control of Coal Distribution in the Northern Qaidam Basin, NW China

Author

Wang Tong, Liu Tian-ji, and Zhan Wen-feng

Subjects
business.industry, technology, industry, and agriculture, Geochemistry, Distribution (economics), Geology, Coal measures, respiratory system, Structural basin, Block (meteorology), complex mixtures, respiratory tract diseases, Tectonics, Basement, otorhinolaryngologic diseases, Coal, China, business, Geomorphology
Abstract

The distribution of the Jurassic coal measures in the northern Qaidam Basin is obviously controlled by the regional structures. Based on the existing data of coalfield exploration and combined with the analysis of coalfield basement structures, features of the main faults, and the distribution of coal measures, this paper brings forward a scheme of coalfield tectonic divisional units and the definition of the coal-controlling structural styles in the northern Qaidam Basin. The structure control of the distribution of coal measures is further discussed. Several stages of regional tectonic activities since the Indosinian has led to the distribution of coal measures into the characteristics of zonation from the north to south and block from east to west. The results indicate that the structural deformations are the most intense in the front of the three uplifted belts, which are characterized by the combination of thrusts. The coal measures are uplifted to the shallow formations, and are easy to be exploited, but the scale of mines is small because of serious damages by the coal distribution. On the contrary, the stress and strain are weak in the three depressions, with the coal-controlling structural styles being mainly the thrust-fold and thrust-monocline combinations. The distribution of coals in the depressions is relatively stable. The shallower part of the depression will become the key areas for exploration and development of coal resources in the northern Qaidam Basin.

Published
2010
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