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Effect of a less permeable stronger soil layer on the stability of non-homogeneous unsaturated slopes

Nabarun DEY, Aniruddha SENGUPTA

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 6, Pages 1462-1475 doi: 10.1007/s11709-020-0674-8

Abstract: It is observed that a less permeable, stronger silty sand layer in an otherwise homogeneous sandy soilNo shear band is found to initiate in a homogeneous sandy soil slope, whereas for a non-homogeneous slopeA discontinuity of the shear zone is also observed for the case of a non-homogeneous soil slope.The factor of safety of a non-homogeneous, unsaturated soil slope decreases because of the less permeable

Keywords： non-homogeneous slope stronger soil layer factor of safety centrifuge model test unsaturated soils

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Control of homogeneous charge compression ignition combustion in a two-cylinder gasoline direct injection

WANG Zhi, WANG Jianxin, SHUAI Shijin, MA Qingjun, TIAN Guohong

Frontiers in Energy 2007, Volume 1, Issue 3, Pages 311-315 doi: 10.1007/s11708-007-0045-3

Abstract: Homogeneous charge compression ignition (HCCI) has challenges in ignition timing control, combustion

Keywords： Homogeneous control combustion consumption extension

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Liquid discharge plasma for fast biomass liquefaction at mild conditions: The effects of homogeneous

Sen Wang, Shiyun Liu, Danhua Mei, Rusen Zhou, Congcong Jiang, Xianhui Zhang, Zhi Fang, Kostya (Ken) Ostrikov

Frontiers of Chemical Science and Engineering 2020, Volume 14, Issue 5, Pages 763-771 doi: 10.1007/s11705-019-1896-y

Abstract: Different homogeneous catalysts are usually required for plasma-enabled biomass liquefaction to achieve

Keywords： discharge plasma biomass liquefaction catalyst homogeneous catalysts

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Effects of compression ratio on the combustion characteristics of a homogeneous charge compression ignition

SONG Ruizhi, ZHOU Longbao, LIU Shenghua, LI Wei, HU Tiegang

Frontiers in Energy 2007, Volume 1, Issue 4, Pages 463-467 doi: 10.1007/s11708-007-0068-0

Abstract: The effects of homogeneous charge compression ignition (HCCI) engine compression ratio on its combustion

Keywords： homogeneous cylinder combustion compression dimethyl

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Reactive adsorption desulfurization over a Ni/ZnO adsorbent prepared by homogeneous precipitation

Aihua KONG, Yanyu WEI, Yonghong LI

Frontiers of Chemical Science and Engineering 2013, Volume 7, Issue 2, Pages 170-176 doi: 10.1007/s11705-013-1322-9

Abstract: A high-performance Ni/ZnO adsorbent was prepared by homogeneous precipitation using urea hydrolysis and

Keywords： nickel reactive adsorption desulfurization thiophene

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Application of micro-genetic algorithm for calibration of kinetic parameters in HCCI engine combustion model

HUANG Haozhong, SU Wanhua

Frontiers in Energy 2008, Volume 2, Issue 1, Pages 86-92 doi: 10.1007/s11708-008-0003-8

Abstract: calibrate to a newly developed reduced chemical kinetic model (40 species and 62 reactions) for the homogeneous

Keywords： homogeneous different combustion autoignition compression

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Digital representation of meso-geomaterial spatial distribution and associated numerical analysis of geomechanics: methods, applications and developments

YUE Zhongqi

Frontiers of Structural and Civil Engineering 2007, Volume 1, Issue 1, Pages 80-93 doi: 10.1007/s11709-007-0008-0

Abstract: The averaging method employs an assumption that the test samples can be represented by a homogeneous

Keywords： homogeneous numerical analysis Expanded homogenization meso-level

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Preparation and microstructure analysis of Fe-doped PbTiO ceramic

QIANG Liangsheng, MA Jing, CHU Jia, ZHANG Xiaohong

Frontiers of Chemical Science and Engineering 2008, Volume 2, Issue 2, Pages 140-144 doi: 10.1007/s11705-008-0021-4

Abstract: Furthermore, from STM analysis, it could be seen that the grain size of doped PT ceramics was homogeneous

Keywords： homogeneous Thermogravimetry/differential thermal tightness oxygenolysis sintering process

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A combined experimental and theoretical study of micronized coal reburning

Hai ZHANG, Jiaxun LIU, Jun SHEN, Xiumin JIANG

Frontiers in Energy 2013, Volume 7, Issue 1, Pages 119-126 doi: 10.1007/s11708-012-0226-6

Abstract: Micronized coal reburning (MCR) can not only reduce carbon in fly ash but also reduce NO emissions as compared to the conventional coal reburning. However, it has two major kinetic barriers in minimizing NO emission. The first is the conversion of NO into hydrogen cyanide (HCN) by conjunction with various hydrocarbon fragments. The second is the oxidation of HCN by association with oxygen-containing groups. To elucidate the advantages of MCR, a combination of Diffuse Reflection Fourier Transform Infrared (FTIR) experimental studies with Density Functional Theory (DFT) theoretical calculations is conducted in terms of the second kinetic barrier. FTIR studies based on Chinese Tiefa coal show that there are five hydroxide groups such as OH-π, OH-N, OH-OR , self-associated OH and free OH. The hydroxide groups increase as the mean particle size decreases expect for free OH. DFT calculations at the B3LYP/6-31 G(d) level indicate that HCN can be oxidized by hydroxide groups in three paths, HCN+OH→HOCN+H (path 1), HCN+OH→HNCO+H (path 2), and HCN+OH→CN+H O (path 3). The rate limiting steps for path 1, path 2 and path 3 are IM2→P1+H (170.66 kJ/mol activated energy), IM1→IM3 (231.04 kJ/mol activated energy), and R1+OH→P3+H O (97.14 kJ/mol activated energy), respectively. The present study of MCR will provide insight into its lower NO emission and guidance for further studies.

Keywords： hydroxyl radicals Fourier transform infrared spectroscopy (FTIR) density functional theory (DFT) homogeneous

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Applying the multi-zone model in predicting the operating range of HCCI engines

Ming JIA, Maozhao XIE, Zhijun PENG,

Frontiers in Energy 2010, Volume 4, Issue 3, Pages 414-423 doi: 10.1007/s11708-010-0108-8

Abstract: In this paper, a multi-zone model is developed to predict the operating range of homogeneous charge compression

Keywords： homogeneous charge compression ignition (HCCI) engine multi-zone operating range

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Experimental study on film combustion formed by spirally fluted horizontal tube

MEI Ning, ZHANG Bin, ZHAO Jian, ZHANG Ming

Frontiers in Energy 2008, Volume 2, Issue 1, Pages 54-58 doi: 10.1007/s11708-008-0023-4

Abstract: fuel film on the spirally fluted surface of a horizontal tube can provide rapid fuel evaporation and homogeneous

Keywords： homogeneous transferred evaporation micro-combustion efficiency

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Efficient promotion of methane hydrate formation and elimination of foam generation using fluorinated surfactants

Quan CAO, Dongyan XU, Huanfei XU, Shengjun LUO, Rongbo GUO

Frontiers in Energy 2020, Volume 14, Issue 3, Pages 443-451 doi: 10.1007/s11708-020-0683-2

Abstract: In promoters to facilitate methane hydrate formation, homogeneous surfactant solutions, sodium dodecyl

Keywords： methane hydrate fluorinated surfactants homogeneous promoter foam elimination stability

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Modification of premixed combustion in shear layers by grid turbulence

MU Kejin, WANG Yue, ZHANG Zhedian, NIE Chaoqun

Frontiers in Energy 2007, Volume 1, Issue 2, Pages 245-250 doi: 10.1007/s11708-007-0034-6

Abstract: Moreover, the energy contained in small-scale fluctuation was increased and turbulence became homogeneous

Keywords： homogeneous fine-wire thermocouple temperature hot-wire anemometry premixed

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Anaerobic treatment of wastewater containing methanol in up-flow anaerobic sludge bed (UASB) reactor

LIN Yishan, HE Yanling, MENG Zhuo, YANG Shucheng

Frontiers of Environmental Science & Engineering 2008, Volume 2, Issue 2, Pages 241-246 doi: 10.1007/s11783-008-0040-x

Abstract: The microorganisms in the sludge at the end of the test became homogeneous in morphology, which were

Keywords： homogeneous spherical influent alkalinity process anaerobic treatment

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Fe-Mn-sepiolite as an effective heterogeneous Fenton-like catalyst for the decolorization of reactive brilliant blue

Chengyuan SU,Weiguang LI,Xingzhe LIU,Xiaofei HUANG,Xiaodan YU

Frontiers of Environmental Science & Engineering 2016, Volume 10, Issue 1, Pages 37-45 doi: 10.1007/s11783-014-0729-y

Abstract: A study of the decolorization of reactive brilliant blue in an aqueous solution using Fe-Mn-sepiolite as a heterogeneous Fenton-like catalyst has been performed. The Fourier transform infrared (FTIR) spectra of the catalyst showed bending vibrations of the Fe-O. The X-ray diffraction (XRD) patterns of the catalyst showed characteristic diffraction peaks of α-Fe O , γ-Fe O and MnO. A four factor central composite design (CCD) coupled with response surface methodology (RSM) was applied to evaluate and optimize the important variables (catalyst addition, hydrogen peroxide dosage, initial pH value and initial dye concentration). When the reaction conditions were catalyst dosage= 0.4 g, [H O ]= 0.3 mL, pH= 2.5, [reactive brilliant blue] = 50 mg·L , and volume of solution= 500 mL at room temperature, the decolorization efficiency of reactive brilliant blue was 91.98% within 60 min. Moreover, the Fe-Mn-sepiolite catalyst had good stability for the degradation of reactive brilliant blue even after six cycles. Leaching of iron ions (<0.4 mg·L ) was observed. The decoloring process was reactive brilliant blue specific via a redox reaction. The benzene ring and naphthalene ring were first oxidized to open ring; these were then oxidized to the alcohol and carboxylic acid. The reactive brilliant blue was decomposed mainly by the attack of ·OH radicals including surface-bound ·OH radicals generated on the catalyst surface.

Keywords： Fe-Mn-sepiolite catalyst heterogeneous Fenton-like reactive brilliant blue homogeneous precipitation

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Title Author Date Type Operation

Effect of a less permeable stronger soil layer on the stability of non-homogeneous unsaturated slopes

Nabarun DEY, Aniruddha SENGUPTA

Journal Article

Control of homogeneous charge compression ignition combustion in a two-cylinder gasoline direct injection

WANG Zhi, WANG Jianxin, SHUAI Shijin, MA Qingjun, TIAN Guohong

Journal Article

Liquid discharge plasma for fast biomass liquefaction at mild conditions: The effects of homogeneous

Sen Wang, Shiyun Liu, Danhua Mei, Rusen Zhou, Congcong Jiang, Xianhui Zhang, Zhi Fang, Kostya (Ken) Ostrikov

Journal Article

Effects of compression ratio on the combustion characteristics of a homogeneous charge compression ignition

SONG Ruizhi, ZHOU Longbao, LIU Shenghua, LI Wei, HU Tiegang

Journal Article

Reactive adsorption desulfurization over a Ni/ZnO adsorbent prepared by homogeneous precipitation

Aihua KONG, Yanyu WEI, Yonghong LI

Journal Article

Application of micro-genetic algorithm for calibration of kinetic parameters in HCCI engine combustion model

HUANG Haozhong, SU Wanhua

Journal Article

Digital representation of meso-geomaterial spatial distribution and associated numerical analysis of geomechanics: methods, applications and developments

YUE Zhongqi

Journal Article

Preparation and microstructure analysis of Fe-doped PbTiO ceramic

QIANG Liangsheng, MA Jing, CHU Jia, ZHANG Xiaohong

Journal Article

A combined experimental and theoretical study of micronized coal reburning

Hai ZHANG, Jiaxun LIU, Jun SHEN, Xiumin JIANG

Journal Article

Applying the multi-zone model in predicting the operating range of HCCI engines

Ming JIA, Maozhao XIE, Zhijun PENG,

Journal Article

Experimental study on film combustion formed by spirally fluted horizontal tube