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formation of zeolite seed layers and the effects of seed layers on the growth of zeolite silicalite-1

ZHANG Xiongfu, WANG Jinqu, LIU Hai′ou, WANG Anjie

Frontiers of Chemical Science and Engineering 2007, Volume 1, Issue 2,   Pages 172-177 doi: 10.1007/s11705-007-0032-6

Abstract: The present study investigates the formation of silicalite-1 seed layers on a porous carbon support of0.5 μm pore size and α-A1O supports with different pore sizes (0.1 μm and 4 μm) via the slip-castingThe growth of silicalite-1 membranes on different seeded supports by hydrothermal synthesis was also

Keywords： silicalite-1     α-A1O     growth     seeding ethanol     quality    

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Band-gap tunable (GaxIn1−x)2O3 layer Research Articles

Fabi Zhang, Jinyu Sun, Haiou Li, Juan Zhou, Rong Wang, Tangyou Sun, Tao Fu, Gongli Xiao, Qi Li, Xingpeng Liu, Xiuyun Zhang, Daoyou Guo, Xianghu Wang, Zujun Qin,zhangfabi@outlook.com,qinzj@guet.edu.cn

Frontiers of Information Technology & Electronic Engineering 2021, Volume 22, Issue 10,   Pages 1370-1378 doi: 10.1631/FITEE.2000330

Abstract: Multicomponent oxide (GaIn)O films are prepared on (0001) sapphire substrates to realize a tunable band-gapproperties and band structure evolution over the whole range of compositions in ternary compounds (GaIn)OThe X-ray diffraction spectra clearly indicate that (GaIn)O films with Ga content varying from 0.11 toexperimental results lay a foundation for the application of transparent conductive compound (GaIn)O

Keywords： (GaxIn1−x)2O3薄膜；带隙可调谐；磁控溅射    

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Synthesis and properties of water-soluble 1,9-dialkyl-substituted BF

O’Shea

Frontiers of Chemical Science and Engineering 2020, Volume 14, Issue 1,   Pages 97-104 doi: 10.1007/s11705-019-1828-x

Abstract: Bis-alkylsulfonic acid and polyethylene glycol (PEG)-substituted BF azadipyrromethenes have been synthesized by an adaptable and versatile route. Only four synthetic stages were required to produce the penultimate fluorophore compounds, containing either two alcohol or two terminal alkyne substituents. The final synthetic step introduced either sulfonic acid or polyethylene glycol groups to impart aqueous solubility. Sulfonic acid groups were introduced by reaction of the bis-alcohol-substituted fluorophore with sulfur trioxide, and a double Cu(I)-catalyzed cycloaddition reaction between the bis-alkyne fluorophore and methoxypolyethylene glycol azide yielded a neutral bis-pegylated derivative. Both fluorophores exhibited excellent near-infrared (NIR) photophysical properties in methanol and aqueous solutions. Live cell microscopy imaging revealed efficient uptake and intracellular labelling of cells for both fluorophores. Their simple synthesis, with potential for last-step structural modifications, makes the present NIR-active azadipyrromethene derivatives potentially useful as NIR fluorescence imaging probes for live cells.

Keywords： NIR-fluorophores     live cell imaging     NIR-AZA    

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Construction of a CaHPO4-PGUS1 hybrid nanoflower through protein-inorganic self-assembly, and its applicationin glycyrrhetinic acid 3-O-mono-β-D-glucuronide preparation

Tian Jiang, Yuhui Hou, Tengjiang Zhang, Xudong Feng, Chun Li

Frontiers of Chemical Science and Engineering 2019, Volume 13, Issue 3,   Pages 554-562 doi: 10.1007/s11705-019-1834-z

Abstract: Using site-directed mutagenesis, we previously obtained a variant of -glucuronidase from Li-3 (PGUS1)In this study, a facile method was established to prepare a CaHPO -PGUS1 hybrid nanoflower for enzymeUnder optimal conditions, 1.2 mg of a CaHPO -PGUS1 hybrid nanoflower precipitate with 71.2% immobilizationand scanning electron microscope results showed that the enzyme was encapsulated in the CaHPO -PGUS1Moreover, the thermostability of the CaHPO -PGUS1 hybrid nanoflower at 55°C was improved, and its half-life

Keywords： glucuronidase     enzyme-inorganic hybrid nanoflower     biotransformation     glycyrrhizin     glycyrrtinic acid 3-O<    

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Emerging roles of podoplanin in vascular development and homeostasis

Yanfang Pan,Lijun Xia

Frontiers of Medicine 2015, Volume 9, Issue 4,   Pages 421-430 doi: 10.1007/s11684-015-0424-9

Abstract:

Podoplanin (PDPN) is a mucin-type O-glycoprotein expressed in diverse cell types, suchexpression of PDPN at the LEC surface requires transcriptional activation of Pdpn by Prox1and modification of PDPN with core 1-derived O-glycans.

Keywords： podoplanin     CLEC-2     Prox1     O-glycosylation     lymphatic vascular development and maintenance     lymphoid    

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Effect of biochar amendment on soil’s retention capacity for estrogenic hormones from poultry manure treatment

Sukhjot MANN, Zhiming QI, Shiv O. PRASHER, Lanhai LI, Dongwei GUI, Qianjing JIANG

Frontiers of Agricultural Science and Engineering 2017, Volume 4, Issue 2,   Pages 208-219 doi: 10.15302/J-FASE-2017138

Abstract: including humans, produce natural sex hormones such as estrogens: 17β-estradiol (E2) and estrone (E1)This experiment tests the hypothesis that 1% slow pyrolysis biochar-amended sandy soil could retain significantamount of estrogens (E1, E2) from poultry manure in its second year of application.

Keywords： adsorption     degradation     dissolved organic carbon     17β-estradiol (E2)     estrone (E1)    

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Comprehensive performance analysis and optimization of 1,3-dimethylimidazolylium dimethylphosphate-water

Gorakshnath TAKALKAR, Ahmad K. SLEITI

Frontiers in Energy 2022, Volume 16, Issue 3,   Pages 521-535 doi: 10.1007/s11708-021-0720-9

Abstract: The energy and exergy analyses of the absorption refrigeration system (ARS) using H O-[mmim][DMP] mixtureperformance validation of the ARS cycle showed a better coefficient of performance (COP) of 0.834 for H O-[mmim][DMP] in comparison to NH -H O, H O-LiBr, H O-[emim][DMP], and H O-[emim][BF4].

Keywords： ionic liquid driven absorption cycle     H2O-[mmim][DMP]     coefficient of performance (COP)     exergy    

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Synthesis of magnetic Pb/Fe

Hualiang AN, Xinqiang ZHAO, Zhiguang JIA, Changcheng WU, Yanji WANG

Frontiers of Chemical Science and Engineering 2009, Volume 3, Issue 2,   Pages 215-218 doi: 10.1007/s11705-009-0055-2

Abstract: To facilitate the recovery of Pb/SiO catalyst, magnetic Pb/Fe O /SiO samples were prepared separatelycatalytic activity was investigated in the reaction for synthesizing propylene carbonate from urea and 1,2When the gelatin was applied in the preparation of Fe O at 60°C and the pH value was controlled at 4in the preparation of Fe O /SiO , the Pb/Fe O /SiO sample shows good catalytic activity and magnetismof 180°C, reaction time of 2 h, catalyst percentage of 1.7 wt-% and a molar ratio of urea to PG of 1∶

Keywords： Pb/Fe3O4/SiO2 magnetic particle     urea     1     2-propylene glycol     propylene    

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Is atmospheric oxidation capacity better in indicating tropospheric O formation?

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 5, doi: 10.1007/s11783-022-1544-5

Abstract: ListItem>

● This study summarizes and evaluates different approaches that indicate O<

Keywords： O3     AOC     O3 formation regime    

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Prediction of selected biodiesel fuel properties using artificial neural network

Solomon O. GIWA,Sunday O. ADEKOMAYA,Kayode O. ADAMA,Moruf O. MUKAILA

Frontiers in Energy 2015, Volume 9, Issue 4,   Pages 433-445 doi: 10.1007/s11708-015-0383-5

Abstract: Biodiesel is an alternative fuel to replace fossil-based diesel fuel. It has fuel properties similar to diesel which are generally determined experimentally. The experimental determination of various properties of biodiesel is costly, time consuming and a tedious process. To solve these problems, artificial neural network (ANN) has been considered as a vital tool for estimating the fuel properties of biodiesel, especially from its fatty acid (FA) composition. In this study, four ANNs have been designed and trained to predict the cetane number (CN), flash point (FP), kinematic viscosity (KV) and density of biodiesel using ANN with logsig and purelin transfer functions in the hidden layer of all the networks. The five most prevalent FAs from 55 feedstocks found in the literature utilized as the input parameters for the model are palmitic, stearic, oleic, linoleic and linolenic acids except for density network with a sixth parameter (temperature). Other FAs that are present in the biodiesels have been considered based on the number of carbon atom chains and the level of saturation. From this study, the prediction accuracy and the average absolute deviation of the networks are CN (96.69%; 1.637%), KV (95.80%; 1.638%), FP (99.07%; 0.997%) and density (99.40%; 0.101%). These values are reasonably better compared to previous studies on empirical correlations and ANN predictions of these fuel properties found in literature. Hence, the present study demonstrates the ability of ANN model to predict fuel properties of biodiesel with high accuracy.

Keywords： biodiesel     fuel properties     artificial neural network     fatty acid     prediction    

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Availability of wind energy resource potential for power generation at Jos, Nigeria

O. O. Ajayi, R. O. Fagbenle, J. Katende, J. O. Okeniyi

Frontiers in Energy 2011, Volume 5, Issue 4,   Pages 376-385 doi: 10.1007/s11708-011-0167-5

Abstract: The objective of this study was to assess the potential viability of the wind resource potential in Jos, Plateau state, Nigeria for power generation. The monthly mean wind speeds that span from 1987 to 2007 were employed to statistically analyze the monthly, annual and seasonal potentials of the wind energy resources at the site. Besides, the results were employed together with two models of wind energy conversion system to simulate the likely average output power. The outcome showed that Jos was suitable as a site for wind farm projects of varying sizes and that MW·h to GW·h of electricity is likely to be produced per period of months, seasons and years. The average wind speed range at the site was also estimated to be between 6.7 and 11.8 m/s across the months, years and seasons.

Keywords： green electricity     renewable resources     Weibull statistics     Jos     Nigeria    

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Selective oxidation of o -nitrotoluene to o -nitrobenzaldehyde with metalloporphyrins as biomimetic catalysts

Xinling WANG, Yuanbin SHE,

Frontiers of Chemical Science and Engineering 2009, Volume 3, Issue 4,   Pages 453-456 doi: 10.1007/s11705-009-0167-8

Abstract: Selective oxidation of -nitrotoluene to -nitrobenzaldehyde with metalloporphyrins as biomimetic catalysts was studied. The peripheral substituent around porphyrin rings and various process parameters of NaOH concentration, reaction temperature, reaction time and oxygen pressure all affect the selectivity of -nitrobenzaldehyde. Further, 82.0% selectivity of -nitrobenzaldehyde was achieved under the optimum conditions: 1.0×10mol•L of T(-NO)PPFeCl catalyst, 2.5mol•L of NaOH, 0.2mol•L of -nitrotoluene, 45°C and 2.0MPa for 6h.

Keywords： -nitrobenzaldehyde     temperature     biomimetic     selectivity     pressure    

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Rh2O3/hexagonal CePO4 nanocatalysts for N2O decomposition

Huan Liu, Zhen Ma

Frontiers of Chemical Science and Engineering 2017, Volume 11, Issue 4,   Pages 586-593 doi: 10.1007/s11705-017-1659-6

Abstract: Rh(NO ) was then used as a precursor for the impregnation of Rh O onto these CePO materials.The Rh O supported on the CePO nanowires was much more active for the catalytic decomposition of NO than the Rh O supported on CePO nanorods.of both catalysts as a function of time on stream was studied and the influence of the co-feed (CO , O, H O or O /H O) on the N O decomposition was also investigated.

Keywords： Rh2O3     CePO4     N2O decomposition    

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Self-sustained catalytic combustion of CO enhanced by micro fluidized bed: stability operation, fluidization state and CFD simulation

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 9, doi: 10.1007/s11783-023-1709-x

Abstract:

● Catalytic combustion in fluidized bed realizes efficient heat and mass transfer.

Keywords： Self-sustained catalytic combustion     Carbon monoxide     Cu1–xCexOy     Fluidized    

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Magnetic Co-doped 1D/2D structured -FeO/MoS effectively activated peroxymonosulfate for efficient abatement

Frontiers of Environmental Science & Engineering 2023, Volume 18, Issue 3, doi: 10.1007/s11783-024-1797-2

Abstract:

● Magnetic Co- γ -Fe2O3/MoS2

Keywords： Magnetic Co-γ-Fe2O3/MoS2     Hydrothermal method     Bisphenol A     Degradation    

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Title Author Date Type Operation

formation of zeolite seed layers and the effects of seed layers on the growth of zeolite silicalite-1

ZHANG Xiongfu, WANG Jinqu, LIU Hai′ou, WANG Anjie

Journal Article

Band-gap tunable (GaxIn1−x)2O3 layer

Fabi Zhang, Jinyu Sun, Haiou Li, Juan Zhou, Rong Wang, Tangyou Sun, Tao Fu, Gongli Xiao, Qi Li, Xingpeng Liu, Xiuyun Zhang, Daoyou Guo, Xianghu Wang, Zujun Qin,zhangfabi@outlook.com,qinzj@guet.edu.cn

Journal Article

Synthesis and properties of water-soluble 1,9-dialkyl-substituted BF

O’Shea

Journal Article

Construction of a CaHPO4-PGUS1 hybrid nanoflower through protein-inorganic self-assembly, and its applicationin glycyrrhetinic acid 3-O-mono-β-D-glucuronide preparation

Tian Jiang, Yuhui Hou, Tengjiang Zhang, Xudong Feng, Chun Li

Journal Article

Emerging roles of podoplanin in vascular development and homeostasis

Yanfang Pan,Lijun Xia

Journal Article

Effect of biochar amendment on soil’s retention capacity for estrogenic hormones from poultry manure treatment

Sukhjot MANN, Zhiming QI, Shiv O. PRASHER, Lanhai LI, Dongwei GUI, Qianjing JIANG

Journal Article

Comprehensive performance analysis and optimization of 1,3-dimethylimidazolylium dimethylphosphate-water

Gorakshnath TAKALKAR, Ahmad K. SLEITI

Journal Article

Synthesis of magnetic Pb/Fe

Hualiang AN, Xinqiang ZHAO, Zhiguang JIA, Changcheng WU, Yanji WANG

Journal Article

Is atmospheric oxidation capacity better in indicating tropospheric O formation?

Journal Article

Prediction of selected biodiesel fuel properties using artificial neural network

Solomon O. GIWA,Sunday O. ADEKOMAYA,Kayode O. ADAMA,Moruf O. MUKAILA

Journal Article

Availability of wind energy resource potential for power generation at Jos, Nigeria

O. O. Ajayi, R. O. Fagbenle, J. Katende, J. O. Okeniyi

Journal Article

Selective oxidation of o -nitrotoluene to o -nitrobenzaldehyde with metalloporphyrins as biomimetic catalysts

Xinling WANG, Yuanbin SHE,

Journal Article

Rh2O3/hexagonal CePO4 nanocatalysts for N2O decomposition

Huan Liu, Zhen Ma

Journal Article

Self-sustained catalytic combustion of CO enhanced by micro fluidized bed: stability operation, fluidization state and CFD simulation

Journal Article

Magnetic Co-doped 1D/2D structured -FeO/MoS effectively activated peroxymonosulfate for efficient abatement

Journal Article