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Article: Unlocking bulk and surface oxygen transport properties of mixed oxide-ion and electron conducting membranes with combined oxygen permeation cell and oxygen probe method

Zhang, Yongliang / Huang, Kevin

Journal of membrane science. 2022 Feb. 15, v. 644

2022

Abstract: Surface exchange kinetics and bulk diffusion of oxygen are of paramount importance to the activity of oxygen electrocatalysis and performance of electrochemical devices such as fuel cell, metal-air batteries, and oxygen separation membranes. Conventional ...

Abstract	Surface exchange kinetics and bulk diffusion of oxygen are of paramount importance to the activity of oxygen electrocatalysis and performance of electrochemical devices such as fuel cell, metal-air batteries, and oxygen separation membranes. Conventional approaches to obtaining these transport properties are often limited to single property under a specific non-operation related condition. Here we use a combined oxygen permeation cell and oxygen probe methodology to simultaneously attain rates of oxygen surface exchange and bulk conductivity/chemical diffusivity of three representative mixed oxide-ion and electron conductors, namely SrCo₀.₉Ta₀.₁O₃₋δ (SCT), La₀.₆Sr₀.₄CoO₃₋δ (LSC) and La₀.₆Sr₀.₄FeO₃₋δ (LSF), operated under a steady-state oxygen flux. The results explicitly show that SCT exhibit the highest oxide-ion conductivity/chemical diffusivity, fastest rates of surface oxygen exchange kinetics, thus promising to be the best oxygen electrocatalyst. We have also mapped out the distribution of oxygen chemical potential gradient across the membranes and applied B-transport number concept to illustrate the rate-limiting steps in the overall oxygen permeation process.
Keywords	diffusivity ; electrochemistry ; fuel cells ; oxygen ; permeability
Language	English
Dates of publication	2022-0215
Publishing place	Elsevier B.V.
Document type	Article
ZDB-ID	194516-6
ISSN	0376-7388
ISSN	0376-7388
DOI	10.1016/j.memsci.2021.120082
Database	NAL-Catalogue (AGRICOLA)

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Article ; Online: Adaptive CL-BFGS Algorithms for Complex-Valued Neural Networks.

Zhang, Yongliang / Huang, He / Shen, Gangxiang

IEEE transactions on neural networks and learning systems

2023 Volume 34, Issue 9, Page(s) 6313–6327

Abstract: Complex-valued limited-memory BFGS (CL-BFGS) algorithm is efficient for the training of complex-valued neural networks (CVNNs). As an important parameter, the memory size represents the number of saved vector pairs and would essentially affect the ... ...

Abstract	Complex-valued limited-memory BFGS (CL-BFGS) algorithm is efficient for the training of complex-valued neural networks (CVNNs). As an important parameter, the memory size represents the number of saved vector pairs and would essentially affect the performance of the algorithm. However, the determination of a suitable memory size for the CL-BFGS algorithm remains challenging. To deal with this issue, an adaptive method is proposed in which the memory size is allowed to vary during the iteration process. Basically, at each iteration, with the help of multistep quasi-Newton method, an appropriate memory size is chosen from a variable set {1,2, ... , M} by approximating complex Hessian matrix as close as possible. To reduce the computational complexity and ensure desired performance, the upper bound M is adjustable according to the moving average of memory sizes found in previous iterations. The proposed adaptive CL-BFGS (ACL-BFGS) algorithm can be efficiently applied for the training of CVNNs. Moreover, it is suggested to take multiple memory sizes to construct the search direction, which further improves the performance of the ACL-BFGS algorithm. Experimental results on some benchmark problems including the pattern classification, complex function approximation, and nonlinear channel equalization problems are given to illustrate the advantages of the developed algorithms over some previous ones.
Language	English
Publishing date	2023-09-01
Publishing country	United States
Document type	Journal Article
ISSN	2162-2388
ISSN (online)	2162-2388
DOI	10.1109/TNNLS.2021.3135553
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article: Evolution and Influencing Mechanisms of the Yili Loess Mechanical Properties under Combined Wetting-Drying and Freeze-Thaw Cycling.

Zhang, Yongliang / Zhang, Zizhao / Hu, Wanhong / Zhang, Yanyang

Materials (Basel, Switzerland)

2023 Volume 16, Issue 13

Abstract: Landslides frequently occur in the loess-rich Yili region of Xinjiang, China, due to the combined effects of wetting-drying and freeze-thaw (WD-FT) cycles, which cause changes in the soil/loess internal structure and shear strength. This paper explores ... ...

Abstract	Landslides frequently occur in the loess-rich Yili region of Xinjiang, China, due to the combined effects of wetting-drying and freeze-thaw (WD-FT) cycles, which cause changes in the soil/loess internal structure and shear strength. This paper explores the combined effect of WD-FT cycles on the shear strength evolution of Yili loess through cyclic and triaxial shear tests. The micromechanism of the effect of WD-FT cycles on the loess properties is studied through scanning electron microscopy tests. Finally, the gray correlation analysis method assesses the correlation between relevant macro and micro parameters. The results show that: (1) With the increase in WD-FT cycles, the cohesion of loess decreases first and then gradually stabilizes, while the internal friction angle first grows and then drops before stabilizing. This indicates that the WD-FT cycles cause different degrees of decline in the soil's internal friction angle and cohesion. (2) As the number of WD-FT cycles increases, the average abundance and directional probability entropy fluctuate slightly, gradually decreasing and stabilizing. In contrast, the particle size dimensionality gradually decreases and stabilizes, and the pore area ratio first increases and then gradually stabilizes. (3) Six microstructural parameters (average diameter, average abundance, particle size dimensionality, directional probability entropy, particle roundness, and pore area) are selected for correlation analysis with the shear strength index of loess. The results show that the particle size dimensionality closely correlates with macroscopic internal friction angle under coupled cycling, while the pore area closely correlates with macroscopic cohesion. These findings are instrumental in preventing and controlling loess landslides caused by WD-FT cycles in the Yili region of Xinjiang, China, and similar loess-rich regions.
Language	English
Publishing date	2023-06-30
Publishing country	Switzerland
Document type	Journal Article
ZDB-ID	2487261-1
ISSN	1996-1944
ISSN	1996-1944
DOI	10.3390/ma16134727
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: Deep survival analysis using pseudo values and its application to predict the recurrence of stage IV colorectal cancer after tumor resection.

Xia, Yi / Zhang, Baifu / Zhang, Yongliang

Computer methods in biomechanics and biomedical engineering

2023 , Page(s) 1–10

Abstract: An improved DeepSurv model is proposed for predicting the prognosis of colorectal cancer patients at stage IV. Our model, called as PseudoDeepSurv, is optimized by a novel loss function, which is the combination of the average negative log partial ... ...

Abstract	An improved DeepSurv model is proposed for predicting the prognosis of colorectal cancer patients at stage IV. Our model, called as PseudoDeepSurv, is optimized by a novel loss function, which is the combination of the average negative log partial likelihood and the mean-squared error derived from the pseudo-observations approach. The public BioStudies dataset including 999 patients was utilized for performance evaluation. Our PseudoDeepSurv model produced a C-index of 0.684 and 0.633 on the training and testing dataset, respectively. While for the original DeepSurv model, the corresponding values are 0.671 and 0.618, respectively.
Language	English
Publishing date	2023-11-02
Publishing country	England
Document type	Journal Article
ZDB-ID	2071764-7
ISSN	1476-8259 ; 1025-5842
ISSN (online)	1476-8259
ISSN	1025-5842
DOI	10.1080/10255842.2023.2275246
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article: Highly Stereoselective Synthesis of 2-Azido-2-Deoxyglycosides via Gold-Catalyzed S

Zhang, Yongliang / Ma, Xu / Zhang, Liming

CCS chemistry

2023 Volume 5, Issue 12, Page(s) 2799–2807

Abstract: Highly stereoselective synthesis of 2-azido-2-deoxyglucosides and 2-azido-2-deoxygalactosides is achieved via a gold-catalyzed ... ...

Abstract	Highly stereoselective synthesis of 2-azido-2-deoxyglucosides and 2-azido-2-deoxygalactosides is achieved via a gold-catalyzed S
Language	English
Publishing date	2023-12-04
Publishing country	China
Document type	Journal Article
DOI	10.31635/ccschem.023.202303086
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: TurboID-Based Proximity Labeling: A Method to Decipher Protein-Protein Interactions in Plants.

Li, Yuanyuan / Zhang, Yongliang / Dinesh-Kumar, Savithramma P

Methods in molecular biology (Clifton, N.J.)

2023 Volume 2724, Page(s) 257–272

Abstract: Proteins form complex networks through interaction to drive biological processes. Thus, dissecting protein-protein interactions (PPIs) is essential for interpreting cellular processes. To overcome the drawbacks of traditional approaches for analyzing ... ...

Abstract	Proteins form complex networks through interaction to drive biological processes. Thus, dissecting protein-protein interactions (PPIs) is essential for interpreting cellular processes. To overcome the drawbacks of traditional approaches for analyzing PPIs, enzyme-catalyzed proximity labeling (PL) techniques based on peroxidases or biotin ligases have been developed and successfully utilized in mammalian systems. However, the use of toxic H
MeSH term(s)	Animals ; Biotin ; Hydrogen Peroxide ; Plants ; Nicotiana ; Biotinylation ; Mammals
Chemical Substances	Biotin (6SO6U10H04) ; Hydrogen Peroxide (BBX060AN9V)
Language	English
Publishing date	2023-11-21
Publishing country	United States
Document type	Journal Article
ISSN	1940-6029
ISSN (online)	1940-6029
DOI	10.1007/978-1-0716-3485-1_19
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: Power capture analysis of a five-unit oscillating water column array integrated into a breakwater in terms of flow field visualization

Wang, Chen / Xu, Haochun / Zhang, Yongliang / Chen, Wenchuang

Energy Conversion and Management. 2023 Oct., v. 293 p.117449-

2023

Abstract: Oceanic waves possess immense untapped potential as a renewable energy resource, presenting a remarkable opportunity for energy extraction. To unleash the full extent of wave power within a given region and generate substantial quantities of electricity ... ...

Abstract	Oceanic waves possess immense untapped potential as a renewable energy resource, presenting a remarkable opportunity for energy extraction. To unleash the full extent of wave power within a given region and generate substantial quantities of electricity for widespread distribution, it is plausible to envision the deployment of wave farms—expansive arrays comprising wave energy converters. This study investigates the performance of an oscillating water column (OWC) array system integrated into a straight breakwater for wave power extraction. The array consists of five identical rectangular-shaped OWC units with a circular-curve bottom profile, arranged in a linear configuration. Computational Fluid Dynamics simulations are conducted to analyze the power capture of the array system and understand the operational dynamics compared to individual OWC device. Flow field visualization is employed to gain insights into the array effects and the influence of the transverse spacing between the interior units. The array configuration reveals that the OWC units positioned at the lateral sides exhibit the highest performance, while the central chamber achieves the lowest performance. However, none of the units within the array surpass the wave power extraction of an individual OWC device. The array effect introduces interference, significantly influencing the velocity field distribution of the water flow and contributing to disparities in wave power extraction between the individual device and the closely-adjacent array configuration. The study also emphasizes the role of transverse spacing between the interior units in the array. Within a certain range of transverse spacing, increasing the spacing enhances the power capture by mitigating destructive interactions involved in the inflow and outflow processes between adjacent chambers. However, when the transverse spacing becomes sufficiently large, the behavior of each unit within the array resembles that of an individual OWC device, and the constructive interaction effects between units become negligible, thereby weakening wave power extraction.
Keywords	administrative management ; electricity ; energy conversion ; fluid mechanics ; water flow ; water power ; Wave power ; OWC array ; Flow field ; Array effect ; Transverse spacing
Language	English
Dates of publication	2023-10
Publishing place	Elsevier Ltd
Document type	Article ; Online
ZDB-ID	2000891-0
ISSN	0196-8904
ISSN	0196-8904
DOI	10.1016/j.enconman.2023.117449
Database	NAL-Catalogue (AGRICOLA)

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Article: Simultaneous harmless ionization of CFC and resource utilization of waste solar panel through one-pot hydrothermal treatment

Zhang, Yongliang / Zhan, Lu / Yuan, Xuehong / Xu, Zhenming

Journal of hazardous materials. 2023 Jan. 05, v. 441

2023

Abstract: Chlorofluorocarbons (CFCs), which possess the characteristics of high volatility and destroy ozone layer, are hardly disposed of through traditional methods. With a tightly closed reaction environment and high-temperature water medium, CFCs can react and ...

Abstract	Chlorofluorocarbons (CFCs), which possess the characteristics of high volatility and destroy ozone layer, are hardly disposed of through traditional methods. With a tightly closed reaction environment and high-temperature water medium, CFCs can react and generate inorganic Cl⁻ and F⁻ under subcritical water conditions, which is very useful to enhance leaching and enrich rare metals. Therefore, in the current study, CFCs and photovoltaic wastes containing gallium arsenide (GaAs) were co-processed for mineralization and enhanced leaching simultaneously. Based on frontier orbital theory and bond energy theory, possible decomposition pathways of CFCs were speculated. Enhanced leaching process was studied in detail. When experimental conditions were 300 °C and 8.8 MPa, the mineralization rates of organofluorine and organochlorine in CFCs were 83.68% and 93.37%, respectively. Leaching agent generated by the hydrothermal treatment of CFCs leached GaAs effectively, and the leaching rates of gallium and arsenic were 95.74% and 99.89%, respectively. Converting CFCs into leaching agent will not only avoid ozone layer depletion but also save the cost of hazardous waste treatment and realize economic benefits. Environmental impact assessment indicated that the proposed Ga recycling route allows remarkable reduction of total environmental impacts compared with published processes.
Keywords	arsenic ; chlorinated hydrocarbons ; chlorofluorocarbons ; energy ; environmental assessment ; gallium ; hazardous waste ; hot water treatment ; ionization ; mineralization ; ozonosphere ; solar collectors ; waste treatment
Language	English
Dates of publication	2023-0105
Publishing place	Elsevier B.V.
Document type	Article
ZDB-ID	1491302-1
ISSN	1873-3336 ; 0304-3894
ISSN (online)	1873-3336
ISSN	0304-3894
DOI	10.1016/j.jhazmat.2022.129918
Database	NAL-Catalogue (AGRICOLA)

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Article ; Online: Extracellular Vesicles: A Crucial Player in the Intestinal Microenvironment and Beyond.

Wang, Shumeng / Luo, Junyi / Wang, Hailong / Chen, Ting / Sun, Jiajie / Xi, Qianyun / Zhang, Yongliang

International journal of molecular sciences

2024 Volume 25, Issue 6

Abstract: The intestinal ecological environment plays a crucial role in nutrient absorption and overall well-being. In recent years, research has focused on the effects of extracellular vesicles (EVs) in both physiological and pathological conditions of the ... ...

Abstract	The intestinal ecological environment plays a crucial role in nutrient absorption and overall well-being. In recent years, research has focused on the effects of extracellular vesicles (EVs) in both physiological and pathological conditions of the intestine. The intestine does not only consume EVs from exogenous foods, but also those from other endogenous tissues and cells, and even from the gut microbiota. The alteration of conditions in the intestine and the intestinal microbiota subsequently gives rise to changes in other organs and systems, including the central nervous system (CNS), namely the microbiome-gut-brain axis, which also exhibits a significant involvement of EVs. This review first gives an overview of the generation and isolation techniques of EVs, and then mainly focuses on elucidating the functions of EVs derived from various origins on the intestine and the intestinal microenvironment, as well as the impacts of an altered intestinal microenvironment on other physiological systems. Lastly, we discuss the role of microbial and cellular EVs in the microbiome-gut-brain axis. This review enhances the understanding of the specific roles of EVs in the gut microenvironment and the central nervous system, thereby promoting more effective treatment strategies for certain associated diseases.
MeSH term(s)	Extracellular Vesicles ; Brain-Gut Axis ; Central Nervous System ; Environment ; Food
Language	English
Publishing date	2024-03-20
Publishing country	Switzerland
Document type	Journal Article ; Review
ZDB-ID	2019364-6
ISSN	1422-0067 ; 1422-0067 ; 1661-6596
ISSN (online)	1422-0067
ISSN	1422-0067 ; 1661-6596
DOI	10.3390/ijms25063478
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: Effect of Gas Diffusion Layer Notch Arrangement and Gradient Depth on the Performance of Proton Exchange Membrane Fuel Cells in the Serpentine Flow Field.

Zhang, Heng / Zhang, Lili / Zhang, Yongliang / Hou, Zhanju / Liu, Jian

ACS omega

2023 Volume 8, Issue 11, Page(s) 10191–10201

Abstract: The structure of the gas diffusion layer (GDL) of a proton exchange membrane fuel cell (PEMFC) affects the transfer of the reaction gas and the water flooding phenomenon. First, the three-dimensional numerical model of the GDL was reconstructed by the ... ...

Abstract	The structure of the gas diffusion layer (GDL) of a proton exchange membrane fuel cell (PEMFC) affects the transfer of the reaction gas and the water flooding phenomenon. First, the three-dimensional numerical model of the GDL was reconstructed by the stochastic reconstruction method, and the kinetic behaviors of liquid water in the conventional GDL, circular groove GDL, and elliptical groove GDL were compared and analyzed, based on which the liquid water penetration time, the effective diffusion rate of oxygen, and relative permeability of water in the three GDLs were analyzed, and the results of the study found that the circular groove GDL had the best drainage effect. Second, based on the PEMFC with serpentine channels, an electrochemical model of the GDL with circular grooves was arranged in the flow field, and the effects of the groove depth distribution and center spacing of circular grooves on its performance were numerically investigated. It was found that the presence of circular grooves enhanced the transfer rate of reactants from the GDL to the catalytic layer and increased the current density. Oxygen concentration uniformity and under-rib convection were enhanced when the groove depth was designed to have a power function distribution with an exponent close to 1, effectively reducing flooding. The best drainage effect was achieved when the groove spacing was 2 mm, and also the cell performance was more stable.
Language	English
Publishing date	2023-03-08
Publishing country	United States
Document type	Journal Article
ISSN	2470-1343
ISSN (online)	2470-1343
DOI	10.1021/acsomega.2c07632
Database	MEDical Literature Analysis and Retrieval System OnLINE

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