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  • 1
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    Online Resource
    Synthesis of rare earth containing single‐phase multicomponent metal carbides via liquid polymer precursor route
    Wiley ; 2020
    In:  Journal of the American Ceramic Society Vol. 103, No. 11 ( 2020-11), p. 6081-6087
    Details
    In: Journal of the American Ceramic Society, Wiley, Vol. 103, No. 11 ( 2020-11), p. 6081-6087
    Abstract: Novel high‐entropy carbide ceramics (HEC) containing rare earth metals, namely (Ti, Zr, Hf, Ta, La, Y)C, (Ti, Zr, Hf, Ta, Nb, La, Y)C, and (Ti, Zr, Hf, Ta, Nb, Mo, W, La)C were prepared with single‐phase structure by polymer precursor method. Controlled co‐hydrolysis and polycondensation of equiatomic metal‐containing monomers were conducted successively, followed by blending allyl‐functional novolac resin as carbon source, and the polymer precursors were obtained as clear viscous liquid solutions. The single‐phase formation possibility was theoretically analyzed from the aspects of size‐effect parameter δ of the designed compositions. All as‐obtained ceramics possessed single face‐centered‐cubic structure of metal carbides and high‐compositional uniformity from nanoscale to microscale. The (Ti, Zr, Hf, Ta, Nb, Mo, W, La)C ceramic powder pyrolyzed at 1800°C exhibited low‐oxygen impurity content of 1.2 wt%. Thus, multicomponent high‐entropy carbide nanoceramics with over five metal elements containing even rare earth element were firstly synthesized and characterized.
    Type of Medium: Online Resource
    ISSN: 0002-7820 , 1551-2916
    URL: Issue
    URL: Article
    DOI: 10.1111/jace.v103.11
    DOI: 10.1111/jace.17332
    RVK:
    VA 1120
    Language: English
    Publisher: Wiley
    Publication Date: 2020
    detail.hit.zdb_id: 2008170-4
    detail.hit.zdb_id: 219232-9
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  • 2
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    Gradient Concentration Refilling of N Stabilizes Oxygen Vacancies for Enhanced Zn 2+ Storage
    Wiley ; 2023
    In:  Advanced Energy Materials
    Details
    In: Advanced Energy Materials, Wiley
    Abstract: The introduction of oxygen vacancies into aqueous zinc ion battery (ZIB) cathodes can significantly improve the diffusion kinetics of Zn 2+ , endowing enhanced electrochemical performance. However, the stability of oxygen vacancies in batteries during aqueous electrolyte cycling has been overlooked. Here, the oxygen vacancy is stabilized by the refilling of different impurity atoms, and gradient concentration refilling of N achieves the most stable state of the oxygen vacancy with minimum formation energy (4.77 eV). The obtained Zn 3 V 2 O 7 (OH) 2 ·2H 2 O with gradient N refilling of partial oxygen vacancies (N‐V O ‐ZVO) achieves more stable oxygen vacancies and a low Zn 2+ diffusion energy barrier (0.19 eV) with an ultra‐high rate performance of 186 mAh g −1 at 100 A g −1 and capacity retention rate of 84.9% after 10 000 cycles.
    Type of Medium: Online Resource
    ISSN: 1614-6832 , 1614-6840
    URL: Article
    DOI: 10.1002/aenm.202301730
    Language: English
    Publisher: Wiley
    Publication Date: 2023
    detail.hit.zdb_id: 2594556-7
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  • 3
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    Scalable three‐dimensional hybrid continuum‐discrete multiscale modeling of granular media
    Wiley ; 2022
    In:  International Journal for Numerical Methods in Engineering Vol. 123, No. 12 ( 2022-06-30), p. 2872-2893
    Details
    In: International Journal for Numerical Methods in Engineering, Wiley, Vol. 123, No. 12 ( 2022-06-30), p. 2872-2893
    Abstract: This study presents a scalable three‐dimensional (3D) multiscale framework for continuum‐discrete modeling of granular materials. The proposed framework features rigorous coupling of a continuum‐based material point method (MPM) and a discrete approach discrete element method (DEM) to enable cross‐scale modeling of boundary value problems pertaining to granular media. It employs MPM to solve the governing equations of a macroscopic continuum domain for a boundary value problem that may undergo large deformation. The required loading‐path‐dependent constitutive responses at each material point of the MPM are provided by a DEM solution based on grain‐scale contact‐based discrete simulations that receive macroscopic information at the specific material point as boundary conditions. This hierarchical coupling enables direct dialogs between the macro and micro scales of granular media while fully harnessing the predictive advantages of both MPM and DEM at the two scales. An effective, scalable parallel scheme is further developed, based on the flat message passing interface (MPI) model, to address the computational cost of the proposed framework for 3D large‐scale simulations. We demonstrate that the proposed parallel scheme may offer up to 32X and 40X speedup in strong and weak scaling tests, respectively, significantly empowering the numerical performance and predictive capability of the proposed framework. The 3D parallelized multiscale framework is validated by an element test and a column collapse problem, before being applied to simulate the intrusion of a solid object. The multiscale simulation successfully captures the characteristic response of intrusion as postulated by the modified Archimedes' law theory. The progressive development of the stagnant zone during the intrusion is further examined from a cross‐scale perspective.
    Type of Medium: Online Resource
    ISSN: 0029-5981 , 1097-0207
    URL: Issue
    URL: Article
    DOI: 10.1002/nme.v123.12
    DOI: 10.1002/nme.6963
    Language: English
    Publisher: Wiley
    Publication Date: 2022
    detail.hit.zdb_id: 241381-4
    detail.hit.zdb_id: 1480873-0
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  • 4
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    SNAI2 mutation causes human piebaldism
    Wiley ; 2014
    In:  American Journal of Medical Genetics Part A Vol. 164, No. 3 ( 2014-03), p. 855-857
    Details
    In: American Journal of Medical Genetics Part A, Wiley, Vol. 164, No. 3 ( 2014-03), p. 855-857
    Type of Medium: Online Resource
    ISSN: 1552-4825 , 1552-4833
    URL: Issue
    URL: Article
    DOI: 10.1002/ajmg.a.v164a.3
    DOI: 10.1002/ajmg.a.36332
    Language: English
    Publisher: Wiley
    Publication Date: 2014
    detail.hit.zdb_id: 1493479-6
    SSG: 12
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  • 5
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    A thread‐block‐wise computational framework for large‐scale hierarchical continuum‐discrete modeling of granular media
    Wiley ; 2021
    In:  International Journal for Numerical Methods in Engineering Vol. 122, No. 2 ( 2021-01-30), p. 579-608
    Details
    In: International Journal for Numerical Methods in Engineering, Wiley, Vol. 122, No. 2 ( 2021-01-30), p. 579-608
    Abstract: This article presents a novel, scalable parallel computing framework for large‐scale and multiscale simulations of granular media. Key to the new framework is an innovative thread‐block‐wise representative volume element (RVE) parallelism, inspired by the resemblance between a typical multiscale computational hierarchy and the hierarchical thread structure of graphics processing units (GPUs). To solve a hierarchical multiscale problem, all computation in an RVE is assigned a single block of threads so that the RVE runs entirely on a GPU to avoid frequent data exchange with the host CPU. The thread blocks can meanwhile run in an asynchronization mode, which implicitly guarantees the independence of inter‐RVE computation as featured by the hierarchical multiscale structure. The parallel computing algorithms are formulated and implemented in an in‐house code, GoDEM , involving the GPU‐specific techniques such as coalesced access, shared memory utilization, and unified memory implementation. Benchmark and performance tests are conducted against an open‐source CPU‐based DEM code under three typical loading conditions. The performance of GoDEM is examined with varying thread‐block size and register pressure of the GPU, and RVE number. It reveals that increasing GPU occupancy by decreasing register pressure results in a significant degradation rather than improvement in performance. We further demonstrate that the proposed GPU parallelism framework may achieve a saturated speedup of approximately 350 compared with the single‐CPU‐core code. As a demonstration on its application for multiscale modeling of granular media, the material point method is coupled with the new framework powered DEM to simulate a typical engineering‐scale problem involving tens of millions of total particles having to be handled. It demonstrates that a speedup of approximately 91 can be achieved by using the proposed framework, compared with the performance of a similar CPU program running on a cluster node of 44 parallel threads. The study offers a viable future solution to large‐scale and multiscale modeling of granular media.
    Type of Medium: Online Resource
    ISSN: 0029-5981 , 1097-0207
    URL: Issue
    URL: Article
    DOI: 10.1002/nme.v122.2
    DOI: 10.1002/nme.6549
    Language: English
    Publisher: Wiley
    Publication Date: 2021
    detail.hit.zdb_id: 241381-4
    detail.hit.zdb_id: 1480873-0
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  • 6
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    A semi‐implicit material point method based on fractional‐step method for saturated soil
    Wiley ; 2021
    In:  International Journal for Numerical and Analytical Methods in Geomechanics Vol. 45, No. 10 ( 2021-07), p. 1405-1436
    Details
    In: International Journal for Numerical and Analytical Methods in Geomechanics, Wiley, Vol. 45, No. 10 ( 2021-07), p. 1405-1436
    Abstract: In this paper, a new formulation of material point method (MPM) to model coupled soil deformation and pore fluid flow problems is presented within the framework of the theory of porous media. The saturated porous medium is assumed to be consisting of incompressible pore fluid and deformable soil skeleton made up of incompressible solid grains. The main difference of the proposed MPM algorithm is the implicit treatment of pore‐water pressure which satisfies its incompressibility internal constraint. The resulting solid‐fluid coupled equations are solved by using a splitting algorithm based on the Chorin's projection method. The splitting algorithm helps to mitigate numerical instabilities at the incompressibility limit when equal‐order interpolation functions are used. The key strengths of the proposed semi‐implicit coupled MPM formulation is its capability to reduce pressure oscillations as well as to increase the time step size, which is independent of the fluid incremental strain level and the soil permeability. The proposed semi‐implicit MPM is validated by comparing the numerical results with the analytical solutions of several numerical tests, including 1D and 2D plane‐strain consolidation problems. To demonstrate the capability of the proposed method in simulating practical engineering problems involving large deformations, a hydraulic process leading to slope failure is studied, and the numerical result is validated by the monitored data.
    Type of Medium: Online Resource
    ISSN: 0363-9061 , 1096-9853
    URL: Issue
    URL: Article
    DOI: 10.1002/nag.v45.10
    DOI: 10.1002/nag.3207
    Language: English
    Publisher: Wiley
    Publication Date: 2021
    detail.hit.zdb_id: 1494703-1
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  • 7
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    Effects of process conditions on tensile strength and crystallinity of polymeric parts fabricated using ultrasonic vibration‐assisted injection molding
    Wiley ; 2022
    In:  Polymer Engineering & Science Vol. 62, No. 7 ( 2022-07), p. 2119-2130
    Details
    In: Polymer Engineering & Science, Wiley, Vol. 62, No. 7 ( 2022-07), p. 2119-2130
    Abstract: Polymeric parts have been widely used for various applications and injection molding is one of the most commonly used approaches to fabricate polymeric parts. Both the mechanical properties and microstructures of fabricated parts are severely affected by the process conditions. In this article, polyamide (PA66) was selected as the exemplary polymer to make dogbone‐shaped polymeric specimens. First, the effects of key process parameters including melt temperature, mold temperature, injection pressure, and injection speed on the tensile strength and crystallinity of the specimens were systematically investigated. Then, the effects of external ultrasonic vibration field on the mechanical properties and microstructures were studied using tensile tests, X‐ray diffraction, and polarizing light microscope imaging. After that, the orthogonal experiments were designed to analyze the affecting extent of each process parameter and achieve the optimal combination of the process parameters. Finally, using the optimal process conditions, the polymeric part with the best tensile strength and crystallinity was successfully fabricated. The knowledge from this article can be expanded to the injection molding of polymeric parts from other polymers, unveiling the mechanisms during fabrication and providing guidelines for the selection of optimal process conditions in the future.
    Type of Medium: Online Resource
    ISSN: 0032-3888 , 1548-2634
    URL: Issue
    URL: Article
    DOI: 10.1002/pen.v62.7
    DOI: 10.1002/pen.25993
    Language: English
    Publisher: Wiley
    Publication Date: 2022
    detail.hit.zdb_id: 2006718-5
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  • 8
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    The initial experience of left bundle branch area pacing in patients with hypertrophic cardiomyopathy
    Wiley ; 2022
    In:  Pacing and Clinical Electrophysiology Vol. 45, No. 9 ( 2022-09), p. 1065-1074
    Details
    In: Pacing and Clinical Electrophysiology, Wiley, Vol. 45, No. 9 ( 2022-09), p. 1065-1074
    Abstract: Whether left bundle branch area pacing (LBBAP) could be achieved in patients with hypertrophic cardiomyopathy (HCM) requiring ventricular pacing remains unknown. The present study aimed to investigate the feasibility and effect of LBBAP in HCM. Methods Patients with HCM who underwent LBBAP were recruited from November 2018 to September 2021. Clinical characteristics, echocardiographic, and pacing parameters were prospectively collected at baseline and during follow‐up. Results Eleven consecutive HCM patients who attempted LBBAP were included (mean age 64.0 ± 8.7 years, female 45.5%, mean interventricular septum 16.7 mm). The success rate of LBBAP was 36.4% (4/11) and the reason for failed LBBAP in other seven HCM patients was the inability to screw the lead into the deep septum or capture the left bundle branch. Patients with successful LBBAP had significantly narrower QRS duration than those with failed cases (118.0 ± 3.7 ms vs. 140.9 ± 9.4 ms, p  = .01) while the capture thresholds, sensing amplitudes, and pacing impedances were similar. Successful cases presented with less positive late gadolinium enhancement (25.0% vs. 71.4%, p  = .02) and thinner interventricular septum thickness (14.5 ± 1.0 mm vs. 18.0 ± 2.5 mm, p  = .02) compared with failed cases. Pacing parameters remained stable and no procedure‐related complications occurred during a mean follow‐up of 8.9 ± 7.3 months. Conclusion LBBAP may be successfully achieved in less than half of HCM patients due to thick interventricular septum and heavy burden of myocardial fibrosis. Pacing strategies should be cautiously considered in patients with HCM.
    Type of Medium: Online Resource
    ISSN: 0147-8389 , 1540-8159
    URL: Issue
    URL: Article
    DOI: 10.1111/pace.v45.9
    DOI: 10.1111/pace.14563
    Language: English
    Publisher: Wiley
    Publication Date: 2022
    detail.hit.zdb_id: 2037547-5
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  • 9
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    Single Cell RNA Sequencing Identifies a Unique Inflammatory Macrophage Subset as a Druggable Target for Alleviating Acute Kidney Injury
    Wiley ; 2022
    In:  Advanced Science Vol. 9, No. 12 ( 2022-04)
    Details
    In: Advanced Science, Wiley, Vol. 9, No. 12 ( 2022-04)
    Abstract: Acute kidney injury (AKI) is a complex clinical disorder associated with poor outcomes. Targeted regulation of the degree of inflammation has been a potential strategy for AKI management. Macrophages are the main effector cells of kidney inflammation. However, macrophage heterogeneity in ischemia reperfusion injury induced AKI (IRI‐AKI) remains unclear. Using single‐cell RNA sequencing of the mononuclear phagocytic system in the murine IRI model, the authors demonstrate the complementary roles of kidney resident macrophages (KRMs) and monocyte‐derived infiltrated macrophages (IMs) in modulating tissue inflammation and promoting tissue repair. A unique population of S100a9 hi Ly6c hi IMs is identified as an early responder to AKI, mediating the initiation and amplification of kidney inflammation. Kidney infiltration of S100A8/A9 + macrophages and the relevance of renal S100A8/A9 to tissue injury is confirmed in human AKI. Targeting the S100a8/a9 signaling with small‐molecule inhibitors exhibits renal protective effects represented by improved renal function and reduced mortality in bilateral IRI model, and decreased inflammatory response, ameliorated kidney injury, and improved long‐term outcome with decreased renal fibrosis in the unilateral IRI model. The findings support S100A8/A9 blockade as a feasible and clinically relevant therapy potentially waiting for translation in human AKI.
    Type of Medium: Online Resource
    ISSN: 2198-3844 , 2198-3844
    URL: Issue
    URL: Article
    DOI: 10.1002/advs.v9.12
    DOI: 10.1002/advs.202103675
    Language: English
    Publisher: Wiley
    Publication Date: 2022
    detail.hit.zdb_id: 2808093-2
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  • 10
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    Structure and in vitro digestibility on complex of corn starch with soy isoflavone
    Wiley ; 2020
    In:  Food Science & Nutrition Vol. 8, No. 11 ( 2020-11), p. 6061-6068
    Details
    In: Food Science & Nutrition, Wiley, Vol. 8, No. 11 ( 2020-11), p. 6061-6068
    Abstract: Rapid starch digestion rate is negative for the normal level of human blood glucose. This study investigated the protective effects of corn starch (CS) complexed with soy isoflavone (SI) on the control of starch digestibility and glycemic index (GI). The structure of the corn starch–soy isoflavone (CS‐SI) complexes was characterized by Fourier transform infrared (FT‐IR), X‐ray diffraction (XRD), Thermogravimetric analysis (TGA), and Differential scanning calorimetry (DSC), and the complexes digestibility was evaluated using in vitro digestion model. The results of FT‐IR spectrum showed that, compared with corn starch, new characteristic peaks were not occurred in CS‐SI complexes, and the value of R 1047/1022 was decreased, which indicated the short‐range structure of CS‐SI complexes had been reduced. The V‐shaped structure characteristic peaks occurred obviously in CS‐SI complexes detected by XRD patterns, which formed a new crystalline structure. The thermal stability was improved in CS‐SI complexes revealed by TGA and DTG curves that the thermal cracking temperature increased from 315°C to 320°C. The enthalpy ( ΔH ) of CS‐SI complexes decreased from 2.34 J/g to 1.75 J/g showed by DSC data, which indicated that the ordered structure of starch was destroyed. Furthermore, the content of resistant starch increased from 10.53% to 21.78% and predicted glycemic index (pGI) reduced in CS‐SI complexes. In conclusion, the digestibility and pGI of starch can be improved by complexed with soy isoflavone.
    Type of Medium: Online Resource
    ISSN: 2048-7177 , 2048-7177
    URL: Issue
    URL: Article
    DOI: 10.1002/fsn3.v8.11
    DOI: 10.1002/fsn3.1896
    Language: English
    Publisher: Wiley
    Publication Date: 2020
    detail.hit.zdb_id: 2703010-6
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