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  1. Book ; Online: Covalent Organic Frameworks

    Gao, Yanan / Lu, Fei

    2023  

    Keywords Organic chemistry ; Chemistry
    Language English
    Size 1 electronic resource (122 pages)
    Publisher IntechOpen
    Document type Book ; Online
    Note English
    HBZ-ID HT030377695
    ISBN 9781803569611 ; 1803569611
    Database ZB MED Catalogue: Medicine, Health, Nutrition, Environment, Agriculture

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  2. Article ; Online: Global domain adaptation attention with data-dependent regulator for scene segmentation.

    Lei, Qiuyuan / Lu, Fei

    PloS one

    2024  Volume 19, Issue 2, Page(s) e0295263

    Abstract: Most semantic segmentation works have obtained accurate segmentation results through exploring the contextual dependencies. However, there are several major limitations that need further investigation. For example, most approaches rarely distinguish ... ...

    Abstract Most semantic segmentation works have obtained accurate segmentation results through exploring the contextual dependencies. However, there are several major limitations that need further investigation. For example, most approaches rarely distinguish different types of contextual dependencies, which may pollute the scene understanding. Moreover, local convolutions are commonly used in deep learning models to learn attention and capture local patterns in the data. These convolutions operate on a small neighborhood of the input, focusing on nearby information and disregarding global structural patterns. To address these concerns, we propose a Global Domain Adaptation Attention with Data-Dependent Regulator (GDAAR) method to explore the contextual dependencies. Specifically, to effectively capture both the global distribution information and local appearance details, we suggest using a stacked relation approach. This involves incorporating the feature node itself and its pairwise affinities with all other feature nodes within the network, arranged in raster scan order. By doing so, we can learn a global domain adaptation attention mechanism. Meanwhile, to improve the features similarity belonging to the same segment region while keeping the discriminative power of features belonging to different segments, we design a data-dependent regulator to adjust the global domain adaptation attention on the feature map during inference. Extensive ablation studies demonstrate that our GDAAR better captures the global distribution information for the contextual dependencies and achieves the state-of-the-art performance on several popular benchmarks.
    MeSH term(s) Durable Medical Equipment ; Benchmarking ; Semantics ; Image Processing, Computer-Assisted
    Language English
    Publishing date 2024-02-14
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2267670-3
    ISSN 1932-6203 ; 1932-6203
    ISSN (online) 1932-6203
    ISSN 1932-6203
    DOI 10.1371/journal.pone.0295263
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Data-Driven Model Reduction for Stochastic Burgers Equations.

    Lu, Fei

    Entropy (Basel, Switzerland)

    2020  Volume 22, Issue 12

    Abstract: We present a class of efficient parametric closure models for 1D stochastic Burgers equations. Casting it as statistical learning of the flow map, we derive the parametric form by representing the unresolved high wavenumber Fourier modes as functionals ... ...

    Abstract We present a class of efficient parametric closure models for 1D stochastic Burgers equations. Casting it as statistical learning of the flow map, we derive the parametric form by representing the unresolved high wavenumber Fourier modes as functionals of the resolved variable's trajectory. The reduced models are nonlinear autoregression (NAR) time series models, with coefficients estimated from data by least squares. The NAR models can accurately reproduce the energy spectrum, the invariant densities, and the autocorrelations. Taking advantage of the simplicity of the NAR models, we investigate maximal space-time reduction. Reduction in space dimension is unlimited, and NAR models with two Fourier modes can perform well. The NAR model's stability limits time reduction, with a maximal time step smaller than that of the K-mode Galerkin system. We report a potential criterion for optimal space-time reduction: the NAR models achieve minimal relative error in the energy spectrum at the time step, where the K-mode Galerkin system's mean Courant-Friedrichs-Lewy (CFL) number agrees with that of the full model.
    Language English
    Publishing date 2020-11-30
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2014734-X
    ISSN 1099-4300 ; 1099-4300
    ISSN (online) 1099-4300
    ISSN 1099-4300
    DOI 10.3390/e22121360
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: The changing colour of carrot.

    Guo, Yafei / Lu, Fei

    Nature plants

    2023  Volume 9, Issue 10, Page(s) 1583–1584

    MeSH term(s) Daucus carota/genetics ; Color ; Carotenoids
    Chemical Substances Carotenoids (36-88-4)
    Language English
    Publishing date 2023-09-11
    Publishing country England
    Document type Journal Article ; Comment
    ISSN 2055-0278
    ISSN (online) 2055-0278
    DOI 10.1038/s41477-023-01523-9
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Retraction Note: Serum bilirubin levels in primary Sjögren's syndrome: an association with interstitial lung disease.

    Peng, You-Fan / Lu, Fei-Yan / Ma, Li-Ya

    BMC pulmonary medicine

    2024  Volume 24, Issue 1, Page(s) 73

    Language English
    Publishing date 2024-02-07
    Publishing country England
    Document type Retraction of Publication
    ZDB-ID 2059871-3
    ISSN 1471-2466 ; 1471-2466
    ISSN (online) 1471-2466
    ISSN 1471-2466
    DOI 10.1186/s12890-024-02876-3
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: High moisture extrusion of soybean protein isolate: Effect of β-glucan on physicochemical properties of extrudates.

    Ye, Xinhui / Su, Xiaolin / Xiao, Tong / Lu, Fei / Xie, Tiemin

    Food chemistry

    2024  Volume 441, Page(s) 138329

    Abstract: This study is focused on exploring the effect of twin-screw high-moisture extrusion technology on the physico-chemical properties of β-glucan-soybean protein isolate (SPI-BG) extrudates. Different proportions (0 %, 1 %, 2 %, 3 %, 4 %, 5 %) of oat β- ... ...

    Abstract This study is focused on exploring the effect of twin-screw high-moisture extrusion technology on the physico-chemical properties of β-glucan-soybean protein isolate (SPI-BG) extrudates. Different proportions (0 %, 1 %, 2 %, 3 %, 4 %, 5 %) of oat β-glucan (BG) were added with soybean protein isolate (SPI) to prepare SPI-BG extrudates. Results showed that the addition of a high quantity of β-glucan (BG) decreased the elastic properties of soy protein isolate (SPI) extrudates and then increased. The strengthening of S1-S2-S3 interactions (hydrogen bonds, hydrophobic interactions, and disulfide bonds) was primarily responsible for this trend. Fourier transform infrared (FTIR) spectral analysis was conducted which revealed that BG did not significant affect random coil content of SPI. However, it was observed that α-helix content was increased significantly and the β-sheet content was decreased. An observation was noted in the value of enthalpy (ΔH) change that increased from 115.80 J/g to 159.68 J/g.
    MeSH term(s) Soybean Proteins/chemistry ; Hydrophobic and Hydrophilic Interactions ; Hydrogen Bonding ; beta-Glucans
    Chemical Substances Soybean Proteins ; beta-Glucans
    Language English
    Publishing date 2024-01-09
    Publishing country England
    Document type Journal Article
    ZDB-ID 243123-3
    ISSN 1873-7072 ; 0308-8146
    ISSN (online) 1873-7072
    ISSN 0308-8146
    DOI 10.1016/j.foodchem.2023.138329
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Bonn / Germany

    Z 3634: Show issues

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  7. Article: Investigating the Influence of Fluctuating Humidity and Temperature on Creep Deformation in High-Performance Concrete Beams: A Comparative Study between Natural and Laboratorial Environmental Tests.

    Zhang, Yixue / Zhang, Jun / Mao, Jianghong / Lu, Fei / Jiang, Zhuqing

    Materials (Basel, Switzerland)

    2024  Volume 17, Issue 5

    Abstract: To investigate the influence of temperature and humidity variations on creep in high-performance concrete beams, beam tests were conducted in both natural and laboratory settings. The findings indicate that the variations in creep primarily stem from ... ...

    Abstract To investigate the influence of temperature and humidity variations on creep in high-performance concrete beams, beam tests were conducted in both natural and laboratory settings. The findings indicate that the variations in creep primarily stem from temperature changes, whereas humidity changes have little influence on fluctuations in both basic creep and total creep. The influence of humidity on creep is more strongly reflected in the magnitude of creep. Functions describing the influence of temperature and humidity on the creep behavior of high-performance concrete (HPC) subjected to fluctuating conditions are proposed. The findings were employed to examine creep deformation in engineering applications across four places. This study complements the correction method for the creep of members under fluctuating temperature and humidity. This research application can provide a basis for the calculation of the long-term deformation of HPC structures in natural environments.
    Language English
    Publishing date 2024-02-22
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2487261-1
    ISSN 1996-1944
    ISSN 1996-1944
    DOI 10.3390/ma17050998
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: Dynamic evolution characteristics and driving factors of tourism ecosystem health in China.

    Lu, Fei / Ren, Huaiguo / Zhai, Xinglong

    Frontiers in public health

    2023  Volume 11, Page(s) 1127980

    Abstract: Tourism ecosystem health is key to high-quality tourism development. China is now promoting sustainable development and high-quality transformation and upgrading of regional tourism; thus, the research on tourism ecosystem health is of practical ... ...

    Abstract Tourism ecosystem health is key to high-quality tourism development. China is now promoting sustainable development and high-quality transformation and upgrading of regional tourism; thus, the research on tourism ecosystem health is of practical significance. Based on the DPSIR model, an evaluation index system of tourism ecosystem health in China was constructed. Then the entropy weight method, spatial autocorrelation analysis, Markov chain analysis, and quantile regression were used to explore the dynamic evolution characteristics and driving factors of tourism ecosystem health in China from 2011 to 2020. The following conclusions were drawn: (1) The tourism ecosystem health in China showed an M-shaped fluctuation process as a whole, with significant spatial correlation and spatial difference. (2) There was a "path-dependent" and "self-locking" effect on the type transfer of tourism ecosystem health, and the type transfer was mainly between adjacent types in successive transfers, with the probability of downward transfer higher than upward transfer, and the geospatial background played a significant role in its dynamic evolution process. (3) In provinces with low tourism ecosystem health type, the negative effect of technological innovation capacity was more significant, and the influence coefficient of the positive effect of tourism environmental regulation and information technology level was larger, while in provinces with high tourism ecosystem health type, the negative effect of tourism industry agglomeration was more significant, and the influence coefficient of the positive effect of tourism industry structure and tourism land-use scale was larger.
    MeSH term(s) Ecosystem ; Tourism ; China ; Sustainable Development ; Industry
    Language English
    Publishing date 2023-02-20
    Publishing country Switzerland
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2711781-9
    ISSN 2296-2565 ; 2296-2565
    ISSN (online) 2296-2565
    ISSN 2296-2565
    DOI 10.3389/fpubh.2023.1127980
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: Reply to: Where was wheat domesticated?

    Zhao, Xuebo / Guo, Yafei / Lu, Fei

    Nature plants

    2023  Volume 9, Issue 8, Page(s) 1203–1206

    MeSH term(s) Triticum/genetics ; Phylogeny ; Genotype
    Language English
    Publishing date 2023-07-24
    Publishing country England
    Document type Letter ; Research Support, Non-U.S. Gov't ; Comment
    ISSN 2055-0278
    ISSN (online) 2055-0278
    DOI 10.1038/s41477-023-01468-z
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: Hypoxia-induced endothelial cell-derived exosome stimulates vascular smooth muscle cell proliferation and migration.

    Xiong, Qinggen / Lu, Fei / Xie, Xiaoming / Zhou, Wei

    Biomedical research (Tokyo, Japan)

    2023  Volume 44, Issue 6, Page(s) 245–255

    Abstract: This study mainly used human VSMCs and ECs cultured in vitro to investigate whether exosomes (Exos) are involved in the communication between ECs and VSMCs under hypoxia, and to explore the role and mechanism of ECs-derived exosomes in the abnormal ... ...

    Abstract This study mainly used human VSMCs and ECs cultured in vitro to investigate whether exosomes (Exos) are involved in the communication between ECs and VSMCs under hypoxia, and to explore the role and mechanism of ECs-derived exosomes in the abnormal proliferation of VSMCs. VSMCs proliferation and migration were assessed by a series of cell function assays after culturing VSMCs alone or co-culturing ECs under hypoxia or normoxia. Next, exosomes were extracted from ECs under hypoxia or normoxia and characterized. We then introduced ECs-Exos to observe their effects on VSMCs proliferation and migration, and further evaluated the expression of transforming growth factor-beta receptor 1 (TGFBR1) pathway-related proteins. Finally, the effect of ECs-Exos on VSMCs function was evaluated after knocking down TGFBR1 in ECs. VSMCs treated with ECs-Exos exhibited increased proliferation and migration ability in hypoxic environment, and the expression of TGFBR1 pathway-related proteins was upregulated. Administration of ECs-Exos with TGFβ1 knockdown conspicuously reversed the promoting effects of ECs-Exos on cell proliferation and migration under hypoxia. In summary, hypoxia affected the secretion of extracellular vesicles by endothelial cells, which can be internalized by VSMCs and accelerate the abnormal proliferation and migration of VSMCs by delivering TGFBR1.
    MeSH term(s) Humans ; Muscle, Smooth, Vascular/metabolism ; Receptor, Transforming Growth Factor-beta Type I/metabolism ; Exosomes/metabolism ; Endothelial Cells/metabolism ; Cell Proliferation ; Cells, Cultured ; Myocytes, Smooth Muscle/metabolism
    Chemical Substances Receptor, Transforming Growth Factor-beta Type I (EC 2.7.11.30)
    Language English
    Publishing date 2023-11-27
    Publishing country Japan
    Document type Journal Article
    ZDB-ID 604561-3
    ISSN 1880-313X ; 0388-6107
    ISSN (online) 1880-313X
    ISSN 0388-6107
    DOI 10.2220/biomedres.44.245
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Cologne/Königswinter

    Zs.A 1654: Show issues Location:
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    bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular
    Jg. 1995 - 2021: Lesesall (1.OG)
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