LIVIVO - The Search Portal for Life Sciences

zur deutschen Oberfläche wechseln
Advanced search

Search results

Result 1 - 10 of total 305

Search options

  1. Article: Investigation of the influence of plasma proteome on brain structure: a Mendelian randomization study.

    Ma, Shengyi / Xu, Fengzhe / Fu, Yuanqing / Zheng, Ju-Sheng

    Journal of genetics and genomics = Yi chuan xue bao

    2024  

    Language English
    Publishing date 2024-04-10
    Publishing country China
    Document type Letter
    ZDB-ID 2374568-X
    ISSN 1873-5533 ; 1673-8527
    ISSN (online) 1873-5533
    ISSN 1673-8527
    DOI 10.1016/j.jgg.2024.03.017
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  2. Article: A meta-analysis of the therapeutic effect of probiotic intervention in obese or overweight adolescents.

    Duan, Yuanqing / Wang, Lanping / Ma, Yan / Ning, Lei / Zhang, Xinhuan

    Frontiers in endocrinology

    2024  Volume 15, Page(s) 1335810

    Abstract: Background & aims: Existing evidence on the possible effects of probiotics on obese or overweight adolescents has not been fully established. Therefore, the aim of this study was to explore the effects of probiotic supplementation on anthropometric ... ...

    Abstract Background & aims: Existing evidence on the possible effects of probiotics on obese or overweight adolescents has not been fully established. Therefore, the aim of this study was to explore the effects of probiotic supplementation on anthropometric indices, inflammatory markers and metabolic indices in obese or overweight adolescents.
    Methods: The literature up to March 2023 related to probiotic intervention in obese or overweight adolescents was searched and screened from multiple databases, including the CNKI(China national knowledge infrastructure), CBM(Chinese biomedical literature database), PubMed, EmBase, and Cochrane library databases. All randomized controlled trials using probiotic supplements in obese or overweight adolescents were included in this systematic review and meta-analysis.
    Results: A total of 8 studies that met the inclusion criteria were included in this study. There were 201 cases in the experimental group (probiotic treatment) and 190 cases in the control group. Compared to the control group, probiotic intervention in adolescents resulted in a decrease in body mass index, fasting blood glucose and C-reactive protein with WMD(Weighted mean difference) and 95% CI of -2.53 (-4.8 to -0.26) kg/m
    Conclusion: According to our results, probiotic supplementation was beneficial in managing metabolic indicators such as fasting blood glucose, body mass index and inflammation-related C-reactive protein in overweight or obese adolescents. Further large scale studies are warranted to confirm present findings and to identify the effects and mechanisms to provide more precise evidence for clinical intervention.
    Systematic review registration: doi: 10.37766/inplasy2024.1.0081, identifier INPLASY202410081.
    MeSH term(s) Adolescent ; Humans ; Overweight ; Blood Glucose ; C-Reactive Protein ; Obesity/drug therapy ; Probiotics/therapeutic use ; Randomized Controlled Trials as Topic
    Chemical Substances Blood Glucose ; C-Reactive Protein (9007-41-4)
    Language English
    Publishing date 2024-01-30
    Publishing country Switzerland
    Document type Meta-Analysis ; Systematic Review ; Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2592084-4
    ISSN 1664-2392
    ISSN 1664-2392
    DOI 10.3389/fendo.2024.1335810
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  3. Article ; Online: To cheat or to treat? Fungus gnat pollination in Aspidistra.

    Lin, Wei / Xu, Yuanqing / Jiang, Yuhui / Ma, Zhonghui

    Ecology

    2022  Volume 103, Issue 8, Page(s) e3729

    MeSH term(s) Animals ; Bromus ; Diptera ; Flowers ; Fungi ; Pollen ; Pollination
    Language English
    Publishing date 2022-05-28
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2010140-5
    ISSN 1939-9170 ; 0012-9658
    ISSN (online) 1939-9170
    ISSN 0012-9658
    DOI 10.1002/ecy.3729
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  4. Article ; Online: Finite-Time Height Control of Quadrotor UAVs

    Shuaihe Zhao / Yuanqing Xia / Liqun Ma / Hongjiu Yang

    Applied Sciences, Vol 13, Iss 7914, p

    2023  Volume 7914

    Abstract: The quadrotor Unmanned Aerial Vehicle (UAV) belongs to an open-loop unstable nonlinear system, which also has the characteristics of underdrive, strong coupling and external disturbance. In the height control of quadrotor UAVs, the traditional sliding ... ...

    Abstract The quadrotor Unmanned Aerial Vehicle (UAV) belongs to an open-loop unstable nonlinear system, which also has the characteristics of underdrive, strong coupling and external disturbance. In the height control of quadrotor UAVs, the traditional sliding mode control (SMC) and PID methods cannot quickly and effectively eliminate disturbance effects caused by gust, aerodynamic drag and other factors, which indicates that the quadrotor UAV cannot return to its predetermined trajectory. To this end, this paper proposes a dual closed-loop finite-time height control method for the quadrotor UAV. The proposed method is able to estimate and compensate for the disturbance in the height control and make up for the lack of anti-disturbance ability in the control process. More specifically, a finite-time Extended State Observer (ESO) and a finite-time super-twisting controller are designed for the velocity control system to compensate for the total disturbance and track the rapidly changing expected signal. An integral sliding mode controller is designed for the height control system. Simulation results show that the proposed method can reduce the chattering phenomenon of traditional SMC and improve both control accuracy and convergence speed.
    Keywords quadrotor UAV ; extended state observer ; super-twisting controller ; integral sliding mode controller ; height control ; Technology ; T ; Engineering (General). Civil engineering (General) ; TA1-2040 ; Biology (General) ; QH301-705.5 ; Physics ; QC1-999 ; Chemistry ; QD1-999
    Subject code 629
    Language English
    Publishing date 2023-07-01T00:00:00Z
    Publisher MDPI AG
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    More links

    Kategorien

  5. Article ; Online: Dynamic Event-Based Adaptive Fixed-Time Control for Uncertain Strict-Feedback Nonlinear Systems With State Constraints.

    Shen, Ganghui / Huang, Panfeng / Ma, Zhiqiang / Zhang, Fan / Xia, Yuanqing

    IEEE transactions on cybernetics

    2023  Volume PP

    Abstract: In this article, the event-triggered fixed-time tracking control is investigated for uncertain strict-feedback nonlinear systems involving state constraints. By employing the universal transformed function (UTF) and coordinate transformation techniques ... ...

    Abstract In this article, the event-triggered fixed-time tracking control is investigated for uncertain strict-feedback nonlinear systems involving state constraints. By employing the universal transformed function (UTF) and coordinate transformation techniques into backstepping design procedure, the proposed control scheme ensures that all states are constrained within the time-varying asymmetric boundaries, and meanwhile, the undesired feasibility condition existing in other constrained controllers can be removed elegantly. Different from the existing static event-triggered mechanism, a dynamic event-triggered mechanism (DETM) is devised via constructing a novel dynamic function, so that the communication burden from the controller to actuator is further alleviated. Furthermore, with the aid of adaptive neural network (NN) technique and generalized first-order filter, together with Lyapunov theory, it is proved that the states of closed-loop system converge to small regions around zero with fixed-time convergence rate. The simulation results confirm the benefits of developed scheme.
    Language English
    Publishing date 2023-08-01
    Publishing country United States
    Document type Journal Article
    ISSN 2168-2275
    ISSN (online) 2168-2275
    DOI 10.1109/TCYB.2023.3293466
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  6. Article ; Online: Crystal Structure Regulation of CoSe

    Chen, Shuo / Yue, Kaiqin / Shi, Jiawei / Zheng, Zhicheng / He, Yuanqing / Wan, Hao / Chen, Gen / Zhang, Ning / Liu, Xiaohe / Ma, Renzhi

    Inorganic chemistry

    2024  Volume 63, Issue 16, Page(s) 7430–7441

    Abstract: Most nonoxide catalysts based on transition metal elements will inevitably change their primitive phases under anodic oxidation conditions in alkaline media. Establishing a relationship between the bulk phase and surface evolution is imperative to reveal ...

    Abstract Most nonoxide catalysts based on transition metal elements will inevitably change their primitive phases under anodic oxidation conditions in alkaline media. Establishing a relationship between the bulk phase and surface evolution is imperative to reveal the intrinsic catalytic active sites. In this work, it is demonstrated that the introduction of Fe facilitates the phase transition of orthorhombic CoSe
    Language English
    Publishing date 2024-04-11
    Publishing country United States
    Document type Journal Article
    ZDB-ID 1484438-2
    ISSN 1520-510X ; 0020-1669
    ISSN (online) 1520-510X
    ISSN 0020-1669
    DOI 10.1021/acs.inorgchem.4c00568
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  7. Article ; Online: Lifetime based axial contrast enable simple 3D-STED imaging.

    Ma, Yuanqing / Macmillan, Alex / Yang, Ying / Gaus, Katharina

    Methods and applications in fluorescence

    2022  Volume 10, Issue 3

    Abstract: Stimulated Emission Depletion (STED) microscopy increase spatial image resolution by laterally sharpening the illumination profile of the confocal microscope. However, it remains compromised in axial resolution. To improve axial STED resolution, ... ...

    Abstract Stimulated Emission Depletion (STED) microscopy increase spatial image resolution by laterally sharpening the illumination profile of the confocal microscope. However, it remains compromised in axial resolution. To improve axial STED resolution, constructive interference of the STED depletion beam must be formed surrounding the focal plane to turn off the fluorophores beyond the focal plane. For isotropic 3D-STED resolution, this axial STED interference pattern must be overlayed with the doughnut STED beam at nanometer accuracy. Such optical configurations can be challenging in alignment. In this current work, we introduced a straightforward lifetime based axial contrast in STED microscope by imaging the samples on an ITO coated glass coverslip. The STED laser generates surface plasmon resonance on the ITO surface that enhanced the metal induced energy transfer MIET effect on the ITO surface. The enhanced MIET effect established a lifetime gradient with ∼20% dynamic range that extend for mor than 400 nm from the ITO surface. The axial contrast based on the lifetime gradient was directly used for 3D-STED imaging of tubulin fibers inside COS-7 cells, where the vertical displacement of single tubulin fiber was revealed. Lifetime gating could be applied to further improve lateral spatial resolution. Considering that most common implementation of STED microscopes uses pulsed lasers and timing electronics, there is no optical modification of the microscope is required in the current 3D-STED approach.
    MeSH term(s) Animals ; COS Cells ; Chlorocebus aethiops ; Fluorescent Dyes ; Lighting ; Microscopy, Fluorescence/methods
    Chemical Substances Fluorescent Dyes
    Language English
    Publishing date 2022-03-25
    Publishing country England
    Document type Journal Article
    ISSN 2050-6120
    ISSN (online) 2050-6120
    DOI 10.1088/2050-6120/ac5e10
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  8. Article ; Online: Effects of

    Guo, Shiwei / Ma, Jiaxin / Xing, Yuanyuan / Xu, Yuanqing / Jin, Xiao / Yan, Sumei / Shi, Lulu / Zhang, Linghui / Shi, Binlin

    The journal of poultry science

    2023  Volume 60, Page(s) 2023024

    Abstract: Artemisia ... ...

    Abstract Artemisia annua
    Language English
    Publishing date 2023-09-14
    Publishing country Japan
    Document type Journal Article
    ZDB-ID 2197916-9
    ISSN 1349-0486 ; 1346-7395
    ISSN (online) 1349-0486
    ISSN 1346-7395
    DOI 10.2141/jpsa.2023024
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  9. Article ; Online: Comparative analyses of the air distributions created by attached ventilation with different air outlets

    Li Jiaxing / Li Angui / Ma Yuanqing / Ma Jiangyan / Huang Lin

    E3S Web of Conferences, Vol 356, p

    2022  Volume 01034

    Abstract: As an innovative ventilation mode, attached ventilation has been widely used in different types of buildings due to its high ventilation efficiency and energy saving. At present, the commonly used air outlet form is slot outlet. Considering the diversity ...

    Abstract As an innovative ventilation mode, attached ventilation has been widely used in different types of buildings due to its high ventilation efficiency and energy saving. At present, the commonly used air outlet form is slot outlet. Considering the diversity of application places, different air outlet form models (Slot outlet (SO), Rectangular outlet (RO), Circular outlet (CO), Semi-circular outlet (SCO)) were established in this paper. Air distributions of the attached ventilation under different air outlet forms are analyzed and compared. The results show that the attached jet thickness is larger under RO, CO, and SCO form. Compared with SO form, the jet velocities of other three forms decay slowly in the vertical region. The attached ventilation with different outlet forms can form an "air lake" in the occupied zone to ensure the comfort environment. This research provides design references for the design and application of the attached ventilation under different air outlet forms.
    Keywords Environmental sciences ; GE1-350
    Subject code 690
    Language English
    Publishing date 2022-01-01T00:00:00Z
    Publisher EDP Sciences
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    More links

    Kategorien

  10. Article ; Online: Biodiversity and distribution patterns of blooming jellyfish in the Bohai Sea revealed by eDNA metabarcoding.

    Ye, Lijing / Peng, Saijun / Ma, Yuanqing / Zhang, Wenjing / Wang, Lei / Sun, Xiyan / Zhang, Chen / Yeasmin, Munjira / Zhao, Jianmin / Dong, Zhijun

    BMC ecology and evolution

    2024  Volume 24, Issue 1, Page(s) 37

    Abstract: Background: The mass occurrence of scyphozoan jellyfish severely affects marine ecosystems and coastal economies, and the study of blooming jellyfish population dynamics has emerged in response. However, traditional ecological survey methods required ... ...

    Abstract Background: The mass occurrence of scyphozoan jellyfish severely affects marine ecosystems and coastal economies, and the study of blooming jellyfish population dynamics has emerged in response. However, traditional ecological survey methods required for such research have difficulties in detecting cryptic life stages and surveying population dynamics owing to high spatiotemporal variations in their occurrence. The environmental DNA (eDNA) technique is an effective tool for overcoming these limitations.
    Results: In this study, we investigated the biodiversity and spatial distribution characteristics of blooming jellyfish in the Bohai Sea of China using an eDNA metabarcoding approach, which covered the surface, middle, and bottom seawater layers, and sediments. Six jellyfish taxa were identified, of which Aurelia coerulea, Nemopilema nomurai, and Cyanea nozakii were the most dominant. These three blooming jellyfish presented a marked vertical distribution pattern in the offshore regions. A. coerulea was mainly distributed in the surface layer, whereas C. nozakii and N. nomurai showed a upper-middle and middle-bottom aggregation, respectively. Horizontally, A. coerulea and C. nozakii were more abundant in the inshore regions, whereas N. nomurai was mainly distributed offshore. Spearman's correlation analysis revealed a strong correlation between the eDNA of the three dominant blooming jellyfish species and temperature, salinity, and nutrients.
    Conclusions: Our study confirms the applicability of the eDNA approach to both biodiverstiy evaluation of blooming jellyfish and investigating their spatial distribution, and it can be used as a supplementary tool to traditional survey methods.
    MeSH term(s) Animals ; Ecosystem ; DNA, Environmental/genetics ; Cnidarian Venoms ; Cnidaria ; Scyphozoa/genetics ; Biodiversity
    Chemical Substances DNA, Environmental ; Cnidarian Venoms
    Language English
    Publishing date 2024-03-18
    Publishing country England
    Document type Journal Article
    ISSN 2730-7182
    ISSN (online) 2730-7182
    DOI 10.1186/s12862-024-02224-3
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

To top