LIVIVO - The Search Portal for Life Sciences

zur deutschen Oberfläche wechseln
Advanced search

Search results

Result 1 - 10 of total 3315

Search options

  1. Book ; Thesis: Behandlung von Infektionen der Sternumwunde

    Liu, Juan / Kröger, Knut

    Determinanten für die Verweildauer und das Auftreten einer erneuten Infektion nach Abdeckung durch einen Muskellappen

    2023  

    Institution Universität Duisburg-Essen
    Author's details vorgelegt von Juan Liu ; 1. Gutachter: Herr Prof. Dr. med. K. Kröger, 2. Gutachter: Herr Prof. Dr. med. J. Dissemond
    Language German
    Size 74 Seiten, Illustrationen
    Publishing place Duisburg ; Essen
    Publishing country Germany
    Document type Book ; Thesis
    Thesis / German Habilitation thesis Dissertation, Universität Duisburg-Essen, 2023
    HBZ-ID HT030673229
    Database Catalogue ZB MED Medicine, Health

    Kategorien

    In stock of ZB MED Cologne/Königswinter

    Shelf markLoan statusLocation
    2024 E 617 order for loan Magazin

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

  2. Article: The Role of Grit in Students' L2 Engagement in the English as a Foreign Language Classroom.

    Liu, Juan

    Frontiers in psychology

    2021  Volume 12, Page(s) 749844

    Abstract: Due to the rapid development of teaching and learning English as a Foreign Language (EFL), on the one hand, and the arrival of positive psychology (PP) in the process of language education, on the other hand, student engagement has been burgeoned and got ...

    Abstract Due to the rapid development of teaching and learning English as a Foreign Language (EFL), on the one hand, and the arrival of positive psychology (PP) in the process of language education, on the other hand, student engagement has been burgeoned and got a noteworthy role in the academic field. The present review attempts to investigate the relationship of grit with students' L2 engagement, by examining both backgrounds and consequences of grit. Consequently, the effectiveness of findings for policymakers and academic experts is discussed, along with the prominence of strengthening grit in the scholastic contexts in order to cultivate character in learners and improve their prospects.
    Language English
    Publishing date 2021-09-07
    Publishing country Switzerland
    Document type Journal Article ; Review
    ZDB-ID 2563826-9
    ISSN 1664-1078
    ISSN 1664-1078
    DOI 10.3389/fpsyg.2021.749844
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

  3. Article ; Online: Finite element modelling of sound transmission in the Weberian apparatus of zebrafish (

    Marcé-Nogué, Jordi / Liu, Juan

    Journal of the Royal Society, Interface

    2024  Volume 21, Issue 210, Page(s) 20230553

    Abstract: Zebrafish, an essential vertebrate model, has greatly expanded our understanding of hearing. However, one area that remains unexplored is the biomechanics of the Weberian apparatus, crucial for sound conduction and perception. Using micro-computed ... ...

    Abstract Zebrafish, an essential vertebrate model, has greatly expanded our understanding of hearing. However, one area that remains unexplored is the biomechanics of the Weberian apparatus, crucial for sound conduction and perception. Using micro-computed tomography (μCT) bioimaging, we created three-dimensional finite element models of the zebrafish Weberian ossicles. These models ranged from the exact size to scaled isometric versions with constrained geometry (1 to 10 mm in ossicular chain length). Harmonic finite element analysis of all 11 models revealed that the resonance frequency of the zebrafish's Weberian ossicular chain is approximately 900 Hz, matching their optimal hearing range. Interestingly, resonance frequency negatively correlated with size, while the ratio of peak displacement and difference of resonance frequency between tripus and scaphium remained constant. This suggests the transmission efficiency of the ossicular chain and the homogeneity of resonance frequency at both ends of the chain are not size-dependent. We conclude that the Weberian apparatus's resonance frequency can explain zebrafish's best hearing frequency, and their biomechanical characteristics are not influenced by isometric ontogeny. As the first biomechanical modelling of atympanic ear and among the few non-human ear modelling, this study provides a methodological framework for further investigations into hearing mechanisms and the hearing evolution of vertebrates.
    MeSH term(s) Animals ; Zebrafish ; Finite Element Analysis ; X-Ray Microtomography ; Sound ; Vibration ; Perciformes
    Language English
    Publishing date 2024-01-10
    Publishing country England
    Document type Journal Article ; Research Support, N.I.H., Extramural
    ZDB-ID 2156283-0
    ISSN 1742-5662 ; 1742-5689
    ISSN (online) 1742-5662
    ISSN 1742-5689
    DOI 10.1098/rsif.2023.0553
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

  4. Article ; Online: Optimized Density Peak Clustering Algorithm by Natural Reverse Nearest Neighbor

    LIU Juan, WAN Jing

    Jisuanji kexue yu tansuo, Vol 15, Iss 10, Pp 1888-

    2021  Volume 1899

    Abstract: The density peak clustering algorithm is a density based clustering algorithm. The shortcomings of the density peak clustering algorithm are sensitive to parameters and poor clustering results on complex manifold data sets. A novel density peak ... ...

    Abstract The density peak clustering algorithm is a density based clustering algorithm. The shortcomings of the density peak clustering algorithm are sensitive to parameters and poor clustering results on complex manifold data sets. A novel density peak clustering algorithm is proposed in this paper, which is based on the natural reverse nearest neighbor structure. First of all, reverse nearest neighbor is introduced to calculate the local density of data objects. Then, the initial cluster centers are selected by combining the representative points and the density. Furthermore, the density adaptive distance is used to calculate the distance between the initial cluster centers, the decision graph is constructed on the initial cluster centers by using the local density calculated based on reverse nearest neighbor and the density adaptive distance, and the final cluster centers are selected according to the decision graph. Finally, the remaining data objects are assigned to the same cluster as their nearest initial cluster centers belong to. The experimental results show that the algorithm has better clustering effect and accuracy compared with the experimental comparison algorithms on the synthetic data sets and UCI real data sets, and it has greater advantages in dealing with complex manifold data sets.
    Keywords natural neighbor ; reverse nearest neighbor ; representative points ; local density ; clustering ; Electronic computers. Computer science ; QA75.5-76.95
    Language Chinese
    Publishing date 2021-10-01T00:00:00Z
    Publisher Journal of Computer Engineering and Applications Beijing Co., Ltd., Science Press
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    Full text online

    More links

    Kategorien

    Inter-library loan at ZB MED

    Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

  5. Article ; Online: American literature news narration based on computer web technology.

    Liu, Juan / Mi, Sha

    PloS one

    2023  Volume 18, Issue 10, Page(s) e0292446

    Abstract: Driven by internet technology, online has become the main way of news dissemination, but redundant information such as navigation bars and advertisements affects people's access to news content. The research aims to enable users to obtain pure news ... ...

    Abstract Driven by internet technology, online has become the main way of news dissemination, but redundant information such as navigation bars and advertisements affects people's access to news content. The research aims to enable users to obtain pure news content from redundant web information. Firstly, based on the narrative characteristics of literary news, the Term Frequency-Inverse Document Frequency (TF-IDF) algorithm is employed to extract pure news content from the analyzed web pages. The algorithm uses keyword matching, text analysis, and semantic processing to determine news content's boundaries and key information. Secondly, the news text classification algorithm (support vector machine, K-nearest neighbor, AdaBoost algorithm) is selected through comparative experiments. The news extraction system based on keyword feature and extended Document Object Model (DOM) tree is constructed. DOM technology analyzes web page structure and extracts key elements and information. Finally, the research can get their narrative characteristics by studying the narrative sequence and structure of 15 American literary news reports. The results reveal that the most used narrative sequence in American literary news is sequence and flashback. The narrative duration is dominated by the victory rate and outline, supplemented by scenes and pauses. In addition, 53.3% of the narrative structures used in literary news are time-connected. This narrative structure can help reporters have a clear conceptual structure when writing, help readers quickly grasp and understand the context of the event and the life course of the protagonists in the report, and increase the report's readability. This research on the narrative characteristics of American literature news can provide media practitioners with a reference on news narrative techniques and strategies.
    MeSH term(s) Humans ; United States ; Narration ; Algorithms ; Internet ; Cluster Analysis ; Computers
    Language English
    Publishing date 2023-10-16
    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.0292446
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

  6. Article ; Online: Glucose metabolism of TAMs in tumor chemoresistance and metastasis.

    Liu, Juan / Cao, Xuetao

    Trends in cell biology

    2023  Volume 33, Issue 11, Page(s) 967–978

    Abstract: Tumor-associated macrophages (TAMs) are critical in promoting tumor progression and therapeutic resistance. In adapting to metabolic changes in the tumor microenvironment (TME), TAMs reprogram their metabolisms and acquire immunosuppressive and pro-tumor ...

    Abstract Tumor-associated macrophages (TAMs) are critical in promoting tumor progression and therapeutic resistance. In adapting to metabolic changes in the tumor microenvironment (TME), TAMs reprogram their metabolisms and acquire immunosuppressive and pro-tumor properties. Increased glucose metabolism in TAMs leads to the accumulation of a variety of oncometabolites that exhibit potent tumor-promoting capacity via regulating gene expression and signaling transduction. Glucose uptake also fuels O-GlcNAcylation and other post-translational modifications to promote pro-tumor polarization and function of TAMs. Glucose metabolism coordinates interactions between TAMs and various types of cells in the TME, creating a complex network that facilitates tumor progression. Targeting glucose metabolism represents a promising strategy to switch TAMs from pro-tumor toward anti-tumor function for cancer therapy.
    Language English
    Publishing date 2023-04-18
    Publishing country England
    Document type Journal Article ; Review
    ZDB-ID 30122-x
    ISSN 1879-3088 ; 0962-8924
    ISSN (online) 1879-3088
    ISSN 0962-8924
    DOI 10.1016/j.tcb.2023.03.008
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

    In stock of ZB MED Cologne/Königswinter

    Zs.MG 25: Show issues
    Zs.MO 113: Show issues
    Zs.A 3410: Show issues Location:
    Je nach Verfügbarkeit (siehe Angabe bei Bestand)
    bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular
    Jg. 1995 - 2021: Lesesall (2.OG)
    ab Jg. 2022: Lesesaal (EG)

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

  7. Article ; Online: A novel dose-adjustment protocol for interrupted subcutaneous immunotherapy for allergic rhinitis.

    Feng, Xian / Liu, Juan

    Immunotherapy

    2023  Volume 15, Issue 14, Page(s) 1171–1181

    Abstract: Background: ...

    Abstract Background:
    MeSH term(s) Animals ; Humans ; Allergens ; Pyroglyphidae ; Prospective Studies ; Rhinitis, Allergic/therapy ; Rhinitis, Allergic/etiology ; Injections, Subcutaneous ; Immunotherapy ; Desensitization, Immunologic/methods ; Sublingual Immunotherapy/methods
    Chemical Substances Allergens
    Language English
    Publishing date 2023-08-10
    Publishing country England
    Document type Controlled Clinical Trial ; Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2495964-9
    ISSN 1750-7448 ; 1750-743X
    ISSN (online) 1750-7448
    ISSN 1750-743X
    DOI 10.2217/imt-2023-0051
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

  8. Article ; Online: RBP-RNA interactions in the control of autoimmunity and autoinflammation.

    Liu, Juan / Cao, Xuetao

    Cell research

    2023  Volume 33, Issue 2, Page(s) 97–115

    Abstract: Autoimmunity and autoinflammation arise from aberrant immunological and inflammatory responses toward self-components, contributing to various autoimmune diseases and autoinflammatory diseases. RNA-binding proteins (RBPs) are essential for immune cell ... ...

    Abstract Autoimmunity and autoinflammation arise from aberrant immunological and inflammatory responses toward self-components, contributing to various autoimmune diseases and autoinflammatory diseases. RNA-binding proteins (RBPs) are essential for immune cell development and function, mainly via exerting post-transcriptional regulation of RNA metabolism and function. Functional dysregulation of RBPs and abnormities in RNA metabolism are closely associated with multiple autoimmune or autoinflammatory disorders. Distinct RBPs play critical roles in aberrant autoreactive inflammatory responses via orchestrating a complex regulatory network consisting of DNAs, RNAs and proteins within immune cells. In-depth characterizations of RBP-RNA interactomes during autoimmunity and autoinflammation will lead to a better understanding of autoimmune pathogenesis and facilitate the development of effective therapeutic strategies. In this review, we summarize and discuss the functions of RBP-RNA interactions in controlling aberrant autoimmune inflammation and their potential as biomarkers and therapeutic targets.
    MeSH term(s) Humans ; Autoimmunity ; RNA ; Autoimmune Diseases ; Gene Expression Regulation ; Inflammation
    Chemical Substances RNA (63231-63-0)
    Language English
    Publishing date 2023-01-05
    Publishing country England
    Document type Journal Article ; Review ; Research Support, Non-U.S. Gov't
    ZDB-ID 1319303-x
    ISSN 1748-7838 ; 1001-0602
    ISSN (online) 1748-7838
    ISSN 1001-0602
    DOI 10.1038/s41422-022-00752-5
    Database MEDical Literature Analysis and Retrieval System OnLINE

    Full text online

    More links

    Kategorien

    In stock of ZB MED Cologne/Königswinter

    Zs.A 5283: Show issues Location:
    Je nach Verfügbarkeit (siehe Angabe bei Bestand)
    bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular
    Jg. 1995 - 2021: Lesesall (2.OG)
    ab Jg. 2022: Lesesaal (EG)

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

  9. Article ; Online: A case of double gallbladder with cholelithiasis diagnosed with transabdominal ultrasound.

    Huang, Xing-Zhi / Liu, Juan

    Journal of medical ultrasonics (2001)

    2023  Volume 50, Issue 2, Page(s) 263–264

    Abstract: Gallbladder duplication is a rare biliary tract malformation. According to Boyden's classification, the double gallbladder is divided into the bilobed gallbladder and truly duplicated gallbladder, including the Y-shaped [cystic ducts uniting before ... ...

    Abstract Gallbladder duplication is a rare biliary tract malformation. According to Boyden's classification, the double gallbladder is divided into the bilobed gallbladder and truly duplicated gallbladder, including the Y-shaped [cystic ducts uniting before entering the common bile duct (CBD)] and H-shaped (cystic ducts separately entering into the CBD) types. The case described here was the Boyden H-shaped type. Preoperative diagnosis of the disease is essential to rationalize surgical planning and avoid complications. Transabdominal ultrasound is the first imaging technique that can diagnose biliary tract abnormality at many institutions. The popularization of typical ultrasound images of the double gallbladder could aid in surgical planning and avoiding complications.
    MeSH term(s) Humans ; Gallbladder/diagnostic imaging ; Gallbladder/surgery ; Cholelithiasis/complications ; Cholelithiasis/diagnostic imaging ; Cholelithiasis/surgery ; Gallbladder Diseases/diagnostic imaging ; Gallbladder Diseases/surgery ; Ultrasonography
    Language English
    Publishing date 2023-02-11
    Publishing country Japan
    Document type Case Reports ; Journal Article
    ZDB-ID 1396630-3
    ISSN 1613-2254 ; 0287-0592 ; 1346-4523
    ISSN (online) 1613-2254
    ISSN 0287-0592 ; 1346-4523
    DOI 10.1007/s10396-023-01287-x
    Database MEDical Literature Analysis and Retrieval System OnLINE

    Full text online

    More links

    Kategorien

    In stock of ZB MED Cologne/Königswinter

    Zs.B 2695: Show issues Location:
    Je nach Verfügbarkeit (siehe Angabe bei Bestand)
    bis Jg. 2021: Bestellungen von Artikeln über das Online-Bestellformular
    ab Jg. 2022: Lesesaal (EG)
    Zs.B 2695 -Engl.Ausg.-: Show issues Location:
    Je nach Verfügbarkeit (siehe Angabe bei Bestand)
    bis Jg. 2021: Bestellungen von Artikeln über das Online-Bestellformular
    ab Jg. 2022: Lesesaal (EG)

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

  10. Article ; Online: Dual-Polarized Metal Vivaldi Array Using Independent Structural Elements.

    Chen, Bo / Wang, Wei / Liu, Juan / Ji, Jianmin

    Sensors (Basel, Switzerland)

    2024  Volume 24, Issue 2

    Abstract: In this letter, a dual-polarized metal Vivaldi phased array antenna composed of independent structural elements is proposed, covering 6-18 GHz. By designing Vivaldi elements with a flexible and complementary structure, arrays of arbitrary shapes and ... ...

    Abstract In this letter, a dual-polarized metal Vivaldi phased array antenna composed of independent structural elements is proposed, covering 6-18 GHz. By designing Vivaldi elements with a flexible and complementary structure, arrays of arbitrary shapes and scales can be constructed. The resonance caused by structural discontinuity is critically studied and eliminated to ensure good performance across the entire band. The antenna elements are fed by 50-Ohm SSMP connectors and manufactured from 2A12 aluminum alloy. An array prototype consisting of 8 × 8 dual-polarized metal has been fabricated and tested with active transmit/receive (T/R) modules to demonstrate the design concept. The array exhibits excellent beam-scanning characteristics in both the E-plane and H-plane, within the scanning range without grating lobes, which shows good agreement with the simulated results. The measured gain results are within the range of 15.2 to 24.8 dBi, and the aperture efficiencies are greater than 91% in the entire operating band. The wideband antenna technology involved in this study can effectively help increase the capacity of communication systems and meets the intentions of the Special Issue.
    Language English
    Publishing date 2024-01-05
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2052857-7
    ISSN 1424-8220 ; 1424-8220
    ISSN (online) 1424-8220
    ISSN 1424-8220
    DOI 10.3390/s24020315
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

To top