LIVIVO - The Search Portal for Life Sciences

zur deutschen Oberfläche wechseln
Advanced search

Search results

Result 1 - 10 of total 765

Search options

  1. Article ; Online: Reply.

    Yang, Lin / Mei, Hongfang / Lu, Yulan / Zhou, Wenhao

    The Journal of pediatrics

    2022  Volume 245, Page(s) 252–253

    Language English
    Publishing date 2022-03-26
    Publishing country United States
    Document type Letter ; Comment
    ZDB-ID 3102-1
    ISSN 1097-6833 ; 0022-3476
    ISSN (online) 1097-6833
    ISSN 0022-3476
    DOI 10.1016/j.jpeds.2022.03.035
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  2. Article ; Online: A qualitative study on the caregiver burden experience in home reflux enema management of infants with congenital megacolon

    Yuanyuan Fang / Yulan Kang / Lingjing Teng / Lifang Lin / Pingping Qiu

    International Journal of Qualitative Studies on Health & Well-Being, Vol 19, Iss

    2024  Volume 1

    Abstract: Objective This study aims to explore the caregiver burden experience in the care of infants with congenital megacolon undergoing home reflux enema. The findings will provide a basis for developing targeted and effective nursing interventions. Methods A ... ...

    Abstract Objective This study aims to explore the caregiver burden experience in the care of infants with congenital megacolon undergoing home reflux enema. The findings will provide a basis for developing targeted and effective nursing interventions. Methods A phenomenological research approach was employed. From October 2022 to January 2023, semi-structured in-depth interviews were conducted with 12 caregivers of infants with congenital megacolon undergoing home reflux enema in a tertiary paediatric hospital in Fujian Province. The collected data were analysed and organized using the Colaizzi’s 7-step analysis method, leading to the identification of key themes. Results The analysis yielded three major themes concerning the caregiver burden experience in the care of infants with congenital megacolon undergoing home reflux enema: inadequate disease-related knowledge, presence of multiple pressures during the caregiving process, and a desire for greater support. Conclusions This study employed qualitative interviews with the caregivers of 12 children with congenital Hirschsprung’s disease undergoing home reflux enema, and the feelings of caregivers of children with reflux enema at home after discharge were deeply understood. It is recommended to implement positive psychological interventions based on the PERMA model and incorporate “Internet + collaborative nursing” to provide caregivers with professional knowledge, address their pressures and needs, and promote their well-being while enhancing nursing abilities.
    Keywords hirschsprung’s disease ; reflux enema ; home care ; burden experience ; children and infants ; Medicine (General) ; R5-920
    Subject code 360
    Language English
    Publishing date 2024-12-01T00:00:00Z
    Publisher Taylor & Francis Group
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    More links

    Kategorien

  3. Article ; Online: Novel polyhedral@SiO2 core–shell catalysts designed for Fischer–Tropsch synthesis

    Zhang, Yulan / Lin, Xizhu

    Journal of Chemical Technology & Biotechnology. 2023 Mar., v. 98, no. 3 p.661-668

    2023  

    Abstract: BACKGROUND: Fischer–Tropsch synthesis (FTS) has attracted much attention for converting syngas to liquid fuels. Enhanced catalytic stability and excellent product selectivity can be achieved by rational design of catalysts. However, the traditional SiO₂‐ ... ...

    Abstract BACKGROUND: Fischer–Tropsch synthesis (FTS) has attracted much attention for converting syngas to liquid fuels. Enhanced catalytic stability and excellent product selectivity can be achieved by rational design of catalysts. However, the traditional SiO₂‐supported Fe‐based catalysts display higher interaction between active metal and SiO₂ support, thus resulting in a lower catalytic activity. Rational design of catalysts with weaker Fe–Si interaction promises excellent catalytic performances. RESULTS: Novel polyhedral@SiO₂ core–shell catalysts with adjustable shell thickness were prepared. The incorporation of SiO₂ shell with suitable thickness can maintain the integrity of the active structure, and thus promising excellent C₅₊ productivity combined with higher catalytic activity. On the other hand, the SiO₂ layer can prolong the residence time of CₙHₘ intermediates on the active surface of Fe particles that enhance the C–C coupling reaction, favoring chain growth for production of C₅₊ yield. However, excessive addition of tetraethyl orthosilicate cannot increase the shell thickness in the absence of ammonium hydroxide and can be responsible for a poor CO conversion. Si‐66 with shell thickness of 66 nm achieves an optimum C₅₊ yield of 2.23 × 10⁻³ gHC gFₑ⁻¹ s⁻¹ and a higher iron time yield value of 31.5 μmolCO gFₑ⁻¹ s⁻¹. Obviously, this C₅₊ yield is comparable to that for the Mn‐promoted FeSiMn catalyst (2.22 × 10⁻³ gHC gFₑ⁻¹ s⁻¹) reported in our previous work. CONCLUSIONS: The introduction of SiO₂ as shell can improve structural stability during FTS. Moreover, the novel polyhedral@SiO₂ core–shell catalyst exhibits excellent C₅₊ yield, and which is 1.8 times higher than that for a spindle@SiO₂ core–shell catalyst reported in our previous work. © 2022 Society of Chemical Industry (SCI).
    Keywords Fischer-Tropsch reaction ; ammonium hydroxide ; biotechnology ; catalysts ; catalytic activity ; liquids ; synthesis gas
    Language English
    Dates of publication 2023-03
    Size p. 661-668.
    Publishing place John Wiley & Sons, Ltd.
    Document type Article ; Online
    Note JOURNAL ARTICLE
    ZDB-ID 1479465-2
    ISSN 1097-4660 ; 0268-2575
    ISSN (online) 1097-4660
    ISSN 0268-2575
    DOI 10.1002/jctb.7272
    Database NAL-Catalogue (AGRICOLA)

    More links

    Kategorien

  4. Article ; Online: Exosomes derived from programmed cell death: mechanism and biological significance.

    Xiong, Min / Chen, Zhen / Tian, Jiaqi / Peng, Yanjie / Song, Dandan / Zhang, Lin / Jin, Yulan

    Cell communication and signaling : CCS

    2024  Volume 22, Issue 1, Page(s) 156

    Abstract: Exosomes are nanoscale extracellular vesicles present in bodily fluids that mediate intercellular communication by transferring bioactive molecules, thereby regulating a range of physiological and pathological processes. Exosomes can be secreted from ... ...

    Abstract Exosomes are nanoscale extracellular vesicles present in bodily fluids that mediate intercellular communication by transferring bioactive molecules, thereby regulating a range of physiological and pathological processes. Exosomes can be secreted from nearly all cell types, and the biological function of exosomes is heterogeneous and depends on the donor cell type and state. Recent research has revealed that the levels of exosomes released from the endosomal system increase in cells undergoing programmed cell death. These exosomes play crucial roles in diseases, such as inflammation, tumors, and autoimmune diseases. However, there is currently a lack of systematic research on the differences in the biogenesis, secretion mechanisms, and composition of exosomes under different programmed cell death modalities. This review underscores the potential of exosomes as vital mediators of programmed cell death processes, highlighting the interconnection between exosome biosynthesis and the regulatory mechanisms governing cell death processes. Furthermore, we accentuate the prospect of leveraging exosomes for the development of innovative biomarkers and therapeutic strategies across various diseases.
    MeSH term(s) Exosomes/metabolism ; Extracellular Vesicles/metabolism ; Cell Communication ; Biomarkers/metabolism ; Apoptosis
    Chemical Substances Biomarkers
    Language English
    Publishing date 2024-03-01
    Publishing country England
    Document type Journal Article ; Review ; Research Support, Non-U.S. Gov't
    ZDB-ID 2126315-2
    ISSN 1478-811X ; 1478-811X
    ISSN (online) 1478-811X
    ISSN 1478-811X
    DOI 10.1186/s12964-024-01521-0
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  5. Article ; Online: In vitro regeneration of triploid from mature endosperm culture of Passiflora edulis "Mantianxing".

    Tang, Junrong / Luo, Xi / Zhu, Yajing / Cai, Nianhui / Chen, Lin / Chen, Shi / Xu, Yulan

    Bioscience, biotechnology, and biochemistry

    2024  Volume 88, Issue 4, Page(s) 412–419

    Abstract: The regeneration of shoots from endosperm tissue is a highly effective method to obtain triploid plants. In this study, we elucidated the establishment of an in vitro regeneration system from endosperm culture for the production of Passiflora edulis " ... ...

    Abstract The regeneration of shoots from endosperm tissue is a highly effective method to obtain triploid plants. In this study, we elucidated the establishment of an in vitro regeneration system from endosperm culture for the production of Passiflora edulis "Mantianxing." The highest callus induction rate (83.33%) was obtained on the media supplemented with 1.0 mg/L TDZ. Meanwhile, the MS medium containing 1.0 mg/L 6-BA and 0.4 mg/L IBA gave the optimum 75% shoot bud induction. Chromosome analysis revealed that the chromosomal count of P. edulis "Mantianxing" regenerated from endosperm tissues was 27 (2n = 3x = 27), which indicated that shoots regenerated from endosperm tissues were triploids. Triploid P. edulis had more drought resistance than diploid plants. Our study provided a method for breeding of passion fruit by means of a stable and reproducible regeneration system from endosperm culture, leading to the generation of triploid plants.
    MeSH term(s) Plant Shoots ; Triploidy ; Passiflora ; Endosperm ; Plant Breeding ; Regeneration/genetics
    Language English
    Publishing date 2024-02-27
    Publishing country England
    Document type Journal Article
    ZDB-ID 1106450-x
    ISSN 1347-6947 ; 0916-8451
    ISSN (online) 1347-6947
    ISSN 0916-8451
    DOI 10.1093/bbb/zbae009
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  6. Article ; Online: Fine-Grained Radio Frequency Fingerprint Recognition Network Based on Attention Mechanism.

    Zhang, Yulan / Hu, Jun / Jiang, Rundong / Lin, Zengrong / Chen, Zengping

    Entropy (Basel, Switzerland)

    2023  Volume 26, Issue 1

    Abstract: With the rapid development of the internet of things (IoT), hundreds of millions of IoT devices, such as smart home appliances, intelligent-connected vehicles, and wearable devices, have been connected to the network. The open nature of IoT makes it ... ...

    Abstract With the rapid development of the internet of things (IoT), hundreds of millions of IoT devices, such as smart home appliances, intelligent-connected vehicles, and wearable devices, have been connected to the network. The open nature of IoT makes it vulnerable to cybersecurity threats. Traditional cryptography-based encryption methods are not suitable for IoT due to their complexity and high communication overhead requirements. By contrast, RF-fingerprint-based recognition is promising because it is rooted in the inherent non-reproducible hardware defects of the transmitter. However, it still faces the challenges of low inter-class variation and large intra-class variation among RF fingerprints. Inspired by fine-grained recognition in computer vision, we propose a fine-grained RF fingerprint recognition network (FGRFNet) in this article. The network consists of a top-down feature pathway hierarchy to generate pyramidal features, attention modules to locate discriminative regions, and a fusion module to adaptively integrate features from different scales. Experiments demonstrate that the proposed FGRFNet achieves recognition accuracies of 89.8% on 100 ADS-B devices, 99.5% on 54 Zigbee devices, and 83.0% on 25 LoRa devices.
    Language English
    Publishing date 2023-12-27
    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/e26010029
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  7. Book ; Online: Variational Probabilistic Fusion Network for RGB-T Semantic Segmentation

    Lin, Baihong / Lin, Zengrong / Guo, Yulan / Zhang, Yulan / Zou, Jianxiao / Fan, Shicai

    2023  

    Abstract: RGB-T semantic segmentation has been widely adopted to handle hard scenes with poor lighting conditions by fusing different modality features of RGB and thermal images. Existing methods try to find an optimal fusion feature for segmentation, resulting in ...

    Abstract RGB-T semantic segmentation has been widely adopted to handle hard scenes with poor lighting conditions by fusing different modality features of RGB and thermal images. Existing methods try to find an optimal fusion feature for segmentation, resulting in sensitivity to modality noise, class-imbalance, and modality bias. To overcome the problems, this paper proposes a novel Variational Probabilistic Fusion Network (VPFNet), which regards fusion features as random variables and obtains robust segmentation by averaging segmentation results under multiple samples of fusion features. The random samples generation of fusion features in VPFNet is realized by a novel Variational Feature Fusion Module (VFFM) designed based on variation attention. To further avoid class-imbalance and modality bias, we employ the weighted cross-entropy loss and introduce prior information of illumination and category to control the proposed VFFM. Experimental results on MFNet and PST900 datasets demonstrate that the proposed VPFNet can achieve state-of-the-art segmentation performance.
    Keywords Computer Science - Computer Vision and Pattern Recognition
    Subject code 004
    Publishing date 2023-07-17
    Publishing country us
    Document type Book ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    More links

    Kategorien

  8. Article ; Online: Understanding patient reviews with minimum supervision.

    Gui, Lin / He, Yulan

    Artificial intelligence in medicine

    2021  Volume 120, Page(s) 102160

    Abstract: Understanding patient opinions expressed towards healthcare services in online platforms could allow healthcare professionals to respond to address patients' concerns in a timely manner. Extracting patient opinion towards various aspects of health ... ...

    Abstract Understanding patient opinions expressed towards healthcare services in online platforms could allow healthcare professionals to respond to address patients' concerns in a timely manner. Extracting patient opinion towards various aspects of health services is closely related to aspect-based sentiment analysis (ABSA) in which we need to identify both opinion targets and target-specific opinion expressions. The lack of aspect-level annotations however makes it difficult to build such an ABSA system. This paper proposes a joint learning framework for simultaneous unsupervised aspect extraction at the sentence level and supervised sentiment classification at the document level. It achieves 98.2% sentiment classification accuracy when tested on the reviews about healthcare services collected from Yelp, outperforming several strong baselines. Moreover, our model can extract coherent aspects and can automatically infer the distribution of aspects under different polarities without requiring aspect-level annotations for model learning.
    MeSH term(s) Humans ; Language ; Learning
    Language English
    Publishing date 2021-09-01
    Publishing country Netherlands
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 645179-2
    ISSN 1873-2860 ; 0933-3657
    ISSN (online) 1873-2860
    ISSN 0933-3657
    DOI 10.1016/j.artmed.2021.102160
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  9. Article ; Online: Patient- and caregiver-related factors affecting family caregiver burden of urologic cancer patients.

    Wong, Li Ping / Xu, Xiaonan / Alias, Haridah / Ting, Chuo Yew / Tan, Hui Meng / Lin, Yulan

    Urologic oncology

    2024  

    Abstract: Objective: This study aimed to investigate the level of family caregivers' (FC) burden and the extent to which patient- and caregiver-related factors influence the caregiving burden among FCs of urologic cancer (UC) patients.: Method: A cross- ... ...

    Abstract Objective: This study aimed to investigate the level of family caregivers' (FC) burden and the extent to which patient- and caregiver-related factors influence the caregiving burden among FCs of urologic cancer (UC) patients.
    Method: A cross-sectional survey was conducted on caregivers of UC patients who sought cancer care. The modified caregiver strain index (MCSI) was used to assess FC burden.
    Results: Just over half (54.3%) of FCs had moderate/high MCSI scores (score 9-26). By demographics, FCs who were unemployed (OR = 5.55, 95%CI 1.50-20.60) and perceived their current health condition as moderate/poor (OR = 6.05, 95%CI 1.95-18.78) reported higher odds of increased FC burden. Patient performance status played a pivotal role in exacerbating FC burden, whereby the odds of higher FC burden was 13 times higher in caregivers of UC patients having an Eastern Cooperative Oncology Group (ECOG) performance rating score of 3-4 (OR = 13.06, 95%CI 1.44-111.26) than those with a score of 0. Perceived lower levels of confidence in care provision were significantly associated with a higher level of strain (OR = 6.76, 985%CI 1.02-44.90).
    Conclusion: Care recipient performance status was a strong patient-related factor associated with higher FC burden regardless of duration of caregiving and other caregiver-related factors after adjusting for caregiver demographics.
    Language English
    Publishing date 2024-04-25
    Publishing country United States
    Document type Journal Article
    ZDB-ID 1336505-8
    ISSN 1873-2496 ; 1078-1439
    ISSN (online) 1873-2496
    ISSN 1078-1439
    DOI 10.1016/j.urolonc.2024.04.004
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  10. Article ; Online: A qualitative study on the caregiver burden experience in home reflux enema management of infants with congenital megacolon.

    Fang, Yuanyuan / Kang, Yulan / Teng, Lingjing / Lin, Lifang / Qiu, Pingping

    International journal of qualitative studies on health and well-being

    2023  Volume 19, Issue 1, Page(s) 2289225

    Abstract: Objective: This study aims to explore the caregiver burden experience in the care of infants with congenital megacolon undergoing home reflux enema. The findings will provide a basis for developing targeted and effective nursing interventions.: ... ...

    Abstract Objective: This study aims to explore the caregiver burden experience in the care of infants with congenital megacolon undergoing home reflux enema. The findings will provide a basis for developing targeted and effective nursing interventions.
    Methods: A phenomenological research approach was employed. From October 2022 to January 2023, semi-structured in-depth interviews were conducted with 12 caregivers of infants with congenital megacolon undergoing home reflux enema in a tertiary paediatric hospital in Fujian Province. The collected data were analysed and organized using the Colaizzi's 7-step analysis method, leading to the identification of key themes.
    Results: The analysis yielded three major themes concerning the caregiver burden experience in the care of infants with congenital megacolon undergoing home reflux enema: inadequate disease-related knowledge, presence of multiple pressures during the caregiving process, and a desire for greater support.
    Conclusions: This study employed qualitative interviews with the caregivers of 12 children with congenital Hirschsprung's disease undergoing home reflux enema, and the feelings of caregivers of children with reflux enema at home after discharge were deeply understood. It is recommended to implement positive psychological interventions based on the PERMA model and incorporate "Internet + collaborative nursing" to provide caregivers with professional knowledge, address their pressures and needs, and promote their well-being while enhancing nursing abilities.
    MeSH term(s) Infant ; Humans ; Child ; Hirschsprung Disease ; Caregiver Burden ; Enema ; Caregivers/psychology ; Emotions ; Qualitative Research
    Language English
    Publishing date 2023-12-06
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2232726-5
    ISSN 1748-2631 ; 1748-2623
    ISSN (online) 1748-2631
    ISSN 1748-2623
    DOI 10.1080/17482631.2023.2289225
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

To top