LIVIVO - The Search Portal for Life Sciences

zur deutschen Oberfläche wechseln
Advanced search

Search results

Result 1 - 10 of total 1103

Search options

  1. Article: Work-to-family effects of inclusive leadership: The roles of work-to-family positive spillover and complementary values.

    Zhu, Hong / Chen, Amy Y Y

    Frontiers in psychology

    2022  Volume 13, Page(s) 1004297

    Abstract: Drawing on work-family enrichment theory, we explore whether inclusive leadership leads to employees' work-to-family positive spillover, which further improves their family performance. We also focus on the moderating role of complementary values. A time- ...

    Abstract Drawing on work-family enrichment theory, we explore whether inclusive leadership leads to employees' work-to-family positive spillover, which further improves their family performance. We also focus on the moderating role of complementary values. A time-lagged study was conducted and the sample included 292 employees from two hotels. The results indicate that inclusive leadership triggers employees' work-to-family positive spillover, and then their family performance is enhanced. Moreover, employees' complementary values may strengthen the positive effect of inclusive leadership. We also provide theoretical and practical implications of the results.
    Language English
    Publishing date 2022-11-08
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2563826-9
    ISSN 1664-1078
    ISSN 1664-1078
    DOI 10.3389/fpsyg.2022.1004297
    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.

  2. Article ; Online: Orbital Proptosis and Sinusitis in a Middle-aged Woman.

    Khan, Uzair / Zhu, Amy / Yu, Jeffrey W

    JAMA otolaryngology-- head & neck surgery

    2023  Volume 149, Issue 3, Page(s) 278–279

    MeSH term(s) Middle Aged ; Female ; Humans ; Exophthalmos/etiology ; Sinusitis/complications ; Sinusitis/diagnostic imaging ; Orbital Diseases
    Language English
    Publishing date 2023-01-05
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2701825-8
    ISSN 2168-619X ; 2168-6181
    ISSN (online) 2168-619X
    ISSN 2168-6181
    DOI 10.1001/jamaoto.2022.4366
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

    In stock of ZB MED Cologne/Königswinter

    Ul II Zs.87: 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.

  3. Article ; Online: Bearing Extremes: Impacts from Simulated Outer Space Conditions and Effective Ultraviolet Radiation Shielding Materials on Tardigrade Life History.

    Zhu, Amy / Stone, Johnny

    Health physics

    2022  Volume 123, Issue 3, Page(s) 238–244

    Abstract: Abstract: Questions about astrobiological resilience, whether entities with evolutionary histories on Earth would survive in outer space or on distant planets, for instance, no longer reside exclusively in the science fiction realm. In this study, we ... ...

    Abstract Abstract: Questions about astrobiological resilience, whether entities with evolutionary histories on Earth would survive in outer space or on distant planets, for instance, no longer reside exclusively in the science fiction realm. In this study, we assess life history characteristics for individuals in the tardigrade species Grevenius annulatus post exposure to simulated outer space conditions with nonionizing radiation as a proxy for anticipated oxidative stress and damage incurred from exposure to full-spectrum environmental radiation. Using a planetary environment simulator, we exposed unshielded and shielded specimens to UVB and UVC radiation for 30 min and monitored and recorded subsequent life history characteristics. Survivorship was lower in an unshielded group relative to control as well as Kevlar and polyethylene shielded groups, demonstrating that Kevlar and polyethylene reduce impact from these types of nonionizing radiation, which are not expected to fully penetrate the shields. Cumulative egg production was lowest in the unshielded group, but egg viability and average egg production rate was highest. Due to insignificant differences, additional research to determine the relative effectiveness for Kevlar and polyethylene as shielding materials from survivorship and reproduction perspectives is warranted. This work provides a progressive step from which important conditions excluded in the current study, like vibrations, temperatures, debris-impacts, and ionizing radiation, can be included in future studies.
    MeSH term(s) Earth, Planet ; Extraterrestrial Environment ; Humans ; Polyethylenes ; Radiation Protection ; Ultraviolet Rays/adverse effects
    Chemical Substances Polyethylenes
    Language English
    Publishing date 2022-05-21
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2406-5
    ISSN 1538-5159 ; 0017-9078
    ISSN (online) 1538-5159
    ISSN 0017-9078
    DOI 10.1097/HP.0000000000001585
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

    In stock of ZB MED Cologne/Königswinter

    Zs.A 128: Show issues Location:
    Je nach Verfügbarkeit (siehe Angabe bei Bestand)
    bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular
    Jg. 1995 - 2021: Lesesall (1.OG)
    ab Jg. 2022: Lesesaal (EG)
    Zs.MO 253: Show issues

    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. Book ; Online: Provably Efficient Offline Goal-Conditioned Reinforcement Learning with General Function Approximation and Single-Policy Concentrability

    Zhu, Hanlin / Zhang, Amy

    2023  

    Abstract: Goal-conditioned reinforcement learning (GCRL) refers to learning general-purpose skills that aim to reach diverse goals. In particular, offline GCRL only requires purely pre-collected datasets to perform training tasks without additional interactions ... ...

    Abstract Goal-conditioned reinforcement learning (GCRL) refers to learning general-purpose skills that aim to reach diverse goals. In particular, offline GCRL only requires purely pre-collected datasets to perform training tasks without additional interactions with the environment. Although offline GCRL has become increasingly prevalent and many previous works have demonstrated its empirical success, the theoretical understanding of efficient offline GCRL algorithms is not well established, especially when the state space is huge and the offline dataset only covers the policy we aim to learn. In this paper, we provide a rigorous theoretical analysis of an existing empirically successful offline GCRL algorithm. We prove that under slight modification, this algorithm enjoys an $\widetilde{O}(\text{poly}(1/\epsilon))$ sample complexity (where $\epsilon$ is the desired suboptimality of the learned policy) with general function approximation thanks to the property of (semi-)strong convexity of the objective functions. We only require nearly minimal assumptions on the dataset (single-policy concentrability) and the function class (realizability). Moreover, this algorithm consists of two uninterleaved optimization steps, which we refer to as $V$-learning and policy learning, and is computationally stable since it does not involve minimax optimization. We also empirically validate our theory by showing that the modified algorithm outperforms the previous algorithm in various real-world environments. To the best of our knowledge, this is the first algorithm that is both provably efficient with general function approximation and single-policy concentrability, and empirically successful without requiring solving minimax optimization problems.

    Comment: NeurIPS 2023, 22 pages
    Keywords Computer Science - Machine Learning ; Computer Science - Artificial Intelligence
    Subject code 006
    Publishing date 2023-02-07
    Publishing country us
    Document type Book ; 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: Mechanism of Chalcophanite Nucleation in Zinc Hydroxide Sulfate Cathodes in Aqueous Zinc Batteries.

    Mansley, Zachary R / Zhu, Yimei / Wu, Daren / Takeuchi, Esther S / Marschilok, Amy C / Wang, Lei / Takeuchi, Kenneth J

    Nano letters

    2023  Volume 23, Issue 18, Page(s) 8657–8663

    Abstract: Aqueous Zn-ion batteries with ... ...

    Abstract Aqueous Zn-ion batteries with MnO
    Language English
    Publishing date 2023-09-14
    Publishing country United States
    Document type Journal Article
    ISSN 1530-6992
    ISSN (online) 1530-6992
    DOI 10.1021/acs.nanolett.3c02430
    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.

    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.

  6. Article: Energetic Demands Regulate Sleep-Wake Rhythm Circuit Development.

    Poe, Amy R / Zhu, Lucy / Tang, Si Hao / Valencia, Ella / Kayser, Matthew S

    bioRxiv : the preprint server for biology

    2023  

    Abstract: Sleep and feeding patterns lack a clear daily rhythm during early life. As diurnal animals mature, feeding is consolidated to the day and sleep to the night. Circadian sleep patterns begin with formation of a circuit connecting the central clock to ... ...

    Abstract Sleep and feeding patterns lack a clear daily rhythm during early life. As diurnal animals mature, feeding is consolidated to the day and sleep to the night. Circadian sleep patterns begin with formation of a circuit connecting the central clock to arousal output neurons; emergence of circadian sleep also enables long-term memory (LTM). However, the cues that trigger the development of this clock-arousal circuit are unknown. Here, we identify a role for nutritional status in driving sleep-wake rhythm development in
    Language English
    Publishing date 2023-09-22
    Publishing country United States
    Document type Preprint
    DOI 10.1101/2023.09.19.558472
    Database MEDical Literature Analysis and Retrieval System 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.

  7. Article ; Online: Controls of Mineral Solubility on Adsorption-Induced Molecular Fractionation of Dissolved Organic Matter Revealed by 21 T FT-ICR MS.

    Hu, Zhen / McKenna, Amy M / Wen, Ke / Zhang, Bingjun / Mao, Hairuo / Goual, Lamia / Feng, Xionghan / Zhu, Mengqiang

    Environmental science & technology

    2024  Volume 58, Issue 5, Page(s) 2313–2322

    Abstract: Mineral adsorption-induced molecular fractionation of dissolved organic matter (DOM) affects the composition of both DOM and OM adsorbed and thus stabilized by minerals. However, it remains unclear what mineral properties control the magnitude of DOM ... ...

    Abstract Mineral adsorption-induced molecular fractionation of dissolved organic matter (DOM) affects the composition of both DOM and OM adsorbed and thus stabilized by minerals. However, it remains unclear what mineral properties control the magnitude of DOM fractionation. Using a combined technique approach that leverages the molecular composition identified by ultrahigh resolution 21 T Fourier transform ion cyclotron resonance mass spectrometry and adsorption isotherms, we catalogue the compositional differences that occur at the molecular level that results in fractionation due to adsorption of Suwannee River fulvic acid on aluminum (Al) and iron (Fe) oxides and a phyllosilicate (allophane) species of contrasting properties. The minerals of high solubility (i.e., amorphous Al oxide, boehmite, and allophane) exhibited much stronger DOM fractionation capabilities than the minerals of low solubility (i.e., gibbsite and Fe oxides). Specifically, the former released Al
    MeSH term(s) Dissolved Organic Matter ; Adsorption ; Solubility ; Minerals/chemistry ; Aluminum ; Oxides
    Chemical Substances Dissolved Organic Matter ; Minerals ; Aluminum (CPD4NFA903) ; Oxides
    Language English
    Publishing date 2024-01-24
    Publishing country United States
    Document type Journal Article
    ISSN 1520-5851
    ISSN (online) 1520-5851
    DOI 10.1021/acs.est.3c08123
    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.

    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.

  8. Article ; Online: Tissue-Specific Sex Difference in Mouse Eye and Brain Metabolome Under Fed and Fasted States.

    Saravanan, Meghashri / Xu, Rong / Roby, Olivia / Wang, Yekai / Zhu, Siyan / Lu, Amy / Du, Jianhai

    Investigative ophthalmology & visual science

    2023  Volume 64, Issue 3, Page(s) 18

    Abstract: Purpose: Visual physiology and various ocular diseases demonstrate sexual dimorphisms; however, how sex influences metabolism in different eye tissues remains undetermined. This study aims to address common and tissue-specific sex differences in ... ...

    Abstract Purpose: Visual physiology and various ocular diseases demonstrate sexual dimorphisms; however, how sex influences metabolism in different eye tissues remains undetermined. This study aims to address common and tissue-specific sex differences in metabolism in the retina, RPE, lens, and brain under fed and fasted conditions.
    Methods: After ad libitum fed or being deprived of food for 18 hours, mouse eye tissues (retina, RPE/choroid, and lens), brain, and plasma were harvested for targeted metabolomics. The data were analyzed with both partial least squares-discriminant analysis and volcano plot analysis.
    Results: Among 133 metabolites that cover major metabolic pathways, we found 9 to 45 metabolites that are sex different in different tissues under the fed state and 6 to 18 metabolites under the fasted state. Among these sex-different metabolites, 33 were changed in 2 or more tissues, and 64 were tissue specific. Pantothenic acid, hypotaurine, and 4-hydroxyproline were the top commonly changed metabolites. The lens and the retina had the most tissue-specific, sex-different metabolites enriched in the metabolism of amino acid, nucleotide, lipids, and tricarboxylic acid cycle. The lens and the brain had more similar sex-different metabolites than other ocular tissues. The female RPE and female brain were more sensitive to fasting with more decreased metabolites in amino acid metabolism, tricarboxylic acid cycles, and glycolysis. The plasma had the fewest sex-different metabolites, with very few overlapping changes with tissues.
    Conclusions: Sex has a strong influence on eye and brain metabolism in tissue-specific and metabolic state-specific manners. Our findings may implicate the sexual dimorphisms in eye physiology and susceptibility to ocular diseases.
    MeSH term(s) Mice ; Animals ; Female ; Male ; Sex Characteristics ; Metabolome ; Retina/metabolism ; Metabolomics ; Brain/metabolism ; Fasting ; Amino Acids/metabolism
    Chemical Substances Amino Acids
    Language English
    Publishing date 2023-09-20
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't
    ZDB-ID 391794-0
    ISSN 1552-5783 ; 0146-0404
    ISSN (online) 1552-5783
    ISSN 0146-0404
    DOI 10.1167/iovs.64.3.18
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

    In stock of ZB MED Cologne/Königswinter

    Zs.A 45: Show issues Location:
    Je nach Verfügbarkeit (siehe Angabe bei Bestand)
    bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular
    Jg. 1995 - 2021: Lesesall (1.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: Macromolecular Characterization of Compound Selectivity for Oxidation and Oxidative Alterations of Dissolved Organic Matter by Manganese Oxide.

    Zhang, Jianchao / McKenna, Amy M / Zhu, Mengqiang

    Environmental science & technology

    2021  Volume 55, Issue 11, Page(s) 7741–7751

    Abstract: Manganese (Mn) oxides can oxidize dissolved organic matter (DOM) and alter its chemical properties and microbial degradability, but the compound selectivity for oxidation and oxidative alterations remain to be determined. We applied ultrahigh mass ... ...

    Abstract Manganese (Mn) oxides can oxidize dissolved organic matter (DOM) and alter its chemical properties and microbial degradability, but the compound selectivity for oxidation and oxidative alterations remain to be determined. We applied ultrahigh mass spectrometry to catalog the macromolecular composition of Suwannee River fulvic acid (SRFA) before and after oxidation by a Mn oxide (δ-MnO
    MeSH term(s) Manganese Compounds ; Oxidation-Reduction ; Oxidative Stress ; Oxides
    Chemical Substances Manganese Compounds ; Oxides ; manganese oxide (64J2OA7MH3)
    Language English
    Publishing date 2021-05-11
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Research Support, U.S. Gov't, Non-P.H.S.
    ISSN 1520-5851
    ISSN (online) 1520-5851
    DOI 10.1021/acs.est.1c01283
    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.

    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.

  10. Article ; Online: Current insights into cow's milk allergy in children: Microbiome, metabolome, and immune response-A systematic review.

    Savova, Mariyana V / Zhu, Pingping / Harms, Amy C / van der Molen, Renate G / Belzer, Clara / Hendrickx, Diana M

    Pediatric allergy and immunology : official publication of the European Society of Pediatric Allergy and Immunology

    2024  Volume 35, Issue 2, Page(s) e14084

    Abstract: The increasing prevalence of IgE-mediated cow's milk allergy (CMA) in childhood is a worldwide health concern. There is a growing awareness that the gut microbiome (GM) might play an important role in CMA development. Therefore, treatment with probiotics ...

    Abstract The increasing prevalence of IgE-mediated cow's milk allergy (CMA) in childhood is a worldwide health concern. There is a growing awareness that the gut microbiome (GM) might play an important role in CMA development. Therefore, treatment with probiotics and prebiotics has gained popularity. This systematic review provides an overview of the alterations of the GM, metabolome, and immune response in CMA children and animal models, including post-treatment modifications. MEDLINE, PubMed, Scopus, and Web of Science were searched for studies on GM in CMA-diagnosed children, published before 1 March 2023. A total of 21 articles (13 on children and 8 on animal models) were included. The studies suggest that the GM, characterized by an enrichment of the Clostridia class and reductions in the Lactobacillales order and Bifidobacterium genus, is associated with CMA in early life. Additionally, reduced levels of short-chain fatty acids (SCFAs) and altered amino acid metabolism were reported in CMA children. Commonly used probiotic strains belong to the Bifidobacterium and Lactobacillus genera. However, only Bifidobacterium levels were consistently upregulated after the intervention, while alterations of other bacteria taxa remain inconclusive. These interventions appear to contribute to the restoration of SCFAs and amino acid metabolism balance. Mouse models indicate that these interventions tend to restore the T
    MeSH term(s) Child ; Animals ; Cattle ; Female ; Mice ; Humans ; Infant ; Milk Hypersensitivity ; Gastrointestinal Microbiome ; Immunity ; Metabolome ; Amino Acids
    Chemical Substances Amino Acids
    Language English
    Publishing date 2024-02-16
    Publishing country England
    Document type Systematic Review ; Journal Article ; Review
    ZDB-ID 1057059-7
    ISSN 1399-3038 ; 0905-6157 ; 0906-5784
    ISSN (online) 1399-3038
    ISSN 0905-6157 ; 0906-5784
    DOI 10.1111/pai.14084
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

    In stock of ZB MED Cologne/Königswinter

    Zs.A 3096: 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.

To top