LIVIVO - The Search Portal for Life Sciences

zur deutschen Oberfläche wechseln
Advanced search

Search results

Result 1 - 10 of total 1809

Search options

  1. Book ; Online: The Southwest in the American Imagination

    Hinsley, Curtis M. / Wilcox, David R.

    The Writings of Sylvester Baxter, 1881-1889

    2022  

    Keywords Literature: history & criticism
    Language 0|e
    Size 1 Online-Ressource
    Publisher University of Arizona Press
    Document type Book ; Online
    Note English ; Open Access
    HBZ-ID HT021616996
    ISBN 9780816548750 ; 0816548757
    Database ZB MED Catalogue: Medicine, Health, Nutrition, Environment, Agriculture

    More links

    Kategorien

  2. Article ; Online: Antibody Staining for Nematodes with Heat-induced Antigen Retrieval (HIAR).

    Loer, Curtis M

    Methods in molecular biology (Clifton, N.J.)

    2022  Volume 2468, Page(s) 133–140

    Abstract: Immunocytochemistry remains a valuable and necessary tool for biologists working with nematodes, even those nematode model organisms with advanced molecular genetic tools and transgenics. Because of the highly idiosyncratic nature of successful ... ...

    Abstract Immunocytochemistry remains a valuable and necessary tool for biologists working with nematodes, even those nematode model organisms with advanced molecular genetic tools and transgenics. Because of the highly idiosyncratic nature of successful immunostaining procedures, innovations can still be found for this long-established technique. Heat-induced antigen retrieval (HIAR) is well known from other systems, but seems not to have been applied to antibody staining in nematodes. For some antigens, adding HIAR to an established antibody staining protocol for nematodes can reveal strong and reliable staining that without HIAR is poor or completely absent.
    MeSH term(s) Animals ; Antibodies ; Antigens ; Hot Temperature ; Nematoda ; Staining and Labeling
    Chemical Substances Antibodies ; Antigens
    Language English
    Publishing date 2022-03-23
    Publishing country United States
    Document type Journal Article
    ISSN 1940-6029
    ISSN (online) 1940-6029
    DOI 10.1007/978-1-0716-2181-3_8
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  3. Article ; Online: Extensor Tendon Repair: Avoidance and Management of Complications.

    Cowley, R Adams / Henn, Curtis M

    Hand clinics

    2023  Volume 39, Issue 3, Page(s) 435–446

    Abstract: Extensor tendon repair can be technically challenging and can lead to suboptimal outcomes and complications even if managed perfectly. This article describes the pertinent clinical anatomy of the extensor mechanism, reviews outcomes and complications ... ...

    Abstract Extensor tendon repair can be technically challenging and can lead to suboptimal outcomes and complications even if managed perfectly. This article describes the pertinent clinical anatomy of the extensor mechanism, reviews outcomes and complications following extensor tendon repair, and provides guidance on how to avoid and manage complications when they occur.
    MeSH term(s) Humans ; Tendon Injuries/surgery ; Tendon Injuries/etiology ; Tendons/surgery ; Plastic Surgery Procedures
    Language English
    Publishing date 2023-05-20
    Publishing country United States
    Document type Journal Article ; Review
    ZDB-ID 1315374-2
    ISSN 1558-1969 ; 0749-0712
    ISSN (online) 1558-1969
    ISSN 0749-0712
    DOI 10.1016/j.hcl.2023.03.004
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  4. Article: Experimental evaluation of cement integrity on exposure to supercritical CO

    Mamoudou, Sidi / Curtis, Mark / Dang, Son / Rai, Chandra

    Heliyon

    2024  Volume 10, Issue 2, Page(s) e24144

    Abstract: Carbon sequestration is one approach to achieve carbon dioxide reduction in the atmosphere. Underground storage of ... ...

    Abstract Carbon sequestration is one approach to achieve carbon dioxide reduction in the atmosphere. Underground storage of CO
    Language English
    Publishing date 2024-01-17
    Publishing country England
    Document type Journal Article
    ZDB-ID 2835763-2
    ISSN 2405-8440
    ISSN 2405-8440
    DOI 10.1016/j.heliyon.2024.e24144
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  5. Article ; Online: Infant mortality in Italy: large geographic and ethnic inequalities.

    Simeoni, Silvia / Frova, Luisa / De Curtis, Mario

    Italian journal of pediatrics

    2024  Volume 50, Issue 1, Page(s) 5

    Abstract: Background: Neonatal and infant mortality rates are among the most significant indicators for assessing a country's healthcare and social development. This study examined the trends in neonatal, post-neonatal, and infant mortality in Italy from 2016 to ... ...

    Abstract Background: Neonatal and infant mortality rates are among the most significant indicators for assessing a country's healthcare and social development. This study examined the trends in neonatal, post-neonatal, and infant mortality in Italy from 2016 to 2020 and analysed differences between children of Italian and foreign parents based on areas of residence, as well as the leading causes of death. Special attention was given to the analysis of mortality in 2020, the first year of the Covid-19 pandemic, and its comparison with previous years.
    Methods: Data from 2016 to 2020 were collected by the Italian National Institute of Statistics and extracted from two national databases, the Causes of Death register and Live births registered in the population register. Neonatal, post-neonatal, and infant mortality rates were calculated using conventional definitions. The main analyses were conducted by comparing Italian citizens to foreigners and contrasting residents of the North with those of the South. Group comparisons were made using mortality rate ratios. The main causes of death were examined, and Poisson log-linear regression models were employed to investigate the relationships between mortality rate ratios for each cause of death and citizenship, place of residence and calendar year.
    Results: In Italy, in 2020, the neonatal mortality rate was 1.76 deaths per thousand live births and it was 55% higher in foreign children than in Italian children. Foreign children had a higher mortality rate than Italians for almost all significant causes of death. Children born in the South of Italy, both Italian and foreign, had an infant mortality rate about 70% higher than residents in the North. Regions with higher infant mortality were Calabria, Sicily, Campania, and Apulia. In the South, mortality from neonatal respiratory distress and prematurity was higher. In the first months of 2020, between March and June, the first Covid-19 wave, Italy experienced an increase in neonatal and infant mortality compared to the same period in 2016-2019, not directly related to SARS-CoV-19 infection. The primary cause was neonatal respiratory distress.
    Conclusions: The neonatal and infant mortality rates indicate the persistence of profound inequalities in Italy between the North and the South and between Italian and foreign children.
    MeSH term(s) Humans ; Infant ; Infant, Newborn ; COVID-19/epidemiology ; European People ; Infant Mortality ; Italy/epidemiology ; Pandemics ; Respiratory Distress Syndrome, Newborn/epidemiology
    Language English
    Publishing date 2024-01-17
    Publishing country England
    Document type Journal Article
    ZDB-ID 2088556-8
    ISSN 1824-7288 ; 1720-8424
    ISSN (online) 1824-7288
    ISSN 1720-8424
    DOI 10.1186/s13052-023-01571-z
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  6. Article ; Online: Optimising default radiographic exposure factors using Deviation Index.

    Creeden, A / Curtis, M

    Radiography (London, England : 1995)

    2020  Volume 26, Issue 4, Page(s) 308–313

    Abstract: Introduction: Radiographers have a duty to ensure that radiation doses to patients are as low as reasonably achievable. With digital technologies, exposure factors which achieve the optimum balance between image noise and patient dose must be sought. In ...

    Abstract Introduction: Radiographers have a duty to ensure that radiation doses to patients are as low as reasonably achievable. With digital technologies, exposure factors which achieve the optimum balance between image noise and patient dose must be sought. In digital radiography, Deviation Index (DI) values provide the radiographer with feedback on the appropriateness of individual exposures but can also be tracked as part of a departmental quality assurance programme.
    Methods: In November 2017, exposure logs were extracted from six digital radiography (DR) x-ray systems, collated and analysed. Five examinations were identified which frequently produced DI values outside the manufacturer's recommended Optimal Range (-3 to +2). Incremental improvements were made to the default exposure settings for these examinations via a cyclical process of modification and re-evaluation. A full data collection exercise was then repeated in April 2019.
    Results: At baseline, 10,658 out of 29,637 (36.0%) exposures had DI values outside the manufacturer's recommended Optimal Range, but for some individual examinations the proportion was as high as 547 out of 725 (74.5%). Following multiple optimisation cycles, the overall proportion of examinations outside the Optimal Range had fallen to 7611 out of 26,759 (28.4%). Default milliampere-seconds (mAs) values for these examinations were reduced by between 22% and 50%.
    Conclusion: A marked reduction in patient doses can be achieved through a departmental programme of DI value monitoring and targeted optimisation of default exposure settings.
    Implications for practice: DI values should be routinely monitored as part of routine quality assurance programmes. Radiographers have a responsibility to ensure that they possess a clear understanding of DI values and that appropriate exposure settings are selected for each individual patient.
    MeSH term(s) Allied Health Personnel ; Humans ; Physical Examination ; Radiation Dosage ; Radiographic Image Enhancement ; Surveys and Questionnaires
    Language English
    Publishing date 2020-03-18
    Publishing country England
    Document type Journal Article
    ZDB-ID 1289102-2
    ISSN 1532-2831 ; 1078-8174
    ISSN (online) 1532-2831
    ISSN 1078-8174
    DOI 10.1016/j.radi.2020.02.009
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  7. Article ; Online: Asymmetric density-dependent competition does not contribute to the maintenance of sex in a mixed population of sexual and asexual Potamopyrgus antipodarum.

    Dinges, Zoe M / Lively, Curtis M

    Journal of evolutionary biology

    2022  Volume 35, Issue 7, Page(s) 1012–1019

    Abstract: Asexual reproduction is expected to have a twofold reproductive advantage over sexual reproduction, owing to the cost of producing males in sexual subpopulations. The persistence of sexual females, thus, requires an advantage to sexual reproduction, at ... ...

    Abstract Asexual reproduction is expected to have a twofold reproductive advantage over sexual reproduction, owing to the cost of producing males in sexual subpopulations. The persistence of sexual females, thus, requires an advantage to sexual reproduction, at least periodically. Here, we tested the hypothesis that asexual females are more sensitive to limited resources. Under this idea, fluctuations in the availability of resources (per capita) could periodically favour sexual females when resources become limited. We combined sexual and asexual freshwater snails (Potamopyrgus antipodarum) together in nylon mesh enclosures at three different densities in an outdoor mesocosm. After 1 month, we counted the brood size of fertile female snails. We found that fecundity declined significantly with increasing density. However, sexual females did not produce more offspring than asexual females at any of the experimental densities. Our results, thus, suggest that the cost of sexual reproduction in P. antipodarum is not ameliorated by periods of intense resource competition.
    MeSH term(s) Animals ; Female ; Fertility ; Male ; Population Dynamics ; Reproduction ; Reproduction, Asexual ; Snails
    Language English
    Publishing date 2022-06-01
    Publishing country Switzerland
    Document type Journal Article ; Research Support, U.S. Gov't, Non-P.H.S.
    ZDB-ID 1465318-7
    ISSN 1420-9101 ; 1010-061X
    ISSN (online) 1420-9101
    ISSN 1010-061X
    DOI 10.1111/jeb.14030
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  8. Article ; Online: Tenapanor (Ibsrela) for the Treatment of Irritable Bowel Syndrome With Constipation.

    Curtis, Seth / Curtis, Megan

    American family physician

    2022  Volume 105, Issue 6, Page(s) 656–658

    MeSH term(s) Constipation/drug therapy ; Gastrointestinal Agents/therapeutic use ; Humans ; Irritable Bowel Syndrome/drug therapy ; Isoquinolines/therapeutic use ; Sulfonamides/therapeutic use
    Chemical Substances Gastrointestinal Agents ; Isoquinolines ; Sulfonamides ; tenapanor (WYD79216A6)
    Language English
    Publishing date 2022-07-12
    Publishing country United States
    Document type Journal Article
    ZDB-ID 412694-4
    ISSN 1532-0650 ; 0002-838X ; 0572-3612
    ISSN (online) 1532-0650
    ISSN 0002-838X ; 0572-3612
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  9. Article: Trans-specific polymorphism and the convergent evolution of supertypes in major histocompatibility complex class II genes in darters (

    Million, Kara M / Lively, Curtis M

    Ecology and evolution

    2022  Volume 12, Issue 1, Page(s) e8485

    Abstract: Major Histocompatibility Complex (MHC) genes are one of the most polymorphic gene groups known in vertebrates. MHC genes also exhibit allelic variants that are shared among taxa, referred to as trans-specific polymorphism (TSP). The role that selection ... ...

    Abstract Major Histocompatibility Complex (MHC) genes are one of the most polymorphic gene groups known in vertebrates. MHC genes also exhibit allelic variants that are shared among taxa, referred to as trans-specific polymorphism (TSP). The role that selection plays in maintaining such high diversity within species, as well as TSP, is an ongoing discussion in biology. In this study, we used deep-sequencing techniques to characterize MHC class IIb gene diversity in three sympatric species of darters. We found at least 5 copies of the MHC gene in darters, with 126 genetic variants encoding 122 unique amino acid sequences. We identified four supertypes based on the binding properties of proteins encoded by the sequences. Although each species had a unique pool of variants, many variants were shared between species pairs and across all three species. Phylogenetic analysis showed that the variants did not group together monophyletically based on species identity or on supertype. An expanded phylogenetic analysis showed that some darter alleles grouped together with alleles from other percid fishes. Our findings show that TSP occurs in darters, which suggests that balancing selection is acting at the genotype level. Supertypes, however, are most likely evolving convergently, as evidenced by the fact that alleles do not form monophyletic groups based on supertype. Our research demonstrates that selection may be acting differently on MHC genes at the genotype and supertype levels, selecting for the maintenance of high genotypic diversity while driving the convergent evolution of similar MHC phenotypes across different species.
    Language English
    Publishing date 2022-01-13
    Publishing country England
    Document type Journal Article
    ZDB-ID 2635675-2
    ISSN 2045-7758
    ISSN 2045-7758
    DOI 10.1002/ece3.8485
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  10. Article: Host-parasite coevolution: Partitioning the effects of natural selection and environmental change using coupled Price equations.

    Lively, Curtis M / Wade, Michael J

    Ecology and evolution

    2022  Volume 12, Issue 8, Page(s) e9136

    Abstract: George Price showed how the effects of natural selection and environmental change could be mathematically partitioned. This partitioning may be especially useful for understanding host-parasite coevolution, where each species represents the environment ... ...

    Abstract George Price showed how the effects of natural selection and environmental change could be mathematically partitioned. This partitioning may be especially useful for understanding host-parasite coevolution, where each species represents the environment for the other species. Here, we use coupled Price equations to study this kind of antagonistic coevolution. We made the common assumption that parasites must genetically match their host's genotype to avoid detection by the host's self/nonself recognition system, but we allowed for the possibility that non-matching parasites have some fitness. Our results show how natural selection on one species results in environmental change for the other species. Numerical iterations of the model show that these environmental changes can periodically exceed the changes in mean fitness due to natural selection, as suggested by R.A. Fisher. Taken together, the results give an algebraic dissection of the eco-evolutionary feedbacks created during host-parasite coevolution.
    Language English
    Publishing date 2022-07-31
    Publishing country England
    Document type Journal Article
    ZDB-ID 2635675-2
    ISSN 2045-7758
    ISSN 2045-7758
    DOI 10.1002/ece3.9136
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

To top