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  1. Article ; Online: Experimental and Theoretical Observations of Aromaticity in Heterocyclic XAl(3)(-) (X=Si, Ge, Sn, Pb) Systems The experimental work reported herein was supported by the National Science Foundation (DMR-0095828) and was performed at the W. R. Wiley Environmental Molecular Sciences Laboratory, a national scientific user facility sponsored by the DOE's Office of Biological and Environmental Research and located at the Pacific Northwest National Laboratory, which is operated for DOE by the Battelle Memorial Institute. L.S.W. is an Alfred P. Sloan Foundation Research Fellow. The theoretical work was carried out at the Utah State University and was supported by the donors of The Petroleum Research Fund (ACS-PRF 35255-AC6), administered by the American Chemical Society.

    Li, Xi / Zhang, Hai-Feng / Wang, Lai-Sheng / Kuznetsov, Aleksey E. / Cannon, Nathan A. / Boldyrev, Alexander I.

    Angewandte Chemie (International ed. in English)

    2001  Volume 40, Issue 10, Page(s) 1867–1870

    Language English
    Publishing date 2001-05-18
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 2011836-3
    ISSN 1521-3773 ; 1433-7851
    ISSN (online) 1521-3773
    ISSN 1433-7851
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Cortico-cerebellar coordination facilitates neuroprosthetic control.

    Abbasi, Aamir / Rangwani, Rohit / Bowen, Daniel W / Fealy, Andrew W / Danielsen, Nathan P / Gulati, Tanuj

    Science advances

    2024  Volume 10, Issue 15, Page(s) eadm8246

    Abstract: Temporally coordinated neural activity is central to nervous system function and purposeful behavior. Still, there is a paucity of evidence demonstrating how this coordinated activity within cortical and subcortical regions governs behavior. We ... ...

    Abstract Temporally coordinated neural activity is central to nervous system function and purposeful behavior. Still, there is a paucity of evidence demonstrating how this coordinated activity within cortical and subcortical regions governs behavior. We investigated this between the primary motor (M1) and contralateral cerebellar cortex as rats learned a neuroprosthetic/brain-machine interface (BMI) task. In neuroprosthetic task, actuator movements are causally linked to M1 "direct" neurons that drive the decoder for successful task execution. However, it is unknown how task-related M1 activity interacts with the cerebellum. We observed a notable 3 to 6 hertz coherence that emerged between these regions' local field potentials (LFPs) with learning that also modulated task-related spiking. We identified robust task-related indirect modulation in the cerebellum, which developed a preferential relationship with M1 task-related activity. Inhibiting cerebellar cortical and deep nuclei activity through optogenetics led to performance impairments in M1-driven neuroprosthetic control. Together, these results demonstrate that cerebellar influence is necessary for M1-driven neuroprosthetic control.
    MeSH term(s) Animals ; Rats ; Cerebellum ; Brain-Computer Interfaces ; Cell Nucleus ; Learning ; Movement
    Language English
    Publishing date 2024-04-12
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2810933-8
    ISSN 2375-2548 ; 2375-2548
    ISSN (online) 2375-2548
    ISSN 2375-2548
    DOI 10.1126/sciadv.adm8246
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Hidden Long-Distance Movements by a Migratory Bird.

    Cooper, Nathan W / Marra, Peter P

    Current biology : CB

    2020  Volume 30, Issue 20, Page(s) 4112

    Language English
    Publishing date 2020-11-01
    Publishing country England
    Document type Published Erratum
    ZDB-ID 1071731-6
    ISSN 1879-0445 ; 0960-9822
    ISSN (online) 1879-0445
    ISSN 0960-9822
    DOI 10.1016/j.cub.2020.08.068
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: REVERSE SHOULDER ARTHROPLASTY DESIGN: INLAY VS. ONLAY DOES IT REALLY MAKE A DIFFERENCE?

    Colasanti, Christopher A / Mercer, Nathan P / Contreras, Erik / Simovitch, Ryan W / Zuckerman, Joseph D

    Journal of shoulder and elbow surgery

    2024  

    Abstract: Background: The design of reverse shoulder arthroplasty (RSA) implants has evolved significantly over the past 50 years. Today there are many options available that differ in design of the glenoid and humeral components, fixation methods, sizes and ... ...

    Abstract Background: The design of reverse shoulder arthroplasty (RSA) implants has evolved significantly over the past 50 years. Today there are many options available that differ in design of the glenoid and humeral components, fixation methods, sizes and modularity. With respect to the humeral component the literature has generally focused on the differences between inlay and onlay designs and the potential impact on outcomes. However, inlay and onlay design represents only one factor of many.
    Methods: It is our hypothesis that separating onlay and inlay designs into two distinct entities is an oversimplification as there can be wide overlap of the two designs depending upon surgical technique and the implant selected. As such, the differences between inlay and onlay designs should be measured in absolute terms-meaning combined distalization and lateralization.
    Results: By reviewing the many factors that can contribute to the glenosphere - humerus realtiuonship the role of inlay and onlay humeral designs as an important distinguishing feature is shown to be limited Preliminary studies suggest that the amount of distalization and lateralization of the construct may be the most accurate method of describing the differences in the constructs.
    Conclusions: Inlay and onlay humeral component design represents only one factor of many that may impact outcomes. A more accurate method of defining specific design and technique factors in RSA is the degree of lateralization and distalization.
    Language English
    Publishing date 2024-04-04
    Publishing country United States
    Document type Journal Article ; Review
    ZDB-ID 1170782-3
    ISSN 1532-6500 ; 1058-2746
    ISSN (online) 1532-6500
    ISSN 1058-2746
    DOI 10.1016/j.jse.2024.02.027
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Separation of C18 Fatty Acid Esters and Fatty Acids Derived from Vegetable Oils Using Nanometer-Sized Covalent Organic Frameworks Incorporated in Polyepoxy Membranes.

    Ranasinghe Arachchige, Nimesh P R / Xiong, Nathan W / Bowden, Ned B

    ACS applied nano materials

    2023  Volume 6, Issue 8, Page(s) 6715–6725

    Abstract: Fatty acids (FAs) and FA methyl esters (FAMEs) are easily isolated from vegetable oil and are important starting materials for the chemical industry to produce commercial products that are green, biorenewable, and nontoxic. A challenge in these ... ...

    Abstract Fatty acids (FAs) and FA methyl esters (FAMEs) are easily isolated from vegetable oil and are important starting materials for the chemical industry to produce commercial products that are green, biorenewable, and nontoxic. A challenge in these applications is that mixtures of five or more FAs and FAMEs are isolated from a vegetable oil source, and methods to separate these mixtures are decades old and have increasingly high costs associated with the production of high-purity single-component FAs or FAMEs. We developed a method to separate these mixtures using mixed matrix membranes containing nanometer-sized covalent organic frameworks. The 2D, crystalline COFs possessed narrow distributions of pore sizes of 1.3, 1.8, 2.3, and 3.4 nm that separated FAs and FAMEs based on their degrees of unsaturation. The COFs were synthesized, characterized, and then encapsulated at 10 or 20% by weight into a prepolymer of epoxy that was then fully cured. For all mixed matrix membranes, as the degree of unsaturation increased, the FAs or FAMEs had a slower flux. The largest difference in flux was obtained for a COF/epoxy membrane with a pore size of 1.8 nm, and methyl stearate had a 5.9× faster flux than methyl linolenate. These are the first membranes that can separate the important C18 FAs and FAMEs found in vegetable oil.
    Language English
    Publishing date 2023-04-10
    Publishing country United States
    Document type Journal Article
    ISSN 2574-0970
    ISSN (online) 2574-0970
    DOI 10.1021/acsanm.3c00442
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Hospital Performance in the First 6 Years of Medicare's Value-Based Purchasing Program.

    Carroll, Nathan W / Clement, Jan P

    Medical care research and review : MCRR

    2020  Volume 78, Issue 5, Page(s) 598–606

    Abstract: The Medicare value-based purchasing (VBP) program, ongoing since 2013, uses financial bonuses and penalties to incentivize hospital quality improvements. Previous research has identified characteristics of penalized hospitals, but has not examined ... ...

    Abstract The Medicare value-based purchasing (VBP) program, ongoing since 2013, uses financial bonuses and penalties to incentivize hospital quality improvements. Previous research has identified characteristics of penalized hospitals, but has not examined characteristics of hospitals with improvements in VBP program performance or consistent good performance. We identify five different trajectories of program performance (improvement, decline, consistent good or poor performance, mixed). A total of 11% of hospitals were penalized every year of the program, 24% improved their VBP program performance, 14% of hospitals consistently earned a bonus, while 18% performed well in the program's early years but experienced declines in performance. In 2013, organizational and community characteristics were associated with higher odds of improving relative to performing poorly every year. Few variables under managers' control were associated with program improvement, though accountable care organization participation was in some models. We find changes in VBP program metrics may have contributed to improvement in some hospitals' program scores.
    MeSH term(s) Accountable Care Organizations ; Aged ; Hospitals ; Humans ; Medicare ; Quality Improvement ; United States ; Value-Based Purchasing
    Language English
    Publishing date 2020-06-17
    Publishing country United States
    Document type Journal Article
    ZDB-ID 1232314-7
    ISSN 1552-6801 ; 1077-5587
    ISSN (online) 1552-6801
    ISSN 1077-5587
    DOI 10.1177/1077558720927586
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: MHCpLogics: an interactive machine learning-based tool for unsupervised data visualization and cluster analysis of immunopeptidomes.

    Shahbazy, Mohammad / Ramarathinam, Sri H / Li, Chen / Illing, Patricia T / Faridi, Pouya / Croft, Nathan P / Purcell, Anthony W

    Briefings in bioinformatics

    2024  Volume 25, Issue 2

    Abstract: The major histocompatibility complex (MHC) encodes a range of immune response genes, including the human leukocyte antigens (HLAs) in humans. These molecules bind peptide antigens and present them on the cell surface for T cell recognition. The ... ...

    Abstract The major histocompatibility complex (MHC) encodes a range of immune response genes, including the human leukocyte antigens (HLAs) in humans. These molecules bind peptide antigens and present them on the cell surface for T cell recognition. The repertoires of peptides presented by HLA molecules are termed immunopeptidomes. The highly polymorphic nature of the genres that encode the HLA molecules confers allotype-specific differences in the sequences of bound ligands. Allotype-specific ligand preferences are often defined by peptide-binding motifs. Individuals express up to six classical class I HLA allotypes, which likely present peptides displaying different binding motifs. Such complex datasets make the deconvolution of immunopeptidomic data into allotype-specific contributions and further dissection of binding-specificities challenging. Herein, we developed MHCpLogics as an interactive machine learning-based tool for mining peptide-binding sequence motifs and visualization of immunopeptidome data across complex datasets. We showcase the functionalities of MHCpLogics by analyzing both in-house and published mono- and multi-allelic immunopeptidomics data. The visualization modalities of MHCpLogics allow users to inspect clustered sequences down to individual peptide components and to examine broader sequence patterns within multiple immunopeptidome datasets. MHCpLogics can deconvolute large immunopeptidome datasets enabling the interrogation of clusters for the segregation of allotype-specific peptide sequence motifs, identification of sub-peptidome motifs, and the exportation of clustered peptide sequence lists. The tool facilitates rapid inspection of immunopeptidomes as a resource for the immunology and vaccine communities. MHCpLogics is a standalone application available via an executable installation at: https://github.com/PurcellLab/MHCpLogics.
    MeSH term(s) Humans ; Data Visualization ; Peptides/chemistry ; HLA Antigens/genetics ; Histocompatibility Antigens ; Machine Learning ; Cluster Analysis
    Chemical Substances Peptides ; HLA Antigens ; Histocompatibility Antigens
    Language English
    Publishing date 2024-03-07
    Publishing country England
    Document type Journal Article
    ZDB-ID 2068142-2
    ISSN 1477-4054 ; 1467-5463
    ISSN (online) 1477-4054
    ISSN 1467-5463
    DOI 10.1093/bib/bbae087
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: Call for Papers: "In It for the Long Haul: Understanding the Lasting Impact of COVID-19 on Lung Health and Disease".

    Bartlett, Nathan W / Bastarache, Julie A / Kuebler, Wolfgang M / Schmidt, Eric P

    American journal of physiology. Lung cellular and molecular physiology

    2022  Volume 323, Issue 6, Page(s) L683–L684

    MeSH term(s) Humans ; COVID-19 ; Time Factors ; Lung
    Language English
    Publishing date 2022-11-08
    Publishing country United States
    Document type Editorial
    ZDB-ID 1013184-x
    ISSN 1522-1504 ; 1040-0605
    ISSN (online) 1522-1504
    ISSN 1040-0605
    DOI 10.1152/ajplung.00352.2022
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  9. Article ; Online: Hidden Long-Distance Movements by a Migratory Bird.

    Cooper, Nathan W / Marra, Peter P

    Current biology : CB

    2020  Volume 30, Issue 20, Page(s) 4056–4062.e3

    Abstract: Technology has revolutionized our ability to track animals across the globe, significantly advancing our understanding of animal movement [1, 2]. Technological and logistical challenges, however, have led to non-migratory movements that fall outside of ... ...

    Abstract Technology has revolutionized our ability to track animals across the globe, significantly advancing our understanding of animal movement [1, 2]. Technological and logistical challenges, however, have led to non-migratory movements that fall outside of the territory/home range paradigm, receiving less attention. This may have resulted in a widespread underestimation of the frequency and spatial scale at which animals either move outside of their territories and home ranges or adopt altogether different space-use strategies. We used a breeding-range-wide automated radio-telemetry system to track movements in a migratory songbird, the Kirtland's warbler (Setophaga kirtlandii). By attaching radio tags on the wintering grounds and relocating the same individuals on the breeding grounds, we were able to sample the population without regard to their eventual breeding status or space-use strategy. We found that a surprising proportion of breeders and most non-breeders made long-distance (5-77 km) movements during the breeding season while conspecifics remained within their small territories. Movement frequency peaked during the nestling and fledgling periods, indicating that both breeders and non-breeders were likely prospecting to inform dispersal. A literature review revealed that Kirtland's warblers moved farther than most species in absolute distances and farther than all other species relative to normal daily movements. We argue that similarly long-distance movements likely exist in many other species but have gone undetected because of technological limitations, research biases, and logistical challenges. Underestimation of the scale of these poorly understood life history behaviors has important implications for the ecology, evolution, and conservation of animals. VIDEO ABSTRACT.
    MeSH term(s) Animal Migration/physiology ; Animals ; Geography ; Seasons ; Songbirds/physiology ; Telemetry/methods
    Language English
    Publishing date 2020-08-20
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Research Support, U.S. Gov't, Non-P.H.S.
    ZDB-ID 1071731-6
    ISSN 1879-0445 ; 0960-9822
    ISSN (online) 1879-0445
    ISSN 0960-9822
    DOI 10.1016/j.cub.2020.07.056
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article: Prey availability and foraging activity by tundra-nesting sea ducks: Strong preference for specific wetland types.

    Miller, Micah W C / Lovvorn, James R / Graff, Nathan R / Stellrecht, Neesha C / Plesh, Steven P

    Ecology and evolution

    2023  Volume 13, Issue 9, Page(s) e10375

    Abstract: Wetlands in Arctic tundra support abundant breeding waterbirds. Wetland types differing in area, depth, vegetation, and invertebrate biomass density may vary in importance to birds, and in vulnerability to climate change. We studied availability and use ... ...

    Abstract Wetlands in Arctic tundra support abundant breeding waterbirds. Wetland types differing in area, depth, vegetation, and invertebrate biomass density may vary in importance to birds, and in vulnerability to climate change. We studied availability and use of different wetland types by prelaying females of four species of sea ducks (Mergini) breeding on the Arctic Coastal Plain of Alaska, USA: long-tailed ducks (
    Language English
    Publishing date 2023-09-20
    Publishing country England
    Document type Journal Article
    ZDB-ID 2635675-2
    ISSN 2045-7758
    ISSN 2045-7758
    DOI 10.1002/ece3.10375
    Database MEDical Literature Analysis and Retrieval System OnLINE

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