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  1. Article ; Online: Prevalence and disease burden of gastroparesis in Asia.

    Hsu, Ching-Tung / Azzopardi, Neville / Broad, John

    Journal of gastroenterology and hepatology

    2024  Volume 39, Issue 4, Page(s) 649–657

    Abstract: Gastroparesis is a gastrointestinal disorder characterized by significant prolongation of gastric emptying time caused by impaired motility of the stomach. Its estimated prevalence is 24.2 per 100 000 people. However, the prevalence of gastroparesis in ... ...

    Abstract Gastroparesis is a gastrointestinal disorder characterized by significant prolongation of gastric emptying time caused by impaired motility of the stomach. Its estimated prevalence is 24.2 per 100 000 people. However, the prevalence of gastroparesis in Asian countries is unknown due to a limited number of epidemiological studies and significant phenotypic variability of the Asian population in these studies. Analysis of previous research on gastroparesis and functional bowel disorders reveals the possibility of an increased prevalence among Asian individuals. A comparison of ethnic constituents between the recent United Kingdom gastroparesis study and its mother database has demonstrated a higher prevalence of gastroparesis among British Asian patients when compared with British Caucasian patients. An estimated gastroparesis prevalence in the Asian population can be calculated by identifying the individuals who are likely to demonstrate a delayed gastric emptying from all diagnosed functional dyspepsia patients. We suggest that gastroparesis tends to be underdiagnosed in Asians due to a lack of studies on gastroparesis in the Asian continent, a lack of knowledge among practitioners, and poor availability of scintigraphy testing as well as limited therapeutic options for this disease. Given the high probability of Asian predominance in gastroparesis and its disease impact on quality of life, epidemiological research focusing on the Asian population is required.
    MeSH term(s) Humans ; Gastroparesis/epidemiology ; Gastroparesis/etiology ; Quality of Life ; Prevalence ; Cost of Illness ; Asia/epidemiology ; Gastric Emptying
    Language English
    Publishing date 2024-01-15
    Publishing country Australia
    Document type Journal Article ; Review
    ZDB-ID 632882-9
    ISSN 1440-1746 ; 0815-9319
    ISSN (online) 1440-1746
    ISSN 0815-9319
    DOI 10.1111/jgh.16474
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Cologne/Königswinter

    Zs.A 2180: Show issues Location:
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    Jg. 1995 - 2021: Lesesall (1.OG)
    ab Jg. 2022: Lesesaal (EG)
    Zs.MO 299: Show issues

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  2. Article ; Online: J-Matrix time propagation of atomic hydrogen in attosecond fields.

    Gersbacher, Rolf / Broad, John T

    Scientific reports

    2022  Volume 12, Issue 1, Page(s) 11155

    Abstract: The J-Matrix approach for scattering is extended to the time-dependent Schrödinger equation (TDSE) for one electron atoms in external few cycle attosecond fields. To this purpose, the wave function is expanded in square integrable ([Formula: see text]) ... ...

    Abstract The J-Matrix approach for scattering is extended to the time-dependent Schrödinger equation (TDSE) for one electron atoms in external few cycle attosecond fields. To this purpose, the wave function is expanded in square integrable ([Formula: see text]) Sturmian functions and an equation system for the transition amplitudes is established. Outside the interaction zone, boundary conditions are imposed at the border in the [Formula: see text] function space. These boundary conditions correspond to outgoing waves (Siegert states) and minimize reflections at the [Formula: see text] boundary grid. Outgoing wave behaviour in the asymptotic region is achieved by employing Pollaczek functions. The method enables the treatment of light - atom interactions within arbitrary external fields. Using a partial wave decomposition, the coupled differential equation system is solved by a Runge-Kutta method. As a proof of the method ionization processes of atomic hydrogen in half and few cycle attosecond fields are examined. The electron energy spectrum is calculated and the numerical implementation will be presented. Different forms of the interaction operator are considered and the convergence behaviour is discussed. Results are compared to other studies which use independent approaches like finite difference methods. Remarkable agreement is achieved even with strong field strengths of the electromagnetic field. It is demonstrated that expanding in [Formula: see text] functions and imposing boundary conditions at the limit in the [Formula: see text] function space can be an advantageous alternative to conventional propagation methods using complex absorbing potentials or complex scaling.
    Language English
    Publishing date 2022-07-01
    Publishing country England
    Document type Journal Article
    ZDB-ID 2615211-3
    ISSN 2045-2322 ; 2045-2322
    ISSN (online) 2045-2322
    ISSN 2045-2322
    DOI 10.1038/s41598-022-14706-9
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Book: Wealth and poverty in European rural societies from the sixteenth to nineteenth century

    Broad, John / Schuurman, Anton

    (Rural history in Europe ; 10)

    2014  

    Author's details ed. by John Broad and Anton Schuurman
    Series title Rural history in Europe ; 10
    Collection
    Keywords Agriculture and state ; Europe
    Subject code 338.1094
    Language English
    Size 253 S. : Ill., graph. Darst., Kt.
    Publisher Brepols
    Publishing place Turnhout
    Publishing country Belgium
    Document type Book
    HBZ-ID HT018451829
    ISBN 978-2-503-54516-5 ; 2-503-54516-5
    Database Catalogue ZB MED Nutrition, Environment, Agriculture

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    In stock of ZB MED Bonn / Germany

    Shelf markLoan statusLocation
    158/477 available for loan (reading room) Freihandmagazin (U1)

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  4. Article ; Online: The quantum-mechanical Coulomb propagator in an L

    Gersbacher, Rolf / Broad, John T

    Scientific reports

    2021  Volume 11, Issue 1, Page(s) 18997

    Abstract: The quantum-mechanical Coulomb propagator is represented in a square-integrable basis of Sturmian functions. Herein, the Stieltjes integral containing the Coulomb spectral function as a weight is evaluated. The Coulomb propagator generally consists of ... ...

    Abstract The quantum-mechanical Coulomb propagator is represented in a square-integrable basis of Sturmian functions. Herein, the Stieltjes integral containing the Coulomb spectral function as a weight is evaluated. The Coulomb propagator generally consists of two parts. The sum of the discrete part of the spectrum is extrapolated numerically, while three integration procedures are applied to the continuum part of the oscillating integral: the Gauss-Pollaczek quadrature, the Gauss-Legendre quadrature along the real axis, and a transformation into a contour integral in the complex plane with the subsequent Gauss-Legendre quadrature. Using the contour integral, the Coulomb propagator can be calculated very accurately from an L[Formula: see text] basis. Using the three-term recursion relation of the Pollaczek polynomials, an effective algorithm is herein presented to reduce the number of integrations. Numerical results are presented and discussed for all procedures.
    Language English
    Publishing date 2021-09-23
    Publishing country England
    Document type Journal Article
    ZDB-ID 2615211-3
    ISSN 2045-2322 ; 2045-2322
    ISSN (online) 2045-2322
    ISSN 2045-2322
    DOI 10.1038/s41598-021-96925-0
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: The quantum-mechanical Coulomb propagator in an L2 function representation

    Rolf Gersbacher / John T. Broad

    Scientific Reports, Vol 11, Iss 1, Pp 1-

    2021  Volume 16

    Abstract: Abstract The quantum-mechanical Coulomb propagator is represented in a square-integrable basis of Sturmian functions. Herein, the Stieltjes integral containing the Coulomb spectral function as a weight is evaluated. The Coulomb propagator generally ... ...

    Abstract Abstract The quantum-mechanical Coulomb propagator is represented in a square-integrable basis of Sturmian functions. Herein, the Stieltjes integral containing the Coulomb spectral function as a weight is evaluated. The Coulomb propagator generally consists of two parts. The sum of the discrete part of the spectrum is extrapolated numerically, while three integration procedures are applied to the continuum part of the oscillating integral: the Gauss–Pollaczek quadrature, the Gauss–Legendre quadrature along the real axis, and a transformation into a contour integral in the complex plane with the subsequent Gauss–Legendre quadrature. Using the contour integral, the Coulomb propagator can be calculated very accurately from an L $$^2$$ 2 basis. Using the three-term recursion relation of the Pollaczek polynomials, an effective algorithm is herein presented to reduce the number of integrations. Numerical results are presented and discussed for all procedures.
    Keywords Medicine ; R ; Science ; Q
    Subject code 539
    Language English
    Publishing date 2021-09-01T00:00:00Z
    Publisher Nature Portfolio
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  6. Article ; Online: A comparison of virtual reality anatomy models to prosections in station-based anatomy teaching.

    Ail, Geetika / Freer, Frances / Chan, Chui Shan / Jones, Melissa / Broad, John / Canale, Gian Paulo / Elston, Pedro / Leeney, Jessica / Vickerton, Paula

    Anatomical sciences education

    2024  

    Abstract: Immersive virtual reality (i-VR) is a powerful tool that can be used to explore virtual models in three dimensions. It could therefore be a valuable tool to supplement anatomical teaching by providing opportunities to explore spatial anatomical ... ...

    Abstract Immersive virtual reality (i-VR) is a powerful tool that can be used to explore virtual models in three dimensions. It could therefore be a valuable tool to supplement anatomical teaching by providing opportunities to explore spatial anatomical relationships in a virtual environment. However, there is a lack of consensus in the literature as to its effectiveness as a teaching modality when compared to the use of cadaveric material. The aim of our study was to compare the effectiveness of i-VR in facilitating understanding of different anatomical regions when compared with cadaveric prosections for a cohort of first- and second-year undergraduate medical students. Students (n = 92) enrolled in the MBBS program at Queen Mary University of London undertook an assessment, answering questions using either Oculus i-VR headsets, the Human Anatomy VR™ application, or prosection materials. Utilizing ANOVA with Sidak's multiple comparison test, we found no significant difference between prosections and i-VR scores in the abdomen (p = 0.6745), upper limb (p = 0.8557), or lower limb groups (p = 0.9973), suggesting that i-VR may be a viable alternative to prosections in these regions. However, students scored significantly higher when using prosections when compared to i-VR for the thoracic region (p < 0.0001). This may be due to a greater need for visuospatial understanding of 3D relationships when viewing anatomical cavities, which is challenged by a virtual environment. Our study supports the use of i-VR in anatomical teaching but highlights that there is significant variation in the efficacy of this tool for the study of different anatomical regions.
    Language English
    Publishing date 2024-04-07
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2483491-9
    ISSN 1935-9780 ; 1935-9772
    ISSN (online) 1935-9780
    ISSN 1935-9772
    DOI 10.1002/ase.2419
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Cologne/Königswinter

    Zs.A 6787: Show issues Location:
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    bis Jg. 2021: Bestellungen von Artikeln über das Online-Bestellformular
    ab Jg. 2022: Lesesaal (EG)

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  7. Article: The parish and the poor in England, 1600-1850

    Broad, John

    Wealth and poverty in European rural societies from the sixteenth to nineteenth century : [COST Action A 35 Progressore] , p. 199-219

    2014  , Page(s) 199–219

    Author's details John Broad
    Language English
    Publisher Brepols Publishers
    Publishing place Turnhout
    Document type Article
    ISBN 2-503-54516-5 ; 978-2-503-54516-5
    Database ECONomics Information System

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  8. Article ; Online: Initial assessment of the efficacy of food recovery policies in US States for increasing food donations and reducing waste.

    Aitken, John A / Alaybek, Balca / Hartman, Rob / Mika, Grace / Broad Leib, Emily M / Plekenpol, Regan / Branting, Karl / Rao, Denali / Leets, Laura / Sprenger, Amber

    Waste management (New York, N.Y.)

    2024  Volume 176, Page(s) 149–158

    Abstract: In this paper, we examine the primary impact of two categories of food recovery policies on food donation and the secondary impact on food safety, food waste, and food insecurity in U.S. states. As one method of food recovery, food donation can reduce ... ...

    Abstract In this paper, we examine the primary impact of two categories of food recovery policies on food donation and the secondary impact on food safety, food waste, and food insecurity in U.S. states. As one method of food recovery, food donation can reduce food waste while mitigating food insecurity, and it can be promoted in U.S. states through strong liability protection policies that provide legal protection to food donors and through tax incentivization policies that financially reward food donors via deductions and/or credits. To provide an initial evaluation of the effects of these policies, we coded each state's food recovery policies in 2012 and 2018 and compared strong policies versus weak policies. Using data from multiple sources, we found that states with stronger liability protection policies had more food donations, and states that provide tax incentivization had more food waste. Although our analyses were correlational, rather than causal, and were reliant upon limited data, our results demonstrate that the current food recovery policy landscape in U.S. states does relate to important food waste outcomes. We discuss the implications of these findings for crafting more effective policies that encourage food recovery.
    MeSH term(s) Food ; Refuse Disposal ; Policy
    Language English
    Publishing date 2024-01-27
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2001471-5
    ISSN 1879-2456 ; 0956-053X
    ISSN (online) 1879-2456
    ISSN 0956-053X
    DOI 10.1016/j.wasman.2023.12.051
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Book ; Online: BroadStreet-Health/daily-numbers

    BroadStreet Health

    Initial development release

    2020  

    Abstract: ... but to allow time for this procedure before publication, the last three days of data are sourced from the Johns ...

    Abstract The goal of the COVID-19 Data Project was to create a research-ready data set. Our data is sourced from local public health departments from across the country and then validated by our team of over one-hundred interns through an extensive quality-assurance procedure. Our data is updated regularly, but to allow time for this procedure before publication, the last three days of data are sourced from the Johns Hopkins University data set. Data set includes data through September 25th, 2020.
    Keywords covid19
    Publishing date 2020-09-30
    Publishing country eu
    Document type Book ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    Full text online

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  10. Article: Poorer countries and the environment

    Broad, Robin / Cavanagh, John

    World development : the multi-disciplinary international journal devoted to the study and promotion of world development Vol. 72 , p. 419-431

    friends or foes?

    2015  Volume 72, Page(s) 419–431

    Author's details Robin Broad and John Cavanagh
    Keywords Costa Rica ; El Salvador ; mining ; environment ; political ecology ; poverty
    Language English
    Publisher Elsevier Science
    Publishing place Amsterdam
    Document type Article
    ZDB-ID 185339-9 ; 1500836-8
    ISSN 0305-750X
    ISSN 0305-750X
    Database ECONomics Information System

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