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  1. Article ; Online: Effect of strain rates on the mechanical response of whole muscle bundle.

    Tran, Dat Trong / Tsai, Liren

    Journal of biological physics

    2023  Volume 49, Issue 2, Page(s) 257–267

    Abstract: Muscle injuries frequently happen during sports activities and exercise, which could have serious consequences if not diagnosed and treated promptly. This research aims to investigate the quasi-static and dynamic responses of over 30 fresh frog ... ...

    Abstract Muscle injuries frequently happen during sports activities and exercise, which could have serious consequences if not diagnosed and treated promptly. This research aims to investigate the quasi-static and dynamic responses of over 30 fresh frog semitendinosus muscles utilizing Split Hopkinson Pressure Bars (SHPB) and a material testing system under strain rates between 0.001 ~ 200 s
    MeSH term(s) Stress, Mechanical ; Muscles/physiology ; Elastic Modulus ; Materials Testing
    Language English
    Publishing date 2023-04-03
    Publishing country Netherlands
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2016734-9
    ISSN 1573-0689 ; 0092-0606
    ISSN (online) 1573-0689
    ISSN 0092-0606
    DOI 10.1007/s10867-023-09630-6
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  2. Article ; Online: Adapting to the rapidly moving target artificial intelligence (AI) in scholarly publishing.

    Felländer-Tsai, Li / Overgaard, Søren

    Acta orthopaedica

    2023  Volume 94, Page(s) 625

    MeSH term(s) Humans ; Artificial Intelligence ; Scholarly Communication
    Language English
    Publishing date 2023-12-27
    Publishing country Sweden
    Document type Journal Article
    ZDB-ID 2180677-9
    ISSN 1745-3682 ; 1745-3674
    ISSN (online) 1745-3682
    ISSN 1745-3674
    DOI 10.2340/17453674.2023.34900
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    In stock of ZB MED Cologne/Königswinter

    Uk I Zs.99: Show issues Location:
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  3. Conference proceedings ; Online: Low-latitude ionospheric F-layer irregularity observations using multi-instrument and multi-station systems

    Tsai, L. / Su, S. / Lv, J.

    XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG)

    2023  

    Abstract: Accurate and precise specification and characterization of the ionospheric electron density ( N e ) irregularities are important to radio sky-wave communications and satellite navigation. In this scenario, multi-instruction and multi-station systems are ... ...

    Abstract Accurate and precise specification and characterization of the ionospheric electron density ( N e ) irregularities are important to radio sky-wave communications and satellite navigation. In this scenario, multi-instruction and multi-station systems are proposed to be organized for ionospheric F-layer irregularity and scintillation observations in the low-latitude regions. We first indicate the existence of an equatorial plasma bubble (EPB) using the FS7/COSMIC2 GPS/GLONASS radio occultation (RO) observations. We verify the latitudinal extent of the tracked plasma bubble using the recorded ionograms from the Vertical Incidence Pulsed Ionospheric Radar (VIPIR) network located in the east-Asia area. We further discuss the spatial and temporal variabilities of two-dimensional vertical scintillation index VS 4 maps based on the simultaneous GPS L1-band signal measurements from more than 130 ground-based receivers located in Taiwan. We also operate more than four high-sampling software-defined GPS&SBAS receivers in Taiwan and characterize the targeted plasma irregularities by carrying out spectrum analyses of the received signal. Furthermore, we suggest that a post sunset decrement on the virtual heights of fixed-frequency ionospheric echoes could be a good precursor for post sunset scintillation and equatorial spread-F events. Such features can be used for correlation analysis and comparisons with plasma drifts retrieved by the International Reference Ionosphere (IRI) model.
    Subject code 551
    Language English
    Publishing country de
    Document type Conference proceedings ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  4. Conference proceedings ; Online: Ocean-surface wave measurements using scintillation theories on seaborne software-defined GPS and SBAS reflectometry observations

    Tsai, L. / Chien, H. / Su, S. / Liu, C.

    XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG)

    2023  

    Abstract: In this study, a low-cost software-defined Global Positioning System (GPS) and Satellite-Based Augmentation System (SBAS) Reflectometry (GPS&SBAS-R) system has been built and proposed to measure ocean-surface wave frequency and velocity on board the ... ...

    Abstract In this study, a low-cost software-defined Global Positioning System (GPS) and Satellite-Based Augmentation System (SBAS) Reflectometry (GPS&SBAS-R) system has been built and proposed to measure ocean-surface wave frequency and velocity on board the research vessel New Ocean Researcher 1 (R/V NOR-1) of Taiwan. A power-law ocean wave spectrum model has been used and applied with the Kirchhoff approximation to solve the electromagnetic wave scattering problem from rough ocean surface and compare with experimental seaborne GPS&SBAS-R observations. Meanwhile, the intensity scintillation of high-sampling GPS&SBAS-R signal acquisition data is thought to be caused by the moving rough surfaces of the targeted ocean. We found that each derived scintillation power spectrum is a high-pass filtered result on sea/ocean-surface elevation fluctuations and depends on the First Fresnel Zone (FFZ) value and the ocean-surface wave motion velocity. The determined ocean-surface wave parameters, e.g. wave velocity and spectral index, have been compared and validated against nearby buoy measurements.
    Subject code 551
    Language English
    Publishing country de
    Document type Conference proceedings ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  5. Article ; Online: Contrary response of porcine articular cartilage below and over 1000 s

    Tran, D T / Juang, Y C / Tsai, L

    Clinical biomechanics (Bristol, Avon)

    2021  Volume 90, Page(s) 105506

    Abstract: Background: Knee joints experience excessive loads quite frequently during sports activities, and these shocks could accelerate progressive degeneration in articular cartilage.: Methods: Quasi-static and dynamic response of porcine knee articular ... ...

    Abstract Background: Knee joints experience excessive loads quite frequently during sports activities, and these shocks could accelerate progressive degeneration in articular cartilage.
    Methods: Quasi-static and dynamic response of porcine knee articular cartilages were investigated in this research. Split Hopkinson Pressure Bars (SHPB) were utilized to examine the articular cartilage properties at strain rates between 0.01-2000 s
    Findings: The results showed that strain rate is an important factor for articular cartilages, distinctively divided into above and below 1000 s
    Interpretation: The biphasic structure of the cartilage explained the change of modulus. At the lower strain rates, fibers realigned and solidified the structure, while at higher strain rates, there is not enough time for the tissue fluid to move inside the cartilage, leading to a reduction in the deformability of the specimen and raising of Young's modulus. The results can be utilized to provide some useful data for biomaterial and computational works in the future.
    MeSH term(s) Animals ; Cartilage, Articular ; Elastic Modulus ; Stress, Mechanical ; Swine
    Language English
    Publishing date 2021-09-30
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 632747-3
    ISSN 1879-1271 ; 0268-0033
    ISSN (online) 1879-1271
    ISSN 0268-0033
    DOI 10.1016/j.clinbiomech.2021.105506
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    Zs.B 2876: Show issues Location:
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  6. Article ; Online: Pandemic pressure: policy, politics, profession, and rapid publication.

    Felländer-Tsai, Li

    Acta orthopaedica

    2020  Volume 91, Issue 3, Page(s) 221

    MeSH term(s) COVID-19 ; Coronavirus Infections/epidemiology ; Coronavirus Infections/prevention & control ; Health Policy ; Humans ; Infectious Disease Transmission, Patient-to-Professional ; Information Dissemination ; Pandemics/prevention & control ; Pneumonia, Viral/epidemiology ; Pneumonia, Viral/prevention & control ; Politics ; Publications ; Time Factors
    Keywords covid19
    Language English
    Publishing date 2020-04-14
    Publishing country England
    Document type Editorial
    ZDB-ID 2180677-9
    ISSN 1745-3682 ; 1745-3674
    ISSN (online) 1745-3682
    ISSN 1745-3674
    DOI 10.1080/17453674.2020.1753162
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    Uk I Zs.99: Show issues Location:
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  7. Article: Using call detail records to determine mobility patterns of different socio-demographic groups in the western area of Sierra Leone during early COVID-19 crisis.

    Li, Yanchao / Ran, Ziyu / Tsai, Lily / Williams, Sarah

    Environment and planning. B, urban analytics and city science

    2023  Volume 50, Issue 5, Page(s) 1298–1312

    Abstract: Human mobility patterns created from mobile phone call detail records (CDRs) can provide an essential resource in data-poor environments to monitor the effects of health outbreaks. Analysis of this data can be instrumental for understanding the movement ... ...

    Abstract Human mobility patterns created from mobile phone call detail records (CDRs) can provide an essential resource in data-poor environments to monitor the effects of health outbreaks. Analysis of this data can be instrumental for understanding the movement pattern of populations allowing governments to set and refine policies to respond to community health risks. Building on CDR mobility analysis techniques, this research set out to test whether combining CDR mobility indicators with socio-economic information can illustrate differences between different socio-economic groups' exposure risks to COVID-19. The work focuses on the Western Area of Sierra Leone which houses the capital Freetown because it lacks existing mobility data and therefore can be a great example of how CDR can be transformed for this use. To determine mobility patterns, we applied the radius of gyration, regularity of movement, and motif types analytics commonly used in CDR research. We then applied a clustering algorithm to these results to understand user trends. Then we compared the results of the three methods with socio-economic status determined from census data in the same geography. The results show the daily movement of cell phone users of lower socio-economic status covered greater distances in the Western Area before and after lockdown, thereby showing a greater risk to COVID-19. The research also shows that groups of higher social status decreased mobility significantly after lockdown and did not return to pre-COVID-19 levels, unlike lower-social status groups.
    Language English
    Publishing date 2023-06-06
    Publishing country United States
    Document type Journal Article
    ISSN 2399-8083
    ISSN 2399-8083
    DOI 10.1177/23998083231158377
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  8. Article ; Online: The bone anchored prostheses for amputees - Historical development, current status, and future aspects.

    Li, Yan / Felländer-Tsai, Li

    Biomaterials

    2021  Volume 273, Page(s) 120836

    Abstract: In the past 50 years, bone anchored prostheses have evolved from a concept for experimental treatment to a rapidly developing area in orthopedics and traumatology. Up to date, there are dozens of centers in the world providing osseointegration amputation ...

    Abstract In the past 50 years, bone anchored prostheses have evolved from a concept for experimental treatment to a rapidly developing area in orthopedics and traumatology. Up to date, there are dozens of centers in the world providing osseointegration amputation reconstructions and more than a thousand patients using the bone anchored prostheses. Compared with conventional socket prostheses, the bone anchored prosthesis by osseointegration avoids the debilitating problems related with soft tissues. It also provides physiological weight bearing, improved range of motion, and sensory feedback, all of which contribute to the improvement on quality of life for amputees. The present article briefly reviews the historical development of osseointegration surgery for amputation reconstruction and the current challenges. The implant design characters and surgical techniques of the two types of implants; the screw-type implant (presented by the OPRA system), and the press-fit implants (presented by EEP and OPL systems) are described. The major complications, infections and mechanical failures, are discussed in detail based on the latest evidence. Future aspects and experimental trials aiming to overcome the current challenges are presented.
    MeSH term(s) Amputation ; Amputees ; Artificial Limbs ; Bone-Anchored Prosthesis ; Humans ; Osseointegration ; Prosthesis Design ; Prosthesis Implantation ; Quality of Life
    Language English
    Publishing date 2021-04-19
    Publishing country Netherlands
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Review
    ZDB-ID 603079-8
    ISSN 1878-5905 ; 0142-9612
    ISSN (online) 1878-5905
    ISSN 0142-9612
    DOI 10.1016/j.biomaterials.2021.120836
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    Zs.B 2371: Show issues Location:
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  9. Article ; Online: AI ethics, accountability, and sustainability: revisiting the Hippocratic oath.

    Felländer-Tsai, Li

    Acta orthopaedica

    2019  Volume 91, Issue 1, Page(s) 1–2

    MeSH term(s) Access to Information/ethics ; Artificial Intelligence/ethics ; Confidentiality/ethics ; Decision Support Techniques ; Hippocratic Oath ; Humans ; Image Interpretation, Computer-Assisted ; Social Responsibility
    Language English
    Publishing date 2019-10-30
    Publishing country England
    Document type Editorial
    ZDB-ID 2180677-9
    ISSN 1745-3682 ; 1745-3674
    ISSN (online) 1745-3682
    ISSN 1745-3674
    DOI 10.1080/17453674.2019.1682850
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    Uk I Zs.99: Show issues Location:
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  10. Article: Personal protection equipment for orthopaedic and trauma surgery during the COVID-19 pandemic: The results of an EFORT survey initiative.

    Karachalios, Theofilos / Maasalu, Katre / Felländer-Tsai, Li

    EFORT open reviews

    2022  Volume 7, Issue 2, Page(s) 122–128

    Abstract: Orthopaedic and trauma surgeons performing surgery in the COVID-19 pandemic environment faced problems with availability, use, rationing, modification, compliance and recycling of personal protection equipment (PPE). Orthopaedic and trauma surgeons were ... ...

    Abstract Orthopaedic and trauma surgeons performing surgery in the COVID-19 pandemic environment faced problems with availability, use, rationing, modification, compliance and recycling of personal protection equipment (PPE). Orthopaedic and trauma surgeons were not well informed concerning the use of PPE for aerosol-generating orthopaedic and trauma procedures. Scientific bodies, health authorities and management have provided insufficient guidelines for the use of PPE in aerosol-generating orthopaedic and trauma procedures. The availability of specific PPE for orthopaedic and trauma operating theatres is low. Hospital management and surgeons failed to address the quality of operating theatre ventilation or to conform to recommendations and guidelines. Operating theatre PPE negatively affected surgical performance by means of impaired vision, impaired communication, discomfort and fatigue. Existing PPE is not adequately designed for orthopaedic and trauma surgery, and therefore, novel or modified and improved devices are needed.
    Language English
    Publishing date 2022-02-15
    Publishing country England
    Document type Journal Article ; Review
    ZDB-ID 2844421-8
    ISSN 2058-5241 ; 2058-5241 ; 2396-7544
    ISSN (online) 2058-5241
    ISSN 2058-5241 ; 2396-7544
    DOI 10.1530/EOR-21-0120
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