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[Transcutaneous osseointegrated prostheses systems (TOPS) for rehabilitation following limb loss : Surgical approach for necessary removal of the implant].
Oper Orthop Traumatol
January 2025
Klinik für Unfall‑, Hand- und Wiederherstellungschirurgie, Universitätsmedizin Rostock, Schillingallee 35, 18057, Rostock, Deutschland.
Objective: Removal of a transcutaneous osseintegrated endo-fix stem (ESKA Orthopaedic, Lübeck, Germany) following a fatigue fracture of the implant, whilst protecting the residual femur bone to allow transcutaneous osseointegrated prosthesis system (TOPS) reimplantation.
Indications: A patient's request for a further TOPS implantation following a fatigue fracture of a circular osseointegrated implant stem.
Contraindications: Impending destruction of the bone tube through mobilisation of the femoral implant stem with insufficient thickness of the cortical wall (< 2-3 mm).
Simulation of 24,000 Electron Dynamics: Real-Time Time-Dependent Density Functional Theory (TDDFT) with the Real-Space Multigrids (RMG).
J Chem Theory Comput
January 2025
Department of Physics, North Carolina State University, Raleigh, North Carolina 27695-8202, United States.
We present the theory, implementation, and benchmarking of a real-time time-dependent density functional theory (RT-TDDFT) module within the RMG code, designed to simulate the electronic response of molecular systems to external perturbations. Our method offers insights into nonequilibrium dynamics and excited states across a diverse range of systems, from small organic molecules to large metallic nanoparticles. Benchmarking results demonstrate excellent agreement with established TDDFT implementations and showcase the superior stability of our time integration algorithm, enabling long-term simulations with minimal energy drift.
View Article and Find Full Text PDFPleural Rosai-Dorfman disease complicated with renal clear cell carcinoma: a case report and literature review.
Front Oncol
January 2025
Department of Radiology, Daping Hospital, Army Medical University, Chongqing, China.
Background: Rosai-Dorfman disease (RDD), also known as sinus histiocytosis with massive lymphadenopathy, is a rare non-malignant disorder characterized by excessive proliferation of histiocytes, the cause of which remains unknown. Although the lymph nodes are the most commonly affected site, some patients may present with extranodal involvement, particularly in the skin, nasal cavity, eyes, and bones. In this report, we aim to present a unique case of RDD with pleural involvement in a 61-year-old patient.
View Article and Find Full Text PDFFacing migration under adverse conditions: challenges and resilience in the Colombo-Venezuelan border area.
BMC Public Health
January 2025
Centre for Medicine and Society, University of Freiburg, Freiburg, Germany.
Background: Internal displacement and cross-country migration are an increasing global phenomenon drawing the attention of politicians and the public. Causes and effects on the migrants and receptor populations are varied and often shaped by immigration laws and how migrants and refugees are being dealt with by local conditions, policy frameworks and by the host population (receptors). The massive influx of Venezuelan migrants into Colombia for more than a decade has characteristics which warrant a systematic analysis to identify contextual and individual factors favouring and hindering the well-being of migrants and their new Colombian neighbours of the receptor population.
View Article and Find Full Text PDFDual-channel near-field holographic MIMO communications based on programmable digital coding metasurface and electromagnetic theory.
Nat Commun
January 2025
Institute of Electromagnetic Space, Southeast University, Nanjing, China.
Holographic multiple-input multiple-output (MIMO) method leverages spatial diversity to enhance the performance of wireless communications and is expected to be a key technology enabling for high-speed data services in the forthcoming sixth generation (6G) networks. However, the antenna array commonly used in the traditional massive MIMO cannot meet the requirements of low cost, low complexity and high spatial resolution simultaneously, especially in higher frequency bands. Hence it is important to achieve a feasible hardware platform to support theoretical study of the holographic MIMO communications.
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