Browse Articles

Investigation of finite element simulation-based bond-slip effect for seismically vulnerable school reinforced concrete building frame

Reconstructing fine-scale 3D wind fields with terrain-informed machine learning

Admission blood pressure and mortality in acute aortic dissection: Southwest China multicenter retrospective cohort study

FLEXTAG: a small and self-renewable protein labeling system for anti-fading multi-color super-resolution imaging

Transparent Perovskite Light‐Emitting Diodes with Conductive Oxide Top Electrodes

ABSTRACT Transparent light‐emitting diodes (TrLEDs) allow to simultaneous display data while maintaining the visibility of the surroundings. This feature unlocks a new range of applications. Perovskite‐based emitting materials are promising for such devices in view of their narrow emission spectrum and color tunability. Here, we show that depositing an indium tin oxide (ITO) electrode using pulsed laser deposition in combination with a metal oxide buffer layer is a universal approach for the fabrication of transparent perovskite LEDs (TrPeLEDs) with a variety of compositions and device configurations. Green TrPeLEDs based on in situ formed perovskite nanocrystals (NC) deposited directly on ITO coated glass substrates achieved a record‐high combined luminance of 150 000 cd m −2 . When instead a TrPeLED using a thin colloidal NCs layer was used it led to LEDs with an average visible transmittance of 80% and a color rendering index above 90.

An integrated edge–cloud IoT framework for resilient disaster prevention in fire detection and forest carbon assessment

Site-defined Cu-O ensembles enable hydrogen-conserving light-driven ethane upgrading

A parameter estimation method for modelling proton exchange membrane fuel cell based on enhanced meta evolutionary differential evolution algorithm

Integrated photonic ultrawideband real-time spectrum sensing for 6G wireless networks

Environmental education as a means of combating growing environmental pollution: an optimized- explainable artificial intelligence (XAI) approach

Massive-scale spatial multiplexing of multimode VCSELs with a 3D-printed photonic lantern

Fast sensorless collision detection for resource-constrained pmsm controllers using an FFRLS-based method

Abstract This paper proposes a low-complexity, fast sensorless collision detection method for permanent-magnet synchronous motors (PMSMs) based on a forgetting-factor recursive least-squares (FFRLS) estimator. The method estimates the load torque from the motor motion equations and detects collisions by monitoring abrupt changes in a processed load-torque metric. The algorithm is tailored for resource-constrained embedded controllers: it avoids high-order matrix operations and the use of external sensors while achieving rapid detection. Experimental results under constant speed, acceleration, and time-varying load conditions demonstrate fast and repeatable detection performance. The approach provides a practical trade-off between computational cost and detection reliability for embedded motor drives.

Infection-acquired protection against SARS-CoV-2 infection and clinical severity by number of prior infections

Disulfiram attenuates immobilization-induced knee joint contracture by suppressing Caspase-1/GSDMD-mediated pyroptosis

Unveiling the thermodynamic-kinetic trade-off effect on acid sites in zeolite-catalyzed alcohol dehydration

Multi-temporal analysis of mountainous terrain changes based on UAV images and point cloud data

Discovery of an ITK and TRK kinase inhibitor for the potential topical treatment of atopic dermatitis

A hybrid spatial blur detection and restoration algorithm for smartphone captured document images

Structural and mechanistic insights into the dual-nuclease defense protein Upx as an anti-phage system

Stretch-mediated hypertrophy and strength increases and their impact on dynamic balance performance - a randomized controlled intervention study

Abstract Optimizing morphological and functional muscle parameters is of crucial importance in sports and rehabilitation. While resistance training is the most common intervention when improving muscle strength as well as general motor function such as balance, this option is not always applicable, calling for sufficient alternatives. One such opportunity is high-volume, high-intensity stretching. While previous research focused on lower leg muscles, this is the first study exploring effects on the quadriceps. Forty-nine recreationally active participants were allocated into a control group and an intervention group, which underwent twelve sessions of 15-min unilateral supervised hip flexor stretch for both legs over 4–5 weeks. Measurements included muscle thickness, isometric leg extension strength, and dynamic balance. Regional stretch-mediated ultrasound muscle thickness increased significantly in the rectus femoris (proximal: η p ²=0.24–0.41, p  = 0.002-<0.001; distal: η p ²=0.14–0.40, p  = 0.001-<0.001), but showed inconsistent effects in the vastus lateralis (η p ²=0.18, p  = 0.008 only in the left leg). Isometric strength effects were significant in 70° (shortened position, right leg: η p ²=0.09, p  = 0.04; left leg: η p ²=0.21, p  = 0.001), but not at 110° (lengthened position) knee angle. Balance performance improved significantly leg-dependent in anterior (η p ²=0.13, p  = 0.02, left leg), posterolateral (η p ²=0.14, p  = 0.009, left leg) and posteromedial directions (η p ²=0.13, p  = 0.02, right leg). This study provides first results on stretch-mediated muscle thickness and strength increases in the quadriceps with the potential for implementation in balance training, if participation in an active, supervised training program is not feasible. Future research should include additional balance outcomes, other muscle groups and clinical settings. German Clinical Trials Register ID: DRKS00036510 (03.02.2026). URL: https://drks.de/search/en/trial/DRKS00036510/details .