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Application of a Gyroid Structure for Thermal Insulation in Building Construction.
Materials (Basel)
December 2024
Faculty of Civil Engineering, Wroclaw University of Science and Technology, 50-370 Wroclaw, Poland.
This paper concerns research into the use of 3D-printed gyroid structures as a modern thermal insulation material in construction. The study focuses on the analysis of open-cell gyroid structures and their effectiveness in insulating external building envelopes. Gyroid composite samples produced using DLP 3D-printing technology were tested to determine key parameters such as thermal conductivity (λ), thermal resistance (R) and heat transfer coefficient (U) according to ISO 9869-1:2014.
View Article and Find Full Text PDFEffectiveness of a Foam Roller Warm-Up in Professional Basketball Players: A Randomized Controlled Trial.
Int J Sports Phys Ther
January 2025
Physiotherapy Department Universidad Católica San Antonio de Murcia.
Background: The foam roller is considered a versatile tool. Along with an active warm-up, it appears to positively affect range of motion, stability, muscle stiffness, and perceived exertion with no reductions in performance.
Hypothesis/purpose: The main purpose of the study was to observe the effects of the utilization of a foam roller during the warm-up on ankle mobility and lower limb stability, and secondarily, to assess if any induced effects were sustained over time.
Efficient Load-Bearing Capacity Assessment of a Degraded Concrete Manhole Using Sectional Homogenization.
Materials (Basel)
November 2024
Department of Construction and Geoengineering, Poznan University of Life Sciences, Piątkowska 94E, 60-649 Poznan, Poland.
This study addresses a practical and efficient approach to evaluating the load-bearing capacity of severely degraded concrete manholes. Concrete deterioration, often advanced and highly irregular, can be captured accurately through surface scanning to create a detailed model of the damaged structure and also to build a simplified modeling to enable rapid engineering-level assessment, filling a critical gap in infrastructure maintenance. The repair strategy involves applying an internal polyurea layer, a variable-thickness polyurethane foam layer depending on the degree of localized degradation, and an external polyurea layer to restore the original shape of the manhole.
View Article and Find Full Text PDFThe Thermo-Oxidative Degradation of Polyurethane Open-Cell Soft Foam Investigated Through Gas Chromatography and Mass Spectrometry of Volatile Organic Compounds.
Polymers (Basel)
November 2024
Institute of Inorganic and Analytic Chemistry, Clausthal University of Technology, 38678 Clausthal-Zellerfeld, Germany.
Polyurethane (PUR) soft foams release malodorous and potentially toxic compounds when exposed to oxidative conditions. Current chamber test methods cannot distinguish between pre-existing volatiles and those formed during oxidation, nor can they assess the formation rates of oxidation products. We subjected PUR soft foam to oxidative treatment in a continuous air flow at 120 °C.
View Article and Find Full Text PDFThe immediate effects of two pilates exercises with and without a foam roller on abdominal muscle activity.
J Bodyw Mov Ther
October 2024
School of Physical Education and Sports of Ribeirão Preto, University of São Paulo, Ribeirão Preto, Brazil. Electronic address:
Pilates can be defined as exercises which are floor-based or use specialized equipment to provide resistance. The use of foam rollers (FR) have been purported to improve the recruitment of core muscles by creating an unstable surface, providing improvements to balance, posture and functional recovery in daily activities. However, there is a paucity of studies exploring the use of FR as an unstable surface.
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