Results 61 to 70 of about 301 (182)

3D Soft Hydrogels Induce Human Mesenchymal Stem Cells “Deep” Quiescence

Advanced Healthcare Materials, Volume 15, Issue 19, 22 May 2026.
Three‐dimensional soft hydrogels mimicking the bone marrow niche induce deep quiescence in human mesenchymal stem cells. Unlike 2D culture, 3D matrices halt proliferation, regulate cell‐cycle and quiescence markers, and downregulate mTORC1 signaling, preserving stem cell phenotype and therapeutic potential ex vivo.
David Boaventura Gomes, Timo Rademakers, Ana Filipa Henriques Lourenço, Andrea Calore, Clarissa Tomasina, Denis van Beurden, Jinjie Venema, Bryan Chömpff, Hong Liu, Nicole Bouvy, Sandra Camarero‐Espinosa, Lorenzo Moroni   +11 more
wiley   +1 more source

Approximate Analytical Solution for Longitudinal Stress in U-Shaped Aqueducts Induced by Circumferential Tensioning

Applied Sciences
During circumferential tensioning of prestressing strands in U-shaped aqueducts, longitudinal tensile stresses may develop and impair crack resistance. Most existing studies rely on three-dimensional finite element (FE) simulations. Although accurate, FE
Heng Min, Yuhang Chen, Jian Wang
doaj   +1 more source

Pellet Printing for Soft Robotic Devices

Advanced Science, Volume 13, Issue 30, 28 May 2026.
Fused Granulate Fabrication (FGF) is established here as a reliable method for fabricating soft, airtight robotic devices. Through coordinated optimization of hardware, material selection, and process parameters, this approach enables high‐speed printing of thermoplastic elastomers with silicone‐like softness and modulus.
Yijia Wu, Ju‐Hung Chen, Ariana Olivares, Katherine Kostak, Stefan Pedicone, Savita V. Kendre, Markus P. Nemitz   +6 more
wiley   +1 more source

Anchorage System Contribution to Post‐Tensioned Bridge Collapse

Engineering Reports, Volume 8, Issue 5, May 2026.
This paper presents an experimental investigation of a 1960s precast post‐tensioned girder bridge in Trstena, Slovakia, revealing severe corrosion and anchorage degradation that ultimately led to its collapse. The findings highlight critical vulnerabilities in obsolete anchorage systems and emphasize the need for proactive assessment and maintenance of
Petra Bujnakova, Jakub Kralovanec, Martin Moravcik, Frantisek Bahleda   +3 more
wiley   +1 more source

Reliability of Acoustic Emission as a Technique to Detect Corrosion and Stress Corrosion Cracking on Prestressing Steel Strands

International Journal of Electrochemical Science, 2013
Corrosion of prestressing strands is one of the main causes of deterioration of civil engineering structures, hence the need of monitoring these cables on real-time in order to avoid any accident.
Lamine Djeddi, Rabia Khelif, Salim Benmedakhene, Jérôme Favergeon   +3 more
doaj   +1 more source

Modal identification of prestressed concrete beams with artificial damage on prestressing strands

Procedia Structural Integrity
This contribution illustrates the preliminary research findings of an ongoing structural health monitoring (SHM) campaign on prestressed concrete (PC) beams with artificially damaged prestressing strands. The specimens have been designed to be representative of a scaled bridge girder belonging to a 4-girder grillage scheme, with the transverse ...
De Domenico D., Shamsaddinlou A., Maugeri N., Longo P., Messina D., Recupero A., La Mazza D., Longo M., Darò P., Mancini G.   +9 more
openaire   +2 more sources

Transfer Lengths in Pretensioned Concrete Measured Using Various Sensing Technologies

International Journal of Concrete Structures and Materials, 2019
Although pretensioned concrete structures have increasingly been used worldwide, a number of design issues need to be addressed to further improve the structural performance.
Se-Jin Jeon, Ho Shin, Sang-Hyun Kim, Sung Yong Park, Jun-Mo Yang   +4 more
doaj   +1 more source

EFFECT OF THE STRANDS FIXITY PROFILE SHAPE ON THE FLEXURAL BEHAVIOR OF STEEL BEAMS

Journal of Engineering and Sustainable Development
This study concerns the effect of the external prestressing strand shape profile on the flexural behavior of steel beams. Seven steel beams that have the same cross-section are strengthened by external strands fixed by using Saddle Points of Deviation ...
Mohammed Rasheed, Kamal Mahmoud, Mustafa Ahmed Yousif , Ahmed F. Abdullah   +3 more
doaj   +1 more source

Numerical modeling of the transfer length of 17.8 mm (0.7 in) diameter prestressing strands in pretensioned members

Discover Applied Sciences
The bond between concrete and reinforcing steel bars in reinforced concrete structures is crucial. Prestressing strands with a diameter of 17.8 mm (0.7 in) transfer higher compression per unit area than smaller strands, improving moment capacity and ...
Zaher Alkurdi, Tamás Kovács
doaj   +1 more source

An Improved Equation for Predicting the Stress of Bonded High-Strength Strands at Flexural Failure

Buildings
To achieve efficient design and ensure the safety of concrete structures, the use of high-strength concrete, reinforcing steel, and prestressing tendons has been steadily increasing.
Kyeong-Jin Sung, Jisu Hong, Se-Jin Jeon
doaj   +1 more source