Results 81 to 90 of about 244,804 (333)

Recent advances in low-carbon ultra-high-performance concrete: materials, mechanisms, and sustainability perspectives

npj Materials Sustainability
Ultra-high-performance concrete combines exceptional strength and durability but carries a disproportionately high environmental burden due to its cement- and energy-intensive composition.
Shack Yee Hiew, Keat Bin Teoh, Hong S. Wong, Nemkumar Banthia, Doo-Yeol Yoo   +4 more
doaj   +1 more source

Influence of Cracking on Oxygen Transport in UHPFRC Using Stainless Steel Sensors

Applied Sciences, 2019
Reinforced concrete elements frequently suffer small cracks that are not relevant from the mechanical point of view, but they can be an entrance point for aggressive agents, such as oxygen, which could initiate the degradation processes. Fiber-Reinforced
Ana Martínez-Ibernón, Marta Roig-Flores, Josep Lliso-Ferrando, Eduardo J. Mezquida-Alcaraz, Manuel Valcuende, Pedro Serna   +5 more
doaj   +1 more source

Ultra-High Performance Concrete Overlays for Concrete Bridge Decks

IOP Conference Series: Materials Science and Engineering, 2019
With much of the world's infrastructure needing rehabilitation, new and more effective methods of repair are required to ensure that concrete structures can continue to perform adequately. This work investigates the potential for using locally produced ultra-high performance concrete (UHPC) as an overlay material to rehabilitate existing normal ...
Ahmed J. Al-Basha, William K. Toledo, Craig M. Newtson, Brad D. Weldon   +3 more
openaire   +1 more source

Allogeneic Immune Cell Perfusion Inhibits the Growth of Vascularized 3D In Vitro Tumor Models, Induces Vascular Regression and Desmoplasia, but Promotes Tumor Cell Invasion

Advanced Science, EarlyView.
This study presents a vascularized 3D tumor model to investigate immune–stromal–tumor interactions under allogeneic PBMC perfusion. While immune cells induced tumor shrinkage, they also promoted vascular regression, stromal activation, and cancer cell invasion.
Alexandra Raab, Rasika Daware, Marcelo A. Szymanski de Toledo, Oskar Weber, Dimitris Kapsokalyvas, Twan Lammers, Horst Fischer, Federica De Lorenzi, Fabian Kiessling   +8 more
wiley   +1 more source

The construction process for pre-stressed ultra high performance concrete communication tower.

PLoS ONE, 2020
Towers are important structures for installing radio equipment to emit electromagnetic waves that allow radio, television and/or mobile communications to function.
Voo Yen Lai, Farzad Hejazi, Sarah Saleem
doaj   +1 more source

Ultra-High-Performance Fiber-Reinforced Concrete: Fresh Properties

, 2022
UHPC is a cement-based composite that is used in new construction and/or renovation of existing structures to increase their service life. It is a unique composite material that may be used as an alternative to concrete in harsh conditions. Following decades of research and development, a wide range of commercial UHPC compositions are now accessible ...
openaire   +1 more source

The FOXC2‐LAMA4 Axis Orchestrates Vasculogenic Mimicry and Immunosuppressive Niche Formation to Drive Metastatic Cascade in Renal Cell Carcinoma

Advanced Science, EarlyView.
Advanced clear cell renal cell carcinoma metastasis is driven by a FOXC2+ tumor subpopulation. These cells execute vasculogenic mimicry for dissemination and secrete LAMA4. LAMA4 engages macrophage ITGA6, activating the STAT6/GATA3 axis to polarize macrophages into a pro‐metastatic, immunosuppressive phenotype.
Jiaxi Yao, Tong Xu, Chengyuan Wang, Chenyuan Wang, Junfeng Xie, Rui Zheng, Ke Wang, Xingzuo Jiang, Zewei Hu, Hongwei Jing, Lin Li, Tao Liu   +11 more
wiley   +1 more source

Monitoring the reduction in shrinkage cracking of mortars containing superabsorbent polymers [PDF]

, 2017
Ultra-high performance concrete (UHPC) is characterized by a low water-to-cement ratio, leading to improved durability and mechanical properties. However, the risk for autogenous shrinkage and cracking due to restrained shrinkage increases, which may ...
Aggelis, Dimitrios G., De Belie, Nele, De Boe, Emanuel, Lefever, Gerlinde, Snoeck, Didier, Van Hemelrijck, Danny   +5 more
core  

β‐Adrenergic Signaling Promotes Anti‐Tumor Immunity in TP53‐mutant Oral Squamous Cell Carcinoma

Advanced Science, EarlyView.
β‐adrenergic stimulation enhances anti‐tumor immunity in TP53‐deficient oral squamous cell carcinoma by inducing tumor‐derived secretion of CXCL10, which attracts and activates cytotoxic CD8+ T cells. The findings demonstrate that β‐adrenergic signaling alters tumor–immune interactions via CXCL10‐mediated paracrine activation, revealing a neuro‐immune ...
Frederico O. Gleber‐Netto, Deborah Silverman, Tongxin Xie, Shamima Akhter, Nicole R. Vaughn, Adewale Adebayo, Kala Chand Debnath, Shorook Naara, Shajedul Islam, Erik Knutsen, Emily Lorin Ashkin, Simone Anfossi, Sara Leahey, Patrick Hwu, Sebastien Talbot, Erica K Sloan, Robert Saddawi‐Konefka, Roberto Rangel, Jeffrey N. Myers, George A. Calin, Moran Amit   +20 more
wiley   +1 more source

Practical limitations of single-span ultra-high performance concrete beams [PDF]

, 2013
Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 2013.Cataloged from PDF version of thesis.Includes bibliographical references (p.
Abrams, Daniel Scott
core