Results 31 to 40 of about 329 (203)

Lightweight self-compacting concrete with light expanded clay aggregate (LECA)

MATEC Web of Conferences, 2018
Lightweight concretes have been successfully applied in building constructions for many years due to their favorable material properties, particularly their low specific weight in connection with a high strength, a high capability of thermal insulation ...
Heiza Khaled, Eid Fatma, Masoud Taha
doaj   +1 more source

Constructed wetlands with light expanded clay aggregates for agricultural wastewater treatment [PDF]

Science of The Total Environment, 2013
Constructed wetlands (CWs) are receiving a renewed attention as a viable phytotechnology for treating agricultural wastewaters and for the removal of more specific pollutants, in particular recalcitrant ones. In this work, the performance of CW mesocosms using light expanded clay aggregates (LECA) as the bed's substrate and planted with Phragmites ...
Dordio, Ana V., Carvalho, Alfredo Jorge Palace   +1 more
openaire   +3 more sources

Caracterização microestrutural da argila expandida para aplicação como agregado em concreto estrutural leve Microstructural evaluation of expanded clay to be used as lightweight aggregate in structural concrete

Cerâmica, 2006
A utilização da argila expandida como agregado graúdo é economicamente viável na fabricação de concretos devido à redução da massa especifica que estes agregados proporcionam, minimizando os carregamentos atuantes nas estruturas.
W. G. Moravia, C. A. S. Oliveira, A. G. Gumieri, W. L. Vasconcelos   +3 more
doaj   +1 more source

The Role of Hematopoietic Cell Transplantation in Ataxia‐Telangiectasia

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background Ataxia‐telangiectasia (A‐T) is a DNA repair disorder characterized by neurodegeneration, immunodeficiency, and cancer predisposition. Hematopoietic cell transplantation (HCT) is an established therapy in related disorders such as Fanconi anemia (FA) and Nijmegen breakage syndrome (NBS), but its role in A‐T is unclear.
Laila Alkhouli, Seth Rotz, Masatoshi Takagi, Richa Sharma   +3 more
wiley   +1 more source

Promiscuous stimulation of HSP70 ATPase activity by parasite‐derived J‐domains

FEBS Open Bio, EarlyView.
The malaria parasite Plasmodium falciparum exports three highly homologous yet functionally divergent J‐domain proteins into human erythrocytes. Here, we show that J‐domains isolated from all three proteins effectively stimulate the ATPase activity of both endogenous host and exported parasite HSP70 chaperones.
Julian Barth, Moritz Koch, Le‐Han Rössner, Johanna Eichhorn, Denys Pogoryelov, Matthias P. Mayer, Jude M. Przyborski   +6 more
wiley   +1 more source

The effect of concrete composition and aggregates properties on performance of concrete

Journal of Civil Engineering and Management, 2009
The properties of the hardened concrete depend on the selected raw materials: size and amount of the particles of coarse aggregate, as well as on the ratio of other components.
Romualdas Mačiulaitis, Marija Vaičienė, Ramunė Žurauskienė   +2 more
doaj   +1 more source

Designing Polymer Nanocomposites for X‐Ray Shielding: Mechanisms, Architectures, and Scalable Processing

Advanced Engineering Materials, EarlyView.
This review highlights advances in lightweight, lead‐free polymer nanocomposites for diagnostic X‐ray shielding. By linking filler chemistry, dispersion, architecture, and photon interaction mechanisms, it establishes structure–performance relationships guiding material design.
Aklilu G. Messele, Hossein Ipakchi, Tizazu H. Mekonnen   +2 more
wiley   +1 more source

Mechanical Behavior and Fracture Mechanisms of MXene/PVDF Nanocomponsites: In Situ Characterization and Multiscale Analysis

Advanced Functional Materials, EarlyView.
Multiscale experiments and modeling reveal how Ti3C2Tx MXene nanosheets reinforce PVDF nanocomposites. An optimal MXene loading (∼1 wt.%) nearly doubles tensile strength through efficient stress transfer, flake alignment, and crack‐deflection mechanisms, transforming ductile polymer behavior into a controlled multi‐stage fracture pathway which aligns ...
Bita Soltan Mohammadlou, James FitzPatrick, Li Meng, Kateryna Shevchuk, Ahmad Najafi, Yury Gogotsi   +5 more
wiley   +1 more source

Conceptualising quality early childhood education: Learning from young children in Brazil and South Africa through creative and play‐based methods

British Educational Research Journal, EarlyView., 2023
Abstract Early childhood has increasingly been acknowledged as a vital time for all children. Inclusive and quality education is part of the United Nations Sustainable Development Goals, with the further specification that all children have access to quality pre‐primary education.
Laura H. V. Wright, Irene Rizzini, Malibongwe Gwele, Lynn McNair, Cristina Laclette Porto, Marsha Orgill, E. Kay M. Tisdall, Malcolm Bush, Linda Biersteker   +8 more
wiley   +1 more source

The influence of coarse aggregate concentration on the strength of concrete and on the porosity of concrete mortar/Stambiojo užpildo koncentracijos įtaka betono stiprumui ir skiedininės dalies poringumui

Journal of Civil Engineering and Management, 2001
The results of experiments dealing with coarse aggregate concentration influence on the concrete strength and the structure of hardened cement paste and mortar of concrete are presented in the paper.
Gintautas Skripkiūnas, Vitoldas Vaitkevičius   +1 more
doaj   +1 more source