Results 111 to 120 of about 89,639 (290)

Early-age monitoring of fresh cementitious material by acoustic emission [PDF]

open access: yes, 2017
Concrete properties are mainly affected by the fresh state since it has a significant impact on the long-term concrete performance. In this study, acoustic emission (AE) was applied to monitor the behavior of fresh cement paste.
Aggelis, Dimitros   +2 more
core  

Theory of Sorption Hysteresis in Nanoporous Solids: II. Molecular condensation

open access: yes, 2011
Motivated by the puzzle of sorption hysteresis in Portland cement concrete or cement paste, we develop in Part II of this study a general theory of vapor sorption and desorption from nanoporous solids, which attributes hysteresis to hindered molecular ...
Bazant, Martin Z., Bazant, Zdenek P.
core   +1 more source

Use of a continuous-flow bioreactor to evaluate nitrate reduction rate of Halomonas desiderata in cementitious environment relevant to nuclear waste deep repository [PDF]

open access: yes, 2017
The redox level of repositories can influence the mobility of the waste components stored in them (i.e. radionuclides) and thus the related safety assessments.
Albrecht, Achim   +5 more
core   +3 more sources

Critical Appraisal of Pancreaticogastrostomy After Pancreatoduodenectomy: Evolution, Evidence, and Future Prospects

open access: yesJournal of Hepato-Biliary-Pancreatic Sciences, EarlyView.
ABSTRACT Pancreaticogastrostomy (PG) emerged as a reconstructive option after pancreaticoduodenectomy (PD) due to its reported lower incidence of postoperative pancreatic fistula (POPF), but its superiority over pancreaticojejunostomy (PJ) remains unclear.
Samuel Menezes   +4 more
wiley   +1 more source

Nutritional and sensory characteristics of local and hybrid East African Highland cooking bananas: Implications for breeding programs

open access: yesJSFA reports, EarlyView.
Abstract Background Bananas (Musa species) are an important staple food and cash crop in many parts of the world. The East African Highland cooking bananas form the backbone of food security for millions of Ugandans. The demand for high quality cooking bananas is thus closely linked to their sensory characteristics (which drive consumer preference) and
Willy Nelson Kisenyi   +7 more
wiley   +1 more source

HYDRATION PROCESS AND MECHANICAL PROPERTIES OF CEMENT PASTE WITH RECYCLED CONCRETE POWDER AND SILICA SAND POWDER

open access: yesActa Polytechnica CTU Proceedings, 2017
Recycled concrete powder (RCP) mostly consisting of cement paste could be reused as partial cement replacement. The aim of this paper is to compare hydration and mechanical properties of RCP and two types of silica sand powder (SSP).
Jaroslav Topič, Zdeněk Prošek
doaj   +1 more source

THERMAL PRESSURIZATION AND ANOMALOUS THERMAL EXPANSION OF THE PORE FLUID OF A HARDENED CEMENT PASTE [PDF]

open access: yes, 2008
International audienceTemperature increase in a fluid-saturated porous material in undrained condition leads to pore pressure increase. This phenomenon of thermal pressurization is studied experimentally for a saturated hardened cement paste.
Ghabezloo, Siavash, Sulem, Jean
core   +2 more sources

Efficient and Durable Semitransparent Perovskite Solar Cells for the Application in 4T Perovskite/c‐Si Tandem Devices

open access: yesProgress in Photovoltaics: Research and Applications, EarlyView.
We present an optimized fabrication strategy incorporating a solution‐processed SnO2 buffer layer that prevents sputter‐induced damage during TCO deposition, enabling semitransparent perovskite solar cells with 21.87% efficiency, 27.15% in tandem, and exceptional long‐term stability under continuous illumination and outdoor conditions.
Satish Bykkam   +12 more
wiley   +1 more source

Residual capability of alkali binding by hydrated pozzolanic cements in long-service concrete structures [PDF]

open access: yes, 2018
An experimental procedure was developed and applied to cement pastes made with two different pozzolanic cements (CEM IV/B (P) and CEM IV/B (V)) in order to ascertain the existence of a residual capability of alkali binding by long-term hydrated ...
Antonio Evangelista Paolini, And   +2 more
core   +2 more sources

A Hero's Journey to Systemic Change: Developing Expertise in Agricultural Development

open access: yesSustainable Development, EarlyView.
ABSTRACT Experts in rural development and agrarian change wield considerable influence over programme design and delivery, directing resources and shaping trajectories towards the Sustainable Development Goals (SDGs). Yet the pathways through which such expertise develops remain under‐examined. This study examines the journey to expertise among experts
Kirt Hainzer   +7 more
wiley   +1 more source

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