Results 71 to 80 of about 15,633,684 (298)

Push-out test of eco-friendly steel-concrete–steel composite sections enhanced by polypropylene fibers: An experimental study and statistical analysis

open access: yesResults in Engineering
Steel-concrete-steel (SCS) structural element solutions are rising due to their advantages over conventional reinforced concrete in terms of cost and strength.
Sawsan Akram Hassan   +2 more
doaj   +1 more source

The push out bond strength of polydimethylsiloxane endodontic sealers to dentin

open access: yesBMC Oral Health, 2019
Background The purpose of this experiment was to assess the push out bond strength of Polydimethylsiloxane sealers (GuttaFlow 2 and GuttaFlow Bioseal by Colte’ne/Whaledent, Altstätten, Switzerland).
Kinley Dem   +5 more
doaj   +1 more source

Design of a Multistable Finger Prosthesis with Programmable Metamaterials

open access: yesAdvanced Engineering Materials, EarlyView.
This research article shows the development of a multistable programmble metamaterial for the use as a finger prosthesis. The material was designed on different hierarchical levels where the influence of geometrical parameters and combination of mechanical elements was explored.
Franziska Wenz   +5 more
wiley   +1 more source

Experimental Investigations on Tensile and Shear Behavior of the Interface Between UHP-ECC and Concrete

open access: yesInternational Journal of Concrete Structures and Materials
Ultra-high performance engineered cementitious composite (UHP-ECC), which is known for its exceptional compressive strength, tensile strength, and ductility, has been emerged as a promising option for repairing and strengthening reinforced concrete (RC ...
Jun-Jie Zeng   +5 more
doaj   +1 more source

Influence of TiC and TiN Ceramic Reinforcements on the Microstructure, Thermal Expansion Behavior, and Tensile Properties of Invar 36 Manufactured by Laser Powder Bed Fusion

open access: yesAdvanced Engineering Materials, EarlyView.
This study examines Invar composites reinforced with titanium carbide (TiC) and titanium nitride (TiN) using laser powder bed fusion (LPBF). It presents the influence of reinforcements on microstructure, tensile properties, and thermal expansion. Results show that TiC effectively strengthens Invar while maintaining low thermal expansion, whereas TiN ...
Ayodeji Nathaniel Oyedeji   +3 more
wiley   +1 more source

Comparison of regional bond strength of post space of fiber-reinforced post luted with two types of cements at different testing times

open access: yesJournal of Baghdad College of Dentistry, 2014
Back ground: This in vitro study was carried out to investigate the effect of post space regions (coronal, middle and apical), Time and the mode of polymerization (dual, self-cured) of the cements used on the bond strength between translucent fiber post ...
Haitham J Al-Azzawi, M N H
doaj  

Push-out bond strength values (mean ± standard deviation in MPa) of the tested groups.

open access: yes, 2018
Push-out bond strength values (mean ± standard deviation in MPa) of the tested groups.
Zahra Jowkar (5076662)   +2 more
core   +1 more source

Stretching the Printability Metric in Direct‐Ink Writing with Highly Extensible Yield‐Stress Fluids

open access: yesAdvanced Functional Materials, EarlyView.
This study introduces “drawability” as a new metric for assessing printability in direct‐ink writing, focusing on gap‐spanning performance and speed robustness. By designing yield‐stress fluids with high extensibility, we demonstrate that extensional strain‐to‐break significantly enhances printability.
Chaimongkol Saengow   +9 more
wiley   +1 more source

PCS-Q-G. Parental Caregiving Style Questionnaire – German Version

open access: yes
Der PCS-Q-G dient der retrospektiven Erfassung des elterlichen Fürsorgeverhaltens. In Analogie zum 3-Kategorien-Modell von Bindung unterscheidet das Instrument zwischen den drei Stilen „warm/aufmerksam“, „ambivalent/inkonsistent“ und „kalt/abweisend ...
Rohmann, E., Neumann, E.
core   +1 more source

Polarizable Vanadium Dipoles Promote Water Dissociation on Vanadium‐Based Metal Organic Framework

open access: yesAdvanced Functional Materials, EarlyView.
The polarization of unpaired V 3d electrons weakens the H─O bond to improve water dissociation by the dual Vδ+:O─H and Pλ−:H─O coupling hydrogen bonds formation and relaxation. P@V‐MOF electrocatalyst shows low overpotentials (94 mV in acid, 178 mV in neutral, and 77 mV in alkaline solutions) with excellent stability for effective overall water ...
Xinjuan Liu   +13 more
wiley   +1 more source

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