Results 1 to 10 of about 826,719 (317)

Preparation and performance evaluation of electrothermal actuators using aligned carbon nanotube reinforced epoxy composites

Mechanical Engineering Journal, 2016
By using an aligned multi-walled carbon nanotube (MWCNT) reinforced epoxy composite, an electrothermal bimorph actuator was fabricated and its load and deformation capacities were investigated.
Keiichi SHIRASU, Akihiro NAKAMURA, Go YAMAMOTO, Toshio OGASAWARA, Yoshinobu SHIMAMURA, Yoku INOUE, Toshiyuki HASHIDA   +6 more
doaj   +1 more source

Analysis of the Bauschinger Effect in Cold Drawn Pearlitic Steels

Metals, 2020
Prestressing steel wires usually undergo cyclic loading in service. Therefore, it is of interest to analyse certain features of their mechanical behaviour under this type of loading, such as the Bauschinger effect (BE) or the hardening rule, that fit the
Jesús Toribio, Viktor Kharin, Francisco-Javier Ayaso, Miguel Lorenzo, Beatriz González, Juan-Carlos Matos, Leticia Aguado   +6 more
doaj   +1 more source

Validation of orthopaedic surgeons’ assessment of cognitive function in patients with acute hip fracture

BMC Musculoskeletal Disorders, 2019
Background About one fourth of patients with hip fracture have cognitive impairment. These patients are at higher risk of surgical and medical complications and are often excluded from participating in clinical research.
Målfrid Holen Kristoffersen, Eva Dybvik, Ole Martin Steihaug, Christoffer Andreas Bartz-Johannesen, Mette Irene Martinsen, Anette Hylen Ranhoff, Lars Birger Engesæter, Jan-Erik Gjertsen   +7 more
doaj   +1 more source

Impact and indenting damage of CVD-produced ZnS and ZnSe ceramics

Materials Research Express, 2020
Time series of acoustic emission pulses were excited in ductile ZnS and ZnSe ceramics either by a falling weight or by indenting the Vickers pyramid. Energy distributions in emitted acoustical emission pulses were found to be random (Poisson-like) in the
Alexandre Chmel, Anatolij Dunaev, Alfred Sinani, Igor’ Shcherbakov   +3 more
doaj   +1 more source

Reverse Ballistic Impact Studies of Thin Plate Perforation

Engineering Transactions, 2014
Full-scale ballistic experiments using tungsten rods and rolled homogeneous armour (RHA) steel plates are expensive to perform. For this reason, a study has been performed into the possibility of using less expensive, more easily available metals in ...
L. C. FORDE, W. G. PROUD, S. M. WALLEY, P. D. CHURCH, R. CORNISH   +4 more
doaj   +1 more source

The effect of aquatic exercise on bone mineral density in older adults. A systematic review and meta-analysis

Frontiers in Physiology, 2023
Introduction: Aquatic or water-based exercise is a very popular type of exercise in particular for people with physical limitations, joint problems and fear of falling.
Eileen Schinzel, Stephanie Kast, Stephanie Kast, Matthias Kohl, Matthias Kohl, Simon von Stengel, Simon von Stengel, Franz Jakob, Franz Jakob, Katharina Kerschan-Schindl, Katharina Kerschan-Schindl, Bernd Kladny, Bernd Kladny, Uwe Lange, Uwe Lange, Stefan Peters, Stefan Peters, Friederike Thomasius, Friederike Thomasius, Friederike Thomasius, Jürgen Clausen, Jürgen Clausen, Michael Uder, Michael Uder, Wolfgang Kemmler, Wolfgang Kemmler, Wolfgang Kemmler   +26 more
doaj   +1 more source

A novel n-type semiconducting biomaterial

Scientific Reports, 2022
There has been no research conducted thus far on the semiconducting behaviour of biomaterials. In this study, we present an n-type semiconducting biomaterial composed of amorphous kenaf cellulose fibre (AKCF) paper with a voltage-controlled N-type ...
Mikio Fukuhara, Tomonori Yokotsuka, Toshiyuki Hashida, Fumio Ogawa, Tadashi Sakamoto, Mitsuhiro Takeda, Susumu Arai   +6 more
doaj   +1 more source

Influence of the Straining Path during Cold Drawing on the Hydrogen Embrittlement of Prestressing Steel Wires

Metals, 2023
Cold drawing is a commonly used technique for manufacturing the prestressing steel wires used as structural elements in prestressed concrete structures.
Jesús Toribio, Miguel Lorenzo
doaj   +1 more source

The Clinical Frailty Scale is a valid and independent predictor of one-year survival in patients sustaining a hip fracture: scottish Hip Fracture Audit data from 8,092 patients

Bone & Joint Open
Aims: Hip fracture patients have a significant mortality risk. Risk stratification tools are important in guiding management and family discussions.
Matthew J. Kennedy, Rose S. Penfold, Lorraine Donaldson, Andrew J. Hall, Martin J. Davison, Alasdair M. J. MacLullich, Phil Walmsley, Nick D. Clement, Jon V. Clarke   +8 more
doaj   +1 more source

Influence of Loading Rate on the Hydrogen-Assisted Micro-Damage in Bluntly Notched Samples of Pearlitic Steel

Metals, 2016
The influence of loading rate (crosshead speed) on the fracture process of bluntly notched samples of pearlitic steel under hydrogen environment is analyzed in this paper.
Jesús Toribio, Diego Vergara, Miguel Lorenzo   +2 more
doaj   +1 more source