Results 31 to 40 of about 50,323 (213)

The accuracy and effectiveness of automatic pedicle screw trajectory planning based on computer tomography values: an in vitro osteoporosis model study

BMC Musculoskeletal Disorders, 2022
Background Pedicle screw placement in patients with osteoporosis is a serious clinical challenge. The bone mineral density (BMD) of the screw trajectory has been positively correlated with the screw pull-out force, while the computer tomography (CT ...
Jia Bin Liu, Rui Zuo, Wen Jie Zheng, Chang Qing Li, Chao Zhang, Yue Zhou   +5 more
doaj   +1 more source

Comparative Pull-Out Performances of Cephalomedullary Nail with Screw and Helical Blade According to Femur Bone Densities

Applied Sciences, 2021
This paper mainly examines the fixation performances of the cephalomedullary nail for the incidence of intertrochanteric (IT) fracture to guide the appropriate fixations with respect to the bone density in terms of a biomechanical perspective.
Young-Chang Park, Dong-Sik Chae, Kyung-Yil Kang, Yao Ding, Sung-Jun Park, Jonghun Yoon   +5 more
doaj   +1 more source

Calpain small subunit homodimerization is robust and calcium‐independent

FEBS Letters, EarlyView.
Calpains dimerize via penta‐EF‐hand (PEF) domains. Using single‐molecule force spectroscopy, we measured the strength and kinetics of PEF–PEF homodimer binding. The interaction is robust, shows a transient conformational step before dissociation, and remains largely insensitive to Ca2+.
Nesha May O. Andoy, Trina Dykstra‐MacPherson, Mathias A. Bell, Peter L. Davies, Ruby May A. Sullan   +4 more
wiley   +1 more source

Research on the durability performance of CFRP bonded anchors subjected to coupled multi-factor conditions

Case Studies in Construction Materials
Large carbon fiber reinforced polymer (CFRP) tendon anchors are bonded anchors, which have durability issues due to degradation of the bond between the anchor and the anchor interface.
Yuting Luo, Haozhe Jiang, Shufeng Guo, Minzhe Wang, Ping Zhuge   +4 more
doaj   +1 more source

Simulation test study on fatigue characteristics of circuit breaker insulation pull rod

IET Science, Measurement & Technology, 2022
The insulation pull rod is the main transmission mechanism of the circuit breaker. In addition to strong electrical performance, it should also have strong mechanical properties.
Liu Peng, Wu Qingsong, Wang Haoran, Cui Boyuan, Wu Zhehua, Chen Yun, Yang Yong, Peng Zongren   +7 more
doaj   +1 more source

Structural insights into an engineered feruloyl esterase with improved MHET degrading properties

FEBS Letters, EarlyView.
A feruloyl esterase was engineered to mimic key features of MHETase, enhancing the degradation of PET oligomers. Structural and computational analysis reveal how a point mutation stabilizes the active site and reshapes the binding cleft, expading substrate scope.
Panagiota Karampa, Konstantinos Makryniotis, Theofani‐Iosifina Sousani, Evangelos Topakas, Vangelis Daskalakis, Maria Dimarogona   +5 more
wiley   +1 more source

Hyperosmotic stress induces PARP1‐mediated HPF1‐dependent mono(ADP‐ribosyl)ation

FEBS Letters, EarlyView.
Sorbitol‐induced hyperosmotic stress rapidly induces reversible mono(ADP‐ribosyl)ation (MARylation) on PARP1 without the signs of genotoxic signaling. We show that PARP1 autoMARylation is HPF1 dependent and forms hydroxylamine‐resistant O‐glycosidic linkages.
Anna Georgina Kopasz, Mihály Mérey, Rebeka Vásárhelyi, Ramóna Pék, Victor Imburchia, László Henn, Adrián Kószó, Nicholas D. Lakin, Ivan Ahel, Sébastien Huet, Ágnes Czibula, Gyula Timinszky   +11 more
wiley   +1 more source

Pull-out mechanism of continuous ball shape anchors in transparent soil

Yantu gongcheng xuebao, 2017
A physical modelling system is developed to study the pull-out mechanism of embedded soil anchors using transparent soil and particle image velocimetry (PIV). In the system, two different continuous ball shape anchors are set in the experiment to observe
XIA Yuan-you1 , CHEN Chen 1, NI Qing 2
doaj   +1 more source

Organizing the interface—Plasma membrane architecture and receptor dynamics in virus‐cell interactions

FEBS Letters, EarlyView.
Plasma membranes contain dynamic nanoscale domains that organize lipids and receptors. Because viruses operate at similar scales, this architecture shapes early infection steps, including attachment, receptor engagement, and entry. Using influenza A virus and HIV‐1 as examples, we highlight how receptor nanoclusters, multivalent glycan interactions ...
Jan Schlegel, Christian Sieben
wiley   +1 more source

A biomechanical study of locking spongious screws and failure rates are higher than expected in plate fixation

Scientific Reports
Locking plates have a rapidly growing process especially in the past decades and results are satisfactory especially in the osteoporotic bones compared to non-locking compression plates. There are many forms of failure in the fracture fixation of locking
Fatih Parmaksizoglu, Onur Cetin, Sinan Kilic, Yener Ince   +3 more
doaj   +1 more source