Results 31 to 40 of about 1,074,944 (261)

Effects of rotor separation on the axial descent performance of dual-rotor configurations

open access: yesFlow, 2023
Rotorcraft can encounter highly unsteady flow when descending at a steep angle, leading to a flow condition called vortex ring state, which is associated with strong oscillatory airloads and substantial losses in mean rotor thrust.
Marcel Veismann   +2 more
doaj   +1 more source

Enteropathogenic E. coli shows delayed attachment and host response in human jejunum organoid‐derived monolayers compared to HeLa cells

open access: yesFEBS Letters, EarlyView.
Enteropathogenic E. coli (EPEC) infects the human intestinal epithelium, resulting in severe illness and diarrhoea. In this study, we compared the infection of cancer‐derived cell lines with human organoid‐derived models of the small intestine. We observed a delayed in attachment, inflammation and cell death on primary cells, indicating that host ...
Mastura Neyazi   +5 more
wiley   +1 more source

Mixing intensification in Carreau–Yasuda fluid promoted by magnetohydrodynamic flow manipulation - a numerical study

open access: yesFlow
In this work, three-dimensional numerical investigations into flow manipulation have been conducted using the principles of magnetohydrodynamics, followed by the analysis of the phenomenon of species mixing in a Carreau–Yasuda-type fluid.
Chitradittya Barman, Aditya Bandopadhyay
doaj   +1 more source

Manipulation of single sub-femtolitre droplets via partial coalescence in a direct-current electric field

open access: yesFlow, 2021
It is demonstrated how aqueous droplets with volumes down to the sub-femtolitre range can be manipulated, including the withdrawal of minute samples from the droplets.
Mostafa Shojaeian, Steffen Hardt
doaj   +1 more source

Fracture Mechanics Investigation of Structures with Defects [PDF]

open access: yes, 2013
Fracture mechanics plays an important role in the material science, structure design and industrial production due to the failure of materials and structures are paid high attention in human activities.
Li, Yong <1985>
core   +1 more source

Calpain small subunit homodimerization is robust and calcium‐independent

open access: yesFEBS 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   +4 more
wiley   +1 more source

Symbolic regression modelling of the linear growth rates of stationary cross-flow instabilities

open access: yesFlow
Accurately predicting the growth rates of stationary cross-flow instabilities is crucial for understanding transition mechanisms in swept-wing configurations, which can significantly impact aerodynamic performance.
Lucas Pascal
doaj   +1 more source

Emergence of in-line swimming patterns in zebrafish pairs

open access: yesFlow, 2021
Mathematical models promise new insights into the mechanisms underlying the emergence of collective behaviour in fish. Here, we establish a mathematical model to examine collective behaviour of zebrafish, a popular animal species in preclinical research.
Maurizio Porfiri   +3 more
doaj   +1 more source

Mesofracture mechanics: a necessary link

open access: yes, 2001
Classical fracture mechanics is based on the premise that small scale features could be averaged to give a larger scale property such that the assumption of material homogeneity would hold.
Sih, GC (reprint author), Xian Jiaotong Univ, Sch Adv Sci & Technol, Xian 710049, Shaanxi, Peoples R China.   +2 more
core   +1 more source

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

open access: yesFEBS 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   +5 more
wiley   +1 more source

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