Results 61 to 70 of about 3,820,828 (296)
Performance Analysis of Gear Honing with Modified TI-Hourglass Worm Honing Wheel
Jixie chuandong, 2015 According to the theories of differential geometry and gear meshing,the basic equations for involute helicoids,meshinglines and meshing boundary lines are deduced.Then using MATLAB program,the contact lines and meshing boundary are drawn.The results show
Cai Weili, Zhang Mandong
doaj
Scale Dependence of Contact Line Computations [PDF]
Mathematical Modelling of Natural Phenomena, 2008 Summary: The shape and velocity of a sliding droplet are computed by solving the Navier-Stokes equation with free interface boundary conditions. The Galerkin finite element method is implemented in a 2D computation domain discretized using an unstructured mesh with triangular elements.
Weinstein, O., Pismen, L. M.
openaire +2 more sources
Liver organoids: modelling complexity in homeostasis and disease
FEBS Letters, EarlyView.Studying liver in vitro has been challenging because simple 2D cell cultures fail to capture liver's cellular and architectural complexity. To bridge this gap, scientists increasingly use organoids, 3D liver models which better mimic liver composition and function. This review examines recent advances in liver organoid complexity and realism, discusses
Anna M. Dowbaj, Meritxell Huch
wiley +1 more source
Jixie chuandong, 2009 The tooth-surfaces of modified planar double-enveloping worm wheel were established with the theory of spatial engagement. The contact lines were analyzed, and the contact patterns were classified with the different parameters series of center distance ...
张跃敏, 王小林, 谢刚
doaj
Malignant transformation of non-neoplastic Barrett's epithelial cells through well-defined genetic manipulations. [PDF]
PLoS ONE, 2010 Human Barrett's cancer cell lines have numerous, poorly-characterized genetic abnormalities and, consequently, those lines have limited utility as models for studying the early molecular events in carcinogenesis.
Xi Zhang +9 more
doaj +1 more source
The microbiome in human skin aging
FEBS Letters, EarlyView.Age‐related skin changes encompass the well‐known visible phenotypic alterations, together with microbiome dysbiosis and a series of molecular aging hallmarks. These hallmarks characterize not only a fully stablished aged phenotype but also the skin aging process itself.
Manuel Huerta Arana +3 more
wiley +1 more source
Structural and biochemical analysis of a B12 superbinder
FEBS Letters, EarlyView.BtuG proteins are vitamin B12 scavengers in Bacteroides thetaiotaomicron, a dominant human gut bacterium. We present crystal structures of three BtuG homologs bound to cobalamin and its precursor cobinamide, revealing picomolar binding affinities, among the highest known for any natural protein.
Jose M. Martinez Felices +3 more
wiley +1 more source
Wear Analysis of Catenary Dropper Lines Due to Discontinuous Contact
Applied SciencesThe service reliability of critical catenary components is strongly influenced by damage evolution at dynamic contact interfaces. In this study, a numerical framework is developed to simulate the dynamic contact behavior and wear progression of catenary ...
Cong Chen +7 more
doaj +1 more source
Open Engineering, 2017 In this article, a mathematical description of tooth flank surface of the globoidal worm and worm wheel generated by the hourglass worm hob with straight tooth axial profile is presented. The kinematic system of globoidal worm gear is shown. The equation
Połowniak Piotr, Sobolak Mariusz
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Coexistence of Pinning and Moving on a Contact Line [PDF]
Langmuir, 2017 Textured surfaces are instrumental in water repellency or fluid wicking applications, where the pinning and depinning of the liquid-gas interface plays an important role. Previous work showed that a contact line can exhibit nonuniform behavior due to heterogeneities in surface chemistry or roughness.
Zhengmao Lu +4 more
openaire +3 more sources