Results 41 to 50 of about 3,944,713 (309)

Research progress on the gingival papilla reconstruction

open access: yes口腔疾病防治, 2018
The morphology of the gingival papilla plays an important role in the aesthetics of oral soft tissue. Gingi⁃ val papilla recession forms a visible black triangle, causing a series of problems such as aesthetic defects, pronunciation disorders and food ...
HU Yuanyuan, ZONG Juanjuan
doaj   +1 more source

Elastocapillarity at Cell-Matrix Contacts

open access: yesPhysical Review X, 2022
At cell-matrix contacts, an elastocapillary effect arises in addition to active cell traction. The coexistence of active extracellular traction and other interfacial forces at the contacts blurs their distinctive roles in tissue morphogenesis, wound ...
Xuechen Shi   +5 more
doaj   +1 more source

Rational construction of triangle-like nickel-cobalt bimetallic metal-organic framework nanosheets arrays as battery-type electrodes for hybrid supercapacitors.

open access: yesJournal of Colloid and Interface Science, 2019
Reasonably designing self-supported metal-organic framework (MOF) nanoarrays is profound for applications in energy storage and conversion. Herein, we construct a triangle-like nickel-cobalt bimetallic metal-organic framework nanosheet array on nickel ...
Juan Wang   +5 more
semanticscholar   +1 more source

Geometric Interpretation of Surface Tension Equilibrium in Superhydrophobic Systems

open access: yesEntropy, 2015
Surface tension and surface energy are closely related, although not identical concepts. Surface tension is a generalized force; unlike a conventional mechanical force, it is not applied to any particular body or point.
Michael Nosonovsky, Rahul Ramachandran
doaj   +1 more source

Model test and particle flow numerical simulation of soil arching effect for unsaturated sandy soil tunnel

open access: yesRock and Soil Mechanics, 2021
The apparent cohesion caused by matric suction makes the mechanical properties of unsaturated sand significantly different from those of dry sand. In order to study the soil arching effect of the unsaturated sand tunnel, trapdoor tests with different ...
CUI Peng-bo   +4 more
doaj   +1 more source

Determination of forces in the elements of the brake rigging of bogies of freight cars [PDF]

open access: yesE3S Web of Conferences, 2020
The article presents the results of studies the purpose of which was solving the problem of deceleration of abnormal wear of brake pads in freight cars of Ukrzaliznytsia JSC.
Elyazov İsrail   +3 more
doaj   +1 more source

Identification of (20R)‐protopanaxadiol from Panax ginseng as a novel anti‐SARS‐CoV‐2 compound

open access: yesFEBS Open Bio, EarlyView.
We established a noninfectious BAC‐based SARS‐CoV‐2 replicon that enables antiviral screening under BSL‐2 conditions. Using this platform, we screened 373 food‐derived compounds and identified (20R)‐protopanaxadiol from Panax ginseng as a novel inhibitor of SARS‐CoV‐2 RNA replication, highlighting the value of safe replicon systems for antiviral ...
Midori Takeda   +4 more
wiley   +1 more source

Source and Accumulation Analysis of Deviation during Multi-Level Assembly of an Aircraft Rear Fuselage Frame

open access: yesApplied Sciences, 2023
During the production process of aircraft assembly, weakly rigid parts are gradually assembled into rigid support structures in the aircraft skeleton through several assembly stations.
Yaohui Zheng   +3 more
doaj   +1 more source

Investigation of enhanced membrane distillation desalination efficiency by inserting triangle-shaped turbulence promoters

open access: yesDesalination and Water Treatment
In this article, five different isosceles triangle-shaped turbulence promoters with different vertex angles and three different arrangement schemes were designed and applied to plate-and-frame membrane modules for the study of desalination efficiency ...
Long Chen, Yukang Zhou, Shiji Zheng
doaj   +1 more source

Planar Graphs as VPG-Graphs

open access: yesJournal of Graph Algorithms and Applications, 2013
A graph is Bk-VPG when it has an intersection representation by paths in a rectangular grid with at most k bends (turns). It is known that all planar graphs are B3-VPG and this was conjectured to be tight.
Steven Chaplick, Torsten Ueckerdt
doaj   +1 more source

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