Results 31 to 40 of about 267,369 (299)

A Hybrid Method for Vibration-Based Bridge Damage Detection

open access: yesRemote Sensing, 2022
Damage detection algorithms employing the conventional acceleration measurements and the associated modal features may underperform due to the limited number of sensors used in the monitoring and the smoothing effect of spline functions used to increase ...
Semih Gonen, Emrah Erduran
doaj   +1 more source

The Geometry of the Kiepert Trefoil

open access: yesMathematics, 2022
This article presents a comparative study of Kiepert’s trefoil and its related curves, combining a variety of tools from differential and algebraic geometry, integrable systems, elastica theory, and special functions.
Vladimir I. Pulov   +3 more
doaj   +1 more source

Preliminary Studies on Transition Curve Geometry: Reality and Virtual Reality

open access: yesEmerging Science Journal, 2020
The topic of transition curves is well known in track and road engineering. Over the years the need for easement between straight and curved sections in railway and road design has grown, with an important reason being increase in vehicle speed.
Tanita Fossli Brustad
doaj   +1 more source

Requirement of Cholesterol for Calcium‐Dependent Vesicle Fusion by Strengthening Synaptotagmin‐1‐Induced Membrane Bending

open access: yesAdvanced Science, 2023
Cholesterol is essential for neuronal activity and function. Cholesterol depletion in the plasma membrane impairs synaptic transmission. However, the molecular mechanisms by which cholesterol deficiency leads to defects in vesicle fusion remain poorly ...
Houda Yasmine Ali Moussa   +6 more
doaj   +1 more source

Recent Concepts for Supramolecular 2D Materials

open access: yesOrganic Materials, 2022
Bottom-up approaches are one strategy geared towards designing novel two-dimensional materials. Supramolecular polymerization has proven to be an effective way of obtaining these architectures due to the increasing control and tunability offered by ...
Lucía Gallego   +2 more
doaj   +1 more source

Low-resolution spherical harmonics models in application to quasi-quadric particle shapes

open access: yesEngineering Structures and Technologies, 2016
In this paper a numerical analysis was performed developing low-resolution spherical harmonics (LRSH) models in order to describe particle shapes. The potential of LRSH, limited by the expansion degree L ≤ 3, to describe quasi-regular particle shapes was
Urtė Radvilaitė   +4 more
doaj   +1 more source

Direct Observation of Intrinsic Spin–Layer Coupling and Robust Valley Polarization in Bilayer MoS2

open access: yesSmall Science
Herein, direct evidence of intrinsic spin–layer coupling in bilayer MoS2 through polarization‐resolved photoluminescence measurements on fully suspended samples is presented.
Yumin Sim   +5 more
doaj   +1 more source

Stress Analysis of the Effect of Additional Load on the Butt Weld of Suspended Pipeline With Variable Wall Thickness

open access: yesFrontiers in Energy Research, 2022
Under the special geological environment of the buried pipe, the ground is lost at the bottom of the pipe, which is created by various kinds of external factors.
Fang Yingchao   +6 more
doaj   +1 more source

Plasmodium falciparum gametogenesis essential protein 1 (GEP1) is a transmission‐blocking target

open access: yesFEBS Letters, EarlyView.
This study shows Plasmodium falciparum GEP1 is vital for activating sexual stages of malarial parasites even independently of a mosquito factor. Knockout parasites completely fail gamete formation even when a phosphodiesterase inhibitor is added. Two single‐nucleotide polymorphisms (V241L and S263P) are found in 12%–20% of field samples.
Frederik Huppertz   +5 more
wiley   +1 more source

Nonnegative curvature and conullity of the curvature tensor [PDF]

open access: yesAnnals of Global Analysis and Geometry, 2019
The conullity of a curvature tensor is the codimension of its kernel. We consider the cases of conullity two in any dimension and conullity three in dimension four. We show that these conditions are compatible with non-negative sectional curvature only if either the manifold is diffeomorphic to $\mathbb{R}^n$ or the universal cover is an isometric ...
openaire   +3 more sources

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