Results 111 to 120 of about 7,539,459 (382)

Cartan geometry of spacetimes with a nonconstant cosmological function $\Lambda$

open access: yes, 2014
We present the geometry of spacetimes that are tangentially approximated by de Sitter spaces whose cosmological constants vary over spacetime. Cartan geometry provides one with the tools to describe manifolds that reduce to a homogeneous Klein space at ...
Jennen, Hendrik
core   +1 more source

On the geometry of Hermitian one-point codes

open access: yesJournal of Algebra, 2014
In this paper we study the algebraic-geometry of any one-point code on the Hermitian curve. Moreover, we characterize the minimum-weight codewords of some of their dual codes and describe many their small-weight codewords.
Ballico, Edoardo, A. Ravagnani
openaire   +4 more sources

Using a Supramolecular Approach to Engineer Modular Hydrogel Platforms for Culturing Protoplasts – from General Tissue Engineering to Cellular Agriculture

open access: yesAdvanced Biology, EarlyView.
Using supramolecular monomers, various hydrogel culture systems were formulated to culture protoplasts; including 2D, 2.5D, and 3D hydrogels. Depending on the culture platform, bioactive functionalization led to protoplast enlargement (2D and 2.5D) or plasmolysis (3D). This work shows the potential to modularly engineer synthetic platforms for cellular
Maritza M. Rovers   +3 more
wiley   +1 more source

Microphysiological Glomerular Filtration Barriers: Current Insights, Innovations, and Future Applications

open access: yesAdvanced Biology, EarlyView.
The glomerular filtration barrier (GFB) is the first step of blood filtration by the kidneys. The concerning increase of kidney diseases makes the development of new models essential. In this context, microphysiological glomerular filtration barriers focus on closely reproducing the physiological architecture of the in vivo GFB: podocytes, glomerular ...
Manon Miran   +5 more
wiley   +1 more source

A Density-Aware Point Cloud Geometry Compression Leveraging Cluster- Centric Processing

open access: yesIEEE Access
Recent years have encountered a noticeable expansion of point cloud-based 3D applications that compels the necessity of high-efficiency point cloud compression.
Fariha Afsana   +3 more
doaj   +1 more source

Geometry, mechanics and electronics of singular structures and wrinkles in graphene

open access: yes, 2010
As the thinnest atomic membrane, graphene presents an opportunity to combine geometry, elasticity and electronics at the limits of their validity. The availability of reliable atomistic potentials for graphene allows unprecedented precise simulations of ...
Liang, H. Y.   +3 more
core   +1 more source

On the geometry of the sequence of infinitely near points

open access: yesManuscripta Mathematica, 1991
Let \(X\) be a smooth variety over an algebraically closed field \(k\) of characteristic zero, \(P_ 0\in X\) a closed point and \(E_ 1\) the exceptional divisor of the blowing-up of \(X\) with center \(P_ 0\). A closed point \(P_ 1\in E_ 1\) is said to be an infinitely near point (shortly i.n.p.) of \(P_ 0\). A sequence of i.n.p.
Castellanos, Julio, Nunez, Ana
openaire   +3 more sources

Hydrogel‐Based Capacitive Sensor Model for Ammonium Monitoring in Aquaculture

open access: yesAdvanced Engineering Materials, EarlyView.
Traditional techniques for monitoring aquaculture water quality, particularly ammonium levels, harm fish. This work presents a novel capacitive sensor with an ionic hydrogel transducer to monitor ammonium concentration in real time based on the ammonium‐induced hydrogel dissociation and osmotic pressure. Monitoring aquaculture water quality, especially
Mohammad Mirzaee   +3 more
wiley   +1 more source

Two Points of the Boundary of Toric Geometry [PDF]

open access: yes, 2018
This note presents two observations which have in common that they lie at the boundary of toric geometry. The first one because it concerns the deformation of affine toric varieties into non toric germs in order to understand how to avoid some ramification problems arising in the study of local uniformization in positive characteristic, and the second ...
openaire   +4 more sources

Soft‐Layered Composites with Wrinkling‐Activated Multi‐Linear Elastic Behavior, Stress Mitigation, and Enhanced Strain Energy Storage

open access: yesAdvanced Engineering Materials, EarlyView.
In this study, exciting new bi‐/multi‐linear elastic behavior of soft elastic composites that accompany the activation of wrinkling in the embedded interfacial layers is analyzed. The new features and performance of these composite materials, including dramatic enhancements in energy storage, can be tailored by the concentration of interfacial layers ...
Narges Kaynia   +2 more
wiley   +1 more source

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