Results 121 to 130 of about 7,600,413 (382)
Two Points of the Boundary of Toric Geometry [PDF]
, 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
On the geometry of the sequence of infinitely near points
Manuscripta 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
Advanced Biology, EarlyView.Infrared (IR) light evokes distinct calcium and water transport responses in astrocytes, depending on stimulation duration and protocol. This study uses widefield imaging and pharmacology to reveal differential engagement of astroglial signaling pathways.
Wilson R. Adams +7 more
wiley +1 more source
Advanced Biology, EarlyView.The unrolling of the peltate leaves in Syngonium podophyllum is analyzed and quantified (left‐hand side to center). These measurements serve to verify a mathematical model for leaf unrolling based on the model used in Schmidt (2007). An additional formula for obtaining a layer mismatch from a prescribed radius is derived.
Michelle Modert +4 more
wiley +1 more source
Cartan geometry of spacetimes with a nonconstant cosmological function $\Lambda$
, 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
Hydrogel‐Based Capacitive Sensor Model for Ammonium Monitoring in Aquaculture
Advanced 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
Effects of Temporal Sampling Interval on the Moon-Based Earth Observation Geometry
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2020 The effects of temporal sampling interval on the moon-based earth observation geometry are analyzed in this study based on three observation angles, namely viewing zenith angle, solar zenith angle, and relative azimuth angle. According to the definitions
Hanlin Ye +3 more
doaj +1 more source
Prediction of performance of centrifugal pumps during starts under pressure [PDF]
, 1969 Method which calculates start-up characteristics of centrifugal pumps reveals a capacity to predict pressure drop characteristics of pumps with vaned diffusers. Calculations are based on pump geometry, design-point flow, speed, and pressure rise, and the
Rostafinski, W.
core +1 more source
Advanced 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
The sphere and the cut locus at a tangency point in two-dimensional almost-Riemannian geometry
, 2010 We study the tangential case in 2-dimensional almost-Riemannian geometry. We analyse the connection with the Martinet case in sub-Riemannian geometry. We compute estimations of the exponential map which allow us to describe the conjugate locus and the ...
Bonnard, Bernard +3 more
core +1 more source