Results 71 to 80 of about 15,690,564 (314)

An Algebraic Geometric Approach to Nivat's Conjecture [PDF]

open access: yesInternational Colloquium on Automata, Languages and Programming, 2015
We study multidimensional configurations (infinite words) and subshifts of low pattern complexity using tools of algebraic geometry. We express the configuration as a multivariate formal power series over integers and investigate the setup when there is ...
J. Kari, Michal Szabados
semanticscholar   +1 more source

Time after time – circadian clocks through the lens of oscillator theory

open access: yesFEBS Letters, EarlyView.
Oscillator theory bridges physics and circadian biology. Damped oscillators require external drivers, while limit cycles emerge from delayed feedback and nonlinearities. Coupling enables tissue‐level coherence, and entrainment aligns internal clocks with environmental cues.
Marta del Olmo   +2 more
wiley   +1 more source

Simplifying Implant Planning and Placement in the Fully Edentulous Arch With In‐Office Guide Fabrication

open access: yesClinical Case Reports
A geometric approach is presented that allows in‐office planning with linear and angle corrections and surgical guide fabrication, simplifying the process when treating a fully edentulous arch.
Sean W. Meitner   +2 more
doaj   +1 more source

Geometric Approach to Lyapunov Analysis in Hamiltonian Dynamics [PDF]

open access: yes, 2001
As is widely recognized in Lyapunov analysis, linearized Hamilton's equations of motion have two marginal directions for which the Lyapunov exponents vanish.
C. P. Ong   +22 more
core   +3 more sources

Geometrical approach to tumor growth [PDF]

open access: yesPhysical Review E, 2006
Tumor growth has a number of features in common with a physical process known as molecular beam epitaxy. Both growth processes are characterized by the constraint of growth development to the body border, and surface diffusion of cells/particles at the growing edge.
openaire   +3 more sources

Cell wall target fragment discovery using a low‐cost, minimal fragment library

open access: yesFEBS Letters, EarlyView.
LoCoFrag100 is a fragment library made up of 100 different compounds. Similarity between the fragments is minimized and 10 different fragments are mixed into a single cocktail, which is soaked to protein crystals. These crystals are analysed by X‐ray crystallography, revealing the binding modes of the bound fragment ligands.
Kaizhou Yan   +5 more
wiley   +1 more source

URBANISATION AND 3D SPATIAL MODELLING- A GEOMETRIC APPROACH [PDF]

open access: yesISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2013
Urbanisation creates immense competition for space, this may be attributed to an increase in population owing to domestic and external tourism. Most cities are constantly exploring all avenues in maximising its limited space.
E. E. Duncan, A. Abdul Rahman
doaj   +1 more source

The (Glg)ABCs of cyanobacteria: modelling of glycogen synthesis and functional divergence of glycogen synthases in Synechocystis sp. PCC 6803

open access: yesFEBS Letters, EarlyView.
We reconstituted Synechocystis glycogen synthesis in vitro from purified enzymes and showed that two GlgA isoenzymes produce glycogen with different architectures: GlgA1 yields denser, highly branched glycogen, whereas GlgA2 synthesizes longer, less‐branched chains.
Kenric Lee   +3 more
wiley   +1 more source

Anomalous diffusion of cosmic rays: A geometric approach

open access: yesAIP Advances, 2021
In this work, we analyze the process leading to the occurrence of anomalous transport phenomena associated with galactic cosmic rays propagating through the interstellar space.
Salvatore Buonocore, Mihir Sen
doaj   +1 more source

Geometric approach to the dynamic glass transition

open access: yes, 2002
We numerically study the potential energy landscape of a fragile glassy system and find that the dynamic crossover corresponding to the glass transition is actually the effect of an underlying geometric transition caused by a qualitative change in the ...
A. Cavagna   +24 more
core   +1 more source

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