نتایج جستجو برای: biophysical variables

تعداد نتایج: 336895  

Journal: :IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing 2022

Monitoring crop development is of crucial importance to ensure sustainable management practices while promoting efficient land use. The ability satellite remote sensing data cover large areas offers a robust tool aid this task. In paper, we propose filtering framework which uses Gaussian Process-based dynamic and observation models, an unscented Kalman filter (GP-UKF) fusion multitemporal SENTI...

Journal: :Remote Sensing 2012
David M. Atkinson Paul M. Treitz

As a result of the warming observed at high latitudes, there is significant potential for the balance of ecosystem processes to change, i.e., the balance between carbon sequestration and respiration may be altered, giving rise to the release of soil carbon through elevated ecosystem respiration. Gross ecosystem productivity and ecosystem respiration vary in relation to the pattern of vegetation...

Journal: :Neuro-oncology 2022

Abstract This study introduces a multicontraction microfluidic channel that can differentiate glioma cells from normal glio cells. As pass through successive constriction channels, the incremental velocity and varying size profiles of will be collected, reflecting their biophysical properties. The data high-dimensional variables were analyzed , including cell sizes, velocities, increments. pred...

Journal: :Annual review of biochemistry 2008
Jeffrey R Moffitt Yann R Chemla Steven B Smith Carlos Bustamante

It has been over 20 years since the pioneering work of Arthur Ashkin, and in the intervening years, the field of optical tweezers has grown tremendously. Optical tweezers are now being used in the investigation of an increasing number of biochemical and biophysical processes, from the basic mechanical properties of biological polymers to the multitude of molecular machines that drive the intern...

Journal: :Physical chemistry chemical physics : PCCP 2016
Diego Krapf Grace Campagnola Kanti Nepal Olve B Peersen

Diffusion at solid-liquid interfaces is crucial in many technological and biophysical processes. Although its behavior seems to be deceivingly simple, recent studies showing passive superdiffusive transport suggest that diffusion on surfaces may hide rich complexities. In particular, bulk-mediated diffusion occurs when molecules are transiently released from the surface to perform three-dimensi...

Journal: :Journal of the Royal Society, Interface 2011
Mateusz M Plucinski Calistus N Ngonghala Matthew H Bonds

The persistence of extreme poverty is increasingly attributed to dynamic interactions between biophysical processes and economics, though there remains a dearth of integrated theoretical frameworks that can inform policy. Here, we present a stochastic model of disease-driven poverty traps. Whereas deterministic models can result in poverty traps that can only be broken by substantial external c...

Journal: :Evolution; international journal of organic evolution 2012
Arley Camargo Mariana Morando Luciano J Avila Jack W Sites

Species delimitation is a major research focus in evolutionary biology because accurate species boundaries are a prerequisite for the study of speciation. New species delimitation methods (SDMs) can accommodate nonmonophyletic species and gene tree discordance as a result of incomplete lineage sorting via the coalescent model, but do not explicitly accommodate gene flow after divergence. Approx...

Journal: :Physical review. E, Statistical, nonlinear, and soft matter physics 2001
A Fuliński P F Góra

We discuss new examples of the constructive role of environmental fluctuations in biophysical processes, namely quantitative enhancement and qualitative sharpening of the outgoing signal in the intercellular signal transduction, e.g., in the synaptic links. An experimental check in a chemical flow reactor is suggested.

2018
R Nolasco I Gomes L Peteiro R Albuquerque T Luna J Dubert S E Swearer H Queiroga

Marine larval dispersal is a complex biophysical process that depends on the effects of species biology and oceanography, leading to logistical difficulties in estimating connectivity among populations of marine animals with biphasic life cycles. To address this challenge, the application of multiple methodological approaches has been advocated, in order to increase confidence in estimates of p...

2015
Peter G. Adams Kirstie L. Swingle Walter F. Paxton John J. Nogan Loreen R. Stromberg Millicent A. Firestone Harshini Mukundan Gabriel A. Montaño

Supported lipid bilayers have proven effective as model membranes for investigating biophysical processes and in development of sensor and array technologies. The ability to modify lipid bilayers after their formation and in situ could greatly advance membrane technologies, but is difficult via current state-of-the-art technologies. Here we demonstrate a novel method that allows the controlled ...

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