Results 31 to 40 of about 1,786,400 (346)

Inconsistencies of interannual variability and trends in long-term satellite leaf area index products [PDF]

open access: yes, 2017
Understanding the long-term performance of global satellite leaf area index (LAI) products is important for global change research. However, few effort has been devoted to evaluating the long-term time-series consistencies of LAI products.
Claverie, Martin   +5 more
core   +1 more source

Egg-laying [PDF]

open access: yesWormBook, 2005
C. elegans hermaphrodites are self-fertile, and their rate and temporal pattern of egg-laying are modulated by diverse environmental cues. Egg-laying behavior has served as an important phenotypic assay for the genetic dissection of neuronal signal transduction mechanisms. This chapter reviews our current understanding of the neuronal and neurochemical
openaire   +2 more sources

Inconsistent changes in NPP and LAI determined from the parabolic LAI versus NPP relationship

open access: yes, 2021
Rapidly altering vegetation dynamics, is an aspect of global environmental change which has consequences for ecosystem structure, function, and the provision of ecosystem services.
Ning Pan   +4 more
semanticscholar   +1 more source

Interannual variability in North American grassland biomass/productivity detected by SeaWinds scatterometer backscatter [PDF]

open access: yes, 2005
We analyzed 2000–2004 growing-season SeaWinds Ku-band microwave backscatter and MODIS leaf area index (LAI) data over North America. Large anomalies in mid-growing-season mean backscatter and LAI, relative to 5-year mean values, occurred primarily in the
Fahnestock, Mark   +4 more
core   +2 more sources

Estimation of LAI with the LiDAR Technology: A Review

open access: yesRemote Sensing, 2020
Leaf area index (LAI) is an important vegetation parameter. Active light detection and ranging (LiDAR) technology has been widely used to estimate vegetation LAI.
Yao Wang, H. Fang
semanticscholar   +1 more source

Joint Retrieval of Growing Season Corn Canopy LAI and Leaf Chlorophyll Content by Fusing Sentinel-2 and MODIS Images

open access: yesRemote Sensing, 2019
Continuous and accurate estimates of crop canopy leaf area index (LAI) and chlorophyll content are of great importance for crop growth monitoring. These estimates can be useful for precision agricultural management and agricultural planning.
Wei Su   +7 more
doaj   +1 more source

Bifurcation Analysis of a Stochastically Driven Limit Cycle [PDF]

open access: yes, 2018
We establish the existence of a bifurcation from an attractive random equilibrium to shear-induced chaos for a stochastically driven limit cycle, indicated by a change of sign of the first Lyapunov exponent.
Engel, Maximilian   +2 more
core   +2 more sources

Spatially and Temporally Continuous Leaf Area Index Mapping for Crops through Assimilation of Multi-resolution Satellite Data

open access: yesRemote Sensing, 2019
As a key parameter that represents the structural characteristics and biophysical changes of crop canopy, the leaf area index (LAI) plays a significant role in monitoring crop growth and mapping yield.
Huaan Jin   +5 more
doaj   +1 more source

Optimal Exploitation of the Sentinel-2 Spectral Capabilities for Crop Leaf Area Index Mapping [PDF]

open access: yes, 2012
The continuously increasing demand of accurate quantitative high quality information on land surface properties will be faced by a new generation of environmental Earth observation (EO) missions.
D'Urso, Guido   +4 more
core   +2 more sources

Protocol for measuring weak cellular traction forces using well-controlled ultra-soft polyacrylamide gels

open access: yesSTAR Protocols, 2022
Summary: Traction force microscopy (TFM) is a popular technique for studying cellular stresses; however, the reproducible fabrication of ultrasoft substrates for the reliable detection of weak cellular stresses (below 100 Pa) remains a challenge.
Farah Mustapha   +2 more
doaj   +1 more source

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