Results 101 to 110 of about 5,178,293 (354)

Detection and Analysis of Chili Pepper Root Rot by Hyperspectral Imaging Technology

open access: yesAgronomy
The objective is to develop a portable device capable of promptly identifying root rot in the field. This study employs hyperspectral imaging technology to detect root rot by analyzing spectral variations in chili pepper leaves during times of health ...
Yuanyuan Shao   +7 more
doaj   +1 more source

Spectral analysis of multi-year GNSS code multipath time-series

open access: yesBudownictwo i Architektura, 2020
In the presented study multi-year time series of changes in the L1 pseudo-range multipath are analysed. Data from 8 stations of the EUREF Permanent Network (EPN) were used in the study.
Jacek Kudrys
doaj   +1 more source

Witten index, spectral shift function and spectral flow

open access: yes, 2017
The notion of spectral flow has been introduced by Atiyah and Lustzig and is an important tool in geometry. In 1976 Atiyah, Patodi and Singer suggested that a path of elliptic operators on odd dimensional compact manifolds the spectral flow can be computed via the Fredholm index of so-called `suspension', which is a first order elliptic operator on a ...
openaire   +2 more sources

β‐TrCP overexpression enhances cisplatin sensitivity by depleting BRCA1

open access: yesMolecular Oncology, EarlyView.
Low levels of β‐TrCP (Panel A) allow the accumulation of BRCA1 and CtIP, which facilitate the repair of cisplatin‐induced DNA damage via homologous recombination (HR) and promote tumor cell survival. In contrast, high β‐TrCP expression (Panel B) leads to BRCA1 and CtIP degradation, impairing HR repair, resulting in persistent DNA damage and apoptosis ...
Rocío Jiménez‐Guerrero   +8 more
wiley   +1 more source

Estimating the Heavy Metal Contents in Entisols from a Mining Area Based on Improved Spectral Indices and Catboost

open access: yesSensors
In the study of the inversion of soil multi-species heavy metal element concentrations using hyperspectral techniques, the selection of feature bands is very important.
Pingjie Fu   +6 more
doaj   +1 more source

Beyond NDVI- Spectral indexing of biomass

open access: yesJournal of Agricultural Informatics, 2019
The use of both terrestrial and satellite sensors often lacks the specific knowledge that makes them more effective. There are many reasons for this, one of them is agricultural digitalization to facilitate data availability and shortened automatic spectral indexing, but interpretation requires special remote sensing and agricultural knowledge.
Tamás, János   +2 more
openaire   +2 more sources

SPATIAL VARIATIONS IN THE SPECTRAL INDEX OF POLARIZED SYNCHROTRON EMISSION IN THE 9 yr WMAP SKY MAPS [PDF]

open access: yes, 2014
We estimate the spectral index, β, of polarized synchrotron emission as observed in the 9 yr Wilkinson Microwave Anisotropy Probe sky maps using two methods, linear regression (“T–T plot”) and maximum likelihood. We partition the sky into 24 disjoint sky
U. Fuskeland   +5 more
semanticscholar   +1 more source

Simple single field inflation models and the running of spectral index [PDF]

open access: yesScience China Physics Mechanics and Astronomy, 2014
The BICEP2 experiment confirms the existence of primordial gravitational wave with the tensor-to-scalar ratio r = 0 ruled out at 7σ level. The consistency of this large value of r with the Planck data requires a large negative running n′s of the scalar ...
Qing Gao   +3 more
semanticscholar   +1 more source

Spectral Diffractive Lenses for Measuring a Modified Red Edge Simple Ratio Index and a Water Band Index [PDF]

open access: gold, 2021
Veronika A. Blank   +3 more
openalex   +1 more source

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