Results 11 to 20 of about 528,301 (219)

Synthesis and Characterization Complexes of Cobalt(II), Nickel(II), Copper(II) and Palladium with [N'-{2-(4-isobutyl-phenyl)-propionyl} pyridine-4-carbohydrazide]

open access: yesTikrit Journal of Pure Science, 2023
This research concern with the metal complexes of the ligand [N'-{2-(4-isobutyl-phenyl)-propionyl}pyridine-4-carbohydrazide]  with Co(II), Ni(II) , Cu(II) and Pd(II) have been synthesized and characterized by atomic absorption , infrared, electronic ...
Modher Y. Mohammed   +2 more
doaj   +1 more source

Multisensor Assessment of Leaf Area Index across Ecoregions of Ardabil Province, Northwestern Iran

open access: yesRemote Sensing, 2022
Leaf area index (LAI), one of the most crucial vegetation biophysical variables, is required to evaluate the structural characteristic of plant communities. This study, therefore, aimed to evaluate the LAI of ecoregions in Iran obtained using Sentinel-2B,
Lida Andalibi   +6 more
doaj   +1 more source

On spectral data and tensor decompositions in Finslerian framework [PDF]

open access: yesAUT Journal of Mathematics and Computing, 2021
The extensions of the Riemannian structure include the Finslerian one, which provided in recent years successful models in various fields like Biology, Physics, GTR, Monolayer Nanotechnology and Geometry of Big Data.
Vladimir Balan
doaj   +1 more source

Synthesis and Sensory Evaluation of <em>ent</em>-Kaurane Diterpene Glycosides

open access: yesMolecules, 2012
Catalytic hydrogenation of the three <em>ent</em>-kaurane diterpene glycosides isolated from <em>Stevia rebaudiana</em>, namely rubusoside, stevioside, and rebaudioside-A has been carried out using Pd(OH)<sub>2</sub> ...
Venkata Sai Prakash Chaturvedula   +3 more
doaj   +1 more source

LRF-Net: Learning Local Reference Frames for 3D Local Shape Description and Matching

open access: yesSensors, 2020
The local reference frame (LRF) acts as a critical role in 3D local shape description and matching. However, most existing LRFs are hand-crafted and suffer from limited repeatability and robustness.
Angfan Zhu   +3 more
doaj   +1 more source

On the Estimation of the Wave Energy Period and a Kernel Proposal for the Peru Basin

open access: yesJournal of Marine Science and Engineering, 2023
The energy period is a crucial parameter needed for assessing wave energy. This parameter is regularly approximated using standard wave spectrums that do not always characterise an actual ocean region, even more if this region is far from the Northern ...
Dennys De La Torre   +2 more
doaj   +1 more source

Lepidotrichilins A and B, New Protolimonoids with Cytotoxic Activity from Trichilia Lepidota (Meliaceae)

open access: yesMolecules, 2013
Two novel protolimonoids, named lepidotrichilins A (1) and B (2), four known protolimonoids, 21,23-epoxy-7α-21α-dihydroxyapotirucalla-14,24-dien-3-one (3), 21,23-epoxy-7α-21β-dihydroxyapotiru-calla-14,24-dien-3-one (4), dysorone D (5), deoxy-flindissone (
Milton M. Kanashiro   +5 more
doaj   +1 more source

Methodology and Modeling of UAV Push-Broom Hyperspectral BRDF Observation Considering Illumination Correction

open access: yesRemote Sensing
The Bidirectional Reflectance Distribution Function (BRDF) is a critical spatial distribution parameter in the quantitative research of remote sensing and has a wide range of applications in radiometric correction, elemental inversion, and surface ...
Zhuo Wang   +4 more
doaj   +1 more source

Inverse Problems for a Conformable Fractional Diffusion Operator

open access: yesJournal of New Theory, 2023
In this paper, we consider a diffusion operator with discrete boundary conditions, which include the conformable fractional derivatives of order $\alpha$ such that ...
Yaşar Çakmak
doaj   +1 more source

VÝZKUM A VÝVOJ UMĚLÉ NEURONOVÉ SÍTĚ PRO SPEKTRÁLNÍ DATA [PDF]

open access: yesACC Journal, 2020
Globální výzva k určení stavu obsahu přepravních a skladovacích kontejnerů pro vysoce radioaktivní odpady (sestavy vyhořelého paliva) nabízí jako jedno z možných řešení provedení vibračních analýz a vyhodnocení vibračních odezev pomocí umělých ...
Dedeken Theo
doaj   +1 more source

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