Results 11 to 20 of about 39,720 (294)

Application research of image recognition technology based on CNN in image location of environmental monitoring UAV

open access: yesEURASIP Journal on Image and Video Processing, 2018
UAV remote sensing has been widely used in emergency rescue, disaster relief, environmental monitoring, urban planning, and so on. Image recognition and image location in environmental monitoring has become an academic hotspot in the field of computer ...
Kunrong Zhao   +6 more
doaj   +1 more source

La práctica docente basada en la investigación de aula con aplicación del componente virtual como herramientas de mejora del aprendizaje en el Programa Educación General Básica I y II Ciclos

open access: yesInnovaciones Educativas, 2014
Este artículo presenta la innovación educativa, del mejoramiento de las condiciones académicas y técnicas en que se llevan a cabo los procesos de formación de docentes en la UNED, para atender la educación primaria en Costa Rica.
Jorge Cartín Obando
doaj   +1 more source

Aprendizaje autorregulado en la teoría sociocognitiva: Marco conceptual y posibles líneas de investigación

open access: yesEnsayos Pedagógicos, 2017
Este ensayo consiste en una revisión bibliográfica que expone los conceptos de aprendizaje autorregulado y de autorregulación del aprendizaje en el marco de la teoría sociocognitiva. Se hace necesario explicar dos elementos fundamentalmente relacionados:
Eduardo Chaves Barboza   +1 more
doaj   +1 more source

Molecular structure, vibrational spectra, NBO, Fukui function, HOMO-LUMO analysis and molecular docking study of 6-[(2-methylphenyl)sulfanyl]-5-propylpyrimidine-2,4(1H,3H)-dione

open access: yesMacedonian Journal of Chemistry and Chemical Engineering, 2017
Theoretical and experimental FT-IR and FT-Raman vibrational spectral analysis of 6-[(2-methylphenyl)sulfanyl]-5-propylpyrimidine-2,4(1H,3H)-dione have been recorded in the region 4000-400 cm-1 and 4000-100 cm-1 insolid phase.
Haitham AlRabiah   +6 more
doaj   +1 more source

First Report of Resistance to Glyphosate in Several Species of the Genus Echinochloa in Argentina

open access: yesAgronomy, 2023
The genus Echinochloa consists of about 33 species worldwide; some of these are weeds that are very difficult to control in Argentina, and only E. colona was reported as resistant to glyphosate.
Eduardo Cortés   +5 more
doaj   +1 more source

Synthesis, Characterisation, Crystal Structure, DFT, and Hirshfeld Surface Study of a Slightly Distorted Tetrahedral Zn(II) Complex Based on Triphenylphosphanol [PDF]

open access: yesIranian Journal of Chemistry & Chemical Engineering
An intriguing novel complex, [ZnCl2(Ph3POH)2], containing two equivalents of triphenylphosphanol (Ph3POH), was synthesized by reacting anhydrous ZnCl2 with triphenylphosphine in methanol, yielding a dichlorobis(triphenylphosphanol)-zinc(II) complex with ...
Karwan Ali, Nabil Fakhre, Salim Saber
doaj   +1 more source

Competition between Intra and Intermolecular Triel Bonds. Complexes between Naphthalene Derivatives and Neutral or Anionic Lewis Bases

open access: yesMolecules, 2020
: A TrF2 group (Tr = B, Al, Ga, In, Tl) is placed on one of the α positions of naphthalene, and its ability to engage in a triel bond (TrB) with a weak (NCH) and strong (NC−) nucleophile is assessed by ab initio calculations.
Wiktor Zierkiewicz   +2 more
doaj   +1 more source

Predictive value of motor-evoked potentials for motor recovery in patients with hemiparesis secondary to acute ischemic stroke

open access: yesAnnals of Medicine, 2023
Background Motor recovery following a stroke is related to the initial stroke severity and corticospinal tract integrity. One of the outcomes representing corticospinal tract integrity is the motor evoked potential (MEP).
Cheng-Chang Yen   +3 more
doaj   +1 more source

7,7\'-Bis[(aza-18-crown-6)carbonyl]thioindigo: Synthesis, Experimental, Theoretical Characterization and Biological Activities

open access: yesMedicine Science, 2013
This work presents the characterization of 7,7\'-Bis[(aza-18-crown-6)carbonyl]thioindigo (I) by quantum chemical calculations and spectral techniques. The molecular geometry, frontier molecular orbitals (FMO), molecular electrostatic potentials (MEP) and
Metin Koparir
doaj   +1 more source

Experimental Studies and DFT Calculations of a Novel Molecule Having Thieno[3,2-b]thiophene Fragment

open access: yesSüleyman Demirel Üniversitesi Fen-Edebiyat Fakültesi Fen Dergisi, 2020
A novel molecule of thieno[3,2-b]thiophene-2,5-diylbis[N-(4-chlorophenyl)methanimine] (TTBM) was synthesized using thieno[3,2-b]thiophene fragment, and characterized using UV-Vis, FTIR, 1H NMR and LC-MS spectroscopy.
Çiğdem Yörür Göreci
doaj   +1 more source

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