Results 31 to 40 of about 1,131 (195)

Wildfire Segmentation Using Deep Vision Transformers

Remote Sensing, 2021
In this paper, we address the problem of forest fires’ early detection and segmentation in order to predict their spread and help with fire fighting. Techniques based on Convolutional Networks are the most used and have proven to be efficient at solving ...
Rafik Ghali, Moulay A. Akhloufi, Marwa Jmal, Wided Souidene Mseddi, Rabah Attia   +4 more
doaj   +1 more source

On the Mechanism of the Synthesis of Nitrofunctionalised Δ²-Pyrazolines via [3+2] Cycloaddition Reactions between α-EWG-Activated Nitroethenes and Nitrylimine TAC Systems

Organics, 2022
We investigated the reactivity of different substituted nitrylimine-type three atom components (TACs) in [3+2] cycloaddition (32CAs) reactions with electrophilically activated nitroethenes within molecular electron density theory (MEDT).
Agnieszka Fryźlewicz, Aleksandra Olszewska, Karolina Zawadzińska, Przemysław Woliński, Karolina Kula, Agnieszka Kącka-Zych, Agnieszka Łapczuk-Krygier, Radomir Jasiński   +7 more
doaj   +1 more source

Understanding the high reactivity of carbonyl compounds towards nucleophilic carbenoid intermediates generated from carbene isocyanides [PDF]

RSC Advances, 2015
The high reactivity of carbonyl compounds towards the carbenoid intermediate cis-IN, generated in situ by the addition of methyl isocyanide to dimethyl acetylenedicarboxylate (DMAD), has been investigated at the MPWB1K/6-311G(d,p) computational level by ...
Mar Ríos-Gutiérrez, Luis R. Domingo, Patricia Pérez   +2 more
doaj   +1 more source

Thermal [2+2] Cycloaddition Reactions of Perfluorobicyclo[2.2.0]hex-1(4)-ene with Ethylene, Benzene and Styrene: A MEDT Perspective. [PDF]

Materials (Basel)
Thermal [2+2] cycloaddition (22CA) reactions of perfluorobicyclo[2.2.0]hex-1(4)-ene (PFBHE) and bicyclo[2.2.0]hex-1(4)-ene (BHE) with ethylene, benzene and styrene were investigated through the Molecular Electron Density Theory (MEDT) at the UM06-2X/6-311G(d,p) level in benzene.
Kącka-Zych A, Domingo LR.
europepmc   +3 more sources

The Musical Emotion Discrimination Task: A New Measure for Assessing the Ability to Discriminate Emotions in Music

Frontiers in Psychology, 2019
Previous research has shown that levels of musical training and emotional engagement with music are associated with an individual’s ability to decode the intended emotional expression from a music performance. The present study aimed to assess traits and
Chloe MacGregor, Daniel Müllensiefen
doaj   +1 more source

Experimental and Theoretical Mechanistic Study on the Thermal Decomposition of 3,3-diphenyl-4-(trichloromethyl)-5-nitropyrazoline

Molecules, 2021
The present paper is a continuation of comprehensive study regarding to synthesis and properties of pyrazoles and their derivatives. In its framework an experimental and theoretical studies of thermal decomposition of the 3,3-diphenyl-4-(trichloromethyl)-
Karolina Kula, Agnieszka Kącka-Zych, Agnieszka Łapczuk-Krygier, Zbigniew Wzorek, Anna K. Nowak, Radomir Jasiński   +5 more
doaj   +1 more source

BET & ELF Quantum Topological Analysis of Neutral 2-Aza-Cope Rearrangement of γ-Alkenyl Nitrones

Molecules, 2017
The 2-Aza-Cope rearrangement of γ-alkenyl nitrones is a rare example of the neutral thermal 2-aza-Cope process that usually takes place with cationic species.
Pedro Merino, Maria A. Chiacchio, Laura Legnani, Tomás Tejero   +3 more
doaj   +1 more source

Exploring Regio- and Stereoselectivity in [3+2] Cycloaddition: Molecular Electron Density Theory Approach for Novel Spirooxindole-Based Benzimidazole with Pyridine Spacer

Crystals, 2023
A new ethylene derivative was synthesized as a precursor for the [3+2] cycloaddition (32CA) reaction to access a novel spirooxindole embodied with benzimidazole with a pyridine spacer.
Saeed Alshahrani, Abdullah Mohammed Al-Majid, Abdullah Saleh Alamary, Mar Ríos-Gutiérrez, Assem Barakat   +4 more
doaj   +1 more source

On the Question of the Formation of Nitro-Functionalized 2,4-Pyrazole Analogs on the Basis of Nitrylimine Molecular Systems and 3,3,3-Trichloro-1-Nitroprop-1-Ene

Molecules, 2022
Experimental and theoretical studies on the reaction between (E)-3,3,3-trichloro-1-nitroprop-1-ene and N-(4-bromophenyl)-C-arylnitrylimine were performed.
Karolina Kula, Agnieszka Łapczuk, Mikołaj Sadowski, Jowita Kras, Karolina Zawadzińska, Oleg M. Demchuk, Gajendra Kumar Gaurav, Aneta Wróblewska, Radomir Jasiński   +8 more
doaj   +1 more source

A Molecular Electron Density Theory Study of the Competitiveness of Polar Diels–Alder and Polar Alder-ene Reactions

Molecules, 2018
The competitiveness of the BF3 Lewis acid (LA) catalyzed polar Diels–Alder (P-DA) and polar Alder-ene (P-AE) reactions of 2-methyl-1,3-butadiene, a diene possessing an allylic hydrogen, with formaldehyde has been studied within the Molecular ...
Luis R. Domingo, Mar Ríos-Gutiérrez, Patricia Pérez   +2 more
doaj   +1 more source