Results 11 to 20 of about 22,697,372 (210)

Investigation of J-Aggregates of 2,3,7,8,12,13,17,18-Octabromo-5,10,15,20-tetrakis(4-sulfonatophenyl) Porphyrin in Aqueous Solutions

Nanomaterials, 2023
The highly distorted water-soluble 2,3,7,8,12,13,17,18-octabromo-5,10,15,20-tetrakis(4-sulfonatophenyl)porphyrin (Br8TPPS44−) is readily protonated under acidic pH, forming the diacid H2Br8TPPS42− and subsequently the zwitterionic H4Br8TPPS4, which ...
Balkis Abdelaziz, Mariachiara Sarà, Sahbi Ayachi, Roberto Zagami, Salvatore Patanè, Andrea Romeo, Maria Angela Castriciano, Luigi Monsù Scolaro   +7 more
doaj   +1 more source

Analysis of Organic Sulphur Compounds in Coal Tar by Using Comprehensive Two-Dimensional Gas Chromatography-High Resolution Time-of-Flight Mass Spectrometry

Separations, 2020
Coal tar is a complex mixture of organic compounds obtained from the thermal treatment of coal; it contains several different chemical classes of compounds, such as polycyclic aromatic hydrocarbons, phenols and different heterocyclic compounds including ...
Ivan Aloisi, Mariosimone Zoccali, Peter Q. Tranchida, Luigi Mondello   +3 more
doaj   +1 more source

An integrated and open-ended experiment: study of chemical waves in time and space [PDF]

, 2008
In this article we discuss an exciting experiment in non-linear dynamics. This provides an imaginative platform for bringing in chemical, physical, biological, mathematical and computational sciences together. There are implications for earth sciences as
Sadhukhan, Mainak, Sinha, Sudarson Sekhar, Deb, B. M., Biswas, Ranjit, Sengupta, Sucheta   +4 more
core   +1 more source

Palaeoenvironmental signatures revealed from rare earth element (REE) compositions of vertebrate microremains of the Vesiku Bone Bed (Homerian, Wenlock), Saaremaa Island, Estonia [PDF]

, 2015
The Estonian Journal of Earth Sciences is an open access journal and applies the Creative Commons Attribution 4.0 International License CC BY to all its papers (http://creativecommons.org/licenses/by/4.0/).
Alberto Pérez-Huerta, Zigaite, Z, Jeffries, T, Fadel, A, Ahlberg, PE, Alexandre Fadel, Živilė Žigaitė, Teresa Jeffries, Henning Blom, Perez-Huerta, A, Blom, H, Tiiu Märss, Maersse, T, Per Erik Ahlberg, Jeffries, Teresa, Blom, Henning,, Ahlberg, Per Erik,, Perez-Huerta, Alberto, Maersse, Tiiu, Fadel, Alexandre,, Zigaite, Zivile,   +20 more
core   +2 more sources

A Computational Quantum-Based Perspective on the Molecular Origins of Life’s Building Blocks

Entropy, 2022
The search for the chemical origins of life represents a long-standing and continuously debated enigma. Despite its exceptional complexity, in the last decades the field has experienced a revival, also owing to the exponential growth of the computing ...
Gabriele Amante, Judit E. Sponer, Jiri Sponer, Franz Saija, Giuseppe Cassone   +4 more
doaj   +1 more source

Incidence of Phage Capsid Organization on the Resistance to High Energy Proton Beams

Applied Sciences, 2022
The helical geometry of virus capsid allows simple self-assembly of identical protein subunits with a low request of free energy and a similar spiral path to virus nucleic acid.
Laura Maria De Plano, Letteria Silipigni, Lorenzo Torrisi, Alfio Torrisi, Mariapompea Cutroneo, Vladimir Havranek, Anna Mackova, Vincenzo Zammuto, Concetta Gugliandolo, Maria Giovanna Rizzo, Salvatore P. P. Guglielmino, Domenico Franco   +11 more
doaj   +1 more source

A green and sustainable method for Capsicum volatilome investigation by means of headspace solid-phase microextraction combined with flow-modulated two-dimensional gas chromatography-mass spectrometry using hydrogen as carrier gas

Green Analytical Chemistry, 2023
The present research is focused on the development of a green and sustainable analytical method, based on the use of headspace solid-phase microextraction (HS SPME), and hydrogen as carrier gas, within the context of fast flow-modulation comprehensive ...
Micaela Galletta, Mariosimone Zoccali, Donato Creti, Luigi Mondello, Peter Q. Tranchida   +4 more
doaj   +1 more source

Pore Structure and Water Transfer in Pietra d’Aspra Limestone: A Neutronographic Study

Applied Sciences, 2020
Neutron radiography (NR) was here applied to study the effects of two different commercially available consolidants on the water absorption properties in a particular type of limestone (biocalcarenite), known as Pietra d’Aspra stone, which is one of the ...
Luciana Randazzo, Giuseppe Paladini, Valentina Venuti, Vincenza Crupi, Frédéric Ott, Giuseppe Montana, Michela Ricca, Natalia Rovella, Mauro Francesco La Russa, Domenico Majolino   +9 more
doaj   +1 more source

Exploiting the upconversion luminescence, Lewis acid catalytic and photothermal properties of lanthanide-based nanomaterials for chemical and polymerization reactions

, 2022
Lanthanide-based nanocrystals possess three unique physical properties that make them attractive for facilitating photoreactions, namely photon upconversion luminescence, Lewis acid catalytic activity and photothermal properties.
Wu, Xiangyang, Yeow, Edwin Kok Lee, Edwin K. L. Yeow, Xiangyang Wu   +3 more
core   +1 more source

Geological and Structural Framework, Inventory, and Quantitative Assessment of Geodiversity: The Case Study of the Lake Faro and Lake Ganzirri Global Geosites (Italy)

Geosciences
The geoconservation policies assumed by the Sicilian Region (Italy) induced to classify as geosites all the geodiversity preserved in the Sicilian natural reserves.
Roberta Somma, Sebastiano Ettore Spoto, Salvatore Giacobbe   +2 more
doaj   +1 more source