Results 81 to 90 of about 506,032 (344)

Ammonia chemical ionization mass spectrometry of intact diacyl phosphatidylcholine

Journal of Lipid Research, 1983
Mass spectra have been obtained on molecular species of intact diacyl phosphatidylcholine by means of ammonia gas-induced chemical ionization. MH(+) ions were observed with all species, and other prominent ions in the spectra identified the fatty acid ...
C G Crawford, R D Plattner
doaj   +1 more source

Analytical Formulas of Molecular Ion Abundances and N2H+ Ring in Protoplanetary Disks [PDF]

, 2015
We investigate the chemistry of ion molecules in protoplanetary disks, motivated by the detection of N$_2$H$^+$ ring around TW Hya. While the ring inner radius coincides with the CO snow line, it is not apparent why N$_2$H$^+$ is abundant outside the CO ...
Aikawa, Yuri, Furuya, Kenji, Nomura, Hideko, Qi, Chunhua   +3 more
core   +3 more sources

Molecular dynamics simulations of positively selected codons in FcγRI reveal novel biochemical binding properties

FEBS Open Bio, EarlyView.
Evolutionary analysis across 32 placental mammals identified positive selection at residues H148 and W149 in the immune receptor FcγR1. Ancestral reconstruction combined with molecular dynamics simulations reveals how these mutations may influence receptor structure and dynamics, providing insight into the evolution of antibody recognition and immune ...
David A. Young, Omar Arias‐Gaguancela, Fiona Gibson, Morgan Grainger, Jodie Score, Amit Nathubhai, Mauricio Cafiero, Lee Richard Machado   +7 more
wiley   +1 more source

Cyclic azapeptide CD36 ligand attenuates cardiac injury and reduces long‐chain fatty acid accumulation after myocardial ischemia–reperfusion in mice

FEBS Open Bio, EarlyView.
In a murine model of myocardial ischemia and reperfusion (MI/R), the CD36 azapeptide ligand MPE‐298 reduces cardiac injury and transiently lowers left ventricular long‐chain fatty acids (LCFAs) accumulation 3 h after reperfusion, accompanied by a decrease of oxidative stress and inflammation‐associated genes' expression in the heart and adipose tissue.
Jade Gauvin, Naghme Radmannia, David N. Huynh, Liliane Ménard, Caroline Daneault, Maïté Veilleux, Ahsanullah Ahsanullah, André C. Carpentier, William D. Lubell, Matthieu Ruiz, Huy Ong, Sylvie Marleau, Simon‐Pierre Gravel   +12 more
wiley   +1 more source

An Organic Chemist’s Guide to Electrospray Mass Spectrometric Structure Elucidation

Molecules, 2019
Tandem mass spectrometry is an important tool for structure elucidation of natural and synthetic organic products. Fragmentation of odd electron ions (OE+) generated by electron ionization (EI) was extensively studied in the last few decades, however ...
Arnold Steckel, Gitta Schlosser
doaj   +1 more source

The ionized gas at the center of IC 10: A possible localized chemical pollution by Wolf-Rayet stars

, 2010
We present results from integral field spectroscopy with the Potsdam Multi-Aperture Spectrograph at the 3.5m telescope at Calar Alto Observatory of the intense star-forming region [HL90] 111 at the center of the starburst galaxy IC 10.
A. Mesa-Delgado, Alonso-Herrero, Amorín, Asplund, Baldwin, Bauman, Bordalo, Borissova, Brinchmann, C. Esteban, Cairós, Cairós, Cairós, Calzetti, Cardelli, Crowther, Crowther, Dopita, Esteban, Firpo, Firpo, García-Lorenzo, García-Rojas, Garnett, Garnett, Gil, Henry, Hillenbrand, Hodge, Homeier, Hunter, Hunter, Izotov, Izotov, James, James, Kauffmann, Kehrig, Kelz, Kewley, Kewley, Kewley, Kewley, Kingdon, Kobulnicky, Kobulnicky, Kobulnicky, Kobulnicky, Kobulnicky, L. López-Martín, Lagos, Lee, Leitherer, Lequeux, Leroy, Lozinskaya, López-Sánchez, López-Sánchez, López-Sánchez, López-Sánchez, Magrini, Massey, Massey, Massey, Mateo, McGaugh, Melisse, Mesa-Delgado, Mesa-Delgado, Meynet, Monreal Ibero, Moustakas, Méndez, Oke, Peimbert, Pettini, Pilyugin, Pilyugin, Pilyugin, Pilyugin, Porter, Pustilnik, Pérez-Montero, Richer, Roth, Saito, Sakai, Sanna, Schaerer, Shaw, Shostak, Skillman, Stasińska, Storey, Tenorio-Tagle, Thurow, Vacca, Vacca, Vacca, van Eymeren, van Eymeren, van Eymeren, van Eymeren, van Zee, Veilleux, Walsh, Westmoquette, Westmoquette, Westmoquette, Wilcots, Yang, Yin, York, Á. R. López-Sánchez   +113 more
core   +1 more source

A Compact Spin‐Coated Graphene UWB Antenna for Breast Tumor Detection

Advanced Engineering Materials, EarlyView.
A compact, spin‐coated graphene ultra‐wideband patch antenna designed for breast tumor detection, capable of distinguishing between malignant and benign tumors. This innovative antenna can serve as an effective initial screening tool, particularly in resource‐limited settings such as rural areas, where access to advanced medical equipment like MRI and ...
Raja Rashidul Hasan, Shuvra Saha, Sumit Hassan Eshan, Rinku Basak, Md. Nahian Al Subri Ivan, Ahmed Murtuza Saleque, Raja Tariqul Hasan Tusher, Sadia Zabin, Md. Abdur Rahman, Yuen Hong Tsang   +9 more
wiley   +1 more source

The Calculation of Chemical and Ionization Equilibrium in a Conventional Shock Tube Scientific Report No. 12 [PDF]

Calculating chemical and ionization equilibrium of plasma in conventional shock ...
Flagg, J. C., Rich, J. C.
core   +1 more source

Reduction of Oxide Inclusions During the High‐Frequency Welding of Steel via a Nonthermal Ar/H2 Plasma Jet

Advanced Engineering Materials, EarlyView.
High‐frequency (HF) welding of steel is limited by oxide inclusions that degrade weld quality. This study demonstrates, for the first time, the integration of a nonthermal Ar/H2 dielectric barrier discharge (DBD) plasma jet into HF welding. Local plasma treatment provides effective shielding and in‐situ oxide reduction, resulting in markedly fewer and ...
Viktor Udachin, Lienhard Wegewitz, René Gustus, Henning Wiche, Wolfgang Maus‐Friedrichs   +4 more
wiley   +1 more source

Synthesis of Silver Nanoparticles by Chemical Vapor Deposition Method and Its Application in Laser Desorption/Ionization Techniques

Nanomaterials
Laser desorption/ionization techniques, such as matrix-assisted laser desorption/ionization (MALDI) and surface-assisted laser desorption/ionization (SALDI), are the basis of modern mass spectrometry, enabling the analysis of a wide range of chemical ...
Kinga Robotnik, Tomasz Zieliński, Justyna Walczak-Skierska, Ewelina Sibińska, Paulina Rudzik, Piotr Piszczek, Aleksandra Radtke, Paweł Piotr Pomastowski   +7 more
doaj   +1 more source