Results 21 to 30 of about 2,058 (121)

Analysis of Terpolymerization Systems for the Development of Carbon Fiber Precursors of PAN

International Journal of Polymer Science, Volume 2020, Issue 1, 2020., 2020
The thermal stabilization of polyacrylonitrile fibers (FPAN) is one of the most important steps in the production of carbon fibers (CFs). In this paper, new precursor polymers from PAN have been synthesized with different chemical characteristics using a solution polymerization, and FPAN was obtained using an unconventional wet spinning system in the ...
Daniel Alcalá-Sánchez, Juan-Carlos Tapia-Picazo, Adrian Bonilla-Petriciolet, Gabriel Luna-Bárcenas, J. M. López-Romero, Alberto Álvarez-Castillo, Zhonghua Peng   +6 more
wiley   +1 more source

Assessment of upper tropospheric HOx sources over the tropical Pacific based on NASA GTE/PEM data: Net effect on HOx and other photochemical parameters [PDF]

, 1999
Data for the tropical upper troposphere (8-12 km, 20° N-20° S) collected during NASA's Pacific Exploratory Missions have been used to carry out a detailed examination of the photochemical processes controlling HOx (OH+HO2).
Barrick, J, Blake, D, Chen, G, Crawford, J, Davis, D, Gregory, G, Heikes, B, Liu, S, Olson, J, Sachse, G, Sandholm, S, Singh, H   +11 more
core   +1 more source

Eulerian and Newtonian dynamics of quantum particles [PDF]

, 2013
We derive the classical equations of hydrodynamic type (Euler equation and the continuity equation) from which the Schrodinger equation follows as a limit case.
Rashkovskiy, Sergey
core   +1 more source

Higher-order Abel equations: Lagrangian formalism, first integrals and Darboux polynomials

, 2009
A geometric approach is used to study a family of higher-order nonlinear Abel equations. The inverse problem of the Lagrangian dynamics is studied in the particular case of the second-order Abel equation and the existence of two alternative Lagrangian ...
Abraham R, Boyko V M, Boyko V M, Briskin M, Cariñena J F, Crampin M, Crampin M, Damianou P A, Darboux G, Darboux G, Darboux G, Davis H T, Erbe L, Fernandes R L, Francoise J P, Grundland A M, José F Cariñena, Lopuszanski J, López C, Manuel F Rañada, Murphy G M, Nucci M C, Partha Guha, Polyanin A D, Sarlet W, Sarlet W, Zwillinger D   +26 more
core   +1 more source

Neurodegeneration and Glial Response after Acute Striatal Stroke: Histological Basis for Neuroprotective Studies

Oxidative Medicine and Cellular Longevity, Volume 2016, Issue 1, 2016., 2016
Stroke is a leading cause of death and neurological disability worldwide and striatal ischemic stroke is frequent in humans due to obstruction of middle cerebral artery. Several pathological events underlie damage progression and a comprehensive description of the pathological features following experimental stroke in both acute and chronic survival ...
Rafael R. Lima, Luana N. S. Santana, Rafael M. Fernandes, Elder M. Nascimento, Ana Carolina A. Oliveira, Luanna M. P. Fernandes, Enio Mauricio N. dos Santos, Patrycy Assis N. Tavares, Ijair Rogério dos Santos, Adriano Gimarães-Santos, Walace Gomes-Leal, Michael D. Coleman   +11 more
wiley   +1 more source

El tratado sobre la prohibición de las armas nucleares

Revista Electrónica de Derecho Internacional Contemporáneo
En 2017 con la adopción del Tratado sobre la prohibición de las armas nucleares (TPAN) se abrió una etapa superior en las negociaciones relativas a los temas nucleares, que sitúa al hombre en el centro de las preocupaciones de la agenda internacional ...
Emily Puisseaux Moreno, Hayla Massiel Alonso Valle, Karlén Isrober Regaiferos Cruzata   +2 more
doaj   +1 more source

Observation-based modeling of ozone chemistry in the Seoul metropolitan area during the Korea-United States Air Quality Study (KORUS-AQ) [PDF]

, 2020
The Seoul Metropolitan Area (SMA) has a population of 24 million and frequently experiences unhealthy levels of ozone (O3). In this work, measurements taken during the Korea-United States Air Quality Study (KORUS-AQ, 2016) are used to explore regional ...
Ahn, Joon-Young, Blake, Donald R, Blake, Nicola J, Chang, Limseok, Chen, Gao, Choi, Yonghoon, Crawford, James H, Digangi, Joshua P, Diskin, Glenn, Fried, Alan, Hall, Samuel R, Huey, Greg L, Hughes, Stacey C, Kim, Michelle, Meinardi, Simone, Mikoviny, Tomas, Montzka, Denise D, Pusede, Sally E, Schroeder, Jason R, Tanner, David J, Ullmann, Kirk, Walega, James, Weinheimer, Andrew, Wennberg, Paul, Wisthaler, Armin   +24 more
core   +2 more sources

IL‐4 induces cAMP and cGMP in human monocytic cells

Mediators of Inflammation, Volume 4, Issue 4, Page 298-305, 1995., 1995
Human monocytes, preincubated with IFN‐γ respond to IL‐4 by a cGMP increase through activation of an inducible NO synthase. Here, IL‐4 was found to induce an accumulation of cGMP (1 – 3 min) and cAMP (20 – 25 min) in unstimulated monocytes. This was impaired with NOS inhibitors, but also with EGTA and calcium/calmodulin inhibitors.
B. Dugas, N. Paul-Eugene, K. Yamaoka, C. Amirand, C. Damais, J. P. Kolb   +5 more
wiley   +1 more source

The origin of interstellar asteroidal objects like 1I/2017 U1 'Oumuamua

, 2018
We study the origin of the interstellar object 1I/2017 U1 'Oumuamua by juxtaposing estimates based on the observations with simulations. We speculate that objects like 'Oumuamua are formed in the debris disc as left over from the star and planet ...
Bedorf, Jeroen, Cai, Maxwell, Pelupessy, Inti, Torres, Santiago, Zwart, Simon Portegies   +4 more
core   +1 more source

Global Observations of Acetyl Peroxynitrate (PAN) in the Remote Troposphere

Geophysical Research Letters, Volume 52, Issue 16, 28 August 2025.
Abstract We present global airborne observations of acetyl peroxynitrate (CH3C(O)OONO2, PAN) in the remote troposphere from the Atmospheric Tomography (ATom) campaign. These observations show that biomass burning is the dominant source of PAN in the Southern Hemisphere (SH).
Young Ro Lee, L. Gregory Huey, David J. Tanner, James M. Roberts, Yuhang Wang, Paul O. Wennberg, John D. Crounse, Hannah Allen, Eric C. Apel, Alan J. Hills, Rebecca S. Hornbrook, James W. Elkins, Eric Hintsa, Fred Moore, Samuel R. Hall, Kirk Ullmann, Kathryn McKain, Colm Sweeney, Thomas B. Ryerson, Jeff Peischl, Chelsea R. Tompson, Ilann Bourgeois, Eric Ray, Paul A. Newman, Sarah Strode   +24 more
wiley   +1 more source