Results 101 to 110 of about 73,130,393 (362)
s-process Nuclear Reaction Rates
EPJ Web of Conferences, 2023 In stars the 13C(α, n)16O and 22Ne(α, n)25Mg reactions are the two main sources of neutrons for the so-called slow neutron capture process (s-process), which is one of the main mechanisms for the stellar synthesis of heavy elements. About 13C(α, n)16O, in despite of many efforts in measuring its cross section at the lower energies, only high ...
openaire +2 more sources
s-process enrichment in the planetary nebula NGC 3918. Results from deep echelle spectrophotometry [PDF]
, 2014 (Abridged) The chemical content of the planetary nebula NGC 3918 is investigated through deep, high-resolution UVES at VLT spectrophotometric data. We identify and measure more than 750 emission lines, making ours one of the deepest spectra ever taken ...
J. Garc'ia-Rojas +12 more
semanticscholar +1 more source
What makes a good process model? Lessons learned from process mining
, 2012 There seems to be a never ending stream of new process modeling notations. Some of these notations are foundational and have been around for decades (e.g., Petri nets).
Aalst, WMP Wil van der +2 more
core +1 more source
Pediatric Blood &Cancer, EarlyView.ABSTRACT Background Pediatric thromboembolism is increasingly encountered in critical care. Systemic thrombolysis with tissue plasminogen activator (tPA) facilitates vessel or valve patency, yet pediatric‐specific protocols remain undefined, and safety concerns persist. Objective To evaluate the efficacy and safety of a tailored, prolonged systemic tPA
Eran Shostak +5 more
wiley +1 more source
First Results of the 64Ni(n,γ) Cross Section Measurement at n_TOF
GalaxiesThe neutron capture cross section of 64Ni is an important parameter in nuclear astrophysics that is needed to accurately simulate stellar nucleosynthesis and validate stellar models.
Michele Spelta +134 more
doaj +1 more source
OVERVIEW OF WASTEWATER CHARACTERISTICS OF CARDBOARD INDUSTRY
Scientific Study & Research: Chemistry & Chemical Engineering, Biotechnology, Food Industry, 2021 The purpose of this study is to characterize wastewater from the corrugated cardboard industry and to highlight the nature and sources of pollution. Wastewaters from the corrugator and printing processes as well as homogenization tank, which collects ...
S. HARIF, M. A. ABOULHASSAN, L. BAMMOU
doaj
Applied Sciences, 2022 The paper which is based on a literature review combined with a case study, spanning manufacturing and process industry contexts, set out to determine whether there is an emerging trend to use a service-oriented architecture (SOA)-based platform ...
Petter Kyösti, John Lindström
doaj +1 more source
Neutron capture time scale of the s-process, estimated from s-process krypton in a meteorite
The Astrophysical Journal, 1980 A krypton fraction enriched in s-process isotopes was extracted from a mineral fraction of the Murchison C2 chondrite. The (Kr-86)/(Kr-84) ratio is enhanced by 6 standard deviations, showing that significant amounts of Kr-86 were made in the s-process, despite the short, 10.8 yr beta-decay half-life of its precursor, Kr-85.
J.-I. Matsuda, R. S. Lewis, E. Anders
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Prospects for direct neutron capture measurements on s-process branching point isotopes
, 2017 .The neutron capture cross sections of several unstable key isotopes acting as branching points in the s -process are crucial for stellar nucleosynthesis studies, but they are very challenging to measure directly due to the difficult production of ...
C. Guerrero +6 more
semanticscholar +1 more source
TESTING THE ROLE OF SNe Ia FOR GALACTIC CHEMICAL EVOLUTION OF p-NUCLEI WITH TWO-DIMENSIONAL MODELS AND WITH s-PROCESS SEEDS AT DIFFERENT METALLICITIES [PDF]
, 2014 The bulk of p isotopes is created in the “gamma processes” mainly by sequences of photodisintegrations and beta decays in explosive conditions in Type Ia supernovae (SNIa) or in core collapse supernovae (ccSN).
Claudia Travaglio +4 more
semanticscholar +1 more source