Results 91 to 100 of about 80,758 (270)
Renaissance Studies, EarlyView.ABSTRACT During the fifteenth and sixteenth centuries, there was no statutory difference between cartography, drawing and painting. These activities were performed then by craftsmen who were part of a vast group under the umbrella of ‘mechanical arts’ and fell under the ‘artifex’ category. Artifex were experts in any particular art, whether a craftsman,
Vasco Medeiros
wiley +1 more source
The Astrophysical Journal Supplement SeriesWe present the active galactic nuclei (AGN) catalog from the fourth data release (HDR4) of the Hobby–Eberly Telescope Dark Energy Experiment Survey (HETDEX). HETDEX is an untargeted spectroscopic survey.
Chenxu Liu +9 more
doaj +1 more source
Spaceborne and spaceborn: Physiological aspects of pregnancy and birth during interplanetary flight
Experimental Physiology, EarlyView.Abstract Crewed interplanetary return missions that are on the planning horizon will take years, more than enough time for initiation and completion of a pregnancy. Pregnancy is viewed as a sequence of processes – fertilization, blastocyst formation, implantation, gastrulation, placentation, organogenesis, gross morphogenesis, birth and neonatal ...
Arun V. Holden
wiley +1 more source
Observational Signatures of Galactic Winds Powered by Active Galactic Nuclei
, 2014 We predict the observational signatures of galaxy scale outflows powered by active galactic nuclei (AGN). Most of the emission is produced by the forward shock driven into the ambient interstellar medium (ISM) rather than by the reverse shock.
Faucher-Giguere, Claude-Andre +2 more
core +1 more source
Defining Scales of Field Studies and Experiments to Assess Marine Cloud Brightening
AGU Advances, Volume 7, Issue 2, April 2026.Abstract Solar radiation modification (SRM) is being discussed as a potential option for addressing climate risks while atmospheric greenhouse gas concentrations are reduced to lower levels. However, understanding of the potential efficacy, impacts, benefits and harms of different SRM approaches remains limited.
Sarah J. Doherty +3 more
wiley +1 more source
New Insight from the James Webb Space Telescope on Variable Active Galactic Nuclei
The Astrophysical JournalVariability detected in galaxies is usually attributed to their active galactic nuclei (AGNs). While all AGNs are intrinsically variable, the AGN unification model predicts that Type 2 AGNs rarely vary because their engines are blocked by dust tori ...
Bangzheng Sun +3 more
doaj +1 more source
The Effects of Carbonate Precipitation on the Physical Properties of Basalt
AGU Advances, Volume 7, Issue 2, April 2026.Abstract To avoid the negative consequences of climate change, there is an urgent need to remove carbon dioxide from the atmosphere. Carbon mineralization—the conversion of injected CO2 into stable carbonate minerals—offers a promising pathway for large‐scale, permanent geologic storage. While projects such as CarbFix have demonstrated its feasibility,
Jonathan Simpson +4 more
wiley +1 more source
Infrared spectroscopic diagnostics for Active Galactic Nuclei
, 2007 Infrared spectroscopy in the mid- and far-infrared provides powerful diagnostics for studying the emission regions in active galaxies. The large variety of ionic fine structure lines can probe gas conditions in a variety of physical conditions, from ...
Spinoglio, Luigi
core +1 more source
, 2013 This final chapter introduces a classical example of sources emitting high energy radiation. A strong effort has been made to introduce these sources at a basic level: no pre-knowledge is required. They are one of the best fields of research where we can use what studied in all the previous chapters: we will apply the just learnt theory to the most ...
+4 more sources