Results 81 to 90 of about 224,273 (307)

The impacts of biological invasions

open access: yesBiological Reviews, EarlyView.
ABSTRACT The Anthropocene is characterised by a continuous human‐mediated reshuffling of the distributions of species globally. Both intentional and unintentional introductions have resulted in numerous species being translocated beyond their native ranges, often leading to their establishment and subsequent spread – a process referred to as biological
Phillip J. Haubrock   +42 more
wiley   +1 more source

General circulation in the atmosphere of Venus driven by polar and diurnal variations of surface temperature [PDF]

open access: yes
Mathematical model for Venus atmosphere circulation pattern determined by polar and diurnal temperature ...
Bohachevsky, I. O., Yeh, T. T. J.
core   +1 more source

The myth of the metabolic baseline: sleep–wake cycles undermine a foundational assumption in organismal biology

open access: yesBiological Reviews, EarlyView.
ABSTRACT Basal and standard metabolic rate (BMR and SMR) are cornerstones of physiological ecology and are assumed to be relatively fixed intrinsic properties of organisms that represent the minimum energy required to sustain life. However, this assumption is conceptually flawed. Many core maintenance processes underlying SMR are temporally partitioned
Helena Norman   +4 more
wiley   +1 more source

In Situ Methanation on Mars: A Process Concept Study on the Impact of H2/CO2 and Recycle Ratio

open access: yesChemie Ingenieur Technik, EarlyView.
The rocket propellant methane can be produced on Mars by in situ resource utilization. The H2/CO2 ratio is decisive, and excess H2 is favored for providing sufficient propellant purity. The operation mode—with or without recycling of unreacted reactants—depends on the resource availability of the selected landing site. Abstract For return missions from
Franz Braun   +4 more
wiley   +1 more source

Characterization of GPS total electron content (GPS-TEC) in Antarctica from 2004 to 2011

open access: yesAnnals of Geophysics, 2013
The vertical total electron content (VTEC) obtained from 2004 to 2011 at Comandante Ferraz Brazilian Antarctic Station (62.1°S, 58.4°W) is analyzed to study the mean diurnal, seasonal and annual variations.
Emília Correia   +2 more
doaj   +1 more source

Electron densities and temperatures in the f-region from backscatter measurements at arecibo [PDF]

open access: yes
Diurnal variation in electron densities and temperatures in F region from backscatter measurements over Puerto ...
Carlson, H. C., Nisbet, J. S.
core   +1 more source

Photometric Studies of Auroral Luminosity and its Connection with Some Atmosphere Ionization Phenomena [PDF]

open access: yes, 1958
The auroral radiation, 3914 AO, received from the entire sky on a horizontal diffusing plate was monitored continuously during the nights of 1955-56 and 1956-57. The 1955-56 data and part of the 1956-57 data were used to obtain a diurnal curve for the
Murcray, W. B.
core  

Reply: Choroidal thickness shows diurnal variation

open access: yesJournal of Clinical Ultrasound, 2016
Abstract Not ...
Ağladıoğlu, Kadir   +3 more
openaire   +5 more sources

Light–Moisture Coupling for Enhanced Energy Harvesting

open access: yesEcoEnergy, EarlyView.
Light–moisture coupling energy‐harvesting devices exhibit improved power output and long‐term stability by continuously consuming accumulated protons via photogenerated carriers, thereby dynamically reconstructing ion concentration gradients during operation.
Guangtao Zan, Shengyou Li, Kaiying Zhao
wiley   +1 more source

Diurnal variation of total cloud cover and cloud type in summer in Xinjiang, China based on FY4A and ERA5

open access: yesJournal of Hydrology: Regional Studies
Study region: Xinjiang, China (XJ). Study focus: This study compared the diurnal variations of ground observation- (OBS-), FY4A- and ERA5-based total cloud cover (TCC) and revealed the diurnal variation of FY4A-based cloud type (CLT) in XJ.
Yong Zeng   +3 more
doaj   +1 more source

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