Results 51 to 60 of about 288 (182)

Electron Acceleration Efficiency at Earth’s Bow Shock: Statistical Results

The Astrophysical Journal
In this paper, we present a statistical study of electron acceleration efficiency in 1492 selected bow shock events. We define the acceleration efficiency as $\eta ={n}_{{\rm{dn}}}/{n}_{{\rm{am}}}$ , where ${n}_{{\rm{dn}}}$ and n _am are the downstream ...
G. Qin, S. Wang, F.-J. Kong
doaj   +1 more source

Toward a Politics of (In)Fertility: Reproductive Debility in Africa

American Anthropologist, EarlyView.
ABSTRACT Sub‐Saharan Africa has some of the highest estimated rates of infertility or involuntary childlessness in the world, leading epidemiologists to refer to parts of the region as the “infertility belt.” The medicalization of infertility and the situating of assisted reproductive technologies (ARTs) as the treatment for infertility have siphoned ...
Tessa Moll
wiley   +1 more source

Suprathermal Electron Spectra at the Earth’s Bow Shock

The Astrophysical Journal Letters
We present a statistical study of in situ acceleration of ∼0.4–200 keV suprathermal electrons at the Earth’s bow shock, using Wind 3D Plasma and Energetic Particle measurements from 1994 November to 2004 May.
Xinnian Guo, Liu Yang, Linghua Wang, Qianyi Ma   +3 more
doaj   +1 more source

Interplanetary Magnetic Field Effect on the Location of the Martian Bow Shock: MAVEN Observations

The Astrophysical Journal, 2023
The Martian bow shock (BS) is generated with the mass-loading and magnetic pileup processes when the solar wind interacts with the Martian ionosphere. In this vein, the interplanetary magnetic field (IMF) frozen in the solar wind can affect the location ...
H. Y. Sui, M. Wang, J. Y. Lu, Y. Zhou, J. Wang   +4 more
doaj   +1 more source

Hunger as an uncontroversial predictor of poor adolescent mental health: evidence from a multiverse analysis of 410,213 adolescents across 79 countries

Journal of Child Psychology and Psychiatry, EarlyView.
Background Hunger has established detrimental impacts on physical health, with emerging evidence indicating negative impacts on mental health. However, there is a pronounced knowledge gap outside high‐income settings and for adolescents. Previous research also provides differing estimates of hunger's impacts, potentially underpinned by a wide range of ...
Mirela Zaneva, Tsvetomira Dumbalska, Aaron Reeves, Lucy Bowes   +3 more
wiley   +1 more source

The Utility of Infrasound in Global Monitoring of Extraterrestrial Impacts: A Case Study of the 2008 July 23 Tajikistan Bolide

The Astronomical Journal
Among the various observational techniques used for the detection of large bolides on a global scale is a low-frequency sound known as infrasound. Infrasound, which is also one of the four sensing modalities used by the International Monitoring System ...
Elizabeth A. Silber
doaj   +1 more source

Computed tomography reveals multiple origins of extreme caudal vertebral pneumaticity in sauropod dinosaurs

Journal of Anatomy, EarlyView.
Here, we present novel CT scan data of caudal vertebrae of six Middle–Late Jurassic sauropods, representing several eusauropod lineages. We synthesise these new data with a comprehensive critical appraisal of purported external and internal evidence for caudal vertebral PSP in Sauropodomorpha.
Samantha L. Beeston, Daniela Schwarz, Paul Upchurch, Stephen F. Poropat, Patrick Asbach, Philip D. Mannion   +5 more
wiley   +1 more source

Ariadnema polymorpha gen. et sp. nov. (Scytonemataceae, Cyanobacteria): A new heterocytous cyanobacterium with true and false branching from ruins in the Brazilian Atlantic Forest

Journal of Phycology, EarlyView.
Abstract A novel heterocytous Cyanobacterium, Ariadnema polymorpha gen. et sp. nov., was observed in the northern Brazilian Atlantic Forest (BAF), a globally significant biodiversity hotspot that has microbiome diversity yet to be explored. Isolated from ancient sugarcane mill ruins within the BAF, the new genus (strain CCAPE130) exhibits a unique ...
Jefferson Vitor Melo Cabral, Haywood Dail Laughinghouse IV, Jonatas Mota Paulino, Watson Arantes Gama   +3 more
wiley   +1 more source

Quantified Plasma Heating and Energy Dissipation in the Earth’s Quasi-perpendicular Bow Shock

The Astrophysical Journal
The high-speed solar wind decelerates as it travels through the Earth’s bow shock, during which a portion of the incident flow energy is converted into the plasma thermal energy. However, the energy partition of plasma heating among different species, as
G. Y. Lei, M. Zhou, Y. Pang, Z. H. Zhong, X. H. Deng   +4 more
doaj   +1 more source

Bolide Light Curve Systematics from 75 Recovered Meteorites

Meteoritics &Planetary Science, EarlyView.
Abstract How does the energy deposition profile (light curve), deceleration, and penetration depth in Earth's atmosphere depend on asteroid composition and meteorite type? Here, we present the light curve and velocity profile of 75 bolides from camera‐documented meteorite falls.
Peter Jenniskens, Stuart Pilorz, Darrel Robertson, Eric C. Stern   +3 more
wiley   +1 more source