Results 111 to 120 of about 5,837,687 (407)

Crossover Effects of Transition‐Metal Ions on Lithium‐Metal Anode in Localized High Concentration Electrolytes

open access: yesAdvanced Functional Materials, EarlyView.
This study highlights the impact of transition‐metal (TM) ions (Ni2⁺, Mn2⁺, Co2⁺) on the performance of lithium‐metal anode in localized high‐concentration electrolytes. Mn2⁺ and Co2⁺ destabilize SEI and CEI layers, causing capacity fade and overpotential, while Ni2⁺ shows minimal effects. These findings underscore the need for electrolyte optimization
Zezhou Guo   +2 more
wiley   +1 more source

Abrupt reduction in shipping emission as an inadvertent geoengineering termination shock produces substantial radiative warming

open access: yesCommunications Earth & Environment
Human activities affect the Earth’s climate through modifying the composition of the atmosphere, which then creates radiative forcing that drives climate change.
Tianle Yuan   +10 more
doaj   +1 more source

Regional Impacts of Urbanization in the United States

open access: yesCanadian Journal of Remote Sensing, 2017
We simulate the impact of impervious surface areas (ISA) on the U.S. local and regional climate. At a local scale, we find the urban area warmer than the surrounding vegetation in most cities, except in arid climate cities where urban temperature is ...
Lahouari Bounoua   +4 more
doaj   +1 more source

Commercial Space Flight

open access: yes, 2019
In little more than a decade, SpaceX, Blue Origin, and a host of other upstart companies have changed the conversation about commercial space. While the plans and dreams of these pioneers were initially dismissed by nation states and major corporate launch providers, they have emerged as disruptors for the global launch market.
openaire   +1 more source

Enhancing Indoor Photovoltaic Efficiency to 37.6% Through Triple Passivation Reassembly and n‐Type to p‐Type Modulation in Wide Bandgap Perovskites

open access: yesAdvanced Functional Materials, EarlyView.
Triple Passivation Treatment (TPT) strategy enables 1.75 eV wide‐bandgap perovskite solar cells (WB‐PSCs) with suppressed halide phase segregation and n‐to‐p type surface transition. The photoluminescence quantum yield increases from 0.5 to 2.1%, indicating reduced non‐radiative losses.
Siming Huang   +12 more
wiley   +1 more source

Supercompliant Lattice Boosts n‐type AgSbTe2 Thermoelectrics

open access: yesAdvanced Functional Materials, EarlyView.
The supercompliant lattice design enables the first realization of n‐type electrical transport in AgSbTe2 by overcoming intrinsic electron‐killer defects and exceeding the doping limits imposed by the conventional Hume–Rothery rule. Accordingly, the best performance n‐type Ag0.8Na0.3Sb0.6Bi0.4Te2 sample achieves a low κ of 0.27 W·m−1·K−1 that ...
Ruoyan Li   +15 more
wiley   +1 more source

Complex changes in climatic suitability for Cassin’s Sparrow ( Peucaea cassinii ) revealed by retrospective ecological niche modeling

open access: yesJournal of Field Ornithology
Conservation status assessments for Cassin’s Sparrow ( Peucaea cassinii ) show considerable variability across the species’ North American range. In this study, we combine data from NASA’s Modern-Era Reanalysis for Research and Applications, Version 2 ...
John L. Schnase   +3 more
doaj   +1 more source

Long-duration space flight and bed rest effects on testosterone and other steroids.

open access: yesJournal of Clinical Endocrinology and Metabolism, 2012
CONTEXT Limited data suggest that testosterone is decreased during space flight, which could contribute to bone and muscle loss. OBJECTIVE The main objective was to assess testosterone and hormone status in long- and short-duration space flight and bed
Scott M Smith   +4 more
semanticscholar   +1 more source

Atmospheric environment for Space Shuttle (STS-27) launch [PDF]

open access: yes
Selected articles on atmospheric conditions observed near Space Shuttle STS-27 launch time on December 2, 1988, at Kennedy Space Center, Florida are summarized.
Batts, G. W.   +2 more
core   +1 more source

Exploration of the moon and planets [PDF]

open access: yes, 1964
Unmanned interplanetary flight - engineering problems of mariner ii space ...
Pickering, W. H.
core   +1 more source

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