Results 51 to 60 of about 2,703 (267)

Flexoelectricity in Photoconversion: Fundamentals, Materials, and Outlooks

open access: yesAdvanced Science, EarlyView.
Mechanical bending of a flexible cantilever induces a strain gradient in the photoactive material. The resulting flexoelectric field couples with photovoltaic and photoconductive effects, modulating charge generation, separation, and collection. A comparative analysis of oxide perovskites, halide perovskites, and two‐dimensional materials is presented,
Xiang Huang, Feng Li, Rongkun Zheng
wiley   +1 more source

Pleiades low-mass brown dwarfs: the cluster L dwarf sequence [PDF]

open access: yesAstronomy & Astrophysics, 2006
14 pages, 7 figures, accepted for publication in Astronomy and ...
Bihain, G.   +7 more
openaire   +2 more sources

NFYB Integrates Hormonal Signals into Tissue Allometry by Promoting Protein Biosynthesis

open access: yesAdvanced Science, EarlyView.
In the American cockroach, NFYB acts as a spatiotemporin that translates distinct hormonal cues into tissue‐specific allometry. Juvenile hormone activates NFYB in the early fat body, while 20‐hydroxyecdysone induces it in late wing pads. NFYB then promotes protein biosynthesis via core translational machinery, driving differential growth across the ...
Fangfang Liu   +11 more
wiley   +1 more source

New Cold Subdwarf Discoveries from Backyard Worlds and a Metallicity Classification System for T Subdwarfs

open access: yesThe Astrophysical Journal
We report the results of a spectroscopic survey of candidate T subdwarfs identified by the Backyard Worlds: Planet 9 program. Near-infrared spectra of 31 sources with red J  − W2 colors and large J -band reduced proper motions show varying signatures of ...
Adam J. Burgasser   +36 more
doaj   +1 more source

Infrared Spectroscopy of Brown Dwarfs: the Onset of CH4 Absorption in L Dwarfs and the L/T Transition [PDF]

open access: yes, 2001
We present infrared spectra of brown dwarfs with spectral types from mid L to T. The 0.9–2.5 μm spectra of three dwarfs found by the Sloan Digital Sky Survey contain absorption bands of both methane and carbon monoxide and bridge the gap between late L and previously observed T dwarfs.
T.R. Geballe   +5 more
openaire   +1 more source

Non‐Noble Metal Nanocatalysts for Hydrogen Evolution

open access: yesAdvanced Science, EarlyView.
Recent overviews and latest developments of diverse classes of non‐noble catalysts for application toward high‐performance photocatalysis, thermocatalytic steam reforming, and electrocatalysis. Toward sustainability objectives, several advanced characterization tools in combination with the latest breakthroughs in machine learning for material ...
Lina Jaya Diguna   +7 more
wiley   +1 more source

Eight New Substellar Hyades Candidates from the UKIRT Hemisphere Survey

open access: yesThe Astronomical Journal
We have used the UKIRT Hemisphere Survey combined with the UKIDSS Galactic Cluster Survey, the UKIDSS Galactic Plane Survey, and the CatWISE2020 catalog to search for new substellar members of the nearest open cluster to the Sun, the Hyades.
Adam C. Schneider   +18 more
doaj   +1 more source

Constraining the Distribution of L and T Dwarfs in the Galaxy

open access: yesThe Astrophysical Journal, 2005
We estimate the thin disk scale height of the Galactic population of L- & T-dwarfs based on star counts from 15 deep parallel fields from the Hubble Space Telescope. From these observations, we have identified 28 candidate L- & T- dwarfs based on their (i'-z') color and morphology.
Ryan Jr., Russell E.   +3 more
openaire   +2 more sources

SiDT1 Defines Plant Architecture Reminiscent of Green Revolution in Foxtail Millet

open access: yesAdvanced Science, EarlyView.
SiDT1 encodes a GA3‐oxidase that creates a semi‐dwarf, lodging‐resistant architecture reminiscent of the rice Green Revolution. The resulting ideotype performs well under dense planting and provides a valuable genetic resource for high‐yield, mechanized foxtail millet production. ABSTRACT Foxtail millet (Setaria italica) is a drought‐tolerant C4 cereal
Jianzhen Lv   +13 more
wiley   +1 more source

Inspecting Cloudy Substellar Atmospheres with JWST MIRI Synthetic Magnitudes from Spitzer Mid-infrared Spectra

open access: yesThe Astrophysical Journal
We examine the positions of substellar objects in mid-infrared color–magnitude and color–color diagrams to distinguish between cloudy and cloud-free atmospheres.
Jolie L’Heureux   +6 more
doaj   +1 more source

Home - About - Disclaimer - Privacy