Results 71 to 80 of about 221,703 (328)
A radio Search for high redshift HI absorption [PDF]
, 1995 Ground based optical observations have yielded considerable information on the statistics of damped-lyman alpha systems. In particular these systems are known to be the dominant repository of the observed neutral gas at high redshift.
CC Steidel +8 more
core +2 more sources
Advanced Functional Materials, EarlyView.Research on phase ratio‐dependent modulation of built‐in electric fields and d‐band centers in yolk–shell structured C@MoS2‐MoSe2 has determined that the C@3MoS2‐1MoSe2 configuration is optimal, which can achieve an optimal d‐band center position and enhance electrochemical performance.
Ruixian Duan +11 more
wiley +1 more source
Comparative study on zinc oxide nanocrystals synthesized by two precipitation methods
CerâmicaZinc oxide nanocrystals were synthesized by two precipitation methods successfully. The nanocrystals prepared via method I (zinc acetate dihydrate precipitation with KOH) were smaller in crystallite size (~20 nm) as compared to method II (zinc nitrate ...
M. R. Bodke, Y. Purushotham, B. N. Dole
doaj +1 more source
The inefficiency of stellar feedback in driving galactic outflows in massive galaxies at high redshift [PDF]
, 2023 Luigi Bassini +7 more
openalex +1 more source
Advanced Functional Materials, EarlyView.Herein presented supraparticles combine the nanoparticulate photocatalyst graphitic carbon nitride with the enzyme horseradish peroxidase, which is immobilized on silica nanoparticles. In an optimized compatibility range, both catalysts operate effectively within the hybrid supraparticles and catalyze a cascade reaction consisting of the photocatalytic
Bettina Herbig +11 more
wiley +1 more source
Forward Modeling of Galaxy Populations for Cosmological Redshift Distribution Inference
The Astrophysical Journal Supplement Series, 2023 We present a forward-modeling framework for estimating galaxy redshift distributions from photometric surveys. Our forward model is composed of: a detailed population model describing the intrinsic distribution of the physical characteristics of galaxies,
Justin Alsing +4 more
doaj +1 more source
Study of star-forming galaxies in SDSS up to redshift 0.4: I. Metallicity evolution
, 2009 The chemical composition of the gas in galaxies versus cosmic time provides a very important tool for understanding galaxy evolution. Although there are many studies at high redshift, they are rather scarce at lower redshifts.
Bongiovanni, A. +7 more
core +2 more sources
Design and Applications of Multi‐Frequency Programmable Metamaterials for Adaptive Stealth
Advanced Functional Materials, EarlyView.This article provides a comprehensive overview of metamaterials, including their fundamental principles, properties, synthesis techniques, and applications in stealth, as well as their challenges and future prospects. It covers topics that are more advanced than those typically discussed in existing review articles, while still being closely connected ...
Jonathan Tersur Orasugh +4 more
wiley +1 more source
Redshifts and Killing vectors [PDF]
American Journal of Physics, 2006 Current approaches to physics stress the importance of conservation laws due to spacetime and internal symmetries. In special and general relativity the generators of these symmetries are known as Killing vectors. We use them for the rigorous determination of gravitational and cosmological redshifts.
Harvey, Alex +2 more
openaire +2 more sources
Ultrahigh energy neutrinos from high-redshift electromagnetic cascades [PDF]
, 2022 AmirFarzan Esmaeili +3 more
openalex +1 more source