Results 91 to 100 of about 50,847 (273)
The biogenic synthesis of silver nanoparticles (AgNPs) using Aloe fleurentiniorum extract and antibacterial activity of the synthesized AgNPs were investigated.
Saleh H. Salmen, Sulaiman Ali Alharbi
doaj +1 more source
Investigation of in vivo measurement of cerebral cytochrome-c-oxidase redox changes using near-infrared spectroscopy in patients with orthostatic hypotension [PDF]
We have previously used a continuous four wavelength near infrared spectrometer to measure changes in the cerebral concentrations of oxy- (Δ[HbO2] and deoxy- haemoglobin (Δ[HHb]) during head-up tilt in patients with primary autonomic failure.
Cooper, C.E. +6 more
core
The Observations of Type Ia Supernovae
The past ten years have seen a tremendous increase in the number of Type Ia supernovae discovered and in the quality of the basic data presented.
Suntzeff, Nicholas B.
core +1 more source
Further constraints on the optical transmission spectrum of HAT-P-1b [PDF]
We report on novel observations of HAT-P-1 aimed at constraining the optical transmission spectrum of the atmosphere of its transiting Hot-Jupiter exoplanet.
. +7 more
core +2 more sources
Abstract This study proposes a novel, green, and sustainable method for synthesizing magnetic iron oxides from metallurgical copper slag (CS), leveraging its iron content as a valuable resource. Iron was extracted via acid leaching using edible citric acid (ECA), forming a citrate–iron complex (CSL), which was subsequently thermally decomposed at 300°C
Melisa Portilla‐Sangabriel +4 more
wiley +1 more source
Constructing Cu/Cu2O Heterogeneous Interface for Efficient Urea Electrosynthesis
In this study, a Cu/Cu2O heterogeneous interface with dual active sites is prepared for electrocatalytic CO2 and NO3−$$ {\mathrm{NO}}_3^{-} $$ coupling to urea. The catalyst shows high yield rates of 1156.63 mmol g−1 h−1 and FE of 29.67% at −1.0 V (vs RHE), which is significantly higher than Cu and Cu2O, highlighting the advantages of heterogeneous ...
Jiani Liu +7 more
wiley +1 more source
A new method for the detection and estimation of long-chain epoxy acids in seed oils is described. It depends on the measurement of increased absorption at 2.795 μ in the near infrared spectrum caused by chlorohydrins produced from epoxides by treatment ...
Lindsay J. Morris, Ralph T. Holman
doaj +1 more source
Red Supergiants in the Local Group
Galaxies in the Local Group span a factor of 15 in metallicity, ranging from the super-solar M31 to the Wolf-Lundmark-Melotte (WLM) galaxy, which is the lowest-metallicity (0.1xZsun) Local Group galaxy currently forming stars.
Levesque, Emily M.
core +1 more source
Photoelectron transfer mechanism and photocatalytic O2‐to‐H2O2 reduction process over hollow HS@CuFe@CuS heterojunction photocatalysts. Recently, photocatalytic synthesis of H2O2 has received much attention. However, the photocatalytic activity of photocatalysts is generally limited due to multiple factors, such as insufficiency of photoelectrons, low ...
Xiao Mu +6 more
wiley +1 more source
Kinetics of Polyurethane Polymerization Using Fourier Transform Infrared Spectrophotometry (FTIR) [PDF]
M. Barikani, A. B., A. Ahmadi
doaj +1 more source

