Results 31 to 40 of about 339,817 (328)

Limestone residues of sculpting factories utilization as sorbent for removing Pb(II) ion from aqueous solution

open access: yesResults in Chemistry, 2022
This study aims to use limestone wasted from the factory of stone carving for the adsorption of Pb(II) ion from aqueous solution. The process of adsorbing Pb(II) ion was achieved by using the patch method at conditions of (mass of adsorbent = 0.3, 0,6, 1.
Firas Fadhel Ali   +2 more
doaj   +1 more source

High-Resolution X-ray Spectroscopy of the Interstellar Medium: Structure at the Oxygen Absorption Edge [PDF]

open access: yes, 2003
(Abbrev.) We present high-resolution spectroscopy of the oxygen K-shell interstellar absorption edge in 7 X-ray binaries using the HETGS onboard Chandra.
Adrienne M. Juett   +4 more
core   +1 more source

Status of ultrachemical analysis for semiconductors [PDF]

open access: yes, 1966
Status of ultratrace chemical analyses of materials for semiconductors was studied. This study covered atomic absorption spectroscopy, emission spectroscopy, and activation analyses.
Dilts, R. V., Hall, L. C.
core   +2 more sources

Development of a fast screening method for the direct determination of chlorinated persistent organic pollutants in fish oil by high-resolution continuum source graphite furnace molecular absorption spectrometry [PDF]

open access: yes, 2017
The authors are grateful to the Conselho Nacional de Desenvolvimento Científico and Tecnológico (CNPq); the present research was mostly financed through Project no. CNPq 406877/2013-0.
Cadorim, Heloisa R.   +8 more
core   +1 more source

Structural instability impairs function of the UDP‐xylose synthase 1 Ile181Asn variant associated with short‐stature genetic syndrome in humans

open access: yesFEBS Letters, EarlyView.
The Ile181Asn variant of human UDP‐xylose synthase (hUXS1), associated with a short‐stature genetic syndrome, has previously been reported as inactive. Our findings demonstrate that Ile181Asn‐hUXS1 retains catalytic activity similar to the wild‐type but exhibits reduced stability, a looser oligomeric state, and an increased tendency to precipitate ...
Tuo Li   +2 more
wiley   +1 more source

Two-dimensional fluorescence spectroscopy of uranium isotopes in femtosecond laser ablation plumes

open access: yesScientific Reports, 2017
We demonstrate measurement of uranium isotopes in femtosecond laser ablation plumes using two-dimensional fluorescence spectroscopy (2DFS). The high-resolution, tunable CW-laser spectroscopy technique clearly distinguishes atomic absorption from 235U and
Mark C. Phillips   +5 more
doaj   +1 more source

Quantitative estimatation of lead, cadmium. and nickel contents by means of Atomic Absorption Spectroscopy in fruitbodies of some macromycetes in Poland

open access: yesActa Mycologica, 2014
The contents of lead, cadmium and nickel in dry fruitbodies of 13 species of macromycetes collected in Poland from 33 natural habitats by means of Atomic Absorption Spectroscopy (AAS) were estimated.
Jan Grzybek, Bogusław Janczy
doaj   +1 more source

Structural biology of ferritin nanocages

open access: yesFEBS Letters, EarlyView.
Ferritin is a conserved iron‐storage protein that sequesters iron as a ferric mineral core within a nanocage, protecting cells from oxidative damage and maintaining iron homeostasis. This review discusses ferritin biology, structure, and function, and highlights recent cryo‐EM studies revealing mechanisms of ferritinophagy, cellular iron uptake, and ...
Eloise Mastrangelo, Flavio Di Pisa
wiley   +1 more source

Determination of Serum Lithium by Flame Emission Spectroscopy [PDF]

open access: yesActa Medica Iranica, 1976
Lithum can be de termined both by atomic absorption spectroscopy andflame emission spectroscopy. We have used the later method with a Zeiss Model pMQlI spectro photometer fitt ed with ante-chamber atomizer and a potensiome rric line recorder.
R. Nafissy
doaj   +2 more sources

Potassium Release from Biomass Particles during Combustion—Real-Time In Situ TDLAS Detection and Numerical Simulation

open access: yesApplied Sciences, 2021
Potassium (K) is one of the main and most hazardous trace species released to the gas-phase during thermochemical conversion of biomass. Accurate experimental data and models of K release are needed to better understand the chemistry involved.
Zhechao Qu   +2 more
doaj   +1 more source

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