Results 101 to 110 of about 84,721 (308)
, 2008 A method for the preconcentration of the total chromium based on coprecipitation with cerium (IV) hydroxide is proposed for determination of chromium by flame atomic absorption spectrometry.
Umit Divrikli +7 more
core +1 more source
Nutrición HospitalariaIntroduction: Chromium is an essential trace mineral for carbohydrate and lipid metabolism, which is currently prescribed to control diabetes mellitus.
Ismael San Mauro Martín +6 more
doaj +1 more source
Advanced Engineering Materials, EarlyView.Geometry‐driven thermal behavior in wire‐arc additive manufacturing (WAAM) influences microstructural evolution during nonequilibrium solidification of a chemically complex Fe–Cr–Nb–W–Mo–C nanocomposite system. By comparing different deposits configurations, distinct entropy–cooling rate correlations, segregation, and carbide evolution are revealed ...
Blanca Palacios +5 more
wiley +1 more source
CONDUCTOMETRIC TESTS AND TOTAL CHROMIUM LEACHABILITY IN AQUEOUS SOLUTION, FROM TANNED LEATHER WASTE
, 2020 Tanning is the most important operation in leather processing, which turned the leather into a non-putrefying material. Tanning may be carried out with chromium salts (III) or with a variety of other tanning agents. In present days, tanning with chromium
MANCIULA, Dorin +3 more
core +2 more sources
HeliyonThis study is focused on reducing total chromium level in tannery wastewater through the electrocoagulation process, in order to comply with the maximum permissible limits (MPL) and to determine the effects from its main operating factors.
Edwar Aguilar-Ascón +2 more
doaj +1 more source
Journal of Korean Society of Occupational and Environmental Hygiene, 2015 ABSTRACT Objectives: The objective of this study was to determine characteristics of workers' exposures to airborne total and hexavalent chromium by job title in electroplating processes. Methods: Total Cr was determined through a modified method based on NIOSH Method 7024.
Gwang Yong Yi +2 more
openaire +2 more sources
Advanced Engineering Materials, EarlyView.Thermomechanical fatigue tests of laser beam powder bed fusion (PBF‐LB) Inconel 718 show that the additively manufactured material reaches almost the lifetimes of conventionally‐rolled material under no‐dwell conditions. Introducing dwell times at the maximum temperature markedly reduces the lifetimes due to pronounced grain boundary sliding associated
Stefan Guth +6 more
wiley +1 more source
Near‐Field Electrospinning Micro‐Printhead Achieves Precise Control of Nanofiber Deposition
Advanced Engineering Materials, EarlyView.A micro‐printhead for near‐field electrospinning enables reproducible deposition of polymer nanofibers with diameters below 50 nm. Systematic parameter studies uncover the mechanisms linking operating conditions to fiber morphology, paving the way for precise and low‐cost nanoscale 3D manufacturing.As a high‐resolution, cost‐effective, and rapid ...
Han Xu, Dario Mager, Jan G. Korvink
wiley +1 more source
Majalah Kulit, Karet, dan Plastik, 2004 The aim of this study is to use waste sludge from leather tanning industry for compos and its influence to chromium content in the treatment plant (Zea mays and Brassica chinensis L).
Sri Sutyasmi +3 more
doaj +1 more source
Advanced Engineering Materials, EarlyView.A combined finite element and phase‐field approach predicts the evolution of microstructure during the directional solidification of Ni‐based superalloys. The model reveals how withdrawal rate, temperature gradient, and wall thickness control the dendrite spacing, highlighting the strong effect of surface regions in thin sections where dendrite growth ...
Sean Böhm +3 more
wiley +1 more source