Results 21 to 30 of about 1,903,576 (294)

Biological significance of chromium III for the human organism

open access: yesMedycyna Pracy, 2017
Currently, chromium is probably the most controversial transition metal. In recent publications it is clearly stated that it is not an essential micronutrient and should be considered to have a pharmacological effect. Conflicting scientific reports along with a huge amount of dietary supplements, as well as dietary and sports nutrients available on the
Anna Piotrowska   +3 more
openaire   +3 more sources

Maintaining ecological soil functions - techniques in organic farming systems [PDF]

open access: yes, 2000
The ecological soil functions (e.g. habitat and living space, production and utilization, ecological regulation) have to be taken into account and maintained by farming systems.
Beste, Andrea
core   +1 more source

Investigation of electroless nickel undercoat for duplex nickel chromium electrodeposition onto aluminium and its alloys [PDF]

open access: yes, 2009
A thesis submitted in partial fulfillment of the requirement of the University of Wolverhampton for the Degree of Master of Philosophy.The study investigates the deposition of a multilayer coating onto two aluminium alloys: Al 1050 and Al 6061.
Khan, Muhammad Enam
core   +3 more sources

Efficacy of photocatalytic removal of Chromiumin the presence oforganic matter from aqueous medium by useing TiO2 nanoparticles synthesized by sol gel [PDF]

open access: yesمجله علمی دانشگاه علوم پزشکی کردستان, 2018
Background and Aim: Widespread use of Chromium and their compounds in many industries, including plating, steel production, and wood protection and tanning leather, can result in the discharge of large amounts of pollutants to receiving waters, leading ...
Zandsalimi Y   +3 more
doaj   +1 more source

Concentrator cell methodology in the regeneration and recycle of chromium etching solutions using membrane technology [PDF]

open access: yes, 2006
The regeneration of chromium (VI) and the recovery of etched copper from chromium etching solutions by electrodialysis is improved by the addition of a concentrator cell, using ion exchange resins or activated carbon cloth as concentrator media, in the ...
Ganguli, B, Grimes, SM, Chaudhary, AJ
core   +1 more source

The contribution of research to the development of organic farming in Europe [PDF]

open access: yes, 2002
On national as well as on EU level, research funds should be directed substantially towards organic farming in order to improve the economic and ecological performance of organic farming.
Niggli, Urs
core   +1 more source

Organic Chromium Sources as a Strategy to Improve Performance, Carcass Traits, and Economic Return in Lambs Finishing at Heavier Weights

open access: yesAgriculture
Thirty-six Dorper × Katahdin intact male lambs [44.0 ± 0.27 kg initial body weight (BW)] were used in a randomized complete block design to evaluate the effects of supplementing different organic chromium (OrCr) sources on growth performance, dietary ...
Alejandro Rivera-Villegas   +7 more
doaj   +1 more source

Disposal of highly toxic waste chromium solutions [PDF]

open access: yesE3S Web of Conferences
The aim of the study is to determine the effect of organic reductants (sawdust) on the degree of reduction of chromium (VI) ions in the complex processing of waste chromium-containing solution (electrolyte) of plating production, as at the same time to ...
Mukhammadiev Komil   +3 more
doaj   +1 more source

Speciation of chromium through aqueous two-phase extraction of complexes of Cr(III) with 4-(2-pyridylazo)resorcinol and Cr(VI) with 1,5-diphenylcarbazide [PDF]

open access: yesJournal of the Serbian Chemical Society, 2016
A green, sensitive and selective methods are described for the preconcentration and speciation of chromium species in natural waters. The developed methods are based on the environmentally friendly aqueous two-phase extraction with a system ...
Simonova Tamara N.   +2 more
doaj   +1 more source

Somatostatin receptor 4 (SSTR4) is a tumor suppressor in cutaneous and head & neck squamous cell carcinomas

open access: yesMolecular Oncology, EarlyView.
This study identifies somatostatin receptor 4 (Sstr4) as a critical tumor suppressor against skin and head/neck cancers (HNSCC, cSCC, and BCC). The loss of Sstr4 removes a check on cell growth, causing hyperactivation of the MAPK‐ERK signaling pathway (↑).
Ali Taqvi   +6 more
wiley   +1 more source

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