Abstract Purpose The Cunoniaceae are a major component of the New Caledonian flora with 91 endemic species that highly unusual in multiple metals hyperaccumulated different species. This makes it an ideal model system for studying nature hyperaccumulation phenomenon. Methods X-ray fluorescence spectroscopy (XRF) scanning all herbarium collections was undertaken at Herbarium Caledonia to reveal ...

Neural network predictions suggested that the strength of a high strength steel weldmetal with 7 wt-% nickel and 0.5 wt-% manganese could be increased significantly at moderate expense to impact toughness by additions of carbon. Based on this, three experimental weldmetals were produced with carbon contents between 0.03 and 0.11 wt-%. Mechanical test results were in agreement with predictions. ...

Analysis of nine composite soil samples, each made of three replicate core samples and their respective background samples collected from Okigwe, Nekede and Orji automobile mechanic villages were conducted. Metal concentrations (mg/kg) above the background levels in the top 100 cm soil profile ranges as follows: 748-70,606 (± 10114.3) for iron; 99-1090 ± 251.3 for lead; 186-600 ± 180 for mangan...

A facile approach composed of hydrothermal process and annealing treatment is proposed to directly grow cobalt-manganese composite oxide ((Co,Mn)3O4) nanostructures on three-dimensional (3D) conductive nickel (Ni) foam for a supercapacitor electrode. The as-fabricated porous electrode exhibits excellent rate capability and high specific capacitance of 840.2 F g(-1) at the current density of 10 ...

Understanding the reaction pathway and kinetics of solid-state phase transformation is critical in designing advanced electrode materials with better performance and stability. Despite the first-order phase transition with a large lattice mismatch between the involved phases, spinel LiMn1.5Ni0.5O4 is capable of fast rate even at large particle size, presenting an enigma yet to be understood. Th...

Abstract To meet UN Sustainable Development goals, a clean‐energy transition with minimal ecological impact from its raw‐material supply chain is essential. Polymetallic nodules lying unattached on the abyssal seafloor of Pacific Ocean's Clarion Clipperton Zone contain four critical metals (nickel, cobalt, manganese, copper) in large quantities, and International Seabed Authority may soon enact...

This review summarizes the most noteworthy achievements in field of C–O and C–N bond formation by hydroalkoxylation hydroamination reactions on unactivated alkenes (including 1,2- 1,3-dienes) promoted earth-abundant 3d transition metal catalysts based manganese, iron, cobalt, nickel, copper zinc. The relevant literature from 2012 until early 2021 has been covered.

Rare metals have become indispensable for the production of parts such as batteries, motors, and semiconductors, which are important achieving high functionality in products advanced industries decarbonized society xEV (electric vehicles) AI / IoT. As spread is promoted toward a society, demand in-vehicle lithium-ion batteries expected to increase significantly. Therefore, cobalt used positive ...

Single crystals of Mn 1.3 2Ni 0.85 Cu 0.83 BO 5 with the ludwigite structure were obtained by solution-melt method during spontaneous crystallization. The concentration copper, manganese and nickel ions was determined transmission microscopy. Manganese are included in compounds divalent trivalent states. study temperature field dependences showed that we have several magnetic transitions. first...

The recent study was carried out for the comparative analysis of heavy metals in Brassica campestris and Raphanus sativus irrigated with municipal waste water of Sargodha city. Field surveys were done for this experiment. Three experimental sites i.e Bhalwal road, Ajnala road and Faisalabad road were selected in Sargodha city for field surveys. Vegetables samples were collected from these sites...