Results 21 to 30 of about 7,559,772 (297)

Reactivity of a trimethylstannyl molybdenum complex in mesoporous MCM-41 [PDF]

open access: yes, 1994
A highly thermostable tin–molybdenum complex is encapsulated into the hexagonal mesoporous channel host MCM-41 and thermally transformed into supported metal ...
Möller, Karin   +5 more
core   +1 more source

Metal-Mediated Organocatalysis in Water: Serendipitous Discovery of Aldol Reaction Catalyzed by the [Ru(bpy)2(nornicotine)2]2+ Complex

open access: yes, 2022
The [Ru­(bpy)2(Nor)2]2+ complex (Nor = nornicotine) is an efficient catalyst for the aldol reaction of acetone with activated benzaldehydes in a buffered aqueous solution.
Miguel A. Romero   +9 more
core   +1 more source

Fabrication of crystals from single metal atoms [PDF]

open access: yes, 2014
Metal nanocrystals offer new concepts for the design of nanodevices with a range of potential applications. Currently the formation of metal nanocrystals cannot be controlled at the level of individual atoms. Here we describe a new general method for the
Smith, C.J.   +34 more
core   +1 more source

Unusual DNA binding modes for metal anticancer complexes [PDF]

open access: yes, 2009
DNA is believed to be the primary target for many metal-based drugs. For example, platinum-based anticancer drugs can form specific lesions on DNA that induce apoptosis.
Pizarro, Ana M., Sadler, P. J.
core   +1 more source

Study on Pyrolysis Pretreatment Characteristics of Spent Lithium-Ion Batteries

open access: yesSeparations, 2023
In recent years, the rapid development of the new energy vehicle industry has led to an increase in the production of used lithium-ion batteries. The recycling of waste lithium-ion batteries is expected to alleviate the shortage of valuable metals in ...
Hao Wang   +5 more
doaj   +1 more source

Process Mineralogy Analysis of Copper-zinc Sulfide Ore from the Simao Region, Yunnan Province

open access: yesYankuang ceshi, 2014
There are large amounts of refractory copper-zinc polymetallic sulfide ore resources in the Simao region of Yunnan Province. Traditional mineral identification under microscope is difficult to automatically accurately determine copper, zinc and other ...
XIE Hai-yun   +5 more
doaj   +2 more sources

Preparation of Potassium Dichromate Crystals from the Chromite Concentrate by Microwave Assisted Leaching

open access: yesCrystals, 2017
In the present investigation, the oxidizing roasting process of chromite with sodium carbonate to prepare potassium dichromate crystals was studied in the microwave field with air, by heating the chromite and sodium carbonate.
Hua Liu   +5 more
doaj   +1 more source

Influence of temperature on the texture and magnetic properties of IrMn-based spin-valve multilayers

open access: yesAIP Advances, 2019
Top-pinning, spin-valve multilayer films with the structure Ta (5 nm)/Co75Fe25 (5 nm)/Cu (2.5 nm)/Co75Fe25 (5 nm)/Ir20Mn80 (12 nm)/Ta (8 nm) were prepared by high-vacuum DC magnetron sputtering.
Xianjin Qi   +4 more
doaj   +1 more source

Waste phenolic resin derived activated carbon by microwave-assisted KOH activation and application to dye wastewater treatment

open access: yesGreen Processing and Synthesis, 2019
The waste phenolic resin was utilized as the raw material to prepare activated carbon (AC) used KOH as the activating agent via microwave heating. The phenolic resin was carbonized at 500°C and then performed with a KOH/Char ratio of 4 and microwave ...
Hu Wenhai   +6 more
doaj   +1 more source

Interaction of Manganese Ions with Scheelite Surfaces and Its Effect on Collector Adsorption and Flotation

open access: yesSeparations, 2022
Tungsten is a commercially important metal element that usually coexists with a variety of non-ferrous metals, which makes its extraction difficult. Scheelite is a commonly occurring tungsten-containing ore with the formula CaWO4.
Xiao Wang   +7 more
doaj   +1 more source

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