Oxidative leaching of a Vietnamese chromite ore in highly concentrated potassium hydroxide aqueous solution at 300°C and atmospheric pressure

2005 ◽  
Vol 18 (5) ◽  
pp. 527-535 ◽  
Author(s):  
H.-B. Xu ◽  
S.-L. Zheng ◽  
Y. Zhang ◽  
Z.-H. Li ◽  
Z.-K. Wang
Keyword(s):  
Aqueous Solution ◽  
Atmospheric Pressure ◽  
Potassium Hydroxide ◽  
Chromite Ore ◽  
Oxidative Leaching

A Simple Synthesis of the Anticancer Drug Altretamine

2020 ◽  
Vol 17 (8) ◽  
pp. 628-630
Author(s):  
Vu Binh Duong ◽  
Pham Van Hien ◽  
Tran Thai Ngoc ◽  
Phan Dinh Chau ◽  
Tran Khac Vu
Keyword(s):  
Aqueous Solution ◽  
Anticancer Drug ◽  
Potassium Hydroxide ◽  
Large Scale ◽  
Synthesis Method ◽  
Practical Method ◽  
Cyanuric Chloride ◽  
Simple Synthesis ◽  
High Yield ◽  
One Step

A simple and practical method for the synthesis on a large scale of altretamine (1), a wellknown antitumor drug, has been successfully developed. The synthesis method involves the conversion of cyanuric chloride (2) into altretamine (1) by dimethylamination of 2 with an aqueous solution of 40% dimethylamine and potassium hydroxide in 1, -dioxan 4in one step to give altretamine (1) in high yield.

Circuit Pattern cu Deposition on Polyimide Surface Using ArF Excimer Laser

1998 ◽  
Vol 546 ◽  
Author(s):  
M. Tomita ◽  
M. Murahara
Keyword(s):  
Thin Film ◽  
Aqueous Solution ◽  
Excimer Laser ◽  
Copper Sulfate ◽  
Electroless Plating ◽  
Atmospheric Pressure ◽  
Hydrogen Atoms ◽  
Arf Excimer Laser ◽  
Cu Thin Film ◽  
Copper Substitution

AbstractCircuit patterned nucleation of copper atoms onto polyimide surface was demonstrated by using ArF excimer laser (λ =193nm) and copper sulfate aqueous solution at an atmospheric pressure. Photo-excited C-H bonds of the polyimide surface were effectively dehydrated with hydrogen atoms which were photodissociated from the water. The dangling bonds of the dehydrated hydrogen atoms were combined with the oxygen and the copper atoms which were photodissociated by copper-sulfate aqueous solution. Thus, C-O-Cu bonds were formed on the surface. After this copper substitution, it was carried out onto the nucleated parts by usual electroless plating at 70°C. In this process, the conductive circuit pattern Cu thin film was deposited on polyimide surface.

scholarly journals Synthesis and Antimicrobial Activity of Some Chalcone Derivatives

2008 ◽  
Vol 5 (3) ◽  
pp. 461-466 ◽  
Author(s):  
Y. Rajendra Prasad ◽  
A. Lakshmana Rao ◽  
R. Rambabu
Keyword(s):  
Aqueous Solution ◽  
Antimicrobial Activity ◽  
Potassium Hydroxide ◽  
Room Temperature ◽  
Antimicrobial Agents ◽  
Aromatic Aldehydes ◽  
Plate Method ◽  
H Nmr ◽  
Antibacterial And Antifungal Activities ◽  
Antibacterial And Antifungal

In an effort to develop antimicrobial agents, a series of chalcones were prepared by Claisen-Schmidt condensation of appropriate acetophenones with appropriate aromatic aldehydes in the presence of aqueous solution of potassium hydroxide and ethanol at room temperature. The synthesized compounds were characterized by means of their IR,1H-NMR spectral data and elemental analysis. All the compounds were tested for their antibacterial and antifungal activities by the cup plate method.

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