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Heavy Metal Content and Antimicrobial Activities of Some Naturally Occurring Facial Cosmetics from South Eastern Nigeria
Heavy Metal Content Antimicrobial Activities Occurring Facial Cosmetics South Eastern Nigeria
2012/3/14
Heavy Metal Content and Antimicrobial Activities of Some Naturally Occurring Facial Cosmetics from South Eastern Nigeria.
Tetrahedral boron in naturally occurring tourmaline
Tetrahedral boron naturally occurring tourmaline
2012/4/1
Evidence for boron in both trigonal and tetrahedral coordination has been found in B magic-angle-spinning (MAS) nuclear magnetic resonance (NMR) spectra ofnatural, inclusion-free speci-mens of alumin...
Naturally occurring ferric iron sanidine from the Leucite Hills lamproite
ferric iron sanidine Leucite Hills lamproite
2012/4/5
Sanidine crystals precipitating from lamproitic magmascharacteristically contain ap-preciableamounts ofFeH. Sanidinegrainsfrom the LeuciteHillslamproites (Wyoming) have compositions in whichupto 70mol...
Naturally-Occurring Silicates as Carriers for Copper Catalysts Used in Methanol Conversion
Bentonite Copper catalysts Methanol dehydrogenation Sepiolite
2011/12/30
Bentonite- and sepiolite-supported copper catalysts have been prepared either by adsorption of Cu(II) from aqueous solutions of copper nitrate at pH …4.5 or by adsorption ofa [Cu(NH3)4]2+ complex from...
Some Naturally Occurring Illite-Smectite Interstratifications
Illite-Smectite Interstratifications Naturally
2012/2/17
Two different types of interstratified illite-smectite are found in a section of Paleozoic sediments in the Negev, Israel. One of these is detectable only by a decrease in peak width and a concomitant...
Quantitative Analysis of Naturally Occurring Multicomponent Mineral Systems by X-ray Diffraction
Quantitative Analysis Naturally Multicomponent Mineral Systems X-ray Diffraction
2012/2/21
A theory for the quantitative analysis of multicomponent mineral systems by means of X-ray diffraction is presented. A linear interaction between mineral pairs is postulated. The theory is verified ex...