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Construction of artificial pigment-protein antennae

Description: Photosynthesis is a complex process which results in the conversion of solar radiation into chemical energy. This chemical energy is then used as the free energy source for all living organisms. In its basic form, photosynthesis can be described as the light-activated synthesis of carbohydrates from the simple molecules of water and carbon dioxide: 6H{sub 2}O + 6 CO{sub 2} light C{sub 6}H{sub 12}O{sub 6} + 6 O{sub 2} This basic mechanism actually requires numerous reaction steps. The two primar… more
Date: January 10, 1997
Creator: Sibbald, J.
Partner: UNT Libraries Government Documents Department
open access

Physical metallurgy and properties of TiNiSn and PtMnSb

Description: The single crystals of TiNiSn and polycrystalline PtMnSb were grown by the flux and melt cooling method. Their lattice parameters and structures were determined by x-ray diffraction. The effect of impurities on the growth of TiNiSn single crystals was investigated. It was found that the concentration of chlorine plays a key role in determining the chemical composition of the phases that are formed. The heat capacity and magnetic susceptibility of TiNiSn was measured in a temperature range from … more
Date: January 10, 1997
Creator: Zhong, B.
Partner: UNT Libraries Government Documents Department
open access

Scanning probe microscopies for the creation and characterization of interfacial architectures: Studies of alkyl thiolate monolayers at gold

Description: Scanning probe microscopy (SPM) offers access to the structural and material properties of interfaces, and when combined with macroscopic characterization techniques results in a powerful interfacial development tool. However, the relative infancy of SPM techniques has dictated that initial investigations concentrate on model interfacial systems as benchmarks for testing the control and characterization capabilities of SPM. One such family of model interfacial systems results from the spontaneo… more
Date: January 10, 1997
Creator: Green, J.
Partner: UNT Libraries Government Documents Department
open access

A theoretical study of the electronic structure of Invar Fe*3Pt and related materials

Description: The Full Potential Linear Augmented Plane Wave (FPLAPW or FLAPW) method is used for a spin-polarized band calculation for ordered Fe{sub 3}Pt. As major purpose, the momentum distributions of the spin-polarized electrons are calculated and compared with results from a magnetic Compton scattering measurement. To get related information, the electronic behavior is also analyzed by examining the partial densities of states and the spatial electron distributions; the role of alloying effects is then… more
Date: January 10, 1997
Creator: Zuo, Zhiqi
Partner: UNT Libraries Government Documents Department
open access

Unique applications of solvent removal in inductively coupled plasma mass spectrometry

Description: Inductively coupled plasma mass spectrometry (ICP-MS) is the technique of choice for rapid, high precision, semiquantitative elemental and isotopic analysis for over 70 elements. Less than 20 years after the first mass spectrum was obtained by ICP-MS, this technique has applications in clinical chemistry, geochemistry, the semiconductor industry, the nuclear industry, environmental chemistry, and forensic chemistry. The determination of many elements, though, by ICP-MS is complicated by spectra… more
Date: January 10, 1997
Creator: Minnich, M.
Partner: UNT Libraries Government Documents Department
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