We report on a previously undescribed combination of endocrine and neuroectodermal abnormalities in four sibs from Burma. These abnormalities include low growth hormone levels in response to provocative stimuli, delayed puberty associated with prepubertal levels of gonadotropins in the males and pubertal levels of gonadotropins in the females, type II diabetes mellitus with elevated insulin levels, mild mental retardation, sensori-neural deafness, and alopecia without pili torti. They also had a characteristic facial appearance and fleshy hands and feet. This family appears to have a previously undescribed combination of endocrine and neuroectodermal abnormalities.

Here, we address the issue of finding correct CF2/CF3 area ratios from X-ray photoelectron spectroscopy (XPS) C 1s narrow scans of materials containing −CH2CH2(CF2) n CF3 (n = 0, 1, 2, ...) moieties. For this work, we modified silicon wafers with four different fluorosilanes. The smallest had a trifluoropropyl (n = 0) moiety, followed by nonafluorohexyl (n = 3), tridecafluoro (n = 5), and finally, heptadecafluoro (n = 7) moieties. Monolayer deposition of the fluorosilanes was confirmed by spectroscopic ellipsometry, wetting, and XPS. Analysis of the trifluoropropyl (n = 0) surface and a sample of polytetrafluoroethylene provided pure-component XPS spectra for −CF3 and −(CF2) n – moieties, respectively. Initial XPS C 1s peak fitting, which follows the literature precedent, was not entirely adequate. To address this issue, six different fitting approaches with increasing complexity and/or input from the Hartree–Fock theory (HF) were considered. Ultimately, we show that by combining HF results with empirical analyses, we obtain more accurate CF2/CF3 area ratios while maintaining high-quality fits.

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Metal-organic frameworks (MOFs) have recently emerged as efficient self-sacrificial templates to fabricate porous carbon-supported metal nanoparticles (NPs). Due to synergistic effects, the catalysts containing bimetallic NPs represent an active frontier...

Metal-Organic Frameworks (MOFs) are an important class of materials that are gaining increasing relevance for many fields including thin films, CO2 capture, photovoltaics, and catalysts. MOF mediated synthesis (MOFMS) is...

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Modifying active species loading, particle size, and distribution on a support is an effective method for tuning catalyst activity. In this work, a copper catalyst anchored on titania was synthesized using the deposition-precipitation method at low weight % in order to obtain a highly dispersed catalyst (1-Cu/ TiO 2 ). The interactions between the copper and TiO 2 support contribute to the physical and chemical properties of the catalyst. Transmission electron micrographs indicate copper nanoparticles with ∼ 2 nm diameter with a fairly uniform distribution across the TiO 2 particles. This synthetic approach yields a catalyst that is more active than similar precious metal catalysts, and therefore is a possible approach for creating highly efficient catalysts from economic materials.

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