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161.
By means of wet oxygen exposure the stability of RTO anodes has been observed. The deactivation is due to ruthenium loss via unstable higher surface oxides in a long time regime. As follows after uneffective subsurface annealing procedure the catalytic durability is reduced drastically by erosion stimulated increasing ruthenium loss of inhomogeneous active layer surfaces. 相似文献
162.
Journal of Chemical Crystallography - A new Group 2 bimetallic nitride fluoride phase of approximate composition SrCaNF has been prepared and characterized via high resolution single crystal X-ray... 相似文献
163.
Combined photoemission core level and satellite structure investigations of pyrolytic titanium-rich TixRu1−x-oxide layers (0.90 ≦ x ≦ 0.97) and RuO2 layers on titanium are used to gain structural and compositional information about these electro-catalytically active surfaces. By means of this method deviations from stoichiometry, the formation of carbon interstitials and the growth of anatase by ruthenium loss could be pointed out. 相似文献
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The etch pattern of (001) and (110) LEC-GaP doped with sulphur (NDNA in the range from 3–7 × 1017 cm−3) do not only show dislocation etch pits but fine pits, so-called “saucer pits” (S-pits). The distribution of S-pits, their etching behaviour and transmission electron microscope observations of etched samples indicated a clear correlation between S-pits and microdefects (fauted-, prismatic dislocation loops and precipitates). 相似文献
167.
Vapour phase epitaxial layers of InP were deposited onto (111)A-, (111)B-, (001)-, and (110)-oriented GaAs substrates in the InP/PCl3/H2 system using a close-space technique. It is shown that the dependence of the layer quality on the substrate orientation is due to differences in the initial growth stages. Results on the growth rates and the electrical properties of the layers are reported. 相似文献
168.
Laura Tblick Severien Van Keer Annemie De Smet Pierre Van Damme Michelle Laeremans Alejandra Rios Cortes Koen Beyers Vanessa Vankerckhoven Veerle Matheeussen Renee Mandersloot Arno Floore Chris J. L. M. Meijer Renske D. M. Steenbergen Alex Vorsters 《Molecules (Basel, Switzerland)》2021,26(7)
The potential of first-void (FV) urine as a non-invasive liquid biopsy for detection of human papillomavirus (HPV) DNA and other biomarkers has been increasingly recognized over the past decade. In this study, we investigated whether the volume of this initial urine stream has an impact on the analytical performance of biomarkers. In parallel, we evaluated different DNA extraction protocols and introduced an internal control in the urine preservative. Twenty-five women, diagnosed with high-risk HPV, provided three home-collected FV urine samples using three FV urine collection devices (Colli-Pee) with collector tubes that differ in volume (4, 10, 20 mL). Each collector tube was prefilled with Urine Conservation Medium spiked with phocine herpesvirus 1 (PhHV-1) DNA as internal control. Five different DNA extraction protocols were compared, followed by PCR for GAPDH and PhHV-1 (qPCR), HPV DNA, and HBB (HPV-Risk Assay), and ACTB (methylation-specific qPCR). Results showed limited effects of collection volume on human and HPV DNA endpoints. In contrast, significant variations in yield for human endpoints were observed for different DNA extraction methods (p < 0.05). Additionally, the potential of PhHV-1 as internal control to monitor FV urine collection, storage, and processing was demonstrated. 相似文献
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The theoretical concept of the computer program is based on the compartment theory for the 3-pool model using single pulse administration of the tracer. The code estimates the model parameters by means of the non-linear method of least squares fit under steady state conditions. Furthermore the parameters of the protein metabolism are calculated. The program works interactively and allows reading and modifying the experimental 15N tracer data via terminal and controlling the program. 相似文献