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971.
A robust and hierarchical approach for the automatic co-registration of intensity and visible images
Diego González-Aguilera Pablo Rodríguez-Gonzálvez David Hernández-López José Luis Lerma 《Optics & Laser Technology》2012,44(6):1915-1923
This paper presents a new robust approach to integrate intensity and visible images which have been acquired with a terrestrial laser scanner and a calibrated digital camera, respectively. In particular, an automatic and hierarchical method for the co-registration of both sensors is developed. The approach integrates several existing solutions to improve the performance of the co-registration between range-based and visible images: the Affine Scale-Invariant Feature Transform (A-SIFT), the epipolar geometry, the collinearity equations, the Groebner basis solution and the RANdom SAmple Consensus (RANSAC), integrating a voting scheme. The approach presented herein improves the existing co-registration approaches in automation, robustness, reliability and accuracy. 相似文献
972.
Ruthenium Complex “Light Switches” that are Selective for Different G‐Quadruplex Structures 下载免费PDF全文
Erin Wachter Diego Moyá Dr. Sean Parkin Dr. Edith C. Glazer 《Chemistry (Weinheim an der Bergstrasse, Germany)》2016,22(2):550-559
Recognition and regulation of G‐quadruplex nucleic acid structures is an important goal for the development of chemical tools and medicinal agents. The addition of a bromo‐substituent to the dipyridylphenazine (dppz) ligands in the photophysical “light switch”, [Ru(bpy)2dppz]2+, and the photochemical “light switch”, [Ru(bpy)2dmdppz]2+, creates compounds with increased selectivity for an intermolecular parallel G‐quadruplex and the mixed‐hybrid G‐quadruplex, respectively. When [Ru(bpy)2dppz‐Br]2+ and [Ru(bpy)2dmdppz‐Br]2+ are incubated with the G‐quadruplexes, they have a stabilizing effect on the DNA structures. Activation of [Ru(bpy)2dmdppz‐Br]2+ with light results in covalent adduct formation with the DNA. These complexes demonstrate that subtle chemical modifications of RuII complexes can alter G‐quadruplex selectivity, and could be useful for the rational design of in vivo G‐quadruplex probes. 相似文献
973.
Real‐Time Chemical Analysis of E‐Cigarette Aerosols By Means Of Secondary Electrospray Ionization Mass Spectrometry 下载免费PDF全文
Dr. Diego García‐Gómez Dr. med. Thomas Gaisl César Barrios‐Collado Dr. Guillermo Vidal‐de‐Miguel Prof. Dr. med. Malcolm Kohler Prof. Dr. Renato Zenobi 《Chemistry (Weinheim an der Bergstrasse, Germany)》2016,22(7):2452-2457
Chemical analysis of aerosols collected from electronic cigarettes (ECs) has shown that these devices produce vapors that contain harmful and potentially harmful compounds. Conventional analytical methods used for the analysis of electronic cigarettes do not reflect the actual composition of the aerosols generated because they usually neglect the changes in the chemical composition that occur during the aerosol generation process and after collection. The aim of this work was to develop and apply a method for the real‐time analysis of electronic cigarette aerosols, based on the secondary electrospray ionization technique coupled to high‐resolution mass spectrometry, by mimicking the “vaping” process. Electronic cigarette aerosols were successfully analyzed and quantitative differences were found between the liquids and aerosols. Thanks to the high sensitivity shown by this method, more than 250 chemical substances were detected in the aerosols, some of them showing a high correlation with the operating power of the electronic cigarettes. The method also allows proper quantification of several chemical components such as alkaloids and flavor compounds. 相似文献
974.
Diego Montaño Isabel Bandrés Luz M. Ballesteros Carlos Lafuente Félix M. Royo 《Journal of solution chemistry》2011,40(7):1173-1186
In the present work we report experimental surface tensions for binary mixtures of isomeric chlorobutanes with methyl tert-butyl
ether from 283.15 to 303.15 K, measured with a drop volume tensiometer. From these experimental data the corresponding surface
tension deviations were calculated and correlated using a Redlich-Kister type polynomial. Finally, we include the calculation
of excess surface compositions for all of the mixtures from 288.15 K to 308.15 K. 相似文献
975.
Structural Chemistry - The adsorption of molecules on metal surfaces within confined spaces is key to industrially relevant processes such as catalytic conversions, separations, or gas storage.... 相似文献
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