874 research outputs found
Switchable fluorescent and solvatochromic molecular probes based on 4-amino-N-methylphthalimide and a photochromic diarylethene.
Get PDFNew fluorescent photochromic compounds (1-H and 1-Boc)have been synthesized and characterized in different solvents.The fluorescence emission can be switched “on” and“off” with visible light and UV, respectively, by means of thephotochromic reaction. The emission wavelength and efficiencystrongly depend on the polarity of the solvent. Thecompounds show a positive solvatochromic effect in theemission maxima, and their fluorescence quantum yield decreasesas the solvent’s polarity increases (from cyclohexaneto dioxane). In solvents more polar than dioxane the emissionis too weak and therefore undetectable, and thus 1-H and 1-Boc behave as “normal” photochromic compounds. The photochromic reaction is also sensitive to the environment. A decreaseof more than an order of magnitude was found for thequantum yield of the colouring reaction (ΦOFCF) for 1-H inethanol compared with cyclohexane, and an about threefolddecrease in ΦOFCF was observed for the compound 1-Bocin polar solvents (compared with apolar solvents). For bothcompounds the ring-opening reaction was found not to dependenton the solvent. The novel fluorescent molecularswitches 1-H and 1-Boc are able to probe the polarity of theirmicroenvironment.Fil: Yan, Sergey F.. Max Planck Institute for Biophysical Chemistry; AlemaniaFil: Belov, Vladimir N.. Max Planck Institute for Biophysical Chemistry; AlemaniaFil: Bossi, Mariano Luis. Max Planck Institute for Biophysical Chemistry; Alemania. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Química, Física de los Materiales, Medioambiente y Energía. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Química, Física de los Materiales, Medioambiente y Energía; ArgentinaFil: Hell, Stefan W.. Max Planck Institute for Biophysical Chemistry; Alemani
Application of the integral equation method to acoustic wave diffraction from elastic bodies in a fluid layer
No full textValentin E. Belov, Sergey M. Gorsky, Alexey A. Zalezsky and Alexey Y. Zinovye
Энергоэффективная система струйной аэрации для биохимической очистки сточных вод и обработки осадка
Get PDFDmukhaylo, Evgeny Ivanovich; Belov, Sergey Grigorievich; Belov, V. S. Energy-efficient jet aeration system for biochemical wastewater treatment and sludge treatmen
Малые очистные сооружения канализации с использованием лопастных и струйных насосов-аэраторов
Get PDFBelov, Sergey Grigorievich; Dmukhaylo, Evgeny Ivanovich. Small sewage treatment plants using vane and jet aerator pump
Патент 8938 BY
No full textVolchek, Alexander Alexandrovich; Dashkevich, Denis Nikolaevich; Dmukhaylo, Evgeny Ivanovich; Belov, Sergey Grigorievich. Liquid Aeration Devic
Устройство для аэрации жидкости
Get PDFVolchek, Aleksandr Aleksandrovich; Dmukhaylo, Evgeny Ivanovich; Uss, Natalya Viktorovna; Belov, Sergey Grigorievich. Device for liquid aeratio
Патент 6053 BY
No full textVolchek, Alexander Alexandrovich; Dmukhaylo, Evgeny Ivanovich; Belov, Sergey Grigorievich; Volchek, Anastasia Alexandrovna. Water wel
(Re)Invention of memory. Constitutional narratives in Central European preambles – sombre or luminous?
No full textHaving faced a number of political ruptures over the course of the past one hundred and twenty five years, Central European countries have a particularly close relationship with the past, the collective memories of which are reinterpreted unusually often (compared to their Western counterparts) to fit the most recent political narratives. These omnipresent discourses, subject to the memory politics of the authorities, also found their way to the preambles of the respective countries’ constitutions in the aftermath of 1989, on the one hand setting the tone for their interpretation and, on the other hand, elevating the national imageries through their setting in stone as an introductory element of the highest law of the land. The purpose of this chapter is to engage comparatively with the collective memories present in the preambles of the region’s constitutions, focusing on the role of the sombre—the negative—and the luminous—the positive—collective memories enshrined within. In the first, theoretical part of the paper, the author introduces the key ideas of the preamble and collective memory, proposing his own reinterpretation of Hobsbawm’s concept of the invention of tradition as reinvention of memory. The second part of the paper is devoted to comparative engagement with preambles of all Central European countries, following the definition of Central Europe recently put forward by the author, analysing them through the theoretical lens established earlier. Ultimately, in the third part of the chapter, the author discusses the findings of his investigations, pondering the similarities and differences between the different Central European preambles and answering the eponymous question in an attempt to uncover the spirit of the region
Перспективная технология дезодорации и обеззараживания выбросов от насосных станций и очистных сооружений систем канализации
Get PDFBelov, Sergey Grigorievich; Dmukhaylo, Evgeny Ivanovich; Naumchik, Grigory Ostapovich. Promising technology for deodorizing and disinfecting emissions from pumping stations and sewage treatment plant
Технические и технологические аспекты аэрации рыбохозяйственных водоемов
Get PDFVolchek Alexander Alexandrovich, Dmukhailo Evgeny Ivanovich, Belov Sergey Grigorievich, Dashkevich Denis Nikolaevich. Technical and technological aspects of aeration of fishery reservoir
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