312 research outputs found
High sensitivity Cavity Ring Down spectroscopy of 18O enriched carbon dioxide between 5850 and 7000 cm-1: Part III-Analysis and theoretical modeling of the 12C17O2, 16O12C17O, 17O12C18O, 16O13C17O and 17O13C18O spectra
More than 19,700 transitions belonging to 11 isotopologues of carbon dioxide
have been assigned in the room temperature absorption spectrum of highly 18O
enriched carbon dioxide recorded by very high sensitivity CW-Cavity Ring Down
spectroscopy between 5851 and 6990 cm-1 (1.71-1.43 \mum). This third and last
report is devoted to the analysis of the bands of five 17O containing
isotopologues present at very low concentration in the studied spectra:
16O12C17O, 17O12C18O, 16O13C17O, 17O13C18O and 12C17O2 (627, 728, 637, 738 and
727 in short hand notation). On the basis of the predictions of effective
Hamiltonian models, a total of 1759, 1786, 335, 273 and 551 transitions
belonging to 24, 24, 5, 4 and 7 bands were rovibrationally assigned for 627,
728, 637, 738 and 727, respectively. For comparison, only five bands were
previously measured in the region for the 728 species. All the identified bands
belong to the \deltaP=8 and 9 series of transitions, where P=2V1+V2+3V3 is the
polyad number (Vi are vibrational quantum numbers). The band-by-band analysis
has allowed deriving accurate spectroscopic parameters of 61 bands from a fit
of the measured line positions. Two interpolyad resonance perturbations were
identified
A room temperature CO line list with ab initio computed intensities
Atmospheric carbon dioxide concentrations are being closely monitored by
remote sensing experiments which rely on knowing line intensities with an
uncertainty of 0.5% or better. We report a theoretical study providing
rotation-vibration line intensities substantially within the required accuracy
based on the use of a highly accurate {\it ab initio} dipole moment surface
(DMS). The theoretical model developed is used to compute CO intensities
with uncertainty estimates informed by cross comparing line lists calculated
using pairs of potential energy surfaces (PES) and DMS's of similar high
quality. This yields lines sensitivities which are utilized in reliability
analysis of our results. The final outcome is compared to recent accurate
measurements as well as the HITRAN2012 database. Transition frequencies are
obtained from effective Hamiltonian calculations to produce a comprehensive
line list covering all CO transitions below 8000 cm
and stronger than 10 cm / molecule at ~
The Relevance of Using Electronic Control and Accounting Systems in the Education System
В данной статье представлены результаты социологического опроса, проведенного в Муниципальном автономном общеобразовательном учреждении — гимназии № 13 среди учащихся и их родителей. Автор обозначил факторы, влияющие на использование электронной системы «Сетевой город. Образование», и проанализировал степень ее применения, а также уровень удовлетворенности данной системой конечным потребителем услуги.This article presents the results of a sociological survey conducted at the Municipal Autonomous Education Institution — gymnasium school No. 13 among students and their parents. The author identified the factors affecting the use of the electronic system “Network City. Education” and was analyzed the degree of its application, as well as the level of satisfaction with this system by the end user of services
YOUTH EXCHANGE PROGRAMS AS A DRIVER FOR INTERNATIONAL COOPERATION AND SYNTHESIS OF CULTURAL PRACTICES
В данной статье представлены результаты социологического исследования, аудиторией которого стали молодые люди в возрасте от 14 до 25 лет, проживающие в различных странах Европы, Азии и Америки, участвовавшие или планирующие принять участие в молодежных обменах Ротари. Автор обозначил факторы, влияющие на принятие решения аудиторией об участии в подобных программах, а также продемонстрировал факты синтеза культурных практик в рамках молодежного международного сотрудничества.This article presents the results of a sociological study, the audience of which was young people aged 14 to 25 years old, living in various countries of Europe, Asia and America, who participated or plan to participate in Rotary youth exchanges. The author outlined the factors infl uencing the audience’s decision to participate in such programs, and also demonstrated the facts of the synthesis of cultural practices within the framework of youth international cooperation
Electronic Structure of an Oxygen Vacancy in Al2O3 from the Results of Ab Initio Quantum-Chemical Calculations and Photoluminescence Experiments
The electronic structure of an oxygen vacancy in α-Al 2O3 and γ-Al2O3 is calculated. The calculation predicts an absorption peak at an energy of 6.4 and 6.3 eV in α-Al2O3 and γ-Al2O3, respectively. The luminescence and luminescence excitation spectra of amorphous Al2O3 are measured using synchrotron radiation. The presence of a luminescence band at 2.9 eV and a peak at 6.2 eV in the luminescence excitation spectrum indicates the presence of oxygen vacancies in amorphous Al2O3. © 2010 Pleiades Publishing, Ltd.ACKNOWLEDGMENTS This work was supported by the Siberian Branch, Russian Academy of Sciences (integration project no. 70)
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