bluuebunny/crossref_metadata_2025_split huggingface dataset:
Methodology development for the control of NOx emissions in Aerospace Industry
Authors: Gangisetty G , Ivchenko A.V. , Thomas Jayachandran A. V. , Sverbilov V.Y. , Matveev S.S. , Chechet I. V. 
Published: August 2019

Abstract
A large number of studies conducted in Russia and abroad have been devoted to the development of low NOx emission gas turbine engines for aircraft and power stations. However, the continual improvement of the environmental requirements of ICAO (International Civil Aviation Organization) forces new research to be carried out to meet the future goals of reduced emissions produced by gas turbine combustors (GTE), a better understanding of the process of formation of various pollutants is required. Both empirical and theoretical approaches will be studied in this present research work to provide the exhaust concentrations of NOx emissions. In recent years different methods are already developed for this problem, one of them is associated with a theoretical approach. It is well known that correct theoretical models are economical (help’s to avoid experimental work) and can be useful for deep examination of NOx emissions generated in the combustion chamber process. The main objective of this study is to predict NOx emissions in GTE based on the mathematical simulations and chemical kinetics approach.
To validate the simulation results, dispersion type optical system was developed in the laboratory. This system includes UV LED source (λ=245-280nm), single-pass absorption cell with length (L=500 mm) and spectrometer DFS-452 (spectral dispersion up to Δλ = 0.2nm/mm) equipped photo detector MORS-1 with a detection range Δλ=50nm. It allowed us to measure concentrations of some matters which absorbed light in the UVC range.
Experimental study of filtration behavior of diesel particulate filter in a diesel engine to meet BS-VI emission norms in INDIA
Authors: Nain Singh Gurkamal , Singh Bharj Rabinder 
Published: August 2019

Abstract
Due to upcoming Bharat Stage-VI emission norms, emission control has to become mandatory for every vehicle in India. Bharat Stage-VI are the stringent emission norms to be introduced by the Indian government for controlling the vehicle exhaust emissions. Diesel powered vehicles are more popular because of its high thermal efficiency, lower fuel consumption, and lower CO2 emission compared to the petrol engine. Although, diesel-powered vehicles produce more oxides of nitrogen and particulate matter. Diesel particulate filter (DPF) is the new technology to abate the particulate matter. In this paper, a DPF was installed into the exhaust of a single cylinder direct injection diesel engine. In order to investigate the filtration efficiency of DPF and its effect on fuel economy, indicated power and emission characteristics, experiments were conducted on a single cylinder diesel engine test rig. Results showed that after installing the DPF on the engine exhaust there was more than 90% reduction in particulate matter, while specific fuel consumption was increased by about 4% and indicated power was decreased by approximate 2KW.
Conversion of liquid combustible wastes in the filtration regime to syngas by partial oxidation
Authors: Zaichenko A.Yu. , Tsvetkov M.V. , Podlesniy D.N. , Salganskaya M.V. , Salgansky E.A. 
Published: August 2019

Abstract
A new method of combustion/conversion of liquid combustible wastes is proposed in the filtration mode when one of the reagents (liquid fuel or oxidizer gas) is supplied from the end of the reactor filled with a porous incombustible backfill (inert) and the other into the middle part. In this case, the inert, charged to the upper part of the reactor at room temperature, is heated in countercurrent combustion products. At discharging of inert from the lower part of the reactor (and the equal volume is simultaneously added to the upper part, so that the bed in the reactor is kept constant), the inert heated in the upper part enters the lower part, where it gives heat to the gaseous reagent supplied from below. This method can be carried out both with an excess of the oxidant with the combustion of combustible liquids to CO2 and H2O, and with a lack of oxidizer, when the conversion of the initial fuel to the synthesis of a gas predominantly containing CO and H2 takes place. On the example of a model fuel (isopropyl alcohol), the regularities of filtration combustion at different oxidant to fuel ratios have been experimentally studied.
Ab initio line-shape parameters for speed-dependent hard-collision profiles: applications to rovibrational lines of H2, D2, HD in He or H2
Authors: Thibault Franck , Wcisło Piotr 
Published: August 2019

Abstract
We review our recent studies on the spectral line shapes of H2, including its isotopologues, self-perturbed or perturbed by helium. Line shape parameters are derived following the generalized Hess method and making use of the close-coupling formalism.
Comparison of the fragmentations of phenanthrene and anthracene by low-energy electron impact
Authors: van der Burgt Peter J. M. , Dunne Melissa , Gradziel Marcin L. 
Published: August 2019

Abstract
We have measured sets of mass spectra for positive ions produced by low-energy electron impact on phenanthrene. Ions have been mass resolved using a reflectron time-of-flight mass spectrometer, and the electron impact energy has been varied from 0 to 100 eV in steps of 0.5 eV. Ion yield curves of most of the fragment ions have been determined by fitting groups of adjacent peaks in the mass spectra with sequences of normalized Gaussians. The aim of this paper is to provide a detailed comparison of phenanthrene with its isomer anthracene, for which we have published results in a previous paper [1]. Appearance energies for a selection of fragment ions of phenanthrene have been determined, and are compared with anthracene. The most significant differences are observed in the ion yield curves of the ions containing 12 carbon atoms. The ion yield curves of phenanthrene have higher maximum yields and lower appearance energies compared to anthracene. For the fragments containing 9 and 10 carbon atoms the phenanthrene yields are slightly lower, but the appearance energies are the same as for anthracene. Small differences in yields are also observed for the fragments with 6 and 7 carbon atoms. The double and triple ionization energies of phenanthrene have been determined and are in agreement with anthracene.
Modeling of Lyman-α line polarization in fusion plasma due to anisotropic electron collisions
Authors: Goto M , Ramaiya N 
Published: August 2019

Abstract
We have derived a formula for calculating the polarization state of the Lyman-α line in plasma caused by anisotropy in the electron velocity distribution function. Calculation results under the condition of the magnetically confined fusion plasma show that the longitudinal alignment of 0.01 is caused by approximately 10%–20% difference in the electron temperature in the directions parallel and perpendicular to the magnetic field. It is also found that the polarization decreases with the increasing electron density, n
e, due to the collisional population averaging effect over the magnetic sublevels in the range of n
e > 1018 m−3 and is virtually extinguished at n
e = 1021 m−3.
Experimental study of the influence of the cathode in the characteristics of the cathode region
Authors: Gonzalez-Fernandez V. , Grützmacher K. , Pérez C. , de la Rosa M. I. 
Published: August 2019

Abstract
Doppler free two photon optogalvanic measurements of the Stark splitting of the 2S level of hydrogen are used to determine the local electric field strength (E-field) in the cathode fall region of a hollow cathode discharge operated in pure hydrogen. The aim of these measurements is to study how the cathode fall characteristic depends on cathode material (stainless steel and tungsten) and cathode diameter (10 and 15 mm). The measurements revealed that the cathode diameter has a minor influence whereas the cathode fall characteristics obtained for stainless steel cathodes are remarkably modified due to sputtering.
Time-resolved plasma spectroscopy of diatomic molecular cyanide
Authors: Helstern C M , Parigger C G 
Published: August 2019

Abstract
In this work, measurements of cyanide (CN) molecular spectra following laser-induced optical breakdown are communicated. The recorded time-resolved data are Abel inverted to determine the spatial distributions of the maximum CN signals and to evaluate molecular excitation temperatures. The experiments are conducted in a 1:1 CO2:N2 gas mixture contained in a cell kept at atmospheric pressure, and the micro-plasma is generated using 150 mJ, 6 ns Q-switched Nd:YAG laser radiation. The optical emissions from the micro-plasma are dispersed using a 0.64 m spectrometer and are recorded along the wavelength and slit dimensions using an intensified charge-coupled device.
Determination of the Radiative Characteristics of Molecular Transitions in the band HgXe(A3O+) – HgXe(X1O+)
Authors: Devdariani A Z , Kryukov N A , Lednev M G , Zagrebin A L , Olevskaia V V 
Published: August 2019

Abstract
This study is aimed at the explanation of peculiarities in emission spectral profiles obtained by different authors for the excimer band HgXe(A30+) – HgXe(X10+). The calculations of the spectral profiles have been fulfilled for two limiting cases: for the high density and low density of buffer gas atoms. The results obtained lead to the conclusion that the discrepancies can be mainly caused by the recombination and relaxation processes determining the population ro-vibrational states of the HgXe(A30+) excimer. The inverse spectroscopic problem is considered.
Spectroscopy of Rydberg Atoms in a Black-body Radiation field: Ionisation Rates and Effective Lifetimes
Authors: Glushkov A V , Ternovsky V B , Kuznetsova A A , Romanenko E , Zaichko P A 
Published: August 2019

Abstract
The combined relativistic energy approach and relativistic many-body perturbation theory, with a zeroth order approximation density functional theory, are used to calculate the ionisation rates and effective lifetimes values for Rydberg atoms in a black-body radiation field. Calculations for the rubidium atom in Rydberg states with principal quantum number n > 26 are presented and compared with available theoretical and experimental data.
Parity non-conservation effect in heavy atomic systems within relativistic many-body perturbation theory: Advanced data
Authors: Khetselius O Yu , Ternovsky V B , Svinarenko A A , Dubrovskaya Yu V , Serga I N 
Published: August 2019

Abstract
Computing the parity non-conservation (PNC) effect parameters in a few heavy atomic systems has been performed and based on the combined relativistic nuclear mean-field theory and relativistic many-body perturbation theory (PT) formalism with accounting for the interelectron correlation and dominant QED corrections. Results of computing the PNC amplitudes and weak charges for different heavy atoms (caesium, thallium, ytterbium) are presented and compared with available data in the literature.
Doppler profile diagnostics on VUV spectra for the impurity ion temperature in edge plasmas of Large Helical Device
Authors: Oishi T , Morita S , Dai S Y , Kobayashi M , Kawamura G , Liu Y , Goto M 
Published: August 2019

Abstract
A space-resolved VUV spectroscopy using a 3 m normal incidence spectrometer is utilized to measure the impurity emission profile in the edge and divertor plasmas of the Large Helical Device in the wavelength range of 300 - 3200 Å. The ion temperatures derived from the Doppler profile fitting for the spectra of carbon CII 1335.71 × 2 Å, CIII 977.02 × 2 Å, and CIV 1548.20 × 2 Å are comparable to ionization potential for each charge state. The vertical profile of the ion temperature measured from CIV line has higher values in the edge observation chords compared to those in the central chords.
Non-CLTE spectral modeling approach for hydrogen pellet ablation cloud in the Large Helical Device
Authors: Seguineaud Guillaume , Motojima Gen , Narushima Yoshiro , Goto Motoshi 
Published: August 2019

Abstract
Spatially-resolved spectral measurement of a hydrogen pellet ablation cloud has been conducted in the Large Helical Device. Least square fittings of one of the obtained spectrum are inconsistent when the complete local thermodynamic equilibrium (CLTE) condition is supposed. A better agreement is found when a more general spectral model is used. The electron density of 1.4 × 1023 m−3 obtained is similar to that obtained in a previous study [M. Goto et al., Plasma Phys. Control. Fusion 49, 1163 (2007)]. The electron temperature of 0.4 eV is however significantly lower than the value of 1 eV derived in the same previous study.
Modeling of line and continuum spectral emission of hydrogen for recombining plasma conditions
Authors: Sheeba R.R. , Koubiti M. , Marandet Y. , Qbaich T. , Rosato J. , Stamm R. 
Published: August 2019

Abstract
Balmer line and continuum spectral emission of hydrogen are modeled for detached divertor plasmas (electron density, ne
~1020-1021
m
−3 and electron temperature, Te
~1 eV) of Tokamaks. The Stark broadened high-n lines are calculated considering electronic broadening using the impact approximation. Continuum emission is calculated using analytical equations for radiative recombination and bremsstrahlung. Discrete to continuum transition is modeled using a dissolution factor approach.
Plasma spectroscopy of titanium monoxide for characterization of laser ablation
Authors: Van Woerkom T A , Perram G P , Parigger C G , Dolasinski B D , Phelps C D , Berry P A 
Published: August 2019

Abstract
Ablation of titanium wafers in air is accomplished with 60 µs pulsed, 2.94 µm laser radiation. Titanium monoxide spectra are measured in the wavelength range of 500 nm to 750 nm, and molecular signatures include bands of the C3 Δ → X3 Δ α, B3 Π → X3 Δ γ′, and A3 Φ → X3 Δ γ transitions. The spatially and temporally averaged spectra appear to be in qualitative agreement with previous temporally resolved studies that employed shorter wavelengths and shorter pulse durations than utilized in this work. The background signals in the current study are possibly due to particulate content in the plume. A chemical kinetic model of the plume is being developed that will be coupled to a diatomic emission model in order to extract a molecular temperature from the observed spectra.
Aluminium thin films depth profiling using LIBS
Authors: Zehra Syedah Sadaf , Nicolosi Piergiorgio , Costello John , Hayden Patrick 
Published: August 2019

Abstract
Laser Induced Breakdown Spectroscopy (LIBS) is an analytical technique used to classify and potentially quantify elements in complex hosts (or matrices) [1,2]. In this study, silicon based aluminium thin films were developed to study the depth profile and ablation rate of the material. Five films with different thicknesses from 1mm to 1.5 micron were used. The experimental setup consisted of s single pulse system with a Nd:YAG laser (1064 nm, up to 450 mJ, pulse duration 6 ns) used to irradiate the samples, an optic fibre spectrometer was used to detect the spectrum. The results show low ablation rate with time integrated method.
Validity of the deconvolution method for multicomponent spectral lines
Authors: Zorina N , Revalde G , Skudra A 
Published: August 2019

Abstract
In this paper, we present a study of the validation of the deconvolution procedure for multicomponent overlapping spectral line profiles. The solution of the ill-posed inverse task was implemented using the Tikhonov regularization algorithm. For this study, both, theoretically modelled and experimentally measured 253.7 nm mercury spectral line profiles were used, emitted from high-frequency electrodeless lamps.
Analysis of Wavelength Modulation Spectra for Determination of OH Radical Concentration in an Atmospheric Pressure Laminar Premixed Flames
Authors: Nevrlý V , Bitala P , Klečka V , Vašinek M , Zelinger Z , Suchánek J , Dostál M , Válek V 
Published: August 2019

Abstract
This work is aimed at the application of wavelength modulation spectroscopy with the second harmonic detection for determination of OH radical concentration in laminar premixed flames of methane-air mixtures. Several hot water lines and two overtone OH transitions were identified in high-resolution absorption spectra measured in our experimental setup. Information on spectral line-shape parameters for selected OH transitions were extracted from the experimental data using relevant methods and approximations. An appropriate line-shape model was finally implemented into an automated least-square fitting procedure in order to quantify the local mole fraction of OH radical in an atmospheric pressure flames.
Analysis of the state grants’ impact on the economic sustainability and efficiency of agricultural production
Authors: Akimova E P , Oleynik A N 
Published: August 2019

Abstract
The estimation of the state support efficiency for agriculture in the Russian Federation is actively discussed in economic spheres. The grants received by farmers should be justified by an increase in the production and an increase in its profitability. It makes this research topic relevant. The article considers the degree of state grants influence on the stability of agricultural production and financial performance on the example of agricultural organizations of the Slavyansk region of Krasnodar Territory. The economic indicators of the agro industrial complex (AIC) of the region are considered. The main agricultural crops capacity, production and sales volumes, average prices for products, cost value and profitability of sales are analysed. The volume of grants received per hectare, the degree of costs compensation, the impact of grants on returns on investments and product profitability are considered using rice as an example. The analysis of the grants impact on the volume of net profit is given. It was proposed to determine the profitability of capital using the net profit reduced by the volume of grants in the calculations to improve the objectivity of the analysis and estimation of the efficiency of agricultural producers.
The substance and content of environmental supervisory activities in the Russian Federation
Authors: Safronov V V , Babaeva A A , Farafontova E L , Petrova G I , Schebliakov E S 
Published: August 2019

Abstract
This paper attempts to consider some aspects of the state institute for supervision in the field of environmental activities in Russia. The existing gaps and conflicts in the system for ensuring the proper implementation of environmental law are factors for the need for the state to apply the institutional and legal mechanisms, the analysis of which was presented in this study. One of the most important institutions of environmental protection is the environmental supervision. The existing legislation of the Russian Federation regulates the order and the system of executive authorities, as well as the legal status of environmental entities. However, in practical activities of the environmental legal relations entities, problems arise in the enforcement of environmental law. The article describes the main aspects of the formation, development and operation of environmental supervisory activities in the Russian Federation, presents the interpretation of the basic tools of the environmental protection supervision system in the Russian Federation, and also some problems of law enforcement in this area are identified, and possible solutions are suggested. The purpose of the study is to identify areas of improvement of state environmental protection as the most important tool for managing environmental quality and environmental safety in Russia.
Productivity and quality of onion products during the storage depending on mineral nutrition conditions
Authors: Selivanova Maria , Aysanov Timur , Romanenko Elena , Sosyura Elena , Esaulko Natalia , German Maria 
Published: August 2019

Abstract
Onions are eaten fresh throughout the year, so the safety of its products is an important task for production. The quality and safety of products in addition to hereditary characteristics of the variety, are affected by the growing conditions and storage technology, an important role is played by the conditions of the crop mineral nutrition. Studies were carried out in the zone of unstable humidification of the Stavropol Territory in 2016, the storage of products (2016-2017) was carried out in a storage with controlled temperature and ventilation. As a result of researches it is proved that the biggest effect on saving the crop was observed in the application of the estimated rate of the fertilizer N120P170K140 which allowed to reduce the general losses of production of onions in the course of storage in comparison with the control one by 6.5-8.7 %. The use of the calculated rate of fertilizers contributed to the production of the largest amount of dry matter, sugars and vitamin C in the production of onion, and the biochemical parameters of bulbs during storage for all types of the experience have changed.
Increasing economic efficiency of flour production from grain of the main cereal crops by extrusion method
Authors: Yanova M A , Oleynikova E N , Sharopatova A V , Olentsova J A 
Published: August 2019

Abstract
The paper deals with the issues of improving the economic efficiency of grain processing enterprises through the introduction of the developed technologies of extrusion and flour production from extruded grains of the main cereal crops. The comparison of the output norms in the processing of grain from the main cereal crops on the existing and developed technologies was carried out. The calculations of the flour production efficiency showed that the processing of wheat will increase the volume of marketable products by 10.0 %, barley – by 14.8 %, oat – by 22.3 %, in this regard, the profitability of production of new high-yield types of flour will increase: wheat by 15 %, barley – by 29.3 %, oat – by 45.6%. Crops have a higher economic effect in the production of extruded flour due to the low cost of raw materials and a decrease in technological waste.
Development of logistics infrastructure in Yenisey Siberia
Authors: Lukinykh Valeriy F , Pyzhikova Nataliya I , Shvalov Pavel G 
Published: August 2019

Abstract
Regional logistics system and its infrastructure acts as a factor of increasing the competitiveness of the region. The purpose of the “Yenisei Siberia” regional logistics infrastructure development is to promote the harmonious structuring of commodity and related flows of the three regions – Krasnoyarsk territory, the republics of Khakassia and Tuva. A prerequisite for the creation of an effective logistics infrastructure is a realistic scenario for the development of the economy for a long period or a system of scenario conditions that allow modeling its most likely trajectory. This is due to the fact that infrastructure projects have a long investment cycle. The article analyzes the level of development of the logistics infrastructure of small cities in the Krasnoyarsk Territory, the Republic of Khakassia and the Republic of Tyva. The relevance of infrastructure development as an integrated factor in socioeconomic development is explained.
Ecological engineering as an effective method of ensuring company ecological safety
Authors: Borisov A I , Pesterev A P , Vasilyeva A I , Gabyshev I N , Nektegyaev G G 
Published: August 2019

Abstract
The article aims to consider the concept of “environmental engineering” in the context of environmental activities in the Russian Federation. Authors of this article set as an example the work of the company OJSC Udmurtneft, which activity is connected with the development of such a segment as environmental engineering. As a result of the analysis, authors prove that to quickly prevent the negative impacts of industrial enterprises on the environment in this area, it is necessary to carry out permanent environmental controlling.