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Tytuł:
Chondrichthyan spines from the Famennian (Upper Devonian) of Russia
Autorzy:
Lebedev, Oleg A.
Ivanov, Alexander O.
Linkevich, Valeriy V.
Powiązania:
https://bibliotekanauki.pl/articles/1835588.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
chondrichthyes
Ctenacanthiformes
Euselachii
Fin spines
Famennian
Devonian
Russia
ryby chrzęstnoszkieletowe
famen
dewon
Rosja
Opis:
Very rare chondrichthyan spines from the Famennian (Upper Devonian) of European Russia are referred here to ctenacanthiforms, euselachians and a chondrichthyan group of uncertain systematic position. Ctenacanthus Agassiz, 1837 is recorded from the lower and middle Famennian of the central and north-western parts of the area. Sculptospina makhlaevi Lebedev gen. et sp. nov. originates from the lower Famennian of the Lipetsk Region. The holotype of ‘Ctenacanthus’ jaekeli Gross, 1933 and a new specimen from the upper Famennian of the South Urals are shown to belong to the same taxon, which is transferred to Acondylacanthus St. John and Worthen, 1875. New specimens of Tuberospina nataliae Lebedev, 1995 from the upper Famennian of Central Russia are described in detail. The newly presented material increases our knowledge of the composition of Famennian marine assemblages from the East European Platform. It is suggested that these assemblages may be classified as chondrichthyan-dominated and dipnoan-dominated. Hypothetically, after the end- Devonian Hangenberg extinction event, which affected numerous secondary consumers in vertebrate communities, some chondrichthyan groups could have encroached to take advantage of previously occupied ecological niches. Ctenacanthus, as well as Acondylacanthus and Amelacanthus survived the end-Devonian mass extinction to continue into the Carboniferous.
Źródło:
Acta Geologica Polonica; 2020, 70, 3; 339-362
0001-5709
Pojawia się w:
Acta Geologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Chondrichthyan spines from the Famennian (Upper Devonian) of Russia
Autorzy:
Lebedev, Oleg A.
Ivanov, Alexander O.
Linkevich, Valeriy V.
Powiązania:
https://bibliotekanauki.pl/articles/139186.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
chondrichthyes
Ctenacanthiformes
Euselachii
Fin spines
Famennian
Devonian
Russia
ryby chrzęstnoszkieletowe
famen
dewon
Rosja
Opis:
Very rare chondrichthyan spines from the Famennian (Upper Devonian) of European Russia are referred here to ctenacanthiforms, euselachians and a chondrichthyan group of uncertain systematic position. Ctenacanthus Agassiz, 1837 is recorded from the lower and middle Famennian of the central and north-western parts of the area. Sculptospina makhlaevi Lebedev gen. et sp. nov. originates from the lower Famennian of the Lipetsk Region. The holotype of ‘Ctenacanthus’ jaekeli Gross, 1933 and a new specimen from the upper Famennian of the South Urals are shown to belong to the same taxon, which is transferred to Acondylacanthus St. John and Worthen, 1875. New specimens of Tuberospina nataliae Lebedev, 1995 from the upper Famennian of Central Russia are described in detail. The newly presented material increases our knowledge of the composition of Famennian marine assemblages from the East European Platform. It is suggested that these assemblages may be classified as chondrichthyan-dominated and dipnoan-dominated. Hypothetically, after the end- Devonian Hangenberg extinction event, which affected numerous secondary consumers in vertebrate communities, some chondrichthyan groups could have encroached to take advantage of previously occupied ecological niches. Ctenacanthus, as well as Acondylacanthus and Amelacanthus survived the end-Devonian mass extinction to continue into the Carboniferous.
Źródło:
Acta Geologica Polonica; 2020, 70, 3; 339-362
0001-5709
Pojawia się w:
Acta Geologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Electrospinning of Fibres Using Mixed Compositions Based on Polyetherurethane and Hydrophylic Polymers for the Production of Membrane Materials
Elektroprzędzenie włókien przy użyciu mieszanych kompozycji na bazie polieterouretanu i polimerów hydrofilowych do produkcji materiałów membranowych
Autorzy:
Bokova, Elena S.
Kovalenko, Grigory M.
Pawlova, Maria
Kapustin, Ivan A.
Evsyukova, Nataliya V.
Ivanov, Leonid
Powiązania:
https://bibliotekanauki.pl/articles/231523.pdf
Data publikacji:
2020
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Biopolimerów i Włókien Chemicznych
Tematy:
fibers electrospinning
polyurethane
polymer solutions processing
solutions modification
membrane materials
elektroprzędzenie włókien
poliuretan
przetwarzanie roztworów polimerowych
roztwór modyfikujący
materiały membranowe
Opis:
In this paper, the possibility of obtaining micro- and nanofibres, as well as nonwoven materials from polyether-urethane solutions using the method of electrospinning, was studied. The conditions and formulation-technological factors for the production of nonwoven fibrous webs from polyetherurethane (PUR) solutions modified with hydrophilic polymers: polyvinyl alcohol (PVA) and polyacrylic acid (PAA) were studied. The effect of hydrophilic polymers on the structure and average fibre diameter is shown. An increase in the indicators of hygienic properties of modified nonwoven materials was revealed with the aim of their further use in membrane bags for clothes and shoes.
W pracy zbadano możliwość otrzymywania mikro- i nanowłókien, a także włóknin z roztworów polieterowo-uretanowych metodą elektroprzędzenia. Badano warunki i czynniki technologiczne niezbędne do produkcji włóknin z roztworów polieterouretanu (PUR) modyfikowanych hydrofilowymi polimerami: polialkoholem winylowym (PVA) i kwasem poliakrylowym (PAA). Zbadano wpływ hydrofilowych polimerów na strukturę i średnią średnicę włókna. Stwierdzono wzrost wskaźników właściwości higienicznych modyfikowanych materiałów włókninowych, co pozwala na zastosowanie wytworzonych materiałów w materiałach membranowych.
Źródło:
Fibres & Textiles in Eastern Europe; 2020, 4 (142); 49-51
1230-3666
2300-7354
Pojawia się w:
Fibres & Textiles in Eastern Europe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Dispersion of Al-Si Alloy Structure by Intensive Pulsed Electron Beam
Autorzy:
Konovalov, S.
Gromov, V.
Zaguliyaev, D.
Ivanov, Y.
Semin, A.
Rubannikova, J.
Powiązania:
https://bibliotekanauki.pl/articles/381713.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
silumin
structure Al-Si
electron beam processing
crystallization cells
dispersion
struktura Al-Si
obróbka wiązką elektronową
krystalizacja
dyspersja
Opis:
By the method of modern physical material science (optic microscopy scanning and transmission electron microscopy) the analysis of structural phase states, the morphology of the second phase inclusions and defect substructure of Al-Si alloy (silumin) of hypoeutectic composition, subjected to electron beam processing was done with the following parameters: energy density 25-35 J/cm2, beam length 150 μs, pulse number – 3, pulse repetition rate – 0.3 Hz, pressure of residual gas (argon) 0.02 Pa. The surface irradiation results in the melting of the surface layer, the dissolution of boundary inclusions, the stricture formation of high speed cellular crystallization of submicron sizes, the repeated precipitation of the second phase nanodimentional particles. With the increased distance from the irradiation surface the layer containing the second phase inclusions of quasi-equilibrium shape along with the crystallization cells was revealed. It is indicative of the processes of Al-Si alloy structure globalization on electron beam processing.
Źródło:
Archives of Foundry Engineering; 2019, 2; 79-84
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Methods of fractal analysis and phase trajectories for the improvement of identification of complex technical systems
Autorzy:
Chovnyuk, Y. V.
Gumenyuk, Y. O.
Djachenko, L. A.
Ivanov, E. A.
Kravchyuk, V. T.
Powiązania:
https://bibliotekanauki.pl/articles/114794.pdf
Data publikacji:
2019
Wydawca:
Stowarzyszenie Menedżerów Jakości i Produkcji
Tematy:
fractal analysis
improvement
methods
phase trajectories
qualitative analysis
analiza fraktalna
trajektoria fazowa
analiza jakościowa
Opis:
The procedure of the qualitative analysis of complex technical systems is discussed. One may use such methods of analysis for time series characterized the functioning of such systems. These time serious aren’t confirmed the hypothesis of trend existence. One may use at this qualitative analysis the methods of nonlinear dynamics and the theory of chaos. The basis for similar researches is Takens’s theorem. The randomness of the studied dynamical system as the model of the complex technical system given by time realizations is established by means of Lyapunov’s indicator. The state stability is estimated by Hausdorf’s fractal dimension and the fractality index. Visual evaluation of the time series was carried out by means of the phase trajectory restoration procedure. As a result of the analysis of the phase points in the phase space the split attractor is indicated, which gives the chance to speak about its bifurcation.
Źródło:
Zeszyty Naukowe. Quality. Production. Improvement; 2019, 2 (11); 41-50
2544-2813
Pojawia się w:
Zeszyty Naukowe. Quality. Production. Improvement
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The evaluation of the current state of EHF-sensors quality in the technical systems and its improvement
Autorzy:
Chovnyuk, Y. V.
Ivanov, E. A.
Dovhaljuk, V. B.
Shyshyna, M. A.
Gumenjuk, Y. O.
Sivak, I. N.
Powiązania:
https://bibliotekanauki.pl/articles/114875.pdf
Data publikacji:
2019
Wydawca:
Stowarzyszenie Menedżerów Jakości i Produkcji
Tematy:
aperture
coaxial line
dynamic range of the evaluation
extremely high frequency sensors
function of the entropy evaluation
scale of the entropy evaluation
oceny entropii
czujnik
funkcja oceny entropii
Opis:
In the article the function and the scale for the entropy evaluation of the current state of extremely high frequency (EHF-) sensors quality in the various technical systems which fits the requirements of universality and maximal independency from the human factor are offered. One may see such EHF-sensors for the analysis of the quick transformations of the biological liquids properties. It’s high lighted that the available methods of the determination of technical systems’ quality have essential flaws which consist in both subjectivism because the dominant role in the evaluation belongs to experts and legitimacy of providing them properties of universality which was proved by nobody. The scheme of EHF-sensor is analyzed for which one may create an analytical model. The problem of the fields’ determination at the working region of such sensor is discussed. The presented scheme is possible to use for the mathematical model and just for that part of the problem which is devoted to the transformation of the properties of the object. The results of calculation of components of electromagnetic field at the working space of EHF-sensor are discussed. One may estimate the sizes of this space. The offered function of the quality evaluation, the parameter of which is the quantity of own information of the explored sensor, provides the declared universality approach according to the principles of the information theory. The conformity to all requirements for the functions of the evaluation of the quality: continuity, monotonic and smoothness over the whole range of definition regardless of the probability distribution function, which is measured by the random value EHF-sensor was proved. The proposed scale of the entropy evaluation of the quality fits to standard settings of the diagnostic of the technical systems and has three sub ranges which determine the state of the EHF-sensors: good state, up state, and down state. Unlike the existing psychophysical scales the offered scale has dynamic range of the evaluation so the limits of the sub ranges will automatically change depending on the regulatory and technical requirements for the state of the explored EHF-sensor. Such approach provides adaptation of the scale to specific requirements which gives a chance to evaluate the qualitative state of the object more reliably. The results of modeling of the qualitative state of the sensor are given. The possible practical application of the offered function and scale is usage in the systems of monitoring and diagnostic for determination of the current qualitative state of the explored technical system, as well.
Źródło:
Zeszyty Naukowe. Quality. Production. Improvement; 2019, 2 (11); 26-40
2544-2813
Pojawia się w:
Zeszyty Naukowe. Quality. Production. Improvement
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The improvement of the rheological model for controlling the stress-strain state and humidity in the materials of museum pieces: zener thermodiffusion model for capillary-porous bodies
Autorzy:
Dovhaliuk, V. B.
Chovnyuk, Y. V.
Ivanov, E. A.
Shyshyna, M. O.
Powiązania:
https://bibliotekanauki.pl/articles/114762.pdf
Data publikacji:
2019
Wydawca:
Stowarzyszenie Menedżerów Jakości i Produkcji
Tematy:
aftereffect
colloid capillary-porous bodies
deformations
heat and mass transfer
Ishlinskiy - Rzhanitsin generalized rheological model of the elastic-viscous body
Zener thermodiffusion rheological model
model reologiczny
model termodyfuzji Zenera
ciało kapilarno-porowate
transfer ciepła
transfer masy
Opis:
The drying and humidifying processes of capillary-porous (colloid) bodies occur during the production of various materials for the consumer goods industry, building materials, storage of museum pieces, etc. It is known that the main linkage forms of the moisture and colloid capillary-porous bodies (CCPBs), namely adsorption, capillary condensation and capillary linkage of the free moisture in the cavities of the above bodies, depend on the temperature and relative humidity of drying/humidifying agent. It means that the CCPBs behave in a peculiar way depending on the temperature and humidity fields. The problems of CCPBs drying (or humidifying) process include the issue of the heat and humidity transfer both in the middle of the body and in the boundary layer on the interface of phases “body (object of drying/humidifying process) – environment”. The drying/humidifying intensity is at its maximum when the possibilities of the heat and mass transfer in the boundary layer correspond to the possibilities of moisture and heat moving inside the object of drying/humidifying process. The properties of the CCPB as material possessing specific elastic-viscous properties are described within the framework of O.Y. Ishlinskiy - O.R. Rzhanitsin generalized elastic-viscous body theory. A comparative analysis of the above mentioned CCPB’s properties from the point of view of Zener thermodiffusion theory is conducted. The mechanism of moisture transferring from the CCPBs’ central layers (as object of drying/humidifying process) up to their surfaces is developed. The theoretical researches examined the drying/humidifying phenomena for both the entire volume of the CCPB and three structural directions. It is noted that drying/humidifying of CCPBs is a complicated heat and mass transfer process accompanied by mechanisms of molecular nature determining the kinetics of their running. It is shown that the appropriate equations’ solution of molecular-molar heat and moisture transfer under the appropriate boundary (limit) conditions allows to describe the fields, i.e. the distribution of transfer potentials (the temperature and moisture content in the CCPB as object of drying/humidifying) at any time of the appropriate process. The drying/humidifying curves (“drying/humidifying rate versus CCPB humidity”) and the temperature curves (“CCPB temperatures versus CCPB humidity”) reflect the nature of the drying/humidifying processes. In the framework of the proposed generalized rheological model of CCPB, the residual deformations of bodies for various load types (the time-varying stress applied to the CCPB) is estimated.
Źródło:
Zeszyty Naukowe. Quality. Production. Improvement; 2019, 2 (11); 51-71
2544-2813
Pojawia się w:
Zeszyty Naukowe. Quality. Production. Improvement
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Investigation of Dust Transfer Processes During Loading and Unloading Operations Using Software Simulation
Autorzy:
Smirnov, Y. D.
Ivanov, A. V.
Powiązania:
https://bibliotekanauki.pl/articles/123999.pdf
Data publikacji:
2018
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
bunker
dust suppression
ANSYS
simulation
ROCKY
hopper
Opis:
In order to limit dust transfer during the operations of material transportation at the factories of the construction industry, factories of the mineral and raw materials complex employ special dust suppression bunkers. These devices are structures located above a railway hopper (either a truck body or a conveyor). Through the input portal of the device, the transported material is transferred. Dusting can also be carried out under the bunkers from the side of the hopper, into which the material is poured. The design of dust suppression bins should be accompanied by a simulation of dust propagation processes. The simulation should be carried out in order to minimize the dust emissions and to select the optimum locations for the dust suppression sprayers.
Źródło:
Journal of Ecological Engineering; 2018, 19, 4; 29-33
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Investigation of Waste Properties of Subway Construction as a Potential Component of Soil Layer
Autorzy:
Ivanov, A. V.
Smirnov, Y. D.
Petrov, G. I.
Powiązania:
https://bibliotekanauki.pl/articles/124091.pdf
Data publikacji:
2018
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
subway
waste
soil
landfill
mine site
hazard class
total carbon
moisture
biotesting
Chlorella algae
Opis:
The construction of subway stations is inevitably accompanied by the formation of a large amount of waste that is extracted from the underground workings by rock. When the waste is transported, the air is polluted with the exhaust gases of the dump trucks, some of the waste can stay on the road surface, the use of dump trucks increases the load on the roadway, the disposal of waste at landfills harms the environment, and enterprises pay fees for the transportation as well as placement of the waste. The article deals with the waste from the construction of new stations in the Saint-Petersburg subway. In order to determine the possibility of using waste in the municipal economy, a comprehensive analysis of this waste was carried out, including determination of moisture content, acidity, total carbon content, as well as chemical and granulometric composition. On the basis of the study results, it was established that the waste in question belongs to the hazard class 5, which enables to use it as a component of the soil mixture. Afterwards, the hazard class 5 was confirmed by the method of bioassay based on the determination of water toxicity by changing the optical density of the Chlorella algae culture.
Źródło:
Journal of Ecological Engineering; 2018, 19, 5; 59-69
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Distribution of Excess Regenerative Energy in Electric Transport Systems on the Basis of Fuzzy Logic Application
Autorzy:
Sablin, O.
Kuznetsov, V.
Shinkarenko, V.
Ivanov, A.
Powiązania:
https://bibliotekanauki.pl/articles/223524.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
electric transport
regeneration of the electric power
stores
inverters
regulation of voltage
traction
external power supply
fuzzy logic
transport elektryczny
regeneracja energii elektrycznej
magazyny
falowniki
regulacja napięcia
trakcja
zasilanie zewnętrzne
logika rozmyta
Opis:
Purpose. To develop the fuzzy model of distribution of excess regenerative energy in traction and external power supply systems allowing to exercise effective operation of the power equipment. Relevance. For effective distribution of excess regenerative energy in systems of electric transport, as well as for systems equipped with stationary stores of energy and inverting traction substations with regulators of output voltage it is necessary to solve a number of the problems with high degree of uncertainty demanding taking into account a set of random factors such as the modes of power lines and traction loadings. These factors have to be considered in operation for choosing the rational modes of energy stores, inverters and regulators of voltage on buses of substations to provide the rational conditions for energy regeneration on electric transport. Scientific novelty. The control system of energy storage devices, inverters and traction substation output voltage regulators, designed on the basis of fuzzy logic, can provide the necessary conditions for the regeneration on electric transport on sections with a shortage of traction power consumption and allows to optimize the distribution of excess braking energy of transport vehicles. It is achieved by determining the rational relationship between the components of the excess current of regeneration in real time, which can ensure a minimum of power losses of regenerative energy in traction and external power supply systems. Practical importance. The use of the developed approach is effective under the conditions of incomplete information received by measurement systems and on the basis of additional studies it can allow to minimize rated capacity of stores, inverters and traction substation output voltage regulators that could reduce the costs of modernization of existing sections and electrification of new electric transport systems.
Źródło:
Archives of Transport; 2017, 42, 2; 53-63
0866-9546
2300-8830
Pojawia się w:
Archives of Transport
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ecological Assessment of the Current State of Environmental Components on the Territory of the Impact of Cement Production Industry
Autorzy:
Strizhenok, A. V.
Ivanov, A. V.
Powiązania:
https://bibliotekanauki.pl/articles/124168.pdf
Data publikacji:
2017
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
cement production industry
cement dust
environment
pollution
degradation of vegetation
NDVI index
deposition of dust
Opis:
The monitoring of the environmental components condition, exposed to the influence of the cement production enterprises, was the aim of the conducted research. One of the largest cement production factories in Russia, where the territory of negative impact has a total area of over 300 square kilometers, was the object of the study. The observations of the dust content in atmospheric air, as well as the determination of degradation degree of vegetation in the area of influence of the considered production facility were conducted. Chemical and granulometric composition of the cement dust, which is emitted in atmospheric air, were identified in the laboratory. Mapping model, which indicates the complex ecological welfare of the territory, exposed to the cement production industry, was compiled by the authors on the basis of the data, obtained in conducted research. The mapping model takes into account both the content of dust in near-ground atmosphere, and the extent of its deposition to soil, vegetation and surface water bodies.
Źródło:
Journal of Ecological Engineering; 2017, 18, 6; 160-165
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application of Carbonaceous Household Wastes as Fuel Feedstock at Thermo Metallurgical Equipment and Processes
Autorzy:
Boikov, A. V.
Ivanov, P. V.
Powiązania:
https://bibliotekanauki.pl/articles/952349.pdf
Data publikacji:
2016
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
MSW
ecology
thermal treatment
RDF
conveyor kiln
Opis:
The possibility of utilization of municipal solid waste in the conveyor roasting cement production machine along with obtaining secondary thermal energy, what could reach 15-20% of the principal quantity of the heat energy required for the conduct of the process was considered. The inclusion of ash obtained from the incineration of municipal solid waste after preprocessing into the cement clinker composition was proposed. The reduction of the emission of dioxins and furans in the atmosphere and the impact on the environment was achieved as a result.
Źródło:
Journal of Ecological Engineering; 2016, 17, 3; 18-21
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Information Support for Monitoring of the Sphere of Solid Municipal Waste Treatment
Zaopatrzenie informacyjne monitorowania sfery obchodzenia się ze stałymi odpadami komunalnymi
Autorzy:
Ivanov, A. V.
Balanowski, M. V.
Fatykhov, J. A.
Powiązania:
https://bibliotekanauki.pl/articles/1815487.pdf
Data publikacji:
2016
Wydawca:
Politechnika Koszalińska. Wydawnictwo Uczelniane
Tematy:
municipal waste
effective management
environment
geo-information system
monitoring of waste
odpady komunalne
efektywne zarządzanie
ochrona środowiska
system geoinformacyjny
monitoring odpadów
Opis:
Organization of effective management of municipal waste is a complex management task, characterized by a multiplicity and heterogeneity of the factors that must be taken into account, and multistage associated with different content process applicable at each stage. To make effective management decisions we must to decide the problem of the availability of reliable and timely information. The geo-information system for monitoring and waste management can be seen as a higher-order system element, including for complex socio-eco-economic assessment of the status of the region. The main task of achieving economic efficiency of waste sorting is: "It must be economically profitable for population and management companies to sort waste and dispose them in different containers." To do this, the tariff for the export of unsorted waste containers should be maximized and the cost of removal of sorted waste should be minimal (ideally - zero). The results obtained have allowed significantly improve the capacity and effectiveness of the decisions made, in particular, on issues such as the optimization of traffic flows, division of human settlements into separate areas on a territorial basis and a reasonable preparation of technical tasks in the organization of tender procedures in the management system of sanitary clearing settlements.
Organizacja efektywnego zarządzania odpadami komunalnymi jest złożonym zadaniem, które charakteryzuje się wielością i różnorodnością czynników, które muszą być brane pod uwagę. Jest to wieloetapowy proces związany z różnymi procesami technologicznymi mającymi zastosowanie na po-szczególnych etapach. Problem dostępności wiarygodnej i aktualnej informacji jest wspólny dla wszystkich etapów podejmowania skutecznych decyzji w zakresie obchodzenia się z twardymi odpadami komunalnymi. Geoinformacyjne systemy monitorowania i zarządzania odpadami mogą być postrzegane jako element wyższego rzędu systemowego, również dla kompleksowej oceny społeczno-ekologicznego i gospodarczego statusu regionu. Głównym zadaniem osiągnięcia efektywności ekonomicznej segregacji odpadów jest: „Ludność i spółki zarządzające, które muszą mieć korzyść z sortowania odpadów i wyrzucania ich do różnych pojemników”. Aby to zrobić, taryfy na wywóz nieposortowanych pojemników na odpady powinny być zmaksymalizowane, koszt usuwania odpadów segregowanych powinien być minimalnym (idealnie – zero). Otrzymane wyniki wskazują na znaczne poprawienie skuteczności podejmowanych decyzji szczególnie w takich kwestiach jak optymalizacja ruchu transportowego, podział na osobne obszary terytorium mieszkaniowego, bardziej uzasadnione przygotowania zadań technicznych w organizacji proce-dur przetargowych w systemie zarządzania sanitarnych oczyszczeń zamieszkałych obszarów.
Źródło:
Rocznik Ochrona Środowiska; 2016, Tom 18, cz. 1; 18-27
1506-218X
Pojawia się w:
Rocznik Ochrona Środowiska
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Preparation of nanocomposite magnetic compounds based on layered semiconductors by means of electrochemical intercalation in a gradient magnetic field
Autorzy:
Boledzyuk, V.
Bakhtinov, A.
Kovalyuk, Z.
Kudrynskyi, Z.
Ivanov, V.
Slyn'ko, V.
Powiązania:
https://bibliotekanauki.pl/articles/1159217.pdf
Data publikacji:
2016-09
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
71.20.Tx
81.05.Hd
81.40.Rs
Opis:
In this paper we propose a method of intercalation of layered single crystals with atoms of 3d-metals in a magnetic-field gradient. We report on structure properties of Co_{x}InSe and Co_{x}In₂Se₃ layered crystals intercalated by cobalt. It was established that ferromagnetic ordering at room temperature is observed in the intercalated crystals. The crystals are a nanocomposite material that consists of a layered matrix and arrays of Co nanoformations on the van der Waals surfaces of InSe and In₂Se₃ layers.
Źródło:
Acta Physica Polonica A; 2016, 130, 3; 773-777
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Microstructure of Zirconia-Based Sol-Gel Glasses Studied by SANS
Autorzy:
Ryukhtin, V.
Strunz, P.
Kopitsa, G.
Ezdakova, K.
Gubanova, N.
Ivanov, V.
Baranchikov, A.
Angelov, B.
Feoktistov, A.
Pipich, V.
Levinský, P.
Powiązania:
https://bibliotekanauki.pl/articles/1402086.pdf
Data publikacji:
2015-10
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
61.05.fg
81.20.Fw
81.05.Kf
61.43.Fs
Opis:
Zirconia-based bulk glasses were prepared for the first time by sol-gel method. Such materials are very promising for application as photochromic devices, catalytic systems, chemical sensors, lasers and other nonlinear optics devices. Obtained transparent and semi-transparent materials were studied by small and ultra-small angle neutron scattering (SANS and USANS) methods. As evidenced by SANS, morphology of zirconia glasses is very sensitive to parameters of sol-gel synthesis, e.g. temperature and concentration of reactants. SANS data correlates rather well with surface porosity data. Increasing water concentration in reaction mixtures containing zirconium propylate leads to a significant increase in fractal cluster size, while decrease of the temperature results in an increase of the fractal dimension. The obtained results indicate that parameters of the microstructure and consequently physical properties of zirconia glasses can be effectively controlled by parameters of synthesis.
Źródło:
Acta Physica Polonica A; 2015, 128, 4; 582-584
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 64

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