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Wyszukujesz frazę "energy interaction" wg kryterium: Temat


Tytuł:
Sustainable increases of energy efficiency by holistically considered structures of factory systems
Autorzy:
Richter, C.
Fischer, S.
Neugebauer, R.
Müller, E.
Schädlich, K.
Tematy:
factory building
process
energy interaction
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Wydawca:
Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Powiązania:
https://bibliotekanauki.pl/articles/99737.pdf  Link otwiera się w nowym oknie
Opis:
A number of efficient solutions are already in existence today for reducing specific energy and raw material needs, and they are continuously being improved. Since the competition between individual solutions for sustained energy efficiency may prove to be an obstacle to the system as a whole, the interaction of individual elements and sub-systems in complex domains must be considered in an integrated way with an eye to their reciprocal energy effects. What will be the impact of energy savings resulting from innovative approaches and intelligent solutions at a single systemic level on the system as a whole? Do they serve to reduce overall energy costs? What kinds of energy-related information are necessary to answer these questions? This article examines the issue of how dedicated energy savings in the production sector impact on the total energy requirement in factory systems. In one example, process and building are examined together in order to thereby recognize energy relationships. It was demonstrate that waste heat from machine tools has a significant impact on the factory hall climate and therefore on the heating needs of factory buildings. A model calculation demonstrated that energy savings at individual system levels are transferable to the entire system in direct proportion to the energy efficiency of the building.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of grinding methods on the preparation of ultra-clean coal from slime
Autorzy:
Wang, Ruiyang
Gao, Liang
Liu, Wenli
Zhuo, Qiming
Tematy:
ultra-clean coal
grinding method
interaction energy
flotation
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Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Powiązania:
https://bibliotekanauki.pl/articles/2175430.pdf  Link otwiera się w nowym oknie
Opis:
This study discusses the technology of coal slime recovery for preparing ultra-clean coal (UCC). X-ray diffraction analysis (XRD) and scanning electron microscopy combined with energy dispersive spectroscopy (SEM-EDS) were used to analyze the characteristics of coal slime and to explore the types of minerals and embedded characteristics of coal slime. The particle interaction energy and contact angle analysis were used to determine the UCC preparation process through dry and wet grinding dissociation comparison and shear flocculation flotation tests, combined with zeta potential measurements. The results showed that the inorganic minerals in the slime were mainly kaolinite clay minerals, which were easy to mud in the pulp and needed grinding. The calculation results of the interaction energy indicated that the interaction force of dry-ground slime in the pulp was small, and flocculation was more likely to occur. The wet-ground product was subjected to three flotations to obtain UCC with an ash content of 0.95%.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Zinc ion adsorption on carbon nanotubes in an aqueous solution
Autorzy:
Ansari, A.
Mehrabian, M. A.
Hashemipour, H.
Tematy:
adsorption
molecular dynamics simulation
heavy metals
electrostatic force
interaction energy
functional groups
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Wydawca:
Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Powiązania:
https://bibliotekanauki.pl/articles/779155.pdf  Link otwiera się w nowym oknie
Opis:
The literature devoted to numerical investigation of adsorption of heavy metal ions on carbon nanotubes is scarce. In this paper molecular dynamics is used to simulate the adsorption process and to investigate the effect of the infl uencing parameters on the rate of adsorption. The predictions of the molecular dynamics simulation show that the adsorption process is improved with increasing the temperature, pH of solution, the mass of nanotubes, and surface modifi cation of CNT using hydroxyl and carboxyl functional groups. The results predicted by the model are compared with the experimental results available in the literature; the close agreement validates the accuracy of the predictions. This study reveals that the water layers around the carbon nanotubes and the interaction energies play important roles in the adsorption process. The study also shows that electrostatic force controls the attraction of zinc ions on the nanotube sidewall.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Surface interaction energy simulation of ceramic materials with epoxy resin
Symulacja energii oddziaływań powierzchni materiałów ceramicznych z żywicą epoksydową
Autorzy:
Fei-Zhou, L.
Zheng-Lin, L.
Zhi-Huai, Y.
Kai, Q.
Tematy:
epoxy resin
simulation
interaction energy
ceramic material
żywica epoksydowa
symulacja
energia oddziaływań
materiał ceramiczny
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Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Chemii Przemysłowej
Powiązania:
https://bibliotekanauki.pl/articles/947496.pdf  Link otwiera się w nowym oknie
Opis:
A new method to calculate the surface interaction energy of ceramic particles and epoxy resin network was investigated using the Material Studio software solution. Detailed simulations were performed with molecular dynamics (MD) method, using Amorphous Cell module, creating relatively simple surface models of polymer (epoxy resin) and ceramics (Al2O3, SiO2 and SiC). The surface models obtained were used to calculate properties and the surface interaction energy of the materials studied. The computed results are in good agreement with the experimental data, confirming the ability to employ the described simulation method in theoretical evaluation of interaction between various filler or reinforcing materials and the polymer matrix.
Testowano nową metodę obliczania energii oddziaływań powierzchni cząstek ceramicznych z żywicą epoksydową. Obliczenia wykonywano korzystając z oprogramowania Material Studio. Szczegółowe symulacje prowadzono metodą dynamiki molekularnej (MD) za pomocą modułu Amorphous Cell, tworząc modele powierzchni polimeru (żywicy epoksydowej) imateriału ceramicznego (Al2O3, SiO2 lub SiC). Otrzymane modele posłużyły do obliczeń właściwości oraz energii oddziaływań powierzchni badanych materiałów. Uzyskano dobrą zgodność wyników symulacji zdanymi doświadczalnymi, co potwierdziło możliwość zastosowania opisanej metody symulacji do teoretycznej oceny oddziaływania różnych napełniaczy ceramicznych z matrycą polimerową.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Efekt kooperatywności oddziaływań iekowalencyjnych w wybranych układach molekularnych stabilizowanych wiązaniami wodorowymi i halogenowymi
Cooperativity effect in noncovalent interactions of selected molecular complexes stabilised by hydrogen and halogen bonds
Autorzy:
Domagała, Małgorzata
Dominikowska, Justyna
Palusiak, Marcin
Tematy:
wiązanie halogenowe
wiązanie wodorowe
energia oddziaływania
efekt kooperatywny
modelowanie molekularne
halogen bond
hydrogen bond
interaction energy
cooperativity effect
molecular modelling
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Wydawca:
Polskie Towarzystwo Chemiczne
Powiązania:
https://bibliotekanauki.pl/articles/172440.pdf  Link otwiera się w nowym oknie
Opis:
Among various so-called weak interactions, a halogen bond [8 and references therein] is currently probably one of more explored by researchers. This is due to the fact that it has several properties in common with the hydrogen bonding, and thus, similarly as already well characterised H-bond, it may have a crucial role in different physical, chemical, and biological processes. This bond is formed due to stabilising interactions between a region of positive charge located on a surface of the halogen atom and the other atomic center possessing the electron charge surplus (e.g. a lone pair) [8]. The region of positive charge appears on the halogen atom surface due to deformation of its electron cloud resulting in its ellipsoidal shape with the short axis opposite the covalent bond and the long axis in the perpendicular direction [11]. This results in a particular distribution of local charges on the atomic surface, as shown in Figure 1. As a consequence the halogen atom may exhibit a dual character, acting as either electron charge donor or acceptor, depending on the type of interaction and the direction of the appearing interactomic contact. A good example of such situation is shown in Figure 2. Thus, one may consider the situation when two interactions are formed simultaneously and the halogen atom acts as an electron charge donor and acceptor at the same time. For such situation the synergism of both interactions may strengthen complexation. In order to analyze that case, various representative complexes were investigated [13, 17, 18, 20, 21] by means of many-body interaction approach [5, 6]. In general, it appears that as distinct to hydrogen bond [2–4], the synergism is rather weak, with some exceptions for iodine atom due to stronger halogen bonds formed by that atomic centre [13, 17, 18]. In the case of halo-amine tetramers [21] the additional stabilising effect derived from back bonding of π type was found – for the first time for a halogen bond.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ecoenergetic cutting techniques
Autorzy:
Zaborowski, T.
Shvartsburg, L.
Ivanova, N.
Ryabov, S.
Tematy:
technology
machining
quality
energy
ecology
interaction
safety
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Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Powiązania:
https://bibliotekanauki.pl/articles/407454.pdf  Link otwiera się w nowym oknie
Opis:
The article discusses the relationship between energy quality technologies cutting and their environmental friendliness. Based on the energy analysis shows that energy consumption in the individual technological process is connected with the cutting power and power loss, which form the environmental indicators of the cutting process and reduce its energy efficiency. In addition, it is shown that at implementation of technological processes on the equipment, electrical systems are AC systems the implementation of the cutting process occurs when excessive consumption of currents. The article presents the results of studies on the energy efficiency of cutting processes, definition of the complex influence of cutting processes on the environment and humans, the formation of ways of improving environmental and energy performance quality of these processes.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Strong and Weak Interactions in Ghahramany’s Integrated Nuclear Binding Energy Formula
Autorzy:
Seshavatharam, U. V. S.
Lakshminarayana, S.
Tematy:
Strong interaction
Electroweak interaction
Ghahramany’s integrated nuclear binding energy formula
Nuclear drip lines
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Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Powiązania:
https://bibliotekanauki.pl/articles/1839395.pdf  Link otwiera się w nowym oknie
Opis:
By modifying Ghahramany’s integrated nuclear binding energy formula with strong and weak interaction features, it is possible to approximate nuclear binding energy of isotopes with one unique energy coefficient and four terms. Considering even-odd corrections, shell corrections and other microscopic corrections, it seems possible to improve the accuracy. Based on our recent work and the proposed formulae, we are very confident to say that, quark structure helps in increasing nuclear binding energy and electroweak interaction helps in reducing nuclear binding energy.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Envisioning the UN Sustainable Development Goals (SDGs) through the lens of energy sustainability (SDG 7) in the post-COVID-19 world
Autorzy:
Shafiullah, GM
Arif, M.T.
Nadarajah, Mithulananthan
Kumar, Nallapaneni Manoj
Elavarasan, Rajvikram Madurai
Chopra, Shauhrat S.
Dyduch, Joanna
Jamal, Taskin
Pugazhendhi, Rishi
Opis:
The United Nations (UN) have formulated seventeen Sustainable Development Goals (SDGs) and thus, humans were trying to traverse the sustainable path. Meanwhile, the COVID-19 pandemic has emerged and forced out the ephemeral conventional approaches. Thus, the post-COVID world indicates the need for sustainable development and strategies in par with the ecosystem. The authors propose this study as a guide to direct the post-pandemic scenario into the sustainable pathway by prioritizing energy sustainability to engage the actions for achieving the SDGs. The analysis in this study commences with the investigation of pronounced impacts in the energy sector with its influence on the progress towards sustainability. To pursue the path of energy sustainability, a qualitative analysis is performed in a parallel approach from the key viewpoint of the renewable and sustainable energy transition, digital transformation of the energy sector and energy affordability in the post-COVID world. A SWOT-AHP hybrid methodology is employed to identify the significance of each strategy or issues to be focused on immediately in the post-COVID world. The study also discusses energy sustainability from political bodies and policy makers' perspective, and the actual scenario where we are headed is revealed with the aid of process-tracing method. Furthermore, a novel quantitative analysis is established to represent the SDG's interaction and the result shows that the SDG 7 is the underpinning goal in relative to other SDGs. In context with it, the mapping of energy sustainability to the sustainable world is accomplished. The ultimate inference from envisioning the SDGs through energy sustainability shows that a sustainable world would result after the pandemic. However, the changes in the energy market, investment preferences and more importantly, the decisions influenced by the political bodies in the post-COVID-world is decisive in achieving the same in a stipulated time frame.
Dostawca treści:
Repozytorium Uniwersytetu Jagiellońskiego
Artykuł
Tytuł:
Structural Properties of Some Alkali Metal Hydrides at High Temperature and Pressure
Autorzy:
Thakre, V.
Singh, S.
Tematy:
hydrides
phase transition
three-body interaction
volume collapse
elastic constants
cohesive energy
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Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Powiązania:
https://bibliotekanauki.pl/articles/1030544.pdf  Link otwiera się w nowym oknie
Opis:
In this paper we have developed a realistic interaction potential model to study the high pressure phase transition of ionic alkali-metal compounds KH and NaH, having B₁ structure at room temperature. We have theoretically investigated phase transition pressures and volume collapses of KH and NaH at high temperatures, and found results well suited with available experimental data. The elastic constants and their pressure derivatives are reported first time. The thermodynamical properties of B₁ phase of KH and NaH are also predicted. The inclusion of temperature effect in TBIP makes the present model realistic and suitable for theoretical high-pressure studies.
Dostawca treści:
Biblioteka Nauki
Artykuł

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