Relevant bibliographies by topics / Core-Level Shift

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Core-Level Shift'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Core-Level Shift.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Journal articles on the topic "Core-Level Shift"

1

Johansson, L. S. O., R. Gunnella, E. L. Bullock, C. R. Natoli, and R. I. G. Uhrberg. "Surface core-level shift photoelectron diffraction from." Applied Surface Science 104-105 (September 1996): 88–94. http://dx.doi.org/10.1016/s0169-4332(96)00125-0.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Paolucci, G., and K. C. Prince. "Surface core-level shift of lead sulfide." Physical Review B 41, no. 6 (February 15, 1990): 3851–53. http://dx.doi.org/10.1103/physrevb.41.3851.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Johansson, L. I., H. I. P. Johansson, E. Lundgren, J. N. Andersen, and R. Nyholm. "Surface core level shift on Be( 112̄0)." Surface Science 321, no. 3 (December 1994): L219—L224. http://dx.doi.org/10.1016/0039-6028(94)90178-3.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Barrett, S. D., A. M. Begley, P. J. Durham, and R. G. Jordan. "Surface core level shift in Y(0001)." Solid State Communications 71, no. 2 (July 1989): 111–14. http://dx.doi.org/10.1016/0038-1098(89)90445-6.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Muller, D. A. "Core Level Shifts and Grain Boundary Cohesion." Microscopy and Microanalysis 4, S2 (July 1998): 766–67. http://dx.doi.org/10.1017/s1431927600023953.

Full text
Abstract:
The role of core level shifts at metallic interfaces has often been ignored in electron energy loss spectroscopy (EELS) even though very small changes in bond length can lead to large core level shifts. However, the popular interpretation of core level shifts as measures of charge transfer is highly problematic. For instance, in binary alloys systems, the core level shifts can be the same sign for both atomic constituents[l]. The simple interpretation would require that both atomic species had lost or gained charge. Further, the signs of the core level shifts can be opposite to those expected from electronegativity arguments[2]. A core level shift (CLS) is still possible, even when no charge transfer occurs. As illustrated in Fig. 1, if the valence band width is increased, the position of the center of the valence band with respect to the Fermi energy will change (as the number of electrons remains unchanged).
APA, Harvard, Vancouver, ISO, and other styles
6

Barrett, S. D., A. M. Begley, P. J. Durham, R. G. Jordan, and W. M. Temmerman. "The surface core-level shift in Y(0001)." Journal of Physics: Condensed Matter 1, SB (October 1, 1989): SB243—SB244. http://dx.doi.org/10.1088/0953-8984/1/sb/060.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Nagashima, Umpei, and Shin-ichi Nagaoka. "Dependence of Chemical Shift Difference on Core-Level." Bulletin of the Chemical Society of Japan 82, no. 10 (October 15, 2009): 1248–49. http://dx.doi.org/10.1246/bcsj.82.1248.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Prince, K. C., B. Ressel, C. Astaldi, M. Peloi, R. Rosei, M. Polcik, C. Crotti, et al. "Surface core level shift photoelectron diffraction of Rh(100)." Surface Science 377-379 (April 1997): 117–20. http://dx.doi.org/10.1016/s0039-6028(96)01347-7.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Kim, Jeong Won, Sehun Kim, Jae Myung Seo, Shin-ichiro Tanaka, and Masao Kamada. "Surface core-level shift of InSb(111)-2×2." Physical Review B 54, no. 7 (August 15, 1996): 4476–79. http://dx.doi.org/10.1103/physrevb.54.4476.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Navas, E., K. Starke, C. Laubschat, E. Weschke, and G. Kaindl. "Surface core-level shift of 4fstates for Tb(0001)." Physical Review B 48, no. 19 (November 15, 1993): 14753–55. http://dx.doi.org/10.1103/physrevb.48.14753.

Full text
APA, Harvard, Vancouver, ISO, and other styles
More sources

Dissertations / Theses on the topic "Core-Level Shift"

1

Derby, Glyn Peter. "Surface core level shift studies of adsorbate covered tungsten single crystal surfaces." Thesis, University of Liverpool, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.257131.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Marten, Tobias. "Ab-initio study of disorder broadening of core photoemission spectra in random metallic alloys." Thesis, Linköping University, The Department of Physics, Chemistry and Biology, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-2580.

Full text
Abstract:

Ab-initio results of the core-level shift and the distribution about the average for the 3d5/2 electrons of Ag, Pd and 2p3/2 of Cu are presented for the face-centered-cubic AgPd and CuPd random alloys. The complete screening model, which includes both initial and final states effects in the same scheme, has been used in the investigations.

The alloys have been modeled with a supercell containing 256 atoms. Density-functional theory calculations are carried out using the locally self consistent Green's function approach.

Results from the calculations clearly shows that the core-level shift distributions characteristic is Gaussian, but the components reveals a substantial difference in the FWHM (Full-Width at Half-Maximum). Comparison between the experimental and the calculated broadening shows a remarkable agreement.

APA, Harvard, Vancouver, ISO, and other styles
3

Olovsson, Weine. "Influence of Global Composition and Local Environment on the Spectroscopic and Magnetic Properties of Metallic Alloys." Doctoral thesis, Uppsala University, Department of Physics, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-5823.

Full text
Abstract:

Theoretical investigations of spectroscopic and magnetic properties of metallic systems in the bulk, as well as in nanostructured materials, have been performed within the density functional theory. The major part of the present work studies the differences between binding energies of electrons tightly bound to the atoms, the so-called core electrons (in contrast with the valence electrons), that is, core-level binding energy shift (CLS).

By comparison between corresponding elemental core-levels for atoms situated in different chemical environments we obtain fundamental understanding of bonding properties of materials. The method of choice was the complete screening picture, which includes initial and final state effects on the same footing. The usefulness of CLS stems from that it is sensitive to differences in the chemical environment of an atom, which can be affected on one hand by the global composition of e.g. disordered materials, surfaces and interfaces, and on the other hand by the very local environment around an atom. Here CLSs have been obtained for both components in the fcc random alloys AgPd, CuPd, CuNi, CuPt, CuAu, PdAu, NiPd and NiPt. Moreover the model was extended to the Auger kinetic energy shift for the LMM Auger transition in AgPd alloys. Studies were also applied to the near surface and interface regions of PdMn nano structures on Pd(100), thin CuPd and AgPd films on inert Ru(0001), and at interfaces. The disorder broadening on CLS due to local environment effects was calculated in selected alloys.

A part of the thesis concern investigations related to the magnetic ordering in Invar alloys, including the influence of local environment effects. A study was made for the dependence of effective exchange parameter on the electron concentration, volume and local chemical composition.

APA, Harvard, Vancouver, ISO, and other styles
4

Göransson, (Asker) Christian. "First-Principles calculations of Core-Level shifts in random metallic alloys: The Transition State Approach." Thesis, Linköping University, Department of Physics, Chemistry and Biology, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-2581.

Full text
Abstract:

The overall aim of this thesis is to compare different methods for calculation of Core-Level shifts in metallic alloys. The methods compared are the Initial State model, the Complete screening and the Transition state model. Core-level shifts can give information of chemical bonding and about the electronic structure in solids.

The basic theory used is the so-called Density-Functional-Theory, in conjunction with the Local-Density Approximation and the Coherent-Potential- Approximation. The metallic alloys used are Silver-Palladium, Copper-Palladium, Copper-Gold and Copper-Platinum, all inface-centered-cubic configuration.

The complete screening- and the transition-state model are found to be in better agreement with experimental results than those calculated with the initial state model. This is mainly due to the fact that the two former models includes final-state effects, whereas the last one do not. The screening parameters within the Coherent-Potential approximation are also investigated. It is found that the Screened-Impurity Model can extend the validity of the Coherent-Potential-Approximation and increase it's accuracy.

APA, Harvard, Vancouver, ISO, and other styles
5

Asker, Christian. "Effects of disorder in metallic systems from First-Principles calculations." Doctoral thesis, Linköpings universitet, Teoretisk Fysik, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-53584.

Full text
Abstract:
In this thesis, quantum-mechanical calculations within density-functional theory on metallic systems are presented. The overarching goal has been to investigate effects of disorder. In particular, one of the properties investigated is the bindingenergy shifts for core electrons in binary alloys using different theoretical methods. These methods are compared with each other and with experimental results. One such method, the so-called Slater-Janak transition state method relies on the assumption that the single-particle eigenvalues within density-functional theory are linear functions of their respective occupation number. This assumption is investigated and it is found that while the eigenvalues to a first approximation show linear behavior, there are also nonlinearities which can influence the core-level binding energy shifts. Another area of investigation has been iron based alloys at pressures corresponding to those in the Earth’s inner core. This has been done for the hexagonal close packed and face entered cubic structures. The effects of alloying iron with magnesium and nickel on the equation of state as well on the elastic properties have been investigated. The calculations have shown that the hexagonal close packed structure in FeNi is more isotropic than the face-centered cubic structure, and that adding Mg to Fe has a large impact on the elastic properties. Finally, the effects of disorder due to thermal motion of the atoms have been investigated through ab-initio molecular dynamics simulations. Within the limits of this method and the setup, it is found that the face-centered cubic structure of molybdenum can be dynamically stabilized at high temperature, leading to a metastable structure, on the average. The dynamical stabilization of face-centered cubic molybdenum also rendered it possible to accurately calculate the lattice stability relative to the body-centered cubic phase. Inclusion of temperature effects for the lattice stability using ab-initio molecular dynamics simulations resolves the disagreement between ab-initio calculations and thermochemical methods.
APA, Harvard, Vancouver, ISO, and other styles
6

Tsan, Chun Ching, and 詹俊清. "The Surface Core Level Shift and the Oxidation of the Nb(100) Surface." Thesis, 1994. http://ndltd.ncl.edu.tw/handle/29335585340677137057.

Full text
APA, Harvard, Vancouver, ISO, and other styles

Books on the topic "Core-Level Shift"

1

Egelhoff, W. F. Core-level binding-energy shifts at surfaces and in solids. Amsterdam: North-Holland, 1986.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
2

Ward, Tony, and Anthony Beech. The explanation of sexual offending. Edited by Teela Sanders. Oxford University Press, 2017. http://dx.doi.org/10.1093/oxfordhb/9780190213633.013.3.

Full text
Abstract:
This essay focuses on four core issues and their normative implications associated with the “theory problem” as it relates to sexual offending. First, a critical task is to build multi-level and interfield theories that are directly responsive to the complex nature of human functioning and psychological architecture. Second, an important cognitive task is to take seriously the level of human agency and mental state psychological explanations of action. This requires accepting the significance of values and personal meanings, and appreciating that social and cultural practices causally influence a person’s sense of self and purpose in life. Third, we need to shift our attention from construct validity procedures and look to understand underlying causal processes. A preoccupation with measurement may trap us into surface-level explanations. Finally, some degree of integration should be attempted between research and conceptual work on dynamic risk factors and that on aetiological theories.
APA, Harvard, Vancouver, ISO, and other styles
3

Thompson, William R., and Leila Zakhirova. Energy, Technology, and (Possibly) the Nature of the Next World Economy Upswing. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780190699680.003.0010.

Full text
Abstract:
In the last several upswings of the world economy, core innovations paired new engines with new fuels: steam engines with coal, internal combustion engines with petroleum, and numerous electricity-driven applications with fossil fuels. In each instance, the new fuels initially were inexpensive, abundant, and incredibly powerful but also damaging to the climate and environment. Now we need to develop engines that can run using decarbonized fuels to minimize CO2 emissions. In this chapter we shift our focus to the implications of carbon-based energy sources, system leadership, and climate change. We first review the evidence for a strong relationship between global warming and fossil fuels and then consider what might be done to forestall the consequences of such a relationship.We then relate macro-level fluctuations in world economic growth to policy responses focusing largely on electricity and transportation.
APA, Harvard, Vancouver, ISO, and other styles
4

Sandstrom, Marlene J. The Peer Nature of Relational Aggression. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780190491826.003.0011.

Full text
Abstract:
Relational aggression (RA), which involves the manipulation of a target’s relationships, peer status, or reputation, is an inherently interpersonal weapon. This chapter focuses on the peer context of RA, and addresses core questions about the association between RA and social constructs such as group acceptance, rejection, popularity, and friendship. What are the interpersonal costs and benefits of RA? What factors might explain why some relationally aggressive children are able to achieve and maintain popularity and social centrality despite being disliked? How does RA play out within mutual friendships? And how do the peer dynamics surrounding RA shift across development? The chapter begins with a discussion of RA in relation to group-level peer experiences (i.e., peer liking/acceptance; disliking/rejection; perceived popularity) and then turns to an exploration of RA within the context of friendships. It concludes with a discussion of selection and influence effects in regard to relationally aggressive behavior.
APA, Harvard, Vancouver, ISO, and other styles
5

(Contributor), H. P. Bonzel, R. Denecke (Contributor), W. Eck (Contributor), A. Föhlisch (Contributor), G. Held (Contributor), W. Jaegermann (Contributor), N. Martensson (Contributor), T. Mayer (Contributor), H. Over (Contributor), and H. P. Steinrück (Contributor), eds. Adsorbed Species on Surfaces and Adsorbate-Induced Surface Core Level Shifts (Landolt-Bornstein: Numerical Data and Functional Relationships in Science and Technology - New Series). Springer, 2005.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
6

Datta, K. L. Growth and Development Planning in India. Oxford University Press, 2021. http://dx.doi.org/10.1093/oso/9780190125028.001.0001.

Full text
Abstract:
The central theme of this book is to appraise the role of planning to maximize the rate of economic growth, and improve the standards of living and quality of life of the people in India since Independence. The book addresses four core areas. First, it delves into the circumstances which led to the adoption of planning and presents a comprehensive analysis of the economic scenario that unfolded in the six decades between 1951 and 2011, documenting shifts in growth and development strategy. Second, it explores the rate and pattern of economic growth, and traces reasons behind the shortfall in growth rate from the target. Third, the book contextualizes the backdrop against which economic reform measures were introduced to understand how different areas and sectors of the economy were integrated with the reform process. Fourth, it analyses the transition from growth measures pursued until the 1970s, to a mix of growth and redistribution from the 1980s, and then to inclusive growth in the 2000s, and finds out how income, especially of the poor and marginalized sections of the population increased. It makes an assessment of the level and change in poverty over time, and the impact of economic growth on poverty reduction. These four thematic areas of the book are essential to understand the process of economic growth and its impact on the lives of the people in India's rapidly changing socio-economic environment. Finally, it assesses the economic scenario in the 2010s, when planning was abandoned, and pinpoints the reasons behind dipping growth rate, and suggests measures for its revival.
APA, Harvard, Vancouver, ISO, and other styles

Book chapters on the topic "Core-Level Shift"

1

Purcell, K. G., J. Jupille, and D. A. King. "High Resolution Core Level Shift Spectroscopy from Tungsten Single Crystal Planes." In Solvay Conference on Surface Science, 477–83. Berlin, Heidelberg: Springer Berlin Heidelberg, 1988. http://dx.doi.org/10.1007/978-3-642-74218-7_44.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Bisi, O., S. Ossicini, and C. Arcangeli. "Theory of Core-Level Shifts of Clean and Covered Surfaces." In Cluster Models for Surface and Bulk Phenomena, 223–32. Boston, MA: Springer US, 1992. http://dx.doi.org/10.1007/978-1-4684-6021-6_18.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Johansson, L. I. "Surface shifts in core level energies of transition metal carbides and nitrides." In The Chemistry of Transition Metal Carbides and Nitrides, 455–72. Dordrecht: Springer Netherlands, 1996. http://dx.doi.org/10.1007/978-94-009-1565-7_25.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Pasquarello, Alfredo, Mark S. Hybertsen, G. M. Rignanese, and Roberto Car. "Core-Level Shifts in Si(001)-SiO2 Systems: The Value of First-Principle Investigations." In Fundamental Aspects of Ultrathin Dielectrics on Si-based Devices, 89–102. Dordrecht: Springer Netherlands, 1998. http://dx.doi.org/10.1007/978-94-011-5008-8_7.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Jupille, J., K. G. Purcell, G. Derby, J. Wendelken, and D. A. King. "Surface Core Level Shifts for the Clean-Surface and Hydrogen-Induced Phase Transitions on W(l00)." In Springer Series in Surface Sciences, 463–69. Berlin, Heidelberg: Springer Berlin Heidelberg, 1988. http://dx.doi.org/10.1007/978-3-642-73343-7_76.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Wagner, Gerhard. "Tort Law and Human Rights." In Interdisciplinary Studies in Human Rights, 209–33. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-73835-8_12.

Full text
Abstract:
AbstractThe article explores the relationship between tort law and human rights. It explains the potential inherent in holding corporations liable in tort for human rights violations along the supply chain, such as the 2013 Rana Plaza collapse in Bangladesh. On a theoretical level, it devises a legal framework of tort liability that is optimal from the standpoint of social welfare. Such an optimal liability system would make manufacturers internalise the full cost of production, including harm caused to workers, third parties and the environment. In contrast, the present global liability situation is characterised by legal fragmentation and enforcement deficits. These factors provide the explanation for the large-scale externalisation of production risks we witness today, leading to an inflated global demand. In principle, tort law is well suited to offer a remedy, as the interests protected by human rights and national tort law broadly overlap. Furthermore, the duty of care which is the core requirement for shifting losses to others via tort law is a flexible concept that may even be stretched to accommodate cross-border human rights policies. The new French “devoir de vigilance,” or human rights due diligence, as well the UK Supreme Court’s recent jurisprudence, aim to tap this potential. On the other hand, the article raises doubt in relation to the adverse economic incentives and market shifts if such duties are imposed selectively, i.e. only in some jurisdictions, but not in others. After all, private international law often stands in the way of a global application of national tort law. Finally, alternative mechanisms of enforcement are assessed and examined with a view to their comparative effectiveness. This analysis casts doubt on the usefulness of tort law as a means to further the human rights cause.
APA, Harvard, Vancouver, ISO, and other styles
7

JUGNET, Y., G. GRENET, and TRAN MINH DUC. "SURFACE CORE LEVEL SHIFT." In Handbook on Synchrotron Radiation, 663–722. Elsevier, 1987. http://dx.doi.org/10.1016/b978-0-444-87046-9.50031-4.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Tiwari, Anurag, and Suneet Gupta. "Learning With Software-Defined Area." In Advances in Systems Analysis, Software Engineering, and High Performance Computing, 291–305. IGI Global, 2018. http://dx.doi.org/10.4018/978-1-5225-3640-6.ch014.

Full text
Abstract:
The idea of software-defined networking (SDN) is a paradigm shift in computer networking. There are various advantages of SDN (e.g., network automation, fostering innovation in network using software, minimizing the CAPEX and OPEX cost with minimizing the power consumption in the network). SDN is one of the recently developed network-driven methodologies where the core of all lower-level services is operated by one centralized device. Developers tried to develop such approaches to make it easy for an administrator to control information flow from one node to another node. To obtain these services, lower-level static architecture is decoupled for the higher level. This chapter introduces a new approach that is based on complex network processing and forecasting for an event.
APA, Harvard, Vancouver, ISO, and other styles
9

Becker, Harold W. "Understanding Our Potential for Love and Peace." In Advances in Public Policy and Administration, 372–84. IGI Global, 2018. http://dx.doi.org/10.4018/978-1-5225-3032-9.ch027.

Full text
Abstract:
In this presentation, we explore a view of our human potential as an intuitive and evolving understanding on a personal level. Using a phenomenological approach, rather than a traditional analytical social science approach, we can discover the vital qualitative aspects that are not normally considered in a traditional quantitative analysis. The nature of universal love and peace are more experiential and subjective at a primary level, involving a deeper inquiry from the individual's perspective, interpretation and experience. Consciousness and self-awareness are central themes that are essential to a sustainable humanity and planet in this unparalleled epoch of quantum change. Technology, and the more recently emerging real-time worldwide social interactions, are accelerating this new paradigm where typical survival instincts are transforming into creative and collaborative, holistic actions on a global scale. Love and peace are the core attributes leading this shift of the ages and it is all beginning from within.
APA, Harvard, Vancouver, ISO, and other styles
10

Fox, Michael H. "About Those Accidents." In Why We Need Nuclear Power. Oxford University Press, 2014. http://dx.doi.org/10.1093/oso/9780199344574.003.0017.

Full text
Abstract:
A nuclear power plant is undergoing an emergency shutdown procedure known as a “scram” when there is an unusual vibration and the coolant level drops precipitously. Subsequent investigation by a shift supervisor reveals that X-rays of welds have been falsified and other problems exist with the plant that could potentially cause a core meltdown that would breach the containment building and cause an explosion. However, the results of the investigation are squelched and the plant is brought up to full power. The shift supervisor takes the control room hostage but is then shot by a SWAT team as the reactor is scrammed. A meltdown does not actually occur. No, this did not really happen, but these events—portrayed in the movie The China Syndrome —evoked a scenario in which a nuclear core meltdown could melt its way to China and contaminate an area the size of Pennsylvania. It also exposed a nuclear power culture that covered up safety issues rather than fixing them. It made for a compelling anti-nuclear story that scared a lot of people. And then a real core meltdown happened, 12 days later. The worst commercial nuclear power reactor accident in US history began on Three Mile Island, an island in the Susquehanna River three miles downstream from Middletown, Pennsylvania (hence its name). Two nuclear reactors were built on this island, but one of them (TMI-1) was shut down for refueling while the other one (TMI-2) was running at full power, rated at 786 MWe. At 4:00 a.m., what should have been a minor glitch in the secondary cooling loop began a series of events that led to a true core meltdown, but no China syndrome occurred and there was little contamination outside the plant. Nevertheless, it caused panic, roused anti-nuclear sentiment in the country, and shut down the construction of new nuclear power plants in the United States for decades. The nuclear reactors at Three Mile Island were pressurized water reactors (PWR), the type of reactor that Admiral Rickover had designed for power plants in US Navy nuclear submarines.
APA, Harvard, Vancouver, ISO, and other styles

Conference papers on the topic "Core-Level Shift"

1

Zhang, K. Z., L. M. Meeuwenberg, M. M. Banaszak Holl, and F. R. McFeely. "Si 2p Core-Level Shift Assignments: An Analysis of Recent Experimental and Theoretical Studies." In 1996 International Conference on Solid State Devices and Materials. The Japan Society of Applied Physics, 1996. http://dx.doi.org/10.7567/ssdm.1996.sympo.ii-3.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Bjorkman, C. H., J. L. Alay, H. Nishimura, M. Fukuda, T. Yamazaki, and M. Hirose. "Determination of Chemical Shift in Si2p Core-Level Spectra for Silicon-Hydrogen Bonds on Chemically-Cleaned Su(100) and Si(111) Surfaces." In 1995 International Conference on Solid State Devices and Materials. The Japan Society of Applied Physics, 1995. http://dx.doi.org/10.7567/ssdm.1995.pd-l1-l8.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Kondo, Takao, Kazuaki Kitou, Masao Chaki, Yukiharu Ohga, and Takeshi Makigami. "Thermal Hydraulic Test of Advanced Fuel Bundle With Spectral Shift Rod (SSR) for BWR: Steady State and Transient Test Results and Analysis." In 2012 20th International Conference on Nuclear Engineering and the ASME 2012 Power Conference. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/icone20-power2012-54469.

Full text
Abstract:
Japanese national project of next generation light water reactor (LWR) development started in 2008. Under this project, spectral shift rod (SSR) is being developed. SSR, which replaces conventional water rod (WR) of boiling water reactor (BWR) fuel bundle, was invented to enhance the BWR’s merit, spectral shift effect for uranium saving. In SSR, water boils by neutron and gamma-ray direct heating and water level is formed as a boundary of the upper steam region and the lower water region. This SSR water level can be controlled by core flow rate, which amplifies the change of average core void fraction, resulting in the amplified spectral shift effect. This paper presents the steady state test with varied SSR geometry parameters, the transient test, and the simulation analysis of these steady state and transient tests. The steady state test results showed that the basic functioning principle such as the controllability of SSR water level by flow rate was maintained in the possible range of geometry parameters. The transient test results showed that the change rate of SSR water level was slower than the initiating parameters. The simulation analysis of steady state and transient test showed that the analysis method can simulate the height of SSR water level and its change with a good agreement. As a result, it is shown that the SSR design concept and its analysis method are feasible in both steady state and transient conditions.
APA, Harvard, Vancouver, ISO, and other styles
4

Kondo, Takao, Masao Chaki, Yukiharu Ohga, and Moriyasu Abe. "Thermal Hydraulic Test of Advanced BWR Fuel Bundle With Spectral Shift Rod (SSR): Overview and Pre-Test Analysis by TRACG Code." In 18th International Conference on Nuclear Engineering. ASMEDC, 2010. http://dx.doi.org/10.1115/icone18-29967.

Full text
Abstract:
Japanese national project of next generation light water reactor (LWR) development started in 2008. As one of its development items, the thermal-hydraulic test of spectral shift rod (SSR) is planned. A new component called SSR, which replaces conventional water rod (WR) of boiling water reactor (BWR) fuel bundle, was invented to enhance the BWR’s merit, spectral shift effect for uranium saving. In SSR, water boils by neutron and gamma-ray direct heating and water level is formed as a boundary of the upper steam region and the lower water region. This SSR water level can be controlled by core flow rate, which amplifies core void fraction change, resulting in the amplified spectral shift effect. In this paper, its test plan overview and pre-test analysis by TRACG code is presented. The test plan was developed with the purpose of evaluating SSR thermal-hydraulic characteristics at the actual BWR operating condition (7MPa), such as the controllability of SSR water level, and obtaining data for the validation of calculation method. In the test plan, several types of SSR simulation which covers SSR design in both next generation BWR and conventional BWR were designed. Also test operating conditions such as thermal-hydraulic parameters are determined. In order to evaluate these test specifications, pre-test analysis by TRACG code was conducted. Analysis results of each parameter’s effect on SSR characteristics are consistent with SSR mechanism, which shows that the actual operating condition for SSR fuel is simulated well.
APA, Harvard, Vancouver, ISO, and other styles
5

Zarazovskii, Maksym, Volodymyr Revka, and Liudmyla Chyrko. "Regression Analysis of Transition Temperature Shift Database for the Core Region Beltline Welds of WWER-1000 RPVs." In ASME 2020 Pressure Vessels & Piping Conference. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/pvp2020-21748.

Full text
Abstract:
Abstract The paper describes the history of application in Ukraine the methods of critical temperature of brittleness (CTB is WWER’s analogue of PWRs ductile to brittle transition temperature) prediction. Also, a current state of chemical factor consideration in radiation embrittlement of PWR and WWER regulatory documentation is briefly presented. It is shown that a chemical factor for WWER RPV have to be defined. The present paper devoted to the identification of the radiation embrittlement chemical factor for welds only of RPV core region, since it is the most critical zone in terms of RPV resistance against fast fracture. For that, based on the results of WWER-1000 RPV surveillance program of all Ukrainian NPPs, the CTB shift database is created. And it is important to note that database of Ukrainian WWER-1000 reactors is the biggest among other WWER countries. With using the statistical treatment of CTB shift Database the degree of influence of each chemical element (C, Cr, Cu, Mn, Mo, Ni, P, S and Si) on WWER-1000 RPV weld radiation embrittlement is obtained. It is also found that Silicon and Nickel (in decreasing order) have the greatest impact on the CTB shift. At that, influence of other element separately – is negligible from practical point of view. Nevertheless, due to the literature data (in the radiation material science field) about impact of manganese, additional statistical investigations are performed, which showed us that Nickel and Manganese have synergetic effect which almost the same as level of impact from Silicon element alone. Similar treatments, as with pairs Silicon-Nickel and Silicon-Manganese, as well as Silicon or Nickel with any other element combinations, showed as absence of any other synergetic effect. Based on the statistical evaluation the general shape of CTB shift trend curve is proposed. Moreover, the recommendations related to the CTB shift trendline prediction are given, which, besides the chemical factor and shape of curve, include the way of considering the CTB shift data scatter. The obtained results are expected to be the basis in the modern regulatory method for radiation embrittlement assessment of the Ukrainian WWER-1000 RPVs.
APA, Harvard, Vancouver, ISO, and other styles
6

Richardson, Tony. "The New Tertiary Model and Its Low-Level Impact." In 2002 Informing Science + IT Education Conference. Informing Science Institute, 2002. http://dx.doi.org/10.28945/2564.

Full text
Abstract:
There have been many articles written which describe the changing financial environment currently faced by tertiary institutions. In New Zealand our Universities and Polytechnics have faced a gradual per-student reduction in government funding over the past decade and, despite the public utterances of ministers of education, there is little evidence that this is anything but a continuing trend. This has pushed institutions towards the so-called “commercialisation of the education sector”. It means greater efficiencies in the delivery of courses, greater emphasis on the marketing of popular courses and reductions in the numbers of general and academic staff. The dreaded word “restructuring” has begun to be whispered in the corridors and staff lounges of Universities, a state akin to the whisperings of “downsizing” and “core business concentration” among the true corporates of our economies. Interestingly, this shift in tertiary institution modeling at the macro level has been reflected down at the micro level of individual courses and assessments and it is this low level change which has prompted this paper.
APA, Harvard, Vancouver, ISO, and other styles
7

Noack, Volker. "Increase of Steam Moisture in the BWR-Facility KKP 1." In 10th International Conference on Nuclear Engineering. ASMEDC, 2002. http://dx.doi.org/10.1115/icone10-22266.

Full text
Abstract:
Main steam moisture in a BWR facility is determined by steam quality at core outlet and efficiency of steam separators and steam dryers. Transport of water with steam is accompanied by transport of radionuclides out of RPV resulting in enhanced radiation level in the main steam system. A remarkable increase of main steam moisture started at KKP 1 in 1997. In the following years increase of steam outlet moisture started at lower and lower core mass flow rates. Dose rate in main steam system increased simultaneously. Core mass flow rate and thus thermal power had to be reduced during stretch out operation to keep the main steam moisture below the specified boundary of 0.2%. This boundary also guarantees, that radiological exposure remains far below approved values. The increase of main steam moisture corresponds with the application of low leakage core loading. Low leakage core loading results in enhanced steam generation in the center and in reduced steam generation in the outer zones of the core. It can be shown, that the uneven steam generation in the core became stronger over the years. Therefore, steam quality at inlet of the outer steam separators was getting lower. This resulted in higher carry over of water in this steam separators and steam dryers, thus explaining the increasing main steam moisture. KKP 1 started in 2000 with spectral shift operation. As one should expect, this resulted in reduced steam moisture. It remains the question of steam moisture in case of stretch out operation. Countermeasures are briefly discussed.
APA, Harvard, Vancouver, ISO, and other styles
8

Recoquillon, Yann, Emmanuelle Andrès, and Azeddine Kourta. "Controlling the Intensity of a Bathtub Vortex by Acting on the Upstream Flow." In ASME 2014 4th Joint US-European Fluids Engineering Division Summer Meeting collocated with the ASME 2014 12th International Conference on Nanochannels, Microchannels, and Minichannels. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/fedsm2014-21307.

Full text
Abstract:
In a motor vehicle, the cowl box is a volume located at the bottom of the windshield. It collects rainwater and drains it to provide clean and dry air to the passenger compartment through the ventilation system. When rainwater is accumulated into the box, a bathtub vortex appears above the drain pipe. This vortex sucks up air into the pipe and creates an air core responsible of the decreased water drain rate in the pipe. It leads to an increased water level in the box and can cause a water overflow into the ventilation system. The behavior of this bathtub vortex has been experimentally studied using a simplified geometry representative of a real cowl box. The inlet water flow rate is controlled and a capacitive probe measures water level in the box. The flow has been studied using Particle Image Velocimetry to measure velocity field around the vortex. The flow pattern is described using these data. Due to geometry and inlet conditions, the upstream flow forces the vortex counter-clockwise. It is also responsible for a shift of the vortex axis from the drain axis. In this configuration, the upstream flow is strongly asymmetric and feeds the vortex using less than half the width of the box. Based on these observations, a device has been tested in order to reduce the vortex intensity and consequently the water level. Resulting velocity fields show a better distribution of the upstream flow. The vortex intensity is decreased up to 55% and the water level up to 53%. Despite there is still a vortex with an air core, the water level is therefore significantly reduced. These results are particularly interesting for the cowl box design: if this device can guarantee a lower water level, the cowl box depth can be reduced and space can be saved.
APA, Harvard, Vancouver, ISO, and other styles
9

Merzari, Elia, Ronald Rahaman, Misun Min, and Paul Fischer. "Performance Analysis of Nek5000 for Single-Assembly Calculations." In ASME 2018 5th Joint US-European Fluids Engineering Division Summer Meeting. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/fedsm2018-83517.

Full text
Abstract:
The ExasSMR project focuses on the exascale application of single and coupled Monte Carlo (MC) and computational fluid dynamics (CFD) physics. Work is based on the Shift MC depletion, OpenMC temperature-dependent MC, and Nek5000 CFD codes. The application development objective is to optimize these applications for exascale execution of full-core simulations and to modularize and integrate them into a common framework for coupled and individual execution. Given the sheer scale of nuclear systems, the main algorithmic driver on the CFD side is weak scaling. The focus for the first four years of the project is on demonstrating scaling up to a full reactor core for high-fidelity simulations of turbulence. Full-core fluid calculations aimed at better predicting the steady-state performance will be conducted with a hybrid approach in which large eddy simulation is used to simulate a portion of a core and unsteady Reynolds-averaged Navier-Stokes handles the rest. This zonal hybrid approach provides an additional scaling dimension besides the number of assemblies. The present manuscript focuses on performance assessment using assembly-level simulations with Nek5000. We discuss the development of two benchmark problems: a subchannel (single-rod) problem to assess internode performance and a larger full-assembly problem representative of a small modular reactor (SMR). We note that current SMR assemblies are considerably simpler than pressurized water reactor assemblies since they contain no mixing vanes. This feature allows for considerable reduction in the degrees of freedom required to simulate the full core. We discuss profiling and scaling results with Nek5000, describe current bottlenecks and potential limitations of the approach, and suggest optimizations for future investigation.
APA, Harvard, Vancouver, ISO, and other styles
10

Chen, Jianwen, Shuangjia Zheng, Ying Song, Jiahua Rao, and Yuedong Yang. "Learning Attributed Graph Representation with Communicative Message Passing Transformer." In Thirtieth International Joint Conference on Artificial Intelligence {IJCAI-21}. California: International Joint Conferences on Artificial Intelligence Organization, 2021. http://dx.doi.org/10.24963/ijcai.2021/309.

Full text
Abstract:
Constructing appropriate representations of molecules lies at the core of numerous tasks such as material science, chemistry, and drug designs. Recent researches abstract molecules as attributed graphs and employ graph neural networks (GNN) for molecular representation learning, which have made remarkable achievements in molecular graph modeling. Albeit powerful, current models either are based on local aggregation operations and thus miss higher-order graph properties or focus on only node information without fully using the edge information. For this sake, we propose a Communicative Message Passing Transformer (CoMPT) neural network to improve the molecular graph representation by reinforcing message interactions between nodes and edges based on the Transformer architecture. Unlike the previous transformer-style GNNs that treat molecule as a fully connected graph, we introduce a message diffusion mechanism to leverage the graph connectivity inductive bias and reduce the message enrichment explosion. Extensive experiments demonstrated that the proposed model obtained superior performances (around 4% on average) against state-of-the-art baselines on seven chemical property datasets (graph-level tasks) and two chemical shift datasets (node-level tasks). Further visualization studies also indicated a better representation capacity achieved by our model.
APA, Harvard, Vancouver, ISO, and other styles

Reports on the topic "Core-Level Shift"

1

Paggel, J. J., M. Hasselblatt, and K. Horn. Detection of subsurface core-level shifts in Si 2p core-level photoemission from Si(111)-(1x1):As. Office of Scientific and Technical Information (OSTI), April 1997. http://dx.doi.org/10.2172/603503.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Farr, J., and L. Cox. Core-level binding energy shifts of the light actinide tetrafluorides and dioxides. Office of Scientific and Technical Information (OSTI), October 1989. http://dx.doi.org/10.2172/5555336.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Nelson, A. J., G. Berry, and A. Rockett. Observation of core-level binding energy shifts between (100) surface and bulk atoms of epitaxial CuInSe{sub 2}. Office of Scientific and Technical Information (OSTI), April 1997. http://dx.doi.org/10.2172/603574.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Chen, X., B. P. Tonner, and J. Denlinger. Structural origin of Si-2p core-level shifts from Si(100)-c[4x2] surface: A spectral x-ray photoelectron diffraction study. Office of Scientific and Technical Information (OSTI), April 1997. http://dx.doi.org/10.2172/603550.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Hunter, Fraser, and Martin Carruthers. Iron Age Scotland. Society for Antiquaries of Scotland, September 2012. http://dx.doi.org/10.9750/scarf.09.2012.193.

Full text
Abstract:
The main recommendations of the panel report can be summarised under five key headings:  Building blocks: The ultimate aim should be to build rich, detailed and testable narratives situated within a European context, and addressing phenomena from the longue durée to the short-term over international to local scales. Chronological control is essential to this and effective dating strategies are required to enable generation-level analysis. The ‘serendipity factor’ of archaeological work must be enhanced by recognising and getting the most out of information-rich sites as they appear. o There is a pressing need to revisit the archives of excavated sites to extract more information from existing resources, notably through dating programmes targeted at regional sequences – the Western Isles Atlantic roundhouse sequence is an obvious target. o Many areas still lack anything beyond the baldest of settlement sequences, with little understanding of the relations between key site types. There is a need to get at least basic sequences from many more areas, either from sustained regional programmes or targeted sampling exercises. o Much of the methodologically innovative work and new insights have come from long-running research excavations. Such large-scale research projects are an important element in developing new approaches to the Iron Age.  Daily life and practice: There remains great potential to improve the understanding of people’s lives in the Iron Age through fresh approaches to, and integration of, existing and newly-excavated data. o House use. Rigorous analysis and innovative approaches, including experimental archaeology, should be employed to get the most out of the understanding of daily life through the strengths of the Scottish record, such as deposits within buildings, organic preservation and waterlogging. o Material culture. Artefact studies have the potential to be far more integral to understandings of Iron Age societies, both from the rich assemblages of the Atlantic area and less-rich lowland finds. Key areas of concern are basic studies of material groups (including the function of everyday items such as stone and bone tools, and the nature of craft processes – iron, copper alloy, bone/antler and shale offer particularly good evidence). Other key topics are: the role of ‘art’ and other forms of decoration and comparative approaches to assemblages to obtain synthetic views of the uses of material culture. o Field to feast. Subsistence practices are a core area of research essential to understanding past society, but different strands of evidence need to be more fully integrated, with a ‘field to feast’ approach, from production to consumption. The working of agricultural systems is poorly understood, from agricultural processes to cooking practices and cuisine: integrated work between different specialisms would assist greatly. There is a need for conceptual as well as practical perspectives – e.g. how were wild resources conceived? o Ritual practice. There has been valuable work in identifying depositional practices, such as deposition of animals or querns, which are thought to relate to house-based ritual practices, but there is great potential for further pattern-spotting, synthesis and interpretation. Iron Age Scotland: ScARF Panel Report v  Landscapes and regions:  Concepts of ‘region’ or ‘province’, and how they changed over time, need to be critically explored, because they are contentious, poorly defined and highly variable. What did Iron Age people see as their geographical horizons, and how did this change?  Attempts to understand the Iron Age landscape require improved, integrated survey methodologies, as existing approaches are inevitably partial.  Aspects of the landscape’s physical form and cover should be investigated more fully, in terms of vegetation (known only in outline over most of the country) and sea level change in key areas such as the firths of Moray and Forth.  Landscapes beyond settlement merit further work, e.g. the use of the landscape for deposition of objects or people, and what this tells us of contemporary perceptions and beliefs.  Concepts of inherited landscapes (how Iron Age communities saw and used this longlived land) and socal resilience to issues such as climate change should be explored more fully.  Reconstructing Iron Age societies. The changing structure of society over space and time in this period remains poorly understood. Researchers should interrogate the data for better and more explicitly-expressed understandings of social structures and relations between people.  The wider context: Researchers need to engage with the big questions of change on a European level (and beyond). Relationships with neighbouring areas (e.g. England, Ireland) and analogies from other areas (e.g. Scandinavia and the Low Countries) can help inform Scottish studies. Key big topics are: o The nature and effect of the introduction of iron. o The social processes lying behind evidence for movement and contact. o Parallels and differences in social processes and developments. o The changing nature of houses and households over this period, including the role of ‘substantial houses’, from crannogs to brochs, the development and role of complex architecture, and the shift away from roundhouses. o The chronology, nature and meaning of hillforts and other enclosed settlements. o Relationships with the Roman world
APA, Harvard, Vancouver, ISO, and other styles
You might also be interested in the extended bibliographies on the topic 'Core-Level Shift' for particular source types:
Journal articles
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!

To the bibliography