Search results for "disintegration"
showing 10 items of 57 documents
Photon Asymmetry of Deuteron Photodisintegration Between 160 and 410 MeV
1999
The photon asymmetry Σ of the reaction has been measured across the photon energy range 160–410 MeV at the Mainz Microtron MAMI. Linearly polarized photons were obtained from coherent bremsstrahlung and their energies were determined with the Glasgow tagging spectrometer. The large acceptance detector DAPHNE enabled the outgoing protons to be measured over the complete azimuthal range and for polar angles from 35° to 155° in the c.m. system. The data are compared with existing results and recent theoretical calculations.
Elementary theory and brief history
1991
In the history of the theory of deuteron photodisintegration one may distinguish roughly three periods: (i) the primitive period of the elementary theory using very simple wave functions and forces and considering lowest multipoles (E1, M1) only, (ii) the classical period still in the framework f conventional nuclear physics, but using realstic forces with correspondingly elaborate wave functions and considering also higher multipole transitions, (ii) the post-classic period with explicit treatment of subnuclear degrees of freedom like meson and isobar degrees of freedom and very recently quark-gluon degrees of freedom.
Consistent treatment of relativistic corrections in deuteron photodisintegration in a one-pion-exchange model
1992
Using a one-pion-exchange model for the nucleon-nucleon interaction the relativistic corrections to potential and to the electromagnetic operators are derived in a power expansion of (p/M). All corrections up to the order (p/M)3 are consistently included. Numerical results are shown for differential cross section and polarization observables for deuteron photodisintegration. A sizeable influence of relativistic effects on some observables is found even at low energies. A comparison of our operators with the expressions of other authors is given.
In vitro models for the prediction of in vivo performance of oral dosage forms: Recent progress from partnership through the IMI OrBiTo collaboration
2019
The availability of in vitro tools that are constructed on the basis of a detailed knowledge of key aspects of gastrointestinal (GI) physiology and their impact on formulation performance and subsequent drug release behaviour is fundamental to the success and efficiency of oral drug product development. Over the last six years, the development and optimization of improved, biorelevant in vitro tools has been a cornerstone of the IMI OrBiTo (Oral Biopharmaceutics Tools) project. By bringing together key industry and academic partners, and by linking tool development and optimization to human studies to understand behaviour at the formulation/GI tract interface, the collaboration has enabled …
Interešu konflikts: Kipras un Piedņestras konfliktu salīdzinošā analīze.
2016
. Jau vairāk nekā četrdesmit gadus ilgā Kipras konflikta dēļ, salīdzinājumā ar Piedņestru Kiprai ir vairāk pieredzes mediācijā. Taču Kipras konfliktā gūtā pieredze var kalpot kā pozitīvu un negatīvu mediācijas piemēru kopums, jo abu konfliktu attīstības posmiem ir daudz kopīgu iezīmju. Abi konflikti ir piesaistījis daudzu valstu un starptautisko organizāciju uzmanību, tomēr ne vienmēr viņu iesaistīšanās ir palīdzējusi konflikta atrisināšanas procesā, dažreiz tā ir pat traucējusi konflikta risināšanā. Arī izmaiņas mediācijā dominējošo valstu lomās atspoguļo mainīgo starptautisko attiecību vidi. Konflikti Kiprā un Moldovā apdraud drošību Eiropaā, kas savukārt pierāda vajadzību pārskatīt pastā…
Deuteron photodisintegration at low energies
1991
All presently available experimental data on deuteron photodisintegration below 40 MeV (i.e., total and differential cross sections, photon asymmetry and neutron polarization) are collected and carefully compared with the present status of the conventional theory (i.e., in the framework of mesontheoretical or semi-phenomenologicalN-N potentials including subnuclear degrees of freedom and relativistic corrections). No significant evidence for a failure of the conventional theory is found within the present experimental accuracy.
Relativistic Effects and the Role of Heavy Meson Exchange in Deuteron Photodisintegration
1997
Relativistic effects and the role of heavy meson exchange in deuteron photodisintegration are studied systematically for photon energies below the pion production threshold. In a (p/M)-expansion, all leading order relativistic one-body and pi-exchange as well as all static heavy meson exchange currents consistent with the Bonn OBEPQ model are included. In addition, one- and two-body boost effects have been investigated. Sizeable effects from the various two-body contributions beyond pi-exchange have been found in almost every observable considered, i.e., differential cross section and single polarization observables.
"To ńyma nasz fajer!", czyli o śląskiej polityczności. Elementy integracji i dezintegracji w procesie kształtowania się fenomenu śląskiej etniczności
2022
Przedmiotem artykułu jest analiza elementów integracji i dezintegracji w procesie kształtowania się fenomenu śląskiej etniczności. Autorka proponuje teoriopolityczną interpretację procesów, jakie zaszły na Górnym Śląsku w ostatnich trzech dekadach. W tym celu proponuje posłużenie się kategorią śląskiej polityczności, która ma oddawać specyfikę życia politycznego w regionie. Te jest oparte na wielokierunkowych relacjach podmiotów politycznych wyrażonych w diadzie integracja-dezintegracja. Stanowi ona schemat interpretacyjny pozwalający je opisać w negatywnej zależności, gdy integracja jednego podmiotu jest uwarunkowana dezintegracją drugiego. W tekście autorka proponuje ustrukturyzowanie życ…
What drives the disintegration of the loan origination value chain in the banking business
2015
Purpose - The purpose of this paper is to analyze the vertical disintegration of the bank loan origination value chain. This paper conducts a study on the credit information market from the perspective of the bank's decision to vertically disintegrate the loan origination value chain. The main aim is to identify the relevant drivers of the decision to vertically disintegrate the credit assessment phase in the lending business.Design/methodology/approach - Transaction cost economics and information asymmetry are the typical perspectives of analysis of the vertical scope of business value chains.Findings - This paper argues that in order to capture the drivers underlying the dynamic evolution…
Brokers in the Credit Market: An Examination of the Vertical Scope
2014
This paper analyzes the vertical disintegration of the bank loan origination value chain. The main aim is to identify the relevant drivers which cause the emergence of brokers in the credit market which lead to vertical disintegration of the credit origination value chain. Transaction cost economics is the typical perspective of analysis of the vertical scope of banking value chains. This paper argues that in order to capture the drivers underlying the dynamic evolution of the vertical scope of bank loan origination business models, the above perspectives must be combined and further integrated with a capabilities and resource based view and with a modularity perspective.