Results 31 to 40 of about 716,366 (200)
Numerical Solution of the Spinless Salpeter Equation by a Semianalytical Matrix Method (a Mathematica 4.0 routine) [PDF]
, 2000 In quantum theory, the so-called "spinless Salpeter equation," the relativistic generalization of the nonrelativistic Schroedinger equation, is used to describe both bound states of scalar particles and the spin-averaged spectra of bound states of ...
Lucha, Wolfgang, Schoberl, F. F.
core +3 more sources
Scientists in power plays: How substantive were scientists' narratives during the COVID‐19 pandemic?
Policy Studies Journal, EarlyView.Abstract Scientists who provide expert advice must engage with policy processes. Little is known about whether and how scientists deal with the political dynamics of policy processes that are inherent to policymaking. We study this question by building on the policy dimension concept within the Narrative Policy Framework.
Jule Ksinsik, Caroline Schlaufer
wiley +1 more source
Revista de Saúde Pública, 1998 INTRODUCCIÓN: La Fasciolosis constituye en diversas regiones una fuente importante de pérdidas económicas y cuando se descuidan las medidas de control de sus hospedadores (moluscos), junto a condiciones ecológicas favorables, pueden ocurrir casos ...
Marlene Piña Perez +4 more
doaj +1 more source
Relativistic N-Boson Systems Bound by Oscillator Pair Potentials
, 2003 We study the lowest energy E of a relativistic system of N identical bosons bound by harmonic-oscillator pair potentials in three spatial dimensions. In natural units the system has the semirelativistic ``spinless-Salpeter'' Hamiltonian H = \sum_{i=1}^N \
Franz F. Schöberl +10 more
core +1 more source
Exact Solutions of Bethe-Salpeter Equations with Instantaneous Interactions [PDF]
, 2013 The Bethe-Salpeter approach allows for quantum-field-theoretic descriptions of relativistic bound states; its inherent complexity, however, usually prevents to find its exact solutions.
Lucha, Wolfgang, Schoberl, Franz F.
core +1 more source
The Journal of Latin American and Caribbean Anthropology, Volume 31, Issue 2, June 2026.ABSTRACT The visit to Bogotá of a fééeneminaa (Muinane) friend, Célimo Nejedeka Jifichíu, and in particular, his work in researching and transmitting traditional health knowledge, offer the pretext to navigate the relationship between elements that at first glance seem distant from each other: indigenous imaginaries about otherness, their visions of ...
Giovanna Micarelli
wiley +1 more source
Scientific Reports, 2022 The recurrence of Glioblastoma is partly attributed to the highly resistant subpopulation of glioma stem cells. A novel therapeutic approach focuses on restoring apoptotic programs in these cancer stem cells, as they are often deregulated.
Mariana Belén Vera +9 more
doaj +1 more source
Dynamics of Nerve Conduction Studies in Patients With Guillain–Barré Syndrome
Muscle &Nerve, Volume 73, Issue 5, Page 832-842, May 2026.ABSTRACT Introduction/Aims The value of electrodiagnostic subtyping of Guillain–Barré syndrome (GBS) is still debated. This study aimed to determine the diagnostic yield, timing, and changes of the electrodiagnostic subtyping in patients with GBS in serial nerve conduction studies (NCS).
Samuel Arends +181 more
wiley +1 more source
Energy bounds for the spinless Salpeter equation: harmonic oscillator [PDF]
, 2000 We study the eigenvalues E_{n\ell} of the Salpeter Hamiltonian H = \beta\sqrt(m^2 + p^2) + vr^2, v>0, \beta > 0, in three dimensions. By using geometrical arguments we show that, for suitable values of P, here provided, the simple semi-classical formula ...
Franz F Schöberl +8 more
core +2 more sources
Articulating Sovereignties: Struggles for Subaltern Hegemony in Ecuador and Bolivia
Antipode, Volume 58, Issue 3, May 2026.ABSTRACT This article examines the cycles of articulation and disarticulation between working‐class and indigenous‐campesino movements in Ecuador and Bolivia. While the former advances national‐popular sovereignty, aiming to strengthen the state against imperialism, the latter defends community‐territorial sovereignty against internal colonialism ...
Diego Andreucci +3 more
wiley +1 more source