Results 21 to 30 of about 711,538 (202)

Respuesta al Tratamiento Neoadyuvante en pacientes con Cáncer de Mama en SOLCA-Guayaquil.

open access: yesOncología, 2017
Introducción: La quimioterapia neoadyuvante es ampliamente aceptada como tratamiento de elección en cáncer de mama localmente avanzado. El objetivo de la presente comunicación corta es conocer la tasa de respuesta completa patológica (pRC) luego de ...
Katherine García Matamoros   +5 more
doaj   +1 more source

Actividad molusquicida del Paraiso (Melia azedarach L.) (Meliaceae) sobre Lymnaea cubensis, molusco vector de Fasciolosis

open access: yesRevista 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

Discrete Spectra of Semirelativistic Hamiltonians [PDF]

open access: yes, 2002
We review various attempts to localize the discrete spectra of semirelativistic Hamiltonians of the form H = \beta \sqrt{m^2 + p^2} + V(r) (w.l.o.g. in three spatial dimensions) as entering, for instance, in the spinless Salpeter equation.
Abramowitz M.   +9 more
core   +2 more sources

Various illustrative brief glances at the flavour-cryptoexotic tetraquark states [PDF]

open access: yesEPJ Web of Conferences
Constituting the largest subset of multiquark states so far observed by experiment, tetraquark mesons carrying overall quark flavour quantum numbers identical to those of the (conventional) quark–antiquark mesons necessitate their particularly deliberate
Lucha Wolfgang
doaj   +1 more source

Solving the Schroedinger equation for bound states with Mathematica 3.0 [PDF]

open access: yes, 1998
Using Mathematica 3.0, the Schroedinger equation for bound states is solved. The method of solution is based on a numerical integration procedure together with convexity arguments and the nodal theorem for wave functions. The interaction potential has to
Lucha, Wolfgang, Schoberl, F. F.
core   +4 more sources

Das frestas da conquista: Corpos negros escrevendo a liberdade na saint-domingue (Haiti) do século XVIII

open access: yesDas Amazônias, 2023
Este artículo es un extracto/reformulación de una tesis doctoral defendida en julio de 2023 y tiene como objetivo discutir el choque lingüístico operado por mujeres y hombres esclavizados en la parte occidental de la isla Hispaniola en ...
Armstrong da Silva Santos
doaj   +1 more source

Doubly heavy spin--1/2 baryon spectrum in QCD [PDF]

open access: yes, 2012
We calculate the mass and residue of the heavy spin--1/2 baryons containing two heavy b or c quarks in the framework of QCD sum rules. We use the most general form of the interpolating current in its symmetric and anti-symmetric forms with respect to the
Albuquerque   +27 more
core   +2 more sources

Efectividad y seguridad del esquema genérico lamivudina/zidovudina/efavirenz en pacientes VIH (+). Estudio fase IV y comparación con el mismo esquema de medicamentos innovadores

open access: yesVitae, 2013
Antecedentes: El fortalecimiento de la política de productos competidores (genéricos) se puede acompañar de interrogantes sobre la calidad y, por tanto, sobre la efectividad de algunos de estos medicamentos.
Francisco Javier GUTIÉRREZ HENAO   +5 more
doaj   +2 more sources

Quality of Variational Trial States

open access: yes, 1999
Besides perturbation theory (which clearly requires the knowledge of the exact unperturbed solution), variational techniques represent the main tool for any investigation of the eigenvalue problem of some semibounded operator H in quantum theory.
Franz F. Schöberl   +15 more
core   +1 more source

Energy bounds for the spinless Salpeter equation: harmonic oscillator [PDF]

open access: yes, 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

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