We perform a Bayesian model selection analysis for interacting scenarios of dark matter and modified holographic Ricci dark energy (MHRDE) with linear interacting terms. We use a combination of some of the latest cosmological data such as type Ia supernovae, cosmic chronometers, the local value of the Hubble constant, baryon acoustic oscillations measurements and cosmic microwave background through the angular scale of the sound horizon at last scattering. We find moderate/strong evidence against all the MHRDE interacting scenarios studied with respect to $$\Lambda $$ Λ CDM when the full joint analysis is considered.

Se calculó la dosis absorbida en la pared uterina  y feto de una mujer con tres meses de gestación sometida a estudios renales con 99mTc-DTPA, 99mTc-DMSA y 99mTc-MAG3. Para el cálculo dosimétrico se usó la metodología MIRD y la representación antropomórfica de los órganos maternos debido a Stabin. La mayor dosis absorbida por la pared uterina y el feto se obtuvieron con el uso del 99mTc-MAG3. El órgano de la biocinética que contribuye con la mayor dosis es la vejiga. La menor dosis absorbida por la pared uterina y el feto se obtuvieron con el uso del 99mTc-DMSA. El órgano de la biocinética que contribuye con la mayor dosis es el "resto" de órganos.

La violencia y dependencia emocional en parejas adolescentes de educación secundaria está presente en todos los estratos sociales. El objetivo fue establecer la relación entre violencia y dependencia emocional en estudiantes mujeres con pareja de educación secundaria. Los resultados reflejan que un tercio de la muestra sufrió violencia y dependencia emocional moderado y severo, debido al predominio del machismo, desconocimiento de derechos de las mujeres adolescentes y carencia de habilidades emocionales en adolescentes de la región.

In the present work is reported, following a facile process, the synthesis of cobalt ferrite nanoparticles covered with a shell of SiO2, and then, covered with a shell of TiO2. In the first step, cobalt ferrite nanoparticles were prepared by coprecipitation of Co+2 and Fe +2 ions in basic medium, followed by a simple controlled oxidation process carried out by nitrate ions in basic medium with inert atmosphere at 95°C for 24h. In the second step, SiO2 particles were deposited by heterogeneous nucleation onto the surface of the ferrite in alcohol medium by alkalinization of tetraethylortosilane solutions, finally, in the third step, the TiO2 shell film is deposited by using sol-gel technique. Characterization techniques were performed to determine the particle morphology and size distribution (Scanning electron microscopy), crystalline structure (X-ray diffraction). Results showed that cobalt ferrite nanoparticles can be obtained following this synthesis route without using surfactants as size drivers, which is a common reagent in nanoparticle preparation, giving a size distribution of 162 ± 30 nm and a polyhedral geometry. Also, it was observed that SiO2 is homogeneously distributed onto the surface of the cobalt ferrite, and that TiO2 shell films covered well, creating a catalyst that also presents magnetic response. This kind of catalyst nanomaterial, presents a magnetic response, and is a stable and environmentally safe, then could be separated easily from the aqueous medium at the end of the purification process by applying an external magnetic field.

In this work we explore a Holographic Dark Energy Model in a flat Friedmann-LemaÎtre-Robertson-Walker Universe, which contains baryons, radiation, cold dark matter and dark energy within the framework of General Relativity. Furthermore, we consider three types of phenomenological interactions in the dark sector. With the proposed model we obtained the algebraic expressions for the cosmological parameters of our interest: the deceleration and coincidence parameters. Likewise, we graphically compare the proposed model with the ΛCDM model.