A simple physical technique was used in this study to create stable and cost-effective copper oxide (CuO) nanoparticles from pure copper metal using the pulsed laser ablation technique. The synthesis of crystalline CuO nanoparticles was confirmed by various analytical techniques such as particle concentration measurement using atomic absorption spectrometry (AAS), field emission scanning electron microscopy (FE-SEM), the energy dispersive X-ray (EDX), and X-ray diffraction (XRD) to determine the crystal size and identify of the crystal structure of the prepared particles. The main characteristic diffraction peaks of the three samples were consistent. The corresponding 2θ is also consistent, and the cytotoxicity of the nanoparticles was

In this study, Al2O3 thin films were prepared by dc reactive sputtering technique using different gas mixtures of argon and oxygen gases (90:10, 70:30, 50:50, 30:70, and 10:90). These films were characterized to introduce their surface morphology and elemental composition as functions of the oxygen content in the gas mixture. The gas mixing ratio plays a crucial role in controlling the nanoscale morphology of the prepared thin films. The [Al]/[O] ratio varies non-linearly with the Ar:O2​ mixing ratio. Increasing the oxygen content leads to a progressive decrease in surface roughness, resulting in smoother and more uniform films with finer granular features. These results presented herein are useful to optimize the sputtering process to ac

En este trabajo de investigación titulado, tratamos las bases científicas necesarias que debe seguir un crítico competente a la hora de elaborar un proceso critico extenso y preciso de las traducciones literarias de forma satisfactoria, teniendo en consideración mostrar los aspectos tanto lingüísticos como los extralingüísticos del texto original en comparación con el de meta. Actualmente el proceso crítico de las traducciones literarias se pone más importante a fin de aclarar posiciones débiles y de fuerza a las obras literarias y a sus traducciones. Palabras claves: Crítica, Traducción literaria, Problemas, Soluciones

La vorágine es una novela insigne de la literatura colombiana e hispanoamericana que trata de manera singular el tema de la violencia. Este artículo propone una reflexión filosófica novedosa para abordar la violencia como objeto de conocimiento. Se plantea, en primer lugar, un nuevo enfoque a partir de la teoría literaria,enseguida se consideran aspectos del relato, tales como: la doble naturaleza del mundo, el absurdo y la dinámica autoproductiva de la violencia y con ayuda de varios autores, constatamos cómo estos mismos aspectos admiten nuevas aproximaciones. Este artículo nos lleva a pensar nuevas formas de ser y de actuar en el mundo a partir del modo como nos relacionamos con lo otro.

Bodas de sangre es una tragedia en verso del escritor Federico García Lorca escrita en 1932, y estrenada el 8 de marzo de 1933 en el teatro Beatriz de Madrid con gran éxito tanto en España como en Hispanoamérica. Fue llevada al cine por Carlos Saura en 1981. Es una producción poética y teatral que se centra en el análisis de un sentimiento trágico. Desde la vida y la muerte, a lo antiguo y lo moderno, en la manera de ver la tragedia. Todo ello enmarcado en un paisaje andaluz trágico y universal.

   El tema principal que se trata en este drama es la vida y la muerte. Pero de un modo arcano y ancestral, en la que figuran mitos, leyendas y paisajes que introducen al lector en un mundo de

Si Alfonso x el sabio y la Escuela de Traductores de Toledo habia hecho del castellana una lengua apta para la expresión cientifica, fue Pablo Neruda quien aplicó su sentido artistico para crear una poesia amorosa de caracter lileraria. Por lo tanto, pocos poetas han llegado ton populares come. Pablo Neruda, en el mismg tiempo: se comsidera esccitor de una abundante producción literaria ne sólo en su ciudad natal de (Chile), Sino ha sida uno de los padres de la poesia hispanoamericana contemporónea. Ademas la influencia que ejerció en el grupo de poetas de la Generación del 27, con los que empezó a relacionarse durante su estancia en Madrid, fue decisiva también para la poesia espańola. Esa era la razon principal que me hizo pe

The organic compound imidazole has the chemical formula C3N2H4. Numerous significant biological compounds contain imidazole. The amino acid histidine is the most prevalent. The substituted imidazole derivatives have great potential for treating a variety of systemic fungi infections. Thiourea is an organosulfur compound with the formula SC(NH2)2. It is a reagent in organic synthesis. In this paper, some new imidazole and thiourea derivatives are synthesized, characterized, and studied for their biological activity. These new compounds were synthesized from the starting material terephthalic acid, which was transformed to corresponding ester [I] by the refluxing of diacid with methanol in the presence of H2SO4 as a catalyst, compound [I] con

The goal of the extant revision was to explore the influence of  caffeic acid (CA) extracted from Arctium lappa L. on lipid profile and histology of aorta  in rats .  Analytical study demonstrated a high percentage of both chlorogenic and caffeic acid in the 80 % methanol extract of the aerial parts (leaves and stems) of Arctium lappa L. from the family Asteraceace.  Hypolipidemic activity of caffeic acid was studied against cholesterol induced hypercholesterolemia in Wistar albino rats for thirty days. Rats were separated into normal group (A), hypercholesterolemic positive controller group (B). While, the rest three groups (C, D and E) attended as hypercholesterol

The target of this study was to study the natural phytochemical components of the head (capsule) of Cynara scolymus cultivated in Iraq. The head (capsule) of plant was extracted by maceration in70% ethanol for 72 hours, and fractioned by hexane, chloroform and ethyl acetate. Preliminary qualitative phytochemical screening was performed on the ethyl acetate fraction for capsule was revealed the presence of flavonoid and aromatic acids. These were examined by (high -performance liquid chromatography) (HPLC diodarray), (high- performance thin-layer chromatography)(HPTLC).

Flavonoids were isolated by preparative layer chromatography and aromatic acid was isolated by preparative high-

Since its first description as a cytotoxic agent, Olea europaea leaves extract gained significant popularity against human breast cancer, ethyl acetate extract of Olea europaea leaves obtained by acid hydrolysis method was evaluated in vitro as cytotoxic agent against new human breast cancer (AMJ13) cell line, using the MTT assay. One main pentacyclic triterpenoid; oleanolic acid, was isolated from leaves of Olea europaea by well-known two different methods, but not used for this compound before, the acidic hydrolysis method and basic acidic method. The presence of oleanolic acid was proved in both methods with qualitative and quantitative d