Fractional Newton-Raphson Method Accelerated with Aitken's Method

The Newton-Raphson (N-R) method is characterized by the fact that generating a divergent sequence can lead to the creation of a fractal, on the other hand the order of the fractional derivatives seems to be closely related to the fractal dimension, based on the above, a method was developed that makes use of the N-R method and the fractional derivative of Riemann-Liouville (R-L) that has been named as the Fractional Newton-Raphson (F N-R) method. In the following work we present a way to obtain the convergence of the F N-R method, which seems to be at least linearly convergent for the case where the order $\alpha$ of the derivative is different from one, a simplified way to construct the fractional derivative and fractional integral operators of R-L is presented, an introduction to the Aitken's method is made and it is explained why it has the capacity to accelerate the convergence of iterative methods to finally present the results that were obtained when implementing the Aitken's method in F N-R method.Comment: Newton-Raphson Method, Fractional Calculus, Fractional Derivative of Riemann-Liouville, Method of Aitken. arXiv admin note: substantial text overlap with arXiv:1710.0763

Effects of ultrasound treatments on wine microorganisms

Ultrasound is one of the most promising non-thermal an emerging technique in food technology. The objective of the present work was to evaluate the effect of different ultrasonic treatments on the most important wine microbiota (Saccharomyces and non-Saccharomyces yeasts and lactic acid bacteria). Two stages were carried out: the assessment step, where six different ultrasonic treatments (with varying power, time, and pulses) were used on Saccharomyces cerevisiae, Brettanomyces spp., and Lactiplantibacillus plantarum; and the validation step, where two chosen ultrasonic treatments were used on Zigosaccharomyces bailli, Brettanomyces spp., Saccharomyces cerevisiae, Saccharomyces bayanus, Pichia membranifaciens, Schizosaccharomyces pombe, and Hanseniaspora osmophila. The most sensitive microorganism was Brettanomyces spp., and the most resistant was Lactiplantibacillus plantarum. Ultrasonic treatments had varying effects on vitality (delay of growth or maximum OD reduction) and on viability (reduction of microbial growth)

Cannabidiol Attenuates Sensorimotor Gating Disruption and Molecular Changes Induced by Chronic Antagonism of NMDA receptors in Mice

Background: Preclinical and clinical data suggest that cannabidiol (CBD), a major non-psychotomimetic compound from Cannabis sativa, induces antipsychotic-like effects. However, the antipsychotic properties of repeated CBD treatment have been poorly investigated. Behavioral changes induced by repeated treatment with glutamate N-methyl-D-aspartate receptor (NMDAR) antagonists have been proposed as an animal model of schizophrenia-like signs. In the present study, we evaluated if repeated treatment with CBD would attenuate the behavioral and molecular modifications induced by chronic administration of one of these antagonists, MK-801. Methods: Male C57BL/6J mice received daily i.p. injections of MK-801 (0.1, 0.5, or 1mg/kg) for 14, 21, or 28 days. Twenty-four hours after the last injection, animals were submitted to the prepulse inhibition (PPI) test. After that, we investigated if repeated treatment with CBD (15, 30, and 60mg/kg) would attenuate the PPI impairment induced by chronic treatment with MK-801 (1mg/kg; 28 days). CBD treatment began on the 6th day after the start of MK-801 administration and continued until the end of the treatment. Immediately after the PPI, the mice brains were removed and processed to evaluate the molecular changes. We measured changes in FosB/ΔFosB and parvalbumin (PV) expression, a marker of neuronal activity and a calciumbinding protein expressed in a subclass of GABAergic interneurons, respectively. Changes in mRNA expression of the NMDAR GluN1 subunit gene (GRN1) were also evaluated. CBD effects were compared to those induced by the atypical antipsychotic clozapine. Results: MK-801 administration at the dose of 1mg/kg for 28 days impaired PPI responses. Chronic treatment with CBD (30 and 60mg/kg) attenuated PPI impairment. MK-801 treatment increased FosB/ΔFosB expression and decreased PV expression in the medial prefrontal cortex. A decreased mRNA level of GRN1 in the hippocampus was also observed. All the molecular changes were attenuated by CBD. CBD by itself did not induce any effect. Moreover, CBD effects were similar to those induced by repeated clozapine treatment

Efecto de la doble inoculación de rizobios y micorrizas sobre la producción y calidad del forraje de Leucaena leucocephala.

sumarios (En, Es)Esta investigación evaluó el efecto de la doble inoculación de bacterias rizobiales, Entrophospora colombiana y Glomus sp. sobre la producción y calidad de forraje de Leucaena leucocephala (Lam) de Wit a los 30, 60, 90 y 120 días después de la germinación. A tal fin se evaluaron variables agronómicas, microbiológicas y de composición química. El tratamiento (T9) en el que se inocularon consecutivamente la cepa C-202, E. colombiana y Glomus sp. presentó las mejores respuestas agronómicas y microbiológicas y obtuvo la mayor producción y calidad nutricional del forraje expresada en incrementos de la proteína cruda, la fracción b3 de la proteína y el contenido de fósforo. Las cepas de micorrizas evaluadas mostraron un comportamiento diferente entre sí, mostrando infectividad mas no efectividad en el tratamiento sin inocular. Esto corrobora la necesidad de utilizar la doble inoculación con cepas nativas de micorrizas arbusculares efectivas asociadas a Leucaena leucocephala para lograr una mejor respuesta productiva de esta leguminosa.Pastos y forraje

Farmacopuntura: nivel de neuroleptoanalgesia en felinos utilizando xilacina-tramadol en acupunto yintang

The present work was carried out with the objective of determining the effect of the protocol xylacine-tramadol in acupunct yintang versus intramuscular administration on the level of neuroleptoanalgesy in felines subjected to orchiectomy. For this purpose, 20 felines apparently healthy, older than 8 months of age were used, with negative serology to virus feline immunedeficiency and virus feline leukemia, divided into two groups. The group 1 received pre-medication via intramuscular with xylacine 1 mg/kg + tramadol 2 mg/kg, and group 2 received pre-medication via acupunct yintang with xylacine 0,1 mg/kg + tramadol 2 mg/kg. After 15 minutes, the patients were evaluated according to the Otero Scale for the evaluation of sedation, and the post-surgical evaluation was performed 15 minutes after the procedure, according to the multidisciplinary scale of the UNESP-Botucatu for the evaluation of the acute postoperative pain. The results obtained did not show statistically significant differences (p>0,05) regarding the level of neuroleptoanalgesia between both study groups.El presente trabajo fue realizado con el objetivo de determinar el efecto del protocolo xilacina-tramadol en acupunto yintang versus administración intramuscular, sobre el nivel de neuroleptoanalgesia en felinos sometidos a orquiectomía. Para tal fin, fueron utilizados 20 felinos clínicamente sanos, mayores de 8 meses de edad, con serología negativa a virus inmunodeficiencia felina y virus leucemia felina, divididos en dos grupos. El grupo 1 recibió premedicación vía intramuscular con xilacina 1 mg/kg + tramadol 2 mg/kg y el grupo 2 recibió premedicación vía subcutánea en el acupunto yintang con xilacina 0,1 mg/kg + tramadol 2 mg/kg. Luego de 15 minutos los pacientes fueron valorados según la Escala de Otero para la evaluación de sedación y 15 minutos después se estimó la valoración post quirúrgica, según la escala multidimensional de la UNESP-Botucatu para valorar el dolor agudo post-operatorio. Los resultados obtenidos no arrojaron diferencias estadísticamente significativas (p>0,05) entre los niveles de neuroleptoanalgesia registrados en ambos grupos en estudio

Free energy of colloidal particles at the surface of sessile drops

The influence of finite system size on the free energy of a spherical particle floating at the surface of a sessile droplet is studied both analytically and numerically. In the special case that the contact angle at the substrate equals $\pi/2$ a capillary analogue of the method of images is applied in order to calculate small deformations of the droplet shape if an external force is applied to the particle. The type of boundary conditions for the droplet shape at the substrate determines the sign of the capillary monopole associated with the image particle. Therefore, the free energy of the particle, which is proportional to the interaction energy of the original particle with its image, can be of either sign, too. The analytic solutions, given by the Green's function of the capillary equation, are constructed such that the condition of the forces acting on the droplet being balanced and of the volume constraint are fulfilled. Besides the known phenomena of attraction of a particle to a free contact line and repulsion from a pinned one, we observe a local free energy minimum for the particle being located at the drop apex or at an intermediate angle, respectively. This peculiarity can be traced back to a non-monotonic behavior of the Green's function, which reflects the interplay between the deformations of the droplet shape and the volume constraint.Comment: 24 pages, 19 figure

Bisutería a base de fruta deshidratada elaborada artesanalmente

El presente trabajo analiza el mercado de la joyería artesanal en la Región de Tuxpan, Ver., con el fin de ofrecer una visión global y orientar a los emprendedores que se encuentran en el proceso de comercialización de bisutería artesanal obteniendo un conocimiento previo, intentando conseguir el éxito en sus proyectos. El sector de la bisutería en México ha experimentado profundos cambios con la llegada masiva de productos asiáticos al mercado, esto, debido a que estos son de muy bajo costo y lo que ha influido de manera radical en la producción local, impactando directamente en el volumen de la comercialización nacional y a las exportaciones, provocando caídas constantes en ambas cifras. Sin embargo, las importaciones crecen cada año desde 2002, México, tradicionalmente es joyero, donde los principales centros de producción están ubicados en Guadalajara y México, DF. La bisutería es una joyería artesanal y tradicional, que es consumida, no tan solo por mujeres, sin no también por hombres. La demanda de bisutería ha crecido y mantiene su tendencia de crecimiento, debido a que es un producto que permite seguir las tendencias de la moda de una manera más económica  y segura que la joyería. El motivo que impulsa a la compra de bisutería es más emocional que racional, y su asociación con las tendencias cambiantes de la moda hace que el ciclo del producto sea más corto

Bathyal megabenthic assemblages in the SE Iberian Peninsula (Western Mediterranean Sea)

The Iberian SE is an interesting transition and connectivity zone between the Alboran Sea and the Algerian-Balearic basin. It hosts important deep water fisheries targeting mostly red shrimp (Aristeus antennatus). The area comprises a complex system of tectonic canyons (Mazarron Escarpment), seamounts, knolls and hills (Palos, Planazo, Plis-Plas), and pockmark fields (Acosta et al., 2013). Few studies have been conducted on the bathyal megabenthos, unlike in the neighbouring Chella Bank (De la Torriente et al. 2018) and Balearic Islands (Massuti et al. 2022). The LIFE IP Intemares project is filling this gap