Origin of X-shaped radio-sources: further insights from the properties of their host galaxies

We analyze the properties of a sample of X-shaped radio-sources (XRSs). These objects show, in addition to the main lobes, a pair of wings producing their peculiar radio morphology. We obtain our sample by selecting from the initial list of Cheung (2007, AJ, 133, 2097) the 53 galaxies with the better defined wings and with available SDSS images. We identified the host galaxies and measured their optical position angle, obtaining a positive result in 22 cases. The orientation of the secondary radio structures shows a strong connection with the optical axis, with all (but one) wing forming a angle larger than 40 degrees with the host major axis. The probability that this is compatible with a uniform distribution is P = 0.9 10E-4. Spectra are available from the SDSS for 28 XRSs. We modeled them to extract information on their emission lines and stellar population properties. The sample is formed by approximately the same number of high and low excitation galaxies (HEG and LEG); this classification is essential for a proper comparison with non-winged radio-galaxies. XRSs follow the same relations between radio and line luminosity defined by radio-galaxies in the 3C sample. While in HEGs a young stellar population is often present, this is not detected in the 13 LEGs, again in agreement with the properties of non XRSs. The lack of young stars in LEGs support the idea that they did not experiences a recent gas rich merger. The connection between the optical axis and the wings orientation, as well as the stellar population and emission lines properties, provide further support for an hydro-dynamic origin of the radio-wings (for example associated with the expansion of the radio cocoon in an asymmetric external medium) rather than with a change of orientation of the jet axis.Comment: Accepted for publication in A&

Collection, storage and freezability of equine epididymal spermatozoa

The recovery of spermatozoa from the cauda epididymis may be the last chance to obtain genetic material from stallions undergone to castration. The aim of the current study was to evaluate the efficiency of cryopreservation and the use of two different extenders for equine epididymal spermatozoa. Testicles obtained from castration were divided into two groups: cauda epididymis processed immediately after orchiectomy and cauda epididymis processed after 24 h storage in saline solution at 4 °C of the testis. The epididymal spermatozoa were collected through manual slicing of the cauda epididymis of each testicle. In addition, spermatozoa obtained from different processed testes were diluted alternatively with either modified Palmer or EGG TECH® extenders to produce frozen straws. Motility parameters in fresh and frozen-thawed material were analysed by means of the computer-aided sperm analysis (CASA). The recorded CASA data were analysed with a mixed linear model. Motility parameters in fresh semen yielded better results than in frozen semen (p = 0.008), but no difference (p > 0.05) was observed between spermatozoa collected immediately after castration or after 24 h of storage; in frozen-thawed samples, EGG TECH® tended to improve the percentage of progressively motile spermatozoa in epididymal frozen-thawed semen (p = 0.08) compared with modified Palmer. We conclude that the processing of epididymal spermatozoa can occur up to 24 h after stallion castration and both common extenders used are suitable for preserving this material

Role of coenzyme Q and vitamin E on stallion semen motility evaluated both in frozen and cooled-stored semen

Several studies reveal that coenzyme Q (CoQ) and vitamin E (Vit. E) act against oxidative deterioration, and that CoQ restores the active and antioxidant form of Vit. E. These two antioxidants, acting against lipid peroxidation, seem to be able to improve motility parameters of spermatozoa. The objective of this study is to evaluate the addition of CoQ and Vit. E to semen extender for equine spermatozoa in order to evaluate possible effects on semen motility. First, immediately after collection, semen samples were diluted with 1mM of CoQ and 1mM of CoQ plus 1mM of Vit. E and prepared for frozen storage in liquid nitrogen. After thawing (37 °C/30 s), samples were maintained at 37 °C and subjected to analysis after 0, 2 and 4 h for motility parameters with CASA (Computer-Assisted Sperm Analysis) method. In a second experiment, after the collection, semen samples were diluted with 1mM of CoQ, in presence or absence of seminal plasma where Vit. E is normally present, and prepared for cooled storage at 4 °C. The effects on motility parameters were determined with CASA at 0, 24, 31 and 48 h after collection. During the analysis, samples were kept at 4 °C. The CASA variables were examined with a mixed linear model. No improvement (p > .05) in motility parameters results from the addition of CoQ and Vit. E in frozen or cooled-stored equine semen when compared to control group

Identidad y tipografía

Las sociedades de cada país poseen folklore que pone de manifiesto la idiosincrasia del pueblo y por consiguiente su historia. En ese sentido la creación de fuentes tipográficas orientadas a la identidad cultural en este caso con la región norte de nuestro país, supone, desde el punto de vista de diseño, nuevas oportunidades en el mercado de tipografía latinoamericana y, a su vez significa un aporte histórico-cultural importante y un compromiso para con la región y el país. Para entender lo que significa nación o país, es necesario conocer lo más cercano que tenemos; eso implica hablar de la región norte de Perú. En esta región nos vemos rodeados de un pasado cultural del cual solo conocemos por historia. No solo un escudo y un himno son los símbolos de identidad creados para representar una nación, dejando de lado lo que significaron siglos de evolución cultural que las sociedades de ese entonces nos transmitieron sabiamente, y que es todo lo que en la actualidad conocemos como patrimonio dentro de un museo. La región norte, donde se concentraron culturas que dieron increíbles aportes a nuestro país debería poseer no solo una bandera, un escudo y un himno;por el contrario debería poseer una fuente tipográfica que exprese y le de valor a tantos años de desarrollo cultural vividos por nuestros antepasados, y que por ahora,si hablamos netamente de diseño tipográfico nos lo expresa la marca Perú

Quantification of Botrytis cinerea in Grapevine Bunch Trash by Real-Time PCR

Quantification of colonization of grape bunch trash by Botrytis cinerea is crucial for Botrytis bunch rot (BBR) control. A previously developed quantitative polymerase chain reaction (qPCR) method was adapted to quantify B. cinerea DNA in grape bunch trash, and a colonization coefficient (CC) was calculated as the ratio between the DNA concentrations of B. cinerea and of Vitis vinifera. CC values increased linearly with the number of conidia of B. cinerea or the quantity of mycelium of B. cinerea added to the bunch trash increased. CC values also increased linearly in bunch trash samples containing increasing percentages of B. cinerea-colonized bunch trash; in the latter samples, CC values were correlated with subsequent assessments of B. cinerea colonization of trash (as determined by plating on agar) and sporulation on the trash (as determined by spore counts after incubation in humid chambers). The qPCR assay was also validated using trash collected from bunches treated or not treated with fungicides in three vineyards in two seasons. CC values reflected the reduction in sporulation and in latent infections of mature berries caused by fungicide application. The qPCR assay enables rapid, specific, sensitive, and reliable quantification of the degree of colonization of bunch trash by B. cinerea, which makes it a useful tool for studies of the epidemiology and management of BBR

Análisis de la iconografía presente en el bordado monsefuano, Chiclayo, 2020

La artesanía es una de las actividades principales que generan ingresos a muchas personas como bordadoras del distrito de Monsefú en Perú. Al evaluar el trabajo realizado por los bordadores artesanales se evidenció poca innovación en cuanto a diseño que genera la devaluación o desvalorización de dicha artesanía tanto a nivel local y tradicional; La presente investigación abordó un análisis de los motivos iconográficos presentes en el bordado monsefuano. Tuvo como objetivo general determinar de qué manera el análisis de la iconografía presente, permite crear nuevos patrones para el bordado monsefuano. Para ello era necesario trazarse los siguientes objetivos específicos: identificar elementos iconográficos presentes en el bordado monsefuano, analizarlos y finalmente desarrollar un manual de patrones para bordado monsefuano donde se visualice el criterio de innovación. La investigación posee un enfoque del tipo cualitativa, diseño etnográfico; ya que se observaron los procesos tal cual se desarrollaron y se pudo participar en la actividad propia de loa artesanos sujetos de la investigación; haciéndose uso de técnicas como la observación participante y entrevista, al cual como resultados se identificaron elementos propios de la región en el diseño del bordado tales como flores, pavos reales, pareja de marinera, claveles. Arrojando que se visualizan los mismos patrones tanto en piezas utilitarias como en las de vestir, con el mínimo de variación. Esto llevó a reutilizar las mismas formas para diseñar nuevos patrones para el bordado monsefuano; además la experiencia con los artesanos, permitió conocer sus necesidades y adaptarlas a las tendencias actuales de mercado.TesisComunicación y desarrollo human

Identificación y caracterización de especies de Botryosphaeriaceae asociadas a muerte regresiva de manzanos

48 p.Chile se encuentra dentro de los principales países exportadores de manzanas (Malus x domestica) en el hemisferio sur, con una superficie de 32.370 hectáreas aproximadamente. La Región del Maule es donde se encuentra la mayor concentración de superficie plantada con 19.636 hectáreas. Sin embargo, la producción de este frutal se ve afectada por problemas de enfermedades de tipo fungoso. Previamente, en Chile solo se ha identificado a Botryosphaeria dothidea causando muerte regresiva en manzanos, estudio de la década de los 80. En este sentido, recientemente se reportó la presencia de Diplodia seriata causando muerte regresiva en la Región del Maule. Por lo tanto, el objetivo de este trabajo fue identificar y caracterizar especies de la familia Botryosphaeriaceae a través de una caracterización cultural, morfológica y molecular utilizando doce aislados obtenidos desde brazos con muerte regresiva de diferentes zonas de Chile. Además, se determinó la patogenicidad en ramillas cv. Cripps Pink, Fuji, Gala y Granny Smith y en frutos de manzana cv. Fuji, Pink Lady, Braeburn, Granny Smith, Premium Gala, Modi, Red Chief y Scarlett. Los resultados indican que a través de características culturales, morfológicas y moleculares se identificaron nueve aislados como Diplodia seriata, dos aislados a la especie Neofusicoccum arbuti y un solo aislado como Lasiodiplodia theobromae. Todos los aislados causaron lesiones necróticas en ramillas y pudrición en frutos. Finalmente, este trabajo identificó a D. seriata, L. theobromae y N. arbuti como especies de hongos causales de la muerte regresiva en manzanos en Chile./ABSTRACT: Chile is located within the main apple exporting countries (Malus x domestica) in the southern hemisphere, with an area of approximately 32,370 hectares. The Maule Region is where the highest concentration of planted area with 19,636 hectares. However, the production of this fruit is affected by fungal diseases. Previously, in Chile only Botryosphaeria dothidea has been identified causing dieback in apple trees, but the study was conducted during the 80s. In this sense, recently the presence of Diplodia seriata was reported causing apple dieback in the Region of Maule. Therefore, the objective of this work was to identify and characterize species belonging to the family Botryosphaeriaceae through a cultural, morphological and molecular characterization using twelve isolates obtained from arms dieback of different areas of apple production in Chile. In addition, pathogenicity was determined on twigs (2yrs-old) of cvs. Cripps Pink, Fuji, Gala and Granny Smith, and on apple fruits cv. Cripps Pink, Fuji, Braeburn, Granny Smith, Gala, Modi, Red Chief and Scarlett. The results indicate that through cultural, morphological and molecular characteristics nine isolates were identified as Diplodia seriata, two isolates as Neofusicoccum arbuti and one isolate as Lasiodiplodia theobromae. All isolates caused necrotic lesions in twigs and rot in fruits. Finally, this work identified to D. seriata, L. theobromae and N. arbuti as species of fungal belonging to Botryosphaeriaceae causing symptoms of dieback in apple trees in Chile

Calidad de vida en el adulto con síndrome POST COVID-19 en el Centro de Salud Año Nuevo, Comas 2021

El síndrome POST-COVID se manifiesta con síntomas subsistentes o nuevas manifestaciones patológicas crónicas; puede afectar de manera considerable a la población adulta con comorbilidades y ocasiona una reducción en la calidad vida. Objetivo: Determinar la de calidad de vida en el adulto con síndrome POST COVID- 19 en el Centro de Salud Año Nuevo, Comas 2021. Metodología: Investigación cuantitativa, diseño no experimental de corte transversal. Muestra de 75 adultos. Resultados: El mayor porcentaje de los pacientes del centro de salud Año NuevoComas con síndrome POST COVID-19 tienen una calidad de vida regular 84%, buena 13%, mala 3% y muy buena 0%. Conclusiones: La calidad de vida de los pacientes con síndrome POST COVID-19, en el centro de salud Año Nuevo-Comas es regular

Exploit biodiversity in viticultural systems to reduce pest damage and pesticide use, and increase ecosystems services provision: the BIOVINE Project

Organic vineyards still rely on large external inputs to control harmful organisms (i.e., pests). The BIOVINE project aims to develop natural solutions based on plant diversity to control pests and reduce pesticide dependence. The capability of plants of increasing the ecosystem resistance to pests and invasive species is a well-known ecosystem service. However, monocultures (including vineyards) do not exploit the potential of plant diversity. BIOVINE aims to develop new viticultural systems based on increased plant diversity within (e.g., cover crops) and/or around (e.g., hedges, vegetation spots, edgings) vineyards by planting selected plant species for the control of arthropods, soil-borne pests (oomycetes, fungi, nematodes), and foliar pathogens. Candidate plants will be identified by a literature review, and the selected ones will be tested in controlled environment or small-scale experiments. The ability of the selected plants to: i) attract or repel target arthropod pests; ii) conserve/promote beneficials; iii) control soil-borne pests by means of biofumigation; iv) carry mycorrhizal fungi to the vine root system to increase plant health (growth and resistance); and v) control foliar pathogens by reducing the inoculum spread from soil, will be investigated. New viticultural systems able to exploit plant diversity will then be designed based on results of BIOVINE activities, following a design-assessment-adjustment cycle, which will then be tested by in-vineyard experiments in France, Italy, Romania, Slovenia, Spain and Switzerland for a 2-year period. Innovative viticultural systems should represent an improved way for pest control in organic viticulture, meanwhile they should positively affect functional biodiversity and ecosystem services. New control strategies may provide financial opportunities to vine growers and lower their reliance on pesticides