Macroinvertebrate Assemblages in Selected New Jersey Springs

The springs included as part of this study are lotic systems where groundwater discharges to the surface. Spring water quality is influenced by the discharge and geologic origins of a spring. Biological indicators, such as aquatic macroinvertebrates, are used to assess the health of spring ecosystems due to their sensitivity to pollution. Currently, there are no published studies on the aquatic macroinvertebrate assemblages in New Jersey springs. The objective of this study was to examine macroinvertebrate assemblages of New Jersey springs and to investigate the effects of geologic and hydrologic variables on macroinvertebrate community assemblages. We hypothesized that springs with greater discharge and carbonate springs exhibit good water quality and greater biodiversity. Macroinvertebrate assemblages of six springs in New Jersey were studied from August 2014 to March 2015. The spring sites varied by discharge (two sites had 3rd discharge magnitude, one had 5th and three had 6th) and bedrock geology (four springs discharge from carbonate aquifers and two from non-carbonate aquifers). Macroinvertebrate samples were collected with a Hess sampler once per season during summer and fall 2014 and spring 2015. A total of 1,497 macroinvertebrate individuals were collected, of which Chironomidae (Diptera) were the most abundant. Other dominant taxa included Optioservus spp. (Coleoptera), Gammarus fasciatus (Amphipoda) and Caecidotea spp. (Isopoda). The results indicate that higher discharge springs had higher macroinvertebrate diversities, higher presence of pollution sensitive species and good water quality when compared to low discharge springs. Functional feeding group results suggested connections between coarse particulate organic matter and high discharge velocity springs as well as fine particulate organic matter and low discharge velocity springs. Carbonate springs had higher pollution sensitive species than non-carbonate springs. This study found diverse macroinvertebrate communities in New Jersey springs and suggested that spring hydrology and geology affect macroinvertebrate assemblages. Routine monitoring is recommended for spring macroinvertebrate communities

Magnetism from intermetallics and perovskite oxides

This work has been presented by RJCV to obtain his PhD degree at Fluminense Federal University, in March of 2017. We focused on the synthesis of compounds and then on their magneto-strucutral characterization; mainly due to the interplay of these physical properties. We have prepared intermetallic alloys (including Heusler alloys) and perovskite oxides (manganites and cobaltites); in bulk and nanoparticles. A thorough analysis of the influence of the morphology and crystal structure on the magnetic properties of these compounds is addressed.Comment: This is a version of the Thesis presented by RJCV at Intituto de F\'isica at Universidade Federal Fluminense, Niter\'oi-RJ Brazil in march 2017, on supervision of Dr. Mario de Souza Reis Jr. ([email protected]

Detection of Anomalous Microwave Emission in the Pleiades Reflection Nebula with WMAP and the COSMOSOMAS Experiment

We present evidence for anomalous microwave emission (AME) in the Pleiades reflection nebula, using data from the seven-year release of the Wilkinson Microwave Anisotropy Probe (WMAP) and from the COSMOSOMAS experiment. The flux integrated in a 1-degree radius around R.A.=56.24^{\circ}, Dec.=23.78^{\circ} (J2000) is 2.15 +/- 0.12 Jy at 22.8 GHz, where AME is dominant. COSMOSOMAS data show no significant emission, but allow to set upper limits of 0.94 and 1.58 Jy (99.7% C.L.) respectively at 10.9 and 14.7 GHz, which are crucial to pin down the AME spectrum at these frequencies, and to discard any other emission mechanisms which could have an important contribution to the signal detected at 22.8 GHz. We estimate the expected level of free-free emission from an extinction-corrected H-alpha template, while the thermal dust emission is characterized from infrared DIRBE data and extrapolated to microwave frequencies. When we deduct the contribution from these two components at 22.8 GHz the residual flux, associated with AME, is 2.12 +/- 0.12 Jy (17.7-sigma). The spectral energy distribution from 10 to 60 GHz can be accurately fitted with a model of electric dipole emission from small spinning dust grains distributed in two separated phases of molecular and atomic gas, respectively. The dust emissivity, calculated by correlating the 22.8 GHz data with 100-micron data, is found to be 4.36+/-0.17 muK/MJy/sr, a value that is rather low compared with typical values in dust clouds. The physical properties of the Pleiades nebula indicate that this is indeed a much less opaque object than others were AME has usually been detected. This fact, together with the broad knowledge of the stellar content of this region, provides an excellent testbed for AME characterization in physical conditions different from those generally explored up to now.Comment: Accepted for publication in ApJ. 12 pages, 8 figure

The three dimensional globally modified Navier-Stokes equations: Recent developments

The globally modified Navier-Stokes equations (GMNSE) were introduced by Caraballo, Kloeden & Real in 2006 and have been investigated in a number of papers since then, both for their own sake and as a means of obtaining results about the 3-dimensionalNavier-Stokes equations. These results were reviewed by Kloeden et al, which was published in 2009, but there have been some important developments since then, which will be reviewed here

On the stability of impulsive functional differential equations with infinite delays

In this paper, the stability problem of impulsive functional differential equations with infinite delays is considered. By using Lyapunov functions and the Razumikhin technique, some new theorems on the uniform stability and uniform asymptotic stability are obtained. The obtained results are milder and more general than several recent works. Two examples are given to demonstrate the advantages of the results

Burnout Syndrome in Priests from a Diocese in Argentina

El estudio tuvo como objetivo describir la presencia de Síndrome de Burnout en sacerdotes de una diócesis de Argentina. El Burnout es un problema que forma parte del ámbito de la salud y de la calidad de vida laboral. Se utilizaron tres instrumentos: el Maslach Burnout Inventory (MBI), un cuestionario sociodemográfico y entrevista en profundidad a dos grupos focales. En general, observamos en los sacerdotes que en la dimensión agotamiento emocional, el 19% se encuentra en un nivel bajo, el 57,1% en el nivel medio, y un 23,8% en el nivel alto. En la dimensión despersonalización, el 19% se halla en un nivel bajo, el 61, 9% en el nivel medio y el 19% alto. Por último, en realización personal, un 23,8% puntuó en el nivel bajo, un 47,6% en el nivel medio y un 28.6% en el nivel alto.The purpose of this study is to describe the presence of the Burnout syndrome in priests from the diocese in Argentina. The Burnout syndrome affects health and working life quality. Three main instruments were applied in this study: The Meslach Burnout Inventory (MBI), a socio-demographic questionnaire, and an in-depth interview to two focus groups. In general terms, it could be observed that in the emotional exhaustion dimension, the 19% of priests are in a low level, the 57,1% in a medium level and the 23% in a high level. In the depersonalization dimension, the 19% is in a low level, the 61% in a medium level and a 19%in a high level. Finally, regarding personal fulfillment, a 23,8% marked a low level, a 47,6% a medium level and 28,6% a high level.Sección: Ensayos y Artículos científicosUniversidad Nacional de La Plat

Burnout Syndrome in Priests from a Diocese in Argentina

El estudio tuvo como objetivo describir la presencia de Síndrome de Burnout en sacerdotes de una diócesis de Argentina. El Burnout es un problema que forma parte del ámbito de la salud y de la calidad de vida laboral. Se utilizaron tres instrumentos: el Maslach Burnout Inventory (MBI), un cuestionario sociodemográfico y entrevista en profundidad a dos grupos focales. En general, observamos en los sacerdotes que en la dimensión agotamiento emocional, el 19% se encuentra en un nivel bajo, el 57,1% en el nivel medio, y un 23,8% en el nivel alto. En la dimensión despersonalización, el 19% se halla en un nivel bajo, el 61, 9% en el nivel medio y el 19% alto. Por último, en realización personal, un 23,8% puntuó en el nivel bajo, un 47,6% en el nivel medio y un 28.6% en el nivel alto.The purpose of this study is to describe the presence of the Burnout syndrome in priests from the diocese in Argentina. The Burnout syndrome affects health and working life quality. Three main instruments were applied in this study: The Meslach Burnout Inventory (MBI), a socio-demographic questionnaire, and an in-depth interview to two focus groups. In general terms, it could be observed that in the emotional exhaustion dimension, the 19% of priests are in a low level, the 57,1% in a medium level and the 23% in a high level. In the depersonalization dimension, the 19% is in a low level, the 61% in a medium level and a 19%in a high level. Finally, regarding personal fulfillment, a 23,8% marked a low level, a 47,6% a medium level and 28,6% a high level.Sección: Ensayos y Artículos científicosUniversidad Nacional de La Plat

Burnout Syndrome in Priests from a Diocese in Argentina

El estudio tuvo como objetivo describir la presencia de Síndrome de Burnout en sacerdotes de una diócesis de Argentina. El Burnout es un problema que forma parte del ámbito de la salud y de la calidad de vida laboral. Se utilizaron tres instrumentos: el Maslach Burnout Inventory (MBI), un cuestionario sociodemográfico y entrevista en profundidad a dos grupos focales. En general, observamos en los sacerdotes que en la dimensión agotamiento emocional, el 19% se encuentra en un nivel bajo, el 57,1% en el nivel medio, y un 23,8% en el nivel alto. En la dimensión despersonalización, el 19% se halla en un nivel bajo, el 61, 9% en el nivel medio y el 19% alto. Por último, en realización personal, un 23,8% puntuó en el nivel bajo, un 47,6% en el nivel medio y un 28.6% en el nivel alto.The purpose of this study is to describe the presence of the Burnout syndrome in priests from the diocese in Argentina. The Burnout syndrome affects health and working life quality. Three main instruments were applied in this study: The Meslach Burnout Inventory (MBI), a socio-demographic questionnaire, and an in-depth interview to two focus groups. In general terms, it could be observed that in the emotional exhaustion dimension, the 19% of priests are in a low level, the 57,1% in a medium level and the 23% in a high level. In the depersonalization dimension, the 19% is in a low level, the 61% in a medium level and a 19%in a high level. Finally, regarding personal fulfillment, a 23,8% marked a low level, a 47,6% a medium level and 28,6% a high level.Sección: Ensayos y Artículos científicosUniversidad Nacional de La Plat

Study of the chemostat model with non-monotonic growth under random disturbances on the removal rate

We revisit the chemostat model with Haldane growth function, here subject to bounded random disturbances on the input flow rate, as often met in biotechnological or waste-water industry. We prove existence and uniqueness of global positive solution of the random dynamics and existence of absorbing and attracting sets that are independent of the realizations of the noise. We study the longtime behavior of the random dynamics in terms of attracting sets, and provide first conditions under which biomass extinction cannot be avoided. We prove conditions for weak and strong persistence of the microbial species and provide lower bounds for the biomass concentration, as a relevant information for practitioners. The theoretical results are illustrated with numerical simulations