Estudio de la estacionalidad de la lluvia mensual en una región de la provincia de Buenos Aires

El objetivo de este trabajo es estudiar la variabilidad interanual y espacial del régimen anual de lluvia en una zona del noreste de la provincia de Buenos Aires. Se realiza un anAlisis de las series mensuales de precipitación correspondientes a 10 estaciones de la provincia de Buenos Aires, para el periodo 1907-1960. Se utiliza el análisis de Fourier como método de elasificación. En primera instancia se estudia la estructura anual media de la región, encontrándose que la varlanza explicada por el ciclo anual aumenta en la medida que la estación se aleja de la costa. Luego, se investiga sobre los posibles grupos o tipos de marchas anuales discriminados mediante la estructura de las distintas ondas, dadas a través del anAlisis armónico. Los resultados muestran que existen artos cuya variabilidad es explicada fundamental y alternativamente por las distintas ondas del espectro.This paper examines temporal and spatial annual variability of precipitation of ten locations in the province of Buenos Aires for the 60 year period 1907-1966. Spectral analysis of monthly series of rainfall is suggested as a method of regional classification of rainfall regimes. By mapping the variance associated with annual oscillation of mean monthly rainfall, it is shown that the rainfall climatology can be precisely described in a quantitative manner. Areas of highest concentrations of explained variance occur in the continental stations. The different cycles of annual march series are analyzed using the spectral analysis. There is a great variation of rainfall regimes.Asociación Argentina de Geofísicos y Geodesta

Functional correlates of response inhibition in impulse control disorders in Parkinson’s disease

Available online 11 September 2021.Impulse control disorder is a prevalent side-effect of Parkinson’s disease (PD) medication, with a strong negative impact on the quality of life of those affected. Although impulsivity has classically been associated with response inhibition deficits, previous evidence from PD patients with impulse control disorder (ICD) has not revealed behavioral dysfunction in response inhibition. In this study, 18 PD patients with ICD, 17 PD patients without this complication, and 15 healthy controls performed a version of the conditional Stop Signal Task during functional magnetic resonance imaging. Whole-brain contrasts, regions of interest, and functional connectivity analyses were conducted. Our aim was to investigate the neural underpinnings of two aspects of response inhibition: proactive inhibition, inhibition that has been prepared beforehand, and restrained inhibition, inhibition of an invalid inhibitory tendency. We observed that, in respect to the other two groups, PD patients with ICD exhibited hyperactivation of the stopping network bilaterally while performing proactive inhibition. When engaged in restrained inhibition, they showed hyperactivation of the left inferior frontal gyrus, an area linked to action monitoring. Restrained inhibition also resulted in changes to the functional co-activation between inhibitory regions and left inferior parietal cortex and right supramarginal gyrus. Our findings indicate that PD patients with ICD completed the inhibition task correctly, showing altered engagement of inhibitory and attentional areas. During proactive inhibition they showed bilateral hyperactivation of two inhibitory regions, while during restrained inhibition they showed additional involvement of attentional areas responsible for alerting and orienting.This work was supported by grants from the Carlos III Institute of Health (PI11/02109) and the ERA-Neuron program (PIM2010ERN- 0033). Additionally, the authors received the following grants and honoraria: T.E.-P. received a grant from the Spanish Ministry of Economy and Competitiveness (BES-2016-079489). P.M.P.-A. was supported by grants from the Spanish Ministry of Economy and Competitiveness (RYC-2014-15440), the Spanish Ministry of Science and Innovation (PGC2018-093408-B-I00), and the Fundación Tatiana Pérez de Guzmán el Bueno. I.N.-G. was the recipient of a Rio Hortega grant (CM16/00033) from the Carlos III Institute of Health. I.N.-G. received honoraria from Zambon and TEVA for travel and accommodation to attend scientific meetings. M.C.R.-O. received financial support for her research from national and local government institutions in Spain (Carlos III Institute of Health, Basque Country Government, Diputacion Foral Guipuzcoa, and CIBERNED). M.C.R.-O. received honoraria from Zambon, Bial, and Boston Scientific for lectures, travel, and accommodation to attend scientific meetings. BCBL acknowledges support from the Basque Government through the BERC 2018-2021 program

Functional correlates of response inhibition in impulse control disorders in Parkinson’s disease

Available online 11 September 2021.Impulse control disorder is a prevalent side-effect of Parkinson’s disease (PD) medication, with a strong negative impact on the quality of life of those affected. Although impulsivity has classically been associated with response inhibition deficits, previous evidence from PD patients with impulse control disorder (ICD) has not revealed behavioral dysfunction in response inhibition. In this study, 18 PD patients with ICD, 17 PD patients without this complication, and 15 healthy controls performed a version of the conditional Stop Signal Task during functional magnetic resonance imaging. Whole-brain contrasts, regions of interest, and functional connectivity analyses were conducted. Our aim was to investigate the neural underpinnings of two aspects of response inhibition: proactive inhibition, inhibition that has been prepared beforehand, and restrained inhibition, inhibition of an invalid inhibitory tendency. We observed that, in respect to the other two groups, PD patients with ICD exhibited hyperactivation of the stopping network bilaterally while performing proactive inhibition. When engaged in restrained inhibition, they showed hyperactivation of the left inferior frontal gyrus, an area linked to action monitoring. Restrained inhibition also resulted in changes to the functional co-activation between inhibitory regions and left inferior parietal cortex and right supramarginal gyrus. Our findings indicate that PD patients with ICD completed the inhibition task correctly, showing altered engagement of inhibitory and attentional areas. During proactive inhibition they showed bilateral hyperactivation of two inhibitory regions, while during restrained inhibition they showed additional involvement of attentional areas responsible for alerting and orienting.This work was supported by grants from the Carlos III Institute of Health (PI11/02109) and the ERA-Neuron program (PIM2010ERN- 0033). Additionally, the authors received the following grants and honoraria: T.E.-P. received a grant from the Spanish Ministry of Economy and Competitiveness (BES-2016-079489). P.M.P.-A. was supported by grants from the Spanish Ministry of Economy and Competitiveness (RYC-2014-15440), the Spanish Ministry of Science and Innovation (PGC2018-093408-B-I00), and the Fundación Tatiana Pérez de Guzmán el Bueno. I.N.-G. was the recipient of a Rio Hortega grant (CM16/00033) from the Carlos III Institute of Health. I.N.-G. received honoraria from Zambon and TEVA for travel and accommodation to attend scientific meetings. M.C.R.-O. received financial support for her research from national and local government institutions in Spain (Carlos III Institute of Health, Basque Country Government, Diputacion Foral Guipuzcoa, and CIBERNED). M.C.R.-O. received honoraria from Zambon, Bial, and Boston Scientific for lectures, travel, and accommodation to attend scientific meetings. BCBL acknowledges support from the Basque Government through the BERC 2018-2021 program

A Systematic Literature Review of Nursing Interventions for Postpartum Depression and their Outcomes

Purpose: This study was conducted to bring together studies on the common nursing interventions for postpartum depression (PPD) and their outcomes. It aims to provide interpretation of relevant findings to help further enhance the nursing care of patients with postpartum depression. Design and Methods: A systematic literature review (SLR) approach was utilized to synthesize studies related to the management of postpartum depression and its outcomes. One hundred five studies (105) were initially retrieved from three online databases. Eventually, fifteen studies were included in this review after the screening process on quality and risk of bias assessments. Codes were identified from the included studies and were clustered into themes. Athematic map was formulated to visualize the interconnections of the nursing interventions for postpartum depression and its outcomes. Findings: Nurses caring for patients with postpartum depression usually practice PPD education, perinatal assessment, PPD counseling, nurse-delivered psychotherapy, providing social support, drug administration, complementary and alternative therapy combined with conventional management, and patient referral. These nursing practices for postpartum depression yielded the following outcomes: (1) symptom alleviation, (2) empowerment, (3) positive feedback, and (4) negative outcomes. Conclusions and Recommendations: There is a range of nursing interventions for postpartum depression. This review highlights the significant roles of PPD education and nursing assessment and emphasizes these interventions to be practiced not only after childbirth but also during the prenatal period to identify at-risk patients and provide early intervention. This review also emphasizes the need for more coordinated care and a multidisciplinary approach, including patient referral, to achieve better outcomes in the care of postpartum depression patients. This relates to the acknowledgment of the various factors contributing to the development of postpartum depression and its lack of clear etiology

A note on supersymmetric Yang-Mills thermodynamics

The thermodynamics of supersymmetric Yang-Mills theories is studied by computing the two-loop correction to the canonical free energy and to the equation of state for theories with 16, 8 and 4 supercharges in any dimension $4\leq d\leq 10$, and in two dimensions at finite volume. In the four-dimensional case we also evaluate the first non-analytic contribution in the 't Hooft coupling to the free energy, arising from the resummation of ring diagrams. To conclude, we discuss some applications to the study of the Hagedorn transition in string theory in the context of Matrix strings and speculate on the possible physical meaning of the transition.Comment: 19 pages, harvmac, epsf. 1 figure included. Minor changes: typos corrected; references, a footonote and a note adde

Revealing the last 13,500 years of environmental history from the multiproxy record of a mountain lake (Lago Enol, northern Iberian Peninsula)

This is the author's accepted manuscript. The final publication is available at Springer via http://dx.doi.org/10.1007/s10933-009-9387-7.We present the Holocene sequence from Lago Enol (43°16′N, 4°59′W, 1,070 m a.s.l.), Cantabrian Mountains, northern Spain. A multiproxy analysis provided comprehensive information about regional humidity and temperature changes. The analysis included sedimentological descriptions, physical properties, organic carbon and carbonate content, mineralogy and geochemical composition together with biological proxies including diatom and ostracod assemblages. A detailed pollen study enabled reconstruction of variations in vegetation cover, which were interpreted in the context of climate changes and human impact. Four distinct stages were recognized for the last 13,500 years: (1) a cold and dry episode that includes the Younger Dryas event (13,500–11,600 cal. year BP); (2) a humid and warmer period characterizing the onset of the Holocene (11,600–8,700 cal. year BP); (3) a tendency toward a drier climate during the middle Holocene (8,700–4,650 cal. year BP); and (4) a return to humid conditions following landscape modification by human activity (pastoral activities, deforestation) in the late Holocene (4,650–2,200 cal. year BP). Superimposed on relatively stable landscape conditions (e.g. maintenance of well established forests), the typical environmental variability of the southern European region is observed at this site.The Spanish Inter-Ministry Commission of Science and Technology (CICYT), the Spanish National Parks agency, the European Commission, the Spanish Ministry of Science, and the European Social Fund

Revealing the last 13,500 years of environmental history from the multiproxy record of a mountain lake (Lago Enol, northern Iberian Peninsula)

This is the author's accepted manuscript. The final publication is available at Springer via http://dx.doi.org/10.1007/s10933-009-9387-7.We present the Holocene sequence from Lago Enol (43°16′N, 4°59′W, 1,070 m a.s.l.), Cantabrian Mountains, northern Spain. A multiproxy analysis provided comprehensive information about regional humidity and temperature changes. The analysis included sedimentological descriptions, physical properties, organic carbon and carbonate content, mineralogy and geochemical composition together with biological proxies including diatom and ostracod assemblages. A detailed pollen study enabled reconstruction of variations in vegetation cover, which were interpreted in the context of climate changes and human impact. Four distinct stages were recognized for the last 13,500 years: (1) a cold and dry episode that includes the Younger Dryas event (13,500–11,600 cal. year BP); (2) a humid and warmer period characterizing the onset of the Holocene (11,600–8,700 cal. year BP); (3) a tendency toward a drier climate during the middle Holocene (8,700–4,650 cal. year BP); and (4) a return to humid conditions following landscape modification by human activity (pastoral activities, deforestation) in the late Holocene (4,650–2,200 cal. year BP). Superimposed on relatively stable landscape conditions (e.g. maintenance of well established forests), the typical environmental variability of the southern European region is observed at this site.The Spanish Inter-Ministry Commission of Science and Technology (CICYT), the Spanish National Parks agency, the European Commission, the Spanish Ministry of Science, and the European Social Fund

Efecto del manejo silvícola en la dinámica de la regeneración de Nothofagus alpina, N. obliqua y N. dombeyi bajo diferentes condiciones ambientales

La regeneración de los bosques es la base de la renovación y la continuidad de las especies, lo que la convierte en uno de los procesos más importantes en el ciclo de vida de los árboles (Norden 2014). En la dinámica natural, los patrones de regeneración resultan de interacciones entre-especies, moduladas por gradientes ambientales, y el régimen de perturbaciones (Gholami et al. 2018). En bosques mixtos bajo manejo silvícola, la formación de claros produce cambios en los recursos y reguladores ambientales influyendo en la regeneración de las especies y en la estructura del ecosistema forestal (Dezzotti et al. 2003, Sola et al. 2015).EEA BarilocheFil: Mateo, C. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Mateo, C. Universidad Nacional del Comahue. Asentamiento Universitario de San Martín de los Andes; ArgentinaFil: El Mujtar, Veronica Andrea. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche. Unidad de Genética Ecológica y Mejoramiento Forestal; ArgentinaFil: El Mujtar, Veronica Andrea. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Dezzotti, Alejandro. Universidad Nacional del Comahue. Asentamiento Universitario San Martín de los Andes; Argentina.Fil: Marchelli, Paula. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche. Unidad de Genética Ecológica y Mejoramiento Forestal; ArgentinaFil: Marchelli, Paula. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: González Peñalba, Marcelo. Administración de Parques Nacionales. Parque Nacional Lanín. Departamento de Conservación y Manejo; Argentina.Fil: Lara, M. Administración de Parques Nacionales. Parque Nacional Lanín. Departamento de Conservación y Manejo; Argentina.Fil: Sbrancia, R. Universidad Nacional del Comahue. Asentamiento Universitario San Martín de los Andes; Argentina.Fil: Attis Beltrán, Hernán. Universidad Nacional del Comahue. Asentamiento Universitario San Martín de los Andes; Argentina.Fil: Sola, J. Universidad Nacional de Lomas de Zamora; ArgentinaFil: Sola, Georgina. Universidad Nacional del Comahue. Asentamiento Universitario San Martín de los Andes; Argentina

Limitations of Water Resources Infrastructure for Reducing Community Vulnerabilities to Extremes and Uncertainty of Flood and Drought

Debate and deliberation surrounding climate change has shifted from mitigation toward adaptation, with much of the adaptation focus centered on adaptive practices, and infrastructure development. However, there is little research assessing expected impacts, potential benefits, and design challenges that exist for reducing vulnerability to expected climate impacts. The uncertainty of design requirements and associated government policies, and social structures that reflect observed and projected changes in the intensity, duration, and frequency of water-related climate events leaves communities vulnerable to the negative impacts of potential flood and drought. The results of international research into how agricultural infrastructure features in current and planned adaptive capacity of rural communities in Argentina, Canada, and Colombia indicate that extreme hydroclimatic events, as well as climate variability and unpredictability are important for understanding and responding to community vulnerability. The research outcomes clearly identify the need to deliberately plan, coordinate, and implement infrastructures that support community resiliency.Fil: McMartin, Dena W.. University of Regina; CanadáFil: Hernani Merino, Bruno H.. University of Regina; CanadáFil: Bonsal, Barrie. Environment Canada; CanadáFil: Hurlbert, Margot. University of Regina; CanadáFil: Villalba, Ricardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Regional de Investigaciones Cientifícas y Tecnológicas; ArgentinaFil: Ocampo, Olga L.. Universidad Autónoma de Manizales; ColombiaFil: Upegui, Jorge Julián Vélez. Universidad Nacional de Colombia; ColombiaFil: Poveda, Germán. Universidad Nacional de Colombia; ColombiaFil: Sauchyn, David J.. University of Regina; Canad