Estudio del pensamiento funcional de estudiantes de educación primaria

El objetivo de esta investigación es identificar evidencias de pensamiento funcional en estudiantes de 3º curso de Primaria, en el marco de la propuesta de innovación curricular y línea de investigación conocida como Early-Algebra (Molina, 2009). Previo a la toma de datos se realizó un análisis de los antecedentes en el tema del álgebra en relación con el pensamiento funcional, concluyendo que este tipo de pensamiento incluye la relación entre cantidades que pueden expresarse en palabras, símbolos, tablas o gráficos, y el razonamiento con estas diversas representaciones para analizar el comportamiento de la función. El pensamiento funcional se trabaja, habitualmente, en etapas posteriores a la educación primaria, por lo que actualmente no existen suficientes estudios realizados sobre su introducción en cursos tempranos

First report of Alternaria infectoria on amaranth (Amaranthus caudatus ssp. mantegazzianus) in Argentina

Amaranth is an ancient crop originating in the Americas that can be used as a high-protein grain (12-17%) or as a leafy vegetable, and has potential as a forage crop (Putnam et al., 1989). Grain amaranth species have been important in different parts of the world and at different times for several thousand years (Meyers & Putnam, 1988). At the end of December 2009 the presence of discoloured panicles and seeds of amaranth (Amaranthus caudatus ssp. mantegazzianus) was recorded at the Instituto Fitotécnico of Santa Catalina, Llavallol locality, Buenos Aires Province, Argentina.Facultad de Ciencias Agrarias y Forestale

First report of Alternaria infectoria on amaranth (Amaranthus caudatus ssp. mantegazzianus) in Argentina

Amaranth is an ancient crop originating in the Americas that can be used as a high-protein grain (12-17%) or as a leafy vegetable, and has potential as a forage crop (Putnam et al., 1989). Grain amaranth species have been important in different parts of the world and at different times for several thousand years (Meyers & Putnam, 1988). At the end of December 2009 the presence of discoloured panicles and seeds of amaranth (Amaranthus caudatus ssp. mantegazzianus) was recorded at the Instituto Fitotécnico of Santa Catalina, Llavallol locality, Buenos Aires Province, Argentina.Facultad de Ciencias Agrarias y Forestale

Emergency care for women irregular migrants who arrive in Spain by small boat: a qualitative study

Background: this study aimed to describe and understand the experiences and health needs of women irregular migrants during emergency care provision upon arrival in Spain by small boat. Methods: a qualitative study based on Gadamer’s phenomenology was used. The data collection included 13 in-depth interviews with women irregular migrants and 10 in-depth interviews with key informants. The study took place in the Spanish Red Cross’ facilities between February 2017 and April 2018. Results: two main themes emerged from the data analysis: the need for emergency care focused on women irregular migrants with the sub-themes ‘Women irregular migrants as objects of sexual exploitation’ and ‘The mother-child dyad as the axis in human trafficking’; and developing an emergency care gender policy for women irregular migrants, with the subthemes ‘Healthcare in a police-controlled setting: detecting weaknesses’ and ‘Promoting screening and safety protocols focused on women irregular migrants’. Conclusions: women irregular migrants who arrive in Spain by small boat have specific needs and healthcare problems. Due to strict safety conditions during emergency care provision, rape and human trafficking can go unnoticed. Implications: interdisciplinary care protocols and new health policies that have a gender perspective are needed to improve the emergency care provided to women irregular migrants

First report of Alternaria infectoria on amaranth (Amaranthus caudatus ssp. mantegazzianus) in Argentina

Amaranth is an ancient crop originating in the Americas that can be used as a high-protein grain (12-17%) or as a leafy vegetable, and has potential as a forage crop (Putnam et al., 1989). Grain amaranth species have been important in different parts of the world and at different times for several thousand years (Meyers & Putnam, 1988). At the end of December 2009 the presence of discoloured panicles and seeds of amaranth (Amaranthus caudatus ssp. mantegazzianus) was recorded at the Instituto Fitotécnico of Santa Catalina, Llavallol locality, Buenos Aires Province, Argentina.Facultad de Ciencias Agrarias y Forestale

Co-circulation of SARS-CoV-2 Alpha and Gamma variants in Italy, February and March 2021

Background. Several SARS-CoV-2 variants of concern (VOC) have emerged through 2020 and 2021. There is need for tools to estimate the relative transmissibility of emerging variants of SARS-CoV-2 with respect to circulating strains.AimWe aimed to assess the prevalence of co-circulating VOC in Italy and estimate their relative transmissibility.Methods. We conducted two genomic surveillance surveys on 18 February and 18 March 2021 across the whole Italian territory covering 3,243 clinical samples and developed a mathematical model that describes the dynamics of co-circulating strains.Results. The Alpha variant was already dominant on 18 February in a majority of regions/autonomous provinces (national prevalence: 54%) and almost completely replaced historical lineages by 18 March (dominant across Italy, national prevalence: 86%). We found a substantial proportion of the Gamma variant on 18 February, almost exclusively in central Italy (prevalence: 19%), which remained similar on 18 March. Nationally, the mean relative transmissibility of Alpha ranged at 1.55-1.57 times the level of historical lineages (95% CrI: 1.45-1.66). The relative transmissibility of Gamma varied according to the assumed degree of cross-protection from infection with other lineages and ranged from 1.12 (95% CrI: 1.03-1.23) with complete immune evasion to 1.39 (95% CrI: 1.26-1.56) for complete cross-protection.Conclusion. We assessed the relative advantage of competing viral strains, using a mathematical model assuming different degrees of cross-protection. We found substantial co-circulation of Alpha and Gamma in Italy. Gamma was not able to outcompete Alpha, probably because of its lower transmissibility

Tumor markers in breast cancer - European Group on Tumor Markers recommendations

Recommendations are presented for the routine clinical use of serum and tissue-based markers in the diagnosis and management of patients with breast cancer. Their low sensitivity and specificity preclude the use of serum markers such as the MUC-1 mucin glycoproteins ( CA 15.3, BR 27.29) and carcinoembryonic antigen in the diagnosis of early breast cancer. However, serial measurement of these markers can result in the early detection of recurrent disease as well as indicate the efficacy of therapy. Of the tissue-based markers, measurement of estrogen and progesterone receptors is mandatory in the selection of patients for treatment with hormone therapy, while HER-2 is essential in selecting patients with advanced breast cancer for treatment with Herceptin ( trastuzumab). Urokinase plasminogen activator and plasminogen activator inhibitor 1 are recently validated prognostic markers for lymph node-negative breast cancer patients and thus may be of value in selecting node-negative patients that do not require adjuvant chemotherapy. Copyright (C) 2005 S. Karger AG, Basel