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In Mexico, in the 1940s, an American agronomist named Norman Borlaug developed a variety of wheat resistant to a fungus that infects wheat and corn crops, thus managing to double crop production and leading Mexico to become an exporting country of grains. Then, with the aim of reducing mass famine on a global scale, scientists improved the yields of a few crops (such as corn, wheat, rice, and potatoes) to efficiently provide food for the growing population. However, relying on so few crops left us highly vulnerable to attack by pests including unwanted herbs, insects, and fungi. Thus, it became increasingly clear that the only way to keep a huge field grown with only one species (such as corn) pest-free was by applying synthetic pesticides, such as DDT and glyphosate. This is their story. This article was previously published in El Gato y La Caja on March 12, 2019 (https://elgatoylacaja.com/glifosanto/).

Until the 1960s, the use of different substances to increase physical capacity was something accepted in the sports community. It was not even conceived as breaking the rules of fair play. In fact, it was not the records achieved by athletes that drew attention to doping, but the deaths caused by the consumption of such substances. Nowadays, in sports doping, we find many different types of substances: from stimulant agents as common as caffeine to new synthetic drugs including new anabolic steroids, chemical modifications of testosterone, and new amphetamine derivatives. The WADA agency oversees doping tests but does not publish the results to avoid further manipulation. However, this lack of transparency raises concerns about the sensitivity and specificity of such tests. In this article, Enrique Ortega Forte discusses the limitations of current doping regulations. This article was previously published in El Gato y La Caja on June 24, 2020 (https://elgatoylacaja.com/dame-alas/).

Browse online background check processes. Identify the behaviors that, in social networks, affect a selection process. Identify some personality characteristics that influence the violation of privacy on networks. Recruitment 2.0 is based on the online background search, assessing the applicant through their posts on their social networks, associating the findings with the qualities and aptitudes for the position. The research is framed under a documentary review, whose purpose is to describe the results of studies that have been conducted on online background checks.

Historically, music has been used to maintain or restore people’s health across different civilizations, characterised by different uses and beliefs. Different methodologies involving music have been applied in pathologies varying from psychiatric disorders, to physical pain. Singing, playing instruments, or even passively listening to specific melodies were recognized by many societies as key in the rehabilitation of different pathophysiological processes. The scientific method applied to study the impact of music on human health has led to a deeper understanding of the potential benefits of music therapy applied as part of the formal medical treatment in specific diseases. In the last 30 years, numerous studies focused on analysing the impact of specific musical interventions in conditions such as pain associated with cancer and surgery, refractory epilepsy, anxiety, and neurological post-stroke rehabilitation.

Surgery in patients with synchronous metastatic disease in colorectal cancer is a great therapeutic option to reduce mortality and increase survival, however, there is no international consensus for the surgical approach. The objective of this study was to evaluate and compare two types of surgical interventions (simultaneous and deferred/classical) in relation to the impact they have on survival. A systematic review.

To determine the relationship between the hospital and the surgeon volume with mortality and morbidity in pancreatic surgery, publications in which the subject of the study were patients undergoing pancreatic resections, were considered as inclusion criteria, the independent variables were the volume of the hospital and or the surgeon, the results were mortality and/or morbidity. Conference abstracts, case reports, studies in languages other than Spanish and English, from single center and studies in which they do not define a numerical value to determine the classification according to volume were excluded. A literature review was conducted from December 1, 2011 to December 1, 2021 on 4 search engines. A risk of bias assessment was performed with the ROBVIS tool, Microsoft Excel was used for the tabulation of the results, and IBM SPSS was used for statistical analyses.

Urinary incontinence (UI) is defined as the inability to voluntarily retain urine. With a high prevalence, up to 25% in those under 50 years of age, and a great impact on the affected person, to the point of modifying their lifestyle and social relationships. Stress urinary incontinence (SUI) is the most prevalent in women, which is why it is the study objective of this review. Since the evidence does not show great differences between the different surgical techniques, the objective of this review is to find all the available evidence that compares the two main surgical techniques in terms of efficacy in terms of quality of life.

This thesis addresses the unionism deployed by Section 22 of the National Union of Education Workers (SNTE) against the Education Reform promoted during the presidential term of Enrique Peña Nieto (2012-2018). The reform established a set of criteria determining hiring, contract renewal, and promotions for teachers within the education system. Section 22 of the SNTE, union that represented public education workers from Oaxaca State, questioned the modifications and raised a belligerent unionism against the education measures. The union carried out extensive strikes, used strong repertoires of collective action, proposed a form of organization based on assemblies and sought to articulate its action against the reform with other demands raised by different subaltern groups.

Cognitive control tasks allow the analysis of data provided by experimental processing mechanisms, in which one must respond under conditions of congruence-incongruence stimuli. The present critical review aims to analyze the main studies of the Simon Task cognitive control task, with special attention to the research method employed. The literature search was carried out using the PubMed and MedLine databases. Five studies conducted between 2000 and 2020 were selected. There is a remarkable growth in experimental research with the use of cognitive control tasks, especially classic tasks such as the Stroop, the Go/No Go and Eriksen's Flanker, which due to their wide description in the literature can help to strengthen discussions in researches that want to measure this variable.

Both overpopulation and extinction would be the (extreme) results of moving away from that equilibrium point in which the population reproduces enough to guarantee its 'replacement': it neither grows nor decreases, but keeps the number of individuals stable by replacing those who die with those who are born. In the past, there was high concern about overpopulation and the goal was greater birth control. However, at least in Europe, things have changed. To the concern of many, fertility rates in some countries are below 2 children per woman. In addition, the demographic explosion of the world human population had nothing to do with an increase in births, but rather with a higher life span. In this article, Sol Minoldo discusses real-life examples that highlight the underlying complexity of the attempts to keep this population replacement rate constant. Ilustradora: Malena Guerrero Fecha de publicación: 5/2/2019 Link a la nota original: https://elgatoylacaja.