Search results for "ants"
showing 10 items of 7011 documents
The effect of a temperature-sensitive prophage on the evolution of virulence in an opportunistic bacterial pathogen.
2022
https://doi.org/10.1111/mec.16638 Abstract Viruses are key actors of ecosystems and have major impacts on global biogeochemical cycles. Prophages deserve particular attention as they are ubiquitous in bacterial genomes and can enter a lytic cycle when triggered by environmental conditions. We explored how temperature affects the interactions between prophages and other biological levels by using an opportunistic pathogen, the bacterium Serratia marcescens, that harbours several prophages and that had undergone an evolution experiment under several temperature regimes. We found that the release of one of the prophages was temperature-sensitive and malleable to evolutionary changes. We furthe…
LYCOPENE AND PROSTATE CANCER: AN OVERVIEW
2018
Prostate cancer is one of the most common cancers in the world. Its pathogenesis is multifactorial and is linked to risk factors such as age, diet, cigarette smoking, family history and the onset of oxidative stress. In recent times, therefore, we are investigating the use of antioxidants as a primary and tertuary prevention of prostate cancer. Numerous studies in the literature focused on lycopene, a molecule belonging to the family of carotenoids that is commonly foud in tomatoes and products derived from it. The literature analyzed in the last two years shows how lycopene inhibits different mecchanism linked to carcinogenesis and tumor progression. However, there are still many points to…
Vulnerabilità ed effetti della violenza di prossimità
2022
The chapter summarizes some of the theoretical passages that characterize the unfolding of proximity violence. It highlights the consequences in migrant women and refugees seeking asylum. It highlights how the vulnerability of the less equipped subjects favors remaining in a circuit of ritual and normalized violence
Dementia in former amateur and professional contact sports participants : population-based cohort study, systematic review, and meta-analysis
2023
Background Although there is growing evidence that former professional athletes from sports characterised by repetitive head impact subsequently experience an elevated risk of dementia, the occurrence of this disorder in retired amateurs, who represent a larger population, is uncertain. The present meta-analysis integrates new results from individual-participant analyses of a cohort study of former amateur contact sports participants into a systematic review of existing studies of retired professionals and amateurs. Methods The cohort study comprised 2005 male retired amateur athletes who had competed internationally for Finland (1920–1965) and a general population comparison group of 1386 …
Pārtikas produktu un ēdienu porciju fotoattēlu atlanta papildināšana un iegūto fotoattēlu izvērtēšana
2018
"Pārtikas produktu un ēdienu fotoattēlu atlantu" izmanto dažādos pārtikas patēriņa pētījumos. Latvijā izmantotais atlants ir izdots 2007. gadā - bija nepieciešams to papildināt ar dažādiem pārtikas produktiem un ēdieniem. Papildinājuma izstrādes laikā bija nepieciešams izvēlēties pārtikas produktus un ēdienus, kurus pievienot. Kā arī, bija nepieciešams sagatavot to fotoattēlus un novadīt klātienes (validācijas) sesijas, kurās dalībnieki izvērtēja reālus porciju lielumus ar iegūtajiem fotoattēliem. Fotoattēlu iegūšanā, validācijā un datu apstrādi veica pārsvarā vadoties pēc diviem EFSA protokoliem - EFSA PANCAKE un EFSA PILOT-PANEU. Katras fotoattēlu sērijas rezultātus izvērtēja un, balstoti…
Qualité nutritionnelle et impact environnemental de l'alimentation des étudiants : mise en évidence de trois typologies de mangeurs
2022
Errores conceptuales en el estudio del equilibrio químico : nuevas aportaciones relacionadas con la incorrecta aplicación del principio de Le Chateli…
2021
Resumen basado en el de la publicación Resumen en inglés La utilidad limitada del principio de Le Chatelier y su formulación vaga y ambigua pueden ser algunas de las fuentes de conceptos erróneos en el equilibrio químico. Para diagnosticar conceptos erróneos, se administró una prueba escrita a 170 estudiantes universitarios de primer año. Las respuestas revelaron que los errores surgieron en términos generales: a) la mala aplicación y la incomprensión del Principio de Le Chatelier; b) utilización de recordatorios de memorización y procedimientos algorítmicos; c) control incorrecto de las variables involucradas y uso limitado de la ley de equilibrio químico; d) falta de dominio de los princi…
Definición y unidades de las constantes de equilibrio en los libros de texto de Química general preuniversitarios y universitarios
2021
En este trabajo, una vez definidas las constantes de equilibrio experimentales, Kp y Kc, así como la constante de equilibrio termodinámica, Kº, se analiza su incorrecto tratamiento por parte de libros de texto de química general. Se expone la forma en que libros de química general de universidad y de bachillerato manejan las unidades de las constantes de equilibrio. Muchos textos no expresan con unidades los valores de Kp y Kc calculados. Además, en la mayoría de los casos, Kº no se define, y como resultado existe una confusión muy extendida acerca de estos conceptos. Este problema terminológico ocasiona que en muchos libros se confunda Kp con Kº. Se propone que la definición correcta de la…
Phenolic Profiles, Antioxidant and Anti-Inflammatory Activities of Hydrodistillation Wastewaters from Five Lamiaceae Species
2022
Distillation is the most widely used method to obtain an essential oil from plant material. The biomass used in the process is returned as a solid residue together with variable amounts of water rich in water-soluble compounds, which currently are not addressed to any further application. The scope of this work was to evaluate the phytochemical composition of wastewaters coming from hydrodistillation (DWWs) of five aromatic plants belonging to the Lamiaceae family, and to assess their in vitro antioxidant and anti-inflammatory activities. The phenolic profiles of the DWWs were determined by HPLC-DAD and HPLC-ESI/MS. Free radical scavenging ability, oxygen radical antioxidant capacity and su…
Performance Dissimilarities in European Union Manufacturing: The Effect of Ownership and Technological Intensity
2021
Our paper addresses the relevance of a set of continuous and categorical variables that describe industry characteristics to differences in performance between foreign versus locally owned companies in industries with dissimilar levels of technological intensity. Including data on manufacturing sector performance from 20 European Union member countries and covering the 2009–2016 period, we used the random forests methodology to identify the best predictors of EU manufacturing industries’ a priori classification based on two main attributes: ownership (foreign versus local) and technological intensity. We found that EU foreign-owned businesses dominate locally owned ones in terms of size, wh…