Search results for "ToP"

Spectroscopy of short-lived radioactive molecules

2020

Molecular spectroscopy offers opportunities for the exploration of the fundamental laws of nature and the search for new particle physics beyond the standard model1–4. Radioactive molecules—in which one or more of the atoms possesses a radioactive nucleus—can contain heavy and deformed nuclei, offering high sensitivity for investigating parity- and time-reversal-violation effects5,6. Radium monofluoride, RaF, is of particular interest because it is predicted to have an electronic structure appropriate for laser cooling6, thus paving the way for its use in high-precision spectroscopic studies. Furthermore, the effects of symmetry-violating nuclear moments are strongly enhanced5,7–9 in molecu…

Injury History and Perceived Knee Function as Risk Factors for Knee Injury in Youth Team-Sports Athletes

2022

Background: The identification of risk factors for sports injuries is essential before injury prevention strategies can be planned. Hypothesis: Previous acute knee injury and lower perceived knee function measured by Knee injury and Osteoarthritis Outcome Score (KOOS) will increase the risk of acute knee injury in youth team-sports athletes. Study Design: Prospective cohort study. Level of Evidence: Level 3. Methods: At baseline, youth (≤21 years old) male and female basketball and floorball athletes completed a questionnaire on previous acute knee injuries and perceived knee function (KOOS). A total of 211 male and 183 female athletes were followed for an acute knee injury up to 3 years. U…

Uimahallipalveluiden tuottamismallit kuntaorganisaatioissa esimiesnäkökulmasta

2017

Työn tarkoituksena on selvittää uimahallipalveluiden tuottamismalleja kuntaorganisaatioissa. Tutkimuksen kohteena ovat uimahallien hallinto ja laitosteknisten palveluiden tuottamismallit. Laitosteknisillä palveluilla tarkoitetaan kiinteistön ja allastekniikan ylläpitoon liittyvää toimintaa. Tutkimus kohdistuu yhteen palvelutuotannon osaan, uimahallipalveluihin, jotka ovat keskeinen kunnallisten liikuntapalveluiden toiminto. Näin pystyttiin luomaan riittävän syvällinen katsaus yhteen osa-alueeseen, joka kuitenkin kertoo myös laajemmasta kokonaisuudesta. Tutkimusta varten haastateltiin Jyväskylän, Järvenpään, Keravan, Kouvolan, Turun, Tuusulan, Raision ja Urheiluhallit Oy:n (Helsinki) uimahal…

TP53 mutations and S-phase fraction but not DNA-ploidy are independent prognostic indicators in laryngeal squamous cell carcinoma

2005

To prospectively evaluate the prognostic significance of TP53, H-, K-, and N-Ras mutations, DNA-ploidy and S-phase fraction (SPF) in patients affected by locally advanced laryngeal squamous cell carcinoma (LSCC). Eight-one patients (median follow-up was 71 months) who underwent resective surgery for primary operable locally advanced LSCC were analyzed. Tumor DNA was screened for mutational analysis by PCR/SSCP and sequencing. DNA-ploidy and SPF were performed by flow cytometric analyses. Thirty-six patients (44%) had, at least, a mutation in the TP53 gene. Of them, 22% (8/36) had double mutations and 3% (1/36) had triple mutations. In total, 46 TP53 mutations were observed. The majority (41…

Fish introductions and light modulate food web fluxes in tropical streams : a whole-ecosystem experimental approach

2016

Decades of ecological study have demonstrated the importance of top-down and bottom-up controls on food webs, yet few studies within this context have quantified the magnitude of energy and material fluxes at the whole-ecosystem scale. We examined top-down and bottom-up effects on food web fluxes using a field experiment that manipulated the presence of a consumer, the Trinidadian guppy Poecilia reticulata, and the production of basal resources by thinning the riparian forest canopy to increase incident light. To gauge the effects of these reach-scale manipulations on food web fluxes, we used a nitrogen (15N) stable isotope tracer to compare basal resource treatments (thinned canopy vs. con…

Spatial variability in stable carbon and nitrogen isotope ratios in a Mediterranean coastal lagoon (Mauguio, France).

2003

First measurements of field metabolic rate in wild juvenile fishes show strong thermal sensitivity but variations between sympatric ecotypes

2021

The relationship between physiology and temperature has a large influence on population-level responses to climate change. In natural settings, direct thermal effects on metabolism may be exaggerated or offset by behavioural responses influencing individual energy balance. Drawing on a newly developed proxy, we provide the first estimates of the thermal performance curve of field metabolism in a wild fish. We investigate the thermal sensitivity of field metabolic rate in two sympatric, genetically distinct ecotypes of Atlantic cod from the Skagerrak coast of southern Norway. The combined ecotype median of field metabolic rate increased with increasing temperature until around 16°C, coincide…

Broglie and Young, visionaries who shed light in the polar topology that grounds our reality: a hypothesis

2020

Una observación matemática que relaciona los patrones fractales y la operación de convolución en el contexto del procesamiento de imágenes digitales interrumpió una investigación que nos lleva a plantear la hipótesis de que el concepto de onda de materia (o dualidad onda-partícula) se encuentra en la dicotomía entre el par débil y un topología fuerte en el ámbito del marco de atractores singulares continuos en ninguna parte diferenciables y el concepto de fotón-solitón de Vigier. Tal inferencia parece ser más evidente en la interpretación de Broglie-Bohm de la mecánica cuántica en el cruce de características locales x globales. De esto se deduce también que la relación de los fenómenos natu…

Global climate policies, local institutions and food security in a pastoral society in Ethiopia

2011

This paper explores climate change adaptation within national policy priorities in a least developed country (LDC). The premise of the article is that when considering food security, climate is an exogenous trigger, while the deeper causes lie in social problems. Therefore, adaptation is subordinate to poverty alleviation. The paper examines how these two goals, climate adaptation and poverty alleviation, can be combined. Recent studies have shown that the most effective way to adapt to changing climate conditions in a poor country is to rely on local institutions that have established and sustainable mechanisms to deal with extreme climatic conditions. This research analyzes the stakeholde…

Análisis de las prescripciones potencialmente inadecuadas según los criterios STOPP/START en los residentes de los centros sociosanitarios del depart…

2022

Introducción: Según la Organización mundial de la salud, el uso racional del medicamento se define como “aquel en el que el paciente recibe los fármacos apropiados para sus necesidades clínicas, en unas dosis ajustadas a su situación particular, durante un periodo adecuado y con el mínimo coste posible para él y para la comunidad”, cuando esta premisa no se cumple hablamos de prescripciones potencialmente inadecuadas. Las prescripciones inadecuadas pueden ser por indicación, cuando se prescribe un fármaco no indicado, o por omisión cuando no se prescribe a pesar de estar indicado para la prevención o tratamiento de una determinada enfermedad. Los pacientes que residen en centros sociosanita…