Search results for "DF"
showing 10 items of 1699 documents
Reduction and variability of trunk spines in the acanthocephalan Corynosoma cetaceum: the role of physical constraints on attachment
2005
. In this study, we investigated a functional trade-off between trunk attachment and trunk-spine development in the acanthocephalan Corynosoma cetaceum. The worms live attached to the stomach and upper intestine of their cetacean definitive hosts, using the proboscis and spiny foretrunk as the main holdfast; the spiny hindtrunk can also attach by bending ventrally. When the hindtrunk bends, ventral compression generates an anterior fold (AF) and a posterior fold (PF). A morphological analysis based on 7,823 individuals collected from 10 franciscana dolphins, Pontoporia blainvillei, revealed that spines were smaller and more variable in size and occurrence in the folds than on neighboring ar…
Kinematics and kinetics analysis of midfoot joints of 30 normal subjects during walking
2016
Abstract Introduction There is not enough evidence in form of clinical studies regarding the behavior of the midfoot joints in dynamic situations such us walking or running. The present work aims to study the mechanical behavior of midfoot joints with a multisegmented foot model with special interest in joint moments and their clinical significance. Subjects and methods A computerized 3-dimensional gait study was performed on healthy male adult subjects with a neutral Foot Posture Index (FPI) (from 0 to +5) during walking. Joint angle and external moments were estimated with a multisegment foot model that considers three separate segments (forefoot, rearfoot and hallux) and graphs and value…
La circulation des termes dans le discours médiatique : peut-on informer sans déformer ?
2016
Media diversification and information superhighways that have become faster and faster have boosted the circulation of economic terms in the popular press, along with the interaction between editorial contents targeted at the general population, which are similar in nature. This twin phenomenon of circulation and interaction was highlighted in a contrastive study of the way the German and the French press managed the euro crisis between 2011 and 2013: articles devoted to the debt of countries that are going through hard economic times require expert knowledge, but also resort to popularization strategies that show multi-level interdiscursivity.
The Impact of Single-Level ACDF on Neural Foramen and Disc Height of Surgical and Adjacent Cervical Segments: A Case-Series Radiological Analysis
2023
Background: ACDF has become one of the established procedures for the surgical treatment of symptomatic cervical spondylosis, showing excellent clinical results and effective improvements in neural functions and neck pain relief. The main purpose of ACDF is neural decompression, and it is considered by some authors as an indirect result of the intervertebral distraction and cage insertion and the consequent restoration of the disc space and foramen height. Methods: Radiological data from 28 patients who underwent single-level ACDF were retrospectively collected and evaluated. For neural foramen evaluation, antero-posterior (A-P) and cranio-caudal (C-C) diameters were manually calculated; fo…
Noble Gases as Magnetic Probes in Fullerene Chemistry
2016
Since the early 1990s of the previous century, the use of magnetic active noble gas atom to indirectly probe the size and symmetry of fullerene cage has been reviewed. Molecular modeling of nuclear shielding (and chemical shift) using gauge-including atomic orbital (GIAO) approach at several levels of theory, including Hartree–Fock (HF), density functional theory (DFT), and coupled cluster (CC), is discussed. The advantage of using GIAO calculation to predict and closely reproduce experimental 3He and 129Xe NMR spectra is shown.
Carbohydrates consumption pre exercise attenuate bone resorption marker in young female gymnasts
2019
Purpose: Bone mineral density (BMD) is modified by environmental factors like diet, nutritional status and exercise. Athletes have higher bone turnover than sedentary individuals but prolonged exercise might result in a negative remodeling balance and compromise skeletal health. Strenuous exercise and fasting may induce osteoclastic activity that is not necessarily accompanied by a compensatory increase in osteoblastic activity. The purpose of this study was to understand if there is specific nutrition to allow best performance and reduce bone resorption that occurs after exercise in athletes. Methods: A group of 28 gymnasts aged between 9 and 14 years old (13 ± 1.71) playing artistic gymna…
Interrelationship Between Age, Gender, and Weight Status on Motor Coordination in Italian Children and Early Adolescents Aged 6–13 Years Old
2021
Although numerous evidences reported a negative correlation between motor coordination (MC) and overweight/obesity in children and adolescents, the interrelationship between age, gender, and weight status is still debatable. Hence, the aim of this cross-sectional study was to examine the association between MC and weight status according to age and gender across childhood and early adolescence in a large sample of Italian elementary and middle school students. A number of 1961 Italian school students (1,026 boys, 935 girls) was stratified in three consecutive age groups (6–7, 8–10, and 11–13 years) and four weight status categories (underweight, normal weight, overweight, and obese) accordi…
Individual mindfulness and objective performance. An experimental approach
2023
El interés por el mindfulness se debe a que parece tener un impacto positivo en el funcionamiento del ser humano (Brown et al., 2007). Así, diferentes estudios sugieren que el mindfulness es una herramienta para tratar diferentes trastornos psicológicos y físicos (Baer, 2003; Chiesa y Malinowski, 2011). En esta dirección, un creciente número de trabajos también sugieren que estos efectos positivos mencionados pueden extenderse al entorno organizacional (Hyland et al., 2015; Reb & Choi, 2014; Sutcliffe et al., 2016). Sin embargo, son escasos los estudios que se han centrado en analizar la relación entre mindfulness y el rendimiento individual (Dane, 2011). Esto puede explicarse por el hecho …
Olika profiler för exekutiva färdigheter bland elever i behov av stöd
2022
Svårigheter med exekutiva färdigheter är relativt vanliga i skolan och påverkar elevers arbetssätt och inlärning negativt. Kunskap om individuella uttryck av exekutiva svårigheter och beteende i skolan ger en bättre utgångspunkt för att planera och genomföra riktade och effektiva stödåtgärder. I den här studien fokuserar vi på hurdana olika profiler det finns gällande de exekutiva svårigheterna bland elever som erbjuds specialpedagogiskt stöd för koncentrationssvårigheter, samt hur dessa är relaterade till beteendeproblem, positivt socialt beteende och akademiska grundfärdigheter. I den här studien deltog 183 elever från två kohorter (medelålder = 9,57 år; modersmål svenska = 62,8 %, finska…
Stability, electronic structure, and optical properties of protected gold-doped silver Ag29−xAux (x = 0–5) nanoclusters
2017
In this work, we used density functional theory (DFT) and linear response time-dependent DFT (LR-TDDFT) to investigate the stability, electronic structure, and optical properties of Au-doped [Ag29-xAux(BDT)12(TPP)4]3- nanoclusters (BDT: 1,3-benzenedithiol; TPP triphenylphosphine) with x = 0-5. The aim of this work is to shed light on the most favorable doped structures by comparing our results with previously published experimental data. The calculated relative energies, ranging between 0.8 and 10 meV per atom, indicate that several doped Ag29-xAux nanoclusters are likely to co-exist at room temperature. However, only the Au-doped [Ag29-xAux(BDT)12(TPP)4]3- nanoclusters that have direct bon…