Search results for "FH"
showing 10 items of 171 documents
Orthogonal cutting simulation of OFHC copper using a new constitutive model considering the state of stress and the microstructure effects
2016
International audience; This work aims to develop an orthogonal cutting model for surface integrity prediction, which incorporates a new constitutive model of Oxygen Free High Conductivity (OFHC) copper. It accounts for the effects of the state of stress on the flow stress evolution up to fracture. Moreover, since surface integrity parameters are sensitive to the microstructure of the work material, this constitutive model highlights also the recrystallization effects on the flow stress. Orthogonal cutting model is validated using experimental designed cutting tests. More accurate predictions were obtained using this new constitutive model comparing to the classical Johnson-Cook model.
Ecological role of mycotoxins produced by Fusarium graminearum : consequences of the presence of deoxynivalenol (DON) in crop residues on the soil mi…
2012
Fusarium graminearum is a plant pathogenic fungus, causing devastating disease “Fusarium head blight” (FHB) in cereals including wheat and maize. It also contaminates the grains with mycotoxins including deoxynivalenol (DON) which are toxic to human and animals. This disease has resulted in the serious losses in grain yield and quality. We established through a first bibliographic review that during off season fungus survives saprophytically on the crop residues (ecological habitat) and serves as primary inoculum for the next season crop. However, we noticed also that the literature was poor about the role mycotoxins could play in the establishment of F. graminearum in such a habitat. The m…
On the Ability of Perfluorohexane Sulfonate (PFHxS) Bioaccumulation by Two
2019
PFASs (perfluoroalkyl and polyfluoroalkyl substances) are highly fluorinated, aliphatic, synthetic compounds with high thermal and chemical stability as well as unique amphiphilic properties which make them ingredients in a range of industrial processes. PFASs have attracted consideration due to their persistence, toxicity and bioaccumulation tendency in the environment. Recently, attention has begun to be addressed to shorter-chain PFASs, such as perfluorohexane sulfonate [PFHxS], apparently less toxic to and more easily eliminated from lab animals. However, short-chain PFASs represent end-products from the transformation of fluorotelomers whose biotic breakdown reactions have not been ide…
Archaea Analogue Thiolipids for Tethered Bilayer Lipid Membranes on Ultrasmooth Gold Surfaces
2003
Isovarpaan pitkän koukistajalihaksen rooli kävelyn aikana
2017
Isovarpaan pitkä koukistajalihas (flexor hallucis longus, FHL) osallistuu moniin eri tehtäviin. FHL:n tehtäviä ovat isovarpaan koukistus ja osittain myös koko jalan ja nilkan plantaarifleksio. FHL-lihas avustaa myös supinaatiossa ja tukee jalan mediaalista pitkittäiskaarta. Tämän tutkimuksen tarkoituksena oli selvittää FHL-lihaksen roolia erilaisten kävelytehtävien aikana. Tutkimuksessa vertailtiin, miten kävelynopeus (hidas, normaali, nopea) ja erilaiset jal-kineet (juoksukengät, varvassandaalit, ilman kenkiä) vaikuttavat FHL-lihaksen aktiivisuuteen. Tutkittavilta mitattiin myös jalan anatomisia mittoja, joiden perusteella määritettiin tutkittavan jalan rakenne (matalakaarinen, normaalikaa…
El Examen en la Enseñanza de la Historia
2001
En este artículo se trata sobre la influencia del examen en la enseñanza de la Historia, tanto en lo que respecta a la configuración del conocimiento histórico escolar -que termina adoptando características apropiadas al hecho examinatorio- como a las prácticas pedagógicas y a la actuación de alumnos y profesores en la clase, que resultan asimismo determinadas por esta circunstancia. El análisis del papel del examen se vincula con la función crediticia del sistema escolar y con las circunstancias concretas en las que se produce su elaboración y corrección en el contexto escolar. This article deals with the influence of the exam in the teaching of History; in respect to the configuration of …
The authentic self : essays in al-Fārābī and late ancient Greek philosophy
2014
Comparing Physical Quality of Forest and Pasture Soils in a Sicilian Watershed
2011
Forest and pasture soils should have differing properties due, for example, to differing root characteristics or livestock trampling rates, but contradictory results are reported in the literature. The surface soil physical and hydraulic properties of five forest and pasture sites were determined in a Sicilian watershed. In general, forest soils had a significantly lower bulk density, b (by 17 to 35%), and a higher field saturated hydraulic conductivity, Kfs (by a factor of 3.4-11.5) than pasture soils. Differences between water retention characteristics of forest and pasture soils were low when high levels of organic matter, OM, content (> 7.1%) were detected for both land uses. The mean …
Editorial: Emerging heterocycles as bioactive compounds
2023
Heterocycles represent a privileged scaffold due to their ability to interact with biological systems via heteroatoms. It is no coincidence that every year the Food and Drug Administration approves numerous new drugs that contain at least one heterocyclic system as active pharmacophoric part in their structure. Many heterocyclic compounds with therapeutic properties, including anticancer, antimicrobial, anti-inflammatory and so on, come from natural sources such as plants and animals, and medicinal chemists very often use them to study their chemical space and improve their biological activity. In fact, several efficient approaches for the formation of aromatic heterocyclic compounds and th…
In-Field LAMP Detection of Flavescence Dorée Phytoplasma in Crude Extracts of the Scaphoideus titanus Vector
2022
One of the most destructive diseases affecting grapevine in Europe is caused by Flavescence Dorée phytoplasma (FDp), which belongs to the 16Sr-V group and is a European Union quarantine pathogen. Although many molecular techniques such as loop-mediated isothermal amplification (LAMP) are widely used for the rapid detection of FDp in infected grapevine plants, there is no developed isothermal amplification assay for FDp detection in the insect vectors that are fundamental for the spread of the disease. For this reason, a simple in-field real-time LAMP protocol was optimized and developed for the specific detection of FDp in the insect vector Scaphoideus titanus. The LAMP assay was optimized …