The dendrochemical approach holds significant promise for determining the geographical origin of wood as a complementary tool to dendroprovenancing based on tree-ring width. Tracing the origin of wood based on its elemental and isotopic composition is in particular interesting for provenance studies at the regional scale, as dendrochemical signatures are indicative of geological and pedological characteristics. Although, absorption of nutrients and trace elements reflects the composition of soil bioavailable pools, it is also modulated by multiple environmental and tree related factors.
View Article and Find Full Text PDFA major feature of the Anthropocene is the drastic increase in global soil erosion. Soil erosion is threatening Earth habitability not only as soils are an essential component of the Earth system but also because societies depend on soils. However, proper quantification of the impact of human activities on erosion over thousands of years is still lacking.
View Article and Find Full Text PDFBackground: The predominance of the psychodynamic approach is often put forward to explain the delay in diagnosis and treatment of attention-deficit disorder with hyperactivity (ADHD) reported in France.
Objective: A bibliometric study of abstracts, articles, or letters authored by French researchers may provide objective insight into this issue.
Methods: Online electronic databases were searched without any date limits for documents related to ADHD, and allocated to the AllFR group when all authors had an affiliation in France or to the notAllFR group when at least one author had an affiliation in France.
Riverine discharge (Q) and dissolved concentrations (C) dictate solute mass export from watersheds. Commonly Q is tracked at a much higher frequency than C for most major solutes, leading to the necessity of load estimation algorithms which are often based on sparse data. The result is that the disproportionate effects of short-duration events (e.
View Article and Find Full Text PDFBackground: Deep inferior epigastric perforator flap (DIEP) for breast reconstruction is a widely accepted technique for breast reconstruction. Secondary benefit of this technique is abdominal contour improvement. Because of direct access, abdominal plication can be performed at the time of abdominal closure.
View Article and Find Full Text PDFBackground: The vertical rectus abdominis myocutaneous (VRAM) flap has been frequently used for perineal reconstruction given the high potential for wound complications associated with direct closure of this area. However, the relationship between defect size and postoperative complications remains undefined.
Methods: A retrospective chart review of the last 20 years for VRAM flaps was performed.
While the isotopic variations of barium were reported for the first time fourty years ago, the number of studies on barium isotopes significantly increased only after 2010. Barium isotope anomalies in meteorites have been successfully used to provide constraints about the origin of presolar SiC grains. In carbonaceous chondrites Ba isotope anomalies are indicative of the heterogeneity of the early solar system, possibly resulting from of a later injection of material after the cooling of solar system.
View Article and Find Full Text PDFDisaster Med Public Health Prep
October 2018
In 2016 France hosted the European football championship. In a context of an increased terrorist threat, Chemical, Bacteriological, Radiological, Nuclear (CBRN) attacks were considered possible. Three days prior to the beginning of the event, the Health Authorities required that a medium sized hospital close to a major potential target, prepare a chemical decontamination centre.
View Article and Find Full Text PDFThe Cambrian explosion, the rapid appearance of most animal phyla in the geological record, occurred concurrently with bottom seawater oxygenation. Whether this oxygenation event was triggered through enhanced nutrient supply and organic carbon burial forced by increased continental weathering, or by species engaging in ecosystem engineering, remains a fundamental yet unresolved question. Here we provide evidence for several simultaneous developments that took place over the Ediacaran-Cambrian transition: expansion of siliceous sponges, decrease of the dissolved organic carbon pool, enhanced organic carbon burial, increased phosphorus removal and seawater oxygenation.
View Article and Find Full Text PDFUnlabelled: Attention deficit hyperactivity disorder (ADH/D) is a neuropsychological developmental disorder characterized by pervasive and impairing symptoms of inattention, hyperactivity, and impulsivity. Whereas it is well known in children, there is still little information about ADH/D in adults, including prevalence. Indeed, there are actually no epidemiological studies in France, despite the considerable impact of this disorder in a patient's professional and affective life.
View Article and Find Full Text PDFSoils of the northern high latitudes store carbon over millennial timescales (thousands of years) and contain approximately double the carbon stock of the atmosphere. Warming and associated permafrost thaw can expose soil organic carbon and result in mineralization and carbon dioxide (CO2) release. However, some of this soil organic carbon may be eroded and transferred to rivers.
View Article and Find Full Text PDFIntroduction: Cannabis use is very problematic among young French people, because of the young age of first consumption and its health consequences. Indeed, the average age of cannabis experimentation is about 15 in France and 49.5% of 17 year-olds report having used cannabis in their lives.
View Article and Find Full Text PDFThe T2K experiment observes indications of ν(μ) → ν(e) appearance in data accumulated with 1.43×10(20) protons on target. Six events pass all selection criteria at the far detector.
View Article and Find Full Text PDFAttention-deficit/hyperactivity disorder (ADHD) is a neurodevelopmental disorder that affects up to 4% of the adults in the general population. The Utah criteria were devised in the 1970s to help a retrospective diagnosis of ADHD during childhood, a necessary but not sufficient condition for diagnosing ADHD at adulthood. A sample of 466 adults was collected from a referral center and a large university.
View Article and Find Full Text PDFObjective: Morningness is a stable characteristic of individuals, related to impulsivity and novelty seeking. The evening orientation is a risk factor for psychiatric conditions such as depression and personality disorders. The authors hypothesized that adults suspected of having ADHD are more evening oriented than adults without ADHD.
View Article and Find Full Text PDFWe performed an improved search for nu(mu) --> nu(e) oscillation with the KEK to Kamioka (K2K) long-baseline neutrino oscillation experiment, using the full data sample of 9.2 x 10(19) protons on target. No evidence for a nu(e) appearance signal was found, and we set bounds on the nu(mu) --> nu(e) oscillation parameters.
View Article and Find Full Text PDFPhys Rev Lett
December 2005
We report the result from a search for charged-current coherent pion production induced by muon neutrinos with a mean energy of 1.3 GeV. The data are collected with a fully active scintillator detector in the K2K long-baseline neutrino oscillation experiment.
View Article and Find Full Text PDFWe present results for nu(mu) oscillation in the KEK to Kamioka (K2K) long-baseline neutrino oscillation experiment. K2K uses an accelerator-produced nu(mu) beam with a mean energy of 1.3 GeV directed at the Super-Kamiokande detector.
View Article and Find Full Text PDFThe practitioner is very frequently confronted by emergencies in drug-addicted patients also having psychiatric symptomatology. In this article the authors will address emergencies related to alcohol (notably intoxication, pre-DTs and the encephalopathies); emergencies related to cannabis (notably intoxication, psychotic states and panic attacks); and emergencies related to other psycho-active substances (overdoses, drug-withdrawal, psychiatric complications related to cocaine or amphetamines). In the domain of drug addiction, as in psychiatry, the practitioner must give as much importance to the organisation of the long-term healthcare plan for the drug addict, ulterior to the management of the immediate emergency.
View Article and Find Full Text PDFThis article describes a new method for the early detection of alcoholic fermentation arrest. This methodology is based on the flow cytometric assessment of Saccharomyces cerevisiae yeasts stained with a carboxyfluorescein diacetate fluorescent viability probe. Multicomponent analysis of viable cell distribution constitutes a promising new tool to describe physiological and dynamic changes to heterogeneous viable populations during alcoholic fermentation, through its ability to discriminate between successful processes and those ending prematurely.
View Article and Find Full Text PDFObjective: To describe changes in plasma viral load, CD4+ cell counts, and drug resistance profiles of HIV-2-infected patients receiving antiretroviral (ARV) therapy in Abidjan, Côte d'Ivoire.
Methods: Consecutive blood samples were collected from 18 HIV-2-infected ARV-naive patients who had received ARV therapy in the UNAIDS drug access initiative (UNAIDS-DAI) in Abidjan between August 1998 and July 2000. Changes in HIV-2 plasma viral load, CD4+ cell counts, and genotypic and phenotypic drug resistance testing were determined.
Ann Med Interne (Paris)
June 1999