Search results for "proxy"
showing 10 items of 141 documents
Criteria deemed important by the relatives for designating a reference person for patients hospitalized in ICU
2020
Abstract Purpose We investigated the criteria that patients' relatives deem important for choosing, among themselves, the person best qualified to interact with the caregiving staff. Methods Exploratory, observational, prospective, multicentre study between 1st March and 31st October 2018 in 2 intensive care units (ICUs). A 12-item questionnaire was completed anonymously by family members of patients hospitalized in the ICU 3 and 5 days after the patient's admission. Relatives were eligible if they understood French and if no surrogate had been appointed by the patient prior to ICU admission. More than one relative per patient could participate. Results In total, 87 relatives of 73 patients…
Assessment of shared decision making in pediatrics: Developing German scales for patients aged 7-18 years, parents and parent-proxy reports (CollaboR…
2021
Abstract Objective To develop parsimonious German scales (CollaboRATEpediatric) to assess shared decision making (SDM) with patients aged 7-18 years, parents and parents on behalf of their children (parent-proxy reports), and to establish comprehensibility and preliminary face validity. Methods Based on an existing SDM scale for adults (CollaboRATE) we developed CollaboRATEpediatric in a two-step approach: (1) team-based translation of the English CollaboRATE scale into German and adaptation for pediatric patients, parents and parent-proxy reports, followed by (2) iterative revisions of the CollaboRATEpediatric scales based on cognitive interviews with patients and parents until comprehensi…
Determination of trimethoprim by the linear absorbances method
1995
The determination of trimethoprim in the presence of dyphylline, proxyphylline, theophylline and caffeine by the linear absorbances method is described. Collinear couples of wavelengths, for the interfering dyphylline-proxyphylline-theophylline-caffeine system (in H2SO4, 0.05 mol/L), are provided in order to allow the determination of the analyte in the presence of these interfering substances.
A 45-year sub-annual reconstruction of seawater temperature in the Bay of Brest, France, using the shell oxygen isotope composition of the bivalve Gl…
2020
A reconstruction of sea surface temperature (SST) spanning 45 years (1966–2011) was developed from δ18O obtained from the aragonitic shells of Glycymeris glycymeris, collected from the Bay of Brest, France. Bivalve sampling was undertaken monthly between 2014 and 2015 using a dredge. In total, 401 live specimens and 243 articulated paired valves from dead specimens were collected, of which 24 individuals were used to reconstruct SST. Temperatures determined using the palaeotemperature equation of Royer et al. compared well with observed SST during the growing season between 1998 and 2010 (Pearson’s correlation: p = 0.002, r = 0.760). Furthermore, a significant negative correlation was foun…
Áreas y suelos: El tamaño de los yacimientos de superficie. Una propuesta metodológica
2011
En los estudios sobre el patrón de asentamiento y en los análisis del territorio, la variable"tamaño" del asentamiento juega un papel importante. Considerada como"proxy" de la población, no siempre resulta fácil de calcular en ausencia de estructuras arqueológicas construidas: aterrazamientos o fortificaciones. En este trabajo se presenta una aproximación al cálculo de dicha variable en los asentamientos de superficie caracterizados simplemente por la dispersión de materiales, que toma como punto de partida la correlación entre aquélla y la presencia de los horizontes edáficos ah. La reciprocidad positiva de ambos factores permite sugerir diversas hipótesis sobre la relación entre la formac…
The future of paleoclimate
2021
Our understanding of natural climate variability rapidly declines over the Common Era (CE) as the pre-instrumental temperature amplitude differs substantially among large-scale reconstructions. Highlighting such differences and emphasizing paleoclimatic findings is crucial for placing anthropogenic climate change in a long-term context. We argue that more proxy records are needed to accurately reconstruct first millennium CE temperature variability and value regional studies producing such data.
Mg/Ca ratios in coralline algae record northwest Atlantic temperature variations and North Atlantic Oscillation relationships
2010
Climate variability in the North Atlantic has been linked in part to the North Atlantic Oscillation (NAO). The NAO influences marine ecosystems in the northwestern Atlantic and transport variability of the cold Labrador Current. Understanding historic patterns of NAO variability requires long‐term and high‐resolution climate records that are not available from instrumental data. Here we present the first century‐scale proxy record of sea surface temperature (SST) variability from the Newfoundland shelf, a region from which other annual‐resolution shallow marine proxies are unavailable. The 116 year record was obtained from three sites along the eastern Newfoundland shelf using laser ablatio…
A noodle, hockey stick, and spaghetti plate: a perspective on high‐resolution paleoclimatology
2010
The high-resolution reconstruction of hemispheric-scale temperature variation over the past-millennium benchmarks recent warming against more naturally driven climate episodes, such as the Little Ice Age and the Medieval Warm Period, thereby allowing assessment of the relative efficacies of natural and anthropogenic forcing factors. Icons of past temperature variability, as featured in the Intergovernmental Panel on Climate Change (IPCC) reports over nearly two decades, have changed from a schematic sketch in 1990, to a seemingly well-solved story in 2001, to more explicit recognition of significant uncertainties in 2007. In this article, we detail the beginning of the movement to reconstru…
Tree-Ring Amplification of the Early Nineteenth-Century Summer Cooling in Central Europe
2015
Abstract Annually resolved and absolutely dated tree-ring chronologies are the most important proxy archives to reconstruct climate variability over centuries to millennia. However, the suitability of tree-ring chronologies to reflect the “true” spectral properties of past changes in temperature and hydroclimate has recently been debated. At issue is the accurate quantification of temperature differences between early nineteenth-century cooling and recent warming. In this regard, central Europe (CEU) offers the unique opportunity to compare evidence from instrumental measurements, paleomodel simulations, and proxy reconstructions covering both the exceptionally hot summer of 2003 and the ye…
Detection and evaluation of an early divergence problem in northern Fennoscandian tree-ring data
2013
Although not yet fully understood, reduced sensitivity of tree growth to temperature at high northern latitudes during the last ˜ 40 years is often linked to concurrent anthropogenic changes of atmospheric composition and global warming. The idea that a temporal localization of the problem could improve its understanding initiated a search for erratic growth-patterns in earlier periods of high quality dendrochronological archives. An extensive network of maximum latewood density (MXD) measurements from northern Fennoscandia likely represents one of the most reliable regional summer-temperature reconstructions. The strong coherence between proxy and instrumental data is, however, interrupted…