Sökresultat

Filtyp

Din sökning på "*" gav 529942 sökträffar

Search for a new Z′ gauge boson in 4μ events with the ATLAS experiment

This paper presents a search for a new Z′ vector gauge boson with the ATLAS experiment at the Large Hadron Collider using pp collision data collected at s = 13 TeV, corresponding to an integrated luminosity of 139 fb −1. The new gauge boson Z′ is predicted by Lμ − Lτ models to address observed phenomena that can not be explained by the Standard Model. The search examines the four-muon (4μ) final s

Environmental determinants of body mass index trajectories: results from a longitudinal Swedish study

Exposure to natural environments is thought to benefit mental and physical health. A better understanding of the interplay between the individual and the environment in relation to public health is imperative in light of the joint biodiversity, climate, and health crises. This study aimed to 1) identify Body Mass Index (BMI) trajectories in the Scania Public Health Cohort (SPHC), 2) characterise t

Increased cesarean section rate and premature birth according to modified WHO maternal cardiovascular risk in pregnant women with congenital heart disease

BackgroundDuring pregnancy and delivery, hemodynamics are altered and complex congenital heart disease has been associated with adverse maternal and neonatal outcomes. We sought to investigate pregnancy outcome and complications in relation to complexity of heart condition.Materials and methodsWe studied women with ACHD discussed at multidisciplinary conferences at Lund University Hospital March 2

Water level fluctuation induced variation of sulfamethazine biogeochemical behavior and expression of resistance genes in the hyporheic zone: A case study of Chaobai river, China

It is well known that the intensive biogeochemical activity in hyporheic zone of groundwater and antibiotic contaminated river water induced the pollution diffusion and variation of biogeochemical transformation. However, the complex interaction process caused by water level fluctuation is difficult to accurately depict on a larger, catchment scale. Therefore, a loosely coupled HYDRUS-3D/GMS was e

Characterizing Performance of Freshwater Wetland Methane Models Across Time Scales at FLUXNET-CH4 Sites Using Wavelet Analyses

Process-based land surface models are important tools for estimating global wetland methane (CH4) emissions and projecting their behavior across space and time. So far there are no performance assessments of model responses to drivers at multiple time scales. In this study, we apply wavelet analysis to identify the dominant time scales contributing to model uncertainty in the frequency domain. We

Modeling China's terrestrial ecosystem gross primary productivity with BEPS model : Parameter sensitivity analysis and model calibration

Terrestrial ecosystems are the largest sink for carbon, and their ecosystem gross primary productivity (GPP) regulates variations in atmospheric carbon dioxide (CO2) concentrations. Current process-based ecosystem models used for estimating GPP are subject to large uncertainties due to poorly constrained parameter values. In this study, we implemented a global sensitivity analysis (GSA) on paramet

Guidelines for acromegaly management : an update

OBJECTIVE: The Acromegaly Consensus Group reconvened in November 2007 to update guidelines for acromegaly management.PARTICIPANTS: The meeting participants comprised 68 pituitary specialists, including neurosurgeons and endocrinologists with extensive experience treating patients with acromegaly. EVIDENCE/CONSENSUS PROCESS: Goals of treatment and the appropriate imaging and biochemical and clinica

Changing patterns of the adult growth hormone deficiency diagnosis documented in a decade-long global surveillance database

BACKGROUND: GH therapy in adult patients with GH deficiency (GHD) was approved over 10 yr ago, and the indication has subsequently gained broad acceptance. The HypoCCS surveillance database is a suitable means to examine the evolution of diagnostic patterns since 1996.METHODS: Baseline demographics, reported cause of GHD, and diagnostic tests were available from 5893 GH-treated patients. Trends fo

The rise of AI urbanism in post-smart cities : a critical commentary on urban artificial intelligence

Artificial intelligence (AI) is emerging as an impactful feature of the life, planning and governance of 21st-century cities. Once confined to the realm of science fiction and small-scale technological experiments, AI is now all around us, in the shape of urban artificial intelligences including autonomous cars, robots, city brains and urban software agents. The aim of this article is to criticall

Effects of lead on the endocrine system in lead smelter workers

In this study of the effects of lead on the endocrine system, 77 secondary lead-smelter workers (i.e., 62 active and 15 retired) were compared with 26 referents. Lead concentrations were determined in plasma with inductively coupled plasma mass spectrometry (i.e., index of recent exposure), in blood with atomic absorption spectrophotometry, and in fingerbone with K x-ray fluorescence technique (i.

Modelling in-ground wood decay using time-series retrievals from the 5th European climate reanalysis (ERA5-Land)

This article presents models to predict the time until mechanical failure of in-ground wooden test specimens resulting from fungal decay. Historical records of decay ratings were modelled by remotely sensed data from ERA5-Land. In total, 2,570 test specimens of 16 different wood species were exposed at 21 different test sites, representing three continents and climatic conditions from sub-polar to

The twin-arginine translocation system is vital for cell adhesion and uptake of iron in the cystic fibrosis pathogen Achromobacter xylosoxidans

BackgroundAchromobacter xylosoxidans is an emerging pathogen that causes airway infections in patients with cystic fibrosis. Knowledge of virulence factors and protein secretion systems in this bacterium is limited. Twin arginine translocation (Tat) is a protein secretion system that transports folded proteins across the inner cell membranes of gram-negative bacteria. Tat has been shown to be impo

International Responsibility for Activities in Outer Space in the Modern Space Age : Article VI of the Outer Space Treaty in the context of international space law and public international law

This dissertation is set in the context of the modern space age, which is characterised by an overall increase in space activities on a global scale and a relative increase in private and commercial space activities. Space has become a business case.This study analyses the principle of international responsibility for activities in outer space as mainly codified in Article VI of the Outer Space TrThis dissertation is set in the context of the modern space age, which is characterised by an overall increase in space activities on a global scale and a relative increase in private and commercial space activities. Space has become a business case.This study analyses the principle of international responsibility for activities in outer space as mainly codified in Article VI of the Outer Space Tr

Inferring Crystal Strain Distributions from X-ray Diffraction Data : Analytical and Computational Advances

By harnessing the powers of polycrystalline materials an unprecedented, technologically-driven age has taken formover the last 100 years. The polycrystal is today, arguably, the most central building block for electronics, renewableenergy, transportation and medical equipment industries. This material class is the reason for the emergence of thepowerful microprocessors, semiconductors, memory chip