559 results match your criteria: "Universiteit Maastricht.[Affiliation]"

The first study of the angular distribution of μ^{+}μ^{-} pairs produced in the forward rapidity region via the Drell-Yan reaction pp→γ^{*}/Z+X→ℓ^{+}ℓ^{-}+X is presented, using data collected with the LHCb detector at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 5.1  fb^{-1}. The coefficients of the five leading terms in the angular distribution are determined as a function of the dimuon transverse momentum and rapidity.

View Article and Find Full Text PDF

Falls may lead to functional impairment, fear of falling, decreased quality of life, high health care costs and mortality. A case of an older adult presented in this article, illustrates the multifactorial nature of risk of falling and fall prevention strategies. Recently, meta-analyses were performed to determine the effectiveness of interventions to prevent falls and to explore the effect of intervention components in reducing fear of falling.

View Article and Find Full Text PDF

[Reliable diagnostics: clinical gestalt or prediction rule?].

Ned Tijdschr Geneeskd

June 2022

Julius Centrum voor Gezondheidswetenschappen en Eerstelijnsgeneeskunde, Utrecht.

Diagnostic prediction models can support the diagnostic process, both for experienced physicians and for physicians with little experience. More attention should be paid to the incorporation of diagnostic prediction models in the electronic patient record, so that a more accurate probability estimate can be made without simplification to rounded sumscores. A uniform cut-off of sum scores with associated categorization is also undesirable, because it does not take the context of the individual patient sufficiently into account.

View Article and Find Full Text PDF

Objective: To gain insight in medical specialists' and nurse practitioners' opinions on multimorbidity and coordination and tailoring of hospital care.

Design: Exploratory mixed-method design.

Method: From August 2018 until January 2019, 35 Dutch medical associations were asked to forward a digital survey with open- and close-ended questions to their members.

View Article and Find Full Text PDF

The first full angular analysis and an updated measurement of the decay-rate CP asymmetry of the D^{0}→π^{+}π^{-}μ^{+}μ^{-} and D^{0}→K^{+}K^{-}μ^{+}μ^{-} decays are reported. The analysis uses proton-proton collision data collected with the LHCb detector at center-of-mass energies of 7, 8, and 13 TeV. The dataset corresponds to an integrated luminosity of 9  fb^{-1}.

View Article and Find Full Text PDF

Quantum chromodynamics, the theory of the strong force, describes interactions of coloured quarks and gluons and the formation of hadronic matter. Conventional hadronic matter consists of baryons and mesons made of three quarks and quark-antiquark pairs, respectively. Particles with an alternative quark content are known as exotic states.

View Article and Find Full Text PDF

Introduction: Although much work has been done on US abortion ideology, less is known relative to the psychological processes that distinguish personal abortion beliefs or how those beliefs are communicated to others. As part of a forthcoming probability-based sampling designed study on US abortion climate, we piloted a study with a controlled sample to determine whether psychological indicators guiding abortion beliefs can be meaningfully extracted from qualitative interviews using natural language processing (NLP) substring matching. Of particular interest to this study is the presence of cognitive distortions-markers of rigid thinking-spoken during interviews and how cognitive distortion frequency may be tied to rigid, or firm, abortion beliefs.

View Article and Find Full Text PDF

The first observation of the semileptonic b-baryon decay Λ_{b}^{0}→Λ_{c}^{+}τ^{-}ν[over ¯]_{τ}, with a significance of 6.1σ, is reported using a data sample corresponding to 3  fb^{-1} of integrated luminosity, collected by the LHCb experiment at center-of-mass energies of 7 and 8 TeV at the LHC. The τ^{-} lepton is reconstructed in the hadronic decay to three charged pions.

View Article and Find Full Text PDF

Tests of lepton universality in B^{0}→K_{S}^{0}ℓ^{+}ℓ^{-} and B^{+}→K^{*+}ℓ^{+}ℓ^{-} decays where ℓ is either an electron or a muon are presented. The differential branching fractions of B^{0}→K_{S}^{0}e^{+}e^{-} and B^{+}→K^{*+}e^{+}e^{-} decays are measured in intervals of the dilepton invariant mass squared. The measurements are performed using proton-proton collision data recorded by the LHCb experiment, corresponding to an integrated luminosity of 9  fb^{-1} .

View Article and Find Full Text PDF

Objective: To determine whether a multicomponent intervention based on physical activity with technological support and nutritional counselling prevents mobility disability in older adults with physical frailty and sarcopenia.

Design: Evaluator blinded, randomised controlled trial.

Setting: 16 clinical sites across 11 European countries, January 2016 to 31 October 2019.

View Article and Find Full Text PDF

Two narrow resonant states are observed in the Λ_{b}^{0}K^{-}π^{+} mass spectrum using a data sample of proton-proton collisions at a center-of-mass energy of 13 TeV, collected by the LHCb experiment and corresponding to an integrated luminosity of 6  fb^{-1}. The minimal quark content of the Λ_{b}^{0}K^{-}π^{+} system indicates that these are excited Ξ_{b}^{0} baryons. The masses of the Ξ_{b}(6327)^{0} and Ξ_{b}(6333)^{0} states are m[Ξ_{b}(6327)^{0}]=6327.

View Article and Find Full Text PDF
Article Synopsis
  • The study examines charged particle production in proton-lead and proton-proton collisions at a center-of-mass energy of 5 TeV, focusing on how it varies with pseudorapidity and transverse momentum.
  • It finds that charged particle production is suppressed in proton-lead collisions compared to proton-proton in the forward region, while there's an increase in the backward region for higher transverse momentum values.
  • These findings provide valuable insights into nuclear parton distribution functions (PDFs) and saturation models, especially at low parton momentum fractions down to 10^{-6}.
View Article and Find Full Text PDF

[Not Available].

Huisarts Wet

March 2022

Huisarts, leerstoelhouder Nederlands Huisartsen Genootschap 'Bevorderen van persoonsgerichte zorg in richtlijnen'., NHG, Utrecht, Nederland.

View Article and Find Full Text PDF
Article Synopsis
  • * Data was collected using the LHCb detector with a total of 6 fb^{-1} at a center-of-mass energy of 13 TeV.
  • * An increase in the fraction of charm jets is noted at higher rapidity levels of the Z boson, suggesting the presence of an intrinsic charm component within the proton.
View Article and Find Full Text PDF

An amplitude analysis of flavor-untagged B_{s}^{0}→J/ψpp[over ¯] decays is performed using a sample of 797±31 decays reconstructed with the LHCb detector. The data, collected in proton-proton collisions between 2011 and 2018, correspond to an integrated luminosity of 9  fb^{-1}. Evidence for a new structure in the J/ψp and J/ψp[over ¯] systems with a mass of 4337_{-4}^{+7} _{-2}^{+2}  MeV and a width of 29_{-12}^{+26} _{-14}^{+14}  MeV is found, where the first uncertainty is statistical and the second systematic, with a significance in the range of 3.

View Article and Find Full Text PDF

Analysis of Neutral B-Meson Decays into Two Muons.

Phys Rev Lett

January 2022

Department of Physics and Astronomy, University of Manchester, Manchester, United Kingdom.

Branching fraction and effective lifetime measurements of the rare decay B_{s}^{0}→μ^{+}μ^{-} and searches for the decays B^{0}→μ^{+}μ^{-} and B_{s}^{0}→μ^{+}μ^{-}γ are reported using proton-proton collision data collected with the LHCb detector at center-of-mass energies of 7, 8, and 13 TeV, corresponding to a luminosity of 9  fb^{-1}. The branching fraction B(B_{s}^{0}→μ^{+}μ^{-})=(3.09_{-0.

View Article and Find Full Text PDF

Climate change forms an urgent health threat and gains attention in global medical literature as well as in Dutch healthcare. Climate change, however, is still absent in medical education. Health professionals must acquire knowledge concerning the health effects of climate change and train the values, skills, capacities, and motivation necessary to contribute to climate adaptation and mitigation.

View Article and Find Full Text PDF

Supervised exercise therapy with lifestyle counseling by a specialized physical therapist has replaced endovascular or open revascularization as primary treatment for intermittent claudication for most patients in the Netherlands. Succesful implementation of this guideline-recommended treatment strategy was achieved by warranting availability and quality of care by organizing care around a national network. Further reductions in unnecessary interventions in this population may be achieved when general practitioners and medical specialists collaborate, for instance by making in-hospital vascular diagnostic laboratories accessible for primary care.

View Article and Find Full Text PDF

Objectives: Interhospital transports of critically ill patients are high-risk medical interventions. Well-established parameters to quantify the quality of transports are currently lacking. We aimed to develop and cross-validate a score for interhospital transports.

View Article and Find Full Text PDF

The branching fraction of the rare B_{s}^{0}→ϕμ^{+}μ^{-} decay is measured using data collected by the LHCb experiment at center-of-mass energies of 7, 8, and 13 TeV, corresponding to integrated luminosities of 1, 2, and 6  fb^{-1}, respectively. The branching fraction is reported in intervals of q^{2}, the square of the dimuon invariant mass. In the q^{2} region between 1.

View Article and Find Full Text PDF

Observation of the Mass Difference between Neutral Charm-Meson Eigenstates.

Phys Rev Lett

September 2021

Department of Physics and Astronomy, University of Manchester, Manchester, United Kingdom.

A measurement of mixing and CP violation in neutral charm mesons is performed using data reconstructed in proton-proton collisions collected by the LHCb experiment from 2016 to 2018, corresponding to an integrated luminosity of 5.4  fb^{-1}. A total of 30.

View Article and Find Full Text PDF

Objective: To evaluate changes in bone turnover and bone mineral density (BMD) in patients with rheumatoid arthritis (RA) receiving glucocorticoids, after discontinuation of denosumab for 12 months.

Methods: We conducted a randomized, double-blind, placebo-controlled, phase II study of RA patients. Patients received placebo, denosumab 60 mg, or denosumab 180 mg every 6 months for 12 months and were followed up for an additional 12 months after discontinuation, during which no bone loss prevention therapy was instituted.

View Article and Find Full Text PDF

[Too little attention for overdiagnosis?].

Ned Tijdschr Geneeskd

September 2021

Universiteit Maastricht, Vakgroep huisartsgeneeskunde, Care and Public Health Research Institute (CAPHRI), Maastricht.

Due to the rapid technical development and increasing availability of diagnostic tests, the use of diagnostics by general practitioners and medical specialists is increasing. However, the excessive use of diagnostic tests is also explained by the behavior of the doctors as well as patients. In this Perspective we outline factors that perpetuate excessive use of diagnostic tests, further fuelling overdiagnosis.

View Article and Find Full Text PDF