Results 211 to 220 of about 138,855 (278)

Target Trial Emulation in Observational Research—Strengths, Limitations, and Methodological Considerations

open access: yesJournal of Periodontal Research, EarlyView.
The target trial framework is a pragmatic roadmap for observational causal inference that clarifies questions, mitigates time‐related bias, and improves interpretability while acknowledging limits. With transparent protocols, appropriate methods, and suitable data, it can complement randomized trials and inform practice and policy.
Sebastian‐Edgar Baumeister   +6 more
wiley   +1 more source

The European Union summary report on surveillance for the presence of transmissible spongiform encephalopathies (TSE) in 2024. [PDF]

open access: yesEFSA J
European Food Safety Authority (EFSA)   +7 more
europepmc   +1 more source

Study Design in Clinical and Epidemiologic Research: Observational, Experimental, and Beyond

open access: yesJournal of Periodontal Research, EarlyView.
Population‐based epidemiology and clinical research are complementary and mutually reinforcing: Epidemiology quantifies disease incidence/prevalence and elucidates environmental and social determinants in populations, whereas clinical research evaluates biomarkers, therapeutics, and prognostic outcomes in patients; their convergence underpins ...
Gustavo G. Nascimento   +3 more
wiley   +1 more source

New knowledge about shock events that affected the L‐chondrite parent body from two heavily shocked L6 meteorite finds

open access: yesMeteoritics &Planetary Science, EarlyView.
Abstract We report new results from a study of shock‐related features in the L6 ordinary chondrites Northwest Africa (NWA) 4672 and NWA 12841. Our observations confirm the occurrence of eight high‐pressure (HP) minerals in each meteorite, namely, ringwoodite, majorite, akimotoite, wadsleyite, albitic jadeite, lingunite, tuite, and xieite.
I. Baziotis   +5 more
wiley   +1 more source

Noble gases and nitrogen in material from asteroid Bennu

open access: yesMeteoritics &Planetary Science, EarlyView.
Abstract We report the elemental and isotopic abundances of all stable noble gases (helium, neon, argon, krypton, and xenon) in eight particles from asteroid Bennu returned by NASA's OSIRIS‐REx mission. We also report nitrogen abundances and isotopic ratios that were analyzed alongside neon and argon in four additional Bennu particles.
B. Marty   +7 more
wiley   +1 more source

Static recrystallization of shocked calcite in Ries impact breccias

open access: yesMeteoritics &Planetary Science, EarlyView.
Abstract Calcite is prone to chemical and microstructural modifications, especially after having been strained at high stresses and strain rates, as during hypervelocity impact events. These modifications include precipitation from pore fluid as well as replacement of strained volumes by recrystallization. In calcite aggregates of a metagranite breccia
Claudia A. Trepmann   +8 more
wiley   +1 more source

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