Publications by authors named "R Thelen"
Ultramicrotomy is a well-established technique that has been applied in biology and medical research to produce thin sections or a blockface of an embedded sample for microscopy. Recently, this technique has also been applied in materials science or micro- and nanotechnology as a sample preparation method for subsequent characterization. In this work, an application of ultramicrotomy for the cross-section preparation of an inkjet-printed multilayer structure is demonstrated.
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- - Many primary care organizations lack routine collection of sociodemographic data (SDD), which is crucial for addressing health disparities among different populations.
- - A qualitative study involving 33 primary care team members revealed that they use both formal and informal methods to collect SDD, often feeling uncomfortable and facing resource limitations.
- - Participants emphasized the need for better training, streamlined processes, and clear communication regarding the purpose of SDD collection to improve data gathering efforts in primary care settings.
Functional inks enable manufacturing of flexible electronic devices by means of printing technology. Silver nanoparticle (Ag NP) ink is widely used for printing conductive components. A sintering process is required to obtain sufficient conductivity.
View Article and Find Full Text PDFHypothesis: Adhesion between particles and a filter fiber is an important process of the filtration as it dictates the process of separation and in the following the detachment process of particles during filter regeneration. In addition to the shear stress that a new polymeric stretchable filter fiber implements into the particulate structure, the elongation of the substrate (fiber) is also expected to cause a structural change in the surface of the polymer. Thus, the changed contact area and surface energy could affect the adhesion force between particles and fibers.
View Article and Find Full Text PDFBackground: The COVID-19 pandemic forced dental educators to quickly modify the teaching-learning platform without testing outcomes of alternative teaching methods prior to implementation. One critical course affected was the teaching of local anesthesia (LA) that moved from practicing injections using the traditional student-to-student method to the simulation model using manikins.
Purpose: This study compared two LA teaching methods (student-to-student versus simulation) in two consecutive cohorts before and during the pandemic to assess differences in students' skill level and self-confidence.