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We theoretically demonstrate that ponderomotive interactions near the electron cross-over can be used for aberration correction in ultrafast electron microscopes. Highly magnified electron shadow images from SiN thin films are utilized to visualize the distortions induced by spherical aberrations. Our simulations of electron-light interactions indicate that spherical aberrations can be compensated resulting in an aberration-free angle of 8.
View Article and Find Full Text PDFFinding Common Ground in Health Promotion in an Era of Growing Distrust and Polarization.
Am J Health Promot
January 2025
In 2025 the changes in national leadership cast a surprising light and ineffable shadows on America's race, gender and class dynamics. Unexpectedly, women and people of color did not vote as a monolithic force in favor of one side or another of culture wars. In the health promotion discipline alarms are being sounded that America's new political leadership will use their newfound popularity among a wider constituency to question the integrity of public health and challenge the value of science writ large.
View Article and Find Full Text PDFHealthcare provision for displaced people in transit: Analyses of routinely collected data from INTERSOS clinics at the Ukrainian border with Moldova and Poland.
J Migr Health
December 2024
INTERSOS HELLAS, Thessaloniki, Greece.
Background: The Russian military invasion of Ukraine has sparked Europe's largest forced displacement since World War II, bringing about significant health vulnerabilities for migrants and refugees. European health information systems lack comprehensive data coverage, especially in underrepresented migration stages like transit. This study aims to address this gap by analyzing data from INTERSOS clinics at the Moldovan and Polish borders with Ukraine to identify the common health conditions prompting people to seek healthcare services during transit.
View Article and Find Full Text PDFPolarimetric Compressed Sensing with Hollow, Self-Assembled Diffractive Films.
ACS Nano
January 2025
Department of Mechanical Engineering, University of California at Riverside, Riverside, California 92521, United States.
Sensing light's polarization and wavefront direction enables surface curvature assessment, material identification, shadow differentiation, and improved image quality in turbid environments. Traditional polarization cameras utilize multiple sensor measurements per pixel and polarization-filtering optics, which result in reduced image resolution. We propose a nanophotonic pipeline that enables compressive sensing and reduces the sampling requirements with a low-refractive-index, self-assembled optical encoder.
View Article and Find Full Text PDFExploring hope and expectations amidst the shadows: Navigating through the hearts of cancer patients admitted to a palliative care unit.
Palliat Support Care
January 2025
Pain Relief and Palliative Care Unit, Department of Radiology, Aretaieion Hospital, School of Medicine, National & Kapodistrian University of Athens, Athens, Greece.
Objectives: The objective of this study is to conduct an in-depth exploration of the psychological well-being, hope, and expectations of cancer patients receiving care in a palliative care unit, utilizing a qualitative research approach.
Methods: We employed the methodology of interpretative phenomenological analysis (IPA). Our data collection involved conducting 1-hour semi-structured interviews with the patients.
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