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Polarimetric 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.
Hematuria in the ER patient: optimizing detection of upper tract urothelial cancer - A pictorial essay.
Emerg Radiol
January 2025
Department of Radiology and Radiological Science, School of Medicine, Johns Hopkins University, 601 North Caroline Street, Baltimore, MD, 21287-0801, USA.
Upper tract urothelial carcinoma (UTUC) is a rare and challenging subset of the more frequently encountered urothelial carcinomas (UCs), comprising roughly 5-7% of all UCs and less than 10% of all renal tumors. Hematuria is a common presenting symptom in the emergency setting, often prompting imaging to rule out serious etiologies, with UTUC especially posing as a diagnostic challenge. These UTUC lesions of the kidney and ureter are often small, mimicking other pathologies, and are more aggressive than typical UC of the bladder, emphasizing the importance of timely and accurate diagnosis.
View Article and Find Full Text PDFJohn the Baptist in Leonardo Da Vinci's Painting - What's in a Smile?
Clin Dermatol
January 2025
Agnes Irwin School. Rosemont, Pennsylvania, USA.
The smile is a complex human facial expression, most commonly associated with joy. We present a detailed view on Leonardo Da Vinci's painting of Saint John the Baptist, between 1516 to 1516, which illustrates a smiling saint, which has evoked multiple explanations and theories. Discussing Da Vinci's concept of painting as science media and the two merely contradictory painting techniques chiaroscuro and sfumato, we attempt to approach this picture.
View Article and Find Full Text PDFLearning Fermionic Correlations by Evolving with Random Translationally Invariant Hamiltonians.
Phys Rev Lett
December 2024
Dahlem Center for Complex Quantum Systems, Freie Universität Berlin, 14195 Berlin, Germany.
Schemes of classical shadows have been developed to facilitate the readout of digital quantum devices, but similar tools for analog quantum simulators are scarce and experimentally impractical. In this Letter, we provide a measurement scheme for fermionic quantum devices that estimates second and fourth order correlation functions by means of free fermionic, translationally invariant evolutions-or quenches-and measurements in the mode occupation number basis. We precisely characterize what correlation functions can be recovered and equip the estimates with rigorous bounds on sample complexities, a particularly important feature in light of the difficulty of getting good statistics in reasonable experimental platforms, with measurements being slow.
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