Is this a stroke? The profile of patients with suspected acute cerebrovascular accident transferred by ambulance to the Neurology Emergency Department.

Purpose: Stroke mimics (SMs) are conditions that present similarly to acute cerebrovascular accidents (CVA), potentially leading to diagnostic errors made by physicians or emergency medical teams (EMT). This study aimed to analyse the profile of patients transferred by EMT to the neurological emergency department (NED) with suspected CVA, and to assess the incidence and characteristics of SMs.

Methods: This retrospective study analyzed data from patients admitted to the NED with suspected CVA, transferred by EMT between August 1, 2021 and to January 31, 2022.

Morse Predecomposition of an Invariant Set.

Motivated by the study of recurrent orbits and dynamics within a Morse set of a Morse decomposition we introduce the concept of Morse predecomposition of an isolated invariant set within the setting of both combinatorial and classical dynamical systems. While Morse decomposition summarizes solely the gradient part of a dynamical system, the developed generalization extends to the recurrent component as well. In particular, a chain recurrent set, which is indecomposable in terms of Morse decomposition, can be represented more finely in the Morse predecomposition framework.

The smallest traces of crime: Trace elements in forensic science.

Background: Securing the evidence in various investigative situations is often associated with trace analysis, including fingerprints or blood groups. However, when classic and conventional methods fail, trace elements, such as copper, zinc, fluorine, and many others found in exceedingly insignificant amounts in organisms, may prove useful and effective.

Methods: The presented work reviews articles published between 2003 and 2023, describing the use of trace elements and the analytical methods employed for their analysis in forensic medicine and related sciences.

Multimodal analysis of traction forces and the temperature dynamics of living cells with a diamond-embedded substrate.

Cells and tissues are constantly exposed to chemical and physical signals that regulate physiological and pathological processes. This study explores the integration of two biophysical methods: traction force microscopy (TFM) and optically detected magnetic resonance (ODMR) to concurrently assess cellular traction forces and the local relative temperature. We present a novel elastic substrate with embedded nitrogen-vacancy microdiamonds that facilitate ODMR-TFM measurements.

Near-zero-field microwave-free magnetometry with nitrogen-vacancy centers in nanodiamonds.

We study the fluorescence of nanodiamond ensembles as a function of static external magnetic field and observe characteristic dip features close to the zero field with potential for magnetometry applications. We analyze the dependence of the feature's width and the contrast of the feature on the size of the diamond (in the range 30 nm-3000 nm) and on the strength of a bias magnetic field applied transversely to the field being scanned. We also perform optically detected magnetic resonance (ODMR) measurements to quantify the strain splitting of the zero-field ODMR resonance across various nanodiamond sizes and compare it with the width and contrast measurements of the zero-field fluorescence features for both nanodiamonds and bulk samples.