Dual Infrared 2-Photon Microscopy Achieves Minimal Background Deep Tissue Imaging in Brain and Plant Tissues.

Traditional deep fluorescence imaging has primarily focused on red-shifting imaging wavelengths into the near-infrared (NIR) windows or implementation of multi-photon excitation approaches. Here, we combine the advantages of NIR and multiphoton imaging by developing a dual-infrared two-photon microscope to enable high-resolution deep imaging in biological tissues. We first computationally identify that photon absorption, as opposed to scattering, is the primary contributor to signal attenuation.

Can dietary palmitic supplementation and milking frequency modify the cheesemaking properties of milk?

Palmitic acid (PA) supplementation and greater milking frequency can increase milk production and fat yield in dairy cows. However, the technological impacts of those practices on cheesemaking still need to be determined. This work aimed to evaluate, with Holstein dairy cows, the effects of dietary PA, thrice-daily milking frequency, and their interaction on cheese yield and composition.

Covalent Attachment of Horseradish Peroxidase to Single-Walled Carbon Nanotubes for Hydrogen Peroxide Detection.

Single-walled carbon nanotubes (SWCNTs) are desirable nanoparticles for sensing biological analytes due to their photostability and intrinsic near-infrared fluorescence. Previous strategies for generating SWCNT nanosensors have leveraged nonspecific adsorption of sensing modalities to the hydrophobic SWCNT surface that often require engineering new molecular recognition elements. An attractive alternate strategy is to leverage pre-existing molecular recognition of proteins for analyte specificity, yet attaching proteins to SWCNT for nanosensor generation remains challenging.

The Impact of COVID-19 on Cholesteatoma Diagnosis and Treatment.

Objectives: This investigation aimed to examine the effects of the COVID-19 pandemic on treatment delays and the severity of initial disease presentation in cholesteatoma patients treated in the prepandemic and pandemic periods.

Methods:  This retrospective cohort study was of patients who underwent primary surgical management of cholesteatoma between October 2018 and December 2021, split between the prepandemic (October 2018 to February 2020) and pandemic (April 2020 to December 2021) time periods. Data collected included time from referral to otology clinic visit, time of diagnosis, and time of surgical interventions.

Bouncing Beyond Adversity in Oncology: An Exploratory Study of the Association Between Professional Team Resilience at Work and Work-Related Sense of Coherence.

Team resilience at work (TR@W) is an important resource for bouncing beyond adverse situations. Adopting a health-promoting salutogenic approach, this cross-sectional study explores whether oncology team resilience, which is significantly associated with work-related sense of coherence (Work-SoC), and examines the roles of team member characteristics, quality of work life, and perceived impact of COVID-19. Team members ( = 189) from four oncology settings in Québec (Canada) completed self-administered e-questionnaires.