COVID-19 on Instagram: A content analysis of selected accounts.

Objective: This study aimed to characterize the representation of public health information related to COVID-19 posted on Instagram in 2020.

Methods: This qualitative content analysis study was conducted in Iran as one of the countries with the highest number of confirmed cases of COVID-19. Data were collected from the contents published from February 19 to April 3, 2020, on Instagram.

Body composition measured by computed tomography is associated with colorectal cancer survival, also in early-stage disease.

Cachexia and sarcopenia are associated with poor survival after colorectal cancer (CRC) diagnosis. Computed tomography (CT) can be used to measure aspects of cachexia including sarcopenia, myosteatosis and the amount of subcutaneous and visceral adipose tissue. The aim of this study was to relate CT-based body composition variables with survival outcomes in CRC.

Broadband graphene modulator based on a plus-shaped plasmonic slot waveguide.

A novel broadband graphene modulator based on a plus-shaped plasmonic slot waveguide (PSPSW) has been demonstrated. The designed modulator includes four square silver nanowires and a graphene-${{\rm Al}_2}{{\rm O}_3}$AlO-graphene layer. Four silver nanowires are separated from each other by an ${{\rm SiO}_2}$SiO gap layer, forming a plus-shaped slot waveguide.

Choosing the number of images and image position when analyzing the UNC Passive Aerosol Sampler for occupational exposure assessment.

The University of North Carolina passive aerosol sampler (UNC sampler) could be an alternative when measuring occupational dust exposure, but the time required for microscopic imaging of the sampler needs to be reduced to make it more attractive. The aims of this study were to (1) characterize the effect on precision when reducing imaging, in order to shorten analysis time and (2) assess if the position of the images makes a difference. Eighty-eight samplers were deployed in different locations of an open pit mine.