Background Dengue is a systemic and dynamic disease with symptoms ranging from undifferentiated fever to dengue shock syndrome. Assessment of patients' severity of dehydration is integral to appropriate care and management. Urine colour has been shown to have a high correlation with overall assessment of hydration status. This study tests the feasibility of measuring dehydration severity in dengue fever patients by comparing urine colour captured by mobile phone cameras to established laboratory parameters. Methodology/Principal findings Photos of urine samples were taken in a customized photo booth, then processed using Adobe Photoshop to index urine colour into the red, green, and blue (RGB) colour space and assigned a unique RGB value. The RGB values were then correlated with patients' clinical and laboratory hydration indices using Pearson's correlation and multiple linear regression. There were strong correlations between urine osmolality and the RGB of urine colour, with r =-0.701 (red), r =-0.741 (green), and r =-0.761 (blue) (all p-value <0.05). There were strong correlations between urine specific gravity and the RGB of urine colour, with r =-0.759 (red), r =-0.785 (green), and r =-0.820 (blue) (all p-value <0.05). The blue component had the highest correlations with urine specific gravity and urine osmolality. There were moderate correlations between RGB components and serum urea, at r =-0.338 (red),-0.329 (green),-0.360 (blue). In terms of urine biochemical parameters linked to dehydration, multiple linear regression studies showed that the green colourimetry code was predictive of urine osmolality (β coefficient-0.082, p-value <0.001) while the blue colourimetry code was predictive of urine specific gravity (β coefficient-2,946.255, p-value 0.007). Conclusions/Significance Urine colourimetry using mobile phones was highly correlated with the hydration status of dengue patients, making it a potentially useful hydration status tool.

When the animated TV shows Young Justice (2010–) and Green Lantern: The Animated Series (2011–13) were canceled, fans of the shows campaigned together to have both shows renewed. I refer to this campaign as #saveYJandGLTAS, a hashtag frequently used on internet posts related to the campaign. This case study investigates how Tumblr served as a counterpublic space for this movement, while other social media platforms served as the more public face of this campaign. Through my analysis, I draw conclusions about how fandoms operate and the changes occurring as a result in the relationships between the media industry, creators, and consumers.