Publications by authors named "M Gunjan"

Article Synopsis
  • Diphtheria is re-emerging, prompting the need to understand its clinical profile, morbidity, mortality, and immunization levels; this study focused on 94 patients at a hospital in New Delhi.
  • The findings showed a mean age of 9.4 years, low vaccination rates (only 6.4% fully vaccinated), and a 13% case fatality rate, with significant complications like neuropathy and respiratory issues.
  • The study emphasizes the need for targeted immunization programs and early treatment to control diphtheria, especially in areas with poor vaccination coverage.
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The cloaking of the droplet and solid spheres by a thin ferrofluid layer forms a ferrofluid-wetting ridge, enabling the magnet-assisted directional manipulation of droplets and solid spheres on the magneto-responsive slippery surface. Understanding the interplay of various forces governing motion unravels the manipulation mechanism. The transportation characteristics of droplets and solid spheres on such surfaces enable their controlled manipulation in multiple applications.

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Article Synopsis
  • Adolescent girls are at high risk of nutritional anaemia due to their increased physical activity and rapid growth, prompting a study during the T-3 anaemia camps organized by the Indian government.
  • A study of 203 adolescent girls in Delhi found a 59% prevalence of anaemia, with most cases classified as mild; the average hemoglobin level was 11.3 gm/dl.
  • Key factors associated with anaemia included dietary habits, deworming status, and body mass index (BMI), highlighting the need for regular health camps to address adolescent anaemia in schools.
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It has been recently shown that small-volume droplets on lubricant-infused surfaces (LISs) can be analytically modeled using rotationally symmetric constant mean curvature (CMC) surfaces. While such an approach is available for noncloaked droplets, a similar approach is missing for cloaked droplets that are ubiquitous in a number of LIS-related applications. The presence of a thin cloaking film on the top spherical cap portion and its gradual transition to a bulk meniscus remain unaddressed for its implications on the interfacial profile of cloaked droplets.

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Superior mobility of droplets on lubricant-infused surfaces (LIS) has recently attracted significant attention for designing liquid-repellent surfaces. Unlike sessile droplets on flat surfaces wherein the contact line is easily visible in experiments, the contact line on LIS is masked by the lubricant meniscus, and special imaging techniques are required to visualize the hidden droplet-lubricant interface. Moreover, the overall shape deviates significantly from the spherical cap geometry even at very low droplet volumes.

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