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IIT-M researchers use artificial materials and ultrasound to detect defects in large structures Context: Researchers in the Indian Institute of Technology Madras and the University of Nairobi have used metamaterials to improve detection of defects in large structures by guided wave ultrasound. Engineering structures including buildings, pipelines and rails require periodic testing to prevent catastrophic failures occurring due to corrosion, impact, and strain. High-frequency sound w

22 July, 2020
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Vulnerable groups petition global fund

Vulnerable groups petition global fund Context Deprived of sources of livelihood during the pandemic, sex workers, trans-persons, gay and bisexual men, drug users and people living with HIV/AIDS have written to the Global Fund for AIDS, TB and Malaria (GFATM) protesting against being ignored by governments and multilateral agencies in COVID-19-related emergency relief efforts. Global Fund for AIDS, TB and Malaria (GFATM) Founded in 2002, GFATM, also known as Global Fund, is