Science & Technology Current Affairs MCQs

Notes:
Rwanda has declared its first-ever Marburg Virus Disease (MVD) outbreak over, with 42 days without new cases, confirmed by WHO. MVD is a severe, often fatal hemorrhagic fever caused by the Marburg virus, with no approved vaccines or treatments. First identified in 1967 in Marburg, Germany, linked to infected green monkeys. Outbreaks are mainly in sub-Saharan Africa, including Tanzania, Uganda, Angola, Ghana, Kenya, and Zimbabwe. The virus is transmitted from fruit bats to humans, spreading through direct contact with infected bodily fluids or contaminated surfaces.

Notes:
Scientists are using two telescopes as part of the Cubic Kilometre Neutrino Telescope (KM3NeT) to detect high-energy neutrinos beneath the Mediterranean Sea. The Cubic Kilometre Neutrino Telescope (KM3NeT) is located at the bottom of the Mediterranean Sea. Neutrinos are tiny, electrically neutral particles, discovered in 1959, and the second most abundant particles after photons. They rarely interact with matter, earning the nickname “ghost particles.” Detecting neutrinos is challenging due to their minimal interactions. KM3NeT, an underwater telescope, detects neutrino interactions via Cherenkov radiation in the sea, which provides ideal conditions for detection.

Notes:
The Food Safety and Standards Authority of India clarified the use of methylcobalamin (MeCbl), an active form of Vitamin B12. Methylcobalamin, structurally distinct from other Vitamin B12 forms, contains a methyl group bonded to a cobalt atom. It is found in supplements and food sources like fish, meat, eggs, milk, and milk products. Vitamin B12 is essential for DNA synthesis, red blood cell production, and neurological function. Deficiency can cause severe health issues, often requiring supplementation. It supports vital functions like cell growth, blood formation, and protein synthesis.

Notes:
Tularemia, also called ‘rabbit fever,’ has risen by over 50% in the US recently. It is a rare but potentially deadly infectious disease. It primarily affects children aged 5-9, older men, and American Indians or Alaska Natives. Tularemia is caused by the bacterium Francisella tularensis, which can infect various animals, especially rabbits and rodents. The disease is transmitted to humans through tick bites, contact with infected animals, or contaminated water. Symptoms can range from skin ulcers to severe respiratory issues.

Notes:
Nadi Tarangini, India’s first Ayurvedic medical device, received approval from Central Drugs Standard Control Organization (CDSCO). It costs ₹55,000 and is manufactured by Atreya Innovations in Pune. The device analyzes 22 Ayurvedic parameters and provides a 10-page report in 10 Indian languages. It has an accuracy of 85% and is used in over 1250 Ayurvedic clinics. Nadi Tarangini received patents in the US, Europe, Indonesia, and India.

Notes:
LingoSat, a joint project of Japan’s Kyoto University and Sumitomo Forestry, is the first wooden satellite launched into orbit. It uses wood from honoki, a magnolia tree native to Japan, and is assembled using traditional Japanese crafts without screws or glue. The satellite’s name comes from the Latin word “Ligno,” meaning wood. LignoSat 1 is a CubeSat measuring 10 cm on each side and weighing 900 grams. LignoSat 2, a 2U CubeSat, is planned for launch in 2026.

Notes:
ISRO successfully demonstrated the restart of its Vikas liquid engine at the Propulsion Complex, Mahendragiri. The test is a significant step towards developing reusable launch vehicle technologies to reduce future space mission costs. The Vikas engine, named after Dr. Vikram Sarabhai, was conceptualized and designed by ISRO’s Liquid Propulsion Systems Centre (LPSC). LPSC specializes in designing and developing liquid propulsion stages for ISRO’s launch vehicles. The Vikas engine powers the liquid stages of PSLV, GSLV, and GSLV Mk-III launch vehicles, enhancing their payload capacities.

Notes:
The Central Drugs Standard Control Organisation (CDSCO) has approved Qartemi, a second “living drug,” which is a Chimeric Antigen Receptor (CAR) T-cell therapy designed to treat blood cancer. “Living drugs” involve modifying a patient’s cells and reintroducing them into the body. CAR T-cell therapy is an innovative immunotherapy where T-cells are genetically engineered to target cancer cells. T-cells are extracted from the patient’s blood, modified in the lab by adding a gene for a man-made receptor (CAR), which helps T-cells recognize cancer cells. Modified CAR-T cells are then reintroduced to kill cancer cells.

Notes:
Georgia has been certified malaria-free by the World Health Organization. It is located at the intersection of Eastern Europe and West Asia, in the Transcaucasia region. Malaria is a life-threatening fever caused by Plasmodium parasites spread by infected female Anopheles mosquitoes. It is primarily found in tropical countries and is not contagious. The disease cannot spread from person to person; transmission occurs through mosquito bites.

Notes:
Paraquat, also called paraquat dichloride or methyl viologen, is a widely used herbicide. It controls weed growth and desiccates crops like cotton before harvest. The World Health Organization classifies it as a Category 2 chemical, meaning it is moderately hazardous and irritating. Paraquat is banned in over 70 countries, including China and the European Union, due to its high toxicity. Despite the bans, it is still widely used in the US and India. Recently, paraquat poisoning gained attention after being used in a high-profile murder case in Kerala.