Current Affairs Quiz - April, 2019

Notes:
The Hump-backed Mahseer, also known as ‘Tor remadevii’ in scientific terms, is a critically endangered species as per the International Union for Conservation of Nature (IUCN). This iconic and highly-valued freshwater fish, termed as the ‘tiger of the water’, inhabits the Cauvery river basin, including Kerala’s Pambar, Kabini and Bhavani rivers. The fish earns its megafauna status by reaching up to a measurement of 1.5m and a weight of 55 kg. Its endangered title also accompanies five other species, including two wild orchids, the Arabian scad, and two wild coffee species exclusive to a few locales in the Western Ghats.

Notes:
Researchers led by Kavli Institute for the Physics and Mathematics of the Universe in Japan has put a theory speculated by the late Stephen Hawking to its most rigorous test to date, and their results have ruled out the possibility that primordial black holes smaller than a tenth of a millimeter make up most of dark matter. They used the gravitational lensing effect to look for primordial black holes between Earth and the Andromeda galaxy. However, gravitational lensing effects are very rare events because it requires a star in the Andromeda galaxy, a primordial black hole acting as the gravitational lens, and an observer on Earth to be exactly in line with one another. In order to maximise the chances of capturing an event, the researchers used the Hyper Suprime-Cam digital camera on the Subaru telescope in Hawaii, which can capture the whole image of the Andromeda galaxy in one shot. Taking into account how fast primordial black holes are expected to move in interstellar space, the team took multiple images to be able to catch the flicker of a star as it brightens for a period of a few minutes to hours due to gravitational lensing. The team’s results showed primordial black holes can contribute no more than 0.1% of all dark matter mass. Therefore, it is unlikely the theory is true.

Notes:
According to a new collaborative study by the Queen’s University Belfast and Aberystwyth University in the UK, the sun’s magnetic field is ten times stronger than previously thought. Using the Swedish one-metre Solar Telescope at Roque de los Muchachos Observatory, in the Canary Islands, David Kuridze studied a particularly strong solar flare which erupted near the surface of the Sun on September 10, 2017. A combination of favourable conditions and an element of luck enabled the team to determine the strength of the flare’s magnetic field with unprecedented accuracy. The researchers believe the findings have the potential to change our understanding of the processes that happen in the Sun’s immediate atmosphere. The study found that the sun’s corona extends millions of kilometres above the surface, measuring 1,400,000 kilometres across — 109 times larger than Earth — and 150,000,000 km from Earth. Solar flares appear as bright flashes and occur when magnetic energy that has built up in the solar atmosphere is suddenly released. These solar flares can lead to storms which, if they hit Earth, form the northern lights — the Aurora Borealis. They can also disrupt communications satellites and GPS systems.

Notes:
In Kerala, the group of science experts of the Hume Centre for Ecology and Wildlife Biology has decided to launch ‘Café Scientifique’ to promote science among public in an interesting way. It is the first such initiative in the state to popularise the subject. It envisages to bring science back into popular culture by demystifying scientific research for the public and empowering non-scientists to comfortably assess science and technology issues, particularly those that impact social policy making. The project is also aimed at making science relevant, powerful and important to the public, especially the younger generations. Here, various topics such as universe, climate change, evolution, genetics and human-animal relations will be discussed in every monthly gathering. It is a grassroots public science initiative based on the French Café Philosophique model.

Notes:
For the second successive year, Telangana has been ranked first in e-learning training programme of Department of Personal and Training (DoPT) of the Government India. In FY 2018-19, Dr. MCR HRD Institute had enrolled over 20,000 field staff in different districts of the State to impart training on 12 soft skill modules and three domain-specific modules on the RTI, office procedures, and finance and accounts, apart from Sustainable Development Goals (SDGs). The institute is also mentoring Punjab, Madhya Pradesh, J&K, Odisha, Uttarakhand, and Gujarat to guide trainers for e-learning training programme and develop modules in regional languages to spread the Comprehensive Online Modified Modules on Induction Training (COMMIT) programme as a national mission.

Notes:
The Indian Army has constructed the 260 feet long cable-suspension bridge ‘Maitri Bridge’ over Indus river at Choglamsar village in Leh in a record time of 40 days. It is the longest suspension bridge over the river and is built by combat engineers of the ‘Sahas aur Yogyata’ regiment of the Indian Army’s ‘Fire and Fury Corps’. The name of the bridge, “Maitri”, is meant to symbolise the amity and solidarity between soldiers and locals. The bridge is expected to improve connectivity in remote regions of Leh and Ladakh. It will connect the remote areas of Choglamsar, Stok and Chuchot, which are said to be the largest villages in the region.

Notes:
The State of the Global Air 2019 report has recently released by the Boston-based Health Effects Institute (HEI). The report revealed that 1.2 million Indians lost their lives due to exposure to unsafe air in 2017. Now, in India, air pollution is the third-highest cause of death among all health risks, ranking just above smoking. This is a combined effect of outdoor fine particles PM2.5, ozone and household (indoor) air pollution. In 2017, exposure to PM 2.5 pollution was found to be the third leading risk factor globally for Type 2 diabetes-related deaths and disability after high blood sugar and excessive body weight. Due to this combined exposure South Asians including Indians are dying early — their life expectancy has reduced by over 2.6 years. In India, early deaths are linked to respiratory diseases, heart disease, stroke, lung cancer, and diabetes that are influenced by air pollution.

Notes:
Phayeng Village of Manipur has been tagged as the India’s first carbon-positive settlement. As part of the carbon-positive village project, Phayeng will receive a grant of Rs10 crore in phases to facilitate afforestation in the catchment of river Maklang that flows along the village. The fund will also be utilised for creation of water bodies, introduction of climate change-resilient varieties of crops, installing solar lights, for setting up a community piggery and poultry farm, an eco-resort, replacing firewood in kitchen with cooking stoves and an indigenous knowledge centre in the village. A village is given the Carbon-Positive Tag if it sequesters more carbon than it emits, slowing the accumulation of greenhouse gases and mitigating the effects of climate change. Phayeng is a scheduled caste village of the Chakpa community in Imphal West district and its conservation efforts are mainly linked to the belief that the forest is a sacred grove. It is surrounded by three densely forested hillocks with fruit trees at centre and a stream flowing through it.

Notes:
On April 5, Telecom giant Samsung Electronics released the Galaxy S10 5G in South Korea. It is the world’s first available smartphone with built-in fifth-generation communications. Earlier, South Korea became the first country to roll out a super-fast 5G mobile network nationwide, which allows users to download entire movies almost instantaneously. Three South Korean carriers – SK Telecom, KT and LG Uplus – — held launch events across Seoul for the Galaxy S10, whose base version costs 1.39 million won ($1,200). Thus, commercializing 5G gives South Korea the chance to build around the technology, which is crucial for the future development of devices such as autonomous vehicles and the Internet of Things (IoT).

Notes:
Scientists at the Centre for Cellular & Molecular Biology (CCMB) have discovered a new enzyme ‘Murein Endopeptidase’ which helps in breaking cell walls of bacteria. This discovery offers a potential for a new drug delivery route to arrest the anti-bacterial resistance through existing antibiotic drugs. Hence, it opens up fresh ways to target microbes, leading to a new wave of antibiotic drugs. The man behind this discovery is Pavan Kumar Chodisetti, research student and his mentor Dr Manjula Reddy. Antibiotics are medicines used to prevent and treat bacterial infections. The findings have been published in the latest issue of Proceedings of National Academy of Sciences, USA