About Tellurium:
- Tellurium is a semi-metallic, lustrous, crystalline, brittle, silver-white element.
- Atomic Number: 52
- It has the properties of both metals and nonmetals.
- It forms many compounds corresponding to those of sulphurand selenium.
- When burned in the air, tellurium has a greenish-blue flame and forms tellurium dioxide as a result.
- Tellurium is a semiconductor material and is slightly photosensitive.
- It is one of the only elements that readily combine with gold (Au).
- Sources:
- Tellurium is sometimes found free in nature.
- More commonly, it is found combined with metals, such as in the minerals calaverite (gold telluride, AuTe2) and sylvanite (silver-gold telluride).
- Commercially, tellurium is obtained as a byproduct of electrolytic copper refining.
- Applications:
- Tellurium is alloyed with copper and stainless steel to make these metals more workable.
- It is added at very low levels to lead to decreases the corrosive action of sulfuric acid in batteries and to improve the lead’s strength and hardness.
- It is used as a colouring agent in ceramics.
- It is also used in the electronics industry, for example, with cadmium and mercury to form photosensitive semiconductors.
- It is used in vulcanizing rubber, and in catalysts for petroleum cracking, and in blasting caps for explosives.
What is a Neutron Star?
- A neutron star is an extremely dense and compact celestial object that forms after the core of a massive star collapses under its own gravity during a supernova explosion.
About Commando Battalions for Resolute Action (CoBRA):
- Established in 2008, CoBRA is a specialised unit of the Central Reserve Police Force (CRPF).
- It is one of the few units of the CRPF in the country that is specifically trained in guerilla tactics and jungle warfare.
- They are also known as ‘jungle warriors’.
- Originally established to counter the Naxalite problem (it was originally trained to track, hunt, and eliminate Naxalite groups), CoBRA is deployed within India to address any insurgent group engaging in asymmetrical warfare.
- Personnel for CoBRA areselected from CRPF, as CoBRA is an integral part of CRPF.
- They undergo rigorous commando and jungle warfare trainingbefore being posted to CoBRA units for operations.
- It has 10 units, raised between 2008 and 2011
- The majority of CoBRA teams are deployed in various Maoist violence-affected states, while a few are based in the northeastern states to undertake counter-insurgency operations.
Key Facts about the Central Reserve Police Force (CRPF):
- It is the premier central police force of the Union of India for internal security.
- It functions under the authority of the Ministry of Home Affairs (MHA)of the Government of India.
- History of CRPF:
- Originally constituted as the Crown Representative Police in 1939, it is one of the oldest Central paramilitary forces (now termed the Central Armed Police Force).
- CRPF was raised as a sequel to the political unrest and agitations in the then princely Statesof India following the Madras Resolution of the All-India Congress Committee in 1936 and the ever-growing desire of the Crown Representative to help the vast majority of the native States to preserve law and order as a part of imperial policy.
- It became the CRPF on enactment of the CRPF Act on 28th December
- Duties performed by the CRPF are
- Crowd control, Riot control
- Counter Millitancy / Insurgency operations, Dealing with Left Wing Extremism
- Overall co-ordination of large-scale security arrangements,especially with regard to elections in disturbed areas.
- Protection of VIPs and vital installations
- Checking environmental degradation and protection of local flora and fauna
- Fighting aggression during wartime
- Participating in UN Peacekeeping missions
- Rescue and Relief operationsat the time of natural calamities.
About Protection of Women from Domestic Violence Act 2005 (DV Act):
- The DV Act was enacted by Parliament on September 13, 2005, and extends to the whole of India.
- It is basically meant to provide protection to a wife or female live-in partner from violence at the hands of the husband, a male live-in-partner, or his relatives.
- Domestic violence under the Act includes actual abuse or the threat of abuse, whether physical, sexual, verbal, emotional, or economic.
- Harassment by way of dowry demands is also covered under the definition of domestic violence.
- Who is covered under the Act?
- The Act covers all women who may be mother, sister, wife, widow, or partners living in a shared household.
- The relationship may be in the nature of marriage or adoption.
- In addition, relationships with family members living together as a joint family are also included.
- Who can file a complaint?
- Any woman who alleges to have been subjected to any act of domestic violence by the offender or any person may file a complaint on her behalf.
- A child is also entitled to relief under the DV Act. The mother of such a child can make an application on behalf of her minor child (whether male or female).
- In cases where the mother makes an application to the court for herself, the children can also be added as co-applicants.
- However, no female relative of the husband or the male partner can file a complaint against the wife or the female partner.
- Against whom can a complaint be filed?
- Any adult male member who has been in a domestic relationship with the woman
- Relatives of the husband or the male partner (including both male and female relatives of the male partner)
- Remedies available: Under the law, women can apply for reliefs such as
- Protection Order
- Residence Order for residing at Matrimonial House
- Monetary Orders, which include maintenance for herself and her children
- Temporary custody of children
- Compensation order for the damages caused to her
- It is only when the relief granted by the courts is breached that criminal action is taken against the respondent.
- Protection Officers:
- Under the DV Act, Protection Officers have been appointed by the Government to help the aggrieved woman in filing the case.
- They are to be attached to the Magistrates of the courts for the area notified for each protection officer.
- The Protection Officer facilitates the women to approach the court by providing legal aid and get appropriate relief from the courts
- Further, they execute the orders of the Court wherever necessary with the help of the police.
- Options are also available to the aggrieved person to file the petition before the Judicial Magistrate Court, or with the service provider, or at a nearby police station.
- Service Providers:
- Under the DV Act, Service Providers are members of notified Non Governmental Organizations.
- They co-ordinate with all the stakeholders to get justice and relief for the victims of domestic violence.
- They help the aggrieved women in filing the Domestic Incident Report, provide accommodation in the short-stay homes along with their children, counsel them, and help the aggrieved get medical treatment if necessary.
- They also impart them with vocational training to help them secure employment and sustainable income.
About Odonata Species:
- Odonata is an insect order consisting of three groups: Anisoptera(which includes dragonflies), Zygoptera (which includes damselflies), and Anisozygoptera (a relict group represented by only two living species).
- It is one of the ancient orders of insects.
- Odonata is a diverse group, with over 6,000 known species.
- Distribution:
- They are globally distributed, from the tropics, where they are most numerous and varied, to the boreal forestsof Siberia and North America.
- They are also found throughout the Southern Hemisphere, with the exception of Antarctica.
- India is highly diverse, with more than 500 known species.
- Habitat: They are found in a variety of habitats, such as freshwater environments like ponds, rivers, and lakes, and are typically associated with bodies of water during their larval stage.
- Features:
- Many characteristics distinguish Odonata from other groups of insects: minute antennae, extremely large eyes (filling most of the head), two pairs of transparent membranous wings with many small veins, a long slender abdomen, and an aquatic larval stage (nymph).
- The abdomen is almost always longer than any of the wings.
- More than 80% of their brain is devoted to analysing visual information.
- Large, active by day, and often strikingly coloured, they are usually seen flying near water.
- Their mouths have been adapted for biting, making them efficient hunters.
- Adult odonates are voracious predators, as are the aquatic larvae.
Key Facts about Mudumalai Tiger Reserve:
- Location:
- It is located in the Nilgiris District of Tamil Nadu, spread over 321 sq. km. at the tri-junction of three states, viz, Karnataka, Kerala, and Tamil Nadu.
- It lies on the Northeastern and Northwestern slopes of the Nilgiri Hills,which are part of the Western Ghats.
- It is part of the Nilgiris Biosphere Reserve, the first Biosphere Reserve in India.
- It has a common boundary with Wayanad Wildlife Sanctuary(Kerala) on the West, Bandipur Tiger Reserve (Karnataka) on the North, the Nilgiris North Division on the South and East, and Gudalur Forest Division on the South West.
- The name Mudumalai means ” the ancient hill range”. Indeed, it is as old as 65 million years when the Western Ghats were formed.
- Terrain: The terrain is undulating,with the elevation ranging from 960m to 1266m.
- Habitat: A variety of habitats ranging from tropical evergreen forest, moist deciduous forest, moist teak forest, dry teak forest, secondary grasslands, and swamps are found here.
- Flora:
- It has tall grasses, commonly referred to as “Elephant Grass”, bamboo of the giant variety, and valuable timber species like Teak, Rosewood, etc.
- It has wild relatives of cultivated plants: wild rice, ginger, turmeric, cinnamon, etc.
- Fauna: Includes Tiger, Elephant, Indian Gaur, Panther, Sambar, Spotted Deer, Barking Deer, Mouse Deer, Common Langur, Malabar Giant Squirrel, Mangoose, and Hyena, among others.
- The recent Oscar-winning ‘Elephant Whisperers’was filmed at the Theppakadu Elephant Camp, located inside the Mudumalai Tiger Reserve.
About the Dead Sea:
- The Dead Sea, also called the Salt Sea, is a salt lake bordering Jordan to the east and Israel to the west.
- However, the western shore’s southern half belongs to Israel, while the shore’s northern half is in the West Bank, an area claimed by both Israel and Palestine.
- It lies to the east of the Mediterranean Seaand south of the Sea of Galilee.
- It lies in the Jordan Rift Valley and is fed mainly by the Jordan River, which enters the lake from the north.
- It does not have an outlet, and so it loses its water mainly through evaporation.
- Its surface and shores are 427 metres below sea level, Earth's lowest elevation on land.
- It is 306 m deep, the deepest hypersaline lake in the world.
- With 2% salinity (in 2011), it is also one of the world's saltiest bodies of water, though Lake Vanda in Antarctica (35%), Lake Assal (Djibouti) (34.8%), Lagoon Garabogazköl in the Caspian Sea (up to 35%), and some hypersaline ponds and lakes of the McMurdo Dry Valleys in Antarctica (such as Don Juan Pond (44%)) have reported higher salinities.
- It is almost ten times saltier than ordinary
- This salinity makes for a harsh environment in which animals cannot flourish, hence its name.
- It is 50 kilometres long and 15 kilometres wide at its widest point.
- The Dead Sea seawater has a density of 1.240 kg/L, which makes swimming in its waters similar to floating.
About the New epiphytic plant:
- It is named Lysionotus
- Range: The native range of the genus Lysionotus is the Himalayas to Japan and Indo-China, and about 50% of the species found are endemic.
- Species of the genus are mostly epiphytic, lithophytic, or terrestrial evergreen erect or climbing subshrubs.
- The new species bears thick leaves and attractive purple flowers.
- The conservation status of this new species is provisionally assessed as ‘Critically Endangered’, in accordance with the International Union for Conservation of Nature (IUCN) Red List.
- It is epiphytic in nature and grows another plant.
- Epiphytic plants are mostly found in tropical and subtropical
Key Facts about the Botanical Survey of India
- It is the apex taxonomic research organisation of the country, which is under the Ministry of Environment, Forest & Climate Change, Government of India.
- It was established on 13th February 1890 under the direction of Sir George King.
- The mandate of the organisation has been broadened to includebiosystematics research, floristic studies, documentation, databasing of National Botanical collection, digitization of herbarium specimens,
- Headquarters: Kolkata
About Helicobacter pylori:
- It is a common type of bacteria that grows in the digestive tractand tends to attack the stomach lining.
- It is adapted to live in the harsh, acidic environment of the stomach.
- This infection usually happens during childhood.
- Its infections are usually harmless, but they’re responsible for most ulcersin the stomach and small intestine.
- This bacterium can change the environment around it and reduce the acidity, so it can survive more easily.
- The spiral shape of H. pylori allows it to penetrate the stomach lining, where it’s protected by mucus and the body’s immune cells can’t reach it.
- Most people with H. pylori infections will never have any signs or symptoms.
- When signs or symptoms do occur with H. pylori infection, they are typically related to gastritis or a peptic ulcer and may include:
- An ache or burning pain in your stomach (abdomen)
- Stomach pain may be worse when your stomach is empty
- Nausea, Loss of appetite, unintentional weight loss,
- Treatment
- It typically involves a combination of antibiotics and a proton-pump inhibitor (a drug that reduces your stomach acid) for up to 14 days.
- This treatment is sometimes referred to as triple therapy.
About Vitrimer:
- These represent a relatively recent category of plastics known for their impressive strength at low temperatures.
- They also possess the unique ability to be reshaped numerous times when exposed to higher temperatures.
- It is also partially biodegradable.
- Nonetheless, they do have a notable drawback - extreme brittleness, as they cannot be stretched far before breaking.
- To address this issue, researchers introduced a molecule called polyrotaxane into the plastic synthesis process, resulting in a novel plastic variant they've dubbed VPR, an abbreviation for "vitrimer incorporated with polyrotaxane."
- VPR is over five times as resistant to breaking as a typical epoxy resin vitrimer.
- At a high temperature of around 150 degrees Celsius, VPR starts to recombine, allowing the material to take on different forms.
- It also repairs itself 15 times as fast, can recover its original memorised shape twice as fast, and can be chemically recycled 10 times as fast as the typical vitrimer.
- It even biodegrades safely in a marine environment, which is new for this material.
About Environmental DNA:
- eDNA is DNA shed by all organisms into their surroundings through natural processes during their lifetime or after death.
- Source: It originates from cellular material shed by organisms (via the skin, excrement, etc.) into aquatic or terrestrial environments that can be sampled and monitored using new molecular methods.
Key points about the new method
- The new non-invasive method can assess the total biodiversity of any ecosystem by sequencing the DNA fragments found in environmental samples such as water, soil, or air.
- This method can detect all kinds of organisms, including viruses, bacteria, archaea, and eukaryotes such as fungi, plants, insects, birds, fish and other animals.
- This method requires just a few litres of water sample without any direct capture or counting of species.
- The researchers filter out eDNA from environmental samples, read their sequences, and thus identify the source of the eDNA.
Significance
- Such methodology is important for the early detection of invasive species as well as the detection of rare and cryptic species.
- eDNA can also reveal the presence of human remains
- The new method is cheaper, faster, and highly scalable to large freshwater and marine ecosystems, which can help in monitoring and conserving the rich biodiversity of our country.
About Pancorius Sebastiani:
- The new species belongs to the jumping spider genus Pancorius Simon, 1902, and the Salticidae
- It has been named Pancorius Sebastianiafter the late spider taxonomist P.A. Sebastian.
- The Pancorius genus of Asian jumping spiders is primarily distributed in southeast Asia.
- Its distribution was hitherto limited to the eastern and northeastern regions of
- The new species is the first to be reported from the south.
- Features
- The males and females of Pancorius Sebastianiexhibit a reddish brown carapace, yellowish abdomen with black patches, and chevron-shaped markings posteromedially.
- An analysis of Salticidae species in the country shows that only two states, West Bengal and Tamil Nadu, have reported high numbers, while the others, including those harbouring biodiversity hotspots like the Western Ghats and northeastern India, have relatively few numbers of species.
Key facts about the Shendurney Wildlife Sanctuary
- It is a protected area located in the Western Ghats of India, in the Kollam district of
- This sanctuary derives its name from Chenkurinji(Gluta travancorica), a species endemic to this region.
- It comes under the control of Agasthyamalai Biosphere Reserve.
- Flora:Tropical evergreen and semi-evergreen forests cover a major area of the sanctuary.
- Fauna:Includes tigers, gaurs, elephants, sambar deers, sloth bears, Malabar Raven, Malabar banded swallowtail, Red-disc Bushbrown, etc