Note4Students
From UPSC perspective, the following things are important :
Prelims level: Archimedes Principle
Mains level: NA
Recently, Archimedes Principle was used in Jharkhand to rescue baby elephant stuck in a well. The rescue team filled the well with water using motorized pipes, after which the struggling elephant floated to the top and was able to climb out through a ramp placed for it.
What is the ‘Archimedes Principle’?
- In physics, the Archimedes Principle refers to the law of buoyancy (the ability or tendency of something to float in water or other fluids).
- According to the principle, when an object is completely or partially submerged in a fluid, whether gas or liquid, it is acted upon by an upward force (buoyancy) equal to the weight of the fluid it has displaced.
- The force acting downward on the object is the weight of the object. The upward force is the one given by the Archimedes Principle.
- The difference between the two forces is the net force acting on the object.
- If the buoyant force is more than the weight, the object rises; if it is less, the object sinks.
- If the net force is zero, the object remains in place, and neither rises nor sinks.
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: Iconic sites mentioned in the newscard
Mains level: Ancient Indian architecture
The Union Govt. has proposed to set up an Indian Institute of Heritage and Conservation under the Ministry of Culture, and develop five archaeological sites as “iconic sites” with onsite museums in Rakhigarhi (Haryana), Hastinapur (Uttar Pradesh), Sivsagar (Assam), Dholavira (Gujarat) and Adichanallur (Tamil Nadu).
Rakhigarhi
- Rakhigarhi in Haryana’s Hissar district is one of the most prominent and largest sites of the Harappan civilization.
- It is one among the five known townships of the Harappan civilization in the Indian subcontinent.
- In one of the excavations, the skeletal remains of a couple were discovered.
- Interestingly, of the 62 graves discovered in Rakhigarhi, only this particular grave consisted of more than one skeletal remains and of individuals of the opposite sex together.
Hastinapur
- Excavations at Hastinapur, in Meerut district of Uttar Pradesh, were led by Dr B B Lal, who was at the time Superintendent of the Excavations Branch of the ASI.
- Hastinapur finds mention in the Mahabharata and the Puranas.
- One of the most significant discoveries made at this site was of the “new ceramic industry”, which was named the Painted Grey Ware, which as per the report represented the relics of the early Indo-Aryans.
- The sites of Hastinapur, Mathura, Kurukshetra, Barnawa, etc., are identifiable with those of the same name mentioned in the Mahabharata.
- If that be so, the Painted Grey Ware would be associated with the early settlers on these sites, viz. The Pauravas, Panchalas, etc., who formed a part of the early Aryan stock in India.
- Such an association may also explain the synchronism between the appearance of the Painted Grey Ware in the Ghaggar-Sutlej valleys and the probable date of the arrival of the Aryans in that area.”
Sivasagar
- In Sivasagar, excavations at the Karenghar (Talatalghar) complex between 2000 and 2003 led to the discovery of buried structures in the north-western and north-eastern side of the complex.
- Among the structural remains found at the site were ceramic assemblages including vases, vessels, dishes, and bowls, etc. Terracotta smoking pipes were also found.
- Another excavation site in Sivasagar district is the Garhgaon Raja’s palace. Excavation at this site was conducted during 2007-2008.
- A burnt-brick wall running in north-south orientation was found, along with the remains of two huge circular wooden posts.
Dholavira
- Dholavira in Gujarat is located in the Khadir island of the Rann of Kutch, and like Rakhigarhi is one of the sites where the remains of the Harappan civilization have been found.
- Dholavira is unique because remains of a complete water system have been found here.
- The people who lived there for an estimated 1,200 years during the Harappan civilization are noted for their water conservation system using rainwater harvesting techniques in an otherwise parched landscape.
Adichnallur
- Adichnallur lies in the Thoothukudi district of Tamil Nadu.
- The urn-burial site was first brought to light during a “haphazard excavation” by a German archaeologist in 1876. Following this, an Englishman Alexander Rae excavated the site between 1889 and 1905.
- Over the years, the site has gained attention because of three important findings: the discovery of an ancient Tamil-Brahmi script on the inside of an urn containing a full human skeleton, a fragment of a broken earthenware, and the remains of living quarters.
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: Read the attached story
Mains level: Not Much
Finance Minister has quoted four poets in her Budget speech: Pt. Dinanath Nadim, Avvaiyar, Thiruvalluvar and Kalidas, a sweep from Tamil Nadu to Kashmir, from ancient to contenporary India.
Dinanath Nadim
- The Kashmiri nationalist poet Dinanath Nadim was at the centre of Kashmir’s progressive movement, especially in the 1930s, 40s and 50s.
- Nadim was born in 1916, and passed away in 1988. Nadim wrote in Kashmiri, Hindi and Urdu, and inspired a powerful tradition of Kashmiri poetry.
- Nadim received the Sahitya Akademi award in 1986 for his opera Shuhul Kull (The Shady Tree).
- Among his other well known works are Vitasta (Jhelum River), Safar Taa Shehjaar (The Journey And The Shade), Heemaal Taa Naaegrai (Heemaal and Naagraaj), and Bombur Taa Yamberzal (The Bumble Bee And The Narcissus Flower).
Avvaiyar
- Avvaiyar translates to “Respected Woman”, and the title was used by several woman poets who contributed to Tamil literature during different periods of time.
- In the Budget’s section on “Aspirational India”, Sitharaman said, “Our government shall encourage balanced use of all kinds of fertilizers including the traditional organic and other innovative fertilizers.
- This is a necessary step to change the prevailing incentive regime, which encourages excessive use of chemical fertilisers.”
- She quoted from Aaathichoodi’s verse 81 which translate to “first tend to till one’s land and then eat. One must eat only after work.”
Thiruvalluvar
- Thiruvalluvar is fondly referred to as Valluvar by Tamils. His ‘Tirukkural’, a collection of 1,330 couplets (‘kurals’ in Tamil), are an essential part of every Tamil household.
- It holds importance in the same way the Bhagavad Gita or the Ramayana are in traditional North Indian Hindu households.
- He is an essential anchor for Tamils in tracing their cultural roots; Tamils are taught to learn his couplets word-for-word, and to follow his teachings in their day-to-day living.
- FM quoted Thiruvalluvar: “Pini Inmai Selvam Vilaivu Inbam Emam Ani Enba”, which loosely translates to having the “five jewels” required for a country that is without illness, with wealth, with good crops, with happiness, as well as safety and security.
Kalidas
- Kalidas, the legendary Sanskrit scholar, is believed to have lived during the middle of the fourth and early fifth centuries AD, during the reigns of Chandragupta II Vikramaditya and Kumaragupta.
- Raghuvamsa, from which FM quoted, is one of two long epic poems written by Kalidas.
- She mentioned the 18th verse: “Surya, the Sun, collects vapour from little drops of water. So does the King. They give back copiously. They collect only for people’s wellbeing.”
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: Yellow rust, Pusa Yashasvi
Mains level: Not Much
Yellow Rust was detected in wheat crops in parts of Punjab and Haryana.
Yellow Rust
- Yellow Rust disease appears as yellow stripes of powder or dust on leaves and leaf sheaths of the wheat crop. This yellow powder comes out on clothing or fingers when touched.
- This occurs when the rust colonies in the leaves drain the carbohydrates from the plant and reduce the green leaf area.
- In India, it is a major disease in the Northern Hill Zone and the North-Western Plain Zone and spreads easily during the onset of cool weather and when wind conditions are favourable.
- Rain, dew and fog favour the disease’s development.
Impact of the disease
- The disease can spread rapidly under congenial conditions and affects crop development, and eventually the yield.
- Yield due to the disease can affected by between 5 and 30 per cent.
- According to the IIWBR advisory, if farmers observe yellow rust in patches in their wheat fields, they should spray fungicides.
Other facts: Pusa Yashasvi
- Last year, a new variety of wheat called HD-3226 or Pusa Yashasvi was released by the Indian Agricultural Research Institute.
- It had higher levels of resistance against major rust fungi such as the yellow/stripe, brown/leaf and black/stem.
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: PCI
Mains level: Terms of reference for PCI
The Union government is likely to announce the setting up of a Plantation Corporation of India in the upcoming budget.
Plantation Corporation of India
- The PCI will subsume all afforestation-related schemes currently underway in India including the Green India Mission, National Afforestation Programme and compensatory afforestation.
- The corporation will use Compensatory Afforestation Fund (CAF) money to undertake the plantations and investment will also come from the global pension fund.
- CAF is a huge corpus of money collected from projects proponents for diverting forest land to be used for non-forestry activity.
Issues with PCI
- Critics have raised concerns over the move’s impact on the federal structure of forest governance in the country.
- While forests are a concurrent subject, land-related issues are the responsibility of the states.
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: Fruit Train
Mains level: Logistics support for horticulture products
A ‘fruit train’, said to be the first of its kind in India, was flagged off from Tadipatri Railway Station in Anantapur district of Andhra.
About the fruit train
- This is the first time in India that an entire train is being sent to the gateway port (JNPT) for export.
- This helps save both time and fuel as 150 trucks would have been required to send a consignment of this size by road to JNPT, which is over 900 km away, before the temperature-controlled containers are loaded on ships.
- The bananas are being exported under the brand name ‘Happy Bananas’.
- Farmers from Putlur region in Anantapur and Pulivendula in Kadapa district are exporting ‘Green Cavendish’ bananas to many international markets.
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: Nagoba Jatara
Mains level: Not Much
The month long Nagoba Jatara recently concluded in Adilabad dist. of AP.
Nagoba Jatara
- Nagoba Jatara is a tribal festival held in Keslapur village, Inderavelly Mandal[1] Adilabad district, Telangana, India.
- It is the second biggest tribal carnival and celebrated by Mesaram clan of Gond tribes for 10 days.
- Tribal people from Maharashtra, Chhattisgarh, Orissa and Madhya Pradesh belonging to the Mesram clan offer prayers at the festival.
- It starts in pushya masam. A ceremony of ‘bheting’ is it’s integral part where the new brides are introduced to the clan god during first jatra afer their marriage
- The few hundred Raj Gond and Pardhan Adivasis, men clad in pure white dhoti-kurta and the pagdi headgear and women in the traditional colourful nau-vari Maharashtrian style saree.
- The temple for which a new structure is coming up is dedicated to the serpent god, known as Shri Shek to the aboriginal people, and is the centre of all activities during the week long festivities.
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From UPSC perspective, the following things are important :
Prelims level: Beating Retreat Ceremony
Mains level: Not Much
The Beating Retreat ceremony recently took place at Vijay Chowk. The ceremony, which takes place on January 29 every year, marks the culmination of the four-day Republic Day celebrations.
What is the Beating Retreat function?
- ‘Beating Retreat’ marks a centuries old military tradition, when the troops ceased fighting, sheathed their arms and withdrew from the battlefield and returned to the camps at sunset at the sounding of the Retreat.
- The military tradition began in 17th century England, when King James II ordered his troops to beat drums, lower flags and organise a parade to announce the end of a day of combat.
- The ceremony was then called ‘watch setting’ and took place at sunset after firing a single round from the evening gun.
- The ceremony is currently held by Armed Forces in the UK, US, Canada, New Zealand, Australia, and India, among others.
How did it begin in India?
- Beating the Retreat’ has emerged as an event of national pride when the Colours and Standards are paraded.
- The ceremony traces its origins to the early 1950s when Major Roberts of the Indian Army indigenously developed the unique ceremony of display by the massed bands.
- Section D (Ceremonials) at the Ministry of Defence conducts the event.
- The ceremony consists of musical performances by the bands, who each year play Indian and western tunes.
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: No-fly List
Mains level: Not Much
Four airlines in India have banned a stand-up comedian from taking flights after he allegedly heckled television news anchor on-flight.
No-Fly List
- In 2017, the government issued rules for preventing disruptive behaviour by air travellers and laid down guidelines for a no-fly list.
- As per the rules, a complaint of unruly behaviour needs to be filed by the pilot-in-command, and this is to be probed by an internal committee to be set up by the airline.
- During the period of pendency of the inquiry, the rules empower the concerned airline to impose a ban on the passenger.
- The committee is to decide the matter within 30 days, and also specify the ban duration.
- Any aggrieved person, upon receipt of communication of a ban from the airline, may appeal within 60 days from the date of issue of the order, to an Appellate Committee constituted by the Ministry of Civil Aviation.
Three categories of unruly behaviour:
- Level 1 refers to behaviour that is verbally unruly, and calls for debarment up to three months;
- Level 2 indicates physical unruliness and can lead to the passenger being debarred from flying for up to six months;
- Level 3 indicates life-threatening behaviour for which the debarment would be for a minimum of two years.
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: HADR, Op Vanila
Mains level: NA
Indian navy will perform HADR operations in Madagascar under ‘Operation Vanilla’.
Operation Vanilla
- Indian Navy Ship Airavat whilst mission deployed in the Southern Indian Ocean has been diverted to Antsiranana based on request recieved from Madagascar.
- The ship will undertake Humanitarian Assistance and Disaster Relief (HADR) mission as part of ‘Operation Vanilla’.
- It has been launched to provide assistance to the affected population of Madagascar post devastation caused by Cyclone Diane.
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: Oslo Peace Accord, West Bank
Mains level: Palestine-Israel conflicts
Palestinian officials threatened to withdraw from key provisions of the Oslo Accords, which define relations with Israel, if U.S. President Donald Trump announces his Middle East peace plan next week.
The Oslo Peace Accord
- The Oslo Accords were a landmark moment in the pursuit of peace in the Middle East.
- Actually a set of two separate agreements signed by the government of Israel and the leadership of the Palestine Liberation Organization (PLO)—the militant organization established in 1964 to create a Palestinian state.
- The negotiations between Israel and the PLO that ultimately led to the Oslo Accords began, in secret, in Oslo, Norway, in 1993.
- The Oslo Accords were ratified in Washington, D.C., in 1993 (Oslo I) and in Taba, Egypt, in 1995 (Oslo II).
- Sometimes called Oslo II, the interim agreement set out the scope of Palestinian autonomy in the West Bank and Gaza.
- The interim pact was only supposed to last five years while a permanent agreement was finalised but it has tacitly been rolled over for more than two decades.
A final nail in the coffin
- World powers have long agreed that Jerusalem’s fate should be settled through negotiations between Israel and the Palestinians.
- The Palestinians see east Jerusalem as the capital of their future state and believe Trump’s plan buries the two-state solution that has been for decades the cornerstone of international Middle East diplomacy.
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: Natrialba Swarupiae, Sambhar Lake
Mains level: Not Much
- Scientists at the National Centre for Microbial Resource — National Centre for Cell Science (NCMR-NCCS) in Pune have reported a new archaeon (a kind of microorganism), which they discovered in Sambhar Salt Lake in Rajasthan.
- The new archaeon has been named Natrialba swarupiae, after Dr Renu Swarup, secretary, Department of Biotechnology, for her initiative in supporting microbial diversity studies in the country.
Archaea
- Archaea (singular archaeon) are a primitive group of microorganisms that thrive in extreme habitats such as hot springs, cold deserts and hypersaline lakes.
- These slow-growing organisms are also present in the human gut, and have a potential relationship with human health.
- They are known for producing antimicrobial molecules, and for anti-oxidant activity with applications in eco-friendly waste-water treatment.
- Archaea are extremely difficult to culture due to challenges in providing natural conditions in a laboratory setting.
- As archaea are relatively poorly studied, very little is known about how archaea behave in the human body.
- The organism has potential gene clusters that helps maintain the metabolism of the archaea to survive in extreme harsh conditions.
Search and discovery
- Sambhar Lake has been poorly studied for microbial ecology studies.
- With a salt production of 0.2 million tonnes per annum, it is also a hypersaline ecosystem which provides an opportunity for microbial ecologists to understand organisms that thrive in such concentrations.
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: Specialized Supervisory and Regulatory Cadre (SSRC)
Mains level: Governance of RBI
The RBI has decided to recruit 35% of the specialised supervisory and regulatory cadre from the market while the remaining 65% will be recruited via internal promotions.
Specialized Supervisory and Regulatory Cadre (SSRC)
- The SSRC will comprise officers in Grade B to Executive Director level.
- In Nov. last year RBI decided to reorganize its regulation and supervision departments.
- It merged the three regulatory departments (department of banking, non-banking and cooperative bank) into one and did likewise for the three supervisory departments.
- As a result, there is only one supervisory department which looks after supervision of banks, NBFCs and cooperative banks and only one regulatory department for these three.
- The move is aimed at dealing more effectively with potential systemic risk that could come about due to possible supervisory arbitrage and information asymmetry.
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: Vyoma Mitra
Mains level: Various functions of Vyoma Mitra in ISRO's unmanned missions
ISRO unveiled its first ‘woman’ astronaut during the event ‘Human Spaceflight and Exploration’.
Vyom Mitra
- The AI-based robotic system is being developed at a robotics lab at the VSSC in Thiruvananthapuram.
- Vyom Mitra will be used for an unmanned flight of ISRO’s GSLV III rocket in December 2020, which, along with a second unmanned flight in July 2021.
- This will serve as the test of ISRO’s preparedness for its maiden manned space mission, Gaganyaan, being targeted for 2022 to mark 75 years of India’s independence.
Functions of the humanoid
- Vyommitra, equipped with a head, two arms and a torso, is built to mimic crew activity inside the crew module of Gaganyaan.
- Attaining launch and orbital postures, responding to the environment, generating warnings, replacing carbon dioxide canisters, operating switches, monitoring of the crew module, receiving voice commands, responding via speech (bilingual) are among its functions listed.
- It will have a human-like face, with lips synchronised for movement to mimic speech.
- Once it is fully developed, Vyommitra will be able to use equipment on board the spacecraft’s crew module, like safety mechanisms and switches, as well as receive and act on commands sent from ground stations.
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: ‘Blue Corner’ notice
Mains level: Cooperation measures for International policing
Interpol has issued a Blue Corner notice to help locate an infamous fugitive self-styled godman weeks after the Gujarat Police sought the agency’s intervention for this.
‘Blue Corner’ notice
- According to the Interpol website, “Notices are international requests for cooperation or alerts allowing police in member countries to share critical crime-related information.”
- There are seven types of notices — Red Notice, Yellow Notice, Blue Notice, Black Notice, Green Notice, Orange Notice, and Purple Notice.
- The Blue Notice is issued to “collect additional information about a person’s identity, location or activities in relation to a crime.”
Blue notices a/c to CBI
- The Central Bureau of Investigation (CBI) website refers to Blue Notices as ‘B Series (Blue) Notices’.
- It says, “The ‘B’ series notices are also called ‘enquiry notices’ and may be issued in order to have someone’s identity verified; to obtain particulars of a person’s criminal record; to locate someone who is missing or is an identified or unidentified international criminal or is wanted for a violation of ordinary criminal law and whose extradition may be requested.”
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From UPSC perspective, the following things are important :
Prelims level: InvITs and REITs
Mains level: Not Much
Markets regulator SEBI has put in place a framework for the rights issue of units by listed REIT and InvITs.
What are InvITs and REITs?
Infrastructure Investment Trusts (InvIT)
- An Infrastructure Investment Trust (InvITs) is like a mutual fund, which enables direct investment of small amounts of money from possible individual/institutional investors in infrastructure to earn a small portion of the income as return.
- InvITs work like mutual funds or real estate investment trusts (REITs) in features.
- InvITs can be treated as the modified version of REITs designed to suit the specific circumstances of the infrastructure sector.
- They are similar to REIT but invest in infrastructure projects such as roads or highways which take some time to generate steady cash flows.
Real Estate Investment Trusts (REIT)
- A REIT is roughly like a mutual fund that invests in real estate although the similarity doesn’t go much further.
- The basic deal on REITs is that you own a share of property, and so an appropriate share of the income from it will come to you, after deducting an appropriate share of expenses.
- Essentially, it’s like a group of people pooling their money together and buying real estate except that it’s on a large scale and is regulated.
- The obvious pitch for a REIT is that it enables individuals to generate income and capital appreciation with money that is a small fraction of what would be required to buy an entire property.
- However, the resemblance to either mutual funds or to owning property ends there.
- According to Indian regulation on REITs, these are meant to primarily own finished and rented out commercial properties –– 80 per cent of the investments must be in such assets. That excludes a real estate that is under development.
Why need InvITs and REITs?
- Infrastructure and real estate are the two most critical sectors in any developing economy.
- A well-developed infrastructural set-up propels the overall development of a country.
- It also facilitates a steady inflow of private and foreign investments, and thereby augments the capital base available for the growth of key sectors in an economy, as well as its own growth, in a sustained manner.
- Given the importance of these two sectors in the country, and the paucity of public funds available to stimulate their growth, it is imperative that additional channels of financing are put in place.
What did SEBI rule?
- SEBI said the issuer will have to disclose objects of the issue, related-party transactions, valuation, financial details, review of credit rating and grievance redressal mechanism in the placement document.
- The SEBI had first notified REITs and InvIT Regulations in 2014, allowing setting up and listing of such trusts which are popular in some advanced markets.
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: Warren Hastings
Mains level: Read the attached story
Donald Trump’s impeachment trial started in the US Senate. A precedent being discussed is that of the Warren Hastings case — the famous failed attempt by the British Parliament to impeach India’s first governor-general.
Warren Hastings
- Warren Hastings, the first governor-general of Bengal (and the first de facto Governor-General of India), is considered among the most significant colonial administrators to have ruled India.
- First as the governor of Bengal (1772-1774) and then as Governor-General (1774-1785), Hastings strengthened British rule in India and made profound changes in administration.
- Hastings’s conduct while in office was called into question after he returned to Britain in 1785, most prominently by Edmund Burke, the noted British parliamentarian and philosopher.
What was his impeachment case?
- In 1786, impeachment proceedings were initiated against Hastings, probing his alleged mismanagement, mistreatment of natives, and personal corruption while in India.
- William Pitt, the then British Prime Minister, first defended Hastings, but then joined the chorus against him.
- Hastings’s argued that ‘Western’ standards of legality could not be applied in the East.
- But Burke insisted that under the Law of Nature, people in India were entitled to the same protection as those in Britain.
- In 1795, however, the House of Lords acquitted Hastings, and the impeachment failed.
- Burke warned that such a verdict would live in “perpetual infamy”, and the trial gave rise to a wider debate on the role of the East India Company in India.
Back2Basics
Warren Hastings and his major works
From 1772, Warren Hastings served as Governor-General of Fort Williams and the regulating act was passed after his arrival.
Important events under his rule :
- Hastings abolished the Dual System that had been established by Robert Clive. In the Dual System, the company had Diwani rights (rights to collect revenue) and the Nizam or Indian chiefs had the administrative authority.
- The judicial powers of the Zamindars were abolished. Civil and criminal courts were established. Two appellate courts were established at Calcutta, one for civil (Sadar Diwani Adalat) and one for criminal (Sadar Nizamat Adalat) cases.
- Hastings abolished the system of dastaks which were misused by company officials and traders earlier.
- He implemented several reforms in all walks of administration. The Regulating Act 1773 and Pitts India Act, 1784 were important acts passed during his tenure.
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: Coronavirus, Pneumonia
Mains level: Underlying threats and India's preparedness against the virus
Chinese scientists have confirmed can spread between human beings.
Corona Virus
- Corona viruses are large family of viruses, which cause illnesses to people and also circulate in animals including camels, cats and bats.
- They cause illness ranging from the common cold to more severe diseases such as Middle East Respiratory Syndrome and Severe Acute Respiratory Syndrome.
- 2019-nCoV is a new strain that has not been previously identified in humans.
- Much remains to be understood about the new coronavirus, which was first identified in China earlier this month.
- Not enough is known about 2019-nCoV to draw definitive conclusions about how it is transmitted, clinical features of disease, or the extent to which it has spread. The source also remains unknown.
Why is it called the Wuhan Virus?
- The first cases emerged in Wuhan in central China’s Hubei province.
- On December 31 last year, authorities confirmed that a large number of patients with unexplained pneumonia were admitted in hospitals in the city.
Symptoms of infection
- According to the WHO, common signs include fever, cough, and shortness of breath. Serious infections can lead to pneumonia, kidney failure, and death.
- Although human-to-human transmission has now been confirmed, the WHO says animals are the outbreak’s likely primary source. It is not known yet which animals are responsible.
- To prevent the spread of all respiratory infections, the WHO in general asks people to cover their mouths and noses when coughing or sneezing, and to frequently wash their hands.
- Direct contact with farm or wild animals should be avoided — similar outbreaks in the past, like the Severe Acute Respiratory Syndrome (SARS) emerged from markets where people were in contact with live animals.
Why is there concern around the world?
- People see a similarity with the SARS outbreak that infected over 8,000 people and killed around 775 in more than 35 countries worldwide in 2002-03.
- SARS too, was caused by a mystery coronavirus, and started in China.
- The source of the virus remained unknown for 15 years, until Chinese scientists in 2017 traced it back to a colony of horseshoe bats living in remote cave in Yunnan province.
- The virus was carried by civet cats which are sold in markets in China.
- Fears that SARS could reappear and memories of China misleading the rest of the world on the extent and seriousness of the outbreak have not gone away.
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From UPSC perspective, the following things are important :
Prelims level: Xenobot
Mains level: Utility of stem cells in bio-robotics
Scientists in the US have created the world’s first “living machines” — tiny robots built from the cells of the African clawed frog that can move around on their own.
Xenobot
- Scientists have developed living robots from frogs stem cells.
- They have named this millimetre-wide robots “xenobots” — after the species of aquatic frog found across sub-Saharan Africa from Nigeria and Sudan to South Africa, Xenopus laevis.
- Scientists have repurposed living cells scraped from frog embryos and assembled them into entirely new life-forms.
- The xenobots can move toward a target, perhaps pick up a payload (like a medicine that needs to be carried to a specific place inside a patient) — and heal themselves after being cut.
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: Irrawaddy Dolphins
Mains level: Not Much
146 Irrawaddy dolphins were recently sighted in Chilika Lake of Odisha. The lake has highest single lagoon population of the aquatic mammal in the world.
Irrawaddy Dolphins
- IUCN Status: Endangered
- Scientific Name: Orcaella brevirostris
- Habitats: Lakes, Rivers, Estuaries, and Coasts
- The Irrawaddy dolphin is a euryhaline species of oceanic dolphin found in discontinuous subpopulations near sea coasts and in estuaries and rivers in parts of the Bay of Bengal and Southeast Asia.
- They are also found in coastal areas in South and Southeast Asia, and in three rivers: the Ayeyarwady (Myanmar), the Mahakam (Indonesian Borneo) and the Mekong.
- The total population of these aquatic mammals in the world is estimated to be less than 7,500.
- Of these, more than 6,000 Irrawaddy dolphins have been reported from Bangladesh, while the dolphin distribution in Chilika is considered to be the highest single lagoon population.
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