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Subject: Science and Technology

  • Corona 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.

  • Xenobot

    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.

  • IVF of White Rhinos

    Researchers had created another embryo — the third — of the nearly extinct northern white rhino. This is seen as a remarkable success in an ongoing global mission to keep the species from going extinct.

    What is IVF?

    • IVF is a type of assisted reproductive technology used for infertility treatment and gestational surrogacy.
    • A fertilised egg may be implanted into a surrogate’s uterus, and the resulting child is genetically unrelated to the surrogate.
    • Some countries have banned or otherwise regulate the availability of IVF treatment, giving rise to fertility tourism.
    • Restrictions on the availability of IVF include costs and age, in order for a woman to carry a healthy pregnancy to term.
    • IVF is generally not used until less invasive or expensive options have failed or been determined unlikely to work.

    IVF process

    • In vitro fertilisation (IVF) is a process of fertilization where an egg is combined with sperm outside the body, in vitro (“in glass”).
    • The process involves monitoring and stimulating a female ovulatory process, removing an ovum or ova (egg or eggs) from the female ovaries and letting sperm fertilise them in a liquid in a laboratory.
    • After the fertilised egg (zygote) undergoes embryo culture for 2–6 days, it is implanted in the same or another female uterus, with the intention of establishing a successful pregnancy.

    Types of Rhinos

    • The northern white is one of the two subspecies of the white (or square-lipped) rhinoceros, which once roamed several African countries south of the Sahara.
    • The other subspecies, the southern white is, by contrast, the most numerous subspecies of rhino, and is found primarily in South Africa.
    • There is also the black (or hook-lipped) rhinoceros in Africa, which too, is fighting for survival, and at least three of whose subspecies are already extinct.
    • The Indian rhinoceros is different from its African cousins, most prominently in that it has only one horn.
    • There is also a Javan rhino, which too, has one horn, and a Sumatran rhino which, like the African rhinos, has two horns.

  • Drone Census

    India’s first drone census has seen only 2,500 Ownership Acknowledgment Numbers (OANs) being issued by the Ministry of Civil Aviation (MoCA) since five days of beginning.

    Drone Census

    • The MoCA had issued a notice providing a one-time opportunity for voluntary disclosure of all drones and operators starting from January 14.
    • The DGCA issued the Civil Aviation Requirements (CAR), Section 3 – Air Transport Series X, Part I, Issue I, dated August 27, 2018 regulates use of drones.
    • It provides the process for obtaining Unique Identification Number, Unmanned Aircraft Operator Permit (UAOP) and other operational requirements; there are drones that do not comply with the CAR.
    • If a drone is not enlisted by 5 p.m. on January 31, then it will most definitely be confiscated.
    • After January 31, only authorised retailers will be allowed to sell them after uploading buyers’ Know your Customer (KYC) and sale invoice, similar to the sale of mobile phones and cars.

    Why such move?

    • The exercise will give the government a picture of who owns what kind of drone in which part of the country.
    • It will help in making policy decisions that should ideally become the base for understanding the scale of operations.

  • [pib] Novel Corona Virus (nCoV)

    The Union Ministry of Health and Family Welfare has been closely monitoring the situation after the reports of 41 confirmed cases of novel Corona virus (nCoV) including one death from Wuhan, China, 2020.

    About Novel 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.

  • TrueNat

    The WHO has endorsed TrueNat, an Indian indigenous molecular diagnostic tool for tuberculosis (TB) diagnosis.

    TrueNat

    • The TrueNat TB test is a new molecular test that can diagnosis TB in one hour as well as testing for resistance to the drug rifampicin.
    • The TrueNat MTB and MTB Plus assays also show comparable accuracy to the TB-LAMP assay as replacement tests for sputum smear microscopy.
    • The data for TrueNat MTB-Rif shows similar accuracy to WHO-approved commercial line probe assays.
    • It is developed by the Goa-based Molbio Diagnostics.
    • The company was provided with technical assistance and resources by the Foundation for Innovative New Diagnostics (FIND) to help commercialise Truenat.
    • ICMR had assessed and validated the diagnostic tool. It has high diagnostic accuracy as initial test to diagnose TB.
    • It will be used as an initial test thus replacing sputum smear microscopy.

  • GSAT-30 successfully launched

    India’s first satellite of 2020, the GSAT-30 was successfully launched. The launch vehicle Ariane 5 VA-251 lifted off from Kourou Launch Base, French Guiana.

    GSAT-30 

    • GSAT-30 derives  its  heritage  from ISRO’s  earlier INSAT/GSAT  satellite  series  and  will  replace  INSAT-4A  in 
    • In the  days  ahead,  orbit-raising  manoeuvres  will  be  performed  to  place  the satellite  in  Geostationary  Orbit  (36,000  km  above  the  equator)  by  using  its  onboard  propulsion
    • During the  final  stages  of  its  orbit  raising  operations,  the  two  solar  arrays  and  the antenna  reflectors  of  GSAT-30  will  be
    • Following this,  the satellite will be  put in  its final orbital .     The satellite will  be  operational  after  the successful  completion  of  all in-orbit  tests.

    Utility of the satellite

    • GSAT-30 will provide  DTH  Television  Services, connectivity to  VSATs for  ATM,  Stock-exchange,  Television unlinking and Teleport  Services,  Digital  Satellite  News  Gathering  (DSNG)  and e-governance applications.
    • The satellite  will  also  be  used  for  bulk  data  transfer  for  a  host  of an emerging  telecommunication

  • [pib] Indian Digital Heritage (IDH) Initiative

     

    The Union Ministry of Culture and Tourism launched a month-long special exhibition titled Indian Heritage in Digital Space. This special exhibition showcases the adaptation and infusion of technologies being developed under the Indian Digital Heritage (IDH) initiative.

    Indian Digital Heritage (IDH)

    • This initiative is undertaken by the Department of Science and Technology (DST) in the cultural heritage domain of the country.
    • The exhibition demonstrates the outcome of two flagship projects viz., A digital mini-spectacle to showcase the glory of Hampi and Augmented Reality based interactions with physical models of monuments.
    • The goals of these projects are to create digital installations using 3D laser scan data, AR, holographic projections and 3D fabrication,to provide interactive and immersive experiences showcasing the glory of Hampi and five Indian monuments namely Kashi Vishwanath Temple, Varanasi; TajMahal, Agra; Sun Temple, Konark; Ramachandra Temple, Hampi ; and RaniKiVav, Patan .
    • These projections are driven by cutting-edge technologies such as 3D fabrication, Artificial Intelligence, Augmented, Virtual and Mixed Reality, Holographic Projections and Projection Mapping etc.

    ViRaasat

    A special installation named ‘ViRaasat’, consisting of a scaled-down 3D printed replica shall provide a mixed reality experience to visitors for selected monuments, using laser-scanning, 3D modelling and rendering, 3D printing, computer vision and spatial AR.

  • Classical languages in India

    Recently in a Marathi literary festival, a resolution was passed demanding its declaration as a ‘Classical’ language.

    ‘Classical’ languages in India

    Currently, six languages enjoy the ‘Classical’ status: Tamil (declared in 2004), Sanskrit (2005), Kannada (2008), Telugu (2008), Malayalam (2013), and Odia (2014).

    How are they classified?

    According to information provided by the Ministry of Culture in the Rajya Sabha in February 2014, the guidelines for declaring a language as ‘Classical’ are:

    • High antiquity of its early texts/recorded history over a period of 1500-2000 years;
    • A body of ancient literature/texts, which is considered a valuable heritage by generations of speakers;
    • The literary tradition be original and not borrowed from another speech community;
    • The classical language and literature being distinct from modern, there may also be a discontinuity between the classical language and its later forms or its offshoots.”

    How are the Classical languages promoted?

    The HRD Ministry noted the benefits it provides once a language is notified as a Classical language:

    • Two major annual international awards for scholars of eminence in classical Indian languages
    • A Centre of Excellence for studies in Classical Languages is set up
    • The University Grants Commission is requested to create, to start with at least in the Central Universities, a certain number of Professional Chairs for the Classical Languages so declared.

  • Six degrees of Endangerment of a Language

    Recently, The NY Times reported that the “near-extinct” Nepalese language Seke has just 700 speakers around the world. As per the Endangered Languages Project (ELP), there are roughly 201 endangered languages in India and about 70 in Nepal.

    The last year, 2019, was the International Year of Indigenous Languages, mandated by the UN.

    Nepal’s Seke language

    • According to the Endangered Language Alliance (ELA), Seke is one of the over 100 indigenous languages of Nepal.
    • The dialects from these villages differ substantially and are believed to have varying degrees of mutual intelligibility.
    • In recent years, Seke has been retreating in the face of Nepali, which is Nepal’s official language and is considered to be crucial for getting educational and employment opportunities outside villages.

    Degrees of endangerment

    UNESCO has six degrees of endangerment. These are:

    1. Safe, which are the languages spoken by all generations and their intergenerational transmission is uninterrupted;
    2. Vulnerable languages, which are spoken by most children but may be restricted to certain domains;
    3. Definitely endangered languages, which are no longer being learnt by children as their mother tongue.
    4. Severely endangered are languages spoken by grandparents and older generations, and while the parent generation may understand it, they may not speak it with the children or among themselves.
    5. Critically endangered languages are those of which the youngest speakers are the grandparents or older family members who may speak the language partially or infrequently and lastly,
    6. Extinct languages, of which no speakers are left.