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(6/6) 24 June 2018 The Hindu + Indian Express DNA
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Sumant Kumar
B.Tech NIT Allahabad. Scored 136 & 120 in UPSC Prelims. YouTube Channel "Crackers' IAS Academy". Telegram - CrackersIASAcademy

  1. Doppler radar ODoppler radar is an observational tool used for precisely monitoring and predicting severe weather events such as hailstorms, thunder storms, cyclones and tornados. Olt uses Doppler effect by bouncing microwave signal off desired target to OThis data helps in analysing object's motion by altered frequency of returned Olt mainly gives information about wind velocity and precipitation. produce velocity data. signal. Doppler radar has radius of 250 km and helps in issuing forecasts two-three hours prior to severe weather conditions. OIt can provide area specific rain and storm warnings which are disaster management and emergency response, aviation and related services. OIt can be used for wind speed measurements during cyclones and thunderstorms which is not possible in conventional weather radar.

  2. What are Biotoilets? The environment-friendly bio-toilets for passenger coaches were developed jointly by Indian Railways and Defence Research and Development Organisation (DRDO). In the bio-toilet fitted coaches, human waste is collected in bio digester tanks below the toilets and is decomposed by a consortium of anaerobic bacteria. By the process of hydrolysis, acetogenesis, acidogenesis and methanogenesis, the anaerobic bacteria converts human faecal matter into water and small amount of gases (including methane). Why in news? Indian railways aims to install human waste discharge free biotoilets in all its coaches and the same would be completed by September 2019. It will help in proving cleanliness and hygiene besides preventing corrosion of the tracks. It is part of the Swachh Bharat Mission.

  3. [TheHindu Page 14] How insects evolve immune- memory against bacterial infections Much like humans, insects too develop an immune-memory in response to infection. OIn humans, for instance, natural infection or vaccination can lead to the formation of important immunological memory in the human immune system OIn other words, once infected, the immune system becomes ready to deal with that particular antigen because of immune-memory For long, it has been a point of debate whether insects have such a memory that can protect them against future infections. Such a memory can evolve over generations in red flour beetles (Tribolium castaneum) infected with Bacillus thuringiensis (Bt)

  4. What are flexible microelectrodes? Microelectrodes can be used for direct measurement of electrical signals in the brain or heart, Microelectrode arrays have been around for a long time. o In their original form, they consist of hard materials such as silicon and are unusable in living cells. These applications require soft materials. o As existing methods make it difficult to affix electrodes on them, researchers in Munich, Germany, have managed to print electrodes directly on to several soft substrates such as gummy bear candies. o They have managed to etch a flexible microelectrode array, consisting of a large number of electrodes, which can detect voltage changes resulting from activity in neurons or muscle cells. o A key advantage of such microelectrodes is that as they are soft, they can fit better in tight spaces in the body and are less likely to trigger inflammation. o The researchers say that the technique could pave the way to creating new medical diagnostic tools.

  5. With reference to the Hamari Dharohar scheme, consider the following statements: 1. It aims to preserve rich culture and heritage of minority communities of India. 2. It will be implemented by Ministry of Minority Affairs in consultation with Ministry of Culture. Which of the statements given above is/are correct? (a) 1 only (b) 2 only (c) Both 1 and 2 (d) Neither 1 nor 2

  6. With reference to the Hamari "Hamari Dharohar" scheme aims to preserve rich culture and Dharohar scheme, consider the heritage of minority communities of India. The scheme will be following statements: 1. It aims to preserve rich culture communities under National Commission for Minorities Act 1992 and heritage of minority communities of India. 2. It will be implemented by Ministry of Minority Affairs in consultation with Ministry of Culture with the help of expert National consultation with Ministry of and International Knowledge Partners in this field. The Knowledge Culture Which of the statements given Archeological Survey of India (ASI); above is/are correct? (a) 1 only (b) 2 only (c) Both 1 and 2 (d) Neither 1 nor 2 Ans C implemented for curating rich heritage of 6 notified minority (viz. Muslims, Christians, Sikhs, Buddhists, Parsis and Jains) Ministry of Minority Affairs will implement this scheme in Partners may be as follows: * National Museum, Delhi; * National Archives of India, New Delhi; National Gallery of Modern Arts (NGMA); * Indira Gandhi National Centre of Arts (IGNCA); & United Nations Educational, Scientific and Cultural Organization (UNESCO); Indian National Trust for Arts and Cultural heritage (INTACH); World Monument Fund

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