General Knowledge 64

Test # 64


1.
'Rani-ki-Vav' which has been nominated for World Heritage Status is a 11th century step well located in________?

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The rose family of plants, in addition to flowers, gives us apples, pears, plums, cherries, almonds, peaches and apricots.      .. More >>

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1.the advertisement of a star's name at the top of a theatrical poster      .. More >>

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Famous Indian Scientists

G N Ramachandran

G N Ramachandran was born on 8 October 1922 in Ernakulam, Kerala His father G Narayana Iyer was the principal of Maharajas college in Ernakulam Ramachandran did his intermediate from Maharajas college and his BSc (Hons) in Physics from St Josephs College, Tiruchi In 1942 he joined the Indian Institute of Science (IISc), Bangalore as a student in the Electrical Engineering department However, under the influence of CV Raman, he shifted to Physics He obtained his MSc and then his PhD in 1947, under Ramans supervision He then went to the Cavendish Laboratory, Cambridge and obtained his second PhD degree under Prof Wooster He returned to India in 1949 and joined IISc as an Assistant Professor In 1952, at the young age of 30, he moved to Madras as the Head of the Physics Department at the University of Madras On the suggestion of JD Bernal, the crystallographer and chemist, who visited the University in 1952, he started work on determining the structure of the protein collagen, the fibrous protein found in skin, bone and tendon Based on the limited data available at the time, in 1954, he proposed, along with Gopinath Kartha, the triplehelix structure for collagen, later revised in the light of new data to the coiled coil structure for biomolecules This was a fundamental advance in the understanding of biomolecular structures He and his colleagues C Ramakrishnan and V Sasisekharan went on to develop methods to examine and assess structures of biomolecules, in particular peptides In 1963, this resulted in the famous Ramachandran map, which is an indispensable tool in the study of molecular structures today His contributions in the field of Xray crystallography such as anomalous dispersion, new kinds of Fourier syntheses, and Xray intensity statistics are also extremely important His 1971 paper with AV Lakshminarayanan on threedimensional image reconstruction was to have important applications in Computer Assisted Tomography (The 1979 Nobel Prize in Physiology or Medicine was awarded to AM Cormack and Sir GN Hounsfield for their work in CAT)
In 1971 Ramachandran returned to Bangalore to set up the Molecular Biophysics Unit at the IISc which is today a major research centre He was elected Fellow of the Royal Society in 1977 and was awarded the Shanti Swarup Bhatnagar award In 1999, The International Union of Crystallography awarded him the prestigious Ewald Prize, which is given only once in three years He was the editor of Current Science between 1950 and 1957

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