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Tavarekere Kalliah Chandrashekar
Tavarekere Kalliah Chandrashekar (born 1956) is an Indian bioinorganic chemist and a former director of National Institute for Interdisciplinary Science and Technology, a CSIR subsidiary. He was appointed the director of National Institute of Science Education and Research, Bhubaneswar where he continues as a senior professor at the department of chemical sciences. He is known for the discovery of novel macrocyclic systems and is an elected fellow of the Indian National Science Academy, National Academy of Sciences, India and the Indian Academy of Sciences. The Council of Scientific and Industrial Research, the apex agency of the Government of India for scientific research, awarded him the Shanti Swarup Bhatnagar Prize for Science and Technology, one of the highest Indian science awards, in 2001, for his contributions to chemical sciences. Biography T. K. Chandrashekar, born on the New Year's Day of 1956 in the Indian state of Karnataka, did his college studies at the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Indian Nationality
Indian nationality law details the conditions by which a person holds Indian nationality. The two primary pieces of legislation governing these requirements are the Constitution of India and the Citizenship Act, 1955. All persons born in India between 26 January 1950 and 1 July 1987 automatically received citizenship by birth regardless of the nationalities of their parents. Between 1 July 1987 and 3 December 2004, citizenship by birth was granted if at least one parent was a citizen. Individuals born in the country since then receive Indian citizenship at birth only if both parents are Indian citizens, or if one parent is a citizen and the other is not considered an illegal migrant. Foreigners may become Indian citizens by naturalisation after residing in the country for at least 12 years and renouncing any previous nationalities. Members of certain religious minority communities from neighbouring countries qualify for a reduced residence requirement of six years. Indian cit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Karl M
Karl may refer to: People * Karl (given name), including a list of people and characters with the name * Karl der Große, commonly known in English as Charlemagne * Karl Marx, German philosopher and political writer * Karl of Austria, last Austrian Emperor * Karl (footballer) (born 1993), Karl Cachoeira Della Vedova Júnior, Brazilian footballer In myth * Karl (mythology), in Norse mythology, a son of Rig and considered the progenitor of peasants (churl) * ''Karl'', giant in Icelandic myth, associated with Drangey island Vehicles * Opel Karl, a car * ST ''Karl'', Swedish tugboat requisitioned during the Second World War as ST ''Empire Henchman'' Other uses * Karl, Germany, municipality in Rhineland-Palatinate, Germany * ''Karl-Gerät'', AKA Mörser Karl, 600mm German mortar used in the Second World War * KARL project, an open source knowledge management system * Korean Amateur Radio League, a national non-profit organization for amateur radio enthusiasts in South Korea * KAR ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Porphyrin
Porphyrins ( ) are a group of heterocyclic macrocycle organic compounds, composed of four modified pyrrole subunits interconnected at their α carbon atoms via methine bridges (=CH−). The parent of porphyrin is porphine, a rare chemical compound of exclusively theoretical interest. Substituted porphines are called porphyrins. With a total of 26 π-electrons, of which 18 π-electrons form a planar, continuous cycle, the porphyrin ring structure is often described as aromatic. One result of the large conjugated system is that porphyrins typically absorb strongly in the visible region of the electromagnetic spectrum, i.e. they are deeply colored. The name "porphyrin" derives from the Greek word πορφύρα (''porphyra''), meaning ''purple''. Complexes of porphyrins Concomitant with the displacement of two N-''H'' protons, porphyrins bind metal ions in the N4 "pocket". The metal ion usually has a charge of 2+ or 3+. A schematic equation for these syntheses is shown: :H2porp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Journal Of Porphyrins And Phthalocyanines
The ''Journal of Porphyrins and Phthalocyanines'' (JPP) is a scientific journal that covers developments in the research and technology of porphyrins and phthalocyanines.World Scientific. ''Journal Aims & Scope''. http://www.worldscinet.com/jpp/mkt/aims_scope.shtml JPP was founded in 1997 and is published by World Scientific. The current editor-in-chief is Karl M. Kadish, a professor emeritus at the University of Houston. ''Journal Citation Reports'' assigned JPP an impact factor of 1.816 in 2019. Society of Porphyrins & Phthalocyanines The Society of Porphyrins and Phthalocyanines (SPP) was formed in June 2000 by an interdisciplinary group of scientists involved with the synthesis, spectroscopy, processing, and applications of these compounds. SPP purchased JPP from John Wiley & Son in 2001, and handled all aspects of the journal's publication before entering into a joint publication venture with World Scientific in 2009. SPP organizes the International Conference of Porphy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Indian Chemical Society
The Indian Chemical Society is a scientific society dedicated in the field of chemistry from India. It was established in 1924 with Prafulla Chandra Ray as its founding president. The same year the society started to publish its "Quarterly Journal of Indian Chemical Society" (1924– 1927) which is currently known as Journal of Indian Chemical Society. Fellows *Animesh Chakravorty Animesh Chakravorty FNA, FASc (born 30 June 1935) is a Bengali Indian inorganic chemist. In 1975, he was awarded the Shanti Swarup Bhatnagar Prize for Science and Technology in chemistry by the Council of Scientific and Industrial Research. E ... Indian Chemical Society – North Branch To serve more efficiently towards the scientific objective of the society, on the 3rd day of March 2020 ICS has launched thIndian Chemical Society – North Branch [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nuclear Magnetic Resonance
Nuclear magnetic resonance (NMR) is a physical phenomenon in which nuclei in a strong constant magnetic field are perturbed by a weak oscillating magnetic field (in the near field) and respond by producing an electromagnetic signal with a frequency characteristic of the magnetic field at the nucleus. This process occurs near resonance, when the oscillation frequency matches the intrinsic frequency of the nuclei, which depends on the strength of the static magnetic field, the chemical environment, and the magnetic properties of the isotope involved; in practical applications with static magnetic fields up to ca. 20 tesla, the frequency is similar to VHF and UHF television broadcasts (60–1000 MHz). NMR results from specific magnetic properties of certain atomic nuclei. Nuclear magnetic resonance spectroscopy is widely used to determine the structure of organic molecules in solution and study molecular physics and crystals as well as non-crystalline materials. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
High-resolution Transmission Electron Microscopy
High-resolution transmission electron microscopy is an imaging mode of specialized transmission electron microscopes that allows for direct imaging of the atomic structure of samples. It is a powerful tool to study properties of materials on the atomic scale, such as semiconductors, metals, nanoparticles and sp2-bonded carbon (e.g., graphene, C nanotubes). While this term is often also used to refer to high resolution scanning transmission electron microscopy, mostly in high angle annular dark field mode, this article describes mainly the imaging of an object by recording the two-dimensional spatial wave amplitude distribution in the image plane, in analogy to a "classic" light microscope. For disambiguation, the technique is also often referred to as phase contrast transmission electron microscopy. At present, the highest point resolution realised in phase contrast transmission electron microscopy is around . At these small scales, individual atoms of a crystal and its defects can ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Department Of Atomic Energy
The Department of Atomic Energy (DAE) (IAST: ''Paramāṇu Ūrjā Vibhāga'') is a department with headquarters in Mumbai, Maharashtra, India. DAE was established in 1954 by a Presidential Order. DAE has been engaged in the development of nuclear power technology, applications of radiation technologies in the fields of agriculture, medicine, industry and basic research. DAE comprises five research centres, three industrial organisations, five public sector undertakings and three service organisations. It has under its aegis two boards for promoting and funding extramural research in nuclear and allied fields, mathematics and a national institute (deemed university). It also supports eight institutes of international repute engaged in research in basic sciences, astronomy, astrophysics, cancer research and education. It also has in its fold an educational society that provides educational facilities for children of DAE employees. The important programmes of the DAE are directed t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Department Of Science And Technology (India)
The Department of Science and Technology (DST) is a department within the Ministry of Science and Technology in India. It was established in May 1971 to promote new areas of science and technology and to play the role of a nodal department for organising, coordinating and promoting Scientific and Technological activities in the country. It gives funds to various approved scientific projects in India. It also supports various researchers in India to attend conferences abroad and to go for experimental works. Jitendra Singh is Minister of State (Independent Charge), while S. Chandrasekhar is its secretary. Open access Department of Science and Technology (India) supports open access to scientific knowledge, originated from the public-funded research in India. In December 2014, the DST and the Department of Biotechnology (DBT), Government of India had jointly adopted their Open Access Policy. Scientific Programmes Autonomous S&T Institutions The autonomous science and tec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Photodynamic Therapy
Photodynamic therapy (PDT) is a form of phototherapy involving light and a photosensitizing chemical substance, used in conjunction with molecular oxygen to elicit cell death (phototoxicity). PDT is popularly used in treating acne. It is used clinically to treat a wide range of medical conditions, including wet age-related macular degeneration, psoriasis, atherosclerosis and has shown some efficacy in anti-viral treatments, including herpes. It also treats malignant cancers including head and neck, lung, bladder and particular skin. The technology has also been tested for treatment of prostate cancer, both in a dog model and in human prostate cancer patients. It is recognised as a treatment strategy that is both minimally invasive and minimally toxic. Other light-based and laser therapies such as laser wound healing and rejuvenation, or intense pulsed light hair removal do not require a photosensitizer. Photosensitisers have been employed to sterilise blood plasma and wate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Porphyrins
Porphyrins ( ) are a group of heterocyclic macrocycle organic compounds, composed of four modified pyrrole subunits interconnected at their α carbon atoms via methine bridges (=CH−). The parent of porphyrin is porphine, a rare chemical compound of exclusively theoretical interest. Substituted porphines are called porphyrins. With a total of 26 π-electrons, of which 18 π-electrons form a planar, continuous cycle, the porphyrin ring structure is often described as aromatic. One result of the large conjugated system is that porphyrins typically absorb strongly in the visible region of the electromagnetic spectrum, i.e. they are deeply colored. The name "porphyrin" derives from the Greek word πορφύρα (''porphyra''), meaning ''purple''. Complexes of porphyrins Concomitant with the displacement of two N-''H'' protons, porphyrins bind metal ions in the N4 "pocket". The metal ion usually has a charge of 2+ or 3+. A schematic equation for these syntheses is shown: :H2porphyr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
