1,726,040 research outputs found
Security beyond survival essays for K. Subrahmanyam
No full textKrishna Swami Subrahmanyam, b. 1929, Indian scientist; contributed articles
Design of molecularly imprinted polymers for sensors and solid phase extraction
Get PDFThis thesis presents broadly the applications of molecularly imprinted polymers in
sensors and solid phase extraction. Sensors for creatine and creatinine have been
reported using a novel method of rational design of molecularly imprinted polymers
(MIPs), and solid phase extraction of aflatoxin-B 1 has also been described in the
thesis.
A method for the selective detection of creataine and creatinine is reported in this
thesis, which is based on the reaction between polymerised hemithioacetal, formed by
allyl mercaptan, o-phthalic aldehyde, and primary amine leading to the formation of
fluorescent isoindole complex. This method was demonstrated for the detection of
creatine using creatine-imprinted MIPs. Since MIPs created using traditional methods
were unable to differentiate between creatine and creatinine, a new approach to the
rational design of a MIP selective for creatinine was developed using computer
simulation. A virtual library of functional monomers was assigned and screened
against the target molecule, creatinine, using molecular modeling software. The
monomers giving the highest binding score were further tested using simulated
annealing in order to mimic the complexation of the functional monomers with
template in the monomer mixture. The result of this simulation gave an optimised
MIP composition. The computationally designed polymer demonstrated superior
selectivity in comparison to the polymer prepared using traditional approach, a
detection limit of 25 μM and good stability. The 'Bite-and- Switch' approach
combined with molecular imprinting can be used for the design of assays and sensors,
selective for amino containing substances.
MEP for the selective binding properties for aflatoxin-B 1 was prepared using the
computational approach. The results obtained demonstrate that the MISPE offers a
simple, convenient and a rapid methodology for solid phase extraction of aflatoxin-B 1
even at very low concentrations of 2 ppb. The commercially available C-18 cartridges
were able to recover only about 52% of aflatoxin-B 1 at concentrations of 2 ppb when
compared with almost complete recovery by the MIP. We have proved here that,
MIPs as a solid phase extraction materials offer important and practical advantages
with respect to other solid phase extraction methodologies
Sanjay Subrahmanyam : "Histoire globale de la première modernité"
No full textLeçon inaugurale Le 28 novembre 2013, à 18h (Amphithéâtre Marguerite de Navarre - Marcelin Berthelot) Cette année, le cours de Sanjay Subrahmanyam au collège de France est intitulé "Pensez le monde au XVIIe siècle : une histoire imparfaite". Première séance : le 2 décembre 2013. Retrouvez toutes les séances de Sanjay Subrahmanyam au collège de France : http://www.college-de-france.fr/site/sanjay-subrahmanyam/seminar-2013-2014.ht
Entrevista a Sanjay Subrahmanyam
Get PDFSanjay Subrahmanyam, Professor e Director do Center for India and South Asia na Universidade da Califórnia, Los Angeles (UCLA) desde 2004, fez os seus estudos em Nova Deli, na University of Delhi e na Delhi School of Economics, onde leccionou até 1995. Nessa altura integrou a École des Hautes Études en Sciences Sociales, de Paris, como Directeur d’ Études, e tornou-se, em 2002, Professor na Universidade de Oxford. É também Joint Managing Editor da Indian Economic and Social History Review (No..
Séminaire – 31/01/2017 – Sanjay Subrahmanyam – Autour de l'histoire connectée
No full text« Autour de l'histoire connectée » par Sanjay Subrahmanyam Date : 31/01/2017, 10h-17h Lieu : UCL, Louvain-la-Neuve, Halles Universitaires, Sénat Académique Le but du séminaire est de rencontrer Sanjay Subrahmanyam, futur docteur honoris causa de l'Université catholique de Louvain, autour de la démarche qui est la sienne -l’histoire connectée- à partir d’une conférence de sa part. La conférence aura comme point de départ deux articles et une interview disponibles dans le portfolio. Il ..
Manila, Melaka, Mylapore... : A Dominican Voyage through the Indies, ca. 1600
No full textSubrahmanyam Sanjay. Manila, Melaka, Mylapore... : A Dominican Voyage through the Indies, ca. 1600. In: Archipel, volume 57, 1999. L'horizon nousantarien. Mélanges en hommage à Denys Lombard (Volume II) pp. 223-242
A study of the Indian Ocean circulation using satellite observations and model simulations
No full textThe Indian Ocean circulation is studied using remotely-sensed satellite observations of sea surface height, sea surface temperature and surface winds to gain a more complete view of the surface circulation than is possible from hydrographic studies alone. The instruments used are, respectively, TOPEX/POSEIDON (T/P) altimeter, ERS-1 Along-Track Scanning Radiometer (ATSR) and Scatterometer during 1993-1995.The Somali eddies and possible formation mechanisms in the Arabian Sea are studied. The most energetic eddies found along the Somali coast depend on the monsoon system. The western boundary current, East India Coastal Current (EICC), in the Bay of Bengal is detected and analysed. Because of the scarcity of measured data in this region, satellite observations are required to examine the mechanisms which are involved in driving the EICC. Kelvin waves and Rossby waves in the Indian Ocean are identified and their role in energy transfer to the western boundary currents and to the eddies is examined. Kelvin and Rossby wave phase speeds are computed using two dimensional Fast Fourier Transforms (FFT) and Complex Principal Component (CPCA) Analysis. The phase speeds calculated from T/P altimetric observations are comparable to recent work by Killworth et al. (1997).A simple isopycnic N-layer wind-driven model is implemented to simulate the seasonal changes of surface and subsurface currents and circulation in the North Indian Ocean and to examine the response to different wind forcing. The solution with three active layers reproduces the robust features of the North Indian Ocean when forced with the real wind observations from the ERS-1 Scatterometer winds. As the Indian Ocean circulation depends mainly on the seasonally reversing monsoon winds, it is very important to use real winds to get a clear picture of the circulation pattern. Although most ocean models of this region are forced with climatological or ECMWF winds, in this study wind fields measured by the ERS-1 Scatterometer provide the forcing for the same period of the T/P altimeter data. The free sea surface height (FSSH) is calculated from the model at 10-day snapshots, to match the time period of the T/P altimeter cycles. The model simulations show the spaceborne scatterometers to be the most useful tool to provide wind forcing for ocean models.</p
Conférence : [Cycle Civilisation et barbarie] Sanjay Subrahmanyam (Marseille)
No full textMuCEM, Auditorium Germaine Tillion Jeudi 15 mai 2014, à 19h [Cycle Civilisation et Barbarie] Sanjay Subrahmanyam Né en 1961 à New Delhi, spécialiste de l’Inde du Sud aux XVIe et XVIIe et maîtrisant de nombreuses langues, Sanjay Subrahmanyam rejoint en 1994 le Centre d’étude sur l’Inde et l’Asie du Sud en France.Il est ensuite nommé directeur à l’École des hautes Études en Sciences sociales (EHSS), puis enseigne à Oxford à l’Institut d’études orientales avant de rejoindre en 2004 l’université ..
Ceci n'est pas un débat...
No full textSubrahmanyam Sanjay. Ceci n'est pas un débat.... In: Annales. Histoire, Sciences Sociales. 57ᵉ année, N. 1, 2002. pp. 195-201
Andre Gunder Frank, ReORIENT : Global Economy in the Asian Age
No full textSubrahmanyam Sanjay. Andre Gunder Frank, ReORIENT : Global Economy in the Asian Age. In: Annales. Histoire, Sciences Sociales. 55ᵉ année, N. 4, 2000. pp. 944-946
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