North Eastern Hill University

About: North Eastern Hill University is a education organization based out in Shillong, Meghalaya, India. It is known for research contribution in the topics: Population & Catalysis. The organization has 2318 authors who have published 4476 publications receiving 48894 citations.

The “Indian Face,” India's Northeast, and “The Idea of India”

Abstract: This article introduces the concept of the “Indian Face” as a discursive and somatic image, or a face-scape, that represents the Indian nation with the aim of rendering legible the existing confusion between Mongoloid phenotypes, preponderant in India's Northeast, and Indian citizenship. We posit that Mongoloid phenotypes have not found a place in the common imaginary of the “Indian Face,” although the latter is itself a highly diversified and inclusive concept. Northeasterners are often nonrecognized and misrecognized, or mirrored back by the wider Indian society as foreigners, hailing from such places as China, Nepal, Thailand, or Japan, and this withholding of “Indianness” works to discriminate against and marginalize them. To theorize this predicament we propose to substitute the logo-map, central to much theorizing of nationalism, with a “physiognomic map,” drawn on the imaginings of what a co-citizen might look like. The nonrecognition, or nonacceptance, of Northeasterners as equal Indians extends, ...

Highly selective light-up Al3+ sensing by a coumarin based Schiff base probe: Subsequent phosphate sensing DNA binding and live cell imaging

Abstract: A coumarin based simple fluorescent “turn-on” probe, 4-Hydroxy-3-[(2-hydroxy-5-methoxybenzylidene)-amino]-chromen-2-one (HMC), to detect metal ion based on the chelation enhanced fluorescence (CHEF), was synthesized by condensing 3-amino-4-hydroxycoumarin and 2-hydroxy-5-methoxybenzaldehyde. It was found to be highly selective and sensitive sensor for Al3+ in 90% aqueous methanol (MeOH: 0.01 M HEPES Buffer; 9:1; v/v) at pH 7.4 in fluorescence spectroscopy. Fluorescence intensity enhancement along with 10 nm blue shift was observed only in the presence of Al3+. The HMC binds Al3+ in 1:1 stoichiometry with a binding constant, Ka = (9.9 ± 0.04) × 103 M−1 and the detection limit was calculated to be as low as 1.62 μM. The binding mode of interaction with Al3+ and the chelate complex formation was supported with the help of a 1H NMR spectroscopy titration, ESI–MS and also by theoretical studies. Moreover, the HMC·Al3+ ensemble subsequently detected the biologically important phosphate ions and nucleotides via fluorescence quenching. The live cell imaging study indicated that HMC is highly efficient in the detection of exogenous Al3+ in living cell.

Mineral nutrition in the tripartite interaction between Frankia, Glomus and Alnus at different soil phosphorus regimes

Abstract: SUMMARY Phosphate uptake by a tripartite association involving Frankia, Glomus and Alnus was studied in containerized seedlings of Alnus nepalensis D. Don. The response of non-mycorrhizal plants to P fertilization was more pronounced than their mycorrhizal counterparts. The yield of nodulated mycorrhizal plants was greater at low than at high P doses. At the highest P application, however, reduction in nodulation as well as nitrogenase activity was observed. Mycorrhizal infection was reduced by phosphate application, but markedly stimulated nodulation in Alnus seedlings. The nitrogen content of the nodule was higher than that of the shoot of nodulated mycorrhizal plants. Nodule dry weight, nitrogenase activity and nodule nitrogen content increased with increase in P application up to quantities typical of those in soil, after which it declined.