Aligarh Muslim University

About: Aligarh Muslim University is a education organization based out in Aligarh, Uttar Pradesh, India. It is known for research contribution in the topics: Population & Adsorption. The organization has 8218 authors who have published 16416 publications receiving 289068 citations. The organization is also known as: AMU.

A New Hyperchaotic System-Based Design for Efficient Bijective Substitution-Boxes.

Abstract: In this paper, we present a novel method to construct cryptographically strong bijective substitution-boxes based on the complicated dynamics of a new hyperchaotic system. The new hyperchaotic system was found to have good characteristics when compared with other systems utilized for S-box construction. The performance assessment of the proposed S-box method was carried out based on criteria, such as high nonlinearity, a good avalanche effect, bit-independent criteria, and low differential uniformity. The proposed method was also analyzed for the batch-generation of 8 × 8 S-boxes. The analyses found that through a proposed purely chaos-based method, an 8 × 8 S-box with a maximum average high nonlinearity of 108.5, or S-boxes with differential uniformity as low as 8, can be retrieved. Moreover, small-sized S-boxes with high nonlinearity and low differential uniformity are also obtainable. A performance comparison of the anticipated method with recent S-box proposals proved its dominance and effectiveness for a strong bijective S-box construction.

Surface and Micellar Properties of Some Amphiphilic Drugs in the Presence of Additives

Abstract: In this study, the surface properties (in water and in the presence of varying concentrations of NaCl, CTAB, and TX-100) of four amphiphilic drugs are presented. The parameters evaluated are cmc (critical micelle concentration), Γmax (maximum surface excess concentration at the air/water interface), and Amin (minimum area per surfactant molecule at the air/water interface). Γmax increases and cmc/Amin decreases with increasing concentration of the additives. The cmc values calculated using a dye solubilization method for the systems also follow the same trend. The behavior is explained on the basis of counterion adsorption and mixed micelle formation.

Regeneration of plants from alginate-encapsulated shoots of Tylophora indica (Burm. f.) Merrill, an endangered medicinal plant

Abstract: SummaryA protocol has been developed for plant regeneration from encapsulated nodal segments of Tylophora indica. Nodal segments collected from a 2-year-old plant were encapsulated in calcium alginate beads. The best gel complex was achieved using 3% (w/v) sodium alginate and 100 mM CaCl2.2H2O. The maximum frequency (91%) of conversion of encapsulated beads into plantlets was achieved on Murashige and Skoog (MS) medium containing 2.5 µM 6-benzyladenine (BA) and 0.5 µM αnaphthalene acetic acid (NAA) after 6 weeks of culture. Encapsulated nodal segments stored at 4°C for 1 – 8 weeks also showed successful conversion, followed by development into complete plantlets when returned to regeneration medium. Conversion of encapsulated nodal segment into plantlets also occurred when the calcium alginate beads were sown directly into SoilriteTM moistened with ½2MS salts. Plants regenerated from encapsulated nodal segments could be hardened, acclimatised and established in soil, with a success rate of 90%. Encapsulat...