Synthesis of new chrysin derivatives with substantial antibiofilm activity

Molecular Diversity - Multidrug resistance mechanism of microorganisms towards conventional antimicrobials nowadays faces a common health problem. So, searching and development of new...     

Identification of potential inhibitor against Ebola virus VP35: insight into virtual screening,pharmacoinformatics profiling,and molecular dynamic studies

Structural Chemistry - The Ebola virus is a deadly pathogen that causes a highly lethal hemorrhagic fever illness in humans, sometimes known as Ebola virus sickness (EVD). The Ebola virus...     

Some properties of generalized intuitionistic fuzzy nilpotent matrices over distributive lattice

In this paper, the concept of lattice over generalized intuitionistic fuzzy matrices (GIFMs) are introduced and have shown that the set of GIFMs forms a distributive lattice. Some algebraic properties of generalized intuitionistic fuzzy matrices (GIFMs) are presented over distributive lattice. Also, some characteristics of generalized intuitionistic fuzzy nilpotent matrices (GIFNMs) are discussed over distributive lattice. Finally, the reduction of GIFNMs over distributive lattice are given with some properties.     

Ternary Galois field arithmetic operations with optical nonlinear material (OPNLM) switch

Ternary Galois field (GF3) arithmetic can take an important and significant role in future information processing with multi-valued logic (MVL). An all optical circuit for two arithmetical operations (addition and multiplication) in ternary Galois field with OPNLM switch is proposed and discussed. The different states of polarization of light are taken as different logic states. An outline of Ternary Galois field sum of product (TGFSOP) is also discussed. Mathematical simulation has confirmed the result.     

Aqueous solutions of ionenes: interactions and counterion specific effects as seen by neutron scattering

Aqueous solutions of ionenes with bromide and fluoride counterions have been investigated using small angle neutron scattering for the first time. Ionenes are a class of cationic polyelectrolytes based on quaternary ammonium atoms and, considering the very low solubility of their uncharged part (hydrocarbon chain), would be formally classified as hydrophobic. Ionenes present important structural differences over previously studied polyelectrolytes: (a) charge is located on the polyelectrolyte backbone, (b) the distance between charges is regular and tunable by synthesis, (c) hydrophobicity comes from methylene groups of the backbone and not from bulky side groups. Results for Br ionenes feature a disappearance of the well-known polyelectrolyte peak beyond a given monomer concentration. Below this concentration, the position of the peak depends on the chain charge density, f(chem), and scales as f(chem)(0.30±0.04). This is an indication of a hydrophilic character of the ionene backbone. In addition, osmotic coefficients of ionene solutions resemble again other hydrophilic polyelectrolytes, featuring no unusual increase in the water activity (or a significant counterion condensation). We conclude that despite the hydrophobicity of the hydrocarbon chain separating charged centers on ionenes, these chains behave as hydrophilic. In contrast to Br ionenes, the polyelectrolyte peak remains at all concentrations studied for the single F ionene investigated. This strong counterion effect is rationalized in terms of the different hydrating properties and ion pairing in the case of bromide and fluoride ions.     

Design of ternary Multiplexer and De-multiplexer circuit with optical nonlinear material (OPNLM) based switch

Multiplexer and De-multiplexer operation play a very important role in all-optical computation, communication and control. Considerable number of multiplexing – de-multiplexing scheme in digital optical processing have already been reported. A design of all-optical ternary Multiplexer De-multiplexer circuit with optical nonlinear material (OPNLM) based switch is proposed and described in this paper. Different logic states have been represented by different polarization states of light. Logical simulation is also included here. This circuit will be useful in future all-optical multi-valued logic based computing and information processing system.     

Long-term conservation through cryopreservation of immature seed of Mantisia spathulata and Mantisia wengeri; two endangered plants of north-east India

A successful protocol for long-term conservation of two endangered plants viz. Mantisia spathulata and M. wengeri has been devised through cryopreservation of immature seeds. Immature seeds of both the species were precultured in 0.6 M Sucrose and 2 M Glycerol for 3 h at 24 ± 2 degree C. Precultured seeds were then desiccated under the airflow of 27 ± 3 m min -1 velocity inside laminar air flow cabinet for different time periods. The seeds were then cryostored in liquid nitrogen for an hour. A maximum of 40 percent and 36.6 percent seed germination was recorded after cryostorage at moisture contents of 26.0 percent and 16.2 percent for M. spathulata and M. wengeri respectively. To protect these rare plants against loss due to disease, insect damage, or natural disaster a back up collection has been established using the protocol and applied to a large number of immature seeds that were obtained from the ex situ plants growing in the experimental garden of the North-eastern Hill University, Shillong.     

Inequalities for the Coefficients of Meromorphic Starlike Functions with Nonzero Pole

In this article we consider functions f that are meromorphic and univalent in the unit disc ${\mathbb{D}}$ with pole at the point ${z = p \in (0, 1)}$ and having a Taylor expansion at the origin of the form $$f(z) = z + \sum _{n=2}^{\infty}a_n(f)z^n, \quad |z| < p.$$ The class of functions that satisfy the above conditions and map the unit disc such that ${\overline{\mathbb{C}} \setminus f(\mathbb{D})}$ is starlike with respect to a point w ₀ ( ≠ 0, ∞) will be denoted by Σ *(p, w ₀). We generalize and sharpen an inequality for a ₂(f), ${f \in \Sigma^*(p,w_0)}$ , proved by Miller (Proc Am Math Soc 80:607–613, 1980) by use of the coefficients a _n (f), n ≥ 3.