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Poly-lysine peptidomimetics having potent antimicrobial activity without hemolytic activity
Ahn, Mija,Jacob, Binu,Gunasekaran, Pethaiah,Murugan, Ravichandran N.,Ryu, Eun Kyoung,Lee, Ga-hyang,Hyun, Jae-Kyung,Cheong, Chaejoon,Kim, Nam-Hyung,Shin, Song Yub,Bang, Jeong Kyu Springer-Verlag 2014 Amino acids Vol.46 No.9
M. Syed Ali,K. Meenakshi,N. Gunasekaran 제어·로봇·시스템학회 2017 International Journal of Control, Automation, and Vol.15 No.6
The problem of finite-time H∞ performance of discrete time neural network with norm-bounded disturbancesand time varying delays is studied in this paper. By constructing a delay-dependent Lyapunov-Krasovskiifunctional and using a two-term approximation of the time-varying delay, sufficient conditions of finite-time stabilityare derived and expressed in terms of linear matrix inequalities (LMIs). The derived stability conditions canbe applied into analyzing the finite-time stability and deriving the maximally tolerable delay. Comparision withthe existing results given to show that, the derived stability conditions are less conservative. Finally, numericalexamples are provided to illustrate the effectiveness of the proposed method.
Finite Time H∞ Boundedness of Discrete-time Markovian Jump Neural Networks with Time-varying Delays
M. Syed Ali,K. Meenakshi,N. Gunasekaran 제어·로봇·시스템학회 2018 International Journal of Control, Automation, and Vol.16 No.1
This paper is concerned with the problem of finite-time H∞ boundedness of discrete-time Markovian jumping neural netwoks with time-varying delays. A new sufficient condition is presented which guarantees the stability of the closed-loop system and the same time maximizes the boundedness on the non-linearity. An extension of fixed transition probability Markovian model is combined to time-varying transition probabilities has offered. By constructing a novel Lyapunov - Krasovskii functional, the system under consideration is subject to interval timevarying delay and norm-bounded disturbances. Linear matrix inequality approach is used to solve the finite-time stability problem. Numerical example is given to illustrate the effectiveness of the proposed result.
Durable keratin-based bilayered electrospun mats for wound closure
Singaravelu, Sivakumar,Ramanathan, Giriprasath,Muthukumar, Thangavelu,Raja, M. D.,Nagiah, Naveen,Thyagarajan, Sitalakshmi,Aravinthan, Adithan,P., Gunasekaran,Natarajan, T. S.,V. N. Geetha Selva, Ganga The Royal Society of Chemistry 2016 Journal of Materials Chemistry B Vol.4 No.22
<P>A bilayered nanofibrous scaffold with rapid wound healing properties is found to be suitable for tissue regeneration applications. The objective of this study is to reveal the fabrication of a poly(3-hydroxybutyric acid) (P)-gelatin (G) nanofibrous mat through electrospinning, with a horn keratin-chitosan-based biosheet (KC) as a bilayered nanofibrous scaffold. The mupirocin (D)-loaded horn KC biosheet (KCD) acts as the primary layer over which PG nanofibers were electrospun to act as the secondary layer. It is shown that this engineered bilayered nanofibrous scaffold material (KC-PG) should fulfill the functions of the extracellular matrix (ECM) by elucidating its function<I>in vitro</I>and<I>in vivo</I>. The bilayered nanofibrous scaffold was designed to exhibit improved physiochemical, biological and mechanical properties, with better swelling and porosity for enhanced oxygen permeability, and it also exhibits an acceptable antibacterial property to prevent infection at the wound site. The bilayered nanofibrous scaffold assists in better biocompatibility towards fibroblast and keratinocyte cell lines. The morphology of the nanofibrous scaffold aids increased cell adhesion and proliferation with cell material interactions. This was elucidated with the help of<I>in vitro</I>fluorescence staining against both cell lines. The bilayered KCD-PG nanofibrous scaffold material gives accelerated wound healing efficiency during<I>in vivo</I>wound healing. The results showed the regulation of growth factors with enhanced collagen synthesis, thereby helping in faster wound healing.</P>