The residual cyclodiene insecticides aldrin (A), dieldrin (D), heptachlor (H) and isodrin (I) can be converted by sunlight and ultraviolet light to their corresponding respective photoisomers photoaldrin (PA), photodieldrin (PD), photoheptachlor (PH) and photoisodrin (PI) (1,2,3,4). PA, PD and PH appear to be more toxic than their parent compounds to adults of the housefly, Musca domestica L. a...

Although oxidative stress has been strongly implicated in the pathogenesis of Alzheimer disease (AD) and Parkinson disease (PD), the identities of specific protein targets of oxidative damage remain largely unknown. Here, we report that Cu,Zn-superoxide dismutase (SOD1), a key antioxidant enzyme whose mutations have been linked to autosomal dominant neurodegenerative disorder familial amyotroph...

─ This paper provides new analytic tools for a rigorous control formulation and stability analysis of sliding modemultimodel controller (SM-MMC). In this way to minimise the chattering effect we will adopt as a starting point the multimodel approach to change the commutation of the sliding mode control (SMC) into fusion using a first order then a high order sliding mode control with single slid...

A sliding mode control method is presented for linear multi-variable discrete-time systems, without introducing a discontinuous term to eliminate control chattering. Instead of a strong nonlinear function like switching introducing chattering problem in discrete-time, a linear control is designed around the sliding surface. Although not producing a strong acting control around the sliding surfa...

In [8] we obtained stabilizing PID controllers for a class of MIMO unstable plants with time delays in the input and output channels (I/O delays). Using this approach, for plants with one unstable pole, we investigate resilient PI and PD controllers. Specifically, for PD controllers, optimal derivative action gain is determined to maximize the allowable controller gain interval. For PI controll...

Let P (x) = pdx + . . . + p0 ∈ Z[x] be such that d ≥ 1, pd = 1, p0 ≥ 2 and N = {0, 1, . . . , p0 − 1}. We are proving in this note a new criterion for the pair {P (x),N} to be a canonical number system. This enables us to prove that if p2, . . . , pd−1, ∑d i=1 pi ≥ 0 and p0 > 2 ∑d i=1 |pi|, then {P (x),N} is a canonical number system.

The paper studies the fuzzy logic controller for a shape memory alloy (SMA) biomimetic (tentacle type) robotic structure. A tentacle manipulator is a manipulator with a great flexibility, with a distributed mass and torque that can take any arbitrary shape. Considering the influences of the environment temperature, for SMA actuation, a special attention has to be paid to the adaptation of contr...

Thin "lms, formed by polymer blends spun-cast from a blend/solvent solution onto a rigid substrate, are used in many practical applications (e.g. photoresist layers, dielectric coatings). Film preparation process is often accompanied by phase decomposition (PD) during the rapid evaporation of the solvent. PD is re#ected in undulations formed on an air/"lm interface. We have studied the topograp...