The use of complex self tuning Proportional, Integral and Derivative (PID) controller, to drive the speed and direction in mini robot, is limited by calculus power and by the precision and noise of the on board input sensors, particularly severe problems arise in computing the derivative term. In this work a PID whose terms are computed from filtered input with a simple recursive Exponentially ...

IN nasal surgery, cartilage or bone transplants are required for support or correction of cosmetic deformities. When autogenous material is readily available, it should be used in preference to homogenous or heterogenous material. Sometimes this means, however, an iliac bone or rib cartilage graft. These procedures have a certain morbidity and the grafts are not always readily accepted by the p...

We study the eigenvalue problem for a specially structured rank-k updated matrix, based on the Sherman–Morrison– Woodbury formula. 2006 Elsevier Inc. All rights reserved.

Elusive metastable orthorhombic paracetamol single crystals were obtained by specially designed seeding technique from conventional slow evaporation method. Seeds were prepared at optimized conditions under different cooling rates from seed preparation unit and Powder x-ray diffraction (PXRD) was performed to ensure the polymorphic form of seeds. Saturated paracetamol solutions with three diffe...

A specially designed high resolution converging collimator having a focal length of 50 cm has been evaluated for cone beam single photon emission computed tomography (SPECT). The focal region was investigated by imaging a point source placed at the expected focal point and along the central ray of the collimator in front of and behind the focal point. Technetium-99m point source sensitivities m...

The Spanish climate is full of contrasts, with torrential rains and long droughts; under these conditions, appropriate water management is essential. In Spain, until the end of the twentieth century, water management and legislative development lagged behind other more developed countries. Nowadays, great efforts are being made to reverse this situation and improve both water management and leg...

We have used three inbreds of Zea mays in our in situ and laboratory studies in environmental mutagenesis. Inbred W22 plants homozygous for wx-C were used in a study to detect the possible mutagenic properties of 32 pesticides or combination of pesticides under modern agricultural conditions. The large numbers of pollen grains analyzed and the ease in detecting mutant pollen grains enabled us t...