Filamentous cyanobacteria develop heterocysts in response to deprivation for combined nitrogen under aerobic conditions. The most prominent structural change in heterocysts is the biosynthesis of an envelope that restricts gas permeability, providing an appropriate micro-oxic environment for N2 fixation inside. The additional thickness of the differentiated cells, when compared to vegetative ce...

Photoinduced dynamics of charge density and lattice displacements is calculated by solving the time-dependent Schrödinger equation for a one-dimensional extended Peierls-Hubbard model with alternating potentials for the mixed-stack organic charge-transfer complex, TTFCA. A pulse of oscillating electric field is incorporated into the Peierls phase of the transfer integral. The frequency, the amp...

We report on the effect of repetition rate on the formation and surface texture of the laser induced homogenous microstructures. Different microstructures were micromachined on copper (Cu) and titanium (Ti) using femtosecond pulses at 1 and 10 kHz. We studied the effect of the repetition rate on structure formation by comparing the threshold accumulated pulse ( F Σ p u l s e ) values and the ef...

Abstract The dependence of the polymerization and optical damage thresholds in multi-photon (MPP) lithography was studied using a broadly-tunable laser system with group delay dispersion (GDD) control. order non-linearity light–matter interaction mechanisms were investigated resolution bridges method for non-photosensitized SZ2080 TM photosensitized + IRG369 prepolymers. Energy deposition, voxe...

The paper deals with the application of combined nondestructive method for assessment of compressive strength of calcium silicate bricks. In this case, it is a combination of the rebound hammer method and ultrasonic pulse method. Calibration relationships for determining compressive strength of calcium silicate bricks obtained from nondestructive parameter testing for the combined method as wel...

The purpose of this study was to find out the effect of concurrent strength and endurance training on selected endurance parameters namely Cardio-respiratory endurance and Resting pulse rate. To achieve this purpose, thirty students from the Department of Physical Education and Sports Sciences, Annamalai University, Annamalai Nagar, TamilNadu and India were selected as subjects at random. Their...