The presence of acrylamide in the environment poses a threat due to its well known neurotoxic, carcinogenic and teratogenic properties. Human activities in various geographical areas are the main anthropogenic source of acrylamide pollution. In this work, an acrylamide-degrading bacterium was isolated from Antarctic soil. The physiological characteristics and optimum growth conditions of the ac...

A novel extremely thermophilic bacterium was isolated from a shallow marine hydrothermal vent environment (depth, 22 m) in Tachibana Bay, Nagasaki Prefecture, Japan. The cells of this organism were gramnegative rods. Growth occurred at temperatures between 50 and 85°C (optimum temperature, 80°C; doubling time at optimum temperature, 90 min), at pH 5.5 and 9.0 (optimum pH, 7.0), and in the prese...

Transition of an evolving population to a new adaptive optimum is predicted to leave a signature in the distribution of effect sizes of fixed mutations. If they affect many traits (are pleiotropic), large effect mutations should contribute more when a population evolves to a farther adaptive peak than to a nearer peak. We tested this prediction in wild threespine stickleback fish (Gasterosteus ...

This work focuses on the B2B interaction between a service requester and a service provider in a healthcare environment. The requester is the primary caregiver responsible for managing the health of a population of patients. When a patient requires advanced care outside the requester’s expertise, the requester refers the patient to a provider and pays for the referral services. Treatment may su...

Efficient Call Admission Control (CAC) is necessary for the QoS provisioning in WCDMA environment. Traffic in the upcoming wireless networks is expected to be extremely non stationary. For the traffic of real-time classes which are non stationary at the base station, the performance of scheduler gets degraded due to the presence of arrival rate estimation errors. Inefficient resource (i.e., rat...

In this paper, the e ect of transmitter beam size on the performance of free space optical (FSO) communication has been determined experimentally. Irradiance pro le for varying turbulence strength is obtained using optical turbulence generating (OTG) chamber inside laboratory environment. Based on the results, an optimum beam size is investigated using the semi-analytical method. Moreover, the ...

This paper develops a robust method to enumerate the incident signals impinging on a uniform but variable size linear array independant of their extent of correlation in a Rayleigh flat fading channel environment. The method also optimizes by minimizing the number of antennas to the number of signals and adapts continously to maintain optimum performance in a mobile environment where users (sig...

Is it possible for humans to navigate in the natural environment wherein the path taken between various destinations is ‘optimal’ in some way? In the domain of optimization this challenge is traditionally framed as the “Traveling Salesman Problem” (TSP). What strategies and ecological considerations are plausible for human navigation? When given a twodimensional map-like presentation of the des...