BACKGROUND Histopathological lesions and biometric variations in catfish species are statistically associated with chemical contaminant exposure. A histopathological and biometric database for the catfish Sciades herzbergii and Bagre bagre from São Luís Island (Port Area) and Caranguejos Island (Reference Area) is presented. Branchial and hepatic lesions were classified into three reaction patt...

A simple algorithm is presented for evaluating scattering parameters of a two-port network. This technique uses the indefinite admittance matrix to calculate scattering or any other desired set of two-port parameters.

Abstract Sea transport and seaborne trade have increased significantly in the past few decades. As sea traffic hubs, ports high risks because of limitation manoeuvrability, number vessels, land-based port activities. In coastal city Limassol, water air pollution has been anecdotally attributed to The STEAM project (Sea Traffic Management Eastern Mediterranean, INTEGRATED/0916/0063, [1]) aims se...

The aim of this retrospective study was to evaluate the mid-term outcome (average follow-up 10 months, range 6-18 months) and value of transaxillary single-port thoracic sympathectomy using a thoracoscope with an operating channel for the treatment of hyperhidrosis. Between December 1992 and October 2002, 176 consecutive patients (94 men, 82 women, mean age 21 years) with hyperhidrosis underwen...

Ambient radio-frequency (RF) energy harvesting can extract from RF signals in the ambient environment and has potential for applications Internet of Things. However, power density is low therefore methods to maximize average output direct current (dc) are required. In this work we show that dc nonlinearly dependent on antenna directivity linearly port number. To it necessary utilize directional...

This paper provides evidence of the cyclic behavior of containerization through an analysis of long, medium and short waves of container ports. The container, like any technical innovation, has a market and diffusion potential where a phase of maturity is eventually reached. Evidence from the global container port system suggests five successive major long waves of containerization with a shift...

Port organizations have focused their efforts on physical or tangible assets, generating profitability and value. However, it is recognized that the greatest sustainable competitive advantage is the creation of knowledge using the intangible assets of the organization. The Balanced ScoreCard, as a performance tool, has incorporated intangible assets such as intellectual, structural and social c...

In this work, we identify the current atmospheric sulfur dioxide emissions of Veracruz port, an important Mexican seaport experiencing rapid growth, and its influence on surrounding areas. Sulfur based port activity, as well meteorology air quality simulations, are used to assess impact. It was found that using marine fuel with low content reduces by 88%. Atmospheric emission estimates bottom-u...