background port site complications following elective surgery are rare and port site infections remain the most common short long term complications. objectives the study was conducted to analyze port site complications occurring in patients undergoing laparoscopic cholecystectomy for symptomatic cholelithiasis. patients and methods ninety patients undergoing laparoscopic cholecystectomy were r...

The development of macromodels of differential drivers for the prediction of the analogue operation of very high-speed digital communication links is explored. The macromodels are mathematical relations hiding the information on the internal structure of devices; they are estimated from port device responses and can be easily implemented in any circuit or analogue mixed-signal simulator as SPIC...

This work examined the suitability of the PAGAT gel dosimeter for use in dose distribution measurements around high-density implants. An assessment of the gels reactivity with various metals was performed and no corrosive effects were observed. An artefact reduction technique was also investigated in order to minimise scattering of the laser light in the optical CT scans. The potential for atte...

Using a cationic operational system in capillary isotachophoresis, millimolar concentrations of sodium were determined in the absence and presence of serum proteins. With several internal standards, the reproducibility of the sodium determination was significantly poorer in the presence of proteins, even after partial thermal degradation. The results are explained by protein-sodium interaction ...

With five of the largest harbors in the United States, California is beginning to take steps to manage the large amounts of pollution generated by these bustling centers of transport and commerce. One option for reducing diesel emissions is the use of fuel cells, which run cleaner than diesel and other internal combustion engines. Other technologies being explored by harbor officials are diesel...

To close, let's estimate the overall chip count required to add the multicast capability to a point-to-point network with 256 inputs and outputs. We will assume that for the chips that have little internal memory, we are constrained only by pin count, that each chip has 128 pins available for inputs and outputs and that the data paths are one bit wide. For the example con guration then, 32 chip...

Abstract. The shared cache structures and snoop cache structures for single-chip multiprocessors are evaluated and compared using an instruction level simulator. Simulation results show that 1-port large shared cache achieves the best performance if there is no delay penalty for arbitration and accessing the bus. However, if 1-clock delay is assumed for accessing the shared cache, a snoop cache...

We discuss the most important and simple concept of basic circuit theory—the concept of the unideal source—or the Thevenin circuit. It is explained firstly how the Thevenin circuit can be interpreted in the algebraic sense. Then, we critically consider the common opinion that it is a linear circuit, showing that linearity (or nonlinearity) depends on the use of the port. The difference between ...

This paper presents the structural analysis of a port community system (PCS) and its main stakeholders, both internal and external, who are involved in the execution of port business activities. Typical information and telecommunications infrastructure of a PCS is outlined, along with the main challenges in its introduction. Furthermore, a significant emphasis is put on information security wit...