COMPUTER NETWORK2- LEC 6

Chapter 6  : Network Performance & Transmission Media

 

 

In previous sections, we have discussed the tools for transmitting data (signals) over a network and how the data behaves. In this section, we discuss quality of service, and an overall measurement of network performance. 
 

1 st Lecture General Introduction to Physiology Cell Physiology: General Functions, Cell Membrane Transport

Physiology definition: is the scientific study of functions and mechanisms in living systems. It is a branch of biology that focuses on how organisms, organ systems, individual organs, cells, and biomolecules carry out chemical and physical functions in living organisms. Scope: Physiology examines life processes at various levels, from molecular and cellular to organ systems and whole organisms. It seeks to understand how different parts of living things work together to maintain life.

Introduction to Prosthodontics

Introduction to Prosthodontics Second Stage 1. lecture م.د. نسرين مهدي صالح الفهداوي جامعةالمعارف/ كلية طب األسنان History of false teeth • Replacements of lost teeth have been produced for thousands of years • 1st dentures were 700 BC from ivory & bone • Silver, gold, mother of pearl • In 1774, dentures made from porcelain • The real breakthrough came when vulcanized rubber was discovered • The discovery of acrylic resin is the next major revolution in prosthodontics. • Another important milestone in tooth replacement was the introduction of implants.

Medical Chemistry

Chemical Concentrations: The concentration of a solution is a measure of the amount of solute that is dissolved in a given quantity of solvent.

 –A dilute solution is one that contains a small amount of solute. 

–A concentrated solution contains a large amount of solute.