Refrigeration is the result of the absorption of energy (heat) during the evapora tion of a liquid. A refrigerant liquid is circulated through a closed system of pipes, in which on one side (refrigeration chamber) it is ...
Refrigerators and freezers are among the most important pieces of equipment in laboratories. They maintain a temperature controlled (refrigerated) environment for various fluids and substances. At lower temperatures, less ...
A refrigerator consists of a heavily insulated cabinet with an efficient door seal which prevents heat from the outside entering the cabinet.
The temperature inside a refrigerator is kept low by a closed coiled circuit ...
El sistema de diagnóstico fluoroscópico de rayos X, incluye una variedad de diseños para generar y controlar rayos X; detectar y convertir patrones de rayos X absorbidos o aminorados al pasar a través del cuerpo en ...
Podemos decir que al infundir un líquido a un paciente a través de un acceso vascular, establecemos un sistema formado por las líneas o “sets” de infusión y la vasculatura del paciente. Para este sistema, se cumple la ...
The word spectrophotometer is derived from the Latin word spectrum, which means image, and the Greek word phos or photos, which means light. The spectrophotometer is one of the main diagnostic and research instruments ...
Stethoscopes require little maintenance apart from replacement of lost, cracked, or broken parts, such as ear-pieces and diaphragms (Fig. 3.3). On the older types, the tubing may perish and need replacing. While it is ...
Generally, the stirring heating plate has a flat surface on which are placed receptacles containing fluids to be heated and agitated. Its surface is made of good thermal conductors such as aluminium [Al] or ceramic materials. ...
The usual atmospheric pressure used for calibration is 760 mmHg (100 kPa or 14.7 psi), which is the standard at sea level. Negative pressure is any pressure that is less than atmospheric, or zero, on the pressure gauge. A ...
A suction pump can have hundreds of uses in the medical setting, all of which relate to removing fluids and substances from the body. Suction pumps can be used for removing ingested toxins (a stomach pump), unwanted fats ...
In surgical diathermy, a high-frequency electric current (0.5—2 MHz) is used to produce heat to seal (by coagulation) blood vessels, or to cut and seal at the same time. The heating can be regulated by a variable ...
Continuous-flow anaesthetic machines (commonly known as Boyle's machines or simply gas machines) are in widespread use. They rely on a supply of compressed medical gas, either from cylinders attached directly to the machine ...
Anaesthetic machines and ventilators should be tested in the room or area where the equipment is situated, if at all possible. Service personnel must wear accepted operating-room clothing in the surgical areas. Contact the ...
An operating table has several features which allow the surgical team to position the patient as required (Figure 35).
As there are many models, the following information is presented as a general guide only.