Biologia

 
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Permeability of living and denatured cell membranes

 
Detalles

Num.Producto: P0540800

Combinación sojetiva de colores

Principle

If a circular disc separated into various differently coloured sectors is rotated by a motor so fast that the eye can no longer distinguish the colours, a mixed colour is then perceived. By varying the composition and size of the sectors, it is possible to give the impression of any ...

 
Detalles

Num.Producto: P0872500

Descomposición microbiana de aceite mineral

 
Detalles

Num.Producto: P0989100

Calidad del auga - contaminación con metales pesados

Principle

Heavy-metal ions may be carried into surface or ground water from mining fields or via the waste water of galvanicor similar production sites. They block the effect of enzymes so that the processes in the metabolism of the organisms that are controlled by these enzymes may be ...

 
Detalles

Num.Producto: P0990162

Mecanismo de la respiración diafragmática

Mechanical model for the demonstration of how the human lung functions work. The model shows the expansion of the lungs (rubber balloons) when the breast area (polystyrene jar) is expanded by sinking the diaphragm (rubber cloth). Air flows into the lungs through the windpipe and bronchi ...

 
Detalles

Num.Producto: P1049300

Presión arterial

 
Detalles

Num.Producto: P1051100

Defectos de la vista (experimento modelo)

Function and Applications

This experiment allows a vivid demonstration of short-sightedness and long-sightedness compared to the normal vision of the human eye and of how such defects can be corrected

 
Detalles

Num.Producto: P1054300

Determ. of the fuel value of heating oil & diesel fuel & the calorif.value of olive oil.GL15

Principle

A simple modification can be used to convert the glass jacket into a vertical calorimeter, which is particularly well suited for determining the energy content of fluids such as vegetable oils, for example.


...
 
Detalles

Num.Producto: P1224300

Determinación cuantitativa de grasa en alimentos

 
Detalles

Num.Producto: P1257200

LC 4.6

 
Detalles

Num.Producto: P1259800

PRODUCCION BIOTECNOLOGICA DE ETANOL CON PANEL

Principio

Los métodos de producción biotecnológicos desempeñan un papel económico muy significativo en las industrias farmacéutica, química y alimenticia.
El biorreactor de burbujas aquí mostrado representa una alternativa sencilla y ...

 
Detalles

Num.Producto: P1313600

BACTERIAS AL SERVICIO DE LA MINERÍA

Principio

La importancia de ciertas bacterias en la producción de metales a partir de minerales fue reconocida en los años cincuenta.
Con el bioreactor que se muestra aquí, se puede utilizar el método de la lixiviación microbiana (con el ejemplo de la ...

 
Detalles

Num.Producto: P1313962

Chromoplasts

Principle
The fruits and blossoms of many plants possess intensively bright colors. The colorful fruit attracts animals, are devoured by them and the seeds are excreted at other places. This is how the plant is dispersed. Colorful blossoms attract insects that harvest nectar from the ...
 
Detalles

Num.Producto: P1441301

The stem of a monocotyledonous plant

Principle

The stem of plants must accomplish various functions. It supports the leaves, the lateral branches, and the blossoms. The mechanical supportive tissue (collenchyma) is responsible for the necessary stability and elasticity. Did you ever come to think about how a 20m-tall tree is ...

 
Detalles

Num.Producto: P1442301

Brine shrimp (Artemia salina)

Principle

There is a genus of very small crustaceans living in salt lakes. These animals feed on other microscopic organisms such as algae and bacteria. The brine shrimps lay eggs from which larvae develop. These grow up to juvenile crustaceans within a few weeks. When salt lakes dry up ...

 
Detalles

Num.Producto: P1443901

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