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Ultramicroelectrode (UME) is a term used to describe microelectrodes where at least one of their dimensions is smaller than the thickness of the target analyte diffusion layer. Likewise, their small size is a key factor in specific applications such as single brain cells or capillary chromatography detectors. As a consequence UMEs can be applied in highly resistive media and in very fast scan-rate voltammetric experiments, oxygen does not interfere in the electrochemical experiments and the signal is less dependent on convection. Such an equilibrium is not possible at bigger electrodes, where the amount of species exchanging electrons at their surface is higher than those diffusing from the bulk of the solution, thus attaining transient currents. This feature is related with the equilibrium established between the diffusion of electroactive species that arrive to the electrode surface due to the concentration gradient and the electroactive species that exchange electrons at this surface. It is the possibility of achieving responses in the steady-state what makes UMEs highly attractive for specific applications. Furthermore the use of UMEs expands the time scale for carrying out measurements by several orders of magnitude, which is particularly useful to study rapid homogeneous or heterogeneous reactions. Such critical dimension makes the electrochemical response differ from that of a conventional electrode and opens up new possibilities for studying electrode reactions, which includes dynamic measurements in solutions with low electrolyte concentration, in non-polar solvents or low conducting media, and even in the solid phase or gas state. Since then, the concept of UME has been extended in the literature and can be defined taking into account that only one of the electrode characteristic dimensions, given by the geometry, must be in the order of some micrometers. One decade later the first comprehensive survey of the special properties and perspectives of the so-called micro-voltammetric electrodes was provided. The changes in mass transport conditions bring about extremely high current densities at UMEs, whereas the current themselves become very small. FX Equation is for anyone who gets frustrated with their current equation editor.In the 1970s the discovery, although non elucidation, of the unusual properties of ultramicroelectrodes (UMEs) opened new possibilities of analyzing electrode processes. No other program can rival FX Equation's easy, high speed creation of secondary science equations. No 'drawing' required.įX Equation is a totally different way of entering equations. Just type the structural formula of a compound and FX ChemStruct will draw a structural diagram. It gives me much more time to live!'įX ChemStruct does to organic structures what FX Chem does for chemical equations. FX Chem can even produce nuclear chemistry equations - something that is very difficult in Word. You just type and FX Chem knows enough about chemistry to put all of the components of the equation into the right spots.

Product UsesįX Chem makes writing chemical equations dead simple. Many schools make a little profit out of our packages. Our distribution subscriptions also give you the right to charge students a small annual fee for use of the software. Distribution Subscription - All computers on one site of the institution + staff can use the product at home + students can use the product at home.

FX CHEM 2.006 FULL

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FX CHEM 2.006 CODE

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FX CHEM 2.006 DOWNLOAD

You can download FX SciencePack from the links above. FX Equation - Astoundingly Quick Equationsįollow the links for more details on the individual products.FX ChemStruct - Drawing Chemical Structures Easily.FX Chem - Typing Chemical Equations the Easy Way.An FX SciencePack subscription lets you use all of the products for one very low yearly rate. Efofex's FX SciencePack contains three of the most powerful and useful science tools available for teachers and students.

Fx chem 2.006