Leads, electrical

Batteries, Electric (Lead-Acid Storage)"in ECT 1st ed., Vol. 2, pp. 340—360, by Joseph A. Orsino and Thomas C. Lynes, National Lead Company "Secondary CeUs, Lead—Acid" under "Batteries and Electric CeUs, Secondary" in ECT 2nd ed., Vol. 3, pp. 249—271, byjoseph A. Orsino, National Lead Company "Batteries and Electric CeUs, Secondary (Lead—Acid)" in ECT 3rd ed., Vol. 3, pp. 640—663, by James B. Doe, ESB Technology Company. 

Probe. It connects the electrodes in the corrodent on the inside of a vessel to the electrical leads. 

Electrical leads. They run from the probe to the current source and instrument panel. 

Instrument air lines Electrical leads Capillary tubing... 

The metal electrode to be studied must be carefully prepared, attached to an electrical lead and mounted so that a known surface area of one face is presented to the solution. Several procedures are used such as mounting in a cold setting resin (Araldite) or inserting into a close-fitting holder of p.t.f.e. In the case of metal-solution systems that have a propensity for pitting care must be taken to avoid a crevice at the interface between metal specimen and the mounting material, and this can be achieved effectively by mounting the... 

II. Ease of electrical connection Here the main problem is that of efficient electrical current collection, ideally with only two electrical leads entering the reactor and without an excessive number of interconnects, as in fuel cells. This is because the competitor of an electrochemically promoted chemical reactor is not a fuel cell but a classical chemical reactor. The main breakthrough here is the recent discovery of bipolar or wireless NEMCA,8 11 i.e. electrochemical promotion induced on catalyst films deposited on a solid electrolyte but not directly connected to an electronic conductor (wire). 

Fig. 17. Bipolar capillary cell (a) 125 fim gaps, (b) glass vessel, (o) electrical leads, (d) stack of graphite plates, (e) solution flow. (Taken from Beck and Guthke, 1969.)...

Vagus nerve stimulation (VNS) may be used for adult patients with treatment-resistant depression. A pulse generator is surgically implanted under the skin of the left chest, and an electrical lead connects the generator to the left vagus nerve. Stimulation of this nerve sends signals to the brain. This therapy is intended to be used along with traditional therapies, such as pharmacotherapy and ECT.20... 

Attach the black lead to the 2 cm piece of wire. Insert the wire into one end of the U-tube. Attach the red electrical lead to the graphite. Insert the graphite into the other end of the U-tube. 

For kilohertz measnrement frequencies and above, the contribution of Qi can generally be neglected. McWhorter and Soper employed a simple two-electrode contact conductivity detector with reverse-phase ion pair chromatography, and achieved a detection limit of 3.46pg in a lOOnL volume (464nM) for KCl [54]. Four-electrode setups, in which two leads are nsed to measure current and the other pair to measure voltage, can also be nsed in order to eliminate the effect of the impedance of the electrical leads on the measnrement. 

A dry-bag is a bag, usually about 0.5 x 1 m, made of a transparent, inert and tough film or sheet which has an easily sealable entry port for inserting apparatus and several ports for admitting purging gas, electrical leads, etc., and at least two gloves so that operations can be done inside it. 

The dry-box, also known as glove-box, consists essentially of a metal box with a viewing window and (at least) two rubber or plastic gloves, a port, usually with a lock for the introduction of reagents or pieces of equipment, and ports for the in-flow and out-flow of inert gas, for electrical leads, etc. The atmosphere inside the box is established by a stream of well-dried and deoxygenated inert gas which is usually kept slightly above atmospheric... 

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