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2. Total dissolved solids - Wikipedia

   en.wikipedia.org/wiki/Total_dissolved_solids

   Total dissolved solids ( TDS) is a measure of the dissolved combined content of all inorganic and organic substances present in a liquid in molecular, ionized, or micro-granular ( colloidal sol) suspended form. TDS are often measured in parts per million (ppm). TDS in water can be measured using a digital meter.

3. Thermal desorption spectroscopy - Wikipedia

   en.wikipedia.org/wiki/Thermal_desorption...

   Thermal desorption is described by the Polanyi–Wigner equation derived from the Arrhenius equation . where. the desorption rate [mol/ (cm 2 s)] as a function of , order of desorption, surface coverage, pre-exponential factor [Hz] as a function of , activation energy of desorption [kJ/mol] as a function of , gas constant [J/ (K mol ...

4. Parts-per notation - Wikipedia

   en.wikipedia.org/wiki/Parts-per_notation

   Parts-per notation is often used describing dilute solutions in chemistry, for instance, the relative abundance of dissolved minerals or pollutants in water. The quantity "1 ppm" can be used for a mass fraction if a water-borne pollutant is present at one-millionth of a gram per gram of sample solution. When working with aqueous solutions, it ...

5. Gibbs free energy - Wikipedia

   en.wikipedia.org/wiki/Gibbs_free_energy

   t. e. In thermodynamics, the Gibbs free energy (or Gibbs energy as the recommended name; symbol ) is a thermodynamic potential that can be used to calculate the maximum amount of work, other than pressure-volume work, that may be performed by a thermodynamically closed system at constant temperature and pressure.

6. The best gifts for grandpa: Shop for all the grandpas in your ...

   www.aol.com/lifestyle/best-gifts-for-grandpa...

   Either way, he’ll love this Patagonia fleece. Made of 100% recycled polyester double-sided shearling, this warm, cozy fleece is perfect for a day of fishing or a trip to the grocery store. With ...

7. What Makes Telephone and Data System (TDS) a Strong Buy? - AOL

   www.aol.com/news/makes-telephone-data-system-tds...

   With a healthy dividend of 3.4% and solid fundamentals, Telephone and Data Systems (TDS) appears to be an enticing investment option in the volatile market.

8. Conductivity (electrolytic) - Wikipedia

   en.wikipedia.org/wiki/Conductivity_(electrolytic)

   Conductivity (electrolytic) Conductivity or specific conductance of an electrolyte solution is a measure of its ability to conduct electricity. The SI unit of conductivity is siemens per meter (S/m). Conductivity measurements are used routinely in many industrial and environmental applications as a fast, inexpensive and reliable way of ...

9. Why Telephone & Data Systems (TDS) is a Great Dividend ... - AOL

   www.aol.com/news/why-telephone-data-systems-tds...

   Dividends are one of the best benefits to being a shareholder, but finding a great dividend stock is no easy task. Does Telephone & Data Systems (TDS) have what it takes? Let's find out.