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2. Drinking water quality standards - Wikipedia

   en.wikipedia.org/wiki/Drinking_water_quality...

   Drinking water quality standards describes the quality parameters set for drinking water. Water may contain many harmful constituents, yet there are no universally recognized and accepted international standards for drinking water. Even where standards do exist, the permitted concentration of individual constituents may vary by as much as ten ...

3. Drinking water - Wikipedia

   en.wikipedia.org/wiki/Drinking_water

   The WHO/UNICEF Joint Monitoring Program (JMP) for Water Supply and Sanitation [81] is the official United Nations mechanism tasked with monitoring progress towards the Millennium Development Goal (MDG) relating to drinking-water and sanitation (MDG 7, Target 7c), which is to: "Halve, by 2015, the proportion of people without sustainable access ...

4. pH - Wikipedia

   en.wikipedia.org/wiki/PH

   The measurement of pH can become difficult at extremely acidic or alkaline conditions, such as below pH 2.5 (ca. 0.003 mol/dm 3 acid) or above pH 10.5 (above ca. 0.0003 mol/dm 3 alkaline). This is due to the breakdown of the Nernst equation in such conditions when using a glass electrode.

5. Isoelectric point - Wikipedia

   en.wikipedia.org/wiki/Isoelectric_point

   The isoelectric point (pI, pH(I), IEP), is the pH at which a molecule carries no net electrical charge or is electrically neutral in the statistical mean. The standard nomenclature to represent the isoelectric point is pH(I). [1] However, pI is also used. [2] For brevity, this article uses pI.

6. Water - Wikipedia

   en.wikipedia.org/wiki/Water

   More than 660 million people do not have access to safe drinking water. [109] [110] Water that is not fit for drinking but is not harmful to humans when used for swimming or bathing is called by various names other than potable or drinking water, and is sometimes called safe water, or "safe for bathing". Chlorine is a skin and mucous membrane ...

7. Protein pKa calculations - Wikipedia

   en.wikipedia.org/wiki/Protein_pKa_calculations

   The pH-dependence of the activity displayed by enzymes and the pH-dependence of protein stability, for example, are properties that are determined by the pK a values of amino acid side chains. The p K a values of an amino acid side chain in solution is typically inferred from the p K a values of model compounds (compounds that are similar to ...

8. Alzheimer's disease - Wikipedia

   en.wikipedia.org/wiki/Alzheimer's_disease

   These side effects arise in approximately 10–20% of users, are mild to moderate in severity, and can be managed by slowly adjusting medication doses. [192] Less common secondary effects include muscle cramps , decreased heart rate ( bradycardia ), decreased appetite and weight, and increased gastric acid production.

9. Soil pH - Wikipedia

   en.wikipedia.org/wiki/Soil_pH

   Global variation in soil pH. Red = acidic soil. Yellow = neutral soil. Blue = alkaline soil. Black = no data. Soil pH is a measure of the acidity or basicity (alkalinity) of a soil. Soil pH is a key characteristic that can be used to make informative analysis both qualitative and quantitatively regarding soil characteristics.