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Specialty. ophthalmology. [ edit on Wikidata] Artificial tears are lubricating eye drops used to relieve dryness and irritation of the ocular surface. [ 1] Dry eye syndrome ( keratoconjunctivitis sicca) is a common ocular surface disorder and is characterized by disruption of the tear film and increased inflammation. [ 2]
1,3,5-Triazine, also called s-triazine, is an organic chemical compound with the formula (HCN) 3. It is a six-membered heterocyclic aromatic ring, one of several isomeric triazines. S -triazine—the "symmetric" isomer—and its derivatives are useful in a variety of applications.
We can calculate s = tan B/2 = tan (π/4 − A/2) = (1 − r) / (1 + r) from the formula for the tangent of the difference of angles. Use of s instead of r in the above formulas will give the same primitive Pythagorean triple but with a and b swapped.
August 11, 2024 at 9:30 AM. CC Baptiste Boyer/Shutterstock. How in the world did that happen?! That's what we imagine was going through one woman's head when she realized that her orange cat was ...
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). 1,3,5-Trimethyl-1,3,5-triazinane is an organic compound with the formula (CH 3 NCH 2) 3. It is a colorless liquid that is soluble in many organic solvents. Structurally, it is one of several related hexahydro-1,3,5-triazines, which ...
1,3,5-Trichlorobenzene is an organochlorine compound. It is one of the three isomers of trichlorobenzene. Being more symmetrical than the other isomers, it exists as colourless crystals whereas the other isomers are liquids at room temperature. It is not formed upon chlorination of benzene. Instead it is prepared by the Sandmeyer reaction from ...
Infobox references. 1,3,5-Triaza-7-phosphaadamantane ( PTA) is a chemical compound with the formula C 6 H 12 N 3 P, a product of the substitution of a nitrogen atom of hexamethylenetetramine with a phosphorus atom. It is soluble in water, methanol, trichloromethane, acetone, ethanol and DMSO, insoluble in hydrocarbon solvent. [1]
The Formula One World Championship season consists of a series of races, known as Grands Prix, held usually on purpose-built circuits, and in a few cases on closed city streets. [3] The World Drivers' Championship is presented by the FIA to the most successful Formula One driver over the course of the season through a points system based on ...
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