Kinds of degree of polymerization Mainly, there are two types used to measure the degree of polymerization, number average degree of polymerization and weight average degree of polymerization.

We can start harvesting condensation, and start greening the desert from within.

The condensation of four molecules of acetaldehyde give the cyclic molecule called metaldehyde.

Cationic polymerization of ethylene oxide is assisted by protonic acids (HClO4, HCl), Lewis acids (SnCl4, BF3, etc.

Nearly 600 industrial plants use radioisotopes, e.g. in food irradiation, polymerization, industrial radiography and oil well operations.

It turns out it isn't because of something called film condensation, and this explains that.

Mist is generally formed by condensation of supersatured vapours or by physical shearing of liquids.

There's too many condensation nuclei, so the water droplets do not combine and fall as rain.

Brian R. Greene, David R. Morrison, Andrew Strominger, Black Hole Condensation and the Unification of String Vacua .

Over the years, this shifting has created cracks which permit leakage to occur following condensation or pipe breakage.

This augments the natural process, where sea salt from the oceans provides water vapor with the cloud condensation nuclei.

You're maybe familiar with that, we call that condensation. Whereas likewise if we vaporize it moves up to gas.

You can also see shock condensation clouds around these explosions set off by the United States in Hawai in 1965

In one of the more spectacular condensation reactions, three equivalents of formaldehyde add to MeCHO to give pentaerythritol, C(CH2OH)4.

The Nobel Committee recognized his excellent work on organometallic compounds ...led to new polymerization reactions and ... paved the way for new and highly useful industrial processes .

The moist convection is a phenomenon related to the condensation and evaporation of water and is one of the major drivers of terrestrial weather.

He and T. Komnenos had observed addition products to double bonds as side products earlier in 1883 while investigating condensation reactions of malonic acid with aldehydes.

Scriabin shows more boldness in using the slow movement s theme, and this may have led to further experiments with a condensation of form in the next two sonatas.

The major end uses for germanium in 2007, worldwide, were estimated to be 35 for fiber optic systems, 30 infrared optics, 15 for polymerization catalysts, and 15 for electronics and solar electric applications.

These aerosol particle act particles act as something called cloud condensation nuclei, and, um, this is these are sites where these particles act as sites where cloud drops can form.

This is a result of the higher condensation heat of water and higher water abundance as compared to the ammonia and hydrogen sulfide (oxygen is a more abundant chemical element than either nitrogen or sulfur).

He managed to give a semi quantitative description of the phenomena of condensation and critical temperatures in his 1873 thesis, entitled Over de Continuïteit van den Gas en Vloeistoftoestand (On the continuity of the gas and liquid state).

Publications Research work on synthesis and characterization of macromolecular compounds , Editura Academiei Republicii Socialiste România, 1974 Stereospecific Polymerization of Isoprene , 1982 Nouvelles recherches dans le domaine des composés macromoleculaires , 1984 Dostizheniia v khimii i tekhnologii polimerov , 1988 See also Communist Romania Romanian Communist Party References Bibliography John Sweeney.

References External links Chemical achievers at chemheritage.org Encyclopedia of World Biography on Wallace Hume Carothers National Academy of Sciences Biographical Memoir Patents Alkylene Carbonate and Process of Making It , filed November 1929, issued March 1935 Alkylene Ester of Polybasic Acids , filed August 1929, issued August 1935 Linear Condensation Polymers , filed July 1931, issued February 1937

Acetone and acetic anhydride upon the addition of BF3 catalyst (CH3CO)2O CH3C(O)CH3 CH3C(O)CH2C(O)CH3A second synthesis involves the base catalyzed condensation of acetone and ethyl acetate, followed by acidification NaOEt EtO2CCH3 CH3C(O)CH3 NaCH3C(O)CHC(O)CH3 2 EtOH NaCH3C(O)CHC(O)CH3 HCl CH3C(O)CH2C(O)CH3 NaClBecause of the ease of these syntheses, many analogues of acetylacetonates are known.