The U. S. Food and Drug Administration calls this " sweet chocolate ", and requires a 15 % concentration of chocolate liquor.

For a situation where the traffic to be handled is completely new traffic, the only choice is to try to model expected user behavior, estimating active user population, N, expected level of use, U ( number of calls / transactions per user per day ), busy-hour concentration factor, C ( proportion of daily activity that will fall in the busy hour ), and average holding time / service time, h ( expressed in minutes ).

Slightly enriched uranium ( SEU ) has a < sup > 235 </ sup > U concentration of 0. 9 % to 2 %.

Low-enriched uranium ( LEU ) has a lower than 20 % concentration of < sup > 235 </ sup > U.

For use in commercial light water reactors ( LWR ), the most prevalent power reactors in the world, uranium is enriched to 3 to 5 % < sup > 235 </ sup > U. Fresh LEU used in research reactors is usually enriched 12 % to 19. 75 % U-235, the latter concentration being used to replace HEU fuels when converting to LEU.

Highly enriched uranium ( HEU ) has a greater than 20 % concentration of < sup > 235 </ sup > U or < sup > 233 </ sup > U. The fissile uranium in nuclear weapons usually contains 85 % or more of < sup > 235 </ sup > U known as weapon ( s )- grade, though for a crude, inefficient weapon 20 % is sufficient ( called weapon ( s )- usable ); in theory even lower enrichment is sufficient, but then the critical mass for unmoderated fast neutrons rapidly increases, approaching infinity at 6 % < sup > 235 </ sup > U. For criticality experiments, enrichment of uranium to over 97 % has been accomplished.

This hair was used " in the manufacture of hair-yarn socks for ' U '- boat crews and hair-felt foot-wear for the Reichs-railway ", to quote from a directive sent to all concentration camp commanders in 1942.

U. S. Army soldiers show the German civilians of Weimar the corpses found in Buchenwald concentration camp.

A number of films showing the concentration camps were made and screened to the German public, such as Die Todesmühlen, released in the U. S. zone in January 1946, and Welt im Film No. 5 in June 1945.

President Obama mentioned during his visit that he had heard stories as a child from his great uncle, whom was part of the U. S. 89th Infantry Division, the first Americans to reach a concentration camp of Ohrdruf, one of Buchenwald's sub-camps.

This increased the concentration of TCDD many times more than other types of pesticides that were being used by U. S. farmers.

In the U. S., there are Zimbabwean marimba bands in particularly high concentration in the Pacific Northwest, Colorado, and New Mexico, but bands exist from the East Coast through California and even to Hawaii and Alaska.

In response, on August 19, Vandegrift sent three companies of the U. S. 5th Marine Regiment to attack the Japanese troop concentration west of the Matanikau.

Shortly after he volunteered for the U. S. Army in February 1942, Munemori's parents and siblings were incarcerated at the Manzanar concentration camp for Japanese Americans.

Nevertheless, the treaty, passed by Congress by a single vote, and signed into law by President Andrew Jackson, was imposed by his successor President Martin Van Buren who allowed Georgia, Tennessee, North Carolina, and Alabama an armed force of 7, 000 made up of militia, regular army, and volunteers under General Winfield Scott to round up about 13, 000 Cherokees into concentration camps at the U. S. Indian Agency near Cleveland, Tennessee before being sent to the West.

Among the specialists in the latter field who ended up working in the U. S. were Walter Schreiber, Erich Traub and Kurt Blome, who had been involved with medical experiments on concentration camp inmates to test biological warfare agents.

According to the 2010 U. S. Religious Census, Marion County had the highest concentration of followers of the Bahá ' í Faith of any county in the United States, at 5. 5 %.

The district is now mainly commercial, with many offices in converted houses and new buildings, including major corporate headquarters, a concentration of hedge funds, real estate businesses and many different embassy offices, namely the U. S .' s large office taking up all the west side of Grosvenor Square.

Over its 30-year operation, U. S. $ 200 million in ore was extracted from the mine, making it the richest concentration of copper ore in the world.

During World War II, the outskirts of McGehee was the site of an American concentration camp used to house Japanese and Japanese-American civilians who had previously lived on the U. S. West Coast.

At 27. 7 % this was the highest concentration of any city in the U. S. except for neighboring Westminster.

Kendall West is home to a large concentration of Colombians and Colombian Americans in the U. S. Given the local name " Little Bogota ".

The aborigines fastened upon it with a concentration beyond pathos.

You don't need concentration.

But his concentration on personalities and his categorical assessment of their actions fail to convey the political complexities of a long generation harassed by world-wide war and confronted with the problem of adjustment to an unprecedented industrial and social transformation.

and in these days this inevitably means a concentration on the effects of the Cuban revolution.

Then Laura took her gently and shoved her off again, toward Fritzie: Amy did not laugh -- this was work, concentration, achievement.

A bevy of interlacing lagers, work camps, concentration camps erupted in the area.

This work will cover the most serious one-fourth of all land needing such treatment, and will consist of burning 250,000 acres of highly hazardous debris concentration, felling snags on 350,000 acres of high lightning-occurrence areas, prescribed burning on 3.5 million acres, removing roadside fuel on 39,000 acres, and clearing and maintaining 11,000 miles of firebreaks.

It has been correctly pointed out by well-informed people in the industry that it is probably unrealistic to expect a continuation of the yearly growth of 15% or better that characterized the decade of the 1950's, and that our military markets may be entering upon a new phase in which procurement of multiple weapons systems will give way to concentration of still undeveloped areas of our defense capability.

( Note how strongly the upper lats and serratus are worked in this fine exercise because of the pin-point concentration of force which the dumbbell variation affords ).

Market concentration and distribution in fewer accounts.

This method can be extended to include the concentration differences caused by shear fields.

Stains, which include the wide variety of nonparticulate materials which give color even when present in very low concentration on the soiled object.

Physicochemical investigations of anionic surfactants, including the soaps, have shown that there is little polymerization or agglomeration of the chain anions below a certain region of concentration called the critical micelle concentration.

( 1 ) Below the critical micelle concentration, monomers and some dimers are present.

In most cases the chlorine concentration was about Af.

-- Although there was some variation in results which must be attributed either to trace impurities or to variation in wall effects, the photochemical exchange in the gas phase was sufficiently reproducible so that it seemed meaningful to compare the reaction rates in different series of reaction tubes for the purpose of obtaining information on the effect of chlorine concentration and of carbon tetrachloride concentration on the reaction rate.

Also, planetary gravitational attraction increases the dust concentration near the plane of the ecliptic as the sun is approached.

The data for the first day indicate a meteor stream with a very high concentration of particles and may have led to the high estimates of micrometeorite flux.

A concentration distribution has been derived from radar observations sensitive to the fifteenth magnitude ( Manning and Eshleman, 1959 ).

The observational data determining the concentration distribution have a range of error which is magnified in the extension into the micrometeorite region.

For protein identification, fractions from the column were concentrated by pervaporation against a stream of air at 5-degrees-C or by negative pressure dialysis in an apparatus which permitted simultaneous concentration of the protein and dialysis against isotonic saline.

They were then centrifuged at 59,780 Pm for 35 to 80 min at 20-degrees-C in a Spinco model E ultracentrifuge at a protein concentration of 1.00 to 1.25%.

Moreover, after concentration using negative pressure dialysis, agglutinin activity could sometimes be detected in the region designated 2a ( donors P. J., D. A., and J. F., Fig. 1 ).