Autumn

Lewis N S 1996 Photoeleotroohemistry—energy oonversion using semioonduotor eleotrodes ECS Inferfaoe Autumn, 28... 

Some nut trees accumulate mineral elements. Hickory nut is notable as an accumulator of aluminum compounds (30) the ash of its leaves contains up to 37.5% of AI2O2, compared with only 0.032% of aluminum oxide in the ash of the Fnglish walnut s autumn leaves. As an accumulator of rare-earth elements, hickory greatly exceeds all other plants their leaves show up to 2296 ppm of rare earths (scandium, yttrium, lanthanum, dysprosium, holmium, erbium, thulium, ytterbium, and lutetium). The amounts of rare-earth elements found in parts of the hickory nut are kernels, at 5 ppm shells, at 7 ppm and shucks, at 17 ppm. The kernel of the Bra2d nut contains large amounts of barium in an insoluble form when the nut is eaten, barium dissolves in the hydrochloric acid of the stomach. 

By way of comparison, for natural grass playing fields in late autumn ranges from about 75 for wet fields to 280 for fro2en turf (8). The intermediate values observed depend on soil type, moisture, condition, and other variables. 

From the viewpoint of air pollution, both stable surface layers and low-level inversions are undesirable because they minimize the rate of dilution of contaminants in the atmosphere. Even though the surface layer may be unstable, a low-level inversion will act as abarrier to vertical mixing, and contaminants will accumulate in the surface layer below the inversion. Stable atmospheric conditions tend to be more frequent and longest in persistence in the autumn, but inversions and stable lapse rates are prevalent at all seasons of the year. 

It was determined KMnO -oxidability (COD-KMnO ) of water of eity reservoirs of Astrakhan during the autumn-winter period of 2004. It is revealed, that oxidability of natural waters does not exeeed the values allowable for reservoirs fish-value. 

As follows from the reeeived data, toxieity of water is high and is a little redueed during the autumn-winter period. 

The main agents of these losses are the microbes and small animals, such as springtails and mites, that inhabit the soil. These feed on organic matter that contains carbon and nitrogen and produce carbon dioxide and ammonium ions as waste products. Other bacteria convert the ammonium to nitrate. Like most of us, these organisms are most active when the conditions suit them best, and their preferred options are warmth and moisture. In early autumn, the soil is still warm... 

One noteworthy application announced in the Autumn of 1998 was the use of PHBV for biodegradable credit cards issued by at least one bank and one major conservation organisation. 

For reasons of hygiene, the filter should be replaced after the pollen and spore season in the autumn. In the case of high demand, filters can also be changed in the spring after the heating season to eliminate odorous combustion products. 

A gas turbine CHP. scheme which operates at Liverpool University, UK, consists of a Centrax 4 MW (nominal) gas turbine with an overall efficiency of about 0.27, exhausting to a WHB. The plant meets a major part of the University s heat load of about 7 MW on a mild winter s day. Supplementary firing of the WHB (to about 15 MW) is possible on a cold day. Provision is al.so made for by-passing the WHB when the heat load is light, in spring and autumn,. so that the plant can operate very flexibly, in three modes viz., power only, recuperative and supplementary firing. 

Process Safety News, No. 3, Chilworth Technology, Southampton, UK, Autumn 1996AVinter 1997, p. 1. 

Harris, R. J., and M. J. Wickens. 1989. Understanding vapor cloud explosions—an experimental study. 55th Autumn Meeting of the Institution of Gas Engineers, Kensington, UK. 

The active principle of the autumn crocus (Colchicum autumnale), colchicine (48), is one of the very few drugs that have remained in reputable medical use since ancient times. This drug was the only useful treatment available for the excruciating pain associated with crystallization of uric acid in the joints characteristic of gout until the advent of allopurinol. Although the precise mechanism by which colchicine gives this dramatic relief remains undefined, the antimitotic activity of this agent is... 

Herberge, /. inn shelter, herblich, a. sourish, subacid somewhat harsh. Berbst, m. autumn, -rose, /. hollyhock, -zeit-lose, /. meadow saffron. 

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