A bin of oak leaves, for example, can take as much as three years to decompose completely.
A. Timber shingles can split, detach, decompose or suffer woodpecker attack.
Acids decompose it into lead dioxide and monoxide, and the latter may or may not dissolve to form a salt; red lead may, therefore, be regarded as lead orthoplumbate, Pb2Pb04.
Air and moisture decompose it.
Alkaline hypobromites or hypochlorites or nitrous acid decompose urea into carbon dioxide and nitrogen.
Alkalis decompose it into picro-podophyllic acid and picro-podophyllin, minute traces of both of which occur in a free state in the rhizome.
All carbonates, except those of the alkali metals and of thallium, are insoluble in water; and the majority decompose when heated strongly, carbon dioxide being liberated and a residue of an oxide of the metal left.
As already described, ocean acidity may increase as phytoplankton (and increased marine organisms) decompose.
At the age of nineteen he invented an electromagnetic engine, and in the course of examining its performance dissatisfaction with vague and arbitrary methods of specifying elec rical quantities caused him to adopt a convenient and scie tific unit, which he took to be the amount of electricity req ired to decompose nine grains of water in one hour.
Be sure the bin that you make or buy has ventilation holes in the sides, so your pile gets the air it needs to decompose.
Because disposable diapers can take several hundred years to decompose, many people are turning to cloth diapers.
Before being used the turfy ingredients of composts should lie together in a heap only long enough for the roots of the herbage to die, not to decompose.
Blagden (Ber.,1900,33,p.2544), who consider that three simultaneous reactions occur, namely, the formation of labile double salts which decompose in such a fashion that the radical attached to the copper atom wanders to the aromatic nucleus; a catalytic action, in which nitrogen is eliminated and the acid radical attaches itself to the aromatic nucleus; and finally, the formation of azo compounds.
Chlorine, bromine and iodine decompose arsine readily, the action being most violent in the case of chlorine.
Composting occurs when decayed organic materials decompose to become water and enriched soil.
Consider hiring a shredder for large chunky branches otherwise they'll take a very long time to decompose.
Cork mats are apt to decompose quicker than rubber mats.
Davy, inspired by his successful isolation of the metals sodium and potassium by the electrolysis of their hydrates, attempted to decompose a mixture of lime and mercuric oxide by the electric current; an amalgam of calcium was obtained, but the separation of the mercury was so difficult that even Davy himself was not sure as to whether he had obtained pure metallic calcium.
Gold forms three sulphides corresponding to the oxides; they readily decompose on heating.
Grave markers are usually made of materials that will eventually decompose, such as wooden crosses, or rocks that may be engraved.
He has also found that this action is reversible, for when the area of the surface of contact of the acid and mercury is made to increase, an electric current passes from the mercury to the acid, the amount of electricity which passes while the surface increases by one square centimetre being sufficient to decompose.
His attempts to decompose "alum me, silica, zircone and glucine" were still less fortunate.
However, if these diapers are to decompose, they must be exposed to air and sun, and the plausibility of this is highly unrealistic.
If you add fresh clippings, you're likely to end up with an odor problem because they'll clump together and start to generate an odor before they begin to decompose.
If you are composting, then you will wish to have a bag that will decompose on you quickly.
In 1808 Sir Humphry Davy, fresh from the electrolytic isolation of potassium and sodium, attempted to decompose alumina by heating it with potash in a platinum crucible and submitting the mixture to a current of electricity; in 1809, with a more powerful battery, he raised iron wire to a red heat in contact with alumina, and obtained distinct evidence of the production of an iron-aluminium alloy.
In addition, the plastic in the cartridges could take one thousand years or more to decompose, so whatever you throw away is sure to be around for a long, long time.
In nature, molds decompose paper, wood and leaves.
Inside the home, they can just as easily decompose drywall, carpets, books and other household items.
Instead of being placed in a metal coffin or concrete tomb, people who choose this method of burial are placed in biodegradable containers, which will naturally decompose over time.
Iodine in alkaline solution converts pyrrol into iodol (tetra-iodopyrrol), crystallizing in yellowishbrown needles, which decompose on heating.
It crystallizes in large transparent prisms, which melt on heating and decompose, leaving a residue of metaphosphoric acid, (HP03).
It crystallizes in needles which rapidly decompose when exposed to moist air.
It forms colourless crystals which are soluble in water and decompose on heating, with the formation of nitrogen.
It is simply a case of allowing organic matter, such as vegetable peelings, grass clippings, egg shells, coffee grounds and a wide variety of other items, to decompose.
It separates in the form of small rose-red crystals, which decompose on boiling with water.
It takes over 100 years for traditional chip bags to decompose, and even then they don't fully biodegrade.
It's true, however, that disposable diapers don't decompose easily.
Items that readily decompose - leaves, grass, and vegetable scraps - are broken down by bacteria and other organisms to provide nutrients and structure to the soil.
Just make sure that these items will not flame up as the candle burns down, and will not decompose over time inside the candle.
Leaves and shredded wood mulches decompose fairly quickly and need to be replenished frequently.
Left undisturbed, fallen leaves will gradually decompose and enrich the soil beneath.
Make sure sprouts are dry before you place them in the fridge or they may decompose faster.
Micro-organisms, which degrade other organic substances, will not decompose plastic.
Molten copper absorbs carbon monoxide, hydrogen and sulphur dioxide; it also appears to decompose hydrocarbons (methane, ethane), absorbing the hydrogen and the carbon separating out.
Moreover, these secondary products cannot be successfully reduced, by further heating, to simpler hydrocarbons of any high illuminating value, and such bodies as naphthalene and anthracene have so great a stability that, when once formed, they resist any efforts again to decompose them by heat, short of the temperature which breaks them up into methane, carbon and hydrogen.
Mulch helps the soil retain moisture and stay warmer, which in turn encourages the kitchen waste you mixed with the soil to decompose.
Nitrous acid and chlorine readily decompose them with liberation of iodine; the same effect being produced when they are heated with concentrated sulphuric acid and manganese dioxide.
Now dead animal substance and the excreta of animals decompose in the long run into carbonic acid, water and mineral salts, and so there is a continual destruction of animal substance both on the land and in the sea.
On fusion with caustic alkalis they decompose into their constituent aminothiophenol and acid.
On heating, they decompose, forming basic tetrammine salts.
One of the first discoveries made with it was its power to electrolyse or chemically decompose certain solutions.
Particularly in the summer birds rapidly decompose beyond the point where PM examinations are possible.
Practically any vessel may serve as a receiver - test tube, flask, beaker, &c. If noxious vapours come over, it is necessary to have an air-tight connexion between the condenser and receiver, and to pro vide the latter with an outlet tube leading to an absorption column or other contrivance in which the vapours are taken up. If the substances operated upon decompose when heated in air, as, for example, the zinc alkyls which inflame, the air within the apparatus is replaced by some inert gas, e.g.
Shredded leaves can be used as mulch in flower beds, or they can be added to the compost pile, where they will decompose and can help nourish the flower or vegetable garden later on.
Since many substances decompose either at, or below, their boiling-points under ordinary atmospheric pressure, it is necessary to lower the boiling-point by reducing the pressure if it be desired to distil them.
Since the bacteria that decompose your compost materials need to breathe oxygen, you want to make sure that they get plenty of it.
Since the bags take approximately three years to break down when exposed to the right combination of sunlight, moisture, oxygen and microbial activity they aren't going to begin to decompose right in your kitchen.
So not only do they not clog up landfills and animal habitats, they don't poison their surroundings as they decompose either.
Starting with a solid hydrocarbon of definite composition, it would be theoretically possible to decompose it entirely into carbon, hydrogen, ethylene and methane, and, by rapidly removing these from the heating zone before any secondary actions took place, to prevent formation of tar.
Strong or weak solutions of these substances also decompose it, producing some alkali nitrate and nitrite, the cellulose molecule being only partially restored, some quantity undergoing oxidation.
The continuous wavelet transform is used to decompose the impulse response into the time-scale domain.
The cracking process practically consists in distilling the oils at a temperature higher than the normal boiling point of the constituents which it is desired to decompose.
The crystals so obtained are very unstable and decompose rapidly with evolution of carbon dioxide.
The dithionates are all soluble in water and when boiled with hydrochloric acid decompose with evolution of sulphur dioxide and formation of a sulphate.
The down side of disposable salad containers, however, is the fact that they do not decompose.
The enormous extension of surface also facilitates the absorption of energy from the environment, and, to take one case only, it is impossible to doubt that some source of radiant energy must be at the disposal of those prototrophic forms which decompose carbonates and assimilate carbonic acid in the dark and oxidize nitrogen in dry rocky regions where no organic materials are at their disposal, even could they utilize them.
The essential part of the medicinal treatment of this condition is the administration of iodides, which are able to decompose the insoluble albuminates of lead which have become locked up in the tissues, rapidly causing their degeneration, and to cause the excretion of the poisonous metal by means of the intestine and the kidneys.
The first process never extracts all the bismuth, as much as onethird being retained in the matte or speiss; the second is more satisfactory, since the extraction is more complete, and also allows the addition of reducing agents to decompose any admixed bismuth oxide or sulphide.
The food thus reaches the stomach in large lumps which cannot be readily digested, and either remain there till they decompose and give rise to irritation in the stomach itself, or pass on to the intestine, where digestion is likewise incomplete, and the food is ejected without the proper amount of nourishment having been extracted from it; while at the same time the products of its decomposition may have been absorbed and acted as poisons, giving rise to lassitude, discomfort, headache, or perhaps even to irritability and sleeplessness.
The larger the material, the longer it take to decompose.
The magnesite (a) serves for the generation of carbon dioxide which clears the tube of air before the compound (mixed with fine copper oxide (b)) is burned, and afterwards sweeps the liberated nitrogen into the receiving vessel (e), which contains a strong potash solution; c is coarse copper oxide; and d a reduced copper gauze spiral, heated in order to decompose any nitrogen oxides.
The metallic salts all crystallize in the anhydrous condition and decompose on heating, leaving a residue of the pure metal.
The salt must therefore be derived from an acid, chloroplatinic acid, H 2 PtC1 6, and have the formula Na 2 PtC1 6, the ions being Na and PtCls", for if it were a double salt it would decompose as a mixture of sodium chloride and platinum chloride and both metals would go to the cathode.
The salts are unstable and readily decompose when heated.
The salts of bismuth are feebly antiseptic. Taken internally the subnitrate, coming into contact with water, tends to decompose, gradually liberating nitric acid, one of the most powerful antiseptics.
The solution of sodium aluminate, containing aluminium oxide and sodium oxide in the molecular proportion of 6 to 1, is next agitated for thirty-six hours with a small quantity of hydrated alumina previously obtained, which causes the liquor to decompose, and some 70% of the aluminium hydroxide to be thrown down.
The substances which we at present term anhydrous acids (acid oxides) only become, for the most part, capable of forming salts with metallic oxides after the addition of water, or they are compounds which decompose these oxides at somewhat high temperatures."
The tellurides of the alkali metals immediately decompose on exposure to air, with liberation of tellurium.
The want of chlorophyll restricts their mode of life - which is rarely aquatic - since they are therefore unable to decompose the carbon dioxide of the atmosphere, and renders them dependent on other plants or (rarely) animals for their carbonaceous food-materials.
The work of van Tieghem, van Senus, Fribes, Omeliansky and others has now shown that while certain anaerobic bacteria decompose the substance of the middle lamella - chiefly pectin compounds - and thus bring about the isolation of the cellulose fibres when, for instance, flax is steeped or " retted," they are unable to attack the cellulose itself.
Their quantitative experiments were, however, too rough to permit of accurate generalization; and although Lavoisier and Laplace stated the principle that the same amount of heat must be supplied to decompose a compound as would be produced on its formation, the statement was not based on exact experiment, and only received experimental confirmation much later.
There exist in the mud of marshes, rivers and cloacae, &c., however, other anaerobic bacteria which decompose cellulose, probably hydrolysing it first and then splitting the products into carbon dioxide and marsh gas.
There is, in addition, a series of bacteria which decompose sulphureous compounds and utilize the element thus liberated in their protoplasm (see Bacteriology).
These forms are termed by Fischer Metatrophic, because they require various kinds of organic materials obtained from the dead remains of other organisms or from the surfaces of their bodies, and can utilize and decompose them in various ways (Polytrophic) or, if monotrophic, are at least unable to work them up. The true parasites - obligate parasites of de Bary - are placed by Fischer in a third biological group, Paratrophic bacteria, to mark the importance of their mode of life in the interior of living organisms where they live and multiply in the blood, juices or tissues.
They form yellow or bronze-coloured crystals, which decompose on boiling their aqueous solution.
They readily decompose on heating, and are easily hydrolysed by alkalies; they possess a somewhat more acid character than.
This helps it decompose quickly and with little odor.
This method is adopted for substances which decompose at their boiling-points under ordinary pressure, and, generally, when it is desirable to work at a lower temperature.
This will help them decompose more quickly than if you add them to the pile intact.
Those derived from monobasic acids, obtained by the action of acid chlorides or anhydrides on urea, decompose on heating and do not form salts.
To prevent this, you heat the solution for some time to decompose the hydrogen peroxide into water and oxygen before adding the acid.
Unlike conventional mulch, rubber mulch does not decompose readily into the soil.
Vegetable refuse of all kinds, when smother-burned in a similar way, becomes a valuable mechanical improver of the soil; but the preferable course is to decompose it in a heap with quicklime and layers of earth, converting it into leaf-mould.
Water and the caustic alkalis readily decompose it with liberation of phosphine and the formation of iodides or hydriodic acid.
When strongly heated they decompose, forming fatty acids, nitrogen peroxide and nitrogen.
When these organic materials decompose in the anaerobic environment of a landfill, a significant amount of methane is released into the environment.
When they are packed in plastic bags they take many years to decompose.
While the color of the rubber mulch can fade or change over time, it doesn't decompose.
Worms and beneficial fungi help plant material to decompose.