| 单词 | oxidise |
| 例句 | If the wine is left open to air for any length of time, it will begin to oxidise. 23 recipes for leftover wine 2014-05-27T04:00:00Z The mix of green paint with oxidised oil produces a chocolate brown colour. Yellow mellowed 2011-02-14T19:00:00Z Its pigmentation is dense, saturated, making a lichen-coated rock or a scrap of oxidised metal softly luminous. Elegy for the Polaroid 2010-05-29T23:05:00Z The sunlight oxidises the oil in the paint, releasing electrons. Yellow mellowed 2011-02-14T19:00:00Z When I dug it up again, iron filings in the clothes had oxidised and formed a crust. ‘We were let loose’: my art school days, by Peter Blake, Sam Taylor-Johnson, Steve McQueen and more 2020-06-13T04:00:00Z This is due to sex differences between males and females in how readily carbohydrates are used as energy, with females oxidising more fat and less carbohydrate, compared to males, during endurance exercise. Sport gels and protein powders can be convenient boosts for athletes, but be sure to read the label 2023-04-13T04:00:00Z "What we found was that the enzymes alone can oxidise plastic, which is the process that takes such a long time in the environment," he told BBC News. 'Humble' worm saliva can break down tough plastic 2022-10-04T04:00:00Z But a dry, degraded bog – like many in England’s uplands – is a big source of CO2 as the carbon in the bog oxidises. UK peat emissions could cancel forest benefits 2020-08-06T04:00:00Z That’s because when peat is exposed to the air, it oxidises and produces CO2. Call to end the 'abuse' of land surface 2019-08-04T04:00:00Z Specifically, the scientists found cannabinol, a substance produced when THC is oxidised. Earliest known signs of cannabis smoking unearthed in China 2019-06-12T04:00:00Z They are currently being oxidised by deforestation, drainage, drying, burning, farming and mining for gardening and fuel. The natural world can help save us from climate catastrophe | George Monbiot 2019-04-03T04:00:00Z This oxidised oil is almost certainly not good for you in the same way fresh fish is. Is It Time to Give Up on Fish Oil? 2018-03-26T04:00:00Z They also say it ripens faster, and oxidises - or goes that weird shade of brown - slower. 'Diet' avocados launched by Spanish firm 2017-10-12T04:00:00Z Or whether oxygen was in abundance, which is described as oxidising. New candidate for 'missing element' in Earth's core - BBC News 2017-01-09T05:00:00Z Most tellingly, Mr Larsen’s samples contained iron and nickel alloys common in micrometeorites, but rare in Earth-bound rocks because these metals oxidise rapidly. Finding micrometeorites in city gutters 2016-12-10T05:00:00Z Open-pit mining began in the early 20th century when a method was developed to work low grade oxidised copper ores. Satellite Eye on Earth: August 2016 - in pictures 2016-09-28T04:00:00Z They would also be beyond the reach of the oxidising chemicals found in the top layers that would attack living cells. Mars makes closest approach to Earth for 11 years 2016-05-30T04:00:00Z But those pathways depend on there being oxygen around, because they need oxidised forms of nitrogen to work with. The curious lightness of an early atmosphere 2016-05-12T04:00:00Z Hydrogen peroxide, an unstable oxidising agent, then reacts with dye molecules in the sensor, causing them to change colour. How chemists plan to sniff out bombs - BBC News 2015-12-24T05:00:00Z Freezing cold and arid, Mars is a uniform rusty red, coloured by the oxidised iron in its soil. Can Mars One colonise the red planet? 2015-05-30T04:00:00Z “Modified starch” may have been altered in all manner of different ways – oxidised, gelatinised, converted with enzymes, bleached, broken down with acids, bonded with phosphates or even, by toasting it, turned into a sugar. What Makes Baked Beans So Tasty? It's All the Wallpaper Glue 2015-03-06T05:00:00Z Tanks, armoured personnel carriers and transport lorries have been reduced to oxidised carcasses and white ash. Tense Ceasefire in the Hopeless Towns of 'Happiness' and 'Victory' in Ukraine Applying an oxidising potential dissolves the mirror coating by ionising the metallic silver. Glass Switches From Transparent to Reflective Without Drawing On Power [Video] 2014-10-16T04:00:00Z "The methane is dissolving into the ocean at depths of hundreds of metres and being oxidised to CO2," said Prof Skarke. Methane vents bubble up off US coast 2014-08-24T04:00:00Z After that the fat starts to oxidise and the flavour disappears from the meat. What happens if you eat 112 year-old ham? 2014-07-14T04:00:00Z Cassar and his team achieved this breakthrough by enriching cement with titanium oxide minerals, which oxidise with sunlight to break down pollutants before they can bind with the surface and cause discolouration. From Quick Dna Testing To Self Cleaning Concrete, 5 Ideas Competing For The European Inventor Award 2014-06-16T04:00:00Z Lithium-air batteries oxidise lithium at the anode and reduce oxygen at the cathode to induce a current flow. Batteries: Going viral 2013-11-21T16:03:54Z These isotopes are very sensitive to reactions involving oxygen, with the heavier form of the atom, chromium-53, becoming slightly more soluble when oxidised than the lighter chromium-52 type. Ancient soils' early whiff of oxygen 2013-09-25T21:27:16Z It’s only when molybdenum becomes highly oxidised that it is able to influence how early life formed. Earth life 'may have come from Mars' 2013-08-29T00:09:22Z One is that Mars was an initially oxidised planet - that's pretty unlikely. Early Mars atmosphere 'oxygen-rich' 2013-06-19T18:12:10Z On the plus side, coffee is known to be packed full of antioxidants, which stop other molecules oxidising and producing free radicals. How healthy is your coffee? 2013-04-19T09:09:50Z The leader is probably the lithium-air battery, in which metallic lithium is oxidised at the anode and reduced at the cathode. The future of energy: Batteries included? 2013-01-31T16:02:48Z "Over time it becomes a much sweeter smell as it oxidises, but initially it doesn't smell very nice." Rare whale vomit found on beach 2013-01-30T17:28:28Z The globular muscle protein myoglobin, for instance, gives raw meat its characteristic pink colour and oxidises when cooked to become a brownish grey. Fake meat: is science fiction on the verge of becoming fact? 2012-06-22T21:59:00Z Take a bright steel blade, let the surface be oxidised, and the brightness is no longer there, nor is it elsewhere; it is only that the conditions which were resultant in brightness no longer exist. Theological Essays 2012-03-27T02:00:21.867Z Graphite's layers are very close-knit, so acids are used to oxidise the material to graphite oxide, layers of which are more easily separated to form graphene oxide. Production: Beyond sticky tape 2012-03-14T22:50:43.050Z Although this may and does act while the surfaces are still clean, yet the copper soon oxidises, and a poor non-conducting joint is the final result. Electric Bells and All About Them A Practical Book for Practical Men 2012-03-06T03:00:25.273Z There were also some broken case-bottles of glass, oxidised and brittle from long exposure. The Cruise of the 'Alerte' The narrative of a search for treasure on the desert island of Trinidad 2012-02-17T03:00:29.247Z They are very unstable, they contain a lot of metallic iron which oxidises and the meteorite falls to pieces. Doorstep meteorite 'biggest to fall in UK' 2012-02-14T11:42:24Z So the concentrates are passed through great furnaces, in which they are heated in contact with air until these objectionable matters have been oxidised or burnt. Marvels of Scientific Invention An Interesting Account in Non-technical Language of the Invention of Guns, Torpedoes, Submarine Mines, Up-to-date Smelting, Freezing, Colour Photography, and many other recent Discoveries of Science 2011-11-19T03:00:24.517Z If the bleaching effect is due to oxidation, the oxidising power of hypochlorites must be considered to be destroyed by the addition of ammonia. Chlorination of Water 2011-09-13T02:00:32.243Z An extremely thin oxidised film soon forms on the surface of the layer on the slab, and this shields the lower-lying portions of the layer from the air, and retards further oxidisation. Finger Prints 2011-08-07T02:00:07.827Z The footstep is deadened by the dull coloured lead, oxidised from exposure. Wild Life in a Southern County 2011-08-04T02:00:27.037Z Then there was the charm of woodland life reflected in the water; of the landscape repeated below, symmetrical, and sombre in an abyss of oxidised silver. Critical Studies 2011-07-21T02:00:20.463Z Afterwards it was established that the same element possessed an oxidising property. A Treatise on Meteorological Instruments Explanatory of Their Scientific Principles, Method of Construction, and Practical Utility 2011-06-19T02:00:15.717Z That the process was wholly an oxidising one, the work being done entirely by the oxygen set free from the hypochlorous acids in the presence of oxidizable matter.... Chlorination of Water 2011-09-13T02:00:32.243Z The zinc surface becomes oxidised, and the whitish powder which is formed “flakes,” or is carried away by drops of moisture condensing on the surface of the iron sheets. The Preparation of Plantation Rubber 2011-03-09T03:00:40.870Z Explaining these requires new ways of producing oxidising power which do nothing to alter the balance of other chemicals in the atmosphere. Methane on Mars: Now you don't... 2010-12-29T10:57:07Z What I have translated as 'oxidised silver' is in the original 'blackened nickel,' one of those unfortunate, grotesque, inharmonious expressions of which there are many in this work. Critical Studies 2011-07-21T02:00:20.463Z A drawback to the convenience of this barometer is the movement of the mercury in the short limb, which is generally not confined, and hence has every facility for becoming quickly oxidised in travelling. A Treatise on Meteorological Instruments Explanatory of Their Scientific Principles, Method of Construction, and Practical Utility 2011-06-19T02:00:15.717Z The oxidising action of various mixtures of bleach and ammonia as measured by the rate of absorption of the available by the organic matter in the Ottawa River water is shown in Table XXV. Chlorination of Water 2011-09-13T02:00:32.243Z It is observed that this condition under which any tree may yield rapidly oxidising latex is not a permanent one. The Preparation of Plantation Rubber 2011-03-09T03:00:40.870Z Whatever oxidises the methane would itself get used up in the process, and so would also need to be replenished. Methane on Mars: Now you don't... 2010-12-29T10:57:07Z That, in turn, stops them oxidising lipids and opens those cells to lipids’ toxic effects. Metabolic syndrome: A game of consequences? 2010-03-11T10:43:00Z Its oxidising property affords a ready means for its detection, even when the sense of smell completely fails. A Treatise on Meteorological Instruments Explanatory of Their Scientific Principles, Method of Construction, and Practical Utility 2011-06-19T02:00:15.717Z The action of the ammonia on the oxidising power of bleach, as measured by the indigo test, was also found to be disproportionate to the amount added. Chlorination of Water 2011-09-13T02:00:32.243Z Unless this dark surface were carefully cut off, there would result a crepe containing dark streaks caused by the mixture of the oxidised surface portion with the bulk of the paler coagulum. The Preparation of Plantation Rubber 2011-03-09T03:00:40.870Z For producing pointed flames the finer jet of the air-tube must be used, but when a highly oxidising flame of large size is required it must be removed. The Methods of Glass Blowing and of Working Silica in the Oxy-Gas Flame For the use of chemical and physical students Diamond is insoluble in acid and alkalis, but is oxidised on heating with potassium bichromate and sulphuric acid. Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 4 "Diameter" to "Dinarchus" The spring being completely oxidised would not work. Toilers of the Sea Rideal stated that: “It became evident that chlorine, in supplement to its oxidising action, which had been exhausted, was acting by substitution for hydrogen in ammonia and organic compounds, yielding products more or less germicidal.” Chlorination of Water 2011-09-13T02:00:32.243Z To Prevent Oxidation.—As a rule the scraps are picked over, and heavily oxidised pieces are sorted out; otherwise the crepe rubber prepared exhibits black streaks. The Preparation of Plantation Rubber 2011-03-09T03:00:40.870Z On occasion, therefore, apparatus which has become stained with lead during its production, may be rendered presentable by suitable treatment in the oxidising flame. The Methods of Glass Blowing and of Working Silica in the Oxy-Gas Flame For the use of chemical and physical students The rock worn by atmospheric action is no longer rock, the metal which becomes oxidised goes off in rust. Landmarks of Scientific Socialism "Anti-Duehring" When alkaline or earthy citrates are burnt or oxidised in the blood, the citric acid is destroyed, and corresponding carbonates remain. The Bacillus of Long Life a manual of the preparation and souring of milk for dietary purposes, together with and historical account of the use of fermente The nitrogenous components become oxidised, and urea ultimately formed, which being very soluble is freely excreted by the sudorific glands p. 23in the perspiration, and by the kidneys in the urine. Buxton and its Medicinal Waters Under certain conditions some of the lump rubber darkens rapidly during transport to the store, and any such oxidised portions must be rejected if a uniform colour is to be expected in the crepe. The Preparation of Plantation Rubber 2011-03-09T03:00:40.870Z In working with lead glass, therefore, any reduction that occurs should be removed by transferring the glass to the oxidising flame at once. The Methods of Glass Blowing and of Working Silica in the Oxy-Gas Flame For the use of chemical and physical students Here the grey-green and oxidised metal of the 138 marines predominated; there, the conspicuous sage-green and gold of naval aviators. The Crimson Tide A Novel Is this neglect, indifference, obliviousness, or do the authorities believe that the impurities and unsanitary exhalements are sufficiently oxidised to prevent any disease? Gipsy Life being an account of our Gipsies and their children, with suggestions for their improvement It is a powerful oxidising agent and rapidly destroys most bacteria, but tubercle and other acid-fast organisms resist its lethal action for considerable periods, and upon this fact the method is based. The Elements of Bacteriological Technique A Laboratory Guide for Medical, Dental, and Technical Students. Second Edition Rewritten and Enlarged. If this rapidly oxidising latex be mixed with normal latex, it would seem that the whole bulk of the latex is affected by this tendency to rapid oxidation. The Preparation of Plantation Rubber 2011-03-09T03:00:40.870Z If the spot of reduced metal produced in the first experiment be next brought into the oxidising flame, it also may gradually be removed. The Methods of Glass Blowing and of Working Silica in the Oxy-Gas Flame For the use of chemical and physical students When a substance unites with the active chemical element in air—the oxygen gas—it is said to be oxidised. Manures and the principles of manuring We find that some organisms produce as a result of their chemical life material which oxidises and gives out light and so these organisms are "phosphorescent" without any consequence, good or bad, to themselves. More Science From an Easy Chair In addition to the foregoing media, all of which can be, and are employed in the cultivation of anaerobic bacteria, certain special media containing readily oxidised substances are commonly used for this purpose. The Elements of Bacteriological Technique A Laboratory Guide for Medical, Dental, and Technical Students. Second Edition Rewritten and Enlarged. Oxidation Streaks.—Since the introduction of sodium bisulphite defects due to streaks, caused by portions of the coagulum becoming oxidised, have practically ceased to exist. The Preparation of Plantation Rubber 2011-03-09T03:00:40.870Z Fletcher’s Automaton with the large air jet gives a very liberal supply of air, and produces an excellent oxidising brush flame. The Methods of Glass Blowing and of Working Silica in the Oxy-Gas Flame For the use of chemical and physical students An air-blast is injected through the molten mass, and the impurities are burnt, or oxidised as it is chemically termed. Manures and the principles of manuring It is partly derived from the sulphur contained in the albuminous compounds, which is oxidised and converted into sulphuric acid during the process of burning the organic matter, and remains in the ash. Elements of Agricultural Chemistry Sulphindigotate media are of a blue colour, which during the growth of anaerobic bacteria is oxidised and decolourised to a light yellow. The Elements of Bacteriological Technique A Laboratory Guide for Medical, Dental, and Technical Students. Second Edition Rewritten and Enlarged. Neither opposes much obstacle to the entry of the rain into the chalk, where any organic impurity which the water may carry in is soon oxidised and rendered harmless. Fragments of science, V. 1-2 The oxidising point of a pointed flame may be used for both kinds of glass. The Methods of Glass Blowing and of Working Silica in the Oxy-Gas Flame For the use of chemical and physical students We have, first of all, those whose function it is to oxidise the soil ingredients. Manures and the principles of manuring The lighthouse tower is in good order, but the iron roofing of two of the cottages requires renewal, being oxidised and full of perforations. Report on the Department of Ports and Harbours for the Year 1890-91 The object of this process is to oxidise the extraneous metals, and also to reduce the quantity of sulphur, by driving it off in the form of vapour. Chambers's Edinburgh Journal, No. 458 Volume 18, New Series, October 9, 1852 It is only necessary to reduce the bismuth to powder and expose it for a short time to the air to cause the particles to become so far oxidised as to render them perfectly insulating. Fragments of science, V. 1-2 If it loses its transparency and assumes a dull appearance, it must be moved further into the oxidising parts of the flame. The Methods of Glass Blowing and of Working Silica in the Oxy-Gas Flame For the use of chemical and physical students They may assimilate the organic matter of the soil and convert it into carbonic acid gas and water; or, on the other hand, they may oxidise it by giving off oxygen. Manures and the principles of manuring No matter how much food we may eat and perfectly oxidise, there comes a time, nevertheless, when we must go to bed, and not to the dining-room, to recuperate our strength and energies. The Problems of Psychical Research Experiments and Theories in the Realm of the Supernormal Of course some control may be exercised by "soiling" with fireclay or using an oxidising flame; but the erratic behaviour of spelter in this respect is the greatest drawback to its use in apparatus construction. On Laboratory Arts Special organs which do more work would be more quickly consumed: the heart, for example, if entirely unsustained, would be oxidised in about a week. Fragments of science, V. 1-2 The enamel is easily reduced, and must be heated in the oxidising flame. The Methods of Glass Blowing and of Working Silica in the Oxy-Gas Flame For the use of chemical and physical students The second method in which these oxidising organisms act is by giving off oxygen. Manures and the principles of manuring Briefly, they are these: So much food, oxidised or burned outside the body, can be shown to yield so much heat and energy. The Problems of Psychical Research Experiments and Theories in the Realm of the Supernormal A copper deposit oxidises very easily when exposed to the air. On Laboratory Arts Doing an ordinary day's work, for eighty days, this mass of muscle would be wholly oxidised. Fragments of science, V. 1-2 In prolonged operations, in order that reduction may never go too far, hold the glass alternately in the hot reducing flame and in the oxidising flame. The Methods of Glass Blowing and of Working Silica in the Oxy-Gas Flame For the use of chemical and physical students It is possible that gypsum may act as an oxidising agent in the soil, just as iron in the ferric condition does. Manures and the principles of manuring The same foods, oxidised within the body, yield approximately the same amount of energy. The Problems of Psychical Research Experiments and Theories in the Realm of the Supernormal Unfortunately it is apt to oxidise in the air, or rather the manganese it contains does so, so that it wants a very perfect protection against the atmosphere. On Laboratory Arts During the period of turning the machine a certain amount of combustible substance was oxidised or burnt in the muscles of my arm. Fragments of science, V. 1-2 They are finally converted into pentoses by artificial treatments, and into pentosanes in the plant, with loss of 1 C atom in an oxidised form. Researches on Cellulose 1895-1900 The oxidising power of the micro-organisms of soil is not confined to the oxidation of ammonia or of organic matter. Manures and the principles of manuring If the above operation is carried out carefully, the colouring matter will be completely oxidised. The Handbook of Soap Manufacture When taken apart it was found that the tin-foil had oxidised totally and had distributed itself all over the inner surfaces. On Laboratory Arts We also found small shapeless pieces of oxidised metal, brass or copper. Southern Arabia Starch was oxidised with permanganate, and a mixture of products obtained of which one gave a characteristic violet colouration with phloroglucol, with an absorption-band at the D line. Researches on Cellulose 1895-1900 Ammonia, however, can only be oxidised to nitric acid by means of certain powerful oxidising agents, such as ozone or hydrogen peroxide. Manures and the principles of manuring Prolonged agitation with air has a tendency to oxidise the oil, which increases its specific gravity and refractive index, and will be found in the soap-pan to produce a reddish soap. The Handbook of Soap Manufacture The flames produced are the long narrow blow-pipe flames used in blow-pipe analysis, and arranged so as to consist mostly of oxidising flame. On Laboratory Arts Permanganate of potash is a very powerful oxidising agent. The Dyeing of Cotton Fabrics A Practical Handbook for the Dyer and Student The product in question was found to be very sensitive to the action of bases, and was destroyed by the incidental operation of neutralising the mixture of oxidised products with calcium carbonate. Researches on Cellulose 1895-1900 All noble words which describe great qualities get oxidised by exposure to the atmosphere, and rust comes over them, as indeed all good things tend to become deteriorated in time and by use. Expositions of Holy Scripture Second Corinthians, Galatians, and Philippians Chapters I to End. Colossians, Thessalonians, and First Timothy. In the first place, aethereum is quite insensible to the attacks of air and water—it never oxidises, and paint was therefore unnecessary for its preservation. The Log of the Flying Fish A Story of Aerial and Submarine Peril and Adventure For this purpose either energetically reacting, oxidising reducing agents are applied. The Dyeing of Woollen Fabrics The first idea is to get the cotton thoroughly impregnated with the oil, and this oxidised to some extent on the fibre, and to this end the oil treatments are carried out. The Dyeing of Cotton Fabrics A Practical Handbook for the Dyer and Student Cellulose may be regenerated in various ways—viz. by the action of heat, of acids, of various oxidising compounds. Researches on Cellulose 1895-1900 On exposure to the air Valerian oil becomes oxidised, and forms valerianic acid, which together with an alcohol, "borneol," constitutes the active medicinal part of the plant. Herbal Simples Approved for Modern Uses of Cure My observations lead me to believe that the bean does not become oxidised until it is killed, that is, until it is no longer capable of germination. Cocoa and Chocolate Their History from Plantation to Consumer Continued use and the consequent agitation of the vat thereby generated causes it to become oxidised, and the vat acquires a greenish colour, and does not give fast colours. The Dyeing of Woollen Fabrics The most usual oxidising agent employed for dyeing aniline black is bichromate of soda, which salt will be found much better for all purposes than bichromate of potash. The Dyeing of Cotton Fabrics A Practical Handbook for the Dyer and Student The solution takes place more rapidly if the cellulose has been previously oxidised. Researches on Cellulose 1895-1900 Whilst the lead is oxidising it is easily swept round in a bath of molten litharge by merely tilting the crucible. A Text-book of Assaying: For the Use of Those Connected with Mines. All recognise that for this oxidation the presence of three substances is essential: The tannin to be oxidised.Oxygen.An enzyme which encourages the oxidation. Cocoa and Chocolate Their History from Plantation to Consumer When a number of dyeings have been done, it is possible that the vat may become charged with oxidised indigo and lose its clean, yellow colour. The Dyeing of Woollen Fabrics Cottage. the ageing and oxidising machine shown in Fig. The Dyeing of Cotton Fabrics A Practical Handbook for the Dyer and Student In the oxidising processes which follow the alkaline treatments, the hypochlorites are still the staple agents. Researches on Cellulose 1895-1900 It comes down in shaggy tufts which are difficult to wash and easy to oxidise. A Text-book of Assaying: For the Use of Those Connected with Mines. Peroxide of hydrogen sprayed over such wounds is also beneficial in virtue of its oxidising properties. Manual of Surgery Volume First: General Surgery. Sixth Edition. This body is rather unstable, and on exposure to the air it rapidly becomes oxidised and converted back again into the blue indigo. The Dyeing of Woollen Fabrics It follows that when the stomach is filled with fermenting food-stuffs, or the tissues are clogged with the products derived from such, the oxidising action of fruit will be correspondingly intense. The Healthy Life, Vol. V, Nos. 24-28 The Independent Health Magazine The silver is now generally oxidised and much darkened, but when new these bindings must have been very brilliant. English Embroidered Bookbindings Other metals precipitable by sulphuretted hydrogen must be absent as well as strong oxidising agents. A Text-book of Assaying: For the Use of Those Connected with Mines. Beneath this the only sign of weathering apparent in the rock is the rusty hue imparted by the oxidised iron which the percolating rain has leached from iron-bearing minerals. The Birth-Time of the World and Other Scientific Essays To this is then added 1 gallon of either hydrosulphite or bisulphite of soda to destroy the free oxygen it contains, and prevent it from oxidising the indigo solution, which is next added. The Dyeing of Woollen Fabrics Both saccharine and fatty matters are eventually oxidised in the body; and there is an accompanying evolution of heat. Essays on Education and Kindred Subjects Everyman's Library To obtain a total combustion of picric acid it is necessary to mix with it an oxidising agent, such as a nitrate, chlorate, &c. Nitro-Explosives: A Practical Treatise Ferrous compounds are converted into ferric by the action of an oxidising agent in the presence of an acid. A Text-book of Assaying: For the Use of Those Connected with Mines. The change of colour is due to the state of the iron which is less oxidised low down in the soil. The Birth-Time of the World and Other Scientific Essays It must be used immediately to dissolve the indigo; or otherwise, as it is a very unstable body, it is liable to decompose and become oxidised, when it loses its solvent properties. The Dyeing of Woollen Fabrics Many of the best Egyptian bronzes offer a surprising resistance to damp, and oxidise with difficulty. Manual of Egyptian Archaeology and Guide to the Study of Antiquities in Egypt The contents of the tube are filtered and washed, the filtrate is oxidised with permanganate, and the nitrogen determined as nitric oxide by the Schultze-Tieman method. Nitro-Explosives: A Practical Treatise The sulphur and arsenic of such minerals as mispickel and pyrites are oxidised by the hot air and pass off as sulphur dioxide and "white arsenic." A Text-book of Assaying: For the Use of Those Connected with Mines. The third portion, on the other hand, corresponds with the "oxidising" flame of the blow-pipe, since it gives up oxygen to bodies that are thirsting for it. The Story of a Piece of Coal What It Is, Whence It Comes, and Whither It Goes The globules sometimes got oxidised before they became incorporated with the main body of the inflowing molten alloy: and dingy spots in the otherwise brilliant alloy were thus produced. James Nasmyth: Engineer; an autobiography He was a man of fifty, a sort of sea-wolf, with big eyes, a complexion of oxidised copper, red hair and thick neck, and a growling voice. Around the World in 80 Days Following up the idea that an explosion is a sudden combustion, he submitted a variety of mixtures of oxidising and combustible agents to the violent shock of a detonator of fulminate. Nitro-Explosives: A Practical Treatise Indirect Titration.—The action of permanganate of potash upon a ferrous solution is one of oxidation, hence it is evident that if any other oxidising agent is present it will count as permanganate. A Text-book of Assaying: For the Use of Those Connected with Mines. It is by the action upon aniline of certain oxidising agents, that the various colouring matters so well known as aniline dyes are obtained. The Story of a Piece of Coal What It Is, Whence It Comes, and Whither It Goes Even the barren, arid, and windswept eastern slopes glowed bright with the volcanic muds locally called laterites, and the foliated beds of saibros and maçapés, decomposed tufas oxidised red and yellow. To the Gold Coast for Gold A Personal Narrative in Two Volumes.—Volume I A drop of quicksilver oxidises and dims as soon as exposed to the air. Expositions of Holy Scripture: the Acts Thus the ultimate products are phosphoric acid and ferrous chloride, which on exposure to air is oxidised to ferric chloride and oxide. Acetylene, the Principles of Its Generation and Use A Practical Handbook on the Production, Purification, and Subsequent Treatment of Acetylene for the Development of Light, Heat, and Power If this oxidising power is prejudicial, it may be neutralised by mixing the red lead with 1 per cent. of charcoal. A Text-book of Assaying: For the Use of Those Connected with Mines. It is unlikely that such matters would reach the outlet, except in a very finely divided state, when they would be rapidly acted upon by the sea water, which is a strong oxidising agent. The Sewerage of Sea Coast Towns The purest metal oxidises, scum gathers on the most limpid water, every ship's bottom gets foul with weeds. Expositions of Holy Scripture : St. Matthew Chaps. IX to XXVIII A punster would say that he was oxidised, at once. The Love Affairs of Great Musicians, Volume 1 According to Benz the first two do not remove the sulphuretted hydrogen completely, and oxidise the acetylene to some extent; while potassium bichromate leaves some sulphur and phosphorus behind in the gas. Acetylene, the Principles of Its Generation and Use A Practical Handbook on the Production, Purification, and Subsequent Treatment of Acetylene for the Development of Light, Heat, and Power It oxidises most combustible substances with deflagration, and thereby converts sulphides into sulphates, arsenides into arsenates, and most metals into oxides. A Text-book of Assaying: For the Use of Those Connected with Mines. Sometimes, again, the sunset shows a burnished sky, like the surface of old copper burnt or oxidised—the copper tinted with rose, or with rose and violet. The Life of the Fields Its carbon and hydrogen have been given off through the skin and lungs in the form of oxidised products; it is obvious that they have served to support respiration. Familiar Letters on Chemistry It contains four very dark-purple or rather rose-coloured stained leaves, with inscriptions in letters of gold and silver an inch long, the silver being oxidised by age. Studies from Court and Cloister: being essays, historical and literary dealing mainly with subjects relating to the XVIth and XVIIth centuries The gaseous phosphine is not actually spontaneously inflammable at temperatures below 100° C.; but it oxidises so rapidly in air, even when somewhat diluted, that the temperature may quickly rise to the point of inflammation. Acetylene, the Principles of Its Generation and Use A Practical Handbook on the Production, Purification, and Subsequent Treatment of Acetylene for the Development of Light, Heat, and Power About one-quarter of its oxygen is very loosely held, and, hence, is available for oxidising purposes, without any separation of metallic lead. A Text-book of Assaying: For the Use of Those Connected with Mines. If I am not cerebrally oxidised, or oxidally cerebrised, in the right degree, it's all over with my hopes of leading a moral life. Our Friend the Charlatan When the tailings contain a quantity of decomposed pyrites, partly oxidised, the acidity caused by the freed sulphuric acid requires to be neutralised by an alkali, caustic soda being usually employed. Getting Gold: a practical treatise for prospectors, miners and students It is one of the most powerful oxidising agents known, and it doesn't even melt the rest of the steel surface. The Silent Bullet The essential constituent of bleaching-powder from the present aspect is calcium hypochlorite, which readily oxidises sulphuretted hydrogen, and more particularly phosphine, converting them into sulphuric and phosphoric acids, while the acetylene is practically unattacked. Acetylene, the Principles of Its Generation and Use A Practical Handbook on the Production, Purification, and Subsequent Treatment of Acetylene for the Development of Light, Heat, and Power Hot air is the oxidising agent in roasting operations. A Text-book of Assaying: For the Use of Those Connected with Mines. These plants were built almost entirely for war purposes, for the production of ammonia to be oxidised to nitric acid. The Riddle of the Rhine; chemical strategy in peace and war The precipitates are then collected, and after calcination in a special furnace for the purpose of oxidising the zinc, are smelted in the usual manner. Getting Gold: a practical treatise for prospectors, miners and students What happened when the celluloid stud was opened was that the inducive oxidised and became active. The World Set Free The iron thus found is deducted from that taken, and the difference gives the iron oxidised by the chromate. A Text-book of Assaying: For the Use of Those Connected with Mines. The most abundant oxidised ores are the carbonates, malachite and chessylite; the silicates, as also the red and black oxides, occur less abundantly. A Text-book of Assaying: For the Use of Those Connected with Mines. The borax-bead is colourless in the oxidising, and dark-brown in the reducing, flame. A Text-book of Assaying: For the Use of Those Connected with Mines. Even lead can thus be oxidised, but requires more care as it melts nearly as readily as antimony and is much less volatile. Getting Gold: a practical treatise for prospectors, miners and students Cerium is detected by giving with borax a bead which is yellow in the oxidising, and colourless in the reducing flame. A Text-book of Assaying: For the Use of Those Connected with Mines. The two methods are based on the oxidising effect of manganese dioxide; and if the metal does not already exist in this form it will require a preliminary treatment to convert it. A Text-book of Assaying: For the Use of Those Connected with Mines. With grey copper ores and the oxidised ores, iron pyrites is added. A Text-book of Assaying: For the Use of Those Connected with Mines. It is used as an oxidising agent, for determining iron; and as a test solution. A Text-book of Assaying: For the Use of Those Connected with Mines. The same action effects the elimination of the arsenic and antimony associated with gold and silver ores, as when heated to a certain constant temperature these metals readily oxidise. Getting Gold: a practical treatise for prospectors, miners and students But the proportion of sulphur oxidised completely will vary with the conditions of the assay. A Text-book of Assaying: For the Use of Those Connected with Mines. They are easily and completely converted into cupric by oxidising agents. A Text-book of Assaying: For the Use of Those Connected with Mines. Dissolve the precipitate in hydrochloric acid, oxidise with nitric acid, and precipitate with ammonia. A Text-book of Assaying: For the Use of Those Connected with Mines. For oxidised ores, charcoal or tartar is employed as the reducing agent. A Text-book of Assaying: For the Use of Those Connected with Mines. It will be obvious then that the most effective method of roasting will be one that enables the particles to be thoroughly oxidised at the lowest cost in fuel and in the most rapid manner. Getting Gold: a practical treatise for prospectors, miners and students Continue the scorification until a film, green when cold, floating on the surface of the button shows that the nickel is beginning to oxidise. A Text-book of Assaying: For the Use of Those Connected with Mines. The soluble chromates, those of soda and potash, are valuable chemicals, and are largely used in the preparation of pigments, dyeing and tanning, and as oxidising agents. A Text-book of Assaying: For the Use of Those Connected with Mines. In the oxidising flame it gives a colourless or whitish bead. A Text-book of Assaying: For the Use of Those Connected with Mines. Chromic salts are oxidised to chromate by fusion with "fusion mixture" and nitre, or by treating with chlorine in an alkaline solution. A Text-book of Assaying: For the Use of Those Connected with Mines. The arsenide of iron will oxidise first, and when this has ceased the surface of the button brightens. A Text-book of Assaying: For the Use of Those Connected with Mines. This method is more especially adapted for the assay of liquors containing much ferric iron and of those oxidised ores which are completely soluble in hydrochloric acid. A Text-book of Assaying: For the Use of Those Connected with Mines. Filter off the precipitate; wash it into a beaker and pass sulphuretted hydrogen; oxidise the sulphide and weigh as lead sulphate. A Text-book of Assaying: For the Use of Those Connected with Mines. This method, which is the one commonly used, is based on the determination of the amount of ferrous iron oxidised by a known weight of the ore. A Text-book of Assaying: For the Use of Those Connected with Mines. If the solution be evaporated to dryness the oxidising power of concentrated sulphuric acid comes into play, so that very little ferrous iron will be left. A Text-book of Assaying: For the Use of Those Connected with Mines. Continue the action on the water bath till the sulphur and antimony are completely oxidised. A Text-book of Assaying: For the Use of Those Connected with Mines. It is the best acid for dissolving metallic oxides and carbonates, and is always used by the assayer when oxidising agents are to be avoided. A Text-book of Assaying: For the Use of Those Connected with Mines. It combines the properties of an acid and of an oxidising agent. A Text-book of Assaying: For the Use of Those Connected with Mines. Ten c.c. of a solution of permanganate of potash is found to oxidise 10 c.c. of an acid solution of ferrous sulphate. A Text-book of Assaying: For the Use of Those Connected with Mines. When these gases are likely to exert a prejudicial effect, and a strongly oxidising atmosphere is required, the work is best done in a muffle. A Text-book of Assaying: For the Use of Those Connected with Mines. Copper, which is near lead in the facility with which it is oxidised, will serve for the purpose of a detailed example. A Text-book of Assaying: For the Use of Those Connected with Mines. They are then ignited in an oxidising atmosphere at a high temperature for about 10 minutes. A Text-book of Assaying: For the Use of Those Connected with Mines. It is used as an oxidising agent in a similar manner as permanganate and bichromate of potash, especially in the determinations of copper, arsenic, antimony, and manganese. A Text-book of Assaying: For the Use of Those Connected with Mines. How much of the ferrous solution will be oxidised in the second titration? A Text-book of Assaying: For the Use of Those Connected with Mines. It does not occur native, and is generally prepared by the action of an oxidising agent on hydrochloric acid. A Text-book of Assaying: For the Use of Those Connected with Mines. One c.c. of nitric acid contains as much oxygen as 2.56 litres of air, and the greater part of this is available for oxidising purposes. A Text-book of Assaying: For the Use of Those Connected with Mines. The difference in the two titrations, divided by the last and multiplied by 10, will give the c.c. of permanganate solution used in oxidising the organic matter in the 250 c.c. of water. A Text-book of Assaying: For the Use of Those Connected with Mines. Oxides are abundant in nature, almost all the commonly occurring bodies being oxidised. A Text-book of Assaying: For the Use of Those Connected with Mines. This gives with borax a colourless bead in the oxidising, and a green one in the reducing, flame. A Text-book of Assaying: For the Use of Those Connected with Mines. Two grams of tin, oxidised with nitric acid and ignited, gave 2.551 grams of oxide. A Text-book of Assaying: For the Use of Those Connected with Mines. This sulphide may be oxidised with hydrochloric acid and chlorate of potash; and the selenium separated in the manner described. A Text-book of Assaying: For the Use of Those Connected with Mines. This is based on the oxidising action of nitric acid, or of nitrates in acid solutions on ferrous salts. A Text-book of Assaying: For the Use of Those Connected with Mines. Sulphites are of little importance to the assayer, and are converted into sulphates by the action of nitric acid and other oxidising agents. A Text-book of Assaying: For the Use of Those Connected with Mines. The chromates in solution are more stable than other similar oxidising agents, and consequently are generally used in the laboratory as one of the standard oxidising agents for volumetric analysis. A Text-book of Assaying: For the Use of Those Connected with Mines. The antimony is separated as sulphide, redissolved in hydrochloric acid, and oxidised with a crystal of chlorate of potash. A Text-book of Assaying: For the Use of Those Connected with Mines. When the solution becomes concentrated and the temperature rises sufficiently, the sulphur fuses into one or more honey-coloured globules which, owing to the small surface they oppose to the acid, are very slowly oxidised. A Text-book of Assaying: For the Use of Those Connected with Mines. Metallic sulphides when fused with an excess of nitre are completely oxidised. A Text-book of Assaying: For the Use of Those Connected with Mines. The crucible with the mixture is heated at first gently over a Bunsen and afterwards more strongly in an oxidising atmosphere in a muffle or over the blowpipe. A Text-book of Assaying: For the Use of Those Connected with Mines. If the substance contains much iron, the solution is next oxidised by boiling with a little nitric acid; and the iron, alumina, &c., are removed as basic acetates. A Text-book of Assaying: For the Use of Those Connected with Mines. |
| 随便看 |
英语例句辞典收录了117811条英语例句在线翻译词条，基本涵盖了全部常用单词及词组的例句翻译及用法，是英语学习的有利工具。