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However, silica fume is more usually added to Portland cement at the concrete mixer.
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However and silica
However, instead of using a stationary phase of paper, it involves a stationary phase of a thin layer of adsorbent like silica gel, alumina, or cellulose on a flat, inert substrate.
However, for the best color, iron-containing impurities need to be minimized in the silica used to make the glass.
However, a further saturation of solution with silica impedes hydrolysis and causes the glass to return to an ion-exchange, e. g. diffusion-controlled regime of corrosion.
However, magmas containing less than 58 % SiO < sub > 2 </ sub > are thought to be unlikely to contain crystalline silica.
However, when hydrophobic groups ( such as C < sub > 18 </ sub > groups ) are attached to the silica gel then polar components elute first and the method is referred to as reverse phase chromatography.
However, the Australian version contains kaolin and quartz instead of silica for abrasives.
However, the process of its formation is not simple, the oxidation of copper sulfides should be insufficient to crystallize dioptase as silica is normally minutely soluble in water except at highly alkaline pH.
However, in dry climates and with enough time, especially in areas of a mineral deposit where acids are buffered by carbonate, minute quantities of silica may react with dissolved copper forming dioptase and chrysocolla.
However and is
However, the system is designed, ingeniously and hopefully, so that no one man could initiate a thermonuclear war.
However, there is always the possibility that chance will make demands the dancers find impossible to execute.
However, it is important to trace the philosophy of the French Revolution to its sources to understand the common democratic origin of individualism and socialism and the influence of the latter on the former.
However, it was not of innocence in general that I was speaking, but of perhaps the frailest and surely the least important side of it which is innocence in romantic love.
However, neither of these two cities is on the desired July 1 to June 30 fiscal year.
However, there is a more profound consideration to this proposed merger than profit and loss.
However, if their United States income is not subject to the withholding of tax on wages, their returns are due June 15, 1962, if they use a calendar year, or the 15th day of the 6th month after the close of their fiscal year.
However, its modern one-story layout is designed to increase our production capacity, permit more efficient manufacturing, and substantially reduce current repair and maintenance costs.
However, because this vulnerability is mutual, it is to the advantage of neither side to destroy the opponent's cities, at least so long as the opponent has nuclear weapons with which to effect reprisal.
However, there is a minimum of legislative restriction on boating.
However, it is essential that the various mathematical symbols used in the equations be understood so that the mathematical processes can be done properly and in their correct order.
However, the use of tripods is not allowed.
However, there is also much to be gained by making use of the abilities of the local people who are available and interested in recreation.
However, that is not all he has to do.
However one looks at it, therefore, I'd say that your horoscope for this autumn is the reverse of rosy.
However, a major factor in binding dirt is the attraction between surfaces that goes under the name of Van der Waal's forces.
However, the conversion from mass to size is unreliable, since many photographic meteors give evidence of a fluffy, loosely bound meteorite structure with densities as low as Af.
However, as a field measurement, it is open to question.
However, this artery is known to be a nutrient vessel with a distribution primarily to the proximal airways and supportive tissues of the lung.
However, if there is no additional complex of singular lines, the order of the image regulus of a pencil is precisely Af.
However, the factor of physical isolation is not a static situation.
However, any such suggestion accounts for only some of the difficulties in hearing tone, or in developing a realistic attitude about tone, but not for the analytic difficulties that occur even when tone is meticulously recorded.
However, there always is some limit to the numbers who will spend the time and effort to acquire training.
However and more
However, some formulas are used more than others.
However, if these procedures are applied more often, conditioned emotional responses are temporarily abolished.
However, because of Church laws, lately more stringently enforced, which forbid the marriage of cousins closely related consanguineously, a means of facilitating the goal of in-group relations may be that of recourse to illegitimate unions.
However well chosen and cleverly arranged, such memorabilia unfortunately amounted to more of an interruption than an auxiliary to the evening's main business, which ( considering the talent at hand ) should probably have been the gathering of fresh samples of the Chicago style.
However, he thinks we should love God more than ourselves and our neighbours, and more than our bodily life — since the ultimate purpose of loving our neighbour is to share in eternal beatitude: a more desirable thing than bodily well being.
However, in contexts where " amoeboid " is defined more loosely, there are many amoeboid species that are in the Excavata clade.
However, such apparent simplifications can perversely make a script more complicated.
However Juhanen ( 1992 ) is skeptical about an affiliation of Japanese to Altaic languages, while Róna-Tas ( 1998: 77 ) remarked that a relationship between Altaic and Japanese, if it ever existed, must be more remote than the relationship of any two of the Indo-European languages.
However it is in its proper sense, in which it indicates national character and the subjection due to that character, that the word is more important.
However, anxiety should not be confused with fear, it is more of a dreaded feeling about something which appears intimidating and can overcome an individual.
However, this has now been replaced by a more professional exhibition space incorporating laser, video, slide shows, audio commentaries, and some interactive elements.
However, as more and more deaths quickly ensue, it becomes apparent that there is an epidemic.
However a comparable performing digital system is more complex and can require more bandwidth than its analog counterpart.
However, the availability of commercially farmed abalone has allowed more common consumption of this once rare delicacy.
However, Odysseus proves to be more eloquent, and the council gives him the armor.
However, Wolfram points out that at the time " Clovis got no farther than the Seine ; only after several more years did the Franks succeed in occupying the rest of the Gallo-Roman buffer state north of the Loire.
However, Amasis was later faced with a more formidable enemy with the rise of Persia under Cyrus who ascended to the throne in 559 B. C. E.
However, more vital propositions, such as Hume's argument for the role of habit in a theory of knowledge, are retained.
However, further experience takes these equal chances, and forces the imagination to observe that certain chances arise more frequently than others.
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