| 单词 | Mg |
| 例句 | Then the beastly uncertainty as to whether Mg++ ions were important could vanish. Double Helix 1968-02-27T00:00:00Z As to the forces that held the chains together, the best guess seemed to be salt bridges in which divalent cations like Mg++ held together two or more phosphate groups. Double Helix 1968-02-27T00:00:00Z She became positively aggressive when we got on the topic of Mg++ ions that held together the phosphate groups of our three-chain model. Double Helix 1968-02-27T00:00:00Z The saint drank a Mg gulp of his white whisky and spat in the fire. The Once and Future King 1958-01-01T00:00:00Z A high value, if found, would strongly suggest binding of Mg++ to DNA. Double Helix 1968-02-27T00:00:00Z How Mg** ions might be used to bind negatively charged phosphate groups in the center of a compound helix. Double Helix 1968-02-27T00:00:00Z By then we knew that all my previous fuss about the importance of Mg++ ions was misdirected. Double Helix 1968-02-27T00:00:00Z However, in 2015, independent research that looked at all available atmospheric measurements estimated the atmospheric mercury reservoir was about 4,000 Mg -- nearly 7 times larger than the natural condition estimated in this study. Human emissions increased mercury in the atmosphere sevenfold 2023-11-01T04:00:00Z You can adjust the amounts of N, P, K, Ca, Mg, and Fe that plants receive . . . and see what happens. Fundamentals of Biology 2015-01-01T00:00:00Z About twice as much energy is needed to pull apart a nucleus like 24 Mg compared with pulling apart 12 C , for example. College Physics for AP Courses 2015-08-12T00:00:00Z The driving force for such oxidations is similar to that of alkaline earth metals such as Be or Mg, forming Be2+ and Mg2+. Chemistry 2019-02-14T00:00:00Z Such conditions are often difficult to model in the laboratory, where competence can be induced by high concentrations of divalent cations, Ca+2 or Mg+2, or electrical shock. Biology for AP Courses 2022-06-09T00:00:00Z The formula for this particular olivine, which has three Fe ions for each Mg ion, could be written: Mg0.5Fe1.5SiO4. Physical Geology 2015-01-01T00:00:00Z Fifty percent of Cl– and variable quantities of Ca++, Mg++, and HPO2 − are also recovered in the PCT. Anatomy and Physiology 2013-06-19T00:00:00Z Do the organizers “want to see businesspeople washing the blood of our hero with alcohol?” one critic, U Tin Mg Htut, asked in a Facebook post. Myanmar’s Hero Was Killed Here. Now U.S. Brands Are Setting Up Stalls. 2019-02-05T05:00:00Z Metals that crystallize in an HCP structure include Cd, Co, Li, Mg, Na, and Zn, and metals that crystallize in a CCP structure include Ag, Al, Ca, Cu, Ni, Pb, and Pt. Chemistry 2019-02-14T00:00:00Z Liu, Y., Merinov, B. V. & Goddard, W. A. Origin of low sodium capacity in graphite and generally weak substrate binding of Na and Mg among alkali and alkaline earth metals. Monolayer atomic crystal molecular superlattices 2018-03-06T05:00:00Z "I'm in debt to the agency for about $1,000," says Mg Yin Mg, one of the housekeeping staff on the ship. The Maritime Industry's Unsteady Waters 2016-07-12T04:00:00Z The technology, such as it is, dates back about 85 years and is commonly attributed to a mechanic, Mg Nyeit, who sought to devise a cheaper mode of transport to compete with trains. In Myanmar, sidecars still a popular mode of transport 2015-04-06T04:00:00Z “We’re suffering here. We want to go back to our homes,” said Thin Mg, 44, who had a small goods-trading business before the violence displaced his family. Malnutrition, disease rising in camps of Burma’s Rohingya Muslims Mg, In, Cs, Pb, and Co would form cations because they are metals. Chemistry 2019-02-14T00:00:00Z Fourth, denuding particles of volatile components does not purify BC because soot coagulates with many particles that contain involatile material, such as Na, Mg, Ca, K, Si, Fe, Al, and others. [Technical Comment] Comment on "Radiative Absorption Enhancements Due to the Mixing State of Atmospheric Black Carbon" 2013-01-24T20:55:16.103Z The one other thing I would add is that the Mg/Ca and alkenone unsaturation records show quite clearly in the time domain that systematic glacial cooling occurred throughout the Pleistocene. Dot Earth Blog: On the Climate High End, Methane Time Bombs and the Lure of the New 2011-12-02T19:50:24Z We have seen that the change of s to ś occurs in Bengali but not in Bihari, and have given reasons for the change back to s in the latter language, although the Mg. Encyclopaedia Britannica, 11th Edition, Volume 3, Slice 7 "Bible" to "Bisectrix" 2010-12-20T17:12:05.780Z In all of these compounds, derived from chlorophylls by the action of alkalies, the Mg remains in the molecule, and all the Mg-containing derivatives from the chlorophylls are known as "phyllins." The Chemistry of Plant Life Calculate the average mass of a Mg atom. Chemistry 2019-02-14T00:00:00Z The formula for the weight of a drop is then simply Mg = 3.8Ta, Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 3 "Capefigue" to "Carneades" The Mg/Ca estimates of tropical ocean cooling would be nearly impossible to reconcile with a global sensitivity of 2.3 degrees. Dot Earth Blog: On the Climate High End, Methane Time Bombs and the Lure of the New 2011-12-02T19:50:24Z The old present and imperative, derived from the Mg. Encyclopaedia Britannica, 11th Edition, Volume 3, Slice 7 "Bible" to "Bisectrix" 2010-12-20T17:12:05.780Z M remains constant while Mg is less than in a vacuum. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 5 "Clervaux" to "Cockade" Based on their positions in the periodic table, list the following atoms in order of increasing radius: Mg, Ca, Rb, Cs. Chemistry 2019-02-14T00:00:00Z On the meta level the contained bodies, a triplet, Mg a, a septet, Mg b, and a duad, Mg c, are set free from each globe, thus yielding one hundred and eight meta compounds. Occult Chemistry Clairvoyant Observations on the Chemical Elements Let us see why the atom of Mg unites with two Cl atoms, while that of Na takes but one. An Introduction to Chemical Science The meaning, therefore, of the change from western Pr. r to Mg. Encyclopaedia Britannica, 11th Edition, Volume 3, Slice 7 "Bible" to "Bisectrix" 2010-12-20T17:12:05.780Z There are a few additional optional forms, but nothing like the multiplicity of meanings which we find in Mth. and Mg. Encyclopaedia Britannica, 11th Edition, Volume 3, Slice 7 "Bible" to "Bisectrix" 2010-12-20T17:12:05.780Z Electrodes constructed from a member of the redox couple, such as the Mg anode in this cell, are called active electrodes. Chemistry 2019-02-14T00:00:00Z Occurrence and Preparation.—Mg is very widely distributed, but does not occur uncombined. An Introduction to Chemical Science The element Mg, however, has two such bonds, as Mg= or -Mg-. An Introduction to Chemical Science In Mth. the nominative plural is also the oblique form of the genitive singular, and in Bh. and Mg. it is the oblique form of the genitive plural. Encyclopaedia Britannica, 11th Edition, Volume 3, Slice 7 "Bible" to "Bisectrix" 2010-12-20T17:12:05.780Z What proportion of the earth's crust is composed of Mg? An Introduction to Chemical Science Which of the following atoms would be expected to form negative ions in binary ionic compounds and which would be expected to form positive ions: P, I, Mg, Cl, In, Cs, O, Pb, Co? Chemistry 2019-02-14T00:00:00Z Experiment 120.—With forceps hold a short strip of Mg ribbon in a flame. An Introduction to Chemical Science When Mg unites with Cl, in order to balance, or saturate, the bonds, it is evident that two atoms of Cl must be used, as Cl-Mg-Cl, or MgCl2. An Introduction to Chemical Science In Mth. and Mg. this distinction applies not only to the subject but also to the object, so that for each person there are, in the first place, four groups of forms, viz.:— Encyclopaedia Britannica, 11th Edition, Volume 3, Slice 7 "Bible" to "Bisectrix" 2010-12-20T17:12:05.780Z Photographs of the interior of caverns, where sunlight does not penetrate, are taken by Mg light. An Introduction to Chemical Science Gun-cotton sprinkled with powdered Mg has recently been employed for that purpose. An Introduction to Chemical Science In the same way Si, B, K, Na, Ca, Mg, Cr, have recently been reduced from their oxides; but a process has yet to be found for separating them easily from their alloys. An Introduction to Chemical Science Mg would withdraw Zn from a similar solution, and be in its turn withdrawn by Na. An Introduction to Chemical Science Mg. closely follows this, but the forms are more abraded. Encyclopaedia Britannica, 11th Edition, Volume 3, Slice 7 "Bible" to "Bisectrix" 2010-12-20T17:12:05.780Z The principle is much like crystallizing NaCl from solution and leaving behind the salts of Mg, etc., in the mother liquor. An Introduction to Chemical Science Silicates of Al, Fe, Ca, K, Na, and Mg are most common, and these metals, in the order given, rank next in abundance. An Introduction to Chemical Science Hard water contains salts of Ca and Mg, and when soap is used with it the Na is at once replaced by these metals, and insoluble Ca or Mg soaps are formed. An Introduction to Chemical Science Uses.—Na is used to reduce Al, Ca, Mg, Si, which are the most difficult elements to separate from their compounds. An Introduction to Chemical Science Bh. conjugation is as simple as that of Mth. and Mg. is complex. Encyclopaedia Britannica, 11th Edition, Volume 3, Slice 7 "Bible" to "Bisectrix" 2010-12-20T17:12:05.780Z Hence in hard water soap will not cleanse till all the Ca and Mg compounds have combined. An Introduction to Chemical Science |
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