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61. The first primitive forms of life consumed various materials, including hydrogen sulfide, and released oxygen.

62. The mean breath hydrogen curves after acarbose, miglitol, and placebo are shown in Figure 1.

63. The smell is distinctive, too: chemicals and rotten eggs, the hydrogen sulphides produced by processing coal.

64. Deformation modes involving hydrogen also drop dramatically in frequency on isotopic substitution.

65. The very same process, operating on water instead of carbon dioxide, makes oxygen and hydrogen gas.

66. Life generates methane, ammonia, oxygen, hydrogen, carbon dioxide, and many other gases.

67. More water has been destroyed by ultraviolet sunlight, torn apart into oxygen and hydrogen.

67. Sentencedict.com is a sentence dictionary, on which you can find excellent sentences for a large number of words.

68. After ingestion of sucrose, breath hydrogen was measured at 20 minute intervals for 160 minutes.

69. The end product contains mainly carbon monoxide and hydrogen from the gasification step plus a little methane from the carbonisation.

70. If during this period breath hydrogen increased by 100% or more the test was considered abnormal.

71. Might it not be the equivalent of a small hydrogen bomb?

72. Glu115 also forms hydrogen bonds to His118 and to Asp84, and Glu238 hydrogen-bonds to Glu204.

73. The heat released in this reaction, which is like a controlled hydrogen bomb explosion, is what makes the star shine.

74. The main source of helium-3 is in fact hydrogen bomb recycling!

75. This method is used for the reactions of metals and acids and the decomposition of hydrogen peroxide.

76. We then start to accumulate liquid hydrogen in an empty fuel tank.

77. Yet the real energy gain in fuels does not come from burning the carbon component of hydrocarbons, but the hydrogen portion.

78. After further processing, hydrogen is delivered to a stack of fuel cells energizing electric motors that drive the rear wheels.

79. The large scale release of fusion energy has so far occurred only in stars and in the hydrogen bomb.

80. So the sewage goes septic, giving off hydrogen sulphide which corrodes the pipes and makes a nasty smell.

81. This is about the energy that would be released if a hydrogen atom could be totally converted into energy.

82. Scientists assume that those planets' high-pressure cores contain metal hydrogen.

83. The largest accessible source of helium-3 on Earth is from the decay of tritium in hydrogen bombs.

84. The same device, run backwards, reacts hydrogen and oxygen together to make water and generate electrical power.

85. Distortions due to the formation of hydrogen bonds are usually smaller than those due to co-ordination to metal ions.

86. Acid output was calculated by multiplying the hydrogen ion concentration by the volume of the gastric aspirate.

87. Sulphur bacteria may be present below the anoxic zone, reducing sulphate ions and liberating hydrogen sulphide.

88. Eventually, however, the star will run out of its hydrogen and other nuclear fuels.

89. The hydrogen could accumulate during a launch and spark a serious explosion.

90. If hydrogen sulfide or some other poisonous gas is detected, Donahue dons an airtight breathing device and a hard hat.