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121. Of those figures, Britain contributed 1.84 million tonnes of sulphur and an equal amount of nitrogen dioxide.

122. Nitrogen fixed in the form of biologically useful compounds is a limiting factor for photosynthesis.

123. Around half of the nitrogen in the burnt biomass may be released as nitrogen gas.

124. The very low abundances of volatiles and especially the low nitrogen abundance all pose special problems.

125. Bacteria then work on the nitrates converting them firstly to nitrous oxide and then to free nitrogen gas.

126. The company kicked off with a hefty dose of early nitrogen, which with hindsight was the right choice.

127. Lodging was less, despite more nitrogen fertiliser and a cheaper growth promoter programme.

128. Traffic now accounts for 51 percent of total nitrogen oxide emissions, compared to 31 percent in 1980.

129. The presence of nitrogen in all protein compounds distinguishes proteins from carbohydrates and lipids.

130. Limits may be set also by deficiencies of nitrogen and other key minerals in the soils.

131. Secondly, waste can be used as fertiliser-the residue from such processing has a high nitrogen content.

132. The nitrogen oxides are almost as effective as dust at screening out sunlight.

133. Potash shortage is often an induced condition caused by too much nitrogen reducing the potash content to an unbalanced proportion.

134. Nitrogen dioxide levels in central London rose by 40 percent between 1979 and 1989.

135. The products of coal gasification include carbon monoxide, carbon dioxide, hydrogen, methane and nitrogen.

136. Catalysts are expected to cut nitrogen oxide emissions from cars to about 10 percent by 1989 levels by the year 2006.

137. The major Billingham-based production includes ammonia, nitric acid, urea and both straight nitrogen and compound fertilizers.

138. The coir is blended with a mix of nitrogen, phosphate and potassium fertilizers to form the new compost.

139. After a short time the oxygen and the nitrogen molecules will start to mix.

140. As the pressure increases, so does the amount of nitrogen forced into the bloodstream of a SCUBA diver.

141. At both operations, biopsies from the tumour and non-tumour liver tissue were collected and snap frozen in liquid nitrogen.

142. By spreading nitrates it is possible to obtain good yields of wheat or barley, which take nitrogen from the soil.

143. Armstrong also expressed his worry over the inconsistency between benzene-diazo-chloride and benzene-azo-benzene, both with two nitrogen atoms.

144. Elemental nitrogen is a very unreactive and inert material.

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145. Three types of N? chloroacetyl substituted nitrogen? containing benzoheterocycles were introduced into pyrimidine by the formation of thioether.

146. Many surgical complications and disease processes inhibit normal nitrogen anabolism.

147. Urea is commonly used as the source of nitrogen in foliage sprays.

148. The experiment on anisole dehumidification was carried out. And the results showed that the way of drying anisole by dry nitrogen is proved feasible.

149. AlN crystals were grown by modified sandwich sublimation method in nitrogen atmosphere.

150. The amide nitrogen of glutamine or asparagine functions more effectively than ammonia.