ライフサイエンスコーパス: carbon

1 ght species may represent recalcitrant brown carbon.

2 he biosphere and is a major sink for organic carbon.

3 tions with nucleophiles at the adjacent meta carbon.

4 the weathering of isotopically light organic carbon.

5 cated from lithographically patterned glassy carbon.

6 nd formation between two sterically hindered carbons.

7 mbic interactions of RO and burying aromatic carbons.

8 to chronic (1 mo or more) residential black carbon +5.33 x 10(5) particles/ml higher carbon load (95

9 CO2 with trace elements to define an average carbon abundance for the upper mantle.

10 morphological development is conservative to carbon acquisition.

11 In addition, no binders, carbon additives or current collectors are added to the

12 costs of N acquisition with increasing soil carbon, adequately reproduced global GPP distributions.

13 old and other metal nanoparticles along with carbon allotropes are also covered.

14 nity for PFOA compared to powdered activated carbon, along with comparable capacity and kinetics.

15 ated into two stages, synthesis of the seven carbon alpha, omega-dicarboxylic acid pimelate moiety an

16 ficient method for the oxidation of benzylic carbons (amines and cyanides) into corresponding benzami

17 alyses suggest that methanol is the dominant carbon and energy source the methanotroph provides to su

18 account for the largest terrestrial pool of carbon and have the potential for even greater quantitie

19 undamentally important for oceanic uptake of carbon and heat, nutrient resupply for sustaining oceani

20 ults extend the understanding of how organic carbon and nitrite loads modulate N2O accumulation in de

21 nificant reductions in water-soluble organic carbon and nitrogen (p < 0.01) in household air samples.

22 e to a more complete understanding of global carbon and nitrogen cycling and a reduction in the uncer

23 Fire-driven carbon and nitrogen losses were substantial in savanna g

24 onditions, as well as the effect of external carbon and nitrogen sources, was thereafter verified.

25 y thus minimizing negative feedbacks between carbon and nutrient balance.

26 d aliphatic (linear or branched at the alpha-carbon) and aromatic ester groups have been synthesized,

27 har), engineered carbons (biochar, activated carbon), and related materials like graphene and nanotub

28 ich is present as pyrite, degradable organic carbon, and geogenic U(IV) minerals.

29 te matter), PM10, ultrafine particles, black carbon, and the elemental composition of PM2.5.

30 nce of expansion and biosynthesis on energy, carbon, and water.

31 cale, and have constructive implications for carbon assessment, modelling, and management.

32 catecholamide units was increased from four carbon atoms (4-LICAM(4-)) to five, six and eight (5-, 6

33 Single bonds between carbon atoms are inherently challenging to activate usin

34 dispersed and surrounded by sp(3)-hybridized carbon atoms.

35 of enhanced nitrification and higher organic carbon availability.

36 ra alters key ecosystem properties including carbon balance and hydrology.

37 of positive feedbacks of the northern forest carbon balance to climate change caused by changes in fo

38 ch far surpasses the best values of reported carbon-based composite materials.

39 lymerized ionic liquids, we demonstrate that carbon-based porous nanoarchitectures can be well stabil

40 s counter and reference electrodes and eight carbon-based working electrodes, which were modified wit

41 An overview of the defects in carbon-based, metal-free electrocatalysts for ORR and va

42 ne allows for developing rechargeable iodine-carbon batteries free from the unsafe lithium/sodium met

43 is approximately 30-70% of that due to black carbon (BC).

44 ly on quantifying the top 1 m of belowground carbon (BGC).

45 (fossil fuel soot, biomass char), engineered carbons (biochar, activated carbon), and related materia

46 dels estimate that light absorption by brown carbon (BrC) in several regions of the world is approxim

47 rbing organic carbon (OC), also termed brown carbon (BrC), from laboratory-based biomass burning (BB)

48 t absorption properties of atmospheric brown carbon (BrC).

49 Our results can improve estimates of the carbon budget in China's forests and for better understa

50 l for the development of regional and global carbon budgets.

51 rd becomes insensitive to changes in organic carbon burial rate, due to counterbalancing changes in t

52 ution.Reliable estimates of the total forest carbon (C) pool are lacking due to insufficient informat

53 Coastal wetlands are sites of rapid carbon (C) sequestration and contain large soil C stocks

54 important conduits of terrestrially derived carbon (C) to atmospheric and marine reservoirs.

55 afrost thaw exposes immense stores of frozen carbon (C) to microbial decomposition.

56 rtant for quantifying their impact on forest carbon (C) uptake.

57 The most carbon (C)-dense ecosystems of Amazonia are areas charac

58 ations of an emission line of singly ionized carbon ([C ii] at a wavelength of 158 micrometres) in fo

59 th the potential for biogas purification and carbon capture demonstrated for relevant gas mixtures.

60 SILMs have been proposed for advanced carbon capture materials.

61 rm storage and implications of a leak from a carbon capture storage (CCS) site.

62 oli system to be employed as an exciting new carbon capture technology or as a cell factory dedicated

63 multiple regioselective and stereoselective carbon-carbon bonds.

64 anges needed for the formation of the unique carbon-carbon cross-link in the streptide family of natu

65 +) acts as a soft Lewis acid to polarize the carbon-carbon triple bond, and solid K3PO4 interacts wit

66 espondingly unique transformations involving carbon-carbon, carbon-hydrogen, and carbon-metal bond ac

67 matic investigation, a novel graphene/cotton-carbon cathode is presented here that enables sulfur loa

68 n the formation of two C-C bonds at a single carbon center bearing a C(sp(3)) organoboron functional

69 ich enables the introduction of a quaternary carbon center.

70 hat contain a copper-substituted stereogenic carbon centre.

71 17 SCCP chain-length standards with a single carbon chain length and variable chlorination level.

72 ccumulation in A. baylyi is dependent on the carbon chain length.

73 The use of magnesium carbenoids allows carbon chains to be grown with the incorporation of sens

74 ycling and a reduction in the uncertainty of carbon-climate feedbacks in the Earth system.

75 eling and forecasting nutrient controls over carbon-climate feedbacks.

76 le in situ noncovalent immobilization onto a carbon cloth electrode.

77 pression regulated by the external inorganic carbon concentration at both the transcript and protein

78 will allow efficient microbial conversion of carbon-containing bioconvertible substrates to electrici

79 ation of spiroepoxides or related quaternary carbon-containing oxiranes can be troublesome and diffic

80 gestion efficiency was evaluated by residual carbon content.

81 The high burial rate of organic carbon correlates with a significant drawdown of atmosph

82 d promoting hydraulic failure, (2) increases carbon costs during periods of carbon starvation, and (3

83 etermination of experimental one-bond proton-carbon coupling constants ((1)JCH) in small molecules is

84 Lignocellulose degradation is central to the carbon cycle and renewable biotechnologies.

85 eric O2 Future work on glaciation-weathering-carbon cycle feedbacks should consider weathering of tra

86 variability and greening trend of the global carbon cycle given their mean lower productivity when co

87 While the exact magnitude of the resulting carbon cycle impacts remains to be confirmed, the radioc

88 of the responses of oceanic and terrestrial carbon cycle remain poorly constrained in space and time

89 he surface ocean is a key step in the global carbon cycle, with almost half of marine primary product

90 troph has a considerable impact on the wider carbon cycle.

91 with associated effects on biodiversity and carbon-cycle feedbacks to climate change.

92 tential implications for natural halogen and carbon cycles.

93 ss indicators to elucidate the complexity of carbon cycling in these ecosystems.

94 al respiration are a key component of global carbon cycling, resulting in the transfer of 40-70 Pg ca

95 Alcohols with chain lengths of 10-14 carbons decrease Tmix in ternary GUVs of dioleoyl-PC/dip

96 was drying intensity-specific, and available carbon-dependent.

97 We report that the environmental stress of carbon dioxide (CO2) anesthesia converts an asymptomatic

98 s with a significant drawdown of atmospheric carbon dioxide (CO2) at that time.

99 Trapping with carbon dioxide (CO2) gave the respective O-[Zr] bonded c

100 fication of seawater caused by anthropogenic carbon dioxide (CO2) is anticipated to influence the gro

101 ave the capacity to release large amounts of carbon dioxide (CO2) to the atmosphere in response to in

102 Carbon dioxide (CO2) which constitutes a major part of t

103 were biorefined by consecutive supercritical carbon dioxide (SFE-CO2) pressurised liquid (PLE) and en

104 t, present and future changes in atmospheric carbon dioxide concentration ([CO2 ]) is critical for un

105 ally climate change and elevated atmospheric carbon dioxide concentrations-are increasing demand for

106 ase pattern of soil organic matter decay and carbon dioxide fluxes to the atmosphere, with phases of

107 report our investigations of electrochemical carbon dioxide reduction over CuAg bimetallic electrodes

108 Carbon dioxide sorption isotherms were studied to 30 bar

109 A solid phase in the mixed water-carbon dioxide system, previously identified as carbonic

110 n leaf surfaces through which water loss and carbon dioxide uptake occur, are closed in response to d

111 esis system producing primarily acetate from carbon dioxide, and their transcriptional activity was m

112 t energy conversion is mainly used to reduce carbon dioxide.

113 ented here has the goal of examining whether carbon disulfide (CS2) may play a role as an endogenousl

114 the aerobic degradation of dissolved organic carbon (DOC) adsorbed to granular activated carbon in a

115 sting that the leaching of dissolved organic carbon (DOC) from litter layer to the topsoil is the maj

116 organic carbon (HFOC), and dissolved organic carbon (DOC) were fractionated in sediment samples from

117 A novel functionalized carbon dot has been synthesized by covalently linking be

118 -cyclodextrin to the surface of N, S codoped carbon dots (beta-CD-CDs).

119 emissions than PFIs due to higher elemental carbon (EC) emissions.

120 SGE) and a gold nanoparticle-modified glassy carbon electrode (AuNPs-GCE) was demonstrated.

121 erse nickel nanoparticles modified on glassy carbon electrode (Ni@f-MWCNT/GCE) were synthesized throu

122 aphene-gold nanoparticles composite modified carbon electrode with the viral capsid-specific aptamer.

123 within certain biomes soil moisture and soil carbon emerge as dominant predictors of Rs.

124 tion (R(2) 0.85) between the p-PAH and black carbon emissions was identified with a mass ratio of app

125 climate forcing associated with higher black carbon emissions.

126 eukaryotic plankton community structure and carbon export potential at the Western Antarctica Penins

127 range increment in annual residential black carbon exposure.

128 ion mass spectrometry (CFI-MS), which uses a carbon fiber bundle as the ion source, is useful for the

129 Carbon fiber ionization mass spectrometry (CFI-MS), whic

130 electrode array and dopamine dynamics from a carbon-fiber microelectrode.

131 ved from polymers, gel spun fibers, modified carbon fibers, carbon-nanotube fibers, ceramic fibers, a

132 Indirect estimates of carbon fixation by Crocosphaera were equivalent to 11% o

133 The rates of gross O2 production and carbon fixation in the SCM were found to be similar to t

134 Here we show that the calcification to carbon fixation ratio determines whether coccolith calci

135 The strain has multiple carbon fixation routes (Wood-Ljungdahl pathway, pyruvate

136 ments contain abundant genes for autotrophic carbon fixation used in the Calvin-Benson-Bassham (CBB)

137 ved in SCN(-) degradation, sulfur oxidation, carbon fixation, and nitrogen removal.

138 algal CCM, a key process that drives global carbon fixation.

139 Ab initio calculations suggest that carbon-fluorine bond formation proceeds via a concerted

140 ratio of photorespiratory to photosynthetic carbon flux and in turn adjusts stomatal conductance, ph

141 tructures carbohydrate metabolism by driving carbon flux through the glyoxylate shunt and gluconeogen

142 the shikimate pathway, and a redirection of carbon flux toward the shikimate-derived aromatic amino

143 rlooked difference between how net and gross carbon fluxes affect the long-term carbon isotope mass b

144 did not significantly contribute to changing carbon fluxes during the studied period.

145 Earth System Models used to forecast future carbon fluxes in recent climate assessments.

146 The results indicate that energy use and carbon footprint per cubic meter of wastewater treated,

147 us matter (PCM) includes environmental black carbon (fossil fuel soot, biomass char), engineered carb

148 e values of cave-adapted shrimp suggest that carbon from methanotrophic bacteria comprises 21% of the

149 cling, resulting in the transfer of 40-70 Pg carbon from soil to the atmosphere each year.

150 m Mastigocoleus testarum derives most of its carbon from the mineral it excavates, growing preferenti

151 Plants with photosynthetic stems have extra carbon gain that can help cope with the detrimental effe

152 A novel 3D Co-Nx |P-complex-doped carbon grown on flexible exfoliated graphene foil is des

153 In common with the other 'blue carbon' habitats (mangroves and tidal marshes) seagrasse

154 rganic carbon (LFOC), heavy fraction organic carbon (HFOC), and dissolved organic carbon (DOC) were f

155 The directed activation of carbon-hydrogen bonds (C-H) is important in the developm

156 que transformations involving carbon-carbon, carbon-hydrogen, and carbon-metal bond activation.

157 This study seeks to estimate the carbon implications of recent changes in China's economi

158 carbon (DOC) adsorbed to granular activated carbon in a drinking water production plant, which canno

159 We were able to detect urinary black carbon in all children, with an overall average (SD) of

160 Organic carbon in atmospheric particles comprises a large fracti

161 early indicates that light-absorbing organic carbon in winter Beijing, the capital of China, is mainl

162 yl-PC/dipalmitoyl-PC/cholesterol, whereas 16 carbons increase Tmix again.

163 e biogenic NER from incorporation of labeled carbon into microbial biomass are treated as degradation

164 in supporting the transfer of chemosynthetic carbon into the food web, particularly to higher trophic

165 at Pkm2 deletion reduced the flow of glucose carbons into lactate and glutamate without markedly incr

166 wherein free rotation of the radical-bearing carbon is prevented and the radical SAM machinery sits a

167 Soil organic carbon is projected to increase in Australia (9%), the M

168 the proton migration, while the movement of carbon is very limited.

169 Within these limits, the carbonate carbon isotope (delta(13)C) record becomes insensitive t

170 The carbon isotope composition of calcite formed during this

171 and continued until the end of the Lomagundi carbon isotope excursion ca. 2,060 Ma.

172 and gross carbon fluxes affect the long-term carbon isotope mass balance, and may lead to reassessmen

173 Emissions from trees had an average stable carbon isotope value (delta(13)C) of -66.2 +/- 6.4 per m

174 Fatty acid and bulk stable carbon isotope values of cave-adapted shrimp suggest tha

175 Light fraction organic carbon (LFOC), heavy fraction organic carbon (HFOC), and

176 us opens up a new approach to prepare porous carbon liquids.

177 ack carbon +5.33 x 10(5) particles/ml higher carbon load (95% confidence interval, 1.56 x 10(5) to 9.

178 The urinary black carbon load was positively associated with medium-term t

179 atmosphere, with phases of substantial soil carbon loss alternating with phases of no detectable los

180 Ecosystem carbon losses from soil microbial respiration are a key

181 Similar to sea spray aerosol, organic carbon markers were most frequently observed in individu

182 design and synthesis of a highly porous pure carbon material with multifractal structures.

183 Studies of carbon materials in 3D printing, especially GO-based mat

184 The exceptional material properties of carbon materials permit Terahertz operation and two orde

185 owledge, the highest density among amorphous carbon materials, and shows incompressibility comparable

186 Here we engineer the carbon metabolism of Synechococcus elongatus PCC 7942 to

187 Downstream sites also had stronger carbon metabolism than upstream sites.

188 s colonization-related roles in motility and carbon metabolism, as well as 44 other genes that had no

189 nvolving carbon-carbon, carbon-hydrogen, and carbon-metal bond activation.

190 But how carbon migrates in the deep Earth is not well understood

191 Carbon monoxide (CO) reduced GSH/GSSG in three breast ca

192 Carbon monoxide is an important one-carbon source and ca

193 solar-induced chlorophyll fluorescence, and carbon monoxide observations from multiple satellites.

194 t a chemophotonically driven, sense-of-logic carbon monoxide-releasing molecule (SL-photoCORM).

195 Carbon monoxide-releasing molecules (CORMs) suppress inf

196 tion of amino acid or peptide derivatives on carbon nanomaterials such as [60]fullerene.

197 the synthesis of novel highly porous N-doped carbon nanoplatelets (N-HPCNPs) derived from oatmeal (or

198 leads to the unexpected formation of porous carbon nanoribbons.

199 The coupling of hollow carbon nanospheres with triblock copolymers is a promisi

200 ddressed herein, functionalized multi-walled carbon nanotube (MWCNT) supported highly monodisperse ni

201 , not possible in Nafion composites based on carbon nanotube and graphene.

202 progress in demonstrating the scalability of carbon nanotube field-effect transistors down to the siz

203 Composed of a semiconducting single-walled carbon nanotube nested in a charged, impermeable covalen

204 rs, gel spun fibers, modified carbon fibers, carbon-nanotube fibers, ceramic fibers, and synthetic vi

205 ules on the thermal properties of individual carbon nanotubes (CNTs) has been an important open quest

206 Carbon nanotubes (CNTs) were used as a conductive skelet

207 Single-walled carbon nanotubes (SWCNTs) have been incorporated in many

208 Single-walled carbon nanotubes (SWNTs) offer unique electrical and opt

209 raction with the use of oxidized multiwalled carbon nanotubes and batophenanthroline was developed fo

210 brication and characterization, specifically carbon nanotubes and nanowires, have had major contribut

211 Biomimetic architectures with Bouligand-type carbon nanotubes are fabricated by an electrically assis

212 hods, we show that the resulting DNA-wrapped carbon nanotubes can be further sorted to produce nanotu

213 Covalently connected carbon nanotubes create magnetic fields through graphene

214 However, to date, circuits built with carbon nanotubes have overlooked key aspects of a practi

215 c molecular interactions with the surface of carbon nanotubes that remain the subject of fundamental

216 rnet/Li (LGL) cells and asymmetric Li/garnet/carbon-nanotubes (LGC), are fabricated to emulate the be

217 oiting the electrostatic interaction between carbon networks and polymerized ionic liquids, we demons

218 The obtained graphitic carbon networks show excellent electrochemical performan

219 e report the novel synthesis of 3D graphitic carbon networks through the pyrolysis of nanosized ZIF-6

220 rived, porous nitrogen-enriched carbonaceous carbon nitride catalyst (PCNx) has been synthesized from

221 nojunction architecture, composed of B-doped carbon nitride nanolayer and bulk carbon nitride, was fa

222 of B-doped carbon nitride nanolayer and bulk carbon nitride, was fabricated by a one-step approach.

223 Exfoliated carbon nitride, which liberates only trace hydrogen leve

224 heptazine-based polymers known as graphitic carbon nitrides (g-C3N4) have emerged as promising photo

225 Here, we measured carbon, nitrogen, phosphorus, and biomass allocation amo

226 In this process, carbon-nitrogen bond formation proceeds through a key am

227 ts suggest that, in the presence of glucose, carbon/nitrogen cross-talk is likely involved in the res

228 (3) promote biotic attack due to low tissue carbon: nitrogen (C : N).

229 Light-absorbing organic carbon (OC), also termed brown carbon (BrC), from labora

230 which contribute the largest part to organic carbon (OC, 67 +/- 3%) and its sub-constituents (water-s

231 reaction of diffused Cr atoms and amorphous carbon of MWCNTs would assist in improving the electrica

232 We assess an improved trait-driven carbon optimality model with in situLL data for 105 spec

233 The controllable reactivity gives the carbon organic radical great potential as a versatile re

234 opic dumbbell-shaped bi-component mesoporous carbon-organosilica Janus particles with asymmetric wett

235 To address the challenges of low carbon oxidation activity and low carbon utilization, a

236 imarily attributed to differences in aerosol carbon oxidation state [Formula: see text].

237 othesis regarding the mechanisms that link 1-carbon pathway genetics and the condition that we sugges

238 stal marine ecosystems, fix up to 27.4 Tg of carbon per year, and provide important structural compon

239 microsites are important regulators of soil carbon persistence, shifting microbial metabolism to les

240 o elevated CO2 are correlated with inorganic carbon physiology.

241 be more selective for the formation of multi-carbon products than pure copper.

242 increase in the efficiency of the biological carbon pump that could have accounted for as much as hal

243 atalysts, such as Ti-Si molecular sieves and carbon quantum dots (CQDs), are also briefly appraised i

244 ical forests are likely to be net sources of carbon rather than sinks.

245 here the formal oxidation state (FOS) on the carbon remains unchanged at -IV relative to that in meth

246 at bovine Rh, regenerated instead with a six-carbon-ring retinal chromophore featuring a C(11)=C(12)

247 henium-catalyzed sequence for the formal two-carbon scission of allyl groups to carboxylic acids has

248 environmental impacts of As mobilization at carbon sequestration sites.

249 the potential for even greater quantities of carbon sequestration.

250 from plant pathology and forest ecology, to carbon sequestration.

251 etermines rates of biomass turnover and soil carbon sequestration.

252 y were studied at constant growth rate using carbon (serine)-limited continuous chemostat cultures.

253 he nanoparticles comprising of iron core and carbon shell were decorated with ferrocene derivatives:

254 n increase in rate constants with increasing carbon side-chain length.

255 ilar, and sometimes more dramatic changes to carbon sinks.

256 Photosynthetically derived sugar provides carbon skeletons for lipid biosynthesis.

257 Restoration of soil organic carbon (SOC) in agricultural soils can not only improve

258 Carbon monoxide is an important one-carbon source and can be incorporated in complex molecul

259 The utilization of CO2 as a carbon source for organic synthesis meets the urgent dem

260 ave the genetic potential to use chitin as a carbon source in the absence of glucose, importing it vi

261 uency, and inclusion of a saturated zone and carbon source were studied.

262 roviding acetylene as the electron donor and carbon source while TCE or cis-DCE served as the electro

263 ortional to the extent of deuteration in the carbon source, and as little as 5% deuteration can be di

264 hich allows them to use malonate as the sole carbon source.

265 n a defined medium with malonate as the sole carbon source.Some aerobic bacteria contain a biotin-ind

266 indicate metabolic activity using deuterated carbon sources but also reveal different metabolic pathw

267 n using the molecular precursor of metal and carbon sources is presented for the first time.

268 Dicarboxylates and sucrose are the main carbon sources within the nodules; in ineffective (nifH)

269 mplex, required for growth on nonfermentable carbon sources, in a Hap1p- and Hap2/3/4/5p-dependent ma

270 Typhimurium to utilize a variety of carbon sources, including microbiota-derived succinate.

271 tions and that during growth in nonpreferred carbon sources, Msn2 is constantly localized to the nucl

272 talytic efficiency compared to the Pt loaded carbon sphere catalyst in aqueous hydrogenation reaction

273 (2) increases carbon costs during periods of carbon starvation, and (3) promote biotic attack due to

274 ral habitats for biodiversity protection and carbon storage alongside promoting areas of high-yield c

275 and (3) What is the Holocene carbon storage budget for Lake Baikal.

276 Aboveground tree grass biomass and carbon storage in all systems was estimated with allomet

277 udy summarizes the factors affecting organic carbon storage in regional and national scale, and have

278 ts of land sparing for both biodiversity and carbon storage suggest that safeguarding natural habitat

279 global-scale implications for water balance, carbon storage, and related rhizosphere functions.

280 lead to long-term declines in the amount of carbon stored in agricultural soils.

281 ed the most effective minimal combination of carbon substrate and inoculum to drive pH neutralization

282 wastewater treated, varies markedly with the carbon substrate.

283 tles, and chemical mechanisms for generating carbon-sulfur bonds.

284 rved, suggesting that plant sanctions affect carbon supply to nodules.

285 erated amorphous carbon that serve as a dual carbon support and protectant system with which to preve

286 nication, we present a new type of catalysts-carbon-supported IrPdRu nanoparticles-as H2 oxidation ca

287 We combine this selective cathode with a carbon-supported palladium (Pd/C) anode to establish a m

288 large concentrations of bioavailable organic carbon that fueled anaerobic microbial respiration and s

289 e rGO sheets and in situ generated amorphous carbon that serve as a dual carbon support and protectan

290 te to the overall electron flux of pyrogenic carbon to a lesser extent with greater pyrolysis tempera

291 ood mobility in MC, oxygen can rotate around carbon to facilitate the proton migration, while the mov

292 nt via the C-H bond cleavage of the benzylic carbon under mild reaction conditions.

293 s response and nutrient cycling genes to fix carbon under the fluctuating conditions that the sandsto

294 The carbon use efficiency of plants (CUEa ) and microorganis

295 ges of low carbon oxidation activity and low carbon utilization, a highly efficient, 3D solid-state a

296 the deviation is determined by the degree of carbon utilization.

297 It was found that carbon was present in a non-graphitic sp(2)-bonded confi

298 rs in NO2-CLA located on the beta- and delta-carbons with respect to the nitro group.

299 cting hydrogen from one of three bis-allylic carbons within 1,4-cis,cis-diene units.

300 efficiently sequester significant amounts of carbon without being gravitationally unstable.