ion provides the dominant channel of reaction (6): C0 2 • C02+ + CH4 CH4+ 42 C0 2 , (6a) CH4+ + C02 -> (C0 2 -CH 4 +)* , (21) (C02 • CH4+)* -> CO2H+ + CH3 , (22) (C02 • CH4+)* + C02 -> C02 • CH4+ + C 0 2 , (23) C02H+ + 2 C02 -> (C02)2H+ + C0 2 . (24) In this mechanism the formation of CO2 • CH4 + occurs by collisional stabilization of the intermediate reaction complex (C02 • CH4)* rather than v...

The light-dependent Cl e uptake in Elodea densa exhibits dual DCMU inhibition curves dependent on the presence and absence of C02 . This suggests that cyclic photophosphorylation (energy surce in the absence of C02) is also inhibited by higher concentrations of DCMU in vivo. Further, at low DCMU concentrations the Cl0 uptake in the presence of C02 is much smaller than would be expected if cycli...

Community forests provide real benefits, especially the economic value of communities around forest, and a contribution to environmental services. One benefits is vital for survival living things because it has role in regulating micro macro climate. On other hand, forest destruction can cause climate instability. Sustainable management community become necessity due global political changes. F...

The discussion of carbon dioxide in its relation to biology, to the exclusion of other components of the system is a difficult, if not altogether impossible, task. We may, however, consider in a more or less general manner, certain processes in which C02 appears to be an important factor, and some of the phases of its action which have attracted particular attention. Many applications of C02 in...

Tropospheric sulfate aerosols produced by atmospheric oxidation of S02 emitted from fossil fuel combustion scatter solar radiation and enhance the reflectivity of clouds. Both effects decrease the absorption of solar radiation by the earth-atmosphere system. This cooling influence tends to offset the warming influence resulting from increased absorption of terrestrial infrared radiation by incr...

We examined the effects of elevated C02 on growth and carbon/nutrient balance in a natural population of the deciduous temperate zone shrub Lindera benzoin. Our data concern whole plant, leaf, and stem growth for the first two seasons of a long-term field experiment in which C02 levels were manipulated in situ. In addition to growth parameters, we evaluated changes in leaf and stem chemistry, i...

We measured sol1 surface C02 cfflux (F,) 111 loblolly ptnc stands ( P m u ~ t~red~i L ) located on the Vtrglnia Plcdmont (VA) and South Carollna Coastal Platn (SC) In cfforts to assess the lnlpact cl~matc, productlv~ty, and cultural practlccs have on F, in the managed loblolly plnc ecosystem The cffect of qtand dge on F, was cxamlncd using a rcplicaled chronoscqucncc approach In whlch stands ra...

In vivo and in vitro experiments have demonstrated that the myelographic agent metrizamide decreases neural tissue glucose metabolism whereas iohexol and iopamidol do not. This study compares the changes in slices of rat hippocampus C02 production caused by the nonionic dimers iotrol and iodixanol with the effects of metrizamide and 2-deoxy-o-glucose. After 6-hr incubations, 70-mmolfl concentra...

The pathway of the methane fermentation of formate was investigated in several organisms by Stephenson and Stickland (1933), Barker (1941) and Stadtman and Barker (1951). Since in several instances H2 and C02 were generated during fermentation, the decomposition of formate would probably involve some prior oxidation to C02 and subsequent reduction to CH4 by the C02-reduction scheme of Van Niel ...