in order to study the effects of co2 enrichment on growth and competitiveness of soybean (glycine max) and millet (panicum miliaceum) against redroot pigweed (amaranthus retroflexus) and lambsquarter (chenopodium albam) an experiment was conducted using two co2 concentrations (350 and 700 ppm). for evaluating effects of co2 variation on inter-and intra-specific competition plants were grown in ...

We describe the reduction from four to two dimensions of the SU(2) Donaldson-Witten theory and the dual twisted Seiberg-Witten theory, i.e. the Abelian topological field theory corresponding to the Seiberg–Witten monopole equations. NBI-HE-96-14 hep-th/9603023 ∗E-mail: [email protected]

The 150 Sm nucleus has been studied to high spins in a measurement of γ radiation following the 136 Xe(18 O,4n) 150 Sm, compound-nucleus reaction at beam energy of 76 MeV. The measurement was performed at NBI Risø using the NORDBALL array. Alternating parity, s=+1 band in 150 Sm has been observed up to spin I=22. This band is crossed by two aligned bands, corresponding to a reflection-symmetric...

We discuss the general structure of the non–abelian Born–Infeld action, together with all of the α derivative corrections, in flat D–dimensional space– time. More specifically, we show how the connection between open strings propagating in background magnetic fields and gauge theories on non–commutative spaces can be used to constrain the form of the effective action for the massless modes of o...

A review of the applications of noncommutative geometry to a systematic formulation of duality symmetries in string theory is presented. The spectral triples associated with a lattice vertex operator algebra and the corresponding Dirac-Ramond operators are constructed and shown to naturally incorporate target space and discrete worldsheet dualities as isometries of the noncommutative space. The...