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To understand the genetic gains of grain yield in the Southern China Winter Wheat Region (SCWWR), two yield potential trials, i.e., YPT 1 including 11 leading cultivars from the Middle and Low Yangtze Valley (Zone III) and YPT 2 including 15 leading cultivars from the Southwestern China Region (Zone IV) from 1949 to 2000, were conduced during the 2001–2003(More)
Photoperiod response is of great importance for optimal adaptation of bread wheat cultivars to specific environments, and variation is commonly associated with allelic differences at the Ppd-D1 locus on chromosome 2D. A total of 926 Chinese wheat landraces and improved cultivars collected from nine wheat growing zones were tested for their genotypes at the(More)
Aerobic photoproduction of H2 was demonstrated in Anabaena spp. strains CA and 1F when cells were growing under nitrogen-fixing conditions. The rates of production, measured either by the hydrogen electrode or in a flow system by gas chromatography, were 10 to 15% of the rate of photosynthetic O2 evolution or 50 to 80% of the rates of acetylene reduction.(More)
Electromagnetic radiation by dipole antenna loaded with general bi-isotropic objects is investigated using time-domain integral equations. By introducing pairs of equivalent electric and magnetic sources, electromagnetic fields inside a homogeneous bi-isotropic region can be represented by these sources over its boundary. A series of coupled surface(More)
Using MS/MS, we have identified ions at m/z 399, 421, 609.4, and 819.9 as those of tris (2-butoxyethyl) phosphate, originating in the gray rubber stoppers commonly used as closures in commercial sources of peptides and proteins. The compound is readily extracted by contact with organic solvents such as alcohol or acetic acid and even by water alone. Zinc(More)
The hexakis (4-diemthylaminopyridyl) benzene hexacation of 1 is investigated as an extreme example of the ability of electrospray ionization to allow transfer of small multivalent ions to the gas phase. The hexacationized benzene ring ions are stabilized by forming gas phase complexes with two to five trifluoromethanesulfonate counterions. MS/MS analysis(More)
Metabolically active heterocysts isolated from wild-type Anabaena sp. strain CA showed high rates of light-dependent acetylene reduction and hydrogen evolution. These rates were similar to those previously reported in heterocysts isolated from the mutant Anabaena sp. strain CA-V possessing fragile vegetative cell walls. Hydrogen production was observed with(More)
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