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For more than thirty years, the parallel programming community has used the <i>dependence graph</i> as the main abstraction for reasoning about and exploiting parallelism in "regular" algorithms that use dense arrays, such as finite-differences and FFTs. In this paper, we argue that the dependence graph is not a suitable abstraction for algorithms in new(More)
Fifty-five Chinese isolates from nodules of Amorpha fruticosa were characterized and compared with the type strains of the species and genera of bacteria which form nitrogen-fixing symbioses with leguminous host plants. A polyphasic approach, which included RFLP of PCR-amplified 16S rRNA genes, multilocus enzyme electrophoresis (MLEE), DNA-DNA(More)
Human pluripotent stem cells represent a potentially unlimited source of functional pancreatic endocrine lineage cells. Here we report a highly efficient approach to induce human embryonic stem (ES) cells and induced pluripotent stem (iPS) cells to differentiate into mature insulin-producing cells in a chemical-defined culture system. The differentiated(More)
The nitrogen-fixing rhizobial symbionts of Sesbania herbacea growing in the nature reserve at the Sierra de Huautla, Mexico, were isolated and characterized. All 104 isolates together with the type strain for Rhizobium galegae, HAMBI 540T, had similar 16S rRNA genes as revealed by PCR-RFLP analysis. Similarity in the sequences of the 16S rRNA genes placed(More)
Freesia hybrida is an important worldwide cut flower, especially in America and Europe. For efficient regeneration of this flower from young inflorescence and rachillae in tetraploid, we developed a simple in vitro micropropagation protocol. Explants of Freesia hybrida can regenerate plantlets through somatic embryogenesis via two kinds of pathways, that(More)
Speculative execution is a promising approach for exploiting parallelism in many programs, but it requires efficient schemes for detecting conflicts between concurrently executing threads. Prior work has argued that checking semantic commutativity of method invocations is the right way to detect conflicts for complex data structures such as kd-trees.(More)
Thirteen slow-growing rhizobial strains isolated from root nodules of soybean (Glycine max L.) grown in Daqing city in China were classified in the genus Bradyrhizobium based on 16S rRNA gene sequence analysis. Multilocus sequence analysis of IGS, atpD, glnII and recA genes revealed that the isolates represented a novel clade in this genus. DNA-DNA(More)
To investigate the community composition and biogeography of soybean rhizobia in Xinjiang, a total of 151 strains were investigated with RFLP and phylogenetic analyses of 16S rRNA gene, 16S–23S intergenic spacer, three housekeeping genes (atpD, glnII and recA), and two symbiotic genes (nifH and nodC), as well as cross-nodulation. Two rhizobial species,(More)
In the present study, a total of 154 bacterial strains isolated from nodules of eighteen Vicia species mainly grown in the temperate Chinese provinces were characterized by ARDRA, ITS PCR–RFLP, BOX-PCR, sequencing of 16S rDNA, nodC, nifH, atpD and glnII, and nodulation tests. The results demonstrated that most of the R. leguminosarum strains were effective(More)
A total of 128 bacterial test strains originated from Astragalus, Caragana, Gueldenstaedtia, Medicago, Melilotus, Oxytropis, Trifolium, and Vicia grown in Tibet were characterized phenotypically and genomically. Based upon the consensus of grouping results, they were identified as 16 putative species. Twenty-five test strains belonging to seven putative(More)