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61.
Curt Herbst 《Development genes and evolution》1937,136(1):147-168
Ohne Zusammenfassung 相似文献
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Shi S Zhu S Gerritz SW Esposito K Padmanabha R Li W Herbst JJ Wong H Shu YZ Lam KS Sofia MJ 《Bioorganic & medicinal chemistry letters》2005,15(18):4151-4154
The solid-phase synthesis of a library based on the natural product anisomycin is described. The resulting library was tested against a panel of bacterial and fungal targets, and active compounds were identified in a Staphylococcus aureus whole-cell assay and an efflux-deficient fungal whole-cell assay. 相似文献
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Adolfo Horn Jr. Carlos A.L. Filgueiras Marcelo H. Herbst Paulo Sérgio Santos R. Alan Howie 《Inorganica chimica acta》2004,357(14):4240-4246
The reaction of VIVO(salen) with [Et4N][SnBr3] in air proceeds via an initial reduction to give a [VIII (salen)]+ intermediate, which is then oxidised to dark green [VVO(salen)(H2O)]Br, 1. As determined by X-ray crystallography, 1 in the solid state contains hexacoordinate vanadium. 51V NMR spectra indicate that dissociation of the aqua ligand occurs to give a pentacoordinated [VVO(salen)] cation in methanol-d4 solution, while in DMSO-d6 solutions, coordination of the solvent occurs to give [VVO(salen)(DMSO-d6)]+. The colour of 1 can be accounted for by Ooxo → VV and phenolate → VV LMCTs. Results from this study have led to the re-assignment of LMCTs and V-N and V-Ophenolate stretching frequencies in the IR spectrum. Cyclic voltammetry of 1 indicates three redox processes. The first is typical of [VO(salen)]/[VO(salen)]+ couple and the other two are bromide oxidations. 相似文献
66.
JIA ZHI‐YING SUN XIAO‐WEN LIANG LI‐QUN LI DA‐YU LEI QING‐QUAN 《Molecular ecology resources》2006,6(4):1282-1284
We report the development of 11 polymorphic microsatellite loci in pacific white shrimp (Litopenaeus vannamei) using an unenriched genomic library. The number of the alleles ranged from two to 18 and observed hererozygosity ranged from 0.0286 to 0.9429, indicating that these markers will be useful for population studies and mapping in pacific white shrimp. Seven loci were detected deviated from Hardy–Weinberg, caused by deficiency of heterozygote, suggesting population genetic structure across the sampled population. No evidence for linkage disequilibrium was found. 相似文献
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Allison A. Oliver Michael T. Bogan David B. Herbst Randy A. Dahlgren 《Hydrobiologia》2012,681(1):117-130
Rivers, lakes and wetlands are good examples of ecosystems that provide multiple, concurrent, services to mankind. Human society
has often exploited these systems by enhancing one ecosystem service at the expense of another. Loch Leven, Scotland, UK,
is a good example of this. Over the past 150 years, the lake has been subjected to hydrological modification, fish stocking
and pollution control to improve the delivery of key goods and services. This study uses historical records to explore the
results of these interventions on the ecosystem services that were targeted for improvement and the knock-on effects on other
services provided by the lake. The results suggest that, when management changes are being considered to enhance particular
ecosystem services, the potentially damaging effects on other ecosystem services should be taken into account. This requires
a better understanding of the role of ecosystem function in delivering ecosystem services, and of the links between multiple
ecosystem services, than is currently available. While further research is clearly needed, the value of long-term datasets
in providing knowledge and understanding through ‘hindsight’ should not be underestimated. The study concludes that successful
management actions are likely to be those that incorporate lessons learned from previous decisions. 相似文献
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S. V. CUADRA M. H. COSTA C. J. KUCHARIK H. R. DA ROCHA J. D. TATSCH G. INMAN‐BAMBER R. P. DA ROCHA C. C. LEITE O. M. R. CABRAL 《Global Change Biology Bioenergy》2012,4(1):36-48
Scientists predict that global agricultural lands will expand over the next few decades due to increasing demands for food production and an exponential increase in crop‐based biofuel production. These changes in land use will greatly impact biogeochemical and biogeophysical cycles across the globe. It is therefore important to develop models that can accurately simulate the interactions between the atmosphere and important crops. In this study, we develop and validate a new process‐based sugarcane model (included as a module within the Agro‐IBIS dynamic agro‐ecosystem model) which can be applied at multiple spatial scales. At site level, the model systematically under/overestimated the daily sensible/latent heat flux (by ?10.5% and 14.8%, H and λE, respectively) when compared against the micrometeorological observations from southeast Brazil. The model underestimated ET (relative bias between ?10.1% and –12.5%) when compared against an agro‐meteorological field experiment from northeast Australia. At the regional level, the model accurately simulated average yield for the four largest mesoregions (clusters of municipalities) in the state of São Paulo, Brazil, over a period of 16 years, with a yield relative bias of ?0.68% to 1.08%. Finally, the simulated annual average sugarcane yield over 31 years for the state of Louisiana (US) had a low relative bias (?2.67%), but exhibited a lower interannual variability than the observed yields. 相似文献