نتایج جستجو برای: agricultural clusters
تعداد نتایج: 214338 فیلتر نتایج به سال:
Phenazine and its derivatives are very important secondary metabolites produced from Pseudomonas spp. and have exhibited broad-spectrum antifungal and antibacterial activities. However, till date, there are few reports about marine derived Pseudomonas and its production of phenazine metabolites. In this study, we isolated a marine Pseudomonas aeruginosa strain PA31x which produced natural produ...
This paper examines drivers of land-cover change in the U.S. Great Plains in the last half of the twentieth century. Its central aim is to evaluate the dynamics of grassland preservation and conversion, across the region, and to identify areas of grassland that were never plowed during the period. The research compares land-cover data from 400 sample areas, selected from and nested within 50 co...
The demonstrated link between the emergence of H3N2 variant (H3N2v) influenza A viruses (IAVs) and swine exposure at agricultural fairs has raised concerns about the human health risk posed by IAV-infected swine. Understanding the antigenic profiles of IAVs circulating in pigs at agricultural fairs is critical to developing effective prevention and control strategies. Here, 68 H3N2 IAV isolates...
Click beetles (Coleoptera: Elateridae) represent one of the largest groups of beetle insects. Some click beetles in larval form, known as wireworms, are destructive agricultural pests. Morphological identification of click beetles is generally difficult and requires taxonomic expertise. This study reports on the DNA barcoding of Japanese click beetles to enable their rapid and accurate identifi...
Genetic improvement is the fundamental basis for improving nitrogen-use efficiency. A better understanding of genetic factors controlling nitrogen uptake and utilization is required for crop genetic improvement. In this study, we identified the quantitative trait loci (QTLs) associated with traits of nitrogen uptake and utilization by using the single-sequence repeat marker method and a recombi...
The present study aims at assessing changes in macroinvertebrate metrics in relation to the effects of agricultural land use in a lowland river. Cluster analysis techniques were applied to group river sites according to the similarity of total and relative abundances of taxonomic groups. Riverbed morphology and riparian vegetation were the main environmental variables differentiating between cl...
The study concerns the formation of human capital determined by level education, quality higher and secondary special education. Changes in social, economic, technological, information fields require territorial organization educational objects, namely, clusters various profiles. purpose is to develop concept city planning cluster Kazan urban agglomeration, determine its specifics profile, taki...
Considering the great application of Sea Surface Temperature (SST) in climatic and oceanic investigations, this research deals with the investigation of spatial autocorrelation pattern of SST data obtained from AVHRR sensor for Gulf of Oman from 2003 to 2015 (13 years). To achieve this aim, two important spatial statistics, i.e. global Moran and Anselin local Moran’s I were employed within mont...
OBJECTIVE To define the geographical distribution of HIV infection and the community characteristics associated with HIV prevalence in a rural population of Uganda. DESIGN Seroprevalence survey and interviews of the population aged 13 years and older in 21 randomly selected clusters. SETTING Rural population of Rakai district, south west Uganda. SUBJECTS 1292 adults, of whom 594 men and 6...
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