نتایج جستجو برای: quercus
تعداد نتایج: 6897 فیلتر نتایج به سال:
Background and purpose: Dental caries is a pathological infectious disease. It begins with the formation of dental plaques which is a structurally and functionally organized biofilm. Streptococcus mutans is the most important bacterium in the formation of dental plaque and dental caries. This study aimed at evaluating the antibacterial and antibiofilm activity of Quercus infectoria galls agains...
Background and Objective: Second-degree burns are associated with several complications such as infection, septicemia, and unpleasant skin appearance and are one of the main causes of in-hospital mortality. Therefore, this study was designed to determine the therapeutic effects of Q. persica fruit skin on the healing of second-degree burn wounds. Materials and Methods: In this experimental stu...
BACKGROUND For competing species to coexist, individuals must compete more with others of the same species than with those of other species. Ecologists search for tradeoffs in how species might partition the environment. The negative correlations among competing species that would be indicative of tradeoffs are rarely observed. A recent analysis showed that evidence for partitioning the environ...
Nature of Work: Quercus phillyreoides A. Gray (ubame oak) is an attractive, evergreen species indigenous to Japan and China. It grows as a shrub or small tree reaching a height of 6 to 9 m (20 to 30 ft) (3). Although relatively unknown in the United States, it appears Q. phillyreoides has great potential for use in landscapes in the southern United States in addition to being well suited for ur...
The oak wilt pathogen, Ceratocystis fagacearum, may be another example of a damaging, exotic species in forest ecosystems in the United States. Though C. fagacearum has received much research attention, the origin of the fungus is unknown. The pathogen may have been endemic at a low incidence until increased disturbances, changes in land use, and forest management created conditions favorable f...
/?-Glucogallin, Digalloyl-/?-D-glucose, Trigalloyl-/?-D-glucose, G alloyltransferase, G allotannin Biosynthesis, Quercus robur Cell-free extracts from oak (Quercus robur) leaves were found to contain at least two /?-glucogallin-dependent galloyltransferases. One enzyme catalyzed a rap id exchange o f the galloylm oiety o f /?-glucogallin with free glucose. A second enzym e fraction was show n t...
The genus Quercus comprises over 400 species found across the Northern Hemisphere [...]
The National Wildlife Refuge system is a vital resource for the protection and conservation of biodiversity and biological integrity in the United States. Surveys were conducted to determine the spatial and temporal patterns of fish, macroinvertebrate, and crayfish populations in two watersheds that encompass three refuges in southern Indiana. The Patoka River National Wildlife Refuge had the h...
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