نتایج جستجو برای: ژن tufa
تعداد نتایج: 15989 فیلتر نتایج به سال:
Travertine/Tufa landscape is an important heritage and ecological wealth given to mankind by nature. itself has excellent scientific aesthetic value, mostly with geological archives such as volcanoes, tectonics, glaciers, well fingerprints referring climate evolution of life. However, these travertine/tufa landscapes also face degradation disappearance caused change, natural disasters, human ac...
To study the geological environmental records of alpine-karst-type tufa deposits in eastern margin Tibetan Plateau, calcareous profile exposed by “8.8” Jiuzhaigou earthquake was taken as research object and combined with a field investigation. Further, petrography, sedimentology, chronology, elemental geochemistry were studied analyzed. The results show following. (1) Sparkling Lake deposited u...
BACKGROUND Small colony variants (SCVs) are slow-growing bacteria, which often show increased resistance to antibiotics and cause latent or recurrent infections. It is therefore important to understand the mechanisms at the basis of this phenotypic switch. METHODOLOGY/PRINCIPAL FINDINGS One SCV (termed PAO-SCV) was isolated, showing high resistance to gentamicin and to the cephalosporine cefo...
â â â parsian alluvial fan system is a part of asyab-kharabeh fluvial system that response it to quaternary climate changes is the main goal of this study. for this aim, climatic proxies and traces in alluvial fan structure were investigated base d o n four categories: aggradation and degradation phases, debris flows, size changes in deposited materials and formation of alluvial fan tufas. pri...
Ulva -like green algae are notoriously difficult to distinguish due their morphological variability and/or similarity. DNA barcoding approaches therefore currently essential for reliable identification. However, such often fail when rare or inconspicuous species be detected in large mixed populations of species, example, at early stages following the introduction into new habitats. We developed...
A comparative study was carried out to evaluate the fatty acid profile and physicochemical qualities of oil extracted from unfermented fermented seeds Annona squamosa. A. squamosa powdered, were using soxhlet extraction. The composition identified GC-MS. physiochemical properties determined standard analytical methods. Unfermented had a total saturated (TSFA) 37.41%, which palmitic most predomi...
Green tides are a serious global ecological disaster; the largest occur in Southern Yellow Sea (SYS). Early-stage green SYS composed of four species (Ulva prolifera, Ulva flexuosa, linza, and compressa). We found that U. aragoensis is constituent based on molecular data. Furthermore, this study re-evaluated proportion it was more prevalent micro-propagules cultured from surface seawater during ...
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