نتایج جستجو برای: buried features
تعداد نتایج: 533750 فیلتر نتایج به سال:
Buried pipes in the modern societies are considered as lifelines with a vital and essential role in the human life cycle. The performance of buried pipes is affected by many factors such as ground surface subsidence. In this paper, the effect of subsidence on pipelines is investigated using a three-dimensional numerical modeling developed in FLAC3D software for four types of most commonly used ...
مقدمه: نوکاردیا باکتریهای گرم مثبت، هوازی و اسید فاست نسبی هستند که طیف وسیعی از عفونتهای حاد و مزمن را در حیوانات و انسانها را ایجاد میکنند. خاک و سایر منابع محیطی خواستگاه طبیعی این گروه از باکتریها میباشد. گونههای نوکاردیا قادرند در منابع محیطی بیمارستانها باقیمانده و در میزبانان نقص سیستم ایمنی عفونتهای کشندهای را سبب شوند. هدف از این مطالعه، مقایسه و ارزیابی دو روش جداسازی نوکار...
We demonstrate the imaging of buried features in a microstructure—a tiny hole in an aluminum thin film covered by a chromium layer—with nanometer lateral resolution using a transient temperature distribution restricted to within ;0.5 mm of the sample surface. This is achieved by mapping photothermally induced megahertz surface vibrations in an atomic force microscope. Local thermal probing with...
Temperature-sensitive (TS) mutants are powerful tools to study gene function in vivo. These mutants exhibit wild-type activity at permissive temperatures and reduced activity at restrictive temperatures. Although random mutagenesis can be used to generate TS mutants, the procedure is laborious and unfeasible in multicellular organisms. Further, the underlying molecular mechanisms of the TS phen...
On the outskirts of cities landfill bodies are formed, territories which later used in urban planning. Over buried soils represent construction and household garbage, methane flows worsen environmental conditions negatively affect psychosomatic health residents. The goal was to study emissions from various landfills Moscow. Our on urbanized ecosystems Moscow revealed different soils. Thus, over...
We demonstrate theoretically and experimentally a novel epidetection scheme for coherent anti-Stokes Raman scattering (CARS) microscopy that significantly improves the detection sensitivity. Calculations show that epidetected CARS (E-CARS) signals are present for scatterers smaller than the wavelength of light, whereas the large background signals from the surrounding bulk solvent are suppresse...
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