نتایج جستجو برای: 500 m length
تعداد نتایج: 891154 فیلتر نتایج به سال:
Very large DNA molecules were separated by electrophoresis in horizontal slab gels of dilute agarose. Conditions of electrophoresis were developed using intact DNA molecules from the bacterial viruses lambda, T4 and G. Their DNAs have molecular weights (M) of 32 million, 120 million, and 500 million, respectively. Several electrophoresis conditions were found which give sufficiently high mobili...
The Australian National University (ANU) has worked for many years on paraboloidal dish solar concentrators and demonstrated a 400m system in 1994. The commercialization of this technology has involved a re-design of the Big Dish concept for mass production. The new design is a 494 m2 concentrator with 13.4 m focal length and altitude-azimuth tracking. It uses 380 identical spherical 1.17m × 1....
root-knot nematodes are one of the limiting factors in seedling production and new olive gardens establishment in iran. in view of find resistance cultivars to root-knot nematodes, importance of careful identification of species and races are clarified. in order to investigate root-knot nematodes on olive, soil and root samples of gardens and nursery in gorgan area were collected. in this study...
Plant growth in a controlled environment system is highly dependent on the availability of light. The light-emitting diode (LED) capable providing needed quality and quantity light for plant. purpose this study was to determine effect white LED intensity vitro propagated apple (M-9) seedlings system. Seedlings were grown 30 days under five different intensities: 100–500 (L1), 250–500 (L2), 500–...
Using the South Pole Acoustic Test Setup (SPATS) and a retrievable transmitter deployed in holes drilled for the IceCube experiment, we have measured the attenuation of acoustic signals by South Pole ice at depths between 190 m and 500 m. Three data sets, using different acoustic sources, have been analyzed and give consistent results. The method with the smallest systematic uncertainties yield...
a r t i c l e i n f o Keywords: Fractional snow covered area Snow covered extent Downscaling Topography Hillslope scale Landsat NDSI Digital elevation models Snow remote sensing Watershed hydrology Accurate characterization of snow-covered area (SCA) and snow water equivalent (SWE) in complex terrain is needed to improve estimation of streamflow timing and volume, and is important for land surf...
This study was designed to assess the vital issue of gene target length and PCR assay performance in relation to the detection of Mycobacterium tuberculosis in clinical specimens. Two PCR assays that amplify fragments of varying lengths from the devR gene of M. tuberculosis were evaluated. Using M. tuberculosis DNA the ‘shortlength’ PCR assay detected 250–500 genome equivalents vs. 500–1000 gen...
BACKGROUND Traffic is a source of environmental exposures, including benzene, which may be related to childhood leukemia. OBJECTIVES A national registry-based case-control study [ESCALE (Etude Sur les Cancers et les Leucémies de l'Enfant, Study on Environmental and Genetic Risk Factors of Childhood Cancers and Leukemia)] carried out in France was used to assess the effect of exposure to road ...
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