نتایج جستجو برای: counting speed
تعداد نتایج: 243564 فیلتر نتایج به سال:
BACKGROUND The quantitative analysis of foci plays an important role in many cell biological methods such as counting of colonies or cells, organelles or vesicles, or the number of protein complexes. In radiation biology and molecular radiation oncology, DNA damage and DNA repair kinetics upon ionizing radiation (IR) are evaluated by counting protein clusters or accumulations of phosphorylated ...
The uncertainty in measurements of gross alpha and beta activities in water samples by liquid scintillation counting with alpha/beta discrimination has been evaluated considering the problems typical of low-level measurements of environmental samples. The use of a pulse shape analysis device to discriminate alpha and beta events introduces a correlation between some of the input quantities, and...
objective: to systematically identify the various methods of speed management and their effects. methods: a systematic search was performed in science direct, ovid medline, scopus, pubmed and proquest databases from april to june 2015. hand searching and reference of selected articles were used to improve article identification. articles published after 1990 which had reported on efficacy/effec...
present study is an extension of earlier work carried out on two-lane two way roads in the two provinces of pakistan i.e. n-25, n-55 and n-5 regarding the measure of operating speed and development of operating speed prediction models. curved sections of two-lane rural highways are the main location of run-off road accidents. in addition to that the road alignment having combination of geometri...
“The work described in this paper was inspired by the practical need to measure C14 concentrations in a large number of liquid chromatography cuts. These cuts varied in character, with some containing only clear hydrocarbons, while others contained alcohol and/or colored compounds. Counting efficiency differed for each sample, and the necessary measurement of counting efficiency by the internal...
Over the last few decades many techniques have been developed for determination of Sr/Y in the environment. Čerenkov counting technique (developed in the 1960s) is widely used, but can be further developed by the application of emerging technologies. For example, it is believed that the application of the triple-to-double coincidence ratio (TDCR) liquid scintillation counting method can be used...
Crowd detection has various applications nowadays. However, detecting humans in crowded circumstances is difficult because the features of different objects conflict, making cross-state impossible. Detectors overlapping zone may therefore overreact. In this paper, real-time people counting proposed using a model YOLOv5 (You Only Look Once) algorithm and KCF (kernel correlation filter) algorithm...
The optimal formula for calculating the total number of hemocytes (HTN) Australian red-claw crayfish (Cherax quadricarinatus) has been established, which allows optimizing time counting HTN without re-ducing accuracy. Methodical recommendations on preparing a hemolymph sample, calculation and differentiated are given. It was found out that differences in minimal when using different formulas, i...
The method of optimal measurement counting time in Gamma spectrometry for soil samples was studied. Gamma spectrometry was done based on minimum detectable activity using the HPGe- p type with efficiency of 30% and FWHM 1.7keV (for 1.33 MeV 60Co). The samples were IAEA-RG Th-1, IAEA-RGU-1 and IAEA-RGK-1 prepared in bottles. The measurements were done for 12 different counting times from 5 min t...
We explore the relationship among three coronal mass ejections (CMEs), observed on 28 October 2003, 7 November 2004, and 20 January 2005, the type II burst-associated shock waves in the corona and solar wind, as well as the arrival of their related shock waves and magnetic clouds at 1 AU. Using six different coronal/interplanetary density models, we calculate the speeds of shocks from the frequ...
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