ABSTRACT
The paper presents the latest results of the studies of small-scale fluctuations in a turbulent flow of solar wind (SW) using measurements with extremely high temporal resolution (up to 0.03 s) of the bright monitor of SW (BMSW) plasma spectrometer operating on astrophysical SPECTR-R spacecraft at distances up to 350,000 km from the Earth. The spectra of SW ion flux fluctuations in the range of scales between 0.03 and 100 s are systematically analysed. The difference of slopes in low- and high-frequency parts of spectra and the frequency of the break point between these two characteristic slopes was analysed for different conditions in the SW. The statistical properties of the SW ion flux fluctuations were thoroughly analysed on scales less than 10 s. A high level of intermittency is demonstrated. The extended self-similarity of SW ion flux turbulent flow is constantly observed. The approximation of non-Gaussian probability distribution function of ion flux fluctuations by the Tsallis statistics shows the non-extensive character of SW fluctuations. Statistical characteristics of ion flux fluctuations are compared with the predictions of a log-Poisson model. The log-Poisson parametrization of the structure function scaling has shown that well-defined filament-like plasma structures are, as a rule, observed in the turbulent SW flows.
ABSTRACT
Calcium deposits were localized using the combined oxalate-pyroantimonate technique in follicle-enclosed oocytes fixed in situ. These deposits can be observed within vacuoles, mitochondria, and on the surface of yolk granules as well as in the caryoplasm, but are absent from the endoplasmic reticulum. Isolation of the oocyte from the follicle resulted in the immediate depletion of these calcium deposits. Replenishment of these deposits started during the first 8 hr of in vitro culture of the oocyte and they were gradually replenished to the levels observed before the liberation of oocytes during in vitro maturation to the stage of metaphase II.
Subject(s)
Calcium/analysis , Oocytes/metabolism , Animals , Cells, Cultured , Female , Oocytes/ultrastructure , Ovary/cytology , Swine, MiniatureABSTRACT
24-hour ph-metry of the oesophagus is a standard examination method in patients with reflux complaints. For objective evaluation of the record the following points are most important: 1. calibration of the instrument, 2. precise placement of the pH-probe, preferably under manometric control, 3. elimination of medication (inhibitors of proton pump, H-2 blockers, antacids, prokinetic preparations), 4. cooperation of the patient. A 24-hour record makes it possible to analyze in detail the type of reflux, and when using available software, also its quantity.
