112,985 research outputs found
Cryptomonas uralensis Martynenko, Gusev, Kulizin & Guseva 2020, sp. nov.
No full textCryptomonas uralensis Martynenko, Gusev, Kulizin & Guseva sp. nov. Figs 2–12 Diagnosis Cells (absolute minimal and maximal values of strain UR168) 15–26 µm long, 8–17 µm wide, 8–12 µm thick. Cells more or less flattened in dorso-ventral plane, in ventral view elliptical to ovoid. In lateral view with oblique or rounded apex and rounded antapex. One plastid with two to four pyrenoids. Species differs from other species of the genus by the order of nucleotides in nuclear ITS2, LSU and SSU rDNA gene sequences. Etymology The species name derived from “Ural”, the region from which this taxon was described. Type material Holotype RUSSIA • Solikamsk town, water-body in the Usolka River flood plain; 59°38′59″ N, 56°44′57″ E; 2014; collected by N.A. Martynenko; strain UR168; GenBank MN509781, MN509779; MHA [Cryptomonas uralensis Russia Martynenko 20-2 MHA, strain UR168]. The holotype is a large drop of unfixed dried cells of the strain UR168 (= IPPAS H-2046) on water colour paper (hic designatus), deposited at MHA (Herbarium, Main Botanical Garden, Botanicheskaya Str. 4, Moscow, 127276, Russia) under the designation Cryptomonas uralensis Russia Martynenko 20-2 MHA, strain UR168. Representative living strain and DNA sample are kept at IPPAS. Representative DNA sequences GenBank accession numbers MN 509781 (nuclear ITS 2 and partial nuclear LSU rDNA), and MN 509779 (nuclear SSU rDNA). Authentic strain UR168 (= IPPAS H-2046). Type locality A water-body in the Usolka River flood plain, Solikamsk town, Russia. Latitude/Longitude 59°38′59″ N, 56°44′57″ E, collected by N.A. Martynenko in 2014. Other representative culture UR167, GenBank accession numbers MN 509780 (nuclear ITS 2 and partial nuclear LSU rDNA), and MN 509778 (nuclear SSU rDNA). Geographical distribution To date, Cryptomonas uralensis sp. nov. has only been observed at the type locality. At the time of collection, the pH was 6.5, temperature 18°C.Published as part of Martynenko, Nikita A., Gusev, Evgeniy S., Kulizin, Pavel V., Guseva, Elena E., McCartney, Kevin & Kulikovskiy, Maxim S., 2020, A new species of Cryptomonas (Cryptophyceae) from the Western Urals (Russia), pp. 1-12 in European Journal of Taxonomy 649 on page 5, DOI: 10.5852/ejt.2020.649, http://zenodo.org/record/383610
Mallomonas pseudocorymbosa Gusev, Martynenko & Shkurina 2023, sp. nov.
No full text<i>Mallomonas pseudocorymbosa</i> Gusev, Martynenko & Shkurina <i>sp. nov.</i> (Figure 2). <p> <b>Diagnosis:</b> Scales are oval, tripartite, 4.8–5.9 × 3.3–4.3 µm in size, with or without a dome. The dome is large, rounded, oval or asymmetrical. The V-rib is acute, slightly hooded and its arms continuous with the anterior submarginal ribs. Anterior submarginal ribs are well developed. The anterior flange is wide, especially on the domeless scales, with a row of base plate pores at each side. The posterior flange is wide, with numerous base plate pores distributed on the surface. The shield and posterior flange have a secondary siliceous layer forming circular or elongated oval meshes unevenly distributed on the surface often with areas without development of the secondary layer. Numerous pores are placed on the basal plate. The posterior upturned rim is narrow, with inner struts visible only on TEM images, encircles less than a half of the scale perimeter. Bristles are 13–25 μm long, curved and serrated at the distal half. Shorter bristles have a bifurcated tip with a long terminal spine, and longer bristles have a prolonged thread-like terminal part. Cysts unknown.</p> <p> <i>Holotype (here designated):</i> Portion of a single gathering of cells on SEM stub No. CD8 deposited at the Herbarium, Papanin Institute for Biology of Inland Waters RAS, Borok (IBIW). Material from Ahn Hai Lake, Côn SƠn Island, Bà Rịa-Vũng Tàu Province, Vietnam. Figure 2C illustrates a representative scale from the holotype specimen.</p> <p> <i>Type Locality:</i> Ahn Hai Lake, Côn SƠn Island, Bà Rịa-Vũng Tàu Province, Vietnam. Latitude / Longitude: 8° 40.645’ N 106° 35.867’ E. At the time of collection, the pH was 6.5, temperature 30 °C, and specific conductance 201 µS cm-1. Material was collected by E.S. Gusev and Nguyen-Ngoc Lam on 3 May 2015.</p> <p> <i>Etymology:</i> The species name is derived from the fact that its scales resemble, and could be confused with, those of <i>Mallomonas corymbosa</i>.</p> <p> <i>Distribution:</i> This species has been observed in 17 localities in 13 provinces of Vietnam (Table 1). Scales of this species were also observed in Bangladesh (Takahashi & Hayakawa 1979), China (Wei &Yuan 2001, 2013; Wei <i>et al</i>. 2014), Brazil (Franceschini & Couté 1991)and South Africa (Janse van Vuuren <i>et al</i>. 2022). <i>Mallomonas pseudocorymbosa</i> was found at wide ranges of environmental parameters: pH from 6.1 to 8.6, specific conductance from 62 to 2370 µS cm-1, chlorophyll <i>a</i> values from 5 to 76 µg l –1, and temperature 17–39 ºC (Table 1).</p>Published as part of <i>Gusev, Evgeniy, Martynenko, Nikita, Shkurina, Nataliya & Dien, Tran Duc, 2023, Description of a new species of the genus Mallomonas from section Mallomonas (Synurales, Chrysophyceae) in the tropics, pp. 59-68 in Phytotaxa 618 (1)</i> on page 62, DOI: 10.11646/phytotaxa.618.1.5, <a href="http://zenodo.org/record/8389917">http://zenodo.org/record/8389917</a>
Mitochondrial 16S rRNA gene encodes a functional peptide, a potential drug for Alzheimer’s disease and target for cancer therapy
No full textTime Irreversibility and complexity of heart rate variability
No full textIntrodution. The heart rate variability is based on measuring (time) intervals between R-peaks (of RRintervals) of an electrocardiogram and plotting a rhythmogram on their basis with its subsequent analysis by
various mathematical methods. Using nonlinear methods in HRV and ECG analysis has proven to be very
advantageous. Time irreversibility is a fundamental parameter of a system, it defines justification and
necessity of applying nonlinear methods for analysis of a system s dynamics.
Objective. We propose an algorithm for testing the probability of a time series' irreversibility, showing its
effectiveness in the process of HRV analysis. In this article, complexity of HRV will be described by two
parameters: entropy EnRE [18] and correlation dimension D2 [19]. Naturally, the chosen parameters EnRE
and D2 in no way can be used for comprehensive description of complexity of HRV, but we will be able to
tress the necessary sufficiency of such an approach.
Materials and methods. We used long-term HRV records by Massachusetts Institute of Technology
Beth Israel Hospital (MIT-BIH) from [15], a free-access, on-line archive of physiological signals for
Normal Sinus Rhythm (NSR) RR Interval, Congestive Heart Failure (CHF) RR Interval and Atrial Fibrillation
(AF) Databases [16]. In [17], we have developed a special modification to the classic Mann-Whitney (MW)
U-test in order to use the test for comparison of Time Series with an equal number of elements N Time
Series MW M-test. Here the new statistical -test was proposed for finding the probability of time series'
irreversibility.
Conclusion. In this article, we propose a statistical -test for assessment of probability of irreversibility
of time series. It has been shown that the new statistical -test accurately identifies times series reversibility
and irreversibility in known cases of synthetic data. For long-term HRV records of MIT-BIH database for
NSR, CHF and AF groups, we have compared values of z-score, which statistically defines the limit of
irreversibility of time series, and values of HRV complexity indicators: entropy EnRE and correlation
dimension D2. We have noted the following:
HRV is time irreversible nonlinear dynamic process, with the exception of AF episodes;
nonlinear indicators of HRV complexity entropy EnRE and correlation dimension D2 have been
analyzed, and there is a conclusive difference between NSR and analyzed pathological states;
analyzed time series have been presented in D2-z-EnRE phase space, and their reliable separability has
been shown. It can be stated that the analyzed D2-z-EnRE phase space is sufficient for research of nonlinear
HRV events in this cas
author-bios-SRD-19-0063.R1 – Supplemental material for The Network Structure of Police Misconduct
No full textSupplemental material, author-bios-SRD-19-0063.R1 for The Network Structure of Police Misconduct by George Wood, Daria Roithmayr and Andrew V. Papachristos in Socius</p
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
No full text“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Research of steel E – class weldability
No full textKostin, A. Research of steel E – class weldability / A. Kostin, V. Martynenko, A. Labartkava // WORKS OF GTU. – TBILISI: Publishing House “Technical University”, 2016. – № 4 (502). – С. 102–109.The purpose of this research is to compare of steel E rolled sheet analytical and experimental methods of weldability assessment. The mathematical models, designed by Paton Institute and based on the analysis of the literature data and the research of about 150 diagrams of austenite thermokinetics decay, were used for the calculation. The analysis of the received results has showed that the analytical methods of the calculation of the mechanical characteristics of heataffected zone (HAZ) high temperature parts by use of the chemical content, taking into account the speed of the welded junctions cooling, give the high level of reliability (at temperature which are above zero) and can be used for the original assessment of the metal peculiarities of HAZ steel E rolled sheet junctions of big thickness. The analytical assessment of the impact effect does not provide the reliable result. It is connected with that the range of the real values has the error in each zone of the welded junction at limits 30 ÷ 500 %. It reduces the correlation coefficient of the received results. It makes impossible the accurate prediction of HAZ metal impact effect values
COOPERATIVE EFFECTS IN OPTICAL AND ESR SPECTROSCOPY OF NITROGEN ATOMS ISOLATED BY SOLIDIFICATED HELIUM
No full text1. E.B. Gordon, V.V. Khmelenko, A.A. Pelmenev, E.A. Popov and O.P. Pugachev, Chem. Phys. Lett. 155(3), 301-304 (1989). 2. R.E. Boltnev, E.B. Gordon, V.V. Khmelenko, A.A. Pelmenev, I.N. Kusliniskaya, M.V. Martynenko, E.A. Popov and A.V. Shestakov, Chem. Phys. 189(2), 367-382 (1994). 3. R.E. Boltnev, E.B. Gordon, V.V. Khmelenko, M.B. Martynenko, A.A. Pelmenev, E.A. Popov and A.F. Shestakov, J. Chim. Phys. 92(2), 362-383 (1995).Author Institution: Institute for Energy Problems of Chemical Physics (branch)The heavy guest particles embedded to superfluid helium can cause its . The so-called Impurity Helium Solid Phase (IHSP) being stable then up T = 7K shows the regular arrangement of the impurities with their reliable isolation by helium atoms. The feasibility of previously excited species capture to IHSP may be achieved. So metastable N(D) atoms display extremely long-lived, more than s, luminescence. Their radiative decay turns out to be caused solely by excimer-like state formation with accidentally neighbouring heavy . That was proved for N(D)-Rg pairs (Rg = Ne, Ar, Kr, Xe) by both spectra shapes and emission lifetimes observed. For N(D)- state the comparison of atomic and rovibronic spectra evidences their excimer nature as . The distances between neighbour N atoms in IHSP, 1 mm, are small enough for cooperative bulk magnetic effects appearances. ESR experiments with N(S) atoms show the effects of either magnetic alignment or spin-exchange narrowing
Fig. 13 in A new species of Cryptomonas (Cryptophyceae) from the Western Urals (Russia)
No full textFig. 13. Bayesian phylogenetic tree of the partial small subunit rDNA (SSU rDNA) and large subunit ribosomal DNA (LSU rDNA) combined data set. The Bayesian posterior probability (left) and maximum likelihood bootstrap value (right) are shown. Scale bar represents estimated number of substitution per site.Published as part of Martynenko, Nikita A., Gusev, Evgeniy S., Kulizin, Pavel V., Guseva, Elena E., McCartney, Kevin & Kulikovskiy, Maxim S., 2020, A new species of Cryptomonas (Cryptophyceae) from the Western Urals (Russia), pp. 1-12 in European Journal of Taxonomy 649 on page 7, DOI: 10.5852/ejt.2020.649, http://zenodo.org/record/383610
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