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  1. Book ; Online: Analytical description of the time-over-threshold method based on the time properties of plastic scintillators equipped with silicon photomultipliers

    Karpushkin, N. / Finogeev, D. / Guber, F. / Lyapin, D. / Makhnev, A. / Morozov, S. / Serebryakov, D.

    2023  

    Abstract: A new high-granular compact time-of-flight neutron detector for the identification and energy measurement of neutrons produced in nucleus-nucleus interactions at the BM@N experiment, Dubna, Russia, at energies up to 4 AGeV is under development. The ... ...

    Abstract A new high-granular compact time-of-flight neutron detector for the identification and energy measurement of neutrons produced in nucleus-nucleus interactions at the BM@N experiment, Dubna, Russia, at energies up to 4 AGeV is under development. The detector consists of approximately 2000 fast plastic scintillators, each with dimensions of 40$\times$40$\times$25 mm$^3$, equiped with SiPM (Silicon Photomultiplier) with an active area of 6$\times$6 mm$^2$. The signal readout from these scintillators will employ a single-threshold multichannel Time-to-Digital Converter (TDC) to measure their response time and amplitude using the time-over-threshold (ToT) method. This article focuses on the analytical description of the signals from the plastic scintillator detectors equipped with silicon photomultipliers. This description is crucial for establishing the ToT-amplitude relationship and implementing slewing correction techniques to improve the time resolution of the detector. The methodology presented in this paper demonstrates that a time resolution at the 70 ps level can be achieved for the fast plastic scintillator coupled with silicon photomultiplier with epitaxial quenching resistors.
    Keywords Physics - Instrumentation and Detectors ; High Energy Physics - Experiment
    Subject code 621
    Publishing date 2023-08-16
    Publishing country us
    Document type Book ; Online
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  2. Article ; Online: Genetically determined volume of mesophyll cells of birch leaves as an adaptation of the photosynthetic apparatus to climate.

    Migalina, S V / Ivanova, L A / Makhnev, A K

    Doklady biological sciences : proceedings of the Academy of Sciences of the USSR, Biological sciences sections

    2014  Volume 459, Page(s) 354–357

    MeSH term(s) Acclimatization ; Adaptation, Physiological/genetics ; Betula/cytology ; Betula/genetics ; Betula/physiology ; Cell Size ; Chloroplasts/physiology ; Climate ; Mesophyll Cells/physiology ; Nitrogen/analysis ; Nitrogen/metabolism ; Photosynthesis ; Plant Leaves/cytology ; Plant Leaves/genetics ; Plant Leaves/physiology ; Siberia
    Chemical Substances Nitrogen (N762921K75)
    Language English
    Publishing date 2014-11
    Publishing country United States
    Document type Journal Article
    ZDB-ID 1256203-8
    ISSN 1608-3105 ; 0012-4966
    ISSN (online) 1608-3105
    ISSN 0012-4966
    DOI 10.1134/S0012496614060106
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  3. Article: Specific features of root system structure in the main forest-forming species of the Middle Urals growing on cinder dumps

    Kalashnikova, I. V / Makhnev, A. K

    Russian journal of ecology. 2013 Sept., v. 44, no. 5

    2013  

    Abstract: Specific features of root system formation in the main forest-forming species have been studied under conditions of natural regeneration or planting on large cinder dumps of district heat and power plants in the Middle Urals. Prospects for using these ... ...

    Abstract Specific features of root system formation in the main forest-forming species have been studied under conditions of natural regeneration or planting on large cinder dumps of district heat and power plants in the Middle Urals. Prospects for using these species for biological (forest) recultivation of cinder dumps are evaluated.
    Keywords forests ; natural regeneration ; planting ; power plants
    Language English
    Dates of publication 2013-09
    Size p. 375-380.
    Publishing place Springer-Verlag
    Document type Article
    ZDB-ID 1179775-7
    ISSN 1608-3334 ; 1067-4136
    ISSN (online) 1608-3334
    ISSN 1067-4136
    DOI 10.1134/S106741361305007X
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  4. Article: Trials of different provenances of white birches (section Albae) in population cultures in the Middle Urals

    Makhnev, A. K / Makhneva, O. V

    Russian journal of ecology. 2011 Mar., v. 42, no. 2

    2011  

    Abstract: Periodic monitoring (by age stages) of the growth energy and health of trees has been performed in population cultures of white birches established on a half-sib basis (for the first time in Russia). The results show that the pattern of growth and ... ...

    Abstract Periodic monitoring (by age stages) of the growth energy and health of trees has been performed in population cultures of white birches established on a half-sib basis (for the first time in Russia). The results show that the pattern of growth and development and the health (survival) of provenances tested in population cultures depend primarily on the ecobiological properties of birch species and also on the distance and direction of seed transfer.
    Keywords Betula ; energy ; growth and development ; monitoring ; trees ; Russia
    Language English
    Dates of publication 2011-03
    Size p. 93-97.
    Publisher SP MAIK Nauka/Interperiodica
    Publishing place Dordrecht
    Document type Article
    ZDB-ID 1179775-7
    ISSN 1608-3334 ; 1067-4136
    ISSN (online) 1608-3334
    ISSN 1067-4136
    DOI 10.1134/S106741361102007X
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  5. Article: Kharakteristika ochagov meningokokkovoĭ infektsii v muzhskikh kollektivakh zakrytogo tipa.

    Makhnev, M V / Makhnev, A V

    Zhurnal mikrobiologii, epidemiologii i immunobiologii

    2004  , Issue 5, Page(s) 31–36

    Abstract: A total of 257 foci of meningococcal infection in groups of servicemen were selectively examined in 1982-2002. From these groups 353 patients with generalized forms of the disease underwent hospitalization. Most of the foci had a single infection, the ... ...

    Title translation Characterization of the foci of meningococcal infection in closed groups of males.
    Abstract A total of 257 foci of meningococcal infection in groups of servicemen were selectively examined in 1982-2002. From these groups 353 patients with generalized forms of the disease underwent hospitalization. Most of the foci had a single infection, the proportion of foci with 10-40 patients was 82.6%. The meningococcal infection rate among humans in the foci was 25-37%, group A meningococci playing the leading role. In the structure of meningococcal infection generalized forms of infection constituted 16%, localized forms constituted 25% and inapparent forms (carriers)--59%. The formation of the morbidity structure was influenced by the type of the focus (with a single or multiple infection) and the character of morbidity for many years (during epidemic or at the period between epidemics). No absolute dependence of the level of meningococcal carrier state in the groups of servicemen on the appearance of the generalized forms of meningococcal infection was noted. Thus, both during epidemic and at the period between epidemics the population of meningococci, heterogeneous in its serological structure and differing in its clinical and epidemiological importance, constantly circulated with the leading role played by group A meningococci.
    MeSH term(s) Carrier State/epidemiology ; Carrier State/microbiology ; Disease Outbreaks ; Disease Reservoirs ; Humans ; Male ; Meningococcal Infections/epidemiology ; Meningococcal Infections/microbiology ; Military Personnel ; Neisseria meningitidis/classification ; Neisseria meningitidis/isolation & purification ; Russia/epidemiology ; Serotyping
    Language Russian
    Publishing date 2004-09
    Publishing country Russia (Federation)
    Document type English Abstract ; Journal Article
    ZDB-ID 218354-7
    ISSN 0372-9311 ; 0049-8726 ; 0372-8714
    ISSN 0372-9311 ; 0049-8726 ; 0372-8714
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  6. Article: Osobennosti nachala klinicheskogo techeniia maliarii u voennosluzhashchikh, pribyvshikh iz nemaliariogennykh regionov.

    Makhnev, M V / Makhnev, A V

    Voenno-meditsinskii zhurnal

    2004  Volume 325, Issue 7, Page(s) 26–34, 80

    Abstract: The specific features of initial period of vivax and tropical malaria were defined with the help of clinical-and-laboratory methods in two groups of servicemen (70 persons in each group) differed by the period of stay in tropics. For comparison 30 ... ...

    Title translation The specific features of malaria clinical course debut in servicemen arrived in tropics from non-malariogenic regions.
    Abstract The specific features of initial period of vivax and tropical malaria were defined with the help of clinical-and-laboratory methods in two groups of servicemen (70 persons in each group) differed by the period of stay in tropics. For comparison 30 similar patients, the tropics inhabitants, were investigated. In local inhabitants the course of all forms of malaria was rather mild with development of disease characteristic paroxysms in most of them. The reverse correlation of disease severity and period of servicemen' stay in tropics was revealed. For both forms of malaria the migrants compared with local inhabitants had the prodromal period and initial fever without typical paroxysms. The following debuts of malaria were revealed in servicemen: the frequent (influenza-like, arthralgia-like, gastrointestinal, bronchopneumonic, typhoid-like) and the rare (abdominal and painful, cerebral: meningeal and comatose, dysentery-like, tuberculosis-like, hemorrhagic). The shown features of malaria initial period in servicemen caused difficulties in its early diagnosis.
    MeSH term(s) Adolescent ; Adult ; Animals ; Antimalarials/therapeutic use ; Humans ; Malaria/classification ; Malaria/diagnosis ; Malaria/therapy ; Male ; Military Personnel ; Parasitemia/diagnosis ; Plasmodium ; Tropical Climate
    Chemical Substances Antimalarials
    Language Russian
    Publishing date 2004-07
    Publishing country Russia (Federation)
    Document type English Abstract ; Journal Article
    ZDB-ID 392041-0
    ISSN 0026-9050 ; 0300-9114
    ISSN 0026-9050 ; 0300-9114
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  7. Article: Intraspecific variability of triterpene content in the leaves of Betula pendula Roth

    Makhnev, A. K / Degtyarev, E. S / Migalina, S. V

    Contemp. Probl. Ecol.. 2012 Mar., v. 5, no. 2

    2012  

    Abstract: Changes in the content of dammarane-type triterpene alcohols in the leaves of silver birch (Betula pendula Roth) are studied for the first time along a zonal-climatic transect from the northern to southern borders of the species areal in the Trans-Ural ... ...

    Abstract Changes in the content of dammarane-type triterpene alcohols in the leaves of silver birch (Betula pendula Roth) are studied for the first time along a zonal-climatic transect from the northern to southern borders of the species areal in the Trans-Ural region. It is shown that populations of northern and southern regions differ concerning the triterpene content in leaves. A correlation between the content of triterpene alcohols in silver birch leaves and some climatic parameters is revealed. At the same time, the range of the intrapopulation variability of triterpene content is significantly less than that of the interpopulation variability, which indicates a high potential of population selection on the basis of this biochemical parameter.
    Keywords Betula pendula ; alcohols ; intraspecific variation ; leaves ; triterpenoids
    Language English
    Dates of publication 2012-03
    Size p. 179-184.
    Publishing place Springer-Verlag
    Document type Article
    ZDB-ID 2424032-1
    ISSN 1995-4263 ; 1995-4255
    ISSN (online) 1995-4263
    ISSN 1995-4255
    DOI 10.1134/S1995425512020096
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  8. Article: Changes of leaf morphology in Betula pendula roth and B. pubescens Ehrh. along a zonal-climatic transect in the Urals and Western Siberia

    Migalina, S. V / Ivanova, L. A / Makhnev, A. K

    Russian journal of ecology. 2010 July, v. 41, no. 4

    2010  

    Abstract: Leaf size, shape, and parameters of venation in Betula pendula and B. pubescens have been studied along a 1600-km latitudinal zonal transect in the Urals and Western Siberia. The results show that leaf size and venation density depend on the geographic ... ...

    Abstract Leaf size, shape, and parameters of venation in Betula pendula and B. pubescens have been studied along a 1600-km latitudinal zonal transect in the Urals and Western Siberia. The results show that leaf size and venation density depend on the geographic location of population, with these parameters in the two species changing in opposite directions along the transect. In its northern part (forest tundra-southern taiga), B. pubescens shows a positive correlation of leaf area with long-term-average air temperature, while this correlation in B. pendula is negative. In the southern part, correlations of leaf size with long-term average precipitation in the two species are also opposite in sign. Parameters of leaf shape in both species depend mainly on weather conditions in the current year rather than on long-term average climatic parameters. The conclusion is drawn that B. pendula and B. pubescens have different mechanisms of structural adaptation of leaves to climate and weather conditions that are based on changes in leaf size and shape.
    Keywords Betula pendula ; Betula pubescens ; climatic zones ; adaptation
    Language English
    Dates of publication 2010-07
    Size p. 293-301.
    Publisher SP MAIK Nauka/Interperiodica
    Publishing place Dordrecht
    Document type Article
    ZDB-ID 1179775-7
    ISSN 1608-3334 ; 1067-4136
    ISSN (online) 1608-3334
    ISSN 1067-4136
    DOI 10.1134/S106741361004003X
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  9. Article: Mediko-sotsial'nye aspekty adaptatsii voennosluzhashchikh.

    Makhnëv, M V / Makhnëv, A V

    Voenno-meditsinskii zhurnal

    2000  Volume 321, Issue 9, Page(s) 57–64, 96

    Abstract: The peculiarities of servicemen' adaptation at biological, psychological and social levels under peace-time conditions and during the fighting in Chechen Republic were studied with the help of clinical and physiological, psychophysiological and ... ...

    Title translation The medicosocial aspects of the adaptation of servicemen.
    Abstract The peculiarities of servicemen' adaptation at biological, psychological and social levels under peace-time conditions and during the fighting in Chechen Republic were studied with the help of clinical and physiological, psychophysiological and psychosociological methods. The method of integral qualitative and semi-quantitative assessment of human adaptation is described. It is shown that the main stage of adaptation in servicemen lasts not less than 1 year. However the complete adaptation of military men by the end of their service usually doesn't occur. The variants of adaptation course and perspective methods of its acceleration, character and causes of dysadaptive disorders in servicemen who participated in antiterrorist operations are discussed.
    MeSH term(s) Adaptation, Physiological ; Adaptation, Psychological ; Humans ; Male ; Military Personnel/psychology ; Military Personnel/statistics & numerical data ; Psychophysiology ; Russia ; Social Adjustment ; Time Factors ; Warfare
    Language Russian
    Publishing date 2000-09
    Publishing country Russia (Federation)
    Document type Comparative Study ; English Abstract ; Journal Article
    ZDB-ID 392041-0
    ISSN 0026-9050 ; 0300-9114
    ISSN 0026-9050 ; 0300-9114
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  10. Article: Size of the leaf as a marker of birch productivity at a distance from the climatic optimum

    Migalina, S. V / Ivanova, L. A / Makhnev, A. K

    Russian journal of plant physiology a comprehensive Russian journal on modern phytophysiology. 2009 Nov., v. 56, no. 6

    2009  

    Abstract: Morphometric parameters of mature leaves (area, venation density, and shape coefficient) and trunks (size and biomass) of two edificatory birch species, Betula pendula Roth and B. pubescens Ehrh., were characterized. These species inhabit a 1600-km ... ...

    Abstract Morphometric parameters of mature leaves (area, venation density, and shape coefficient) and trunks (size and biomass) of two edificatory birch species, Betula pendula Roth and B. pubescens Ehrh., were characterized. These species inhabit a 1600-km transect of the Urals, from forest-tundra to forest-steppe. In both species, the highest trunk biomass was observed in the subzone of south taiga. Trunk parameters and leaf sizes of B. pendula varied in a narrower range than in B. pubescens. As distinct from leaf shape, leaf size was correlated with the average multiyear climate characteristics but not with the weather during a given growth season. In B. pubescens, which range extends wide from its climatic optimum, leaf area was positively correlated with trunk biomass. In B. pendula, growing mainly within the area of its climatic optimum, such correlation was not observed. We concluded that such parameter as mature leaf size could be used for prediction of tree productivity growing outside of the zone of their climatic optimum.
    Keywords Betula pendula ; latitude
    Language English
    Dates of publication 2009-11
    Size p. 858-862.
    Publisher SP MAIK Nauka/Interperiodica
    Publishing place Dordrecht
    Document type Article
    ZDB-ID 1166808-8
    ISSN 1608-3407 ; 1070-3292 ; 1021-4437
    ISSN (online) 1608-3407
    ISSN 1070-3292 ; 1021-4437
    DOI 10.1134/S102144370906017X
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