scholarly journals Structure of cenopopulations Clausia aprica (Stephan) Korn.-Tr. on the border of the area

2021 ◽  
Vol 38 ◽  
pp. 00043
Author(s):  
Valetina Ilyina ◽  
Tatjana Zenkina ◽  
Vadim Sagalaev ◽  
Stepan Senator ◽  
Anna Mitroshenkova ◽  
...  

The aim of this work was to identify and analyze the ontogenetic and spatial structure of steppe plant Clausia aprica (Stephan) Korn.-Tr. (Brassicaceae) cenopopulations at the border of distribution. The study of cenopopulations and their habitat conditions was conducted at 2006–2021 in Samara, Volgograd, and Orenburg Oblasts (Russian Federation). For the first time determined the polyvariance of development of individuals, the duration of ontogenetic stages and complete ontogenesis, peculiarities of spatial location and evaluation of running window methods. A table of prohibitions and resolutions of transitions between ontogenetic states was compiled for C. aprica ontogenesis. It was found that permissions of transitions between ontogenetic states are 37.8%. In natural cenopopulations, mutual transitions of individuals from one ontogenetic state to another has adaptive significance and determines the dynamics of the ontogenetic structure. At intervals of 6-8 years, a slight increase in the number of C. aprica individuals is observed in the populations, which is ensured by the efficiency of seed reproduction. Thus, self-maintenance and self-renewal of species populations is possible in case of low level of anthropogenic impact on vegetation cover of territories.

2019 ◽  
Vol 16 ◽  
pp. 00010
Author(s):  
Alexandra Guseva ◽  
Vera Cheryomushkina

Structure of coenopopulations and polyvariance of the development of species of the genus Scutellaria in Siberia were described. Species of the genus are semi-wood and grassy life forms. The formation of different life forms is confined to specific habitats. In a number of species (S. galericulata, S. grandiflora и S. supina), the life form is changing. Dimensional polyvariance of individuals of S. scordiifolia in different habitats was found. The ontogenetic structure of coenopopulations is diverse; 3 types of spectrum are formed: left-sided, centered, and right-hand. In individuals of S. supina and S. tuvensis, the duration of ontogenesis and the duration of individual ontogenetic conditions are influenced by living conditions. The polyvariance of selfmaintenance was revealed in S. supina, the transition from completely seed self-maintenance to mixed − seed reproduction in combination with vegetative. The spatial structure and density of coenopopulations vary depending on the habitat conditions. The spatial structure of the studied species is also determined by the peculiarities of self-maintenance of coenopopulations. The change in density is also associated with the mobility of the substrate on steep, rocky mountain slopes in vegetatively stationary species and with projective cover in vegetatively mobile ones.


2020 ◽  
Vol 18 (9) ◽  
pp. 1787-1798
Author(s):  
S.N. Ayusheeva

Subject. This article assesses the effectiveness of the existing system of environmental management based on the user-pays principle in terms of reducing the negative impact on the environment. Objectives. The article aims to conduct a comparative analysis of the anthropogenic impact on natural environment components and deficiency payments for pollution in the model areas of the Russian Federation. Methods. For the study, I used the methods of computational, comparative, systems, and structural analyses. Results. Based on the ecological rating of the Russian Federation subjects, the article defines model areas, assesses the degree of anthropogenic impact on the basis of pollution relative rates, and describes the particularities of environmental investment in the selected areas. Conclusions. The system of payments for pollution does not affect the economic behavior of economic entities.


2018 ◽  
Vol 52 (1) ◽  
pp. 101-121 ◽  
Author(s):  
V. M. Kotkova

The paper provides the data on aphyllophoroid fungi of the State Nature Reserve «Kurgalsky» situated in the Kingisepp District of the Leningrad Region. The list includes 285 species annotated by data on their habitats, substrates and frequency. In total 25 species protected in the Leningrad Region and 3 species protected in Russian Federation were found in the protected area. Chaetodermella luna, Phlebia subochracea and Trechispora stevensonii are published for the first time for the Leningrad Region. The specimens of selected species are kept in the Mycological Herbarium of the Komarov Botanical Institute RAS (LE).


2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Jianyu Wang ◽  
Doudou Liu ◽  
Zhiwei Sun ◽  
Ting Ye ◽  
Jingyuan Li ◽  
...  

AbstractIt has been postulated that cancer stem cells (CSCs) are involved in all aspects of human cancer, although the mechanisms governing the regulation of CSC self-renewal in the cancer state remain poorly defined. In the literature, both the pro- and anti-oncogenic activities of autophagy have been demonstrated and are context-dependent. Mounting evidence has shown augmentation of CSC stemness by autophagy, yet mechanistic characterization and understanding are lacking. In the present study, by generating stable human lung CSC cell lines with the wild-type TP53 (A549), as well as cell lines in which TP53 was deleted (H1229), we show, for the first time, that autophagy augments the stemness of lung CSCs by degrading ubiquitinated p53. Furthermore, Zeb1 is required for TP53 regulation of CSC self-renewal. Moreover, TCGA data mining and analysis show that Atg5 and Zeb1 are poor prognostic markers of lung cancer. In summary, this study has elucidated a new CSC-based mechanism underlying the oncogenic activity of autophagy and the tumor suppressor activity of p53 in cancer, i.e., CSCs can exploit the autophagy-p53-Zeb1 axis for self-renewal, oncogenesis, and progression.


2020 ◽  
Vol 97 (1) ◽  
pp. 55-61
Author(s):  
S. Yu. Vodyanitskаyа ◽  
O. V. Sergienko ◽  
N. G. Ivanova ◽  
V. V. Balachnova ◽  
I. V. Arkhangelskаya ◽  
...  

Relevance. In September, 2017 the International Convention on Control of Ships’ Ballast Waters and sediments, in which the Russian Federation takes part, came into effect.Aim of article is to cover the results of implementation of the Convention in Russia, regarding selection and analysis of ballast waters tests for compliance with the international standard.Material and methods. The materials for work were data on ship arrivals at the international seaports of the Russian Federation, provided by sanitary and quarantine departments of the Russian ports, and monitoring researches of ballast waters in seaports of some regions of the Russian Federation. Analytical, bacteriological, molecular methods were applied.Results. The studies of ballast waters in the Leningrad and Kaliningrad regions have been conducted for the first time in 2018, and in the Rostov region the study lasts since 2010. The laboratory researches of ships’ ballast showed that E. coli, Enterococcus spp. were in norm, V. cholerae O1 and O139 in ballast were absent. 12 of 21 ballast water tests investigated by specialists of the Rostov region laboratories contained V. cholerae non-O1/non-O139, ballast was taken on the ships which arrived from Romania and Turkey.Сonclusion. The results of the molecular and genetic researches suggest that there is a probability of V. сholeraе introduction brougth with ship ballast. Management decisions are demanded to ensure biological safety of shipping and to decrease intestinal infections incidence in residents of the seaside cities.


2014 ◽  
Vol 19 (2) ◽  
pp. 20-25
Author(s):  
A. M. Butenko ◽  
A. A. Kozlova ◽  
V. F. Larichev ◽  
T. K. Dzagurova ◽  
R. A Pantykhova ◽  
...  

As a result of serological testing (MAC-ELISA, ELISA-IgG and neutralization test) 143 sera from 132 patients with acute febrile disease of unknown etiology hospitalized in summer 2012 in the hospitals of Tula, the first time in Tula and the Tula region were diagnosed 4 cases of West Nile fever. The age ofpatients was 42, 60, 62 and 64. They all got sick in August 2012. The temperature reached 39-40°C. Duration of disease from 13 to 20 days, the duration of hospitalization from 8 to17 days. Neurological symptoms were observed in two patients in the form of meningeal syndrome and encephalopathy with asthenic symptoms (in one case) and faint meningeal syndrome (in another).


2020 ◽  
Author(s):  
A.Ya. Kapustin ◽  
I.I. Kucherov ◽  
S.A. Sinitsyn ◽  
A.I. Kovler ◽  
Yu.N. Kashevarova

Modern constitutional transformations, asserting a “value” legal understanding, actualize theoretical and practical problems of legislative regulation, serve as a prereq- uisite for rethinking the essence, role and significance of law in the life of society, and determine the formulation of a number of issues related, first of all, to the qualitative implementation of novelties. This collection reflects the diversity and depth of scientific discussions of the XV In- ternational school of young legal scholars on the topic “Constitution and modernization of legislation”, which was held by the Institute of legislation and comparative law under the Government of the Russian Federation in cooperation with the International Union of lawyers. In the context of a difficult epidemiological situation related to the spread of corona- virus infection, in order to protect the health of conference participants, the organizing Committee decided to hold the XV School remotely (by correspondence). For the first time, all its scientific events were held online. The participants had a unique opportunity to communicate with the direct developers of amendments to the Constitution of the Russian Federation, present their reports in a new format.


2021 ◽  
Vol 213 (10) ◽  
pp. 31-39
Author(s):  
L. Ignat'eva ◽  
A. Sermyagin

Abstract. The purpose of the research was to assess the duration of the length of productive life of Simmental cows. Methods. The research was carried out on Simmental cows bred in 14 regions of the Russian Federation, the total livestock was 8 832 heads. The calculation of the heritability coefficients and correlation (genetic and paratypic) was carried out by using the programs RENUMF90 and REMLF90. Results. A fairly strong relationship was established between the duration of a productive life (months) and the age of culling (lactations) r = +0.795, the length of productive life (months) and lifetime productivity within the range of +0.669…+0.714. However, the relationship between the age of culling (lactations) and lifetime productivity is moderate, from +0.261 to +0.316. A moderate negative relationship was obtained between the age of culling (lactations) and milk yield per first lactation from –0.472 to –0.486. The average relationship was found between milk yield per first lactation and lifetime productivity from +0.567 to +0.588. Cows of the Altai Territory (3.08 lactations or 61.6 months), the Republic of Mordovia (3.38 lactations or 62.4 months) and the Lipetsk region (3.40 lactations or 65.7 months) were distinguished by low age of culling. While the greatest length of productive life was noted in animals and Bryansk (5.48 lactations or 86.9 months) and Irkutsk regions (4.57 lactations or 77.1 months). Bryansk (23 630 kg of milk), Tyumen (18 156 kg) and Irkutsk (17 751 kg) regions occupied the leading positions in lifetime productivity of cows in the sample, while the outsiders were the regions of traditional cattle breeding - Altai Territory (12658 kg of milk), the Republic of Bashkiria (12 482 kg). Scientific novelty. For the population Simmental cattle of the Russian Federation, for the first time, an assessment of selection and genetic parameters of lifelong productivity and length of productive life of Simmental cows was carried out, depending on the breeding region.


Author(s):  
Ivan Zykin

In the period of New Economic Policy in the USSR industrialization issues became very topical. In timber industry complex, the solutions were related to the development of forested areas in Northeastern regions of the country as well as to the construction and reconstruction of enterprises. The article provides the first-time analysis of maps and forest industry location, based on the results of the First Five-Year Plan published in the atlas “The Industry in the USSR and the beginning of the Second Five-Year Plan“ and statistical collection materials ”Social Construction of the USSR”. The analysis was made in order to define the situation in the industry, the main directions of production as well as the regional specificities. Using the example of wood machining sphere the author presents the analysis of enterprise groups according to different criteria. The research resulted in conclusions about highest intensity of enterprise reconstruction and construction in timber sawing, in furniture industry and intra-sectoral combination. In timber industry, the majority of enterprises were small and middle companies, which greatly contributed to its development. Regional specificities of timber industry location included concentration of main facilities in northwestern, western and central parts of the country, in the Volga region and in Ural. However only several regions had developed wood machining and deep processing spheres, such as Leningrad oblast, the Gorky Krai, Belarusian and the Ukrainian Soviet Republics.


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