Zobrazeno 1 - 10
of 25
pro vyhledávání: '"S. M. Ponomareva"'
Autor:
S. M. Ponomareva, L. A. Trilikauskas
Publikováno v:
Contemporary Problems of Ecology. 6:647-655
Investigations have been carried out in the area adjacent to Teletskoe Lake in the Altai Nature Reserve. Checklists of species for the studied habitats and their comparative analysis are given. Previous data on the fauna of spiders in the Altai Natur
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::657338b8f8d36412af2208fd19a8eeab
https://doi.org/10.1134/s1995425513060139
https://doi.org/10.1134/s1995425513060139
Autor:
S. E. Chernyshev, P. Yu. Malkov, A. V. Barkalov, Andrei A. Legalov, V. V. Dubatolov, S. M. Ponomareva, S. V. Chesnokov
Publikováno v:
Contemporary Problems of Ecology. 1:555-563
The major spatial changes in the communities of invertebrates in the grass cover of the Northeastern Altai and the factors determining these changes are revealed on the basis of multi-year accounts. The strength and general character of the connectio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::491a810cfc342451fc6c73bcfbc6d2e0
https://doi.org/10.1134/s199542550805007x
https://doi.org/10.1134/s199542550805007x
Publikováno v:
Prikladnaia biokhimiia i mikrobiologiia. 35(5)
A total of 52 species of medicinal plants capable of synthesizing phenolic compounds were subjected to mass-scale screening for 24 chemical elements. The screening was performed by atomic absorption spectrometry in combination with spectrophotometric
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::bd82328734f4c84cad8b3fb8a5f49050
https://pubmed.ncbi.nlm.nih.gov/10581640
https://pubmed.ncbi.nlm.nih.gov/10581640
Autor:
M Ia, Lovkova, G N, Buzuk, S M, Sokolova, N I, Kliment'eva, S M, Ponomareva, O V, Shelepova, I E, Vorotnitskaia
Publikováno v:
Izvestiia Akademii nauk. Seriia biologicheskaia. (5)
Mass screening of medicinal plants of the flora of Russia (196 species) was performed for chromium content. A total of 124 species-chromium concentrators were found, in which the chromium content markedly exceeded the mean values, this excess being 4
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::921d5f2de1c30e428cac0318ef3f08ef
https://pubmed.ncbi.nlm.nih.gov/9004896
https://pubmed.ncbi.nlm.nih.gov/9004896
Publikováno v:
Advances in experimental medicine and biology. 404
The pharmaceutical action of medicinal plants depends on the presence of natural compounds and biologically important microelements. The accumulation of some microelements in saponin-synthesizing plants, the small dispersion of their contents, and fi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::bb8e40533b8a552b64f47116b68a4bc5
https://pubmed.ncbi.nlm.nih.gov/8957286
https://pubmed.ncbi.nlm.nih.gov/8957286
Autor:
E. F. Shibanova, Lyudmila I. Larina, Tamara I. Vakul'skaya, R. A. Gavar, Ya. P. Stradyn, L. Kh. Baumane, S. M. Ponomareva, V. A. Lopyrev
Publikováno v:
Chemistry of Heterocyclic Compounds. 20:1021-1026
The electrochemical reduction of 2-substituted 5(6)-benzimidazoles has been studied with the aid of classical polarography and cyclic voltammetry in acetonitrile. The influence of the substituents in position 2 on the magnitudes of the half-wave pote
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a31bdcac41c0c05dd6a4ce01310311c8
https://doi.org/10.1007/bf00506400
https://doi.org/10.1007/bf00506400
Autor:
T. I. Yushmanova, G. V. Rassolova, E. N. Medvedeva, V. A. Lopyrev, T. V. Kasfaik, S. M. Ponomareva
Publikováno v:
Bulletin of the Academy of Sciences of the USSR Division of Chemical Science. 31:1965-1968
1. The NH acidity (pKa) of a series of carboxylic acid hydrazides and trifluoroacetamide in water was determined. 2. A linear dependence which correlated the pKa values of RCONHNH2 hydrazides with theσ* constants of the R substituents was found. The
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d9de731f220c4d2d657f6b48fea61c48
https://doi.org/10.1007/bf00950632
https://doi.org/10.1007/bf00950632
Publikováno v:
Chemistry of Heterocyclic Compounds. 19:997-1000
The NH acidities of a systematic series of 2-substituted benzimidazoles in acetonitrile were studied by potentiometric titration. It was found that the intramolecular interrelationships between the substituent in the 2 position and the acidity center
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::03ff84caca81683a4d7185e005814044
https://doi.org/10.1007/bf00506888
https://doi.org/10.1007/bf00506888
Autor:
E. S. Domnina, Nina N. Chipanina, Yu. L. Frolov, G. G. Skvortsova, N. A. Kazakova, V. I. Cherednichenko, S. M. Ponomareva
Publikováno v:
Journal of Applied Spectroscopy. 25:1387-1390
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dd7a3bc325ad0621fb83267b99d567ab
https://doi.org/10.1007/bf00610000
https://doi.org/10.1007/bf00610000
Autor:
S. M. Ponomareva, M. G. Voronkov, Nina N. Chipanina, G. G. Skvortsova, N. A. Kazakova, Yu. L. Frolov, T. V. Kashik, E. S. Domnina
Publikováno v:
Chemistry of Heterocyclic Compounds. 12:691-695
The thermodynamic parameters of the reaction of 1-vinyl- and 1-ethylazoles with phenol (K as,-ΔH, and -ΔS) were calculated for 1∶1 complexes with the aid of ER spectroscopy. The investigated compounds are arranged in the following order with resp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8b747cf10e3eaa29f9ca68e44c9bb13b
https://doi.org/10.1007/bf00742460
https://doi.org/10.1007/bf00742460