scholarly journals Оnomastic Lexicography Within Linguistic-and-Ecological Approach

2019 ◽  
pp. 174-185
Author(s):  
Dmitriy Ilyin ◽  
Elena Sidorova
Keyword(s):  
Ecological Approach ◽  
Reference Book ◽  
Entry Zone ◽  
Dictionary Entry ◽  
Head Unit ◽  
Volgograd Region ◽  
Ecological Criteria ◽  
First Time ◽  
Derivatives Of

In the study linguistic-and-ecological approach is used for describing the reference book of regional toponyms The Names of Settlements in the Volgograd Region as a lexicographic issue. Dictionary entry zones are described and the most complex issues of their compilation are indicated. The authors have characterized the entry zone The Degree of Name Uniqueness within the Region, represented in the onomastic dictionaries for the first time. The four successive stages in oikonym uniqueness gradation have been identified, that enables making adjustments to the directories and reference books while nominating settlements. The zone of the dictionary entry Syntactic Characteristic of the Head Unit in Combination with the Appellative, the introduction of which is stipulated by the variability of such combinations in speech practice, contains information about case parallelism between the oikonym and the appellative, or its absence. The zone of the dictionary entry Ottoponymic Derivatives of the Vocabulary Unit reveals the possibility of forming relative adjectives and nouns naming the inhabitants of a particular locality. Dictionary entries in the reference book are drawn up taking into account the linguistic-and-ecological criteria developed by the authors for the toponymic names.

First record of the soil cyanobacterium Nodosilinea epilithica (Synechococcales, Cyanobacteria) in Russia

2016 ◽  
Vol 50 ◽  
pp. 125-141
Author(s):  
A. D. Temraleeva ◽  
S. A. Dronova
Keyword(s):  
Chestnut Soil ◽  
First Record ◽  
Molecular Analyses ◽  
Dry Steppes ◽  
Cyanobacterial Culture ◽  
Volgograd Region ◽  
First Time

Nodosilinea epilithica Perkerson et Casamatta is reported for the first time for Russia. The sample was isolated from a typical chestnut soil in the zone of dry steppes (Volgograd Region) and its identity was confirmed by morphological and molecular analyses. The specific feature of the studied strain is its ability to form nodules at normal (60–75 μmol photons ∙ m-2 ∙ sec-1) light. The number of nodules is supposed to be related to the age of a cyanobacterial culture.

Hemiflagellochloris (Chlorophyceae, Chlorophyta), a new for Russian flora genus of green algae

2014 ◽  
Vol 48 ◽  
pp. 104-113
Author(s):  
A. D. Temraleeva ◽  
E. V. Mincheva ◽  
Yu. S. Bukin ◽  
M. V. Eltsov ◽  
V. A. Demkin ◽  
...  
Keyword(s):  
Green Algae ◽  
Molecular Analysis ◽  
18S Rdna ◽  
Phylogenetic Position ◽  
Rdna Gene ◽  
Algal Strain ◽  
The North ◽  
Volgograd Region ◽  
First Time ◽  
18S Rdna Gene

The genus Hemiflagellochloris Watanabe et al. was found in Russia for the first time. The algal strain was isolated from a buried solonetz in the zone of dry steppes (the north-end of Ergeni Hills, Volgograd Region). The morphology and ecology of this isolate are described. Its phylogenetic position within Chlorophyceae is determined by molecular analysis of 18S rDNA gene.

scholarly journals Insight into the Secondary Metabolites of Geum urbanum L. and Geum rivale L. Seeds (Rosaceae)

Plants ◽  
2021 ◽  
Vol 10 (6) ◽  
pp. 1219
Author(s):  
Marek Bunse ◽  
Peter Lorenz ◽  
Florian C. Stintzing ◽  
Dietmar R. Kammerer
Keyword(s):  
Fatty Acids ◽  
Phenolic Compounds ◽  
Unsaturated Fatty Acids ◽  
Asiatic Acid ◽  
Cosmetic Products ◽  
Nutritional Properties ◽  
First Time ◽  
Derivatives Of ◽  
Geum Urbanum ◽  
Insight Into

The present study aimed at the identification and quantitation of phenolic compounds, fatty acids, and further characteristic substances in the seeds of Geum urbanum L. and Geum rivale L. For this purpose, individual components of extracts recovered with MeOH, CH2Cl2, and by cold-pressing, respectively, were characterized by HPLC-DAD/ESI-MSn and GC/MS and compared with reference compounds. For both Geum species, phenolic compounds, such as flavonoids and gallic acid derivatives, and triterpenes, such as saponins and their aglycones, were detected. Surprisingly, both Geum species revealed the presence of derivatives of the triterpenoid aglycons asiatic acid and madecassic acid, which were characterized for the first time in the genus Geum. Furthermore, the fatty acids of both species were characterized by GC–MS after derivatization. Both species showed a promising fatty-acid profile in terms of nutritional properties because of high proportions of unsaturated fatty acids. Linoleic acid and linolenic acid were most abundant, among other compounds such as palmitic acid and stearic acid. In summary, the present study demonstrates the seeds of G. urbanum and G. rivale to be a valuable source of unsaturated fatty acids and bioactive phenolics, which might be exploited for nutritional and cosmetic products and for phytotherapeutic purposes.

scholarly journals Identification of pigments in artworks by inverse tangent derivative of spectrum and a new filtering method

2020 ◽  
Vol 8 (1) ◽  
Author(s):  
F. Fazlali ◽  
S. Gorji Kandi
Keyword(s):  
Reflectance Spectrum ◽  
Practical Method ◽  
Chemical Methods ◽  
Munk Function ◽  
Absorption Of Light ◽  
Spectrophotometric Data ◽  
First Time ◽  
Non Destructive ◽  
Derivatives Of

Abstract Employing an economical and non-destructive method for identifying pigments utilized in artworks is a significant aspect for preserving their antiquity value. One of the non-destructive methods for this purpose is spectrophotometry, which is based on the selected absorption of light. Mathematical descriptive methods such as derivatives of the reflectance spectrum, the Kubelka–Munk function and logarithm have been employed for the characterization of the peak features corresponding to the spectrophotometric data. In the present study, the mentioned mathematical descriptive methods were investigated with the aim to characterize the constituents of an Iranian artwork but were not efficient for the samples. Therefore, inverse tangent derivative equation was developed on spectral data for the first time, providing considerable details in the profile of reflectance curves. In the next part, to have a simpler and more practical method it was suggested to use filters made up of pure pigments. By using these filters and placing them on the samples, imaging was done. Then, images of samples with and without filter were evaluated and pure pigments were distinguished. The mentioned methods were also used to identify pigments in a modern Iranian painting specimen. The results confirmed these methods with reliable answers indicating that physical methods (alongside chemical methods) can also be effective in determining the types of pigments.

Synthesis of Galactomannan Sulfate-Citrate

2022 ◽  
Vol 1049 ◽  
pp. 218-223
Author(s):  
Aleksandr S. Kazachenko ◽  
Yuriy N. Malyar ◽  
Anna S. Kazachenko
Keyword(s):  
Biological Activity ◽  
Ftir Spectroscopy ◽  
X Ray Diffraction ◽  
Absorption Bands ◽  
X Ray ◽  
Mixed Ester ◽  
First Time ◽  
Derivatives Of

Sulfated derivatives of polysaccharides have anticoagulant, hypolipedimic and other biological activity. In this work, a complex mixed ester of galactomannan, its sulfate-citrate, was obtained for the first time. The introduction of citrate and sulfate groups was proved by FTIR spectroscopy by the appearance of corresponding absorption bands. It was shown by X-ray diffraction that the introduction of the citrate group leads to the amorphization of the galactomannan structure.

scholarly journals Synthetic Derivatives of Natural Alkaloid Harmine

2016 ◽  
Vol 11 (3) ◽  
pp. 199
Author(s):  
N.M. Ismagulova ◽  
Zh.S. Nurmaganbetov ◽  
A.Zh. Turmukhambetov ◽  
T.S. Seitembetov ◽  
S.M. Adekenov
Keyword(s):  
Indole Alkaloid ◽  
Quaternary Ammonium Salts ◽  
Ammonium Salts ◽  
Peganum Harmala ◽  
Underground Part ◽  
X Ray ◽  
Natural Alkaloid ◽  
First Time ◽  
Synthetic Derivatives ◽  
Derivatives Of

The indole alkaloid harmine was extracted from underground part of <em>Peganum harmala L.</em> With the purpose of obtaining the new biological active derivatives on base of alkaloid harmine the chemical modification was carried out. The p-toluolsulfochlorid, p-toluolsulfoacid, hydrochloric, sulfuric, nitric acids, dioxide selenium and phthalic anhydride have been chosen as modifiers. For the first time quaternary ammonium salts, derivatives of N-oxide and N (2)-oxyharminiumphthalate harmine are synthesized. The structure of the synthesized compounds is determined by methods of the spectral analysis and X-ray analysis. Antimicrobic and phagocytosis stimulating activities of isolated alkaloids and their derivatives are investigated.

scholarly journals Benthos Algae Communities of Saline Rivers in the Lake Elton Basin: Taxonomic and Quantitative Structure

2021 ◽  
pp. 383-397
Author(s):  
O. G. Gorokhova ◽  
Т. D. Zinchenko
Keyword(s):  
Dominant Species ◽  
Structural Transformations ◽  
Hypersaline Lake ◽  
Quantitative Structure ◽  
Volgograd Region ◽  
Structure Of Communities ◽  
Saline Rivers ◽  
Critical Salinity ◽  
Lake Elton ◽  
First Time

For the first time, an assessment was given of the taxonomic and quantitative structure of the phytobenthos of seven saline rivers in the basin of the hypersaline lake Elton (Volgograd Region). Main types of algacenoses developing on substrates were revealed, namely: diatom phytobenthos, communities of diatoms with cyanoprokaryotes, cyanobacterial films and mats, and epiphyton. The phytobenthos consists of local, mosaic-distributed communities with a small similarity of their species composition. The algacenosis structure is determined by Bacillariophyta (with the predominance of species of the genus Navicula) and Cyanoprokaryota (of the genera Phormidium, Leptolyngbya, and Geitlerinema). The abundance and biomass values vary widely, reaching their highest values (109,834–417,472 mln cells/m2 and 523.6–567.6 g/m2 ) in cyanobacterial communities of mesohaline rivers with their salinity up to 16–19 g/L. Mineralization as a factor influencing the structure of communities, most rigidly acts in the estuarine sections of rivers, by controlling the composition of the dominant species. For critical salinity values (> 70 g/L), characteristic structural transformations of communities by the type of replacement of planktonic and benthic Bacillariophyta and Cyanoprokaryota by planktonic Chlorophyta (of the Dunaliella genus) and picoplankton were established.

The Intertext Circle of Verbal Culture: Statics and Dynamics. Book Review: Dyadechko, L.P. (2019) Slovar’ Krylatykh Slov i Vyrazheniy Nashego Vremeni [Dictionary of Winged Words and Expressions of Our Time]. Moscow: Slovari XXI veka

2021 ◽  
pp. 117-125
Author(s):  
Konstantin P. Sidorenko ◽  
Keyword(s):  
Teaching And Learning ◽  
Rich Source ◽  
Dictionary Entry ◽  
The Past ◽  
Statics And Dynamics ◽  
Source Study ◽  
Literature Culture ◽  
First Time

The dictionary contains over 1,300 winged words and expressions. They go back to the texts and speeches of our contemporaries, as well as to the works of the past that have become widespread. Many expressions are fixed in the dictionary for the first time. Detailed interpretations and examples of use from fiction, journalism, films show all the semantic nuances and stylistic features of winged phrases. Each dictionary entry contains rich source study and bibliographic material. For the first time in lexicographic practice, typical transformations of winged expressions in speech are determined and interpreted. The book is intended for those teaching and learning Russian, as well as for those interested in the issues of literature, culture, politics and their influence on our life.

scholarly journals Trends and Exceptions in the Interaction of Hydroxamic Acid Derivatives of Common Di- and Tripeptides with Some 3d and 4d Metal Ions in Aqueous Solution

Molecules ◽  
2019 ◽  
Vol 24 (21) ◽  
pp. 3941 ◽  
Author(s):  
Ozsváth ◽  
Bíró ◽  
Nagy ◽  
Buglyó ◽  
Sanna ◽  
...  
Keyword(s):  
Metal Ions ◽  
Hydroxamic Acid ◽  
Hydroxamic Acids ◽  
17O Nmr ◽  
Equilibrium Study ◽  
Sandwich Type ◽  
Uv Visible ◽  
First Time ◽  
Derivatives Of ◽  
Half Sandwich

By using various techniques (pH-potentiometry, UV-Visible spectrophotometry, 1H and 17O-NMR, EPR, ESI-MS), first time in the literature, solution equilibrium study has been performed on complexes of dipeptide and tripeptide hydroxamic acids—AlaAlaNHOH, AlaAlaN(Me)OH, AlaGlyGlyNHOH, and AlaGlyGlyN(Me)OH—with 4d metals: the essential Mo(VI) and two half-sandwich type cations, [(η6-p-cym)Ru(H2O)3]2+ as well as [(η5-Cp*)Rh(H2O)3]2+, the latter two having potential importance in cancer therapy. The tripeptide derivatives have also been studied with some biologically important 3d metals, such as Fe(III), Ni(II), Cu(II), and Zn(II), in order to compare these new results with the corresponding previously obtained ones on dipeptide hydroxamic acids. Based on the outcomes, the effects of the type of metal ions, the coordination number, the number and types of donor atoms, and their relative positions to each other on the complexation have been evaluated in the present work. We hope that these collected results might be used when a new peptide-based hydroxamic acid molecule is planned with some purpose, e.g. to develop a potential metalloenzyme inhibitor.

scholarly journals Suppression of Methane Generation during Methanogenesis by Chemically Modified Humic Compounds

Antioxidants ◽  
2020 ◽  
Vol 9 (11) ◽  
pp. 1140
Author(s):  
Elena Efremenko ◽  
Olga Senko ◽  
Nikolay Stepanov ◽  
Nikita Mareev ◽  
Alexander Volikov ◽  
...  
Keyword(s):  
Antioxidant Properties ◽  
Nutrient Media ◽  
Potassium Humate ◽  
Methane Generation ◽  
Chemically Modified ◽  
Humic Compounds ◽  
Negative Effect ◽  
The Media ◽  
First Time ◽  
Derivatives Of

The introduction of various concentrations of chemically modified humic compounds (HC) with different redox characteristics into the media with free and immobilized anaerobic consortia accumulating landfill gases was studied as approach to their functioning management. For this purpose, quinone (hydroquinone, naphthoquinone or methylhydroquinone) derivatives of HC were synthesized, which made it possible to vary the redox and antioxidant properties of HC as terminal electron acceptors in methanogenic systems. The highest acceptor properties were obtained with potassium humate modified by naphthoquinone. To control possible negative effect of HC on the cells of natural methanogenic consortia, different bioluminescent analytical methods were used. The addition of HC derivatives, enriched with quinonones, to nutrient media at concentrations above 1 g/L decreased the energetic status of cells and the efficiency of the methanogenesis. For the first time, the significant decrease in accumulation of biogas was reached as effect of synthetic HC derivatives, whereas both notable change of biogas composition towards increase in the CO2 content and decrease in CH4 were revealed. Thus, modification with quinones makes it possible to obtain low-potential HC derivatives with strongly pronounced acceptor properties, promising for inhibition of biogas synthesis by methanogenic communities.

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