219 Result(s)
within
D. Y. **e
Life Sciences
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Article
Long-Chain Alkenones in Sediments of Lake Utichye-3 (Southern Siberia, Khakassia) as a Paleo-Indicator of Climate Change
Long-chain alkenones are produced exclusively by certain species of microalgae Isochrysidales of the order of haptophytes (Haptophyta). These are polyunsaturated methyl and ethyl ketones C35–C42 with 2–4 trans...
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Article
Stanols in the Sediments of Lake Shira (Southern Siberia) as an Indicator of Fecal Influx into the Lake in the Late Holocene
The study of fecal compounds in lake sediments is one of the newest trends in paleolimnology. Some stanols are produced by the intestinal microflora of animals from sterols found in food. Once in water bodies,...
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Article
Interaction of Mesenchymal Stromal Cells with 5XFAD Mouse Hippocampal Cells in Primary Culture Depending on Cocultivation Method
We studied the mutual influence of multipotent mesenchymal stromal cells (MMSC) isolated from human umbilical cord Wharton’s jelly and primary culture of hippocampal cell from transgenic (Tg) 5XFAD mice, a mod...
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Article
Feeding Ecology of Red Seabream, Pagrus major (Sparidae) in the Korea Strait
The feeding ecology of red seabream, Pagrus major was studied using 1046 specimens collected by danish seine and bottom trawl from January to December 2018 in the Korea Strait. The size of the individuals ranged ...
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Article
Diatom Complexes in Modern Bottom Sediments of Lakes of the Central Tunguska Plateau, Evenkia
Diatom complexes in the upper layer of bottom sediments in freshwater lakes Cheko and Zapovednoe located in the taiga zone of southern Evenkia in the Tungusskii State Reserve have been investigated for the fir...
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Article
Open AccessCorrelation between retinal vein pulse amplitude, estimated intracranial pressure, and postural change
Spaceflight associated neuro-ocular syndrome (SANS) is common amongst astronauts on long duration space missions and is associated with signs consistent with elevated cerebrospinal fluid (CSF) pressure. Additi...
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Article
The Bacteria Titer Changes and Expression Analysis of Related Genes in SA and JA Signaling Pathway from Mandarin ‘Shatangju’ Infected by Candidatus Liberibacter Asiaticus
Citrus Huanglongbing (HLB) is a highly destructive disease, and exclusively associated with Candidatus Liberibacter asiaticus (CLas). In this study, the CLas bacterial titers, important enzymes activities and exp...
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Article
Archil K. Dondua (1929–2021)
Professor of St. Petersburg State University Archil K. Dondua (1929–2021) is known for his pioneering work in the developmental biology of annelids and vertebrates, the kinetics of cell populations in ontogene...
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Article
Macroparticle Charcoal in Lake Sediments of the Central Tunguska Plateau (Siberia, Evenkia) as an Indicator of Forest Fires and a Possible Trace of the Tunguska Event of 1908
The distribution of >100-µm charcoal particles, which may be traces of forest fires in the surrounding area, has been analyzed in the bottom sediments of lakes Cheko and Zapovednoe in the south of the Evenk di...
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Article
The First Discovery of Trematodes (Digenea) in the Deep-Sea Acorn Worms Torquaratoridae (Hemichordata, Enteropneusta)
Trematodes found in the enteropneust hemichordates are described for the first time. Metacercariae have been found in the trunk coelom, in the collar coelom, in the proboscis coelom, and in the glomerulus of t...
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Article
Haemostasis and Thrombosis. Spatial Organization of the Biochemical Processes at Microscale
Blood coagulation and fibrinolysis systems are enzymatic cascades in blood plasma that control formation and dissolution of a fibrin clot, respectively. However, critical processes in both systems occur on spe...
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Article
Feasibility of using convolutional neural networks for individual-identification of wild Asian elephants
Individual identification is a basic requirement for research in behavior, ecology and conservation. Photographic records are commonly used in situations where individuals are visually distinct. However, keepi...
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Article
The Role of Immobilized Phospholipids in the Initiation of Blood Coagulation under Flow Conditions
Localized thrombin production appears to be a key event in the hemostatic response to the vascular injury. This protein causes irreversible activation of platelets and is responsible for the formation of a fib...
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Green Synthesized Bimetallic Nanomaterials for Bioenergy Applications
A novel class of materials, “bimetallic nanoparticles” (BNPs), for catalysis have intensively investigated by integrating two different metals, which offer synergistic or novel features surpassing that of mono...
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Article
Cell Therapy as a Way to Correct Impaired Neurogenesis in the Adult Brain in a Model of Alzheimer’s Disease
This work is based on the hypothesis of an impairment in neurogenesis during aging, which may be one of the causes of neurodegenerative diseases, including Alzheimer’s disease (AD). Uncompensated neuronal deat...
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Article
Microbial Utilization of Glycine Betain in Hypersaline Soda Lakes
Glycine betaine (GB) is a biologically important compound for microbial communities living in saline habitats most commonly employed as an organic osmolyte. At fluctuating salinity, halophilic microbes produci...
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Article
Methodological Considerations for Lipid and Polar Component Analyses in Human Skin Stratum Corneum
Collection of skin very top layer, called stratum corneum, by tape strip** and the analysis of stratum corneum components by mass spectrometry provides multiple advantages for clinical studies that aim to under...
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Article
Open AccessMolecular Beacon DNA Probes with Fluorescein Bifluorophore
An azido-derivative of a fluorescein bifluorophore was obtained and used for the synthesis of “molecular beacon”-type oligonucleotide fluorogenic probes for RT-PCR. Eight probe variants were synthesized based ...
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Article
Molecular Cloning and Abiotic Stress Expression Analysis of GTPase Era Gene in Mulberry (Morus alba L.)
Escherichia coli Ras-like protein (Era) forms a special GTPase family, which functions in the regulation of the cell cycle by coupling cell division with the growth rate. A cDNA sequence coding GTPase Era mRNA ha...
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Article
Long-Chain Alkenones in Saline Meromictic Lakes of the North Minusinsk Depression (Southern Siberia): First Knowledge and Possible Correlation with Water-Level Dynamics
Long-chain alkenones (LCAs)—lipides produced by some microalgae of the Haptophyta group in seas and continental water bodies—are promising paleomarkers of climate changes because they are well-preserved in bot...
