31 research outputs found
The limit of mass determination with an AFM cantilever-based system
This study was performed in the framework of the Program for Basic Research of State Academies of Sciences for 2013-2020. Shumov I.D. is a recipient of Russian Federation President scholarship for young scientists for 2016-2018 (project identificator SP-4280.2016.4)
Magnetron sputtering deposition of ultra-thin tungsten coatings onto amorphous graphite for enhancement of horseradish peroxidase adsorption
The present study was performed in the framework of the Program for Basic Research of State Academies of Sciences for 2013-2020
ΠΠΎΡΡΠ΅ΠΊΡΠΈΡ ΠΌΠΈΠΊΡΠΎΠ±ΠΈΠΎΡΠ΅Π½ΠΎΠ·Π°, ΡΠΈΠ·ΠΈΠΎΠ»ΠΎΠ³ΠΈΡΠ΅ΡΠΊΠΈΡ ΠΏΡΠΎΡΠ΅ΡΡΠΎΠ² ΠΎΡΠ³Π°Π½ΠΈΠ·ΠΌΠ° ΠΏΠΎΡΠΎΡΡΡ ΠΏΡΠΈ ΠΈΠ½ΡΠ΅Π½ΡΠΈΠ²Π½ΠΎΠΉ ΡΠ΅Ρ Π½ΠΎΠ»ΠΎΠ³ΠΈΠΈ Π²ΡΡΠ°ΡΠΈΠ²Π°Π½ΠΈΡ
The authors presented the results of a study of the feed additiveβs effect on the gastrointestinal tractβs microflora, hematological, biochemical, and production indicators of piglets of the technological group 0-1 month of the Large White breed, Landrace, and Duroc. For the experiment, the authors formed two groups of animals - experimental and control. Piglets of the experimental group were fed with Bimulak Pre feed additive from the 2nd to the 15th day of life. Animals of the experimental group were on the usual diet and did not receive the feed additive. As a result of studies, a positive effect of feed additive Bimulak Pre on enterobiocenosis of the gastrointestinal tract of piglets, hematological and biochemical parameters of blood, and production performance. After the application, the feed additive helps increase the amount of beneficial microflora (bifidobacteria and lactobacilli) while reducing lactose-negative variants of Escherichia coli, staphylococci, and yeast-like fungi of the genus Candida in the intestine. Using the analysis of hematological and biochemical parameters, the authors found that the number of erythrocytes and hemoglobin slightly increased in the experimental group of piglets. In addition, the total number of incremental cytes decreases, the total protein content increases, and the glucose level decrease compared to the check. The use of the additive with the essential diet leads to a reduction in the mortality of piglets, increased preservation of young stock, and an increase in average daily live weight gain and average weight at weaning.ΠΡΠ΅Π΄ΡΡΠ°Π²Π»Π΅Π½Ρ ΡΠ΅Π·ΡΠ»ΡΡΠ°ΡΡ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΡ Π²Π»ΠΈΡΠ½ΠΈΡ ΠΊΠΎΡΠΌΠΎΠ²ΠΎΠΉ Π΄ΠΎΠ±Π°Π²ΠΊΠΈ Π½Π° ΠΌΠΈΠΊΡΠΎΡΠ»ΠΎΡΡ ΠΆΠ΅Π»ΡΠ΄ΠΎΡΠ½ΠΎ-ΠΊΠΈΡΠ΅ΡΠ½ΠΎΠ³ΠΎ ΡΡΠ°ΠΊΡΠ°, Π³Π΅ΠΌΠ°ΡΠΎΠ»ΠΎΠ³ΠΈΡΠ΅ΡΠΊΠΈΠ΅, Π±ΠΈΠΎΡ
ΠΈΠΌΠΈΡΠ΅ΡΠΊΠΈΠ΅ ΠΈ ΠΏΡΠΎΠΈΠ·Π²ΠΎΠ΄ΡΡΠ²Π΅Π½Π½ΡΠ΅ ΠΏΠΎΠΊΠ°Π·Π°ΡΠ΅Π»ΠΈ ΠΏΠΎΡΠΎΡΡΡ ΡΠ΅Ρ
Π½ΠΎΠ»ΠΎΠ³ΠΈΡΠ΅ΡΠΊΠΎΠΉ Π³ΡΡΠΏΠΏΡ 0β1 ΠΌΠ΅ΡΡΡ ΠΊΡΡΠΏΠ½ΠΎΠΉ Π±Π΅Π»ΠΎΠΉ ΠΏΠΎΡΠΎΠ΄Ρ, Π»Π°Π½Π΄ΡΠ°Ρ ΠΈ Π΄ΡΡΠΎΠΊ. ΠΠ»Ρ ΠΏΡΠΎΠ²Π΅Π΄Π΅Π½ΠΈΡ ΡΠΊΡΠΏΠ΅ΡΠΈΠΌΠ΅Π½ΡΠ° Π±ΡΠ»ΠΈ ΡΡΠΎΡΠΌΠΈΡΠΎΠ²Π°Π½Ρ Π΄Π²Π΅ Π³ΡΡΠΏΠΏΡ ΠΆΠΈΠ²ΠΎΡΠ½ΡΡ
β ΠΎΠΏΡΡΠ½Π°Ρ ΠΈ ΠΊΠΎΠ½ΡΡΠΎΠ»ΡΠ½Π°Ρ. ΠΠΎΡΠΎΡΡΡΠ°ΠΌ ΠΎΠΏΡΡΠ½ΠΎΠΉ Π³ΡΡΠΏΠΏΡ Π² ΡΠ°ΡΠΈΠΎΠ½ Π²Π²ΠΎΠ΄ΠΈΠ»ΠΈ ΠΊΠΎΡΠΌΠΎΠ²ΡΡ Π΄ΠΎΠ±Π°Π²ΠΊΡ ΠΠΈΠΌΡΠ»Π°ΠΊ ΠΡΠ΅ ΡΠΎ 2-Π³ΠΎ ΠΏΠΎ 15-ΠΉ Π΄Π΅Π½Ρ ΠΆΠΈΠ·Π½ΠΈ. ΠΠΈΠ²ΠΎΡΠ½ΡΠ΅ ΠΎΠΏΡΡΠ½ΠΎΠΉ Π³ΡΡΠΏΠΏΡ Π½Π°Ρ
ΠΎΠ΄ΠΈΠ»ΠΈΡΡ Π½Π° ΠΎΠ±ΡΡΠ½ΠΎΠΌ ΡΠ°ΡΠΈΠΎΠ½Π΅ ΠΈ ΠΊΠΎΡΠΌΠΎΠ²ΡΡ Π΄ΠΎΠ±Π°Π²ΠΊΡ Π½Π΅ ΠΏΠΎΠ»ΡΡΠ°Π»ΠΈ. Π ΡΠ΅Π·ΡΠ»ΡΡΠ°ΡΠ΅ ΠΏΡΠΎΠ²Π΅Π΄Π΅Π½Π½ΡΡ
ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΠΉ ΡΡΡΠ°Π½ΠΎΠ²Π»Π΅Π½ΠΎ ΠΏΠΎΠ»ΠΎΠΆΠΈΡΠ΅Π»ΡΠ½ΠΎΠ΅ Π²Π»ΠΈΡΠ½ΠΈΠ΅ ΠΊΠΎΡΠΌΠΎΠ²ΠΎΠΉ Π΄ΠΎΠ±Π°Π²ΠΊΠΈ ΠΠΈΠΌΡΠ»Π°ΠΊ ΠΡΠ΅ Π½Π° ΡΠ½ΡΠ΅ΡΠΎΠ±ΠΈΠΎΡΠ΅Π½ΠΎΠ· ΠΆΠ΅Π»ΡΠ΄ΠΎΡΠ½ΠΎ-ΠΊΠΈΡΠ΅ΡΠ½ΠΎΠ³ΠΎ ΡΡΠ°ΠΊΡΠ° ΠΏΠΎΡΠΎΡΡΡ, Π³Π΅ΠΌΠ°ΡΠΎΠ»ΠΎΠ³ΠΈΡΠ΅ΡΠΊΠΈΠ΅ ΠΈ Π±ΠΈΠΎΡ
ΠΈΠΌΠΈΡΠ΅ΡΠΊΠΈΠ΅ ΠΏΠΎΠΊΠ°Π·Π°ΡΠ΅Π»ΠΈ ΠΊΡΠΎΠ²ΠΈ, Π° ΡΠ°ΠΊΠΆΠ΅ ΠΏΡΠΎΠΈΠ·Π²ΠΎΠ΄ΡΡΠ²Π΅Π½Π½ΡΠ΅ ΠΏΠΎΠΊΠ°Π·Π°ΡΠ΅Π»ΠΈ. ΠΠΎΡΠΌΠΎΠ²Π°Ρ Π΄ΠΎΠ±Π°Π²ΠΊΠ°, ΠΏΠΎΡΠ»Π΅ ΠΊΡΡΡΠ° ΠΏΡΠΈΠΌΠ΅Π½Π΅Π½ΠΈΡ, ΡΠΏΠΎΡΠΎΠ±ΡΡΠ²ΡΠ΅Ρ ΡΠ²Π΅Π»ΠΈΡΠ΅Π½ΠΈΡ ΠΊΠΎΠ»ΠΈΡΠ΅ΡΡΠ²Π° ΠΏΠΎΠ»Π΅Π·Π½ΠΎΠΉ ΠΌΠΈΠΊΡΠΎΡΠ»ΠΎΡΡ (Π±ΠΈΡΠΈΠ΄ΠΎ- ΠΈ Π»Π°ΠΊΡΠΎΠ±Π°ΠΊΡΠ΅ΡΠΈΠΉ) ΠΏΡΠΈ ΠΎΠ΄Π½ΠΎΠ²ΡΠ΅ΠΌΠ΅Π½Π½ΠΎΠΌ ΡΠΌΠ΅Π½ΡΡΠ΅Π½ΠΈΠΈ Π»Π°ΠΊΡΠΎΠ·ΠΎΠ½Π΅Π³Π°ΡΠΈΠ²Π½ΡΡ
Π²Π°ΡΠΈΠ°Π½ΡΠΎΠ² ΠΊΠΈΡΠ΅ΡΠ½ΠΎΠΉ ΠΏΠ°Π»ΠΎΡΠΊΠΈ, ΡΡΠ°ΡΠΈΠ»ΠΎΠΊΠΎΠΊΠΊΠΎΠ² ΠΈ Π΄ΡΠΎΠΆΠΆΠ΅ΠΏΠΎΠ΄ΠΎΠ±Π½ΡΡ
Π³ΡΠΈΠ±ΠΎΠ² ΡΠΎΠ΄Π° Candida Π² ΠΊΠΈΡΠ΅ΡΠ½ΠΈΠΊΠ΅. ΠΠ½Π°Π»ΠΈΠ· Π³Π΅ΠΌΠ°ΡΠΎΠ»ΠΎΠ³ΠΈΡΠ΅ΡΠΊΠΈΡ
ΠΈ Π±ΠΈΠΎΡ
ΠΈΠΌΠΈΡΠ΅ΡΠΊΠΈΡ
ΠΏΠΎΠΊΠ°Π·Π°ΡΠ΅Π»Π΅ΠΉ ΠΏΠΎΠΊΠ°Π·Π°Π», ΡΡΠΎ Π² ΠΎΠΏΡΡΠ½ΠΎΠΉ Π³ΡΡΠΏΠΏΠ΅ ΠΏΠΎΡΠΎΡΡΡ Π½Π΅Π·Π½Π°ΡΠΈΡΠ΅Π»ΡΠ½ΠΎ ΡΠ²Π΅Π»ΠΈΡΠΈΠ²Π°Π΅ΡΡΡ ΠΊΠΎΠ»ΠΈΡΠ΅ΡΡΠ²ΠΎ ΡΡΠΈΡΡΠΎΡΠΈΡΠΎΠ² ΠΈ Π³Π΅ΠΌΠΎΠ³Π»ΠΎΠ±ΠΈΠ½Π°, ΡΠ½ΠΈΠΆΠ°Π΅ΡΡΡ ΠΊΠΎΠ»ΠΈΡΠ΅ΡΡΠ²ΠΎ Π»Π΅ΠΉΠΊΠΎΡΠΈΡΠΎΠ², Π²ΠΎΠ·ΡΠ°ΡΡΠ°Π΅Ρ ΡΠΎΠ΄Π΅ΡΠΆΠ°Π½ΠΈΠ΅ ΠΎΠ±ΡΠ΅Π³ΠΎ Π±Π΅Π»ΠΊΠ° ΠΈ ΡΠΌΠ΅Π½ΡΡΠ°Π΅ΡΡΡ ΡΡΠΎΠ²Π΅Π½Ρ Π³Π»ΡΠΊΠΎΠ·Ρ ΠΏΠΎ ΡΡΠ°Π²Π½Π΅Π½ΠΈΡ Ρ ΠΊΠΎΠ½ΡΡΠΎΠ»Π΅ΠΌ. ΠΡΠΈΠΌΠ΅Π½Π΅Π½ΠΈΠ΅ Π΄ΠΎΠ±Π°Π²ΠΊΠΈ Π²ΠΌΠ΅ΡΡΠ΅ Ρ ΠΎΡΠ½ΠΎΠ²Π½ΡΠΌ ΡΠ°ΡΠΈΠΎΠ½ΠΎΠΌ ΠΏΡΠΈΠ²ΠΎΠ΄ΠΈΡ ΠΊ ΡΠ½ΠΈΠΆΠ΅Π½ΠΈΡ ΠΏΠ°Π΄Π΅ΠΆΠ° ΠΏΠΎΡΠΎΡΡΡ, ΠΏΠΎΠ²ΡΡΠ΅Π½ΠΈΡ ΡΠΎΡ
ΡΠ°Π½Π½ΠΎΡΡΠΈ ΠΏΠΎΠ³ΠΎΠ»ΠΎΠ²ΡΡ ΠΌΠΎΠ»ΠΎΠ΄Π½ΡΠΊΠ°, ΡΠ²Π΅Π»ΠΈΡΠ΅Π½ΠΈΡ ΡΡΠ΅Π΄Π½Π΅ΡΡΡΠΎΡΠ½ΠΎΠ³ΠΎ ΠΏΡΠΈΡΠΎΡΡΠ° ΠΆΠΈΠ²ΠΎΠΉ ΠΌΠ°ΡΡΡ ΠΈ ΡΡΠ΅Π΄Π½Π΅ΠΉ ΠΌΠ°ΡΡΡ ΠΏΡΠΈ ΠΎΡΡΠ΅ΠΌΠ΅
VIRUSES OF NEPOVIRUS GENUS (PICORNAVIRALES, SECOVIRIDAE) IN THE SOUTH OF THE FAR EAST: RESULTS OF LONGITUDINAL MONITORING
Abstract. The aim of the presented work consists in the analysis of results of long-term monitoring of the members of one of the most important and interesting phytovirus taxons β genus Nepovirus (Picornavirales, Secoviridae, Comovirinae) β which is carried out since 1962 on the planned basis in the south of the Far East (Primorsky krai, Khabarovsk krai, the Sakhalin region) by the Laboratory of Virology of Federal Scientific Center of the East Asia terrestrial biodiversity of Far Eastern Branch of Russian Academy of Sciences (Vladivostok, Russia). Discussion. Many (it is possible β all) nepoviruses are capable to cause epiphytoties with significant economic damage for world economy. In the current article the organization of nepovirus genome, the principles of their division into three genetic groups (A, B, and C), virion morphology, the principles of division into three beyond density fractions (T, M, and B), the characteristics of phytopathology connected with nepoviruses, their ecology in the south of the Far East (including sources of isolation and vectors) are discussed as well as physical-chemical properties of some the most interesting strains from this region which apparently could represent new species of Nepovirus genus: Phryma asiatica mosaic virus (PhAMV); dayflower mosaic virus (DFMV); foenugreek necrotic spot virus (FoNSV); Capsicum annuum necrotic spot virus (CaNSV). Conclusion. Nepovirus genus is one of the most adapted for circulation in the phytocenoses of midlatitudes having natural reservoir among wild plants and pose serious threat for crops. On the basis of ecological features of nepoviruses the scientifically based list of preventive and protective actions against epiphytoties with nepovirus nature is provided. One of the most important elements of such actions is their planned monitoring at the regional level with obligatory comparison of the received results to universal data
Virus Diseases of Vegetable and Melon Crops in the South of the Russian Far East
Aim. The development of an inventory of phytoviruses affecting vegetable and melon crops in the South of the Russian Far East.Discussion. On the basis of many years of original research, carried out on a regular basis by the Laboratory of Virology (Federal Scientific Centre of East Asia Biodiversity, Far Eastern Branch, Russian Academy of Sciences) since 1962 as well as available data in the literature, information about the symptoms of diseases, circulation, reserve plants and vectors are presented for the alfalfa mosaic virus (Bromoviridae, Alfamovirus); tomato aspermy virus and cucumber mosaic virus (Bromoviridae, Cucumovirus); cauliflower mosaic virus (Caulimoviridae, Caulimovirus); garlic mosaic virus (Potyviridae, Carlavirus); tobacco etch virus, allium yellow dwarf virus, bean yellow mosaic virus, watermelon mosaic virus 2, turnip mosaic virus and bean common mosaic virus (Potyviridae, Potyvirus); radish mosaic virus (Picornavirales, Secoviridae, Comovirus); tobacco ringspot virus (Picornavirales, Secoviridae, Nepo-virus); cucumber green mottle mosaic virus, tobacco mosaic virus and tomato mosaic virus (Virgaviridae, Tobamovirus).Conclusion. The information presented forms the basis for the development of a set of diagnostic test systems for phytovirus diseases of vegetable and melon crops; a necessary element of activities directed to the improvement of food productivity and security of the Russian Federation in the Far East
Bacillus-Based Probiotic Treatment Modified Bacteriobiome Diversity in Duck Feces
The intestinal health of poultry is of great importance for birdsβ growth and development; probiotics-driven shifts in gut microbiome can exert considerable indirect effect on birdsβ welfare and production performance. The information about gut microbiota of ducks is scarce; by using high throughput metagenomic sequencing with Illumina Miseq we examined fecal bacterial diversity of Peking ducks grown on conventional and Bacillus-probiotic-enriched feed. The probiotic supplementation drastically decreased the presence of the opportunistic pathogen Escherichia/Shigella, which was the major and sole common dominant in all samples. Seventy other bacterial species in the ducksβ fecal assemblages were found to have probiotic-related differences, which were interpreted as beneficial for ducksβ health as was confirmed by the increased production performance of the probiotic-fed ducks. Bacterial Ξ±-biodiversity indices increased in the probiotic-fed group. The presented inventory of the duck fecal bacteriobiome can be very useful for the global meta-analysis of similar data in order to gain a better insight into bacterial functioning and interactions with other gut microbiota to improve poultry health, welfare and production performance
Analysis of Single Biomacromolecules and Viruses: Is It a Myth or Reality?
The beginning of the twenty-first century witnessed novel breakthrough research directions in the life sciences, such as genomics, transcriptomics, translatomics, proteomics, metabolomics, and bioinformatics. A newly developed single-molecule approach addresses the physical and chemical properties and the functional activity of single (individual) biomacromolecules and viral particles. Within the alternative approach, the combination of βsingle-molecule approachesβ is opposed to βomics approachesβ. This new approach is fundamentally unique in terms of its research object (a single biomacromolecule). Most studies are currently performed using postgenomic technologies that allow the properties of several hundreds of millions or even billions of biomacromolecules to be analyzed. This paper discusses the relevance and theoretical, methodological, and practical issues related to the development potential of a single-molecule approach using methods based on molecular detectors
Nanoribbon Biosensor in the Detection of miRNAs Associated with Colorectal Cancer
A nanoribbon biosensor (NRBS) was developed to register synthetic DNAs that simulate and are analogous to miRNA-17-3p associated with colorectal cancer. Using this nanoribbon biosensor, the ability to detect miRNA-17-3p in the blood plasma of a patient diagnosed with colorectal cancer has been demonstrated. The sensing element of the NRBS was a nanochip based on a silicon-on-insulator (SOI) nanostructure. The nanochip included an array of 10 nanoribbons and was designed with the implementation of top-down technology. For biospecific recognition of miRNA-17-3p, the nanochip was modified with DNA probes specific for miRNA-17-3p. The performance of the nanochip was preliminarily tested on model DNA oligonucleotides, which are synthetic analogues of miRNA-17-3p, and a detection limit of ~10β17 M was achieved. The results of this work can be used in the development of serological diagnostic systems for early detection of colorectal cancer