bluuebunny/crossref_metadata_2025_split huggingface dataset:
A functional extracellular matrix biomaterial enriched with VEGFA and bFGF as vehicle of human umbilical cord mesenchymal stem cells in skin wound healing
Authors: Xu Zhongjuan , Cao Junjun , Zhao Zhe , Qiao Yong , Liu Xingzhi , Zhong Junjie , Wang Bin , Suo Guangli 
Published: November 2021

Abstract
The construction of microvascular network is one of the greatest challenges for tissue engineering and cell therapy. Endothelial cells are essential for the construction of network of blood vessels. However, their application meets challenges in clinic due to the limited resource of autologous endothelium. Mesenchymal stem cells can effectively promote the angiogenesis in ischemic tissues for their abilities of endothelial differentiation and paracrine, and abundant sources. Extracellular matrix (ECM) has been widely used as an ideal biomaterial to mimic cellular microenvironment for tissue engineering due to its merits of neutrality, good biocompatibility, degradability, and controllability. In this study, a functional cell derived ECM biomaterial enriched with VEGFA and bFGF by expressing the collagen-binding domain fused factor genes in host cells was prepared. This material could induce endothelial differentiation of human umbilical cord mesenchymal stem cells (hUCMSCs) and promote angiogenesis, which may improve the healing effect of skin injury. Our research not only provides a functional ECM material to inducing angiogenesis by inducing endothelial differentiation of hUCMSCs, but also shed light on the ubiquitous approaches to endow ECM materials different functions by enriching different factors. This study will benefit tissue engineering and regenerative medicine researches.
Disentangling the roles of land-use-related drivers on vegetation greenness across China
Authors: Tang LinLing , Chen Xiaoling , Cai Xiaobin , Li Jian 
Published: November 2021

Abstract
Quantifying the drivers of terrestrial vegetation dynamics is critical for monitoring ecosystem carbon sequestration and bioenergy production. Large scale vegetation dynamics can be observed using the leaf area index (LAI) derived from satellite data as a measure of ‘greenness’. Previous studies have quantified the effects of climate change and carbon dioxide (CO2) fertilization on vegetation greenness. In contrast, the specific roles of land-use-related drivers (LURDs) on vegetation greenness have not been characterized. Here, we combined the Interior-Point Method-optimized ecosystem model and the Bayesian model averaging statistical method to disentangle the roles of LURDs on vegetation greenness in China from 2000 to 2014. Results showed a significant increase in growing season LAI (greening) over 35% of the land area of China, whereas less than 6% of it exhibited a significantly decreasing trend (browning). The overall impact of LURDs on vegetation greenness over the whole country was comparatively low. However, the local effects of LURDs on the greenness trends of some specified areas were considerable due to afforestation and urbanization. Southern Coastal China had the greatest area fractions (35.82% of its corresponding area) of the LURDs effects on greening, following by Southwest China. It was because of these economic regions with great afforestation programs. Afforestation effects could explain 27% of the observed greening trends in the forest area. In contrast, the browning impact caused by urbanization was approximately three times of the greening effects of both climate change and CO2 fertilization on the urban area. And they made the urban area had a 50% decrease in LAI. The effects of residual LURDs only accounted for less than 8% of the corresponding observed greenness changes. Such divergent roles would be valuable for understanding changes in local ecosystem functions and services under global environmental changes.
An algebraic criterion of the Darboux integrability of differential-difference equations and systems
Authors: Habibullin I T , Kuznetsova M N 
Published: November 2021

Abstract
The article investigates systems of differential-difference equations of hyperbolic type, integrable in sense of Darboux. The concept of a complete set of independent characteristic integrals underlying Darboux integrability is discussed. A close connection is found between integrals and characteristic Lie–Rinehart algebras of the system. It is proved that a system of equations is Darboux integrable if and only if its characteristic algebras in both directions are finite-dimensional.
Variety testing of new head lettuce hybrids
Authors: Gish R A , Zvyagina A S 
Published: November 2021

AbstractThe growing demand of the country’s population for head lettuce is met, according to various authors’s estimates, by no more than 30-35%. The mains suppliers from Iran, Israel, and Uzbekistan are actively involved in the import of green crops in Russian Federation. One of the existing levers of increasing the production of head lettuce is the introduction of new high-yielding and complex-resistant hybrids into production and the development of varietal agricultural techniques for their cultivation. The article presents an agro-technology evaluation of new hybrids of head lettuce F1 Serena and F1 LE 10585 of the company “Sakata” according to the main economically valuable indications (productivity, yield, biochemical analysis) in the conditions of the Anapa-Taman zone.
Productivity, quality and efficiency of spring durum wheat cultivation when treating crops with a biological product
Authors: Sergeeva V A , Muravyov A A , Vlasova L M 
Published: November 2021

Abstract
The production experiments were carried out based on the farm “Yaroslav the Wise” of the Starooskol district of the Belgorod region. The article studies the effect of the biological product Biogor KM during the pre-sowing treatment of grain in combination with double spraying of growing plants of spring durum wheat Dar Chernozemya 2. One of the experiments provides for grain processing with the period of “germination-ripening” of its wheat plants reduced by 8 days. The second variant, in addition to processing the grain, had two sprayings carried out during the growing season. The second experiment lasted even less by 12 days in comparison with the control variant. The article establishes the positive influence of the biological product on the formation of the productivity structure of spring durum wheat plants. Grain processing in combination with spraying during the growing season led to the formation of the best productivity structure: plant height was 39% higher, the number of spikelets was 41.8% higher, the number of spikelets was higher by 35.3%, and the grain weight per spike was 39.2%. versus the control variant. The yield in the experiment was in direct proportion to the method of application of the biological product and the conditions of the growing season. The largest increase in yield - 0.40 t / ha or 14.5% was obtained in the variant with grain processing in combination with double spraying of plants during the growing season, the average yield for the studied period was 3.14 t / ha and was maximum, indicators of economic and bioenergy efficiency was also the best.
Automation and digitalization of healthy fruit and berry plants reproduction
Authors: Verzilin A V , Fedulova Yu A , Yu Pimkin M 
Published: November 2021

Abstract
High-quality planting material is a condition for increasing productivity and labor productivity in the cultivation of agricultural products. High-quality planting material is material that is free from harmful pathogens. The process of plant healing requires significant time and material costs. However, with the proper organization, plant healing can be significantly accelerated and cheapened. The main condition for accelerating this process is maximum automation and digitalization of all stages of clonal micropropagation. The article shows the results of many years of work on the cultivation of healthy planting material. Variants of possible improvement of planting stock recovery are proposed with the introduction of the necessary hardware and software at specific stages of recovery and reproduction.
The response of apple tree varieties to the anomalies in the water and temperature conditions in 2020
Authors: Grigoreva L V , Tsukanova D N , Tsukanova E M 
Published: November 2021

Abstract
The authors establish that the destabilization of the water and temperature conditions in farming areas is currently the most significant factor limiting the development of fruit plants. The results of the weather monitoring in 2020 show significant deviations of the water and temperature conditions in that year from the long-time annual averages, the most significant of which are abnormally dry February and March, cold and humid May, as well as the alternating hot and cold spells and dramatic temperature drops between days and nights. The monitoring of the physiological parameters of apple trees showed that the vegetation period of 2020 featured an early start of plant growth, the suppression of photosynthesis in midsummer due to high air temperatures, low precipitation, and the late beginning of winter lethargy for apple trees.
Dependence of productivity of white lupine seeds on the foliar dressing with macro- and micronutrient fertilizers
Authors: Blinnik A S , Naumkin V N , Naumkina L A , Yu Artemova O , Kryukov A N 
Published: November 2021

Abstract
The paper presents the results of the studies on the determination of the effect of foliar dressings with macro- and micronutrient fertilizers on linear growth, the mass of air-dry matter of plants, leaf surface, the formation of a symbiotic apparatus and the yield of seeds of white lupine (Lupinualbus L.) in the conditions of black soils of the Central Black Earth region of the Russian Federation. The field experiments were carried out in 2018-2020 at the Department of Crop production, Breeding and Horticulture of Belgorod State Agrarian University. The object of the research is a high-intensity variety of white Degas lupine. The subject of the research is microfertilizer Aquamix-TV, potassium sulfate fertilizer (K2SO4), phosphate-potassium monophosphate fertilizer (KH2PO4). The weather during the years of the experiments was hot and dry. During the critical periods of the development of lupine plants, a moisture deficit was observed with the excess of heat. The soil cover of the experimental site was represented by a typical medium-thick low-humus heavy loamy black soil with a granulometric composition. The accounting area of the plot was 18 m2, the replication was fourfold and the placement was systematic. The experiment included six variants: control (without fertilizers), foliar dressing with Aquamix-TV micronutrient fertilizer, foliar dressing with potassium sulfate solution, foliar dressing with potassium monophosphate solution, foliar dressing with Aquamix-TV + potassium sulfate mixture and foliar dressing with Aquamix-TV + monophosphate mixture potassium. The analysis of the obtained data showed that the highest yield of seeds of white lupine variety Dega was obtained on variants with foliar dressing with micronutrient fertilizer Aquamix-TV in combination with potassium sulfate and monopotassium phosphate, which amounted to 3.52 and 3.51 t / ha, respectively, which is 0.52 and 0.51 t / ha or 17.3 and 17.1% more than the control variant.
Research on the efficiency of soil melioration with modified organic fertilizer from pig manure
Authors: Gribut E A , Kulikova M A , Kolesnikova T A , Surzhko O A , Merzlaya G E 
Published: November 2021

Abstract
The most effective doses of the modified organic-mineral fertilizer (MOF), produced from non-contact pig manure in the conditions of the Rostov region for the purpose of soil reclamation, were determined. Experimental studies were carried out to determine the most effective dose of MOF based on non-contact pig manure. The dependence of the spring wheat yield on the use of a modified organic-mineral fertilizer based on liquid waste from pig farms fermented bird droppings and mineral fertilizers is determined. The equivalence of the effect of a modified organic-mineral fertilizer based on liquid waste from pig farms and fermented bird droppings, introduced in an equivalent dose, on plant biomass was established. When comparing the effects of different types of fertilizers, their toxicity was not established. The introduction of a modified organic-mineral fertilizer based on liquid waste from pig farms at a dose of 2 t / ha provided the highest biomass yield of 34-day-old plants of spring wheat of the “Zlata” variety, which reached 0.9 g/vessel and was 28.5% higher than the control value. A new organic mineral fertilizer with a pH of 8-10, with an organic content of up to 73% per dry weight, can be used for supporting the quality of liming and improving soil.
Fusarium diseases of sunflower and wheat in Tambov region
Authors: Vypritskaya A A , Kuznetsov A A , Chekmarev V V , Buchneva G N , Dubrovskaya N N , Korabelskaya O I , Gusev I V 
Published: November 2021

Abstract
The study of prevalence and species composition of Fusarium fungi on sunflower and winter wheat crops was carried out in Tambov region. In 1992-2020, 15 Fusarium fungi were identified on sunflower crops. It was identified that the predominant species infecting sunflower plants and seeds are Fusarium oxysporum, F. oxysporum var. orthoceras, F. verticillioides, and F. tricinctum. The prevalence of these pathogens was 16.3-21.8%. On the grain of winter wheat, Fusarium poae, F. equiseti and F. sporotrichioides were more common (19.6-28.6%). It was found that the seeds of Lgovskaya 8, Don Awnless and Don’s Governor were less affected by fusarium infection (by 3 - 4%). It was observed that Fusarium fungi are associated with certain winter wheat varieties. Research results may be useful for specialists studying diseases of sunflower and wheat.
Milk quality and its suitability for technological processing in cows with metritis
Authors: Ryhlov A S , Firsov G M , Loschinin S O , Filatova A V , Avdeenko V S , Krasnikov A V 
Published: November 2021

Abstract
It has been established that the development of metritis in cows after providing obstetric aid as a result of abortion, eversion of the uterus or retention of the placenta is accompanied by an increased microbial and fungal background of the uterus. Without obstetric aid during delivery, only from 5… 9 days after birth, 35.37% of cows had genitals contaminated with various pathogenic microflora. Already on the third day of puerperia, 14 species of bacteria were isolated from cows that were assisted in delivery, which in 74.5% of cases were contaminated with pathogenic microflora: S. aureus (in 15.5% of cases), E. coli (37%), K. pneumonia (12%), and S. pyogenes (10% of cases). The results of mycological studies revealed that A. fumigatus, C. albicans and C. crusei were isolated from cows after obstetrics. It was found out that the content of somatic cells (SC) r = 0.63, the activity of muramidase (AM) r = 0.84, lactoperoxidase (LPO) r = 0.65 and lactoferrin (LF) r = 0.66 change with a high degree of correlation. Milk from cows with metritis showed 2 times higher total bacterial contamination than milk from clinically healthy animals. Milk from sick cows has a reduced number of lactic acid organisms after the first day of storage. At the same time, acid formation occurred faster by 5.0–15.0% than that in control samples of milk prepared for production of lactic acid products. The acidity in milk fermented with Lactobacillus bulgarus was 12.0-13.3% higher than that in the control sourdough samples, and the cell viability of the symbiotic combination was an order of magnitude lower (2.5×106 versus 2.5×107) compared to the control samples of the lactic acid product.
Method of engineering calculation of recuperator parameters for heat extraction from tempered soybeans
Authors: Shuvalov A M , Mashkov A N , Chernov D S , Manaenkov K A , Khatuntsev VV 
Published: November 2021

Abstract
In the conditions of constant growth of prices for consumed energy and competition in the domestic market, rural commodity producers have a problem to reduce energy costs, since they make up a significant share in the cost of agricultural products. There are particularly high energy costs in the heat treatment of meat and dairy products and grain. To reduce energy costs for thermal purposes, you can use the secondary heat extraction and its use in a specific technological process. To calculate the parameters of a heat recuperator that reuses heat energy from heat-treated soybeans, an engineering calculation method is presented.
Water-soluble vitamins in honeys of various botanical origin and their change during storage of honey
Authors: Popkova M A , Budnikova N V , Paramzina I A 
Published: November 2021

Abstract
The richest chemical composition of honey determines its extremely high biological activity. The composition and concentration of bioactive compounds of honey largely depend on its botanical origin, i.e. they are determined by nectar and the pollen chemical composition of the nectariferous plant, on the soil on which they grow, as well as on climate and weather conditions. Along with enzymes and minerals, vitamins are found in honey in small but measurable amounts. Vitamins of honey are mainly represented by B-group vitamins. The content of vitamins in honey varies according to its botanical origin. The following types of honey were used for the study: acacia, sunflower, chestnut, linden, buckwheat. The quantitative determination of water-soluble B-group vitamins (thiamine, riboflavin, pyridoxine, pantothenic acid, nicotinic acid) in honey of various botanical origin was carried out in the accredited laboratory of the direction of chemical and biological research of beekeeping products of the Federal Research Center of Beekeeping by the method of capillary electrophoresis. It was revealed that chestnut and buckwheat honey present the highest levels of water-soluble vitamins content; that confirms the prospects of their use as a source of vitamins. Vitamins are unstable compounds that can be easily destroyed by various factors. Under the impact of daylight, the studied water-soluble vitamins contained in honey are destroyed during storage. The dynamics of changes in the vitamins content was traced during the storage of honey for 12 months in a dark place and in the light. Riboflavin andnicotinic acid, which is significantly reduced, is caracterized by a higher sensitivity to the action of daylight during storage of honey.
Processing of natural plant raw materials and their use as additives in the food industry
Authors: Nikonovich S N , Tarasenko N A , Kucherova S I 
Published: November 2021

Abstract
The article deals with the issues of deep processing of non-traditional plant raw materials – amaranth. The authors found that amaranth seeds of various types are a source of starch and protein, balanced in amino acid composition. A comparative assessment of the main nutrients and mineral composition of amaranth seeds with traditional crops showed that amaranth seeds are unique as raw materials for the production of biologically active additives. It is proved that a fine powder of whole-ground flour is possible to obtain by double mechanical processing of amaranth seeds with mandatory heat treatment before introduction into the recipe. It was experimentally revealed that the developed biologically active additive has a high nutritional value and functional properties, which are formed due to squalene content, essential amino acids and plant phospholipids.
Influence of invasive flora species on the ecosystem of the Russian Far East
Authors: Vinogradova Yu 
Published: November 2021

Abstract
For the first time, based on the revision of herbarium collections, the resettlement of alien flora faction species in the Far Eastern Federal District (FEFD) was divided into four stages. Of the 117 invasive species of the Far Eastern Federal District, 47 ones were registered for the first time before the construction of the Trans Siberian railway, i.e. at the turn of the 1900s, 30 - from 1900 to World War II, 29 - from 1940 to 1980, i.e. before the targeted study of the alien flora faction, and 11 - from 1980 to the present. The data on scientists who played a key role in the study of the flora of the Far Eastern Federal District is presented. Seven species are only beginning to invade natural plant communities, 88 species are actively invading natural plant communities and 22 species belong to the “transformers”, which actively invade themselves into natural and seminatural communities, change the physiognomy of ecosystems, disrupt succession links, forming large single-species dense stands and force out and (or) obstruct the reproduction of aborigine species.
Baseline levels of radionuclides concentration in the sea of Wakatobi and Kendari
Authors: Priasetyono Y , Untara  , Makmur M , Prihatiningsih W R , Yahya M N , Putra D I P 
Published: November 2021

Abstract
The importance of an information about the baseline value of radionuclides in the sea of Wakatobi and Kendari to see how large the input or contamination of radionuclides in the area. This contamination can come from waste human activities such as industry and nuclear utilization activities that are biased carried by seawater currents and air gusts. Natural and anthropogenic radionuclide concentrations in the Wakatobi and Kendari seas have been measured using a Gamma spectrometer (HPGe).The monitoring results show that both 226Ra, 232Th, 40K and 137Cs indicate that they are in normal condition and do not exceed the safe limit. The data presented in this study will be very important and useful to be used as basic data in mapping the improvement of radionuclide contamination in the area.
The antibacterial activity of seagrass Enhalus acoroides against Staphylococcus aureus
Authors: Nur R M , Nurafni  , Koroy K , Alwi D , Wahab I , Sulistiawati S , Dewi R , Rorano M 
Published: November 2021

Abstract

Enhalus acoroides is a type of seagrass found in the waters surrounding the Morotai Islands but has not been economically exploited. Enhalus acoroides can be used to treat ulcers, acne medications, and cosmetics, among other things, due to their antibacterial activity against a variety of bacteria, one of which is Staphylococcus aureus. Staphylococcus aureus can cause respiratory and gastrointestinal tract infections. Staphylococcus aureus can infect any tissue in the body, causing damage to skin tissue. This study aimed to determine the antibacterial activity of E. acoroides against S. aureus and characterize the group of bioactive compounds found in the E. acoroides extract. This study took place between September and October of 2018. Enhalus acoroides samples were collected from the waters surrounding Morotai island. Extraction of E. acoroides in maceration using methanol and n-hexane solvents and qualitative identification of bioactive compounds including alkaloid compounds, flavonoids, steroids, and saponins. The results indicated that the yield of E. acoroidesn-hexane extract was 0.35 percent and Methanol extract was 5.91 percent. Methanol extract E. acoroides (5.9 mm in diameter)1000 ppm is more antibacterial than n-hexane extract E. acoroides (5.6 mm in diameter). The Methanol extract of E. acoroides contains alkaloids, flavonoids, saponins, and steroids, whereas the n-hexane extract of E. acoroides contains steroids and flavonoids.