bluuebunny/crossref_metadata_2025 huggingface dataset:
Cross-polarization of electromagnetic waves reflected by anisotropic gradient planar structures
Authors: Moiseeva Natalja
Published: November 2019

The results of calculating the moduli of the coefficients of the electromagnetic wave reflection matrix (EMW) at the boundary of an inhomogeneous anisotropic medium with torsion using the matrix form of the Wentzel-Kramers-Brillouin (WKB) method are presented. The effect of the orientation of the optical axis and the torsion angle on the polarization of the waves propagating in the medium and on the off-diagonal coefficients of the reflection matrix is shown.
Intermodulation distortion analysis of a complex signal in a microwave optics transmission line
Authors: Shcherbinin Andrey D. , Leonid A. Belov , Kondrashov Alexander S.
Published: November 2019

The requirements for RF fiber optic links for placement on board an Earth satellite or other spacecraft [1–3] are distinguished by a combination of additional hard indicators: by weight, overall dimensions; energy efficiency of the power supply; radiation resistance; reliability of long-term autonomous functioning; out-of-band emission level; cost. Therefore, the development of such devices is relevant and in demand.
The Sun Service KRIM - diagnostic complex of solar activity
Authors: Volvach Alexander , Gopasyuk Olga , Yakubovskaya Inna
Published: November 2019

The radio astronomical diagnostic complex of solar activity, created on the basis of the radio telescope RT-22 and three small radiotelescopes united in the Sun Service KRIM located in coordinates longitude 33° 59' 30" latitude 44° 23' 52", conducts simultaneous observations in the wavelength range from 8 mm to 1.2 m in the monitoring mode and alerts. The Sun Service KRIM registered a series of strong outbreaks in the Sun in September 2017, when it was at a minimum of its activity. The information obtained by radio telescopes correlates well with data from other terrestrial and satellite observatories such as RSTN and GOES. Correlation coefficients are calculated and scattering diagrams for X-ray class flares X9.3 and X2.2 are constructed. The information from the radio telescopes of the Sun Service KRIM allows them to be used for daily monitoring of solar activity, further processing of data obtained in the course of scientific research, short-term forecast of space weather and analysis of its infuence on the Earth.
Detection methods of low-speed small objects for panoramic ultrashort pulsed radar
Authors: Ananenkov Andrey , Sokolov Pavel , Nuzhdin Vladimir , Marin Dmitry
Published: November 2019

The article discusses ways to improve the detection efficiency of small and low-speed objects in conditions of intense background reflections. The properties of the ultrashort pulse echo signals are investigated. The phenomenon of interfering visibility is investigated.
Works of the Marine Hydrophysical Institute of the Russian Academy of Sciences in the field of remote sensing of seas and oceans (to the 90th anniversary of the institute)
Authors: Yermolov Pavel P.
Published: November 2019

The report considers a brief history and the most important results of the Department of Remote Methods of Research of the Marine Hydrophysical Institute of the Russian Academy of Sciences. Information is given about the founder of the institute, Academician V. V. Shuleikin (1895–1979), the director of the institute in 1974–1985 and the founder of the direction “satellite hydrophysics”, Academician B. A. Nelepo (1932–2007). For the first time, the information about one of the founders of the radiophysical methods of remote sensing of the ocean, a representative of the Kharkov scientific school V. V. Pustovoytenko (1946–2015), who worked in Sevastopol for the last forty years of his life and devoted scientific work to the development of satellite hydrophysics, was first introduced into scientific circulation. The general characteristic of the Institute’s work in the field of satellite oceanology is given, and the most significant results associated with the operation of the Kosmos-1500 spacecraft, as well as the specifics of the TPO-05 program and the Veyer-6 project, are considered.
PatientInnen-Mobilität und Anreisedistanz als Risiko für höhergradige Sehbehinderung: Real-Life-Daten therapienaiver AMD-PatientInnen unter intravitrealer Aflibercept-Therapie
Authors: Rauchegger Teresa , Angermann Reinhard , Meusburger Anja , Schwab Jana , Haas Gertrud , Kralinger Martina , Zehetner Claus
Published: November 2019

Fragestellung Ziel unserer Studie war die Analyse der Effektivität von intravitrealen Injektionen mit Aflibercept. Ein weiterer Untersuchungsgegenstand waren mögliche negative Einflussfaktoren auf die Behandlung von PatientInnen mit therapienaiver exsudativer Makuladegeneration.

Methode Es wurden Real-Life-Daten von PatientInnen mit exsudativer altersbedingter Makuladegeneration (nAMD) unter Aflibercept-Therapie retrospektiv erhoben. Erfasst wurden u. a. Geschlecht, Alter, Entfernung zur Klinik in km, Art des Transports, bestkorrigierter Visus (BCVA), zentrale Foveadicke (CFT) bei Diagnosestellung und allen Verlaufskontrollen, Sehbehinderung nach WHO-Kriterien, Anzahl der Kontrollen und Anzahl der Injektion im 1. Jahr sowie im 2. Jahr nach Behandlungsbeginn.

Ergebnisse Es wurden Daten von 483 PatientInnen erhoben. Die PatientInnen erhielten in den ersten 12 Monaten 4,91 ± 1,9 Injektionen und nach 26 Monaten 7,06 ± 3,6 Injektionen. Nach der initialen Loading Dose steigerte sich der BCVA signifikant von 0,72 logMAR (± 0,44) auf 0,63 logMAR (± 0,45; p = 0,03), jedoch kam es bis zum Ende des Beobachtungszeitraums zu einem signifikant schlechteren Visus als zu Behandlungsbeginn (0,82 logMAR ± 0,48; p < 0,01). In einer Trendanalyse zeigte sich mit weiterer Entfernung des Wohnorts zur Klinik ein signifikant höherer Anteil der PatientInnen, die einen Krankentransport oder eine Begleitung aus dem privaten Umfeld benötigten. Außerdem war in Korrelation mit der Distanz zur Klinik ein signifikanter Anstieg höhergradiger Sehbehinderungen feststellbar (beides p < 0,001).

Schlussfolgerung Die Real-Life-Daten therapienaiver PatientInnen mit exsudativer AMD unter Aflibercept-Therapie zeigen, dass im Vergleich zu randomisierten klinischen Studien ein schlechteres Visusergebnis und eine niedrigere Injektionsfrequenz erzielt wurde. Der höhere Bedarf für einen begleitenden Patiententransport und der Anstieg der Prävalenz höhergradiger Sehbehinderungen bei zunehmender Entfernung des Wohnorts zur Klinik könnten einen Hinweis auf strukturelle Probleme der Versorgungsqualität von PatientInnen mit nAMD darstellen.
Achtsamkeit und Akzeptanz in der Interaktionsbezogenen Fallarbeit (IFA)
Authors: Stepputat Frank
Published: November 2019

Das Thema Achtsamkeit hat in den letzten 20 Jahren stark an Einfluss in der Psychotherapie und in vielen anderen Bereichen des westlichen Lebens gewonnen. Dieser Artikel geht nach einer kurzen Einführung zur Achtsamkeit darauf ein, wie und wann Achtsamkeit und Akzeptanz theoretisch und praktisch in der Interaktionsbezogenen Fallarbeit in der Gruppe und im Gruppenprozess eingesetzt werden können. Nutzen und Anwendung werden mit Beispielen beschrieben, ebenso wird auf mögliche Schwierigkeiten in der Anwendung eingegangen.
Hypoglykämien und Gehirn
Authors: Frank Erbguth
Published: November 2019

Aufgrund seiner energetischen Abhängigkeit von der direkten Glukosezufuhr ist das menschliche Gehirn gegenüber Hypoglykämien sehr vulnerabel. Schwere Hypoglykämien führen zu Bewusstseinsstörungen, schlaganfallähnlichen fokalen motorischen Symptomen und Krampfanfällen. Akute Funktionsstörungen können bei schwerer hypoglykämischer Exposition in irreversible neuronale Zellschädigungen übergehen. Zerebrale Regulationsmechanismen tragen nach rezidivierenden Hypoglykämien zur Ausbildung einer Hypoglykämie-Wahrnehmungsstörung bei, die das Risiko schwerer Hypoglykämien weiter erhöht. Bei Typ-1-Diabetespatienten konnten bis ins mittlere Lebensalter keine negativen kognitiven Auswirkungen vermehrter Hypoglykämien bewiesen werden, allerdings ist offen, ob sich diese möglicherweise erst in höherem Lebensalter manifestieren. Bei Typ-2-Diabetespatienten bestehen bi- oder sogar tridirektionale kausale Zusammenhänge zwischen eingeschränkter Kognition, Hypoglykämien und einer schlechten glykämischen Kontrolle.
Synthesis of Sulfonylisoureas via Sulfo-Click Reactions
Authors: Ottenbruch Moritz , Mohr Fabian , Kirsch Stefan F.
Published: November 2019

The synthesis of sulfonylisoureas from thiocarbamates and sulfonyl azides via a new variant of the sulfo-click reaction is reported. Water was found to be the environmentally benign solvent of choice over various other solvents tested, and the use of any additives was not required to obtain complete conversion. The experimentally simple reaction­ tolerates a broad range of electron-donating and electron-withdrawing substituents attached on both the thiocarbamate and the sulfonyl azide, as shown with the synthesis of 27 sulfonylisoureas that were prepared in yields ranging from 34% to 78%.
Improving Outcomes of Iatrogenic Type A Aortic Dissection during Cardiac Surgery
Authors: Shea Nicholas J. , Polanco Antonio R. , D'Angelo Alex , Bethancourt Casidhe-Nicole , Sanchez Joseph , George Isaac , Patel Virendra , Takayama Hiroo
Published: November 2019

Background Iatrogenic Type A aortic dissection (IAD) is a rare but devastating complication of cardiac and aortic surgery with reported operative mortality of 30 to 50%. In this study, we report our experience with IAD and propose a standardized approach to management.

Methods From January 1, 2000 through December 31, 2016, 23,275 patients underwent cardiac surgery at our institution. We identified 15 patients who developed IAD. Our approach to management included (1) immediate repair, (2) involvement of a second attending surgeon, (3) aggressive monitoring of malperfusion, (4) securing true lumen arterial perfusion access and systemic cooling, and (5) performance of hemiarch or total arch replacement based on the presence of suspected brain malperfusion. The index operation was also completed at the same time. Patient preoperative characteristics, operative sequence and technique, complications, and outcomes were analyzed with chart review.

Results The incidence of IAD at our institution was 0.06% (n = 15). A disproportionate percentage of patients had aneurysmal ascending aortas (33.3%). The index surgery consisted of aortic surgery in five patients (33.3%), coronary bypass in three patients, valve surgery in five patients, and transplantation in one patient. The mechanism of dissection was aortic cannulation in 66.7% and aortic root vent site cannulation in 13.3%. In 46.7% of patients, the IAD was first recognized based on clinical evidence such as aortic hematoma, pericardial bleeding, or abnormal perfusion line pressures. In 40.0%, the diagnosis was made with intraoperative echocardiography without any clinical manifestations. The timing of the diagnosis was at the initiation of cardiopulmonary bypass initiation in 60.0%, while in 40.0% it was recognized after discontinuation of bypass. Hemiarch was done in 73.3% and total arch replacement performed in 13.3%. Isolated ascending repairs were done in two patients. Bypass and cross-clamp times were 229.5 ± 212.7 minutes and 130.5 ± 109.5 minutes, respectively. In-hospital mortality in our cohort was 6.7%. While stroke occurred in one patient, no visceral organ malperfusion was recognized.

Conclusions Incidence of IAD is low with cannulation of an aneurysmal aorta being a risk factor. A standardized approach may result in reduced operative mortality.
Revealing the excitation energy transfer network of Light-Harvesting Complex II by a phenomenological analysis of two-dimensional electronic spectra at 77 K
Authors: Do Thanh Nhut , Huerta-Viga Adriana , Akhtar Parveen , Nguyen Hoang Long , Nowakowski Paweł J. , Khyasudeen M. Faisal , Lambrev Petar H. , Tan Howe-Siang
Published: November 2019

Energy equilibration in light-harvesting antenna systems normally occurs before energy is transferred to a reaction center. The equilibration mechanism is a characteristic of the excitation energy transfer (EET) network of the antenna. Characterizing this network is crucial in understanding the first step of photosynthesis. We present our phenomenology-based analysis procedure and results in obtaining the excitonic energy levels, spectral linewidths, and transfer-rate matrix of Light-Harvesting Complex II directly from its 2D electronic spectra recorded at 77 K with waiting times between 100 fs to 100 ps. Due to the restriction of the models and complexity of the system, a unique EET network cannot be constructed. Nevertheless, a recurring pattern of energy transfer with very similar overall time scales between spectral components (excitons) is consistently obtained. The models identify a “bottleneck” state in the 664–668 nm region although with a relatively shorter lifetime (∼4–6 ps) of this state compared to previous studies. The model also determines three terminal exciton states at 675, 677–678, and 680–681 nm that are weakly coupled to each other. The excitation energy equilibration between the three termini is found to be independent of the initial excitation conditions, which is a crucial design for the light-harvesting complexes to ensure the energy flow under different light conditions and avoid excitation trapping. We proposed two EET schemes with tentative pigment assignments based on the interpretation of the modeling results together with previous structure-based calculations and spectroscopic observables.
Features of Excess Conductivity Behavior in a Magnetic Superconductor Dy0.6Y0.4Rh3.85Ru0.15B4
Authors: Solovjov A. L. , Terekhov A. V. , Petrenko E. V. , Omelchenko L. V. , Cuiping Zhang
Published: November 2019

The temperature dependencies of the excess conductivity σ′(T) and possible pseudogap (PG), Δ*(T), in a Dy0.6Y0.4Rh3.85Ru0.15B4 polycrystal were studied for the first time. It was shown that σ′(T) near Tc is well described by the Aslamazov–Larkin (AL) fluctuation theory, demonstrating a 3D–2D crossover with increasing temperature. Using the crossover temperature T0, the coherence length along the c axis, ξc(0), was determined. Above the level of T2D > T0, an unusual dependence σ′(T) was found, which is not described by the fluctuation theories in the range from T0 to TFM, at which a ferromagnetic transition occurs. The range in which superconducting fluctuations exist is apparently quite narrow and amounts to ΔTfl ≈ 2.8 K. The resulting temperature dependence of the PG parameter Δ*(T) has the form typical of magnetic superconductors with features at Tmax ≈ 154 K and the temperature of a possible structural transition at Ts ∼ 95 K. Below Ts, dependence Δ*(T) has a shape typical for PG in cuprates, which suggests that the PG state can be realized in Dy0.6Y0.4Rh3.85Ru0.15B4 in this temperature range. Comparison of Δ*(T) with the Peters–Bauer theory made it possible to determine the density of local pairs near Tc, 〈n↑n↓〉(TG) ≈ 0.35, which is 1.17 times greater than in optimally doped YBa2Cu3O7–δ single crystals.
Quantum eigenvalue estimation via time series analysis
Authors: Somma Rolando D
Published: November 2019

We present an efficient method for estimating the eigenvalues of a Hamiltonian H from the expectation values of the evolution operator for various times. For a given quantum state ρ, our method outputs a list of eigenvalue estimates and approximate probabilities. Each probability depends on the support of ρ in those eigenstates of H associated with eigenvalues within an arbitrarily small range. The complexity of our method is polynomial in the inverse of a given precision parameter ϵ, which is the gap between eigenvalue estimates. Unlike the well-known quantum phase estimation algorithm that uses the quantum Fourier transform, our method does not require large ancillary systems, large sequences of controlled operations, or preserving coherence between experiments, and is therefore more attractive for near-term applications. The output of our method can be used to estimate spectral properties of H and other expectation values efficiently, within additive error proportional to ϵ.
An anthropogenic load of copper and somatic health
Authors: Khlusov I , Slepchenko G , Moiseeva E
Published: November 2019

The issues of good health and well-being for people have been reflected in the UN Sustainable Development Goal No. 3. The presented paper focuses on the increase in the copper content in the body by 3-4 times within 3-4 months. It is established that such an increase is not accompanied by a change in the biochemical parameters of blood and the structure of somatic pathology characteristic of the population of Tomsk, who are not engaged in industrial production.
Cattle leukemia in the territory of the Irkutsk region
Authors: Batomunkuev A S , Sukhinin A A , Evdokimov P I
Published: November 2019

The article presents an analysis of the results of diagnostic studies on cattle leukemia in the Irkutsk region for 2004-2017. It has been established that infection with the cattle leukemia virus was 3.7 ± 0.4%; the number of hematological sick animals was 4.2 ± 0.2%. During the analyzed period, the percentage of infected livestock decreased (p <0.01) in both public and individual sectors. The number of hematological animals ranged from 2.3 to 6.1% (with peaks in 2007 and 2015) and was characterized by a slight decrease (by 0.9%).
Agroecological substantiation of the sustainable development of arable soil fertility of the Altai dry steppe
Authors: Кudryavcev A , Stetsov G , Toropova E
Published: November 2019

The soil resources of the Altai dry steppe (and their fertility in particular) degrade in their evolutionary anthropogenic development. Transformation of fertility is occurring due to a combination of phenomena, such as natural conditions, intensive use, farming system practiced in the absence of science-based regimes. It is established that the humus content and humus horizon thickness are statistically significantly reduced due to the activation of deflation and dehumification processes. More than that, areas of alkaline soils are increasing. The authors also point out to the degrading granulometric composition. Also, the amount of physical clay, silt fractions, cation exchange capacity, exchangeable calcium, potassium, and mobile phosphorus decreases. Statistical processing of fertility parameters of allowed us to develop a scale of process dynamism and establish the degree of dynamism in the considered soil properties, as well as to assess the rate of increasing adverse changes or their absence. Intensity of degradation processes and indicators determining it contributed to the development of levels of agro-ecological state, such as “Norma”, “Risk”, “Krizis” and “Bedstviye” (based on GIS).
Using mathematical modeling in predicting the economic efficiency of lake-commercial fish farming in cross-border areas of northern Kazakhstan
Authors: Baryshnikov G , Fomin I , Nasarova T
Published: November 2019

On the basis of the developed mathematical forecasting model, the prospects for developing the lake commercial fish farming. Also, its effectiveness in the cross-border regions of northern Kazakhstan is considered in details.
Prospects for using post-mortal genetic materials on the example of sable to ensure the biodiversity in natural systems
Authors: Silkin I , Popov A , Dashko D
Published: November 2019

The article presents a technique of taking a genetic material from a postmortem material of appendage and testes of sables, conducted research to determine the mobility of sperms, morphological assessment and survival of sperms outside the animal body. When introducing artificial insemination in the sable industry, the use of post-mortem genetic material obtained from male sables is a promising direction in the reproduction of sable as a particularly valuable commercial species, as well as for its introduction into the zoo culture in order to ensure the biodiversity of natural systems where these animals live. It can also be used in the development of programs for the reproduction and conservation of populations of other particularly valuable, rare, and endangered species of mammals.
The effect of the sum of soil temperatures on the yield model of onion (Allium cepa L.) in the High Altai Priobye
Authors: Gefke I , Zharkova S
Published: November 2019

The article presents an information-logical model of the dependence of the productivity of onion on certain meteorological and soil-physical factors. The authors conclude that meteorological factors of the growing season have a great influence on crop production, namely the hydrothermal coefficient and the sum of temperatures. Soil-physical factors (humidity and volumetric heat capacity) are also highly important.
Present climate development in Southern Siberia: a 55-year weather observations record
Authors: Kharlamova N , Sukhova M , Chlachula J
Published: November 2019

Siberia is a key region for study of the climate development in north-central Eurasia in terms of global climatic change. The relief creates a major orographic barrier for atmospheric streams influencing the regional altitudinal weather zonality. Systematic 55-year (1963-2017) weather observations along the 700 km N-S latitudinal transect across the southern Siberian plains and the adjoining ranges of the Altai-Sayan Mountains document progressing seasonal temperature and humidity shifts. Standard meteorological data from twenty meteorological stations in different topographical and natural settings with specific weather conditions document a rise of a regional atmospheric humidity balance reflected by the increased bulk annual precipitation rates in the mountain areas accompanied by pronounced seasonal air-temperature fluctuations. This regionally trend provides evidence speaking in favor of the strengthening climate continentality over Siberia, which is also manifested by the pronounced seasonal temperature regime with increased thermally positive and negative air temperature anomalies. A landscape response to a climate warming is particularly evident in the high mountain zone. The present thermal conditions with raised MAT contribute to the progressing melting of mountain glaciers and degradation of permafrost in the alpine zone, as well as aridization of the parkland-steppe areas that are being partly transformed into continental semi-arid to deserted steppes. The associated environmental transformations trigger shifts in the local biotopes and ecosystems, with an altitudinal expansion of taiga-forest into the alpine tundra belt and xerothermic grassland invasions in the foothills. The modern climate changes have a major bearing to the Altai-Sayans socio-economic development.
Using natural zeolites to improve the quality of unrefined vegetable oils
Authors: Tereshchuk L V , Starovoytova K V , Crol A N
Published: November 2019

The article is devoted to the study of the possibility of using natural zeolites as adsorbents for the purification of unrefined vegetable oils, intended for direct consumption in food, from undesirable concomitant substances. To increase their sorption capacity, various activation methods were used, such as physical and chemical. The best sorption properties were found in zeolites, activated by the complex method (heat and acid treatment). Conducted refining of unrefined sunflower oil allowed to increase its quality to meet the requirements of the state standard for the highest grade oil.
The state of ichthyofauna of Yakutia in modern conditions
Authors: Tyaptirgyanov M , Tyaptirgyanova V , Tyaptirgyanova T
Published: November 2019

The article presents the results of many years of research on the fish fauna of Yakutia. Big changes in the general ecological situation, especially the influence of the anthropogenic factor, had a negative impact on individual structural indicators of populations.
Economic efficiency of biological protection of cucumber from root rot in a closed ground
Authors: Alekseeva K L , Shatilov M V , Razin O A
Published: November 2019

The article presents an analysis of the world and Russian production of cucumbers, as one of the most common vegetable crops in many countries, open and closed ground. Among the vegetable crops grown in protected soil, the most profitable is cucumber. The share of each district in the gross harvest of cucumbers closed in Russia is calculated, and the regions with the maximum absolute index are listed. The volume of imports to Russia is shown in terms of value and in kind, indicating the key supplier countries. In recent years, more and more demand in the market is becoming environmentally friendly vegetable products, the cultivation of which is widely used biological remedies. To obtain environmentally friendly products, it is necessary to use plant protection systems based on the use of biological plant protection products and growth regulators, which increase the disease resistance of plants in adverse conditions. To analyze the effectiveness of such means, in the course of research, the effect of the drug Gliocladin in combination with the growth regulator Zircon against the root rot was studied. On the basis of the obtained data, the economic effect of their use in the conditions of film greenhouses is calculated.
Monogerm table beet from the perspective of economic efficiency
Authors: Vetrova S A , Zayachkovskyi V A , Sirota S M
Published: November 2019

Garden beets are one of the most popular vegetable root crops, which are grown everywhere. The existing commodity production in Russia is not able to provide the population’s need for fresh vegetable products. In this regard, attracting the attention of large farms to the culture of garden beets, as one of the economically viable among the group of garden root crops, is an actual task. In connection with the intensification of agricultural production, the cultivation of single-seeded (single fruit) varieties and hybrids suitable for mechanized cultivation is an important direction in the selection of garden beets. The article provides a comparative analysis of economic efficiency in the cultivation of multi-seeded and single-seeded varieties of breeding of the Federal Scientific Center for Vegetable Growing (Russia). The calculations were carried out on tariffs and prices relevant in 2017. It is proved that in the production of single-breed varieties, the total amount of production costs decreases by 19.4%, compared with the multi-seeded standard variety. The high marketability of the products obtained in the context of lower production costs determines an increase in net income from sales, as a result, the profitability of production increases, which makes it possible to introduce single-fruited varieties in crop rotation without risking profit.
The life cycle and parasitic system of opisthorchis felineus in the Irkutsk opisthorchiasis focus
Authors: Rusinek O T
Published: November 2019

The article for the first time presents generalized data on the parasitic system and the life cycle of Opisthorchis felineus (Plathelminthes: Trematoda) in the Irkutsk center of opisthorchiasis on the river Biryus. The relatively low abundance and contagion of the first (mollusks) and second intermediate hosts (fish) clearly demonstrates that the natural and anthropogenic sources of invasion are very minor here. Human, domestic cats are infected with opistorch. However, because of the actual breaking of the chain, their eggs may not be released into the water due to objective circumstances (remoteness, small number or absence of the first intermediate owners). O. felineus during the implementation of its life cycle in the parasitic system can complete it as an autogenous species, without leaving the aquatic environment and as an allogeneic species, completing the life cycle in land mammals and in humans.
Adsorption of a pyridine-phenol mixture from aqueous solutions with preheated active carbons
Authors: Belyaeva O , Golubeva N , Belyaeva E
Published: November 2019

The article investigates the fundamental possibility of using preheating of the activated carbon in air and in an inert atmosphere to increase its adsorption capacity during adsorption extraction from aqueous solutions of a mixture of phenol – pyridine. It is found that such a modification affects more adsorption of pyridine than of phenol. At the same time, heating in an inert atmosphere turned out to be more efficient.
Prediction of the space-time state of systems using geospatial data for assessing technological risks
Authors: Bugakova T Yu
Published: November 2019

The article deals with the tasks of mathematical modeling and forecasting of the space-time state of systems using geospatial data for assessing technological risk. Predicted functions of changes in the space-time state of the system, obtained by the exponential smoothing method, are constructed. The article provides an example of options for changing the space-time state of an object based on the exponential smoothing method.
Winter hardiness of Iris barbatus L. in the climatic conditions of the nonchernozem zone of Russia
Authors: Levko G D , Kharchenko V A , Ushakova I T
Published: November 2019

The article presents a comparative analysis of such an important trait that is economically valuable for vegetative reproduction in the bearded iris as the degree of winter hardiness of rhizomes. Economic efficiency for the industrial production of planting material is also calculated. The degree of winter-hardness was determined by the ratio of the number of plants left before winter to the number of plants that grew up in early spring. As a result of research, 84 varieties of domestic and foreign selection were assessed, among which a total of four groups were identified with varying degrees of winter hardiness. Observations have shown that the irises of domestic breeding and time-tested foreign varieties, which have been cultivated for a long time in central Russia, are most resistant to overwintering. The economic efficiency of growing planting material was 144% per unit area (1 ha).
Economic efficiency of the raw materials production for obtaining a natural food dye from Amaranth
Authors: Pivovarov V F , Gins M S , Gins V K
Published: November 2019

The paper presents the economic results of the raw materials production of fthe ood red-violet dye, enriched with antioxidants from the leaves of two varieties of amaranth (Valentina, Don Pedro) breeding of the Federal Scientific Center for Vegetable Growing (Russia). The amaranth plant leaves are used both as a raw material for the production of food-grade natural dye for coloring confectionery products, beverages, and so can be used as part of salads, soups, sauces, enriching them with biologically active substances (in particular, ascorbic acid and phenolic compounds), giving them both original taste and color. The article analyzes the economic efficiency of growing amaranth plants in an open and protected ground, depending on additional mineral fertilizer to obtain a natural food dye. Calculated in prices of 2018, the economic efficiency indicators for both products and resources proved to be satisfactory. Costs per hectare amounted to 77 thousand rubles for cultivation in open ground conditions and 225 thousand rubles for cultivation in a film greenhouse. The cost of raw materials varied from 550 to 880 rubles per kilogram under these conditions. The gross profit ranged from 15 to 125 rubles/ha, profitability ranged from 14 to 81%.
An innovative technology for natural raw materials processing and phytocomplex production of a functional purpose
Authors: Sadi Sai-Suu S. , Kalimullin M I , Poznnyakovskiy V M
Published: November 2019

The main consumer vector of the food sector is positioned with functional products. Issues of providing the body with a complete, balanced diet are the determining factor in the formation of human health. Addressing women’s health issues is of particular relevance in the social policy of the state, since the health and development of the future generation as a whole depends on women’s health. The science-based prescription formula and innovative technology of the biologically active complex in the form of dietary supplements on a plant-based basis have been developed. Clinical trials on a representative group of women with premenstrual syndrome, conducted as evidence of its effectiveness. The developed phytocomplex contains synergistically active ingredients for nutritive and metabolic support of the female body during the period of hormonal imbalance. Phytoestrogens contained in herbal ingredients stimulate tissue receptors during menopause, triggering a response aimed at normalizing impaired functions. An innovative method of matrix tableting in the manufacture of dietary supplements provides a prolonged effect of biologically active substances with adjustable speed. The article shows that the developed form of dietary supplements is an effective treatment for premenstrual syndrome. In combination with the psychotropic drug Grandoxin, the dietary supplement leads to a significant improvement in all indicators of psychological testing, namely a decrease in the degree of depression, reactive anxiety, and a significant decrease in the indices of vegetative disturbances. Joint therapy has a more pronounced therapeutic effect. It completely suppresses or weakens the clinical manifestations of premenstrual syndrome. The developed formula of dietary supplement is well tolerated by patients and does not cause any side effects.
Improving the technological process for the mini-tubers production of the original seed of Jerusalem artichoke
Authors: Manokhina A A , Starovoitova O A , Starovoitov V I
Published: November 2019

The purpose of the research is the development and improvement of the technological process of production of mini-tubers of the original seed Jerusalem artichoke to increase the quantitative yield of the standard seed fraction “original seed Jerusalem artichoke” in accordance with the requirements of GOST R 55757-2013. The development of the technological process of production of the original seed Jerusalem artichoke was carried out with the introduction into the culture and reproduction through meristem; cuttings of plants from test tubes were carried out for their further reproduction; then, plants from test tubes were planted in propagatory specially made at the Institute installation for aerogydromassage the method of obtaining the minitubers. Introduced into the culture in vitro and propagated ten varieties (hybrids) of Jerusalem artichoke. In the production 1000 in vitro micro plants, the costs amounted to 76.5 thousand RUB From one plant turned out more than 15 pieces of size more than 10 mm when growing minitubers in aerohydroplane propagator. The proposed methods can increase almost 2 times the volume of production of superelites of standard quality and increase profitability by 29%, for practical implementation with the greatest efficiency they can be implemented on the basis of modern well-equipped high-tech enterprises that are specialized in the original seed Jerusalem artichoke.
Sustainable development and social and environmental risks of industrial regions of Siberia
Authors: Sugak E
Published: November 2019

The high investment potential of the regions of Siberia is substantially leveled by the low infrastructural potential and the high level of investment risks, primarily social and environmental risks. Consequently, the fundamental basis for ensuring their sustainable development and increasing investment attractiveness is the optimization of social and environmental risks. And the main indicators of their sustainable development are the indicators characterizing the environmental safety and social and environmental risks of the population. To assess the socio-environmental risks of harm to the health of the population of the region, taking into account its specific features, we propose to use data mining methods and neural network models, along with classical methods.
State and problems of exporting the products of the agro-industrial complex in the Altai region
Authors: Bugai Yu , Minenko A , Khorunzhin M
Published: November 2019

The article reflects the export orientation of the Altai Region and its relationship with the production of agro-industrial products. Export promotion instruments, including subsidies for compensation of a part of the costs of transporting agricultural products and foodstuffs, as well as a preferential tariff for the transportation of grain by rail are considered. The structure of exports of agricultural products are analyzed. Infrastructure and logistics problems of the grain market are also reviewed.
Formation and implementation of the strategy of food import substitution in ensuring sustainable development of the border region (on the materials of the Amur region)
Authors: Vlasova N , Lazareva V
Published: November 2019

The article substantiates the importance and importance of the role of the implementation of the strategy of import substitution in ensuring the food security of the border region and its sustainable development. The hypothesis of the study is that the implementation of the import substitution strategy, which involves reducing food imports and organizing their production within the region, can be achieved through more efficient use of the potential of the border position. On the example of the Amur region, the article analyzes the labor supply for increasing agricultural production and calculates the need for labor resources for the future. It was justified the need for widespread use of foreign labor. The calculations can be used by regional authorities in the formation and implementation of import substitution strategies, as well as in determining the size of quotas for attracting foreign labor.
Synthesis of Ultra-High Temperature ZrC Ceramic Powder by Sol-Gel and Spark Plasma Sintering Method
Authors: Miao Yang , Zhang Fengnian , Huang Mingdeng , Shi Guohua , Huang Hao
Published: November 2019

In this work ultra-high temperature zirconium carbide (ZrC) powders were synthesized using sol-gel method combined with Spark plasma sintering (SPS). It can be concluded that SPS sintering for synthesis powder were both fast and efficient. Grain growth of ZrC particles could be also limited due to the fast heating rate. Temperature over 1700°C will lead to the fast formation of ZrC powder. Pure ZrC powders could be obtained with an grain size of 100-500nm at temperature of 1750°C for 5min. Due to the fast heating/cooling rate, long heat treatment period is significantly reduced and the grain size could be strongly suppressed.
Preparation and Characterization of Rare Earth Zirconate Mesoporous Powders by Template Method
Authors: Sun Haoran , Hu Chuanqi , Zhang Shichao , Sun Xiankai , Tao Liushi , Fang Kai , Yan Dachen , Chen Yufeng
Published: November 2019

The mesoporous zirconate powders were synthesized by solvent evaporation using P123 as templates. The phase composition, pore size distribution and thermo-physical properties were tested and analysed in this study. The test results show that the samples have mesoporous structure after removing template by heat treatment. Mesoporous pore size are mainly distributed in the range of 5-50nm, and the pore volume less than 50nm accounts for about 24% of the total. The thermal diffusivity and thermal conductivity of mesoporous (La0.8Yb0.2)2Zr2O7 are lower than common alumina and zirconia materials, and the lowest thermal conductivity is only 0.218W/(m•K).
Green Synthesis of ZnO Nano Particles Using Chlorella vulgaris Extract as Additives
Authors: Zhang Xilian , Li Wenkui , Su Kaiyu , Zhang Ruibo , Han Haoyun , Deng Yingying , Luo Shanshan
Published: November 2019

The application of nano zinc oxide in health-related fields calls for green and environmentally friendly synthetic methods. In this paper, Chlorella vulgaris extract was used to synthesize uniform nano sized zinc oxide particles. The results indicate that Chlorella vulgaris extract can effectively reduce the size of zinc oxide particles. The as synthesized ZnO particles using Chlorella vulgaris extract as additive are about 20-40nm.
Preparation and Properties of Pre-Stressed Ceramic Plate
Authors: Kuang F H , Bao Y W , Zhang H B , Ren J L , Ren R K
Published: November 2019

Ceramics are widely used because of their excellent mechanical properties, electrical insulation properties, high temperature resistance and corrosion resistance. Ceramic plate is one of important branch of ceramic components. However, brittle fracture caused by low toughness and high sensitivity to surface defects limits the reliability of ceramics. Therefore, there are a lot of research on strengthening and reducing defects of ceramic plate. In this work, a pre-stressed ceramic plate was obtained by a simple method, which was impregnated with a layer of alumina slurry on the surface of zirconia substrate and sintered at 1500°C. Because the expansion coefficient of alumina is lower than that of zirconia, a compressive stress is formed on the surface of plate, which can reduce the defect sensitivity and improve the bending strength of ceramic plate. Compared with the pure zirconia plate, the strength was improved with about 40%.
Measurement of Cell Body and the Whole Surfaces of Long Fiber Reinforced Woven Composites
Authors: Wei Jinhua , Wang Haoji , Lin Bin
Published: November 2019

3D measurements at cell body and the whole surface scales are researched as one of the series of long fiber reinforced woven composites (LFRWCs) multi-scale measurement and evaluation. This paper proposes a method to determine the maximum sampling step (MaxSS) at cell body surface scale and the minimum cell body number (MinCBN) at the whole surface to solve the problem that the measurement results are inaccurate owing to the improper sampling parameters. Three LFRWC surfaces are tested as demonstrations to state the method concretely. The results show that as long as the woven style and the processing angle are confirmed for an LFRWC, the shape and the size of the cell body is constant. At cell body scale, the sampling area is equal to the cell body size, and the MaxSS is about fiber diameter. At the whole surface scale, the proper sampling step should not go beyond the MaxSS at cell body scale, and the MinCBN the sampling area should contain is different for various materials which should be determined based on the practical situation. This research provides a fundament for the precise evaluation of the relation between an LFRWC property and the whole surface topography.
Effect of Slurry Dispersion on Properties of Silica Fiber Based Thermal Insulation Materials
Authors: Xing Zhengpeng , Sun Chenggong , Jing Zhao , Cao Junchang , Cheng Honghao , Tang Jianxin
Published: November 2019

Short silica fibers are prone to conglomerate in aqueous medium, which means that dispersity and suspension stability show key effect on the uniformity of ceramics with silica fibers as raw materials. In this work, various parameters including pH values, dispersants and dispersing approaches, were systematically studied to investigate the effect of slurry dispersion on properties of thermal insulation materials with silica fibers as matrix. Moreover, the novel composite dispersants were creatively introduced in this work and the corresponding synergetic dispersion mechanism was investigated as well. Fiber slurries with optimized dispersing and suspension properties was obtained when pH values were set as 4, the content of R type dispersant was adjusted to 0.12% and the addition of PEO was fixed at 0.04%. After settling for 360s, no obvious agglomeration could be found. Rigid thermal insulation materials with homogeneous structure and high performance were obtained with conditions mentioned above, which can be expected to further expand the application of short silica fibers.
Effect of Fiber Content on Properties of Fiber Reinforced Nano-SiO2 Thermal Insulation Material
Authors: Fang Kai , Zhang Shichao , Sun Haoran , Sun Xiankai , Tao Liushi , Yan Dachen
Published: November 2019

In this paper, fumed nano-SiO2 as the main raw material, SiO2 insulation materials were prepared by the dry processing. Porous characteristic, insulation performance and mechanical properties have been systematically studied. The dry processing method for the fabrication of fibrous fumed silica boards is used. As a reinforcing fiber, K2O•6TiO2 not only improves the strength of the material, but also enhances the thermal insulation performance of the material at high temperature. The effect of fiber content on the mechanical and personal properties of materials was studied. At 20% fiber content, the compressive strength reaches 3.96 MPa, and the thermal conductivity increases from 0.048 W/m•k at 200°C to 0.094 W/m•k at 600°C.
Research Progress of Continuous Fiber Reinforced Ceramic Matrix Composite in Hot Section Components of Aero engine
Authors: Chen Mingwei , Qiu Haipeng , Xie Weijie , Zhang Bingyu , Liu Shanhua , Luo Wendong , Ma Xin
Published: November 2019

Continuous fiber reinforced ceramic matrix composite (CFRC CMC) possessed low density, high temperature resistance, high strength and high toughness, which have been identified as a key and promising military material for replacing the traditional super alloy. CFRC CMC had been used in some hot section components, such as nozzle, combustor and turbine stator on M88-2, F100-PW-229, CFM56-5B, F-135, GEnx, LEAP-X and other aeroengines. Manufacturing technologies of CFRC CMC were thought as the commanding elevation for hot section components of aeroengines, and therefore much attention was given in Europe, America, Russia and other developed countries and regions. The evaluation and application of CFRC CMC were introduced in detail. Further, the challenge and tendency in the future were also put forward in this study.
Preparation and Properties of Boron Nitride Fiber Reinforced SiBON Composites
Authors: Zhai Ping , Duan Xiaofeng , Wu Yun
Published: November 2019

In this paper, BNf/SiBON composites were prepared by adding short boron nitride fibers and in-situ inorganic solid state reaction. The relationships among hot-pressing sintering temperature, boron nitride fiber content, density and flexural strength of the composites were studied. The phase composition and microstructure of the composites were also analyzed and characterized. The results show that the bending strength of BNf/SiBON increases with the increase of sintering temperature when the fiber content is constant, and decreases with the increase of fiber content when the sintering temperature is constant. XRD diffraction patterns also showed that BN had higher crystallinity and larger grain size when the sintering temperature was 1700°C and the content of BN fiber was 40%. Therefore, the best content of boron nitride fibers is in the range of 20% to 40%, and the hot pressing sintering temperature is about 1700°C.
Environmental Performance Test and Analysis of SiC/SiC Composites
Authors: Chen Mingwei , Qiu Haipeng , Xie Weijie , Zhang Bingyu
Published: November 2019

SiC/SiC ceramic matrix composites were prepared by polymer impregnation pyrolysis (PIP) process with domestic first-generation SiC fibers as reinforced phase and SiC ceramic as matrix phase. The structure and morphology of SiC ceramic matrix and SiC/SiC composites were investigated by means of XRD and SEM method. Furthermore, the mechanical properties of SiC/SiC composites after high temperature gas testing were investigated by flexural strength using three point bending testing. Results showed SiC/SiC composites have excellent mechanical properties at room temperature with bending strength of 330 MPa. However, obvious cracks and serious oxidation appeared after up to 150 hours of high temperature gas testing, and the mechanical properties dropped dramatically with the flexural strength retention rate less than 50%. The decrease of the mechanical properties and the occurrence of cracks of SiC/SiC composites were mainly attributed to the structure evolution and the oxidation intensification which might lead to instability of material properties and component structure.