bluuebunny/crossref_metadata_2025 huggingface dataset:
Cell adhesion control by photoinduced LCST shift of PNIPAAm-based brush scaffolds
Authors: Imato Keiichi , Nagata Kazuho , Watanabe Rina , Takeda Naoya
Published: February 2020

Cell adhesion was markedly regulated on spiropyran-containing PNIPAAm-based brush scaffolds by photoinduced LCST shift across a standard culture temperature.
Does geometry matter? Effect of the ligand position in bimetallic ruthenium polypyridine siblings
Authors: Domínguez Sofía E. , Pieslinger German E. , Sanchez-Merlinsky Luciano , Baraldo Luis M.
Published: February 2020

The properties of trans-[RuII(tpy)(bpy)(μ-CN)RuIII(py)4(L)]3+/4+ (L = Cl−, NCS−, DMAP or MeCN) show a transition from localized to delocalized as the ΔE between Ru ions becomes smaller.
Exchange coupled Co(ii) based layered and porous metal–organic frameworks: structural diversity, gas adsorption, and magnetic properties
Authors: Kharwar Ajit Kumar , Konar Sanjit
Published: February 2020

A co-operative ligand approach leads to beautiful two-dimensional and three-dimensional architectures with interesting magnetic properties.
Polyoxometalate-based crystalline materials as a highly sensitive electrochemical sensor for detecting trace Cr(vi)
Authors: Xin Xing , Hu Na , Ma Yuanyuan , Wang Yali , Hou Lin , Zhang Heng , Han Zhangang
Published: February 2020

{Fe(P4Mo6)2}-type phosphomolybdates with a 3D inorganic porous crystal structure exhibit efficient electrochemical activity for the determination of Cr(vi).
Atomic spectrometry update: review of advances in the analysis of clinical and biological materials, foods and beverages
Authors: Taylor Andrew , Catchpole Anthony , Day Martin P. , Hill Sarah , Martin Nicholas , Patriarca Marina
Published: February 2020

This review discusses developments in elemental mass spectrometry, atomic absorption, emission and fluorescence, XRF and LIBS, as applied to the analysis of specimens of clinical interest, foods and beverages. Sample preparation procedures and quality assurance are also included.
CO2 photoreduction to CO/CH4 over Bi2W0.5Mo0.5O6 solid solution nanotubes under visible light
Authors: Wang Yang , Liu Jiaxu , Wang Ye , Zhang Mingyi
Published: February 2020

In this work, Bi2W0.5Mo0.5O6 solid solution nanotubes have been synthesized through a structure-directing hard template approach, which demonstrated greatly enhanced CO2 photoreduction to CO/CH4.
Low complexity robust recursive beamforming for two‐way full duplex relay network
Authors: Omidkar Atefeh , Attarizi Yasser , Zayyani Hadi
Published: February 2020

In this study, a two‐way full‐duplex amplify‐and‐forward relay network is considered in which two multi‐antenna fullduplex user nodes manage to exchange their information via a full‐duplex multi‐antenna relay. The users and relay can concurrently transmit their symbols in all time slots in the same frequency band, which leads to self‐interference (SI) at all nodes. The joint beamforming algorithm is used in which the relay and users beamforming matrices are updated in each time slot to suppress the SI. This algorithm needs the channel state information (CSI) of all previous time slots, so the complexity increases as time lapses. To decrease the complexity, an algorithm is proposed in which the beamforming matrix is computed recursively. Moreover, the channel estimation error is considered when the relay and users have partial CSI. Thus, a robust algorithm, i.e. an algorithm that takes the estimation error into account is proposed to decrease the effect of estimation error. The proposed algorithm has been evaluated in terms of mean square error, achievable sum rate and BER for various values of the estimation error variances and compared with the non‐robust algorithm. The results show that the superiority of the recursive robust algorithm in terms of SNR and complexity.
Low complexity portable MIMO radar system for the characterisation of complex environments at high resolution
Authors: Harkati Lekhmissi , Abdo Ray , Avrillon Stéphane , Ferro‐Famil Laurent
Published: February 2020

This study presents the concept, design, and operation of a low‐cost and lightweight multiple‐input multiple‐output (MIMO) radar system, dedicated to the characterisation of complex volumetric environments such as snow, forest, sand etc. using synthetic aperture radar tomographic focusing. The system consists of six transmitting and six receiving antennas, operated in a multi‐static configuration, resulting in an equivalent mono‐static vertical virtual array. Antenna positions have been set considering a trade‐off between coupling effects, imaging ambiguities due to spectral folding and vertical resolution. The system also contains radio frequency signal generation and acquisition blocks and has been developed and operated at the IETR laboratory of the University of Rennes 1. An element‐orthogonal frequency division multiplexing technique is proposed that avoids the use of switches for selecting transmission and reception channels, using a specific carrier for each transmit channel, and spectral analysis of each receive channel, allowing the 36 MIMO channels to be retrieved. The use of a time‐domain back‐projection algorithm for imaging in the elevation direction provides results that confirm the potential of the system for the characterisation of complex media.
Evaluation of sustainability of microgrid grounding grid design under varying soil conditions through estimation of touch, step voltages and novel methods of earthing
Authors: Bhatia Krishnav , Darji Pranav B. , Jariwala Hitesh R.
Published: February 2020

This study examines the sustainability of uniform as well as an optimal grounding grid (GG) design for the microgrid (MG), in terms of variations in the top layer (TL), middle layer (ML), and bottom layer (BL) soil resistivities (, , and , respectively) along with change in a thickness of TL and ML. GG design is highly dependent on , as it helps in determining the density of conductors at grid extremities. With an increase in , touch voltage (TV) crosses its tolerable limit, but step voltage (SV) remains within its limit. However, with a simultaneous increase in the thickness of ML (MLT), SV also crosses its limit. For higher than , with an increase in MLT, TV, and SV increase, while in the reverse case, they decrease. For the given MLT, is crucial in determining GG burial depth. Validation of results is done by comparing them with the IEEE standard. Also, the optimal compression ratio of GG with an increase in MLT is analysed. TVs can be reduced to a great extent, with the application of distinctive methods of earthing (TT‐GG system, TN‐S‐GG system, and TN‐C‐S‐GG system) in MG. This study also reveals that an increase in GG resistance leads to a reduction in TV.
Tied-array holography with LOFAR
Authors: Salas P. , Brentjens M. A. , Bordenave D. D. , Oonk J. B. R. , Röttgering H. J. A.
Published: February 2020

Context. A radio interferometer uses time delays to maximize its response to radiation coming from a particular direction. These time delays compensate for differences in the time of arrival of the wavefront at the different elements of the interferometer, and for delays in the instrument’s signal chain. If the radio interferometer is operated as a phased array (tied array), the time delays cannot be accounted for after an observation, so they must be determined in advance.

Aims. Our aim is to characterize the time delays between the stations in the core of the LOw Frequency ARray (LOFAR).

Methods. We used radio holography to determine the time delays for the core stations of LOFAR (innermost 3.5 km). Using the multibeaming capability of LOFAR we map the voltage beam faster than with a raster scan, while simultaneously calibrating the observed beam continuously.

Results. For short radio holographic observations (60 s and 600 s) of 3C196, 3C147, and 3C48 we are able to derive time delays with errors of less than one nanosecond. After applying the derived time delays to the beamformer, the beam shows residuals of less than 20% with respect to the theoretical beam shape.

Conclusions. Tied-array holography could be a way towards semi-real-time beam calibration for the Square Kilometer Array.
Comparative analysis of plant growth risks insurance in the Eurasian Economic Union countries
Authors: Verezubova Tatyiana A. , Zhichkin Kirill A. , Mukhitbekova Assem M. , Penkin Anatoliy A. , Zhichkina Lyudmila N.
Published: February 2020

The article presents the results of a comparative analysis of the procedure for conducting compulsory insurance of crops in three states of the Eurasian Economic Union – the Russian Federation, the Republic of Belarus and the Republic of Kazakhstan. The authors analyzed the main conditions for its implementation, the differences in the regulatory framework for the provision of state support, the dynamics of key indicators of development of this type of insurance, revealed the reasons for their changes. The ways of improving the state support for crop insurance in the EAEU countries are proposed.
Milk productivity and milk quality when feeding cows with silostan-containing haylage
Authors: Karamaev Sergey V. , Karamaeva Anna S. , Valitov Khaidar Z. , Soboleva Natalya V. , Bakaeva Larisa N.
Published: February 2020

In the Middle Volga region, alfalfa is the most widely used bean fodder. In recent years, one more bean crop is used – Fodder galega. The main disadvantage of almost all legumes is low sugar content and poor haylage making abilities. To eliminate this drawback, the biological product “Silostan” was developed. It is used as a preservative. The aim of the work is to study the effect of alfalfa and Fodder galega haylage made using the bio-preservative “Silostan” on milk production and quality of milk of black and white Samara cows. The use of Silostan increased the dry matter content by 5.2 and 4.5, ECE – by 12.8 and 17.5%, and digestible protein – by 27.1 and 15, 5%. The digestibility of dry matter increased – by 3.85 and 4.38%, crude protein – by 5.68 and 5.42%, crude fat– by 4.26 and 5.26%, crude fiber by 3.86 and 4.07%. The use of haylage with bio-preservatives increased the yield of cows for 305 days of lactation by 14.6 and 16.5%. The MFF increased by 0.05 and 0.06%, MFP – by 0.07 and 0.09%, respectively. The technological properties of milk improved, the milk consumption per 1 kg of ripened cheese decreased by 4.9 and 11.2%.
Justification of the optimal annual load on the tractor providing for its parameters stress on the formed crop
Authors: Khafizov Camill A. , Khafizov Ramil N. , Nurmiev Azat A. , Galiev Ilgiz G.
Published: February 2020

The article presents the results of a study to identify the optimal value of the annual load on one tractor using direct sowing technology. The optimal annual load on one tractor is directly associated with the power provision to agriculture and, indirectly, with its productivity. The article analyzes the dependence of the annual tractor load in ploughland per ha on various factors of the tractor-operator-instrument-fieldsoil-crop system: on tractor parameters; unit; environment and it is concluded that the optimal annual load on one tractor depends on them. The method of choosing various agricultural enterprises power supply should be connected with the natural and climatic conditions of their production activities, accepted technologies for cultivating crops, soil types, field sizes, etc. It was revealed that in Russia the optimal energy supply of agriculture with the power of tractor engines, using the zero tillage technology, is in the range from 2.4 to 2.8 hp/ha.
Study of comparative antiparasitic efficacy of C-18 compound in cattle nematodirosis and eymeriosis
Authors: Lutfullin Minsagit Hayrullovich , Mingaleev Danil Nailevich , Gizzatullin Ramis Razyapovich , Timerbayeva Razaliya Rustamovna , Shangarayev Rafkat Iskandarovich
Published: February 2020

The comparative antiparasitic efficacy of the compound “C-18, “ tetramisol granutate, albendazole, diacox, and toltarox in nematodirosis and eymeriosis of cattle has been studied. Studies were carried out on forty calves of 6 months of age naturally infected with nematodiruses and on the same number of animals invaded by eimerias. The preparations were administered individually by mouth. The first group of calves was given a 1% introduction solution of 10% tetramisol granulate, the second group a 10% suspension of albendazole. The preparations were given according to the guidelines for their use. Animals in the third group received a 1% solution of C-18 on sunflower oil at a dose of 2 mg/kg. Group four served as controls. Fecal samples were taken and examined before as well as 7, 15 and 30 days after administration of the preparations. 30 days after dehelmintisation, the intencity and extensity of efficacy of the C-18 compound was found to be 95.0 and 90.0%, versus 82.9 and 60.0% for tetramisol granulate and 90.4 and 80.0% for albendazole. Studies have shown that in cattle nematodirosis, the compound “C-18” is more effective than the known preparations tetramisol granulate and albendazole. A similar pattern is established in the examination of animal feces samples 7 and 15 days after deworming. In the second series of experiments, animals of the first group naturally infected with eimerias were fed diacox by group method at a dose of 1.0 mg/kg, the second 10% toltarox suspension was administered individually orally at a dose of 0.3 ml/kg, the third 1% solution of compound “C-18” on salt oil individually orally at a dose of 2.0 mg/kg. Studies have shown that in the case of eymeriosis of cattle, intensity of efficacy in diacox 15 days after treatment was 84.0, toltarox 88.9, and compounds “C-18” 88.6%, extensity of efficacy 50.0 and 83.3%, respectively.
Improving the adaptability of apricot to abiotic environmental factors
Authors: Minin Anatolij N. , Markovskaya Galina K. , Nechaeva Elena H. , Stepanova Yuliya V. , Hohlov Nikolaj N.
Published: February 2020

As a result of many years of breeding work on interspecific and intersortial hybridization in the Samara region, 9 apricot varieties were created and submitted for state testing, of which 4 varieties were entered into the state register of the Russian Federation. In the organic dormancy phase, apricot trees of these hybrids have high frost resistance of wood and flowering buds. Favorable microzones for apricot cultivation were determined, the productivity of varieties was studied, and the fruit quality was assessed. Of the 8 years of observing apricot, six years were fruitful. Two years of harvest was absent due to freezing of flower buds from the onset of frost after prolonged thaws. Samarskij (32.2 kg from a tree), Vnuchok (43.4 kg) and Elita No. 1 (24.9 kg) sorts have high productivity. Ripening dates, weight and taste of apricot fruits depend on the variety, air temperature and the amount of precipitation. Large fruits are possessed by new varieties Avdeevskij, Andryushka, Andryushka, Bojcovyj, Seyanec Voenkomovskij. The best tastes were of the varieties Andryushka, Bojcovyj, Seyanec Voenkomovskij, Trofej (tasting score 4.5 points).
Morphological characteristics of honey bees of the Volga region
Authors: Zemskova Natalia Evgenevna , Sattarov Vener Nurullovich , Skvortsov Anatoly Ivanovich , Semenov Vladimir Grigorievich
Published: February 2020

Declining bee populations and decreasing marketability of apiaries pose the necessity for a comprehensive monitoring of the morphological characteristics of honeybees. The monitoring was performed in an introgressive aspect for the first time in the Volga region (Samara region) to preserve the local population of the Middle Russian race (Apis mellifera mellifera L.). Moreover, the race of queen bees was identified through the assessment of drones. Based on the race identification, small population structures of the native forest bee were revealed, which is a prerequisite for restoration of its genetic resources with the corresponding restriction of the import of bees from the southern regions where other taxonomic groups are bred.
Inheritance of allelic variants of the kappa-casein gene by cows
Authors: Shaidullin Radik , Sharafutdinov Gazimzyan , Moskvicheva Anastasia , Faizov Tagir , Yuldashbaev Yusupzhan
Published: February 2020

The inheritance of allelic variants of the kappa-casein gene from bulls with different genotypes and their influence on the milk production of daughters were studied. For research, PCR diagnostics of daughters in the herds of black-and-white cattle at the farms “Azeleevo” and “Vakhitovo” (OJSC “Red East Agro”) was carried out, the fathers were two bulls LADDIE 135797213 with a genotypes CSN3 AB and LOMAX 10785322 with a genotype CSN3 BB. Based on the results of genotyping, the frequency of occurrence of genotypes AA, AB, BB kappa-casein and allelic variants A and B in daughters was calculated. The bull with the CSN3 AB genotype produced the largest number of offspring with the CSN3 AA genotype 50.0-51.8 %, and the bull with the homozygous BB genotype produced 24–25 % of daughters carrying the BB variant and 75 -76 % of the AB genotype. The frequency of occurrence of the Kappa-casein allele in the daughters of bulls with the genotype CSN3 BB was 0.63, which is almost 2 times more than the allele A. When comparing heifers with the same genotype (CSN3 AB), it was found that at the Azeleevo farm, the daughters of the bulls having the genotype BB of kappa-casein are superior to cows born from bulls with the genotype AB by the milk yield (+36 kg), mass fraction of fat and protein (+0.01 %), the amount of milk fat (+2 kg) and protein (+2 kg). In the group of first-calf heifers with the BB genotype, daughters of the producer with the BB genotype are superior by the milk yield (+ 175 kg), the mass fraction of fat in milk (+0.1 %), the amount of milk fat (+12 kg), the mass fraction of protein in milk (+0.09 %), the amount of milk protein (+11 kg). At the Vakhitovo farm, similar results in the group of CSN3 AB heifers born from the bulls with the BB genotype was observed
Pharmacoprophylaxis of liver diseases: creating a new hepatoprotector
Authors: Zykova Svetlana , Shurov Sergey , Savinkov Aleksey , Gugushvili Nino , Talismanov Vladimir
Published: February 2020

The article presents a study of the hepatoprotective activity of a tricyclic heterocycle, which refers to 5, 6, 7, 8-tetrahydroquinolines. The effect of 8, 8-dimethyl-5-p-tolyl-8, 9-dihydro-2H-pyrido [4, 3, 2-de] cinnolin-3 (7H) was studied on rats under the influence of the model of toxic hepatosis induced by carbon tetrachloride to find out the indicators of peroxidation and biochemical indicators. Biochemical studies have shown that modelling toxic fat hepatosis caused by the inception of carbon tetrachloride to rats increased the activity of alanine aminotransferase by 2.5 times more compared with the intact group, indicating the development of oxidative stress induced by the treatment of pyrido [4, 3, 2] Cinnol I that reduced the toxic effect of CTC by 79.9 %. Mexidol had a less pronounced hepatoprotective effect: the activity of Alanine aminotransferase on animals of the second group was lower by 29.2 % than on rats from the control group. Thus, a new compound with hepatoprotective activity has been developed and studied.
Optimization of the main tillage in the grey forest rotation of the Predkamye region of the Republic of Tatarstan
Authors: Minikayev Rogat V. , Saifiyeva Gulia S. , Manukova Irina G.
Published: February 2020

In order to optimize the tillage system by minimizing basic tillage, eight basic tillage options for basic field crops were explored between 2011 and 2015. The highest crop yields were obtained under the fine tillage option (SSC-3) with periodic deep loosening. The yield increase compared to plowing (control) was 0.24-0.33 t/ha.
Adaptive technologies for intensification of winter wheat grain production in biologized crop rotation
Authors: Bikmukhametov Zakirzhan , Shakirov Rafil , Sabirova Razina
Published: February 2020

The studies were conducted at the experimental base of the Tatar Scientific Research Institute of Agriculture in 1996–2014 to adapt fertilizer systems and basic tillage to achieve yields of 3–5 t/ha. The article cited data on winter wheat – the second crop of the third rotation of the eight-field grain-grass-crop rotation for 2013–2014. We studied the effect of organomineral, organic, mineral fertilizer systems on the winter wheat yield using a differentiated approach to their use in combination with different primary tillage systems (dump plowing to the depth of the arable layer, multi-depth loosening and loosening to a depth of 15–16). The organomineral fertilizer system differed with the saturation with organic fertilizers of 7 t/ha of arable land per year + N36P32K60 according to the balance sheet for receiving 4 t/ha of grain with spring fertilizing using ammonium nitrate, where the yield was 4. 03 t/ha, and the saving on mineral fertilizers, depending on crop rotation and soil saturation with organic matter, was 25–35 %. The yield of winter wheat by the water-saving technology amounted to 4.03 t/ha with a planned level of 4.0 t/ha. At the same time, at the purchase price of 7 rubles/kg, the level of profitability rose to 195.85 %, the cost of 1 center of grain amounted to 236.6 rubles.
Main directions of development of agro-technologies for production of spring wheat species for sustainable agriculture in the forest-steppe of the middle Volga region
Authors: Amirov Marat , Shaikhutdinov Farit , Serzhanov Igor , Serzhanova Albina
Published: February 2020

The article presents the results of research conducted in different soil and climatic conditions of the Middle Volga region on the influence of regulated factors, as well as environmental factors on the production process of plants of various types of spring wheat. The amount of photosynthetically active radiation (PAR) is enough to obtain yields within 12–13 tons of dry biomass or 6–7 tons of grain. Natural precipitation is able to provide 3.82–4.36 t of spring wheat grain from 1 ha, and 4.5–6.3 t/ha by the total influence of solar energy, heat and moisture supply. Natural level of soil fertility without application of organic and mineral fertilizers allows to receive about 2 tons of spring wheat grain from 1 ha. Application of nitrogen in the form of ammoniac water (N-20.5 %) increased the yield in comparison with the use of nitrogen in the form of ammoniac saltpeter: the increase was 0.14 t per 1 ha. In the conditions of grey forest soil in the Predkamye region of the Republic of Tatarstan the optimal norm of sowing of spring wheat Triticum dicoccum Schuebl (spelt) depending on the feeding background was established. Growth of yield at sowing of 6 million seeds per hectare at all levels of nutrition in comparison with sowing rate of 4 million tons per hectare was 0.18 tons per hectare against the natural background, against the estimated background of NRC on 2.0 tons of grain – 0.19 tons and 2.5 tons of grain – 0.24 tons per hectare. The maximum yield increase was received at a combination of a mineral foodstuff with an optimum norm of sowing and has made on a settlement background 2 tons of grain from hectare – 0.20 tons, on 2.5 tons of grain – 0.34 tons from hectare. Thus, the aim of our research was to develop methods of growing high yielding quality grain of different types of wheat adapted to the conditions of forest-steppe in the Volga region.
Assessment of bulls by capa-casein in the conditions of the Udmurt Republic
Authors: Berezkina Galina Yu. , Kislyakova Elena M. , Vorobyeva Svetlana L. , Shkarupa Konstantin E.
Published: February 2020

In the article the analysis of bulls-producers used in the republic, depending on polymorphism on k-casein is carried out and the influence of genetic resources on the level of milk productivity, quality of milk and its dampness is determined. It has been revealed that 56 % of bulls in the republic have AA-genotype, 40 % have AB and only 4 % have BB-genotype. The highest yield for 305 days of lactation in cows with BB- and AB-genotypes 6018 and 5985 kg, respectively. Protein content in BB-cow milk was 3.15 %, which is 0.14 % higher in comparison with AA-cows (P ≥ 0.95) and AA-cows – 0.06 % higher. More than a half of all milk examined in the group of cows with BB- and AB-genotype on k-casein (90 and 85 %, respectively) had on rennet and fermentation sample I and II class. In the Udmurt Republic β-asein contains only 26 %, which also affects the quality and yield of finished products, in particular, rennet cheeses.
Recuperation of chicken litter in preparation for extrusion
Authors: Ignatiev Sergey , Khrameshin Aleksey , Khrameshin Roman , Myakishev Andrey
Published: February 2020

In the article we proposed a technological solution aimed at solving the current problems of poultry enterprises and specifically at the disposal of litter. The technology of processing litter into fertilizer was analyzed. It is proposed to combine the processes of sorption drying, high-temperature extrusion and vacuum drying in the production of the dry granulated fertilizer from litter. Studies of the sorption capacity of dried litter have shown that its moisture and granulometric properties do not affect the pattern of moisture transfer between the litter and the sorbent material.
Design adaptation of the automobile and tractor diesel engine for work on mixed vegetable-mineral fuel
Authors: Khokhlov Alexei , Khokhlov Anton , Maryin Dmitry , Molochnikov Denis , Gayaziev Ilnar
Published: February 2020

The article is devoted to the solution of the problem associated with the partial substitution of marketable mineral diesel fuel (DF) with mixed vegetable-mineral (MDF) engine fuel. The bio-component of MDF is vegetable oil, for example, Camelina seed oil. A design option of a dual-fuel feeding system has been proposed, the main component of which is a mixing and metering unit for vegetable oil and mineral diesel fuel which allows electric metering units controlled by an electronic control unit (ECU) to respond to signals from diesel load-speed sensors (crankshaft speed, injector rack position (fuel injection pump)) and temperature gauge of camelina oil, to ensure the feed of mixed diesel fuel with components of different content. The use of mixed diesel fuel based on vegetable oil, containing for example 50 % of mineral commercial fuel and 50 % of camelina oil, makes it possible with a slight decrease in the effective power (not more than 6 %) and some increase in the specific effective consumption of mixed fuel (up to 14 %) to save 50 % of fuel of petroleum origin, as well as to reduce the smoke opacity of exhaust gases by 17–20 % and reduce the content of carbon oxide by 35–40 % compared with the work of a diesel engine on commercial mineral diesel fuel.
Results of engine tests of an experimental gasoline internal combustion engine
Authors: Maryin Dmitry , Glushchenko Andrei , Khokhlov Anton , Proshkin Evgeny , Mustyakimov Rail
Published: February 2020

To improve the power and fuel and economic performance of a gasoline internal combustion engine, it has been proposed to improve the insulating properties of the piston by forming a heat-insulating coating on the working surfaces of the piston head with a thickness of 25...30 μm using the microarc oxidation method. Comparative results of engine tests are carried out, which showed that an engine equipped with pistons with a heat-insulating coating on the working surfaces of the head increases power by 5.3 % and reduces hourly fuel consumption by 5.7 % compared to an engine equipped with standard pistons.
Using Biferon-B for the prevention of mastitis in cows
Authors: Shabunin Sergey , Pashentsev Alexander , Klimov Nikolay , Morgunova Valentina , Gritsyuk Vasilina
Published: February 2020

The developed method for the prevention of mastitis in lactating cows by intramuscular injection of Biferon-B at doses of 5.0–10.0–20.0 ml, provided a preventive effect in 25.0–75.0 % of animals; the best effect was achieved with Biferon-B at a dose of 5.0 ml. The use of Biferon-B in clinically healthy lactating animals was accompanied by a decrease in blood levels of stab neutrophils by 58.8–65.0 %, circulating immune complexes by 23.4–62.6 %, with a higher content of segmented neutrophils by 4.8–7.8 %, monocytes by 5.6–57.1 %, lymphocytes by 4.9–12.3 %, total immunoglobulins by 5.7–14.3 %, bactericidal and lysozyme activity of blood serum by 6.4–23.1 % and 4.3–13.7 %, respectively. The phagocytic activity of neutrophils decreased by 5.6–10.9 %. With lower indicators of the intoxication index dropped by 12.8–19.1 %, the content of average molecular peptides by 2.4–22.6 %, nitric oxide by 24.5–45.4 %, MDA by 2.8–36.7 %; catalase activity increased by 2.7–12.8 % and GPx by 10.4–29.7 %.
Management of air flows inside steel silo during grain storage
Authors: Kechkin I. A. , Ermolaev V.A. , Romanenko A.I. , Tarakanova V.V. , Buzetti K.D.
Published: February 2020

A study was conducted concerning effects of temperature and relative air humidity during long-term storage of wheat grain in a steel silo. The study was aimed at identifying the possibility of condensed moisture appearing under the silo roof. The probable periods of condensate in the space under the silo roof depending on the temperature difference inside and outside the silo have been determined. Some ways to prevent the condensate formation are proposed in the paper.
Prediction model of microbiological and organoleptic indicators of salads during storage with the processing by extremely low frequency electromagnetic fields
Authors: Bugayets Natalia , Usatikov Sergey , Lyubimova Lyubov , Tereshchenko Igor , Shantyz Azamat , Miroshnichenko Peter
Published: February 2020

The aim of the research is the scientific justification, development and implementation of physical methods for the protection of culinary products from microbiological damage. The effect of the electromagnetic field of extremely low frequency (EMF ELF) on the expiration date of vegetable salads was studied. The effective processing parameters of the EMF ELF treatment of vegetable vinaigrette postponed its expiration date, providing high quality and safety of dishes throughout the storage period.
Cartographic assay of nozoareal bovine tuberculosis in the Republic of Tatarstan
Authors: Mingaleev Danil N. , Hisamutdinov Almaz G. , Efimova Marina A. , Trubkin Anatoly I. , Kamalieva Julia R.
Published: February 2020

The paper presents the results of studying the dynamics of the number of cattle unsuccessful for tuberculosis in the Republic of Tatarstan for the period from 2000 to 2018. As a result of the analysis of this cartogram, we found that the unsuccessful points for tuberculosis are geographically confined to a certain area: i.e. settled mainly in the south, and scattered (in small groups – “foci”) in the central part of the republic. A steady decline in the incidence of cattle with tuberculosis has been observed since 2016. By the end of 2018, no new foci of tuberculosis in the territory of the republic were identified, systematically conducted anti-epizootic measures ensure stabilization of the epizootic situation.
Electronic form of procurement in agricultural enterprises
Authors: Volkonskaya Anna , Pashkina Olga , Galenko Natalia , Kurlikov Oleg , Parsova Velta
Published: February 2020

Today in Russia the main components of digital economy are as follows: electronic trading, public services, export-import activity and constantly developing system of purchasing activity at state enterprises. The system of purchases has to conform to the requirements of modern digital technologies For this purpose at the end of 2018 the President of the Russian Federation proposed to transfer the government and corporate procurement to an electronic form. However, the analysis showed that procurement activities carried out in the form of electronic bidding in agricultural enterprises had a number of problems. These problems are related to the nature of agriculture. For example, seasonality is a key to agricultural performance. In this regard, the system of commercial transactions, including electronic trades, should be as adapted as possible to the peculiarities of agricultural production.
The results of pre-sowing conifer seeds treatment by growth stimulators
Authors: Mukhametshina Aigul , Gafiyatov Renat , Pukhacheva Lyudmila , Shaikhraziev Shamil , Akhmetov Almaz
Published: February 2020

The article studies the influence of different fertilizing products on vigor and germinating ability of Scots pine and common spruce seeds. The research involved the following products: Humate+7, Potassium humate “Sufler”, Biohumus, Agrostimul VE, Emistim-R, Gibberellin, Etamon. The soaking of seeds in products leads to an increase in vigor, on average, between 31 and 37.0 % for Scots pine and between 5 and 13.0 % for common spruce. The germinating ability of Scots pine and common spruce seeds increases, on average, by 16.0 and 17.0 % correspondingly. Among all the products the least effective was “Etamon”. In its case, the germinating ability of seeds in laboratory conditions was 53.0 % which is 10.0 % lower than in control. The treatment by stimulators significantly influenced the development of a root system. The intensive root growth happens in the cases of “Gibberellin” and “Humate+7” – 4.4 and 5 cm corresponding to the variants of the experiment. The pre-sowing treatment positively increases the length of germs. In this case, the best results were achieved with “Gibberellin” and “Biohumus” products that gave the increase of 1.7 and 1.5 cm respectively.
Assessment of the effectiveness of forest use in the Republic of Tatarstan
Authors: Sabirov Airat , Chernykh Vaiery , Mukhametshina Aigul , Gibadullin Nursil , Minnehanov Azat
Published: February 2020

As a result of the research work, the structure of the organization of forestry management in the Russian Federation and its constituent entities, acting following the new forest code of the Russian Federation in 2006, was studied. Assessment of the effectiveness of the use of forests in the republic, a multiple correlation analysis was applied. As a result, it was revealed that in the Republic of Tatarstan, the primary income for the use of forests is accounted for by timber harvesting, the bulk of which is accounted for by the use of coniferous forest areas – 81 %, soft-leaved, and hard-leaved forests accounted for 14 % and 5 %, respectively. Taking into account the share of exploitable forests for the receipt of payments from the lease of forest plots for all types of use (harvesting and collection of non-timber forest resources; hunting; farming; recreational activities; geological exploration of mineral resources; development of mineral deposits; construction, reconstruction and operation of communication lines, roads, pipelines and other linear facilities; payment for the conversion of forest land to non-forest land and the transfer of forest land to lands of other categories) in the Republic of Tatarstan, the structure of forests by farms affects, and on the contribution to payments by type of use, soft-leaved farming brings 78 %, hard-leaved 12 % and coniferous 10 %.
Effect of the antioxidant “Bisphenol-5” on the digestibility of nutrients in the diet of broilers
Authors: Shilov Valentin , Khakimova Guzaliya , Semina Olga , Akhmadullin Renat , Akhmadullina Alfiia
Published: February 2020

The addition of the antioxidant “Bisphenol-5” in the dietary feed of broiler chickens in the amount of 0.0002, 0.0004, 0.0008 and 0.0015 % of its weight contributed to the dietary nutrients digestibility enhancement, their absorbability and assimilation of nitrogen, calcium, phosphorus, which affected the increase in the intensity of animal growth. The effective dose application of the antioxidant under study in broiler raising is 0.0008 % of feed weight. Feeding of mixed fodders enriched with antioxidant at the given dosage of the third experimental bird group increased the digestibility of organic matter by 4.28 % (p ≤ 0.001), increased absorption of nitrogen, calcium, phosphorus by 1.07, 0.27, 0.2 g (p ≤ 0.001) respectively and increased average daily live weight by 13.6 % (p ≤ 0.001) compared with individuals in the control group.
Study of rheological properties of cakedough from a mixture of wheat and amaranth flour
Authors: Rustemova Ainash , Kydyraliev Nurudin , Sadigova Madina , Batyrbayeva Nurgul
Published: February 2020

The paper presents the study of rheological properties of cake dough from composite mixture of wheat and amaranth flour using Mixolab, Alveolab of CHOPIN company (France). It presents the basic parameters of rheological profile of wheat flour of the first grade “Alia” (Tokmak) and composite wheat and amaranth flour, points of index: index of water absorption, index of stability to mixing, index of gluten, index of viscidity, stability of starch oramylolytic index, index of retrogradations of starch.
Experimental evaluation of amaranth food products in terms of functional food ingredients
Authors: Stakhurlova A.A. , Derkanosova N. M. , Aristov A. V. , Ponomareva I. N. , Sutolkin A. A.
Published: February 2020

Diet correction according to the nutrition enrichment with physiologically valuable nutrients becomes one of the most important issues. Its solution is possible by inclusion in the formulation of food products of raw materials that are characterized by an increased content of deficient substances, primarily protein, dietary fiber, minerals and vitamins. The amaranth meets the criteria above. The use of amaranth processing products in food technologies makes possible to obtain specialized and functional products. In this case, better to conduct experimental confirmation of the expected effect. Studies have been conducted to evaluate the effect of grain and extrudate of whole grain of Universal Amaranth on laboratory animals. Mature male rat’s stomach, liver, and kidneys served as a study material. The results of histological studies showed an improvement in the digestive system of animals and their general condition when grain and extrude Universal Amaranth was included in the diet.
Indoor air decontamination system and reduction of microorganism emissions into the atmosphere
Authors: Shkrabak V.S. , Popov A.A. , Enikeev V.G. , Gavrikova E.I. , Shkrabak R.V.
Published: February 2020

The paper considers the effect of sanitary and hygienic condition of occupational environment, namely the factor of increased microbial contamination, on temporary disability and reduction of labor efficiency. In this regard, it is necessary to improve the methodology and technical support of disinfection methods in order to reduce labor intensity and increase the efficiency of equipment and disinfectants. The developed deflector model serves to reduce the emissions of microorganisms into the atmosphere and improves the environmental situation. The proposed design of the ultrasonic system makes it possible to improve user experience due to the possibility to control the flow rate of the working fluid and preparations. According to the results of the experiment, the disinfection agent based on hydrogen peroxide, silver salt and a furocoumarin solution in ethyl alcohol with the use of the developed ultrasonic atomizer reduced the total microbial contamination by 8 times on average.
Changes in calf productivity and resistance as a result of using the lactulose-based feed additive
Authors: Voevodina Yulia A. , Novikova Tatyana V. , Shevchuk Vladimir B. , Gnezdilova Anna I. , Fialkova Evgenia A. , Vinogradova Yulia V. , Kuzin Andrey A.
Published: February 2020

Objective: the aim of the research is to make a comprehensive assessment of the prebiotic feed additive effect on calves. The experiment was carried out in work conditions on 10 black-and-white Holstein-cross calves at the age of 2 to 32 days. To conduct the experiment, an experimental group and a test group have been formed. Each group has included five milk-fed calves at the age of 2 days and older. All the calves have been given colostrum in their first 2–4 hours after birth and then they have been fed three times a day, at regular intervals. The following methods are used: clinical, microbiological, immunological and statistical. The article describes the prebiotic lactulose-based additive effect on the intestinal microbiocenosis development in one-month old calves and presents an assessment of humoral and cellular components of natural resistance in calves. The research results show a positive effect of the lactulose-based additive on the symbiotic microflora of the gastrointestinal tract that improves the natural resistance of the body and the physiological status of animals, reduces the disease duration and contributes to an increase in weight gain. After feeding the calves with the lactulose-containing preparation during their first month of life, the weight gain of each calf in the experimental group has been 21.8 kg, or + 51 % of the initial weight and in the test group 19.0 kg, or + 41 % of the initial weight. Feeding the additive has an impact on the two components of natural resistance: serum bactericidal activity in the experimental group calves has been higher by 17.8 % and the phagocytosis activity has been higher by 30.5%, compared to the test group calves. Feeding calves with the lactulose-containing additive helps reduce the illness duration, stimulates the increase in live weight and affects the natural resistance level of newborn animals positively.
Comparative histological changes in the structure of the spleen and kidneys of experimental chickens exposed to the action of “Guidamis” as an adjuvant for vaccination against infectious bronchitis
Authors: Asrutdinova Rezilya , Zalyalov Ildar , Kirillov Evgeny , Sunagatov Fannur , Dubovoy Alexander
Published: February 2020

The article provides a histological description of the internal organs – the spleen and kidneys of chickens exposed to the action of “Guidamis” as an adjuvant. A lysate was tested as part of a sample of the vaccine PB-07 against infectious bronchitis developed by researchers of the Department of Virology and Tumor Diseases of Birds of the Russian Agricultural Academy (Lomonosov). The experiments were carried out on Lohmann Brown chickens in the conditions of the Laishev branch of “Ak Bars” Poultry Company, the Republic of Tatarstan. The prolonged action of the vaccine against infectious bronchitis and the use of “Guidamis” as an adjuvant was manifested as an increase in the proliferation and differentiation of lymphoid tissues in the numerous lymph nodes. The use of the vaccine and the adjuvant had a weak reactogenic effect. In the spleen of control chickens, hyperplasia of lymphoid tissue cells is weakly expressed. In the periarterial zone of nodules of the thymus-dependent lymphocytes, the cell density is low. In the kidneys, for fourteen days after the vaccination against infectious bronchitis using Guidamis, the moderate granular dystrophy of the epithelium, mainly of individual distal tubules, and local moderate manifestations of edema of the capsule of the renal corpuscles were observed. In the kidneys, signs of pronounced edema of the capsule cavity, significant disturbances in the patency of the tubular network caused by swelling and partial desquamation of the epithelium, as well as the presence of epithelium and protein mass in the lumen of the tubules, were observed.
Analysis of the data collection and processing system for assessing the actual reliability of domestic tractors exemplified by PJSC “Promtractor”
Authors: Vyacheslavova Olga , Parfenyeva Irina , Levina Tatyana , Klochkov Anatoly
Published: February 2020

The analysis of statistical parameters for the production of agricultural machinery and parameters characterizing the reliability and quality of domestic tractors is carried out. It is shown that the organization of a system for collecting and processing information on the reliability of products is important from the point of view of quality and reliability of tractors. The experience of creating such a system is considered as exemplified by PJSC “Promtractor”.
Improvement of the technological process of surface application of mineral fertilizers
Authors: Shemyakin A.V. , Borychev S. N. , Uspenskiy I. A. , Andreev K. P. , Terentyev V. V.
Published: February 2020

The article presents a study of centrifugal distributors. The advantages and disadvantages of their use are identified. Based on this, in order to improve technological means for the surface application of mineral fertilizers, it was proposed to develop a self-loading distributor for solid mineral fertilizers from soft containers, which in an aggregate with energy means would perform the functions of transporting mineral fertilizers to the field, loading them into the distributor bunker and their distribution over the surface of the field. It proves that the topic is relevant and is of great economic importance. This article offers a description of the device, the principle of operation and its technical characteristics. It also presents the sequential operations of the technological process: loading, transportation of fertilizers to the field and the very introduction of mineral fertilizers. The purpose is to improve the operational and technological characteristics of the self-loading fertilizer distributor, which is provided by the knives installation scheme, their shape, which allows obtaining a consistently large opening for the release of fertilizers and is equipped with a dressing grid. The proposed design and technological solution allows the distributor being selfloaded with solid mineral fertilizers packed in soft disposable containers weighing up to 1 ton, using a lift installed at the rear of the tractor frame, cutting the bottom of this container and uniform feeding of fertilizers to the spreading disc. In this case, the upper part of the cover of the soft container acts as a part of the distributor bunker, increasing its useful volume
Exogenous regulation of biological productivity of fenugreek
Authors: Savchenko Olga M. , Khazieva Firdaus M.
Published: February 2020

In the article the results of the effect on Trigonella foenum-graecum L. productivity by organic fertilizers EcoFus and Siliplant and presowing inoculation of seeds with the Rizotorphyn are presented. We investigated effect of organic-mineral fertilizers “EcoFus” and “Siliplant” and presowing inoculation by “Rhizotorphyn”. ”EcoFus” and “Siliplant” increase herb yield by 24.8 and 18.8 % compare to control. “Rhizotorphyn” increasing yield of seeds production by 32.1 % compared to control. For the first time we present the data of the study devoted to the effect of foliar treatments with micronutrients and presowing seed inoculation on the quantitative content of flavonoids in fenugreek seeds. The highest flavonoid content was found in seeds subjected to foliar treatments with a binary mixture of “EcoFus + Siliplant” (1.59 %). Work is performed under the topic of the research project No. 0576-2019-0007.
Assessment of soil sanitary parameters in cedar plantations
Authors: Khamitova Svetlana , Avdeev Yuri , Galiullin Ilfir , Popova Alexandra , Lukashevich Victor
Published: February 2020

The paper presents the results of the study of sanitary and microbiological parameters of soils in cedar plantations on the example of the Vologda Region of Russia. The statistical description of cedar plantations showed that both urban and Siberian cedar plantations in urban environments and beyond are characterized by good growth. The results of the sanitary assessment of cedar plantations showed that the largest part of them is classified as the second class. The evaluation of the gross heavy metal content of soil samples showed that the numerical values of test elements (copper, zinc, lead, cadmium, nickel, chromium, arsenic, mercury) did not exceed MPC. The analysis for the content of heavy metals in soil of cedar groves and nurseries is one of the ways to achieve sustainable development and functioning of the studied objects, to grow healthy cedar plantations. It is aimed at improving the environment of the Gryazovetskaya district of Vologda Region, as well as at modeling and development of environmental measures. On the basis of sanitary and microbiological assessment in the examined cedar groves it is recommended to carry out selective forest protection measures, to clean debris, as well as to conduct laboratory studies in order to determine soil toxicity affecting growth and development of cedar plantations.