bluuebunny/crossref_metadata_2025 huggingface dataset:
Leaf water content contributes to global leaf trait relationships
Authors: Wang Zhiqiang , Huang Heng , Wang Han , Peñuelas Josep , Sardans Jordi , Niinemets Ülo , Niklas Karl J. , Li Yan , Xie Jiangbo , Wright Ian J.
Published: September 2022

Leaf functional traits are important indicators of plant growth and ecosystem dynamics. Despite a wealth of knowledge about leaf trait relationships, a mechanistic understanding of how biotic and abiotic factors quantitatively influence leaf trait variation and scaling is still incomplete. We propose that leaf water content (LWC) inherently affects other leaf traits, although its role has been largely neglected. Here, we present a modification of a previously validated model based on metabolic theory and use an extensive global leaf trait dataset to test it. Analyses show that mass-based photosynthetic capacity and specific leaf area increase nonlinearly with LWC, as predicted by the model. When the effects of temperature and LWC are controlled, the numerical values for the leaf area-mass scaling exponents converge onto 1.0 across plant functional groups, ecosystem types, and latitudinal zones. The data also indicate that leaf water mass is a better predictor of whole-leaf photosynthesis and leaf area than whole-leaf nitrogen and phosphorus masses. Our findings highlight a comprehensive theory that can quantitatively predict some global patterns from the leaf economics spectrum.
Multi-omic brain and behavioral correlates of cell-free fetal DNA methylation in macaque maternal obesity models
Authors: Laufer Benjamin I. , Hasegawa Yu , Zhang Zhichao , Hogrefe Casey E. , Del Rosso Laura A. , Haapanen Lori , Hwang Hyeyeon , Bauman Melissa D. , Van de Water Judy , Taha Ameer Y. , Slupsky Carolyn M. , Golub Mari S. , Capitanio John P. , VandeVoort Catherine A. , Walker Cheryl K. , LaSalle Janine M.
Published: September 2022

Maternal obesity during pregnancy is associated with neurodevelopmental disorder (NDD) risk. We utilized integrative multi-omics to examine maternal obesity effects on offspring neurodevelopment in rhesus macaques by comparison to lean controls and two interventions. Differentially methylated regions (DMRs) from longitudinal maternal blood-derived cell-free fetal DNA (cffDNA) significantly overlapped with DMRs from infant brain. The DMRs were enriched for neurodevelopmental functions, methylation-sensitive developmental transcription factor motifs, and human NDD DMRs identified from brain and placenta. Brain and cffDNA methylation levels from a large region overlappingmir-663correlated with maternal obesity, metabolic and immune markers, and infant behavior. ADUX4hippocampal co-methylation network correlated with maternal obesity, infant behavior, infant hippocampal lipidomic and metabolomic profiles, and maternal blood measurements ofDUX4cffDNA methylation, cytokines, and metabolites. We conclude that in this model, maternal obesity was associated with changes in the infant brain and behavior, and these differences were detectable in pregnancy through integrative analyses of cffDNA methylation with immune and metabolic factors.
Differential dysregulation of granule subsets in WASH-deficient neutrophil leukocytes resulting in inflammation
Authors: Johnson Jennifer L. , Meneses-Salas Elsa , Ramadass Mahalakshmi , Monfregola Jlenia , Rahman Farhana , Carvalho Gontijo Raquel , Kiosses William B. , Pestonjamasp Kersi , Allen Dale , Zhang Jinzhong , Osborne Douglas G. , Zhu Yanfang Peipei , Wineinger Nathan , Askari Kasra , Chen Danni , Yu Juan , Henderson Scott C. , Hedrick Catherine C. , Ursini Matilde Valeria , Grinstein Sergio , Billadeau Daniel D. , Catz Sergio D.
Published: September 2022

Dysregulated secretion in neutrophil leukocytes associates with human inflammatory disease. The exocytosis response to triggering stimuli is sequential; gelatinase granules modulate the initiation of the innate immune response, followed by the release of pro-inflammatory azurophilic granules, requiring stronger stimulation. Exocytosis requires actin depolymerization which is actively counteracted under non-stimulatory conditions. Here we show that the actin nucleator, WASH, is necessary to maintain azurophilic granules in their refractory state by granule actin entrapment and interference with the Rab27a-JFC1 exocytic machinery. On the contrary, gelatinase granules of WASH-deficient neutrophil leukocytes are characterized by decreased Rac1, shortened granule-associated actin comets and impaired exocytosis. Rac1 activation restores exocytosis of these granules. In vivo, WASH deficiency induces exacerbated azurophilic granule exocytosis, inflammation, and decreased survival. WASH deficiency thus differentially impacts neutrophil granule subtypes, impairing exocytosis of granules that mediate the initiation of the neutrophil innate response while exacerbating pro-inflammatory granule secretion.
The use of non-steroidal anti-inflammatory drugs (NSAIDs) in COVID-19
Authors: Kushner Pamela , McCarberg Bill H. , Grange Laurent , Kolosov Anton , Haveric Anela Lihic , Zucal Vincent , Petruschke Richard , Bissonnette Stephane
Published: September 2022

Early in the COVID-19 pandemic, anecdotal reports emerged suggesting non-steroidal anti-inflammatory drugs (NSAIDs) may increase susceptibility to infection and adversely impact clinical outcomes. This narrative literature review (March 2020–July 2021) attempted to clarify the relationship between NSAID use and COVID-19 outcomes related to disease susceptibility or severity. Twenty-four relevant publications (covering 25 studies) reporting original research data were identified; all were observational cohort studies, and eight were described as retrospective. Overall, these studies are consistent in showing that NSAIDs neither increase the likelihood of SARS-CoV-2 infection nor worsen outcomes in patients with COVID-19. This is reflected in current recommendations from major public health authorities across the world, which support NSAID use for analgesic or antipyretic treatment during COVID-19. Thus, there is no basis on which to restrict or prohibit use of these drugs by consumers or patients to manage their health conditions and symptoms during the pandemic.
Solar and wind power data from the Chinese State Grid Renewable Energy Generation Forecasting Competition
Authors: Chen Yongbao , Xu Junjie
Published: September 2022

Accurate solar and wind generation forecasting along with high renewable energy penetration in power grids throughout the world are crucial to the days-ahead power scheduling of energy systems. It is difficult to precisely forecast on-site power generation due to the intermittency and fluctuation characteristics of solar and wind energy. Solar and wind generation data from on-site sources are beneficial for the development of data-driven forecasting models. In this paper, an open dataset consisting of data collected from on-site renewable energy stations, including six wind farms and eight solar stations in China, is provided. Over two years (2019–2020), power generation and weather-related data were collected at 15-minute intervals. The dataset was used in the Renewable Energy Generation Forecasting Competition hosted by the Chinese State Grid in 2021. The process of data collection, data processing, and potential applications are described. The use of this dataset is promising for the development of data-driven forecasting models for renewable energy generation and the optimization of electricity demand response (DR) programs for the power grid.
A population-based cohort study of the epidemiology of light-chain amyloidosis in Taiwan
Authors: Hou Hsin-An , Tang Chao-Hsiun , Goh Choo Hua , Shen Shih-Pei , Huang Kuan-Chih , Qiu Hong , Siggins Sarah , Rothwell Lee Anne , Liu Yanfang
Published: September 2022

The incidence rate of AL (light-chain) amyloidosis is not known in Asia. We conducted a retrospective cohort study using the Taiwan National Healthcare Insurance Research database and Death Registry to estimate incidence and all-cause case fatality rates, and characteristics of patients with AL amyloidosis in Taiwan. All patients with confirmed, newly diagnosed AL amyloidosis from 01-Jan-2016 until 31-Dec-2019 were enrolled and followed up until dis-enrolment, death or study end (31-Dec-2019). There were 841 patients with newly diagnosed AL amyloidosis with median age of 61.4 years and 58.7% were men. At diagnosis, cardiac, renal and liver-related diseases were present in 28.54%, 23.19% and 2.14% of patients, respectively. AL amyloidosis age-adjusted annual incidence was 5.73 per million population in 2016 and 5.26 per million population in 2019. All-cause case fatality ranged from 1.7 to 2.9% over the study period and was highest (~10%) in patients ≥ 80 years. Survival was significantly lower in patients with co-morbid cardiac, renal, or liver-related diseases which could indicate organ involvement. The incidence of AL amyloidosis in Taiwan appears to be similar to Western countries. The poor prognosis in patients with co-morbid diseases highlights the need for earlier diagnosis.
Interacting humans use forces in specific frequencies to exchange information by touch
Authors: Colomer C. , Dhamala M. , Ganesh G. , Lagarde J.
Published: September 2022

Object-mediated joint action is believed to be enabled by implicit information exchange between interacting individuals using subtle haptic signals within their interaction forces. The characteristics of these haptic signals have, however, remained unclear. Here we analyzed the interaction forces during an empirical dyadic interaction task using Granger–Geweke causality analysis, which allowed us to quantify the causal influence of each individual’s forces on their partner’s. We observed that the inter-partner influence was not the same at every frequency. Specifically, in the frequency band of [2.15–7] Hz, we observed inter-partner differences of causal influence that were invariant of the movement frequencies in the task and present only when information exchange was indispensable for task performance. Moreover, the inter-partner difference in this frequency band was observed to be correlated with the task performance by the dyad. Our results suggest that forces in the [2.15–7] Hz band constitute task related information exchange between individuals during physical interactions.
First report of the blood-feeding pattern in Aedes koreicus, a new invasive species in Europe
Authors: Montarsi Fabrizio , Rosso Fausta , Arnoldi Daniele , Ravagnan Silvia , Marini Giovanni , Delucchi Luca , Rosà Roberto , Rizzoli Annapaola
Published: September 2022

Aedes koreicus is an invasive mosquito species which has been introduced into several European countries. Compared to other invasive Aedes mosquitoes, little is known of its biology and ecology. To determine Ae. koreicus’ vectorial capacity, it is essential to establish its feeding patterns and level of anthropophagy. We report on the blood-feeding patterns of Ae. koreicus, examining the blood meal origin of engorged females and evaluating the influence of different biotic and abiotic factors on feeding behavior. Mosquitoes were collected in 23 sites in northern Italy by manual aspiration and BG-sentinel traps; host availability was estimated by survey. The source of blood meals was identified using a nested PCR and by targeting and sequencing the cytochrome c oxidase subunit I gene. In total, 352 Ae. koreicus engorged females were collected between 2013 and 2020 and host blood meals were determined from 299 blood-fed mosquitoes (84.9%). Eleven host species were identified, with the highest prevalences being observed among roe deer (Capreolus capreolus) (N = 189, 63.2%) and humans (N = 46, 15.4%). Blood meals were mostly taken from roe deer in forested sites and from humans in urban areas, suggesting that this species can feed on different hosts according to local abundance. Two blood meals were identified from avian hosts and one from lizard. Ae. koreicus’ mammalophilic feeding pattern suggests that it may be a potential vector of pathogens establishing transmission cycles among mammals, whereas its role as a bridge vector between mammals and birds could be negligible.
Two types of charge order with distinct interplay with superconductivity in the kagome material CsV3Sb5
Authors: Gupta Ritu , Das Debarchan , Mielke Charles , Ritz Ethan T. , Hotz Fabian , Yin Qiangwei , Tu Zhijun , Gong Chunsheng , Lei Hechang , Birol Turan , Fernandes Rafael M. , Guguchia Zurab , Luetkens Hubertus , Khasanov Rustem
Published: September 2022

The kagome metals of the family AV3Sb5, featuring a unique structural motif, harbor an array of intriguing phenomena such as chiral charge order and superconductivity. CsV3Sb5 is of particular interest because it displays a double superconducting dome in the region of the temperature-pressure phase diagram where charge order is still present. However, the microscopic origin of such an unusual behavior remains an unsolved issue. Here, to address it, we combine high-pressure, low-temperature muon spin relaxation/rotation with first-principles calculations. We observe a pressure-induced threefold enhancement of the superfluid density, which also displays a double-peak feature, similar to the superconducting critical temperature. This leads to three distinct regions in the phase diagram, each of which features distinct slopes of the linear relation between superfluid density and the critical temperature. These results are attributed to a possible evolution of the charge order pattern from the superimposed tri-hexagonal Star-of-David phase at low pressures (within the first dome) to the staggered tri-hexagonal phase at intermediate pressures (between the first and second domes). Our findings suggest a change in the nature of the charge-ordered state across the phase diagram of CsV3Sb5, with varying degrees of competition with superconductivity.
Performance comparison of distinct bismuth molybdate single phases for asymmetric supercapacitor applications
Authors: Shunmughananthan Bagavathy , Dheivasigamani Thangaraju , Sthevan Kovil Pitchai Jesman , Periyasamy Sivakumar
Published: September 2022

Synthesis of three distinct Bi2MoxOy phases (Bi2Mo3O12, Bi2Mo2O9, and Bi2MoO6) using the gel matrix method for high-performance asymmetric supercapacitors.
High-surface-area activated carbon from pine cones for semi-industrial spray deposition of supercapacitor electrodes
Authors: Nordenström Andreas , Boulanger Nicolas , Iakunkov Artem , Li Gui , Mysyk Roman , Bracciale Gaetan , Bondavalli Paolo , Talyzin Alexandr V.
Published: September 2022

Activated carbon (AC) with extremely high surface area (∼3000 m2 g−1) was prepared starting from pine cones as a precursor and used as a main part of aqueous dispersions for spray and blade deposition of supercapacitor electrodes.
Tailoring the interaction between a gold nanocluster and a fluorescent dye by cluster size: creating a toolbox of range-adjustable pH sensors
Authors: Pyo Kyunglim , Matus María Francisca , Malola Sami , Hulkko Eero , Alaranta Johanna , Lahtinen Tanja , Häkkinen Hannu , Pettersson Mika
Published: September 2022

Creating a toolbox of range adjustable pH sensors by tailoring the size and understanding the protonation behaviour of ultrasmall atomically precise gold nanoclusters.
Enhanced dual photo/thermal initiating systems for preparation of few layer graphene filler-based composites and 3D printing
Authors: Ma Qiang , Schmitt Michael , Zhang Yijun , Schrodj Gautier , Vidal Loïc , Collanges Elea , Begin Dominique , Lalevée Jacques
Published: September 2022

The photopolymerization synergistic thermal polymerization process has been successfully applied in the preparation of very opaque composites.
Correction: Nano copper(i) oxide/zinc oxide catalyzed N-arylation of nitrogen-containing heterocycles with aryl halides and arylboronic acids in air
Authors: Hosseini-Sarvari Mona , Moeini Fatemeh
Published: September 2022

Correction for ‘Nano copper(i) oxide/zinc oxide catalyzed N-arylation of nitrogen-containing heterocycles with aryl halides and arylboronic acids in air’ by Mona Hosseini-Sarvari et al., RSC Adv., 2014, 4, 7321–7329, https://doi.org/10.1039/C3RA46548A.
Protein quaternary structures in solution are a mixture of multiple forms
Authors: Marciano Shir , Dey Debabrata , Listov Dina , Fleishman Sarel J. , Sonn-Segev Adar , Mertens Haydyn , Busch Florian , Kim Yongseok , Harvey Sophie R. , Wysocki Vicki H. , Schreiber Gideon
Published: September 2022

Comparing the different methods for determining oligomerization composition of a protein in solution at different concentrations. The ruler of μg ml−1 represents protein concentrations applicable for the different methods.
A bis-NHC–CAAC dimer derived dicationic diradical
Authors: Nayak Mithilesh Kumar , Sarkar Pallavi , Elvers Benedict J. , Mehta Sakshi , Zhang Fangyuan , Chrysochos Nicolas , Krummenacher Ivo , Vijayakanth Thangavel , Narayanan Ramakirushnan Suriya , Dolai Ramapada , Roy Biswarup , Malik Vishal , Rawat Hemant , Mondal Abhishake , Boomishankar Ramamoorthy , Pati Swapan K. , Braunschweig Holger , Schulzke Carola , Ravat Prince , Jana Anukul
Published: September 2022

A dicationic diradical has been synthesized from the N,N′- trans-1,4-cyclohexylene bridged bis-NHC–CAAC dimer.
Lithium recovery from geothermal brine – an investigation into the desorption of lithium ions using manganese oxide adsorbents
Authors: Herrmann Laura , Ehrenberg Helmut , Graczyk-Zajac Magdalena , Kaymakci Elif , Kölbel Thomas , Kölbel Lena , Tübke Jens
Published: September 2022

Spinel type lithium manganese oxides (LMOs) are promising adsorption materials for selective recovery of lithium from salty brines.
Predefined‐time distributed event‐triggered algorithms for resource allocation
Authors: Shi Xiasheng , Xu Lei , Yang Tao
Published: September 2022

The resource allocation problem in a distributed multi‐agent system is considered in this study. First, the authors develop a predefined‐time distributed algorithm and analyse its convergence analysis using the Lyapunov stability theory, in which the local constraint is ensured by a differential projection operator. Thus, a predefined time is obtained by a time‐varying time‐based generator. Second, to reduce the communication consumption between agents, the authors develop a static as well as a dynamic‐based event‐triggered control scheme, where the information broadcast only occurs at some discrete time instants. Moreover, the three proposed algorithms converge precisely to the global optimal solution. Besides, the Zeno behaviour is excluded in the above static and dynamic event‐triggered mechanisms. Finally, the authors test the proposed algorithms' efficiency based on the provided numerical examples.
Fixed‐latency architecture for multi‐stage algebraic interleavers in interleave division multiple access systems
Authors: Kong Byeong Yong
Published: September 2022

In this letter, a fixed‐latency interleaver architecture is proposed for interleave division multiple access (IDMA) systems. The existing multi‐stage algebraic interleaver suffers from the high latency originated from a series of multipliers and adders residing in each stage. In contrast, the proposed interleaver employs a simple conversion logic built by precomputing all the requisites in advance. Since the logic is completely irrelevant to the number of stages, the interleaving pattern of the proposed structure can be randomized as much as it is needed without exacerbating the latency at all.
Entropy weight and grey relational analysis based virtual capacitance collaborative control for multiple energy storage units
Authors: Wang Hui , Zhao Shuqiang , Meng Jianhui , Tian Yanjun , Sun Yuhan , Wang Kairang
Published: September 2022

Flexible virtual capacitance control (FVCC) for converter can improve the stability and dynamics of DC bus voltage, but among multiple converters, essential inertia distribution is capable of optimizing the performance. To improve the rationality of inertia distribution, a virtual capacitance collaborative control (VCCC) strategy for multiple energy storage units (ESUs) is proposed. Firstly, the system required total inertia is adjusted according to each individual battery's rated capacity and state‐of‐charge (SOC). Then comes the establishment of an evaluation mechanism, which takes the accounts of battery SOC margin, converter power margin and battery power regulation speed. The entropy weight and grey relational analysis are used to calculate each ESU's distribution coefficient and then adjust their virtual capacitance in real‐time. The results show that the adjustment and distribution of the total inertia are beneficial to controlling the SOC of the batteries within the safe range. The ESU with the smallest converter power margin or the slowest battery power regulation speed supports least virtual inertia, which can reduce the problems such as overload protection action or auxiliary power limitation, so as to improve the cooperative control effects. Finally, the effectiveness of the proposed control strategy is verified by hardware‐in‐the‐loop (HIL) simulation experiments.
Fast time optical variability in Be/X-ray binaries
Authors: Reig P. , Fabregat J.
Published: September 2022

Context. Classical Be stars, regardless of spectral subtype, display multi-periodic light modulations in the frequency range 0.1–12 c d−1 when observed with a high cadence and a long duration. This behavior is attributed to non-radial pulsations and/or the rotation of the Be star. A similar study on the optical counterparts to Be/X-ray binaries is yet to be carried out.

Aims. The main goal of this work is to investigate the fast photometric variability of the optical counterparts to Be/X-ray binaries and compare the general patterns of such variability with the Galactic population of classical Be stars.

Methods. The main core of our analysis is based on space-based observations performed by TESS. We analyzed 21 sources with TESS. High-cadence photometry with two ground-based telescopes was also performed for 15 sources. The TESS light curves were created from the full-frame images using the Lightkurve package. The ground-based light curves were obtained through differential photometry between the target and a number of non-variable stars in the same field of view. Standard Fourier analysis and least-squares fitting methods were employed in the frequency analysis.

Results. All sources exhibit intra-night light variations with intensity variations of 0.01–0.06 mag in the ground-based observations and up to 5% in flux in TESS observations. This variability manifests itself as multi-periodic signals in the frequency range 0.2–12 c d−1. We find that the patterns of variability of the Be stars in Be/X-ray binaries agree with that of classical early-type Be stars in terms of the general shape of the periodograms. Based on the general shape and number of peaks in the periodograms, Be/X-ray binaries can be classified into different types. The most common case is the presence of groups of closely spaced frequencies (67%), followed by sources that exhibit isolated signals (18%). The remaining source type displays frequency spectra characterized by a mixed pattern of stochastic variability and high-frequency peaks.

Conclusions. This study reveals that short-term optical photometric variability is a very common, if not ubiquitous, feature intrinsic to the Be optical companions in Be/X-ray binaries. This variability is mainly attributed to pulsations that originate in the stellar interior.
Phase curve and geometric albedo of WASP-43b measured with CHEOPS, TESS, and HST WFC3/UVIS
Authors: Scandariato G. , Singh V. , Kitzmann D. , Lendl M. , Brandeker A. , Bruno G. , Bekkelien A. , Benz W. , Gutermann P. , Maxted P. F. L. , Bonfanti A. , Charnoz S. , Fridlund M. , Heng K. , Hoyer S. , Pagano I. , Persson C. M. , Salmon S. , Van Grootel V. , Wilson T. G. , Asquier J. , Bergomi M. , Gambicorti L. , Hasiba J. , Alibert Y. , Alonso R. , Anglada G. , Bárczy T. , Barrado y Navascues D. , Barros S. C. C. , Baumjohann W. , Beck M. , Beck T. , Billot N. , Bonfils X. , Broeg C. , Cabrera J. , Collier Cameron A. , Csizmadia Sz. , Davies M. B. , Deleuil M. , Deline A. , Delrez L. , Demangeon O. , Demory B.-O. , Erikson A. , Fortier A. , Fossati L. , Gandolfi D. , Gillon M. , Güdel M. , Isaak K. G. , Kiss L. L. , Laskar J. , Lecavelier des Etangs A. , Lovis C. , Magrin D. , Nascimbeni V. , Olofsson G. , Ottensamer R. , Pallé E. , Parviainen H. , Peter G. , Piotto G. , Pollacco D. , Queloz D. , Ragazzoni R. , Rando N. , Rauer H. , Ribas I. , Santos N. C. , Ségransan D. , Serrano L. M. , Simon A. E. , Smith A. M. S. , Sousa S. G. , Steller M. , Szabó Gy. M. , Thomas N. , Udry S. , Ulmer B. , Walton N.
Published: September 2022

Context. Observations of the phase curves and secondary eclipses of extrasolar planets provide a window onto the composition and thermal structure of the planetary atmospheres. For example, the photometric observations of secondary eclipses lead to the measurement of the planetary geometric albedo, Ag, which is an indicator of the presence of clouds in the atmosphere.

Aims. In this work, we aim to measure the Ag in the optical domain of WASP-43b, a moderately irradiated giant planet with an equilibrium temperature of ~1400 K.

Methods. For this purpose, we analyzed the secondary eclipse light curves collected by CHEOPS together with TESS along with observations of the system and the publicly available photometry obtained with HST WFC3/UVIS. We also analyzed the archival infrared observations of the eclipses and retrieve the thermal emission spectrum of the planet. By extrapolating the thermal spectrum to the optical bands, we corrected for the optical eclipses for thermal emission and derived the optical Ag.

Results. The fit of the optical data leads to a marginal detection of the phase-curve signal, characterized by an amplitude of 160 ± 60 ppm and 80−50+60 ppm in the CHEOPS and TESS passbands, respectively, with an eastward phase shift of ~50° (1.5σ detection). The analysis of the infrared data suggests a non-inverted thermal profile and solar-like metallicity. The combination of the optical and infrared analyses allows us to derive an upper limit for the optical albedo of Ag< 0.087, with a confidence of 99.9%.

Conclusions. Our analysis of the atmosphere of WASP-43b places this planet in the sample of irradiated hot Jupiters, with monotonic temperature-pressure profile and no indication of condensation of reflective clouds on the planetary dayside.
On the designing method for express assessment of the state of winter crops in the process of their overwintering
Authors: Feklistov A. , Yudaev I. , Volobuev S. , Daus Yu. , Panchenko V.
Published: September 2022

Winter crops, having high yields in comparison with spring crops, determine the overall grain harvest, thereby providing significant contribution to strengthening the country's food security. But at the same time, climatic metamorphoses of recent years seriously affect the preliminary forecast of the amount of collected products and its final result. Therefore, the problem of current control over the safety of cereals cultivated using the technology of winter sowing is very acute today. The review of existing control methods in the autumn-winter-spring period shows that almost all methods are laborious, time-consuming, many are the result of a visual subjective assessment, there is no possibility of express assessment of the state of plants in the place where cultivated crops grow. Analysis of the mechanism of intracellular processes under plant tissue exposure to negative temperature allows saying that intracellular changes occur in it, leading to a change in the electrical conductivity of the "intercellular substance and cell contents" solution. Based on the already used methods for assessing the physiological state of plants by measuring the resistance of plant tissue, it was decided to use the same approach to create algorithm for the functioning and technical means for monitoring the winter hardiness of cultivated crops. Conducted studies have shown that the electrical resistance of plant tissue has a systematically repeating nonlinear character during freezing and thawing during measurement. Resistance measurements must be carried out at different frequencies, but due to the limited capabilities of measuring instruments to measure the high resistance of plant tissue, preference should be given to frequencies from 0.5 kHz and higher.
Persistence factors and antibiotic susceptibility of enterobacteria isolated from various animal species
Authors: Ermakov Vladimir , Titov Nikolai
Published: September 2022

During the study, we isolated 575 strains of enterobacteria from various animal species belonging to the genus Escherichia, Shigella, Salmonella, Klebsiella, Proteus, Providencia, Hafnia, Morganella, Enterobacter, Citrobacter, Serratia, Erwinia, Kluyvera, Yersinia. In farm animals, the amount of transient pathogenic enterobacteria Salmonella enteritidis and Yersinia enterocolitica did not exceed 0.22-0.12%. Among wild animals, the proportion of pathogenic Salmonella enteritidis and Yersinia enterocolitica did not exceed 0.24-0.11%, while Shigella dysenteriae and Shigella flexneri were isolated at a low concentration of 0.01%. In the feces of zoo animals, the amount of Salmonella enteritidis and Yersinia enterocolitica did not exceed 0.21-0.10%, while Shigella dysenteriae and Shigella flexneri were detected at the level of 0.01% of the total concentration of enterobacteria. The share of Salmonella enteritidis and Yersinia enterocolitica in domestic animals did not exceed 0.012-0.04%. Persistence factors in Salmonella enteritidis, Shigella dysenteriae and Shigella flexneri, Klebsiella oxytoca, and Yersinia enterocolitica were observed to be the highest among all isolated enterobacteria. Enterobacteria showed high resistance to benzylpenicillin from the group of natural penicillins to streptomycin, cephalothin from the group of cephalosporins of the first generation, polymyxin B, ofloxacin (tarivid), and metronidazole. Carbenicillin from the group of carboxypenicillins and piperacillin from the group of ureidopenicillins, kanamycin, amikacin, and gentamicin, cefepime from the group of IV generation cephalosporins, tetracycline, doxycycline and chloramphenicol, nalidixic acid, trimethoprim showed the highest antimicrobial activity against all cultures of enterobacteria isolated in this study.
Implementation of rural economy sustainable development policy
Authors: Sitdikova Landysh , Mukhametgaliev Farit , Khismatullin Marcel , Zakirova Farida , Mikhailova Lilia
Published: September 2022

The rural economy in modern conditions of the country’s food security doctrine and import substitution policy is one of the main directions of socio-economic development of any society. The problems of sustainable development of the rural economy and the increase in growth indicators of the subjects of agrarian business are particularly interesting as a fundamental direction that ensures the socioeconomic stability in rural areas. The paper is identifies modern systemic issues that restrain the implementation of the sustainable development policy of the rural economy, and develops priority directions to ensure the efficiency of the agricultural sector of the economy in modern conditions of external and internal socio-political challenges. The paper contains the results of the analysis of volumetric indicators and growth rates of agricultural production, the level of performance of the state target program indicators for recent years, identifies the development trends, priority directions that ensure the efficiency of the rural economy, proposes organizational and economic measures to guarantee the production growth and increase the efficiency of agrarian production, intensify investment activities and strengthen state support for the rural economy.
Effect of Mephosphonee on methane generation in organic waste processing
Authors: Gayfullin I Kh , Ziganshin B G , Safiullin I N , Ivanov B L , Khusainov R K
Published: September 2022

The purpose of the study is to determine an effective technological method for the complete anaerobic processing of agricultural waste. It also aims to create and implement an effective technological method of sufficiently complete anaerobic processing of agricultural waste, including taking into account biologically active additives. A new technology for the disposal of organic agricultural waste and the influence of Mephosphone on the process of methane formation using a biogas unit at a processing facility developed at Kazan State Agrarian University is considered. The results of theoretical and experimental studies are presented, which made it possible to significantly reduce the utilization time, and reduce the cost of electricity and fuel. The experiments were carried out in a low-capacity biogas unit (LCBU) without air access in a heat-insulated reactor filled by 2/3. The results of numerical studies of the products of conversion of cattle manure are presented. Manure was kept in the reactor for 7 days. The use of Mephosphone in ultra-low concentrations (10-4) made it possible to obtain a useful product in the form of high-quality organic biofertilizer and biogas. The results of microbiological analysis of experiments in the test center of the Tatar Interregional Veterinary Laboratory are shown.
To develop a methodology for finding the competencies of agricultural workers with a positive economic return
Authors: Aletdinova Anna , Kapelyuk Zoya , Drozdova Marina , Gorodkova Svetlana
Published: September 2022

The paper describes a study by the example of processing the results of a survey of 200 employees of the agro-industrial complex on psychological tests, work experience and salary level. The authors identified the following groups of competencies: intellectual and educational, communicative, motivational and volitional, management. 15 psychological tests were used to assess their presence in respondents. After correlation and variance analyses, a statistically significant model of the dependence of the wage level on 12 indicators was obtained: ability and readiness for self-development and self-education, tolerance, high motivation for success, self-actualization of personality, strong interest in professional development, focus on interaction, high level of emotional intelligence. At the same time, it can be used in research only for the agricultural complex at the current time, i.e., at the beginning of the sixth technological order.
Influence of the evenness of seeding using a disk-cell seeding mechanism on the productivity of scarlet amaranth
Authors: Artamonov Evgeny I. , Zhiltsov Sergey N. , Erzamaev Maxim P. , Sazonov Dmitry S. , Prikazcnikov Maxim S. , Cherkashin Nikolai A.
Published: September 2022

The paper presents the results of a field study of the effect of the evenness of seeding using a disk-cell seeding mechanism on the fresh yield and Scarlet amaranth grain of Kinelsky 254 variety. The problem of the amaranth evenness of seeding was solved by developing an experimental seeder of precision sowing for small-seeded crops. Field experiments were carried out on the fields of the Volga Research Institute of Selection and Seed Production named after P. N. Konstantinovin 2019-2021. To control the qualitative parameters of sowing, amaranth was sown with ballast (blind seeds) with a VS-4.2 vegetable seeder. The study revealed that the evenness of seed distribution in a row during sowing with an experimental seeder was 22%, for plants – 24.6%, control – 24.6 and 72.1%, respectively. The use of an experimental seeder made it possible to sow in accordance with agrotechnical requirements and create the best conditions for plant nutrition, which led to an increase in the fresh yield of Scarlet amaranthof Kinelsky 254 variety by 2.6 times, grain – by 1.6 times.
Accounting of heavy metals in agricultural land use
Authors: Geraskin Mikhail Mikhailovich , Bakanova Zhanna Nikolaevna , Kargin Vasily Ivanovich , Ivanova Natalia Nikolaevna , Neyaskin Nikolay Nikolaevich
Published: September 2022

People use many chemicals in their economic activities, which leads to the fact that they become involved in a cycle of anthropogenic transformations of the environment. It was proved that microelements and heavy metals are the most toxic among pollutants. Microelements in the arable layer of the soil depend on the type of soils, their location and content in soil-forming rocks. The studies revealed that the content of heavy metals in the soil in all cases is lower than the APC (MPC). The products obtained in the test areas are safe in relation to the content of heavy metals. Adaptive landscape farming systems can serve as an additional and significant step in optimizing the environmental situation when the soils are contaminated with heavy metals.
Modeling the efficiency of the use of production potential
Authors: Bondina Natalia , Bondin Igor , Pavlova Irina , Mamai Oksana
Published: September 2022

The efficiency of modern agricultural business depends on many economic factors, the key driver of which is the production potential. At the level of certain business entities, this is the maximum possible output of the finished product in the conditions of the achieved volume of production factors (labor, capital, land). The problems of stabilization and further production increase in the agro-industrial complex of Russia require an increase in the efficiency of the use of production potential by all participants in the agricultural business. At the same time, the major impact of digital transformation on all sectors of the country’s economy changes the already established models of managing the production potential thus adapting them to modern information technologies. Therefore, in the current economic conditions, the success of the agribusiness entities largely depends on the ability to calculate, model the efficiency of the production potential use. The construction of an economic and mathematical model and the practical use of its results allows optimizing the production, material, personnel components of the production potential to ensure the maximum volume of finished products and achieve the best performance indicators.
Application of special lubricating compositions to increase the efficiency of friction surface run-in
Authors: Zhiltsov Sergey N. , Cherkashin Nikolay A. , Guzhin Igor N. , Prikazchikov Maxim S. , Khokhlov Alexey L.
Published: September 2022

The paper presents the results of laboratory studies of a number of additives introduced during operation to motor oil of internal combustion engines. It also evaluates their impact on tribological characteristics of friction pairs. It was found that all studied additives have a positive effect on the running-in quality. Reduced wear of friction pairs, reduced surface roughness compared to base motor oil is determined. The best indicators were recorded with the FENOM additive. The decrease in wear was 46% and roughness – 23.5% compared to the base oil.
Retrospective diagnosis of intrauterine diselementosis in newborn calves
Authors: Safonov Vladimir , Salimzade Emil , Ermilova Tatiana , Chernitskiy Anton
Published: September 2022

One of the methods in diselementosis diagnosis, i.e. in determination of the trace elements content excess, deficiency or imbalance in the organism, is screening the hair elemental composition. It is known that the tail brush hair growth in cattle begins from the 7th month of gestation. The authors suggested that the tail brush hair elemental composition in newborn calves could be used for integral evaluation of the trace elements supply to the fetus in the last months of its intrauterine development. In order to elaborate criteria for retrospective diagnosis of the intrauterine diselementosis, 125 clinically healthy 1-day-old calves (67 male and 58 female animals) were examined; they were obtained from Simmental cows with a physiological course of gestation under biogeochemical conditions of the Central Black Earth region of the Russian Federation. The concentration of 11 essential (Co, Cr, Cu, Fe, I, Li, Mn, Se, Si, V, Zn) and 8 toxic (As, B, Cd, Hg, Ni, Pb, Sn, Sr) trace elements were studied in samples of unpigmented guard hairs from the animal tail brush by inductively coupled plasma mass spectrometry (Nexion 300D, Perkin Elmer, USA). The results were expressed as mean ± standard error of mean, median, minimum, and maximum. Reference values of essential and toxic trace elements concentration in the hair of newborns were determined using the percentile scales separately for the groups of male and female animals. Group comparison was conducted using the independent samples Mann-Whitney U test. Research results demonstrated that physiologically determined the range of the trace elements concentration in the hair of newborn calves corresponded to the interval between the 25th and 75th percentiles. Values beyond the specified interval boundaries were proposed to be considered as deviations corresponding to the diselementosis.
Impact of developed ruminant feed products on the surrounding ecosystem
Authors: Kondrashova Kristina , Inchagova Ksenia , Ryazanov Vitaly , Duskaev Galimzhan
Published: September 2022

The use of feed additives based on the so-called “phytobiotics” and a complex of trace elements is a promising direction in the nutrition of farm animals and birds. However, along with the positive characteristics associated with the increase in body weight, environmental friendliness of production, etc., these biologically active additives may have a negative effect on animals and humans associated with the toxicity of the used components. In this regard, the purpose of this study was to determine the toxic effect of such feed additives as phytochemicals and trace element metals using a recombinant luminescent strain Escherichia coli K12 MG1655 (pXen7) and a representative of ciliated protozoa Stylonychia mytilus. During the studies, the absolute toxicity of the Cu biocomplex and Scutellaria baicalensis was recorded in relation to the test organisms used. Against this background, Artemisiae absinthil herba and the Digestarom agent showed the smallest toxic effect. The toxic effect of other tested bio-additives was in high doses (0.625-10 mg/mL) and disappeared with a decrease in the concentration of the tested feed additive.
Research of the operating process of the mobile mixed fodder dispenser with a spiral-crewed dosing unit
Authors: Lyalin Evgeny , Trutnev Mikhail , Trutnev Nikolai
Published: September 2022

Highly productive dairy cows require additional distribution of concentrated fodder. Many farms of Russia and the Perm Krai use displacement feed propotioners, one of them is a spiral-crewed dosing unit. This dosing unit has good dosing accuracy and can be installed on the battery-driven dispenser. The device is equipped with the battery capacity of 55 A·h, a transporting spiral has the diameter of 97 mm with the pitch of 73 mm and the rotating frequency of 43 min-1. The dispenser was tested at several commercial dairy farms of the Perm Krai. Since the amount of concentrated fodder is individual for every cow, it must be calculated according to corresponding methodology taking into account the milk yield per day. In-process tests show operating capacity of the designed dispenser with a spiral-screwed dosing unit and its efficiency in mixed fodder distribution. The volume of dispensed fodder is equal to 552…604 g during the test. Taking into account the loss of time to move the dispenser between the animals, its productivity is equal to 3.11 kg/min, inequality in the dose of bulk bran does not exceed 4.18%, and 3.27% in the dose of granulated mixed fodder. Power consumption for fodder distribution is 45 … 47 W/h. In-process tests justify the value of earlier conducted scientific research.
Effect of colistin sulfate in the health status and bacteriological gut flora in store pigs with nonspecific gastroenteritis
Authors: Engashev Sergei , Savinkov Aleksei , Sadov Konstantin , Iliasov Pavel
Published: September 2022

Piglets with the nonspecific gastroenteritis received Colistin 12000000 with drinking water for 5 days is the doses 0.6 g/100 kg in Group 1 and 0.8 g/100 kg in Group 2. This provided the complete therapeutic efficacy (the clinical recovery) on Day 4 in both treatment groups. The dynamics of the erythrocytes and leukocytes suggested the recovery of the morphofunctional homeostasis after the disease in both treatment groups. After the treatment with the Colistin 12000000, the prevalence of the Streptococcus gallolyticus reduced by 8.3% in the Group 1. Klebsiella pneumoniae prevalence reduced by 33.3%. In Group 2, the prevalence of Streptococcus gallolyticus reduced by 41.7% after the 5-day therapy and was 25.0% at the end of the study. Klebsiella pneumoniae prevalence reduced twice, and it was ultimately observed in 16.7% of cases. Other bacteria presented in the washings at the baseline in both groups were no more observed at the end of the treatment. The symbiotic flora was found in both groups at the end of the experiment in a sufficient number. Thus, the efficient dose of the test drug was 0.6 g/100 kg provided the desirable clinical effect comparable to the higher dosing regimen. The drug well tolerated, with no side effects or adverse events reported throughout the study.
Increasing the staff use efficiency in consumer cooperatives: current trends in conditions of digitization of agriculture
Authors: Drozdova Marina , Nagovitsyna Lidia , Kapelyuk Zoya , Gorodkova Svetlana , Aletdinova Anna
Published: September 2022

The purpose of the study is to identify current trends in increasing the efficiency of using the personnel of consumer cooperation organizations. This, along with other sectors of the economy, performs the functions of the third stage of the economic reproduction process (exchange), and the third sphere of the agro-industrial complex sectors that complete the production process in the sphere of commodity circulation. The personnel of economic entities carry out procurement, transportation, processing, storage and marketing of products to end consumers. In the context of existing demographic problems, the decline of the rural population, the challenge is to increase the efficiency of using the part of the economically active population employed in the diversified activities of consumer cooperation. A long-term study of the functioning of cooperatives made it possible to accomplish the purpose of this study. This concerns the development of ways to increase the efficiency of using the personnel of cooperative organizations – preliminary measures. Such measures include training and retraining of specialists, advanced training of workers in cooperative higher and secondary vocational educational institutions, and subsequent ones as a result of the creation of integrated complexes, using modern equipment, new technologies and digitalization advances, providing for the efficient use of personnel. As a new trend, the training of specialists who work with cooperative members is proposed. The economic participation of members will have a positive impact on the performance of their cooperative and increase the efficiency of the use of personnel of consumer cooperation organizations.
Development of technology for the production of thermally conductive carbon foams using microspheres and pitches
Authors: Vagizov Tagir , Akhmetzyanov Rishat , Galiev Ilgiz , Sharafutdinova El'mira , Galimova Nazirya
Published: September 2022

The technological process of obtaining thermally conductive carbon foams based on microspheres and pitches, including the stages of mixing the initial components, pressing the mixture of components, obtaining semi-finished "green" foam, low-temperature carbonization, carbonization, high-temperature heat treatment, pyro-compaction, mechanical processing has been developed. It is shown that the structure of the resulting foam is characterized by a lower content of voids, the layered structure of the walls of microspheres. The obtained values of thermophysical and physical-mechanical characteristics provide the possibility to use the foams for work in extreme conditions