bluuebunny/crossref_metadata_2025 huggingface dataset:
Research on the Key Technology of Gob-Side Entry Retaining by Roof Cutting for Thick and Hard Sandstone Roofs
Authors: Hu Chaowen , Wang Eryu , Li Qian , Wang Yilong , Li Yongyuan , Sha Xingfeng
Published: August 2022

In order to ensure the application of gob-side entry retaining by roof cutting for thick and hard sandstone roofs, the key technology of pre-split blasting was studied. The LS-DYNA was used to analyze the blasting effect of the energy-gathering pipe. Using the methods of theoretical analysis and numerical simulation, it was determined that the optimal cutting height was 16 m and the optimal cutting angle was 15°. The effect of pressure relief by roof cutting was verified by FLAC3D. It is proposed to use deep-hole loosening blasting to solve the problem of the sandstone with a thick hard roof being difficult to collapse. A group of loose blasting holes was designed to be arranged every 20 m in the gob-side roadway. The depth of the #1 blasthole was 47 m, and the angle to the horizontal direction was 20°; the depth of the #2 blasthole was 65 m, and the angle to the horizontal direction was 15°. A field test was carried out in the 7135 ventilation roadway of Qidong Coal Mine China. The on-site peeping results showed that the blasting with the energy-gathering pipe had a good effect of directional slitting. After deep-hole loosening blasting, the thick hard sandstone roof collapsed and filled the gob in time. The monitoring curves of the hydraulic support showed that the hydraulic support resistance of the working face in the side with roof cutting was much smaller than that of the side without roof cutting, and the effect of pressure relief by roof cutting was good.
An Investigation into the Perspectives of Elementary Pre-Service Teachers on Sustainable Development
Authors: Nguyen Lam-Huu-Phuoc , Bui Nguyen-Bich-Thy , Nguyen Thi-Ngoc-Cam , Huang Chin-Fei
Published: August 2022

Teachers in elementary schools play a crucial role in educating children about sustainable development. Therefore, the concept of sustainable development is essential for elementary pre-service teachers to be ready for their future careers. This study used the sequential mixed methods design to investigate the relationship between the sustainable development perspectives of elementary pre-service teachers in Southern Vietnam and the current teacher training curriculum. The EDINSOST sustainability questionnaire was distributed to 392 participants in order to measure four dimensions of sustainable development: critical contextualization of knowledge, sustainable use of resources, participation in community processes, and ethics. A set of six interview questions was conducted with eight participants, focused on their understandings of sustainable development and the evaluation of the curriculum on sustainable development. Quantitative findings revealed that elementary pre-service teachers rate moderately on all dimensions; however, the knowledge is slightly higher than the behavior. Moreover, there were variations in perspectives based on pre-service teachers’ grade level and gender. Qualitative findings suggested the lack of sustainable development perspectives amongst pre-service teachers and the gaps in the teacher training curriculums regarding sustainable development. Finally, detailed discussions regarding the implementation of sustainable development in the training curriculum were provided.
The Effect of Bottom Ash Ball-Milling Time on Properties of Controlled Low-Strength Material Using Multi-Component Coal-Based Solid Wastes
Authors: Chen Tianxiang , Yuan Ning , Wang Shanhu , Hao Xinfei , Zhang Xinling , Wang Dongmin , Yang Xuan
Published: August 2022

As the conventional disposal method for industrial by-products and wastes, landfills can cause environmental pollution and huge economic costs. However, some secondary materials can be effectively used to develop novel underground filling materials. Controlled low-strength material (CLSM) is a highly flowable, controllable, and low-strength filling material. The rational use of coal industry by-products to prepare CLSM is significant in reducing environmental pollution and value-added disposal of solid waste. In this work, five different by-products of the coal industry (bottom ash (BA), fly ash, desulfurized gypsum, gasification slag, and coal gangue) and cement were used as mixtures to prepare multi-component coal industry solid waste-based CLSM. The microstructure and phase composition of the obtained samples were analyzed by scanning electron microscopy and X-ray diffraction. In addition, the particle size/fineness of samples was also measured. The changes in fresh and hardened properties of CLSM were studied using BA after ball milling for 20 min (BAI group) and 45 min (BAII group) that replaced fly ash with four mass ratios (10 wt%, 30 wt%, 50 wt%, and 70 wt%). The results showed that the CLSM mixtures satisfied the limits and requirements of the American Concrete Institute Committee 229 for CLSM. Improving the mass ratio of BA to fly ash and the ball-milling time of the BA significantly reduced the flowability and the bleeding of the CLSM; the flowability was still in the high flowability category, the lowest bleeding BAI70 (i.e., the content of BA in the BAI group was 70 wt%) and BAII70 (i.e., the content of BA in the BAII group was 70 wt%) decreased by 48% and 64%, respectively. Furthermore, the 3 d compressive strengths of BAI70 and BAII70 were increased by 48% and 93%, respectively, compared with the group without BA, which was significantly favorable, whereas the 28 d compressive strength did not change significantly. Moreover, the removability modulus of CLSM was calculated, which was greater than 1, indicating that CLSM was suitable for structural backfilling that requires a certain strength. This study provides a basis for the large-scale utilization of coal industry solid waste in the construction industry and underground coal mine filling.
Artificial Intelligence Technologies for Forecasting Air Pollution and Human Health: A Narrative Review
Authors: Subramaniam Shankar , Raju Naveenkumar , Ganesan Abbas , Rajavel Nithyaprakash , Chenniappan Maheswari , Prakash Chander , Pramanik Alokesh , Basak Animesh Kumar , Dixit Saurav
Published: August 2022

Air pollution is a major issue all over the world because of its impacts on the environment and human beings. The present review discussed the sources and impacts of pollutants on environmental and human health and the current research status on environmental pollution forecasting techniques in detail; this study presents a detailed discussion of the Artificial Intelligence methodologies and Machine learning (ML) algorithms used in environmental pollution forecasting and early-warning systems; moreover, the present work emphasizes more on Artificial Intelligence techniques (particularly Hybrid models) used for forecasting various major pollutants (e.g., PM2.5, PM10, O3, CO, SO2, NO2, CO2) in detail; moreover, focus is given to AI and ML techniques in predicting chronic airway diseases and the prediction of climate changes and heat waves. The hybrid model has better performance than single AI models and it has greater accuracy in prediction and warning systems. The performance evaluation error indexes like R2, RMSE, MAE and MAPE were highlighted in this study based on the performance of various AI models.
Sustainable Development of Vernacular Residential Architecture: A Case Study of the Karuč Settlement in the Skadar Lake Region of Montenegro
Authors: Rajković Irena , Bojović Marija , Tomanović Dušan , Akšamija Lemja Chabbouh
Published: August 2022

Vernacular architecture and its responses to natural factors through architectural patterns are recognized as expressions of bioclimatic principles and national architectural responses to location. The vernacular architectural heritage of architecture is one of the most important factors in preserving and developing the cultural identity of a nation. Through research on the vernacular architecture of the coastal area of Skadar Lake, our goal is to recognize and potentially valorize the local traditional characteristics of authentic houses as ecological building patterns, which also express the fundamentals of sustainability principles. Although examples of vernacular architecture are disappearing due to contemporary globalization, and a mere imitation of motifs from past periods occurs, the historical specifics of architectural expression remain the inspiration and catalyst for future achievements based on the idea of preserving the local and regional recognizability of architecture. This research resulted in a redefinition of vernacular, bioclimatic concepts in a way that preserves construction techniques, which basically have an ecological approach, and, at the same time, provides modern solutions with bioclimatic concepts. The case study conducted on the village of Karuč in the area of Skadar Lake presented in the paper contributes to revealing the potential of bioclimatic principles and the energy rehabilitation of vernacular architecture in order to revitalize it through a new contemporary architectural expression. This study’s contents propose revitalization solutions at two levels of the following: settlement and typical houses. The study also aims to create a model, that is, a modern expression of a characteristic Karuč house, with improved functionality and energy characteristics for national architecture. Identifying all the basic building patterns, including the positioning of buildings, construction, the application of available materials, and the design of buildings, this paper presents conditions for the adequate valorization and preservation of authentic vernacular architecture and creates guidelines for further upgrades and the bioclimatic revitalization of vernacular architecture in a certain location.
The Multi-Dimensional Interaction Effect of Culture, Leadership Style, and Organizational Commitment on Employee Involvement within Engineering Enterprises: Empirical Study in Taiwan
Authors: Liu Lin , Tai Hsing-Wei , Cheng Kuo-Tai , Wei Chia-Chen , Lee Chang-Yen , Chen Yen-Hung
Published: August 2022

The prosperity of the engineering industry is the main driving force of the country’s economic development, and the smooth operation of engineering enterprises is the premise for ensuring the prosperity of the engineering industry. This study demonstrates the four dimensions of organization, leadership management, employee identification, and employee involvement, discusses the four components involved (Corporate Culture, Paternalistic Leadership, Organizational Commitment, Job Involvement) and studies their interrelationships and mutual influences. A comprehensive literature review not only makes the four components clearer but puts forward eight hypotheses. Prior to the comprehensive survey analysis, a pilot study was conducted for experienced practitioners in the industry and 311 valid questionnaires were collected. Using IBM SPSS and IBM SPSS AMOS software, the questionnaire data were analyzed by constructing a structure equation, and the results show that: (1) corporate culture is positively related to the paternalistic leadership style and organizational commitment; (2) The paternalistic leadership style is positively correlated with the organizational commitment; (3) The organizational commitment and job involvement are positively correlated; (4) Organizational commitment has an intermediary effect between corporate culture and job involvement; (5) There is no positive correlation between corporate culture and paternalistic leadership style, on the one hand, and job involvement, on the other; (6) The intermediary effect of paternalistic leadership is not significant between corporate culture and job involvement.
Mild Solutions for Fractional Impulsive Integro-Differential Evolution Equations with Nonlocal Conditions in Banach Spaces
Authors: Li Ye , Qu Biao
Published: August 2022

In this paper, by using the cosine family theory, measure of non-compactness, the Mönch fixed point theorem and the method of estimate step by step, we establish the existence theorems of mild solutions for fractional impulsive integro-differential evolution equations of order 1<β≤2 with nonlocal conditions in Banach spaces under some weaker conditions. The results obtained herein generalizes and improves some known results. Finally, an example is presented for the demonstration of obtained results.
Deflecting an Asteroid on a Collision Course with Earth Using a Powered Swing-By Maneuver
Authors: Chagas Bruno S. , Prado Antonio Fernando Bertachini de Almeida , Winter Othon Cabo
Published: August 2022

The deflection of potentially dangerous asteroids has been treated with great intensity and has gained more and more attention in scientific research. Different techniques are developed over the years. Among these techniques, we found the kinetic impact deflection technique to be the most viable at the moment. In this work we address the kinetic impact deflection technique, but in a scenario where we have a short time to deflect an asteroid that will collide with Earth. For this, we also use a maneuver similar to a powered gravity-assisted maneuver with Earth in a previous passage to change the trajectory of the asteroid to avoid the collision. We apply this technique in three scenarios: (i) impulse before the close encounter, (ii) impulse during the close encounter, and (iii) impulse after the close encounter. We observe that some trajectories are symmetric with respect to the line Sun–Earth, and others are asymmetric. We show that, using this technique, it is possible to change the trajectory of the asteroid, even in a short period, to avoid the collision without using a large variation of velocity in the orbit of the asteroid.
Effective Consensus-Based Distributed Auction Scheme for Secure Data Sharing in Internet of Things
Authors: Jia Xuedan , Song Xiangmei , Sohail Muhammad
Published: August 2022

In a traditional electronic auction, the centralized auctioneer and decentralized bidders are in an asymmetric structure, where the auctioneer has more ability to decide the auction result. This asymmetric auction structure is not fair to the participants and not suitable for data auctions in the Internet of Things (IoT). The blockchain-based auction system, with participant equality and fairness, is typically symmetrical and particularly suitable for IoT data sharing. However, when applied to IoT data sharing in reality, it faces privacy and efficiency problems. In this context, how to guarantee privacy and break the inherent performance bottleneck of blockchain is still a major challenge. In this paper, a consensus-based distributed auction scheme is proposed for data sharing, which enforces privacy preservation and collusion resistance. A reverse auction-based decentralized data trading model is introduced to solve the trust problem without a centralized auctioneer, where bidders reach consensus on the auction result. Specifically, we devise a differentially private auction mechanism to incentivize data owners to participate in data sharing. An effective hybrid consensus algorithm is constructed among bidders to reach consensus on the auction result with improved security and efficiency. Theoretical analysis shows that the proposed scheme ensures the properties of privacy preservation, incentive compatibility and collusion resistance. Experimental results reveal that the proposed mechanism guarantees the data sharing efficiency and has certain scalability.
A Novel Disturbance Rejection Method Based on Robust Sliding Mode Control for the Secure Communication of Chaos-Based System
Authors: Nguyen Quang Dich , Giap Van Nam , Tran Van Huy , Pham Duc-Hung , Huang Shyh-Chour
Published: August 2022

This paper mainly proposes a new disturbance observer (DO) for a secure communication system (SCS) of the chaos-based system (CBS). First, the fractional-order (FO) Chen chaotic system is remodeled by a Takagi–Sugeno (T–S) fuzzy system with the aim of softening in calculation. Second, the robust fixed-time was designed to synchronize two nonidentical chaotic systems. Third, a new disturbance observer was proposed to compensate for the disturbance and uncertainty of the secure communication system. Fourth, the proof of the proposed method based on Lyapunov condition together with simulation are given to illustrate the correctness and effectiveness of the proposed theory. The tested disturbance on the public channel was mostly compensated by the appropriately estimated disturbance value. The states of master and slave systems (MSSs) were closed to each other in fixed-time. These factors are used to confirm that the symmetry of two chaotic systems were obtained by the proposed control methods.
Modification of Deoxynivalenol by a Fungal Laccase Paired with Redox Mediator TEMPO
Authors: Shanakhat Hina , McCormick Susan P. , Busman Mark , Rich Joseph O. , Bakker Matthew G.
Published: August 2022

Mycotoxins such as deoxynivalenol introduce a health risk to the food supply and are costly to manage or avoid. Technologies for reducing or eliminating the toxicity of deoxynivalenol could be useful in a variety of processes, such as in preserving the value as animal feed of byproducts of ethanol production. We characterized transformation products of deoxynivalenol that were formed by the combination of a fungal laccase paired with the chemical mediator 2,2,6,6-tetramethylpiperidine-N-oxyl (TEMPO), using chromatography, mass spectrometry, and nuclear magnetic resonance spectroscopy. Alcohol groups at the C3 and C15 positions of deoxynivalenol were oxidized to ketones, and the chemical mediator became covalently linked to the C4 position. Conditions experienced during gas chromatography led to the dissociation of TEMPO, forming 3,15-diketodeoxynivalenol. Understanding the range of possible modifications to deoxynivalenol and other trichothecenes is a necessary step toward effective remediation of contaminated grain.
Insights into the Underlying Mechanism of Ochratoxin A Production in Aspergillus niger CBS 513.88 Using Different Carbon Sources
Authors: Wei Shan , Hu Chaojiang , Nie Ping , Zhai Huanchen , Zhang Shuaibing , Li Na , Lv Yangyong , Hu Yuansen
Published: August 2022

Aspergillus niger produces carcinogenic ochratoxin A (OTA), a serious food safety and human health concern. Here, the ability of A. niger CBS 513.88 to produce OTA using different carbon sources was investigated and the underlying regulatory mechanism was elucidated. The results indicated that 6% sucrose, glucose, and arabinose could trigger OTA biosynthesis and that 1586 differentially expressed genes (DEGs) overlapped compared to a non-inducing nutritional source, peptone. The genes that participated in OTA and its precursor phenylalanine biosynthesis, including pks, p450, nrps, hal, and bzip, were up-regulated, while the genes involved in oxidant detoxification, such as cat and pod, were down-regulated. Correspondingly, the activities of catalase and peroxidase were also decreased. Notably, the novel Gal4-like transcription factor An12g00840 (AnGal4), which is vital in regulating OTA biosynthesis, was identified. Deletion of AnGal4 elevated the OTA yields by 47.65%, 54.60%, and 309.23% using sucrose, glucose, and arabinose as carbon sources, respectively. Additionally, deletion of AnGal4 increased the superoxide anion and H2O2 contents, as well as the sensitivity to H2O2, using the three carbon sources. These results suggest that these three carbon sources repressed AnGal4, leading to the up-regulation of the OTA biosynthetic genes and alteration of cellular redox homeostasis, ultimately triggering OTA biosynthesis in A. niger.
A Review of HDV Infection
Authors: Caviglia Gian Paolo , Ciancio Alessia , Rizzetto Mario
Published: August 2022

Hepatitis D is the most severe viral hepatitis. Hepatitis D virus (HDV) has a very small RNA genome with unique biological properties. It requires for infection the presence of hepatitis B virus (HBV) and is transmitted parenterally, mainly by superinfection of HBsAg carriers who then develop chronic hepatitis D. HDV has been brought under control in high-income countries by the implementation of HBV vaccination, and the clinical pattern has changed to a chronic hepatitis D seen in ageing patients with advanced fibrotic disease; the disease remains a major health concern in developing countries of Africa and Asia. Every HBsAg-positive subject should be tested for HDV serum markers by reflex testing, independently of clinical status. Vaccination against HBV provides the best prophylaxis against hepatitis D. The only therapy available so far has been the poorly performing Interferon alfa; however, several new and promising therapeutic approaches are under study.
Degradation Efficiency Analysis of Sulfadiazine in Water by Ozone/Persulfate Advanced Oxidation Process
Authors: Lu Hai , Feng Weihao , Li Qingpo
Published: August 2022

Antibiotics are a new class of organic compounds that have antibacterial and anti-inflammatory effects in the clinic, but their widespread use has serious adverse effects on the natural water environment. Sulfadiazine (SDZ) is a typical kind of antibiotic, and the treatment effect of the traditional biochemical degradation process has not been ideal. Thus, in order to find a more efficient and clean degradation method, we investigated the degradation effect of ozone/persulfate (O3/PMS) advanced oxidation process (AOPs) on SDZ in prepared water and natural water for the first time and compared it with the experimental results of ozone (O3) and ozone/ultraviolet (O3/UV) methods. The experimental results showed that when the initial mass concentration of O3 was 3 mg/L, the initial mass concentration of SDZ was 10 mg/L, the temperature was 25 °C, the pH was 6.8 ± 0.1, the Kobs of O3/PMS was 0.2497 min−1, and the Kobs values of O3 and O3/UV were 0.1242 and 0.1328 min−1, respectively. The time required for O3/PMS to degrade SDZ below the detection limit (0.01 mg/L) was about 7 min shorter than that of O3 and O3/UV. It was found that in O3/PMS, the increase in the initial mass concentration of SDZ inhibited its degradation, and the increase in the initial mass concentration of ozone increased the degradation rate of sulfadiazine. The degradation process conformed to the pseudo-first-order reaction kinetic equation. O3/PMS was suitable for weak alkaline environments. When pH was 9, the concentration of free radicals was the highest. Excessive alkalinity led to mutual quenching of free radicals and reduced the degradation rate. The mineralization effect of O3/PMS was slightly worse than that of the O3/UV process, but O3/PMS effectively degraded SDZ and fluorescent substances dissolved in water, with good prospects in practical engineering applications.
Evolution of Sustainable Water Resource Utilization in Hunan Province, China
Authors: Liu Na , Jiang Wulin , Huang Linjuan , Li Yilong , Zhang Cicheng , Xiao Xiong , Huang Yimin
Published: August 2022

The demand for social and economic development has promoted research into water resources. The combined effects of natural conditions and human activities on regional water resource usage are not well understood. The sustainable utilization of water resources was assessed in terms of supply (e.g., precipitation) and demand (e.g., ecological water resources footprint (EFw)) sides in Hunan Province, China, from 2010 to 2019. The results showed that: (1) on the supply side, water resources were increased across Hunan Province. The spatial patterns of total water resources are significantly heterogeneous, with high values in the east and south, which are mainly affected by precipitation; (2) on the demand side, evapotranspiration was great in areas with high vegetation coverage. The EFw was high in relatively developed areas. The mean percentage of agricultural EFw remained dominant at approximately 60% with a steady decreasing trend, while that of eco-environmental EFw increased; and (3) the sustainable utilization of water resources in Hunan Province is generally rational. Moreover, the potential for water resource development and utilization is really significant in eastern and southern Hunan Province. The findings are beneficial in providing an important scientific basis for policymaking relating to the efficient utilization of regional water resources.
The Variations and Influences of the Channel Centerline of the Zhenjiang-Yangzhou Reach of the Yangtze River Based on Archival and Contemporary Data Sets
Authors: Liu Cunli , Liu Binglin , Zhang Zhenke , Li Changfeng , Wei Guoen , Jiang Shengnan
Published: August 2022

The Zhenjiang-Yangzhou reach of the Yangtze River is located at the top of the Yangtze River Delta, which is one of the most dramatic changes in the lower reaches of the Yangtze River. The study on the migration characteristics of the channel centerline is crucial for a comprehensive understanding of the river channel changes in the Zhenjiang-Yangzhou reach. In this study, a detailed calculation method is proposed to extract the channel centerline of the Zhenjiang-Yangzhou reach by using old maps and remote sensing satellite map and decompose it into seven parts. The spatial and temporal changes of Net Shift Distance (NSD), Cumulative Moving Distance (CMD), Migration Rate of Channel Centerline (MRCC) and Linear Regression Change Rate of channel centerline (LRCR) from 1865 to 2019 on the cross-section scale are studied. The results show that: (1) from 1868 to 2019, the channel centerline of the Zhenjiang-Yangzhou reach kept shifting. The average net displacement distance of the section is 1103.47 m on the right bank, and the average cumulative displacement distance of the section is 2790.51 m. (2) According to the NSD and CMD data of each part, the long-term movement direction of the channel centerline is basically the same, and a small part of the channel centerline has periodic reverse swing. The probability of channel centerline moving right is about twice that of moving left. At the same time, some rivers have high erosion risk. (3) Through MRCC and LRCR data, the total number of channel centerline moving left and right is 156 and 329, respectively, and the erosion risk level of the near half of the shoreline is high. (4) The change of river boundary conditions and hydrodynamic force will affect the migration rate and direction of channel centerline. (5) This study proposes a method to extract channel centerline from a braided reach and study its changes, which can be applied to other similar reaches with a long history of human activities and high density. The results enrich people’s understanding of the long-term changes of a braided reach in the lower reaches of the Yangtze River and have certain guiding significance for river regulation, navigation safety, and revetment construction.
NATURALIZATION OF THE ADVENTIVE FRACTION OF THE MEADOWS FLORA OF THE ROMA-POLTAVA GEOBOTANICAL DISTRICT
Authors: Zhuk M. , Gapon S.
Published: August 2022

In the article the adventive fraction of onion flora of Romensko-Poltavsky geobotanical district is analyzed. According to the results of the researches it was established that this fraction includes 55 species belonging to 47 genera, 16 genera, 13 rows, 2 classes, and 1 division. According to the time of introduction, 37 species (67.3%) are dominated by archaeophytes, 40 species (72.7%) by the mode of invasion, 45 species (81.8%) of epicophytes were found by the degree of naturalization, 23.6% of the primary areal species, 12 species (21.8%) by the Mediterranean-Iranian-Turanian and 8 species (14.5%) by the Iranian-Turanian group. Xeromesophytes prevail in relation to humidity with 30 species (54.5%) and heliophytes in relation to light with 40 species (72.7%). In terms of life form, chamelephytes have the advantage – 29 species (52.8%).According to the time of introduction among the epecophytes in the flora of the onion study are dominated by archaeophytes, comprising 30 adventive species (54.5%). By mode of introduction, xenophytes dominate among the epicophytes with 33 species (60%).By primary range, the basis of the epicophytes is formed by adventive species of Mediterranean-Iranian-Turanian (11 species), Mediterranean (10 species) and Iranian-Turanian (6 species) origin, which will constitute 27 species or 60% of all epicophytes. In relation to moisture, xeromesophytes dominate among the epicophytes, which constitute 57.8% of the epicophytes. In relation to light, most of the epicophytes are heliophytes – 33 species (60%). Almost half of the epecophytes consist of therophytes with 25 adventive species (45.5%).
INVASIVE CYCLE AND ASSESSMENT OF THE DEPTH OF INVASION OF REPRESENTATIVES OF DENDROFLORA OF UKRAINE IN THE SOME ECOSYSTEMS BY EUROPEAN MISTLETOE (VÍSCUM ÁLBUM L.)
Authors: Kavun E. , Berezovskiy I. , Panko V.
Published: August 2022

Research is related to the biology and ecology of white mistletoe (Víscum álbum L.), with an analysis of its impact on the dendroflora of natural and artificial ecosystems. The sequence of stages of the invasive cycle of mistletoe, starting from the stage of infection, the intensity of the invasion (the degree of its spread in the crown), the suppression of host trees, their death and biodegradation, as well as the mechanism of these processes. These stages have different durations in different species. A comparison of the full cycle of mistletoe infection for those species that are most often infected in Polissya, Eastern Podillya and in the coastal areas of the right bank of the Dnieper. The most sensitive species to the invasion were the following: Populus nigra L., Populus balsamifera L., Tilia cordata Mill, Salix babylonica L., Salix fragilis L., Juglans nigra L. and Juglans cinerea L., Sorbus aucuparia L., Betula pendula Roth , Acer saccharum Marshall, Acer saccharinum L., Fraxinus excelsior L. The intensity of the invasion by mistletoe also takes into account the degree of suppression aforementioned and some other species, have become particularly threatening today, so it requires finding ways to solve this biological and environmental problem. However, a number of tree species can resist to the spreading of mistletoe even under invasion due to mechanisms that ensure their high resistance, among them Populus pyramidalis Rozier, hybrids of poplars, Quércus rúbra L, some others. A number of species are able to resist to mistletoe spreading even under their conditions of infection due to the presence inner mechanisms that ensure their relatively high resistance to this parasite, among them: Populus pyramidalis Rozier, its hybrids, Quércus rúbra L., Prunus avium L., Prunus cerasifera Ehrh. A significant number of dendroflora species are outside of the influence of mistletoe. It is indicates on existing specific biological barriers which block following spreading and adaptation among Víscum album L. populations. The concept of resistance and sensitivity to mistletoe of representatives of dendroflora is offered. The algorithm for determining the tention of invasion by Víscum album, the processes of suppression, death and subsequent biodegradation of affected trees is optimized. The classification of the nature of the interaction of mistletoe and host trees is carried out. Strong invasion of mistletoe white require mutuals special efforts of scientists and state for restriction its spreading.
THE EFFECT OF BACTERIAL AND STIMULATING DRUGS ON THE GERMINATION OF SPRING PEA SEEDS
Authors: Shevchuk O. , Polyvanyi S. , Khodanitska O. , Tkachuk O. , Matviichuk O.
Published: August 2022

The effect of the bacterial drug Rhizoactive and the stimulator Regoplant, as well as their combined use on the laboratory germination of seeds and the beginning growth stages of spring pea plants Oplot, were studied.Regoplant and the mixture Rhizoactive + Regoplant had the greatest influence on the processes of seed germination of spring peas during heterotrophic nutrition. Decrease in the crude mass of cotyledons was detected during the phase of transition of pea seedlings to autotrophic nutrition using the stimulant drug Regoplant and its combination with a bacterial preparation. It was accompanied by the activation of growth processes in the aboveground and underground parts of the seedling, in particular, an in crease in linear size and mass.The best indicators of sowing qualities of spring pea seeds were found when using a combined treatment of seeds with stimulant drug Regoplant and bacterial preparation Rhizoactive. There was an increase in germination energy by 3.0%, general germination by 2.0%, and germination simultaneity by 3.9% compared to control in this variant.
Fertilización a base de residuo de mercado para mayor rendimiento de lechuga (Lactuca sativa L.). Una alternativa sostenible
Authors: Cruz Nieto Dante Daniel , Gálvez Torres Edwin Guillermo , Sotelo Montes Javier Enrrique , Pari Soto Andrea Luisa , Cahuana Flores Jaime Braulio , Pari Soto Andrea Rosario
Published: August 2022

El alza y escases de fertilizantes han reducido la producción de cultivos y esto ha repercutido en los precios de los alimentos. Objetivo fue determinar la dosis adecuada de compost a base residuos de mercado para mayor rendimiento de lechuga. Método se basa en investigación aplicada; por lo que se empleó el Diseño de Bloques Completamente al Azar que constó de 3 bloques y 5 tratamientos, estos fueron: T1 = 0, T2 = 45 g, T3 = 60 g, T4 = 75 g y T5 = 90 g/ planta y se aplicaron 7 días después del trasplante. Se evaluó características físicas de la planta y disposición de nitrógeno con relación a las dosis. Obtenidos los datos se procesaron mediante análisis de varianza y Duncan. Se determinó que T4 destacó en longitud de planta con 25.86 cm, pero T5 en peso de lechuga con 128.23 g, rendimiento con 12.25 tn/ha, diámetro ecuatorial con 21.12 cm y disposición de nitrógeno con 200.4 kg/ha. Concluye que la mayor dosis que es T5 obtuvo mayor rendimiento que se diferenció a 40.81 % respecto al testigo, esto se debe que se adiciono nitrógeno y otros nutrientes, lo cual hubo mayor disponibilidad que optimizó las reacciones bioquímicas y esto influyó en rendimiento.
The Role of Different Lymphoid Cell Populations in Preeclampsia Pathophysiology
Authors: Campbell Nathan E. , Deer Evangeline M. , Herrock Owen T. , LaMarca Babbette B.
Published: August 2022

Preeclampsia (PE), new-onset hypertension during pregnancy, affects up to 10% of pregnancies worldwide. Despite being the leading cause of maternal and fetal morbidity and mortality, PE has no cure beyond the delivery of the fetal-placental unit. Although the exact pathogenesis of PE is unclear, there is a strong correlation between chronic immune activation; intrauterine growth restriction; uterine artery resistance; dysregulation of the renin-angiotensin system. Which contributes to renal dysfunction; and the resulting hypertension during pregnancy. The genesis of PE is thought to begin with insufficient trophoblast invasion leading to reduced spiral artery remodeling, resulting in decreased placental perfusion and thereby causing placental ischemia. The ischemic placenta releases factors that shower the endothelium and contribute to peripheral vasoconstriction and chronic immune activation and oxidative stress. Studies have shown imbalances in proinflammatory and anti-inflammatory cell types in women with PE and in animal models used to examine mediators of a PE phenotype during pregnancy. T cells, B cells, and natural killer cells have all emerged as potential mediators contributing to the production of vasoactive factors, renal and endothelial dysfunction, mitochondrial dysfunction, and hypertension during pregnancy. The chronic immune activation seen in PE leads to a higher risk for other diseases, such as cardiovascular disease, CKD, dementia during the postpartum period, and PE during a subsequent pregnancy. The purpose of this review is to highlight studies demonstrating the role that different lymphoid cell populations play in the pathophysiology of PE. Moreover, we will discuss treatments focused on restoring immune balance or targeting specific immune mediators that may be potential strategies to improve maternal and fetal outcomes associated with PE.
Da razão instrumental à gestão democrática: contribuições do pensamento de Habermas
Authors: Saibot Joelcio , Brígido Edimar , Filipak Sirley Terezinha
Published: August 2022

A gestão democrática no sistema público de ensino definida pela Constituição Federativa do Brasil de 1988 e pela Lei de Diretrizes e Bases da Educação Nacional, n.º 9.394, aprovada em 1996 e estabelecida como uma das metas do Plano Nacional de Educação (2014-2024) tem se tornado um grande desafio, pois os gestores escolares necessitam não apenas ter uma qualificação específica na área da gestão educacional, mas também exercer uma forte liderança no cotidiano escolar. Envolver a comunidade escolar desde a construção do projeto pedagógico até a sua implementação, bem como promover a participação do grupo em conselhos escolares, requer do gestor muitas habilidades, dentre elas, a de propiciar uma comunicação transparente de modo a garantir a gestão democrática. Este trabalho objetiva apresentar os princípios do agir comunicativo de Habermas para facilitar o processo de implementação da gestão democrática nas instituições de ensino. Aborda conceitos de gestão, a fundamentação legal e os desafios da gestão democrática, a importância do agir comunicativo para a sua implementação, a partir das contribuições de Arendt (2017), Habermas (1968, 1989, 2002, 2011), Libâneo (2017), Lück (2009, 2014), Luckesi (2007), Paro (2001,2003), da Constituição Federativa do Brasil (1988), da Lei de Diretrizes e Bases da Educação Nacional, n.º 9.394/ 96 e do Plano Nacional de Educação. A gestão democrática é um dos grandes desafios da Educação no século XXI, de modo muito particular na realidade brasileira que por muitas décadas foi marcada por forte interferência política. Criar espaços de participação popular e deliberação representa um avanço em termos pedagógicos e sociais, uma vez que o que está em pauta é o aumento da qualidade da Educação a ser ofertada para a sociedade.
Sistema de reviews: a importância dos sites de avaliações on-lines na tomada de decisão dos consumidores da hotelaria
Authors: Cunha Kelen Bruna de Oliveira , Do Nascimento Mailson Sampaio , Teixeira Maria Adriana Sena Bezerra
Published: August 2022

O sistema de reviews on line tem sido cada vez mais adotado na tomada de decisão de compras por pessoas no mundo inteiro, sendo assim, tem-se a necessidade de compreender de que forma essas avaliações têm impacto em um do setores que pode ser considerado a porta de entrada para a prática do turismo, o hoteleiro. A presente pesquisa trouxe como objetivo geral analisar a relação entre os sites de classificação e avaliações online no setor hoteleiro, a mesma se caracteriza como exploratória do tipo descritiva. Para alcançar os objetivos propostos, este artigo baseou-se em duas etapas; a primeira foi buscar identificar os sites de avaliações mais usados pelos consumidores e a segunda deu-se pela busca de autores que já haviam falado a respeito. Por fim, concluiu-se que, os sites de avaliações on-line possuem grande relevância para o setor hoteleiro, pois é através dele que muitos clientes decidem na hora da compra.
COMPARATIVE STUDIES OF CALCULATED AND ACTUAL VALUES OF MECHANICAL PROPERTIES OF INCONEL 718 ALLOY
Authors: Adjamsky Sergey , Kononenko Ganna , Podolskyi Rostislav
Published: August 2022

The process of destruction is the final stage of the behavior of the metal under load, and the resistance that the metal gives to the development of this process, largely determines its structural strength. The studies were performed on samples made of Inconel 718 powder material after standard heat treatment. Tests to determine the mechanical properties were performed in accordance with GOST 1497 on an INSTRON test machine and performed analytical calculations using QForm software at a stable running traverse speed of 2 mm / s. Geometric parameters were monitored using a 3-D scanner and Geometric Control X software. A comparison of the ideal technical diagram with the true technical diagram of the Inconel 718 material revealed that they differed. These discrepancies are explained by the fact that the experimental material tested for stretching, in fact, has a higher value of plastic characteristics by 30% due to the porosity in the experimental material.
USING THE METHOD OF "MINIMAL RISK" IN TECHNICAL DIAGNOSTICS
Authors: Hrechanyi Oleksii , Vasilchenko Tatiana , Fedorenko Stepan , Syniavskyi Dmytro , Tsehelnyi Yevhenii
Published: August 2022

As a lubrication of the spindle drive unit of the rolling stand It is proposed to switch to the oil-air lubrication system. The advantages of "oil-air" lubrication systems are indicated. The effect of iron-containing impurities on the performance of the lubrication system has been established. The methods of recognition theory for determining the boundary value of iron-containing additives in the working fluid of the lubrication system are analyzed. It has been established that for these purposes the “minimal risk” method is optimal, which, unlike the Bayesian method, is less labor-intensive. An example of the practical application of using the "minimal risk" method to determine the permissible content of iron chips in the working fluid of the "oil-air" lubrication system is given.
DEVELOPMENT AND RESEARCH OF ROLL BONDING TECHNOLOGY FOR ALUMINUM REINFORCED COMPOSITES WITH ABSORBED BENDING ENERGY AND FIRE RESISTANCE
Authors: Nosko Maksym , Frolov Yaroslav , Bobukh Oleksandr , Samsonenko Andriy
Published: August 2022

The development and improvement of methods for the production of composite materials and coatings with high performance is an urgent task of modern materials science. Particular interest is the direction of composite materials production and coatings based on aluminum reinforced with a solid phase with improved properties of the composite, reduced specific gravity, increased impact energy that can be absorbed and fire resistance. The importance of creating such composite coatings is dictated by the increasing requirements for the operating conditions of aircraft, for example, measures to protect against bird strikes or as protective barriers, finishing elements, and also as a blank for further production of structural elements. Serious tasks are in terms of full or partial replacement of valuable metals and alloys with cheap and affordable composites with higher performance. However, these problems have not yet been fully resolved to date.
SIMULATION OF SOIL HUMIDITY CHANGES IN THE PROCESS OF THE FRIGATE IRRIGATION MACHINE OPERATION
Authors: Bayrak Ihor , Polyvoda Oksana , Rudakova Hanna
Published: August 2022

In this article, the authors analyze the modern methods and means of soil moistening, as well as existing mathematical models of soil moisture dynamics during the operation of the "Frigate" sprinkler. The necessity of developing a model of moisture distribution in the root and near-surface layers of the soil is substantiated. A mathematical model of soil moisture dynamics in the space of states has been developed, which takes into account the volumes of water consumed by plants and fed to the fields by sprinklers, and also comes naturally in the form of random precipitation and groundwater.
USE OF MATHEMATICAL MODELS IN THE PROBLEMS OF ASSESSING THE CONSEQUENCES OF EXTREME SITUATIONS ON INDUSTRIAL FACILITIES
Authors: Bilyayev Mykola , Bilyayeva Viktoriya , Rusakova Tetyana , Berlov Oleksandr , Kozachyna Vitaliy
Published: August 2022

The report considers some classes of numerical models that were built to predict the consequences of emergencies at industrial enterprises. The first class of models has been developed to predict chemical air pollution in case of accidental emissions of toxic substances. Modeling is carried out on the basis of the fundamental equations of aerodynamics and mass transfer. Difference splitting schemes are used for the numerical solution of the modeling equations. The second class of numerical models has been developed to assess the risk of chemical injury to people in industrial rooms. The third class of models was developed to assess the risk of injury to people when a shock wave moves. To solve this problem Euler equations were used. The fourth class of models was developed to predict river pollution in case of accident chemical pollution. The fifth class of models was developed to assess the influence of protection barriers to reduce air pollution Computer codes were developed on the base of proposed numerical models.
MATHEMATICAL MODEL OF THE CLOSED IRRIGATION SYSTEM AS THE CONTROL OBJECT
Authors: Karpenko Serhii , Rudakova Hanna
Published: August 2022

The article considers the scheme of relationships between the main components of a closed irrigation system such as pumping unit, distribution and irrigation pipeline, shut-off valves, universal sprinklers, control system with their subsequent mathematical description. The system as an object of control is analyzed, input, output and internal parameters of the system are revealed.
MULTIPHYSICAL MATHEMATICAL MODEL OF HEAT AND MASS EXCHANGE IN RECEIVER AND THERMAL STORAGE SYSTEM OF THE SOLAR THERMODYNAMIC PLANT
Authors: Knysh Lyudmyla , Masalykin Stanislav , Yurkov Roman , Borysenko Andriy
Published: August 2022

The main stages of creation of the multiphysical mathematical model of heat exchange in receiver system of the solar thermodynamic system with concentrator are presented in this study. The statistic approach for modeling of the heat fluxes in system «concentrator – heat receiver» is used in first stage. Obtained distribution of concentrated solar flow at outer heat receiver surface is applied as boundary condition for numerical modeling of the convective heat exchange in the heat transfer fluid. The average heat transfer fluid temperature is found in the second stage research. This temperature is determined type of the thermal storage material for the thermal storage module with phase change «solid - liquid». Geometry of the thermal storage module, temperature fields in the thermal storage material, heat transfer flow rate, which ensures given input temperature in energy conversion system were determined.
POSSIBILITIES OF REDUCING THE VOLUME OF ORE THERMAL FURNACES ELECTRIC CONSUMPTION
Authors: Mishchenko Vladyslav , Kachan Yuriy
Published: August 2022

An analysis of existing models of electric current distribution in an ore thermal furnace is presented. A complex algorithmic model of operation of such a furnace is proposed. With the help of this mathematical description it becomes possible to predict the consumption of electrical energy in obtaining different types of ferroalloys. The model also allows the predicted amount of melt formed to stop the process and start draining ferroalloys, which in turn will reduce the melting time and the amount of electricity consumed.
FRACTAL HEAT AND MASS TRANSFER FOR SIMULATION OF PROCESSES IN THE TWO-PHASE ZONE OF METAL SOLIDIFICATION
Authors: Selivorstova Tetiana , Selivorstov Vadim
Published: August 2022

The work is devoted to the development of the fundamental foundations of mathematical modeling of non-local processes of heat and mass transfer in media with a fractal structure - in complex systems modeled by fractals, the study of initial and mixed boundary value problems for the main types of local and non-local differential equations of state and transfer.