bluuebunny/crossref_metadata_2025 huggingface dataset:
Modelling the significance of organizational conditions on quiet quitting intention among Gen Z workforce in an emerging economy
Authors: Xueyun Zhong , Al Mamun Abdullah , Masukujjaman Mohammad , Rahman Muhammad Khalilur , Gao Jingzu , Yang Qing
Published: September 2023

The phenomenon of “quiet quitting” has gained significant attention globally through various platforms, raising concerns about the impact of workplace stress on individuals’ personal lives and sparking social movements and investigations. As the number of Generation Z individuals is projected to surpass millennials by 2050, understanding and addressing the quiet quitting behaviour of this generation becomes crucial, considering their negative experiences during the COVID-19 pandemic and their preference for a work-life balance, which has led to a rejection of intense competition and a desire for a more relaxed lifestyle. Thus, this study investigated the factors (work conditions, job security, perceived career development opportunities, affective organizational commitment, and perceived organizational support on job burnout and employee well-being) determining the quiet quitting intention among Chinese Gen Z employees. It used an online survey to obtain cross-sectional data from 683 respondents, which were then tested using partial least squares structural equation modelling. The results showed that work conditions, job security, perceived career progression opportunities, affective organizational commitment, and perceived organizational support had a significant positive effect on employee well-being and that job burnout had a major negative effect. Furthermore, employee well-being had a significant negative impact on China’s Gen Z employees’ quit quiting decision and job burnout had a significant positive influence on China’s Gen Z employees’ quit quiting decision. The findings provide valuable insights for organizations and practitioners, enabling them to address these factors and effectively reduce quiet quitting intentions. Moreover, this study aligns with the Social Exchange Theory (SET), which explains how the interactions between employees and their organizations influence expectations and outcomes. By considering the SET framework, organizations can understand the motivations behind employees’ behaviours and make informed decisions to foster a positive work environment and enhance employee well-being.
Examining the association between social media fatigue, cognitive ability, narcissism and misinformation sharing: cross-national evidence from eight countries
Authors: Ahmed Saifuddin , Rasul Muhammad Ehab
Published: September 2023

Several studies have explored the causes and consequences of public engagement with misinformation and, more recently, COVID-19 misinformation. However, there is still a need to understand the mechanisms that cause misinformation propagation on social media. In addition, evidence from non-Western societies remains rare. This study reports on survey evidence from eight countries to examine whether social media fatigue can influence users to believe misinformation, influencing their sharing intentions. Our insights also build on prior cognitive and personality literature by exploring how this mechanism is conditional upon users’ cognitive ability and narcissism traits. The results suggest that social media fatigue can influence false beliefs of misinformation which translates into sharing on social media. We also find that those with high levels of cognitive ability are less likely to believe and share misinformation. However, those with low cognitive ability and high levels of narcissism are most likely to share misinformation on social media due to social media fatigue. This study is one of the first to provide cross-national comparative evidence highlighting the adverse effects of social media fatigue on misinformation propagation and establishing that the relationship is not universal but dependent on both cognitive and dark personality traits of individuals.
Mechanisms of point defect formation and ionic conduction in divalent cation-doped lanthanum oxybromide: first-principles and experimental study
Authors: Shitara Kazuki , Kuwabara Akihide , Nunotani Naoyoshi , Misran Muhammad Radzi Iqbal Bin , Inada Miki , Uchiyama Tomoki , Uchimoto Yoshiharu , Imanaka Nobuhito
Published: September 2023

The ionic conduction mechanism in M2+-doped (M: Mg, Ca, Zn, and Sr) lanthanum oxybromide (LaOBr) was investigated theoretically and experimentally.
A 3D-printed square-hole electrode for dendrite-free zinc–air batteries
Authors: Mou Chuancheng , Bai Yujia , Zhang Yi , Liu Yijian , Hu Zhen , Chen Jiayu , Wang Genxiang , Wu Xuantao , Wang Hui , Sun Yuhan
Published: September 2023

A corrosion-resistant electrode was prepared by a combination of 3D printing and etching. It can be stable in alkaline solution for a long time. So the electrode can achieve a cycle life of more than 1000 h.
Characterization of sulfur/carbon copolymer cathodes for Li–S batteries: a combined experimental andab initioRaman spectroscopy study
Authors: Kiani Rana , Steimecke Matthias , Alqaisi Marah , Bron Michael , Sebastiani Daniel , Partovi-Azar Pouya
Published: September 2023

S/DIB copolymers containing short and long sulfur chains are distinguishable based on their Raman activity in S–S bond stretching region,i.e.400–500 cm−1.
Combining in situ electrochemistry, operando XRD & Raman spectroscopy, and density functional theory to investigate the fundamentals of Li2CO3 formation in supercapacitors
Authors: Freitas Bruno , Nunes Willian G. , Real Carla G. , Rodella Cristiane B. , Doubek Gustavo , M. da Silva Leonardo , Thaines Ericson H. N. S. , Pocrifka Leandro A. , Freitas Renato G. , Zanin Hudson
Published: September 2023

This study combines operando XRD & Raman spectroscopy and DFT simulation to reveal how Li2CO3 formation and reversibility may contribute to energy storage in supercapacitors.
Regulating the selective adsorption of OH* over the equatorial position of Co3O4via doping of Ru ions for efficient water oxidation reaction
Authors: Madhu Ragunath , Karmakar Arun , Arunachalam Preethi , Muthukumar Jaisakthi , Gudlur Pradeep , Kundu Subrata
Published: September 2023

The synthesized Ru-Co3O4 delivers a high performance towards the OER in alkaline (292 mV) and acidic (365 mV) media. Structural optimization demonstrates the distortion of bond length favours the selective adsorption of OH− which facilitates the OER.
Role of cavities created by azobenzene-modified UiO-66 in bulky ionic liquid for high photoresponsive CO2 uptake behavior
Authors: Li Meng-Meng , Dinker Manish Kumar , Liu Yang , Zuo Mingrui , Ding Lifeng , Liu Xiao-Qin , Sun Lin-Bing
Published: September 2023

Cavities (intrinsic/extrinsic) are created in porous liquid by ionic liquid surrounding MOF with pendant azo-group which bends under UV-light and dissipates the extrinsic cavities. Thus, a large change in CO2 uptake is achieved under UV/Vis light.
CuCeTA nanoflowers as an efficient peroxidase candidate for direct colorimetric detection of glyphosate
Authors: Jiang Cong , Zhong Huimin , Zou Jiahui , Zhu Guancheng , Huang Yanyan
Published: September 2023

A CuCeTA nanozyme was designed as a peroxidase mimic for intelligent colorimetric detection of glyphosate.
Application of singlet oxygen-activatable nanocarriers to boost X-ray-induced photodynamic therapy and cascaded ferroptosis for breast cancer treatment
Authors: Zhang Beibei , Liu Hao , Wang Yifei , Zhang Yong , Cheng Jingliang
Published: September 2023

The D-NPVR self-assembled using singlet oxygen-responsive hyperbranched copolymers realized X-ray-boosted release of the ferroptotic inducer, leading to the combined treatment of X-PDT and ferroptosis against breast cancer.
Positional effects of alkyl chains on the photovoltaic performances of quinoxaline-based polymers
Authors: Nugraha Dinda Fariesta , Yu Yifan , Yoon Jung Won , Ahn Hyungju , Prayogo Juan Anthony , Whang Dong Ryeol , Lee Jihoon , Choi Hyosung , Chang Dong Wook
Published: September 2023

The position of the alkyl chains was carefully adjusted to improve the photovoltaic characteristics of D–A-type quinoxaline-based polymers.
B/N/O-participated multi-resonance TADF emitters by a simple peripheral decoration strategy enable high-efficiency electroluminescence with EQEs up to 36.5%
Authors: Xu Yulin , Han Jianmei , Li Nengquan , Huang Zhongyan , Miao Jingsheng , Yang Chuluo
Published: September 2023

This work reports highly efficient B/N/O-participated multi-resonance thermally activated delayed fluorescence emitters with a simple peripheral decoration strategy, enabling electroluminescence device with external quantum efficiency up to 36.5%.
A super-tough and self-healing biomimetic luminescent elastomer enabled by hydrogen bonding arrays and lanthanide-bipyridine moieties
Authors: Di Zhao  , Yue Chunmei , Li Qianrui , Guo Lei , Li Huanrong
Published: September 2023

Here, a spider-silk-inspired luminescent elastomer with self-healing properties was synthesized by integrating hydrogen bonding arrays and lanthanide-bipyridine coordination bonds into polymer chains.
Implementation of Esophageal Screening in an Outpatient Hospital-Based Setting: A Quality Improvement Project
Authors: Gregor Jessica W. , Watts Stephanie A.
Published: September 2023

Purpose:

Despite evidence supporting interconnectivity of oropharyngeal and esophageal swallowing, evaluation and treatment are dichotomized. When the videofluoroscopic swallowing study (VFSS) only considers oropharyngeal swallowing, the full scope of swallowing impairment may be missed. A lower rate of esophageal screening in an outpatient hospital setting may result from lack of speech-language pathologist (SLP) training and understanding of screening feasibility. This project was an internal quality improvement project (QIP) at Mayo Clinic in Arizona to (a) educate and train SLPs on conducting the Robust Esophageal Screening Test (REST) and (b) determine the feasibility of REST protocol implementation in a multidisciplinary swallow clinic.

Method:

Fishbone analysis was used to identify potential causes of the gap in quality. Six Sigma methodology was used to outline the QIP. SLPs were trained in the REST protocol. To ensure adequate training, reliability ratings were assessed with the Cohen's kappa statistic. Esophageal screening via REST was implemented as an adjunct to the standard protocol during VFSS over a 3-month period for referred patients with dysphagia. Clinical findings were recorded.

Results:

All clinical rater SLPs reached the threshold of κ = .8 to ensure adequate rater reliability. Among 136 outpatients who underwent esophageal screening via REST, 100 patients completed the full REST screening and 36 completed a partial REST screening. Of the 100 full screenings, 80 patients had a failed screening, which indicated a potential esophageal swallowing impairment. Findings were discussed by members of the multidisciplinary dysphagia care team.

Conclusions:

The results of this QIP show that focusing on assessment of dysfunction and interplay across the swallowing continuum can substantially improve patient care by expediting and specifying next steps of the multidisciplinary dysphagia care team.
The galactic acceleration scale is imprinted on globular cluster systems of early-type galaxies of most masses and on red and blue globular cluster subpopulations
Authors: Bílek Michal , Hilker Michael , Renaud Florent , Richtler Tom , Chaturvedi Avinash , Samurović Srdjan
Published: September 2023

Context. Globular clusters (GCs) carry information about the formation histories and gravitational fields of their host galaxies. It was found before that the radial profiles of the volume number density of GCs in GC systems (GCSs) follow broken power laws, while the breaks occur approximately at the a0 radii. These are the radii at which the gravitational fields of the galaxies equal the galactic acceleration scale a0 = 1.2 × 10−10 m s−2 known from the radial acceleration relation or the MOND theory of modified dynamics.

Aims. Our main goals here are to explore whether the above results hold true for galaxies of a wider mass range and for the red and blue GC subpopulations.

Methods. We exploited catalogs of photometric GC candidates in the Fornax galaxy cluster based on ground and space observations and a new catalog of spectroscopic GCs of NGC 1399, the central galaxy of the cluster. For every galaxy, we obtained the parameters of the broken power-law density by fitting the on-sky distribution of the GC candidates, while allowing for a constant density of contaminants. The logarithmic stellar masses of our galaxy sample span 8.0 − 11.4 M⊙.

Results. All investigated GCSs with a sufficient number of members show broken power-law density profiles. This holds true for the total GC population and the blue and red subpopulations. The inner and outer slopes and the break radii agree well for the different GC populations. The break radii agree with the a0 radii typically within a factor of two for all GC color subpopulations. The outer slopes correlate better with the a0 radii than with the galactic stellar masses. The break radii of NGC 1399 vary in azimuth, such that they are greater toward and against the direction to NGC 1404, which tidally interacts with NGC 1399.
A host galaxy study of southern narrow-line Seyfert 1 galaxies
Authors: Varglund I. , Järvelä E. , Ciroi S. , Berton M. , Congiu E. , Lähteenmäki A. , Di Mille F.
Published: September 2023

We studied seven nearby narrow-line Seyfert 1 (NLS1) galaxies inJandKsbands with redshifts varying from 0.019 to 0.092. This is the first multi-source study targeting the hosts of southern NLS1 galaxies. Our data were obtained with the FourStar instrument of the 6.5 mMagellan Baadetelescope at the Las Campanas Observatory (Chile). The aim of our study is to determine the host galaxy morphologies of these sources by using GALFIT. We were able to model six out of the seven sources reliably. Our conclusion is that all of the reliably modelled sources are disk-like galaxies, either spirals or lenticulars. None of these sources present an elliptical morphology. Our findings are in agreement with the hypothesis that disk-like galaxies are the main host of jetted NLS1 galaxies. Taking advantage of observations in two bands, we also produced aJ − Kscolour map of each source. Five of the six colour maps show significant dust extinction near the core of the galaxy – a feature often seen in gamma-ray-detected jetted NLS1 galaxies, and interpreted to be a consequence of a past minor merger.
Seed productivity of Rosa oxyodon Boiss
Authors: Ramazanova Bayzanat
Published: September 2023

This article presents the results of the study examining the pollination process and seed reproduction in the sharp-toothed wild rose (Rosa oxyodon Boiss.) endemic to the Caucasus. The objects of the study are natural populations of the studied species. To study the processes of pollination, loose buds were isolated with flesilin bags using the method of I.A. Shantser. When studying the germination of R. oxyodon seeds, various sowing options were carried out on the Gunib Plateau: 1) sowing with seeds collected from fruits of different degrees of maturity in August, September, and October in open ground; 2) spring sowing with seeds collected from mature fruits after stratification, scarification and without them. In each variant, 100 seeds were sown. The aim of the study is to examine the reproductive characteristics of R. oxyodon endemic to the Caucasus. Our studies demonstrate that zero percent of R. oxyodon fruits form through self-pollination and geitonogamy. In its natural environment, the species yields enough seeds for potential seed reproduction of a population. Our findings revealed that R. oxyodon is an obligate self-incompatible entomophilous species with low productivity coefficient but high fecundity potential, which guarantees stable seed reproduction of the species. R. oxyodon seeds are characterized by mixed and long dormancy period.
Indicators of adaptability of representatives of the genus Acer in an urban environment
Authors: Chernyavskaya Irina , Ednich Evgenia , Belous Oksana
Published: September 2023

A topical task has been set to assess the state of arboreal vegetation used in the landscaping of the city on the example of five species of the genus Acer. The main physiological and biochemical characteristics associated not only with the functionality of plants, but also involved in the formation of the plant's response to stress are involved for evaluation. It is shown that species differ in their physiological and biochemical characteristics and different reactions are observed in species to anthropogenic stressors. A significantly lower number of all groups of photosynthetic pigments was observed in species A. negundo and A. saccharinum, A. negundo it also differs in low indicators of the specific surface area of the sheet. In all five maple species in the urban environment, there was a significant increase in the total fund of green and yellow pigments compared to the background; there is an increase in the ratio Σchl / Σcar by 1.1-1.7 times, mainly due to a decrease in the level of chlorophylls and an increase in the proportion of carotenoids. A. negundo has significantly lower water deficiency and water loss by leaf tissues. The highest values of ascorbic acid were noted in the species A. saccharinum. To interpret the responses of species to the stressors of an urbanized area, cluster analysis was used, which divided the species into two clusters; at the same time, common mechanisms of responses were identified in maples that are introduced from different habitats.
Features of the functional activity of melissa officinalis (Melissa officinalis L.) and medicinal mixture based on it
Authors: Gappoeva Valentina , Khabayeva Zinaida , Gagloeva Albina , Agayeva Fatima , Bugulova Izeta
Published: September 2023

Using a battery of behavioral models (a black-and-white chamber, an open field and an elevated plus maze), comparative studies of the degree of severity and orientation of the functional activity of melissa officinalis and medicinal mixture based on it were carried out. The work was performed on 30 white female laboratory rats of the Wistar line, weighing 190-220 g. In the case of melissa officinalis monoculture, a wateralcohol tincture of this drug was used and administered orally to the animal on the day of testing. For the preparation of the experimental herbal mixture, the herb of melissa officinalis was used as the basis, as additional components of the mixture - herbs of oregano (Origanum vulgare) and garden sage (Salvia officinalis), hawthorn berries (Crataegus) and common licorice root (Glycyrrhiza glabra) in the ratio 17:10:10:10:10 (per 100 g of experimental herbal mixture: 30 g of melissa officinalis and 17.5 g of the remaining components). The water extraction of the product was carried out in accordance with the existing GOST recommendations. The manifestation of a significant anxiolytic effect of melissa officinalis, manifested by 2 test systems, was revealed. It was found that in the anxiolytic effect of melissa officinalis, the antiphobic component is more pronounced compared to the manifestation of research activity. The experimental medicinal mixture based on melissa officinalis caused, along with an increase in the stress of rats in an unusual situation for them, a more pronounced manifestation of search and research and motor activity.
Variability of morphological features of Dracocephalum multicaule (Lamiaceae) in natural populations of Dagestan
Authors: Guseinova Ziyarat , Alibegova Asiyat
Published: September 2023

The structure of intra- and inter-population variability of Dracocephalum multicaule Montbr. et Auch. ex Benth. along the altitude gradient was studied on the basis of a complex of morphological features of plants. Two populations of D. multicaule were collected from different altitude levels (800 and 1130 m above sea level). Differences between populations by place of growth (microclimatic conditions), communities in which the species grows, age composition, as well as morphological features were revealed. A decrease in the average values of quantitative and dimensional traits with the increase in altitude has been recorded, with the exception of two (the length of the inflorescence and the number of verticils). Intra- and inter-population variability of traits are at medium and high levels. Variability of the number of flowers in the inflorescence (43.5–51.5) and weight characteristics (36.1–50.0) are high. The interpopulation variability of species traits is the result of the influence of a complex of factors of the altitude gradient and the population age. The areas differ in ecological habitat conditions and the degree of anthropogenic load. The increasing anthropogenic impact in the places where the species grows disrupts the stability of natural populations and affects plant reproduction. In order to preserve the species of D. multicaule in natural habitats, it is necessary to reduce anthropogenic pressure, as well as to introduce the species into culture.
Evaluating the effectiveness of filter media in the treatment of poultry wastewater
Authors: Bocharnikov Viktor , Bocharnikova Olesya , Denisova Maria , Kozinskaya Olga , Repenko Tatiana
Published: September 2023

The technology of sorption treatment of wastewater of poultry farms is considered. A comparative assessment of two ameliorants in terms of chemical absorption properties is carried out. The result of a comparative assessment of two natural sorbents for the sorption properties of heavy metals, shows that the best absorption effect has a natural zeolite. Natural ameliorant adsorbed in the studied effluents more than 60 percent of harmful impurities at optimum contact time of 12 hours of stay in the aggressive liquid medium of waste water, and activated charcoal showed less effective properties of sorption of chemical impurities. Experimental data focuses on reducing the environmental load of water bodies in which wastewater is discharged.
Physiological and biochemical parameters of drought tolerance of some genotypes of garden roses
Authors: Grebennikova Oksana , Pilkevich Ruslana , Gubanova Tatiana , Plugatar Svetlana
Published: September 2023

To identify drought resistance of the studied genotypes of garden roses during the period of maximum probability of drought on the Southern Coast of the Crimea, the water regime, proline concentration, enzyme activity and chlorophyll fluorescence induction parameters under controlled dehydration were studied. Analysis of water regime parameters showed that under conditions of water stress, the best water-holding and recovery capabilities were shown by leaves of cv. ‘Borisfen’ and R. hugonis species. Species R. indica, R. bracteata, R. rouletti, R. foetida showed instability of water regime under conditions imitating dry weather. Studies of changes in biochemical parameters revealed that under relatively mild wilting conditions after removal of stress, metabolic processes are restored in R. hugonis, R. bracteata, R. indica and cv. ‘Borisfen’. Wilting under conditions imitating dry weather does not cause irreversible metabolic disturbances in R. hugonis, R. bracteata, and cv. ‘Borisfen’. Under different wilting conditions, cv. ‘Borisfen’and R. foetida species had relatively stable functioning of FS II. Simulation of dry weather led to irreversible disturbances in the oxygen-releasing complex and thylakoid destruction in R. gallica during the stressor, and in R. indica and R. bracteata species - after recovery of water availability. The highest drought tolerance is in in cv. ‘Borisfen’and R. hugonis sprcies.
Obtaining fertilizers from organic waste
Authors: Kokoeva Aneta , Borukaev Timur , Molova Zalina , Baziev Ibragim , Zhidkov Ruslan
Published: September 2023

One of the serious and acute problems of our century is the problem of protecting the natural environment from the negative effects of various wastes that are generated by constantly increasing human economic activity. In order to protect and protect water resources, atmospheric air, soils, and for the use of various valuable components contained in the generated waste, new and diverse waste processing technologies are being developed and implemented every day. In this regard, the article presents a new way of processing chicken waste, lowering its pH by diluting it with appropriate acids. This is a chemical processing method. Due to the binding by chemical bonds, nitrogen remains in the fertilizer as a useful trace element.
Hydrocarbon composition of liquid products of catalytic oxy-cracking of vacuum gasoil
Authors: Guseinova Elvira , Hasanov Alakbar , Shikhiyev Rashad
Published: September 2023

The hydrocarbon composition of liquid products of oxycracking of vacuum gas oil obtained in the presence of a zeolite-containing catalyst has been studied. It has been established that the group hydrocarbon composition of the liquid oxycracking catalyzate is significantly affected by the process parameters. When considering the influence of the process temperature, it was found that the concentration of C5-C9 and C10+ alkanes has an opposite temperature dependence: the C5-C9 yield passes through a maximum at a temperature of 500°C, while for C10+ it is a minimum temperature; there is a linear relationship between the temperature and the yield of unsaturated; the yield of naphthenes gradually decreases with increasing temperature; elevated temperatures contribute to an increase in the total yield of aromatic hydrocarbons. When varying the duration of the process, it was revealed: within 900 seconds from the beginning of the process, the most significant decrease in concentration was noted for aromatic hydrocarbons. The low oxidation state of 0.5% contributes to the intensive conversion of high molecular weight alkanes and aromatic hydrocarbons with long side chains; the concentration of oxygen-containing compounds raises with an increase in the degree of oxidation to 1%, passing through a maximum. The contact time with the catalyst had a complex effect on the hydrocarbon composition of the liquid products of vacuum gas oil oxycracking: a short contact time contributes to a decrease in the concentration of high molecular weight paraffinic and naphthenic hydrocarbons and an increase in aromatic hydrocarbons; with a subsequent increase to 2 s, it drops sharply. The obtained data made it possible to establish the fundamental distinguishing features of the catalytic oxycracking of vacuum gas oil from the traditional catalytic and noncatalytic oxidative ones, and also to propose a list of reactions occurring during the catalytic oxycracking of vacuum gas oil.
The effect of mineral nutrition on yield, nutritional value and consumer safety of radish microgreens under different photoperiods
Authors: Shibaeva Tatjana , Rubaeva Alexandra , Sherudilo Elena , Titov Alexander
Published: September 2023

The work was aimed to examine the effect of mineral nutrition on yield and content of phytochemicals with antioxidative properties in radish (Raphanus sativus var. radicula) microgreens grown under different photoperiods (16 h and 24 h). Microgreens were supplied with mineralized water or 50% Hoagland nutrient solution. The study has revealed that robust index (RI, dry mass per unit of stem volume) was increased by the presence of mineral nutrition as expected. However, the relationship between the content of phytochemicals that determine nutritional value of radish microgreens and amount of nutrients in the growing media depended on what phytochemical was under consideration. Thus, plants supplied with Hoagland solution had higher chlorophyll and carotenoid content, while plants supplied with water had higher concentration of such antioxidants as anthocyanins and proline and lower nitrate content. Continuous lighting synergistically increased plant response to nutrient deficiency in terms of elevated anthocyanin and proline content and decreased nitrate content, while enhanced RI, chlorophyll and anthocyanin content in plants supplied with nutrient solution. Thus, microgreen productivity and nitrate content as well as some phytochemicals adding nutritional value to radish have opposite dependence on the level of plant nutrient supply, which suggests growers to make a choice between higher yield or higher health benefits to human health and consumer safety of radish microgreens.
Drones in agriculture: Analysis of different countries
Authors: Nazarov Dmitry , Nazarov Anton , Kulikova Elena
Published: September 2023

This article provides an exhaustive, comparative study on the integration and utilization of drones in agricultural practices across various nations. The authors first illuminate the general applications of drones, highlighting their use in crop monitoring, health assessment, irrigation management, and precise pesticide application. The advantages of drone use, such as improved crop yields, reduced environmental impact, and economic efficiency, are discussed in detail. Subsequently, the authors embark on a country-wise analysis, examining the adoption rate and regulatory frameworks of drones in countries like the USA, China, Brazil, Australia, and several European and African nations. In the United States, for instance, drones are widely used and are supported by progressive regulations. China, in contrast, demonstrates a higher adoption rate but faces more significant regulatory challenges. The analysis also reveals how developing nations in Africa and South America, while presenting potential for agricultural drones, still grapple with infrastructural, economic, and knowledge barriers. The authors note that even though the use of drones is still relatively nascent, the technology has already made significant contributions to sustainable and efficient agricultural practices. They also contend that with further technological advancement and regulatory support, drones can revolutionize global agriculture. The article closes by advocating for policy changes that would encourage drone use in agriculture, particularly in developing countries. Moreover, it calls for research into affordable and easy-to-operate drone technology, suggesting that this could help overcome some of the adoption barriers faced by farmers in less economically advantaged regions.
Phenolic Compounds from onion husk (Allium cepa L.): Mode of Extraction
Authors: Pasechny Dmitry , Smotraeva Irina , Balanov Petr
Published: September 2023

Phenolic compounds contained in plants can prevent cardiovascular and oncological diseases that pose a serious threat to human health and life. Onion Allium cepa L. is a source of natural phenolic compounds This study investigates the effect of extraction temperature and duration on the total content of phenolic compounds in aqueous extracts of onion husk Allium cepa L. The total content of phenolic compounds in extracts has been measured. The prospects of using onion husk as a source of substances of phenolic nature are analyzed in the article.
Increasing potato yield using foliar fertilization to boost growth
Authors: Gaidar S. M. , Barchukova A. S. , Vetrova S. M. , Posunko I. A. , Pikina A. M.
Published: September 2023

To date, the use of fertilizers has become firmly embedded in advanced crop cultivation technologies, as the main component of obtaining high and sustainable yields. The nutritional regime of plants cannot be optimized only with the help of macronutrients. They also need trace elements that can increase the resistance of plants to adverse growing conditions, diseases and pests. However, the high cost of such fertilizers makes it necessary to develop new more effective and less expensive drugs. Therefore, in modern potato cultivation technologies, much attention is paid to non-root top dressing. As a result of three-fold leaf treatments with the developed fertilizer, the yield increase of potato variety Gulliver was 0.4…5.2 t/ha, variety Vimpel 2.0…5.1 t/ha, variety Matushka 0.1…4.1 t/ha.
Heavy metal distribution in the soils and benthal deposits of the seym basin
Authors: Protsenko Elena , Gridasova Olga , Kumani Mihail , Rubanik JuliJa
Published: September 2023

Benthal deposits form under climatic, chemical, physical, biological, mechanical, and hydrological influences in water bodies and their surfaces. An analysis of the benthal deposits is integral for assessing the pollution rate in a water body as it indicates the extent of an anthropogenic impact on it. However, the existing methods of benthal deposit analysis are highly underdeveloped. This research aims to estimate the heavy metal pollution in benthal deposits of the Zheleznogorsk region headwaters, Kursk Region. In order to achieve the set goal, the authors formulated the following objectives: (1) to assess the benthal deposit pollution rate via the regional St. Petersburg assessment method (1996); (2) to assess the benthal deposit pollution rate via pollutant threshold limit values for soils; (3) to identify the top priority pollutants of the benthal deposits in the researched headwaters; and (4) to identify factors of heavy metal flow in benthal deposits. The research results revealed the inadequacy of soil sanitary norms applied to benthal deposits. At the same time, the regional St.Petersburg method has broader possibilities of application in the assessment of benthal deposits. However, it requires adjustment to the environmental conditions of the Central Black Earth zone due to composition differences between soils and benthal deposits. The following metals exceeded the ambient content level in the benthal deposits of Zheleznogorsk region headwaters, Kursk Region: chrome, nickel, iron, and zinc. High iron content in rivers has been registered both in the proximity of the Mikhailovsky mining and processing plant [MMPP] and quarry and in headwaters located near the living areas of Zheleznogorsk far higher than the MMPP. All the water collection basins reviewed in this study demonstrated an even distribution of pollutants with no major divergence from the norm around the MMPP-related objects. However, the pollutant concentration exceeded the limit near all the living areas.
Failure of the Percutaneous Intra-Aortic Balloon to Unwrap–A Case Report
Authors: Curtis Steven E. , Oldham H. Newland
Published: September 2023

An intra-aortic balloon which can be inserted percutaneously has become an attractive adjunct in the past few years. The major benefits of this technique are ease and speed of insertion and the lack of need for a surgical cutdown. Early concerns about post balloon removal hemorrhage due to the large catheter size (12 French) have largely proven to be unfounded. Early experience suggests that the most frequent problem associated with percutaneous insertion has been failure of the balloon to completely unwrap. This problem was observed in 17 of 96 patients (17 .8%) in whom the balloon was inserted perioperatively. Usually, the problem is recognized immediately. The balloon is then withdrawn, re-wrapped, and reinserted or replaced with another balloon. In two patients, failure to completely unwrap was not recognized until later. One patient had the balloon removed while another was simultaneously inserted into the contralateral femoral artery without complication followed by improved and normal balloon function. The second patient is presented depicting recognition of the problem and subsequent solution.
In Line Oxygen Saturation Monitor
Authors: Riley Jeffrey B. , Young Melinda R. , Kauffman Jeffrey N. , Rigatti Richard L. , Facer Donna L. , Daly William L. , Walker Charles T. , Williams Marsha K.
Published: September 2023

The first year, 800 cardiopulmonary bypass (CPB) (infant to adult) case experience with the Bentley Laboratories Oxy-Sat Meter (O-SM) demonstrated numerous patient management advantages to monitoring the percent saturation of hemoglobin (O2 SAT). The O-SM exhibited accuracy equal to present 0 2 SAT monitoring. Patient management advantages fall into two categories: (1) Respiratory, from measuring the adequacy of arterial O2 SAT to documenting oxygen transfer, and (2) Metabolic, judging the adequacy of extracorporeal circuit (ECC) blood flow.

The O-SM was found to have acceptable agreement with Instrumentation Laboratories 282, American Optical Unistat and Oximetrix catheter oximeters or the Severinghaus formula and Coming blood gas machine analog O2 SAT estimators. Forty-three intermittant O-SM readings were compared to Lexington Instrument Corporation Lex-O2-Con hemoglobin content and capacity measurements. The agreement standard deviation is equal to 1.4% 0 2 SAT for pH from 7.27 to 7.47, Base Excess from -8. to 4. mEq/L, temperature from 26 to 36 oC and hematocrit from 18 to 33%. Monitoring O2 SAT during CPB is useful and reliable with the Oxy-Sat Meter.
Extraction of Nitroglycerin by a Membrane Oxygenator
Authors: Dasta Joseph F. , Jacobi Judith , Sokoloski Theodore D. , Beckley Philip , Reilley Thomas E. , Howie Michael B.
Published: September 2023

This study examined the extraction efficiency of a membrane oxygenator for nitroglycerin (NTG). An In-Vitro cardiopulmonary bypass circuit was constructed to mimic clinical conditions. A NTG solution (150 ng/ml) was placed into the circuit via a glass cardiotomy reservoir and circulated at 5 L/min for 60 min. Analysis of NTG samples obtained during the study showed that the oxygenator initially extracted 70% of drug entering the device. A small increase in drug concentration was observed for the first 10 min, followed by a continual decrease. By 60 min only 20% of the original drug concentration remained. We conclude that the membrane oxygenator used during cardiopulmonary bypass is capable of substantially extracting NTG.
Early Clinical Experiences with Terumo’s New Hollow Fiber Membrane Oxygenator: Capiox II
Authors: Sinkewich Marty , Meserko John
Published: September 2023

Terumo’s Capiox II is a hollow fiber membrane oxygenator with an integrated heat exchanger. This device is available in 1.6 m2, 3.3 m2, 4.3 m2, and 5.4 m2 sizes. Our clinical experiences have been with the 3.3 m2, 4.3 m2, and 5.4 m2 sizes, in over 150 open-heart patients. The 3.3 m2 was sized to patients up to 60 kg. The 5.4 m2 was used in all patients >60 kg. Both normothermic and hypothermic (24°-30° bladder) perfusions were performed. The heat exchanger was efficient and demonstrated structural integrity. On bypass, patient vital signs, gas and blood flows, arterial and venous blood gases and blood chemistries were monitored. Arterial saturations were 100%. Venous saturations were at least 65%. No acid-base problems were encountered. Initially, 100% oxygen was used. Later a gas blender using O2 and compressed air was utilized. Our experience concludes that the Capiox II is a safe, efficient onepump membrane oxygenator with integral heat exchanger. It is easy to set up and recirculate, delivering satisfactory oxygen transfer rates with a blended gas to blood flow ratio (≤1:1).
The Effect of Temperature on the Pressure Drops Across 25 and 40 Micron Arterial Line Filters
Authors: Kopp Michael E. ,   Biomedical Design/Safety Consultants
Published: September 2023

The purpose of this in vitro study was to quantitate the effect of temperature on the pressure drop, ΔP, across 25 and 40 micron arterial line filters. The pressure drop for each micron size filter was found to significantly increase (P < .01) with decreasing blood temperature when measured at a constant blood flow (Q = 5 LPM) and a hematocrit of 35%. Protein electropheresis, hematology analysis, and testing for cryoglobulins indicated that blood clot formation or cryoprecipitates did not contribute to the measured pressure drop. During the conduct of extracorporeal circulation knowledge of pressure drop versus blood temperature is useful to the perfusionist in accounting for temperature effects when reading the pressure at the arterial filter inlet.

Before deciding to bypass an arterial filter because of a high inlet pressure reading the perfusionist should consider the effect of temperature.
Cold Blood and Autoimmune Hematologic Disorders During Cardiopulmonary Bypass
Authors: Kersting Jim
Published: September 2023

A discussion of clinical syndromes which can result from the disorders popularly known as “cold agglutinins” is presented. Current perfusion techniques may make it increasingly necessary to remain appraised of these potential complications of cardiopulmonary bypass. The pertinent specific disorders are Cold Agglutinin Syndrome and Paroxysmal Cold Hemoglobinuria. Mechanisms of the autoimmune systems are reviewed. The relationship between perfusionist, surgical team, and the hematology laboratory in approach to potentially complicated hypothermic procedures is discussed.
Determination of Blood Concentrations of Urea and Potassium Cyanate that Reduce Mechanical Hemolysis
Authors: Roberts Donald G. , Nystrom Ulla , William-Ollsson Goran
Published: September 2023

Mechanical hemolysis can be reduced in vitro by treating blood with urea or potassium in concentrations of 300 mg and 4 mg/100 ml blood respectively. 1 These concentrations have also been used clinically in treating hemolytic disease. 2–5
Electromagnetic Determination of Blood Flow Through IMPRA (Expanded Polytetrafluoroethylene) Graft
Authors: Michalik Richard E. , Seipp Harry W.
Published: September 2023

The use of perivascular electromagnetic flow determination is an accepted diagnostic tool in reconstructive vascular surgery and like techniques are in widespread use in the laboratory. As yet, no prosthetic graft material has been available through which blood flow could be accurately determined in the acute setting. IMPRA® an expanded polytetrafluoroethylene in the form of a vascular prosthesis does permit such determination when pretreated with minute amounts of absolute ethanol.

Graphic data is presented to show the quality of flow signal that may be obtained through IMPRA® as well as the accuracy of the signal with reference to flow determinations made through a fresh arterial segment under carefully controlled conditions.
The power influence of executives and corporate investment efficiency: empirical evidence from Chinese state-owned enterprises
Authors: Huang Yewei , Qiu Junqin
Published: September 2023

Previous literature has explored investment efficiency in terms of executive incentives, supervisory mechanisms, information disclosure, agency conflicts, and managerial capabilities. This study focuses on analysing the power influence of executives in the context of Chinese State-Owned Enterprises (SOEs) from the two hypotheses of “economic man” and “social man”, aiming to improve the research between the power influence of executives and investment efficiency. This study adopts principal component analysis to comprehensively evaluate the power influence of executives in Chinese SOEs from four dimensions, namely, organisational position influence, personal competence influence, industry influence, and prestige influence. Using the analytical tool STATA15 to establish a regression model, the mechanism of executive power influence on investment efficiency is explored from the logic of “financing constraints” and “diversification”. It then explores the moderating effects of equity concentration and independent director oversight. The empirical results show that the greater the power influence of the executive, the lower the investment efficiency. The intermediary mechanisms of this study find that executives of Chinese SOEs can use their power influence to reduce financing constraints, obtain more resources, and make diversified investments, thus generating inefficient investments. This study also finds that equity concentration and oversight by independent directors have a positive moderating effect on executive power and investment efficiency. The results of this study are robust due to the use of the instrumental variables approach. The innovation of this study integrates the measurement of executive power influence in the particular context of SOEs and analyzes its impact on investment efficiency. It enriches the study of factors influencing executive power and corporate investment efficiency.
A regression model combined convolutional neural network and recurrent neural network for electroencephalogram-based cross-subject fatigue detection
Authors: Yuan Duanyang , Yue Jingwei , Xu Huiyan , Wang Yuanbo , Zan Peng , Li Chunyong
Published: September 2023

Fatigue, one of the most important factors affecting road safety, has attracted many researchers’ attention. Most existing fatigue detection methods are based on feature engineering and classification models. The feature engineering is greatly influenced by researchers’ domain knowledge, which will lead to a poor performance in fatigue detection, especially in cross-subject experiment design. In addition, fatigue detection is often simplified as a classification problem of several discrete states. Models based on deep learning can realize automatic feature extraction without the limitation of researcher’s domain knowledge. Therefore, this paper proposes a regression model combined convolutional neural network and recurrent neural network for electroencephalogram-based (EEG-based) cross-subject fatigue detection. At the same time, a twofold random-offset zero-overlapping sampling method is proposed to train a bigger model and reduce overfitting. Compared with existing results, the proposed method achieves a much better result of 0.94 correlation coefficient (COR) and 0.09 root mean square error (RMSE) in a within-subject experiment design. What is more, there is no misclassification between awake and drowsy states. For cross-subject experiment design, the COR and RMSE are 0.79 and 0.15, respectively, which are close to the existing within-subject results and better than similar cross-subject results. The cross-subject regression model is very important for fatigue detection application since the fatigue indication is more precise than several discrete states and no model calibration is required for a new user. The twofold random-offset zero-overlapping sampling method can also be used as a reference by other EEG-based deep learning research.
A triple band local oscillator coupling system based on a phase grating for five-meter Dome-A terahertz explorer telescope
Authors: Xie GuoAo , Luo ZhengHeng , Zhou KangMin , Liu Dong , Miao Wei , Zhang Wen , Ren Yuan , Shi ShengCai
Published: September 2023

For heterodyne receivers, broadband and integrated local oscillator (LO) coupling schemes are crucial. In this paper, we present a novel terahertz broadband receiver system based on a one-pixel phase grating. We designed a phase grating that can simultaneously couple the LO signals at 690, 850, and 1300 GHz to a superconducting hot-electron bolometer mixer at the incident angles of 25.7°, 20.6°, and 13.3°, respectively. At these three frequencies, the measured diffraction efficiencies of the phase grating are as high as 70%, 73%, and 65%, and the total power coupling efficiencies of the LO coupling system are 22%, 23%, and 23%, in good agreement with the simulated results. This efficient and highly integrated multiband receiver system has potential applications in the proposed Five-meter Dome-A Terahertz Explorer telescope.