bluuebunny/crossref_metadata_2025 huggingface dataset:
Bilateral Vocal Nodules Multidimensional Assessment: Pre- and Post- Speech Language Pathology Intervention
Authors: Alegria Rita , Vaz-Freitas Susana , Maia Fátima , Manso Maria Conceição
Published: September 2023

(1) Background: Vocal fold nodules are bilateral lesions that can have an important negative impact on a person’s job performance, social interaction, and quality of life. This study aims to analyze multidimensional voice evaluation outcomes in a group of patients with bilateral vocal fold nodules who underwent voice therapy. (2) Methods: A retrospective analysis was performed in 42 patients on the following voice evaluations, before and after voice therapy: visual-perceptual (video-laryngostroboscopic evaluation), auditory-perceptual voice analysis based on the GRBAS scale, and aerodynamic voice analysis. Data were collected from January 2001 to December 2019. Data analyses were performed with non-parametric tests (Wilcoxon test) using α = 0.05. (3) Results: The patient average age was 33.6.1 ± 10 years (range 19–60), and 95.2% were female. Voice therapy was delivered by an experienced speech-language pathologist once a week, with an average of 9.8 ± 3 appointments (range 8–17). Vocal fold lesions disappeared in 40.4% of the patients after voice therapy, especially in participants receiving early voice therapy (p = 0.035). When comparing pre- and post-therapy audio-perceptual results, all parameters were improved with statistical significance (p < 0.05) except for the asthenic voice scale. Aerodynamic parameters were all improved but without statistical significance (p > 0.05); (4) Conclusions: Early timing to initiate voice therapy after the onset of symptoms or diagnosis seems to be an important factor for the success of voice therapy (absence of vocal fold nodules).
The First Identification of Trichinella britovi in the Raccoon Dog (Nyctereutes procyonoides) in Romania
Authors: Marin Ana-Maria , Popovici Dan-Cornel , Dărăbuș Gheorghe , Marian Cătălin , Nițușcă Diana , Mederle Narcisa
Published: September 2023

Trichinella spp. are nematodes distributed throughout the world that affect an impressive number of host animals (mammals, birds, and reptiles) involved in the evolution of two cycles, the domestic and the sylvatic. The raccoon dog (Nyctereutes procyonoides) is an omnivorous mammal with great ecological plasticity. The expansion of the raccoon dog in Europe is associated with the risk of the introduction and spread of different pathogens, especially zoonotic ones (Trichinella, Echinococcus). Currently, the raccoon dog’s range in Romania is limited to the Danube Delta area, the Lower Danube Meadow, and the Prut Meadow. The aim of this study was to examine the presence of Trichinella larvae isolated from the muscles of raccoon dog from six hunting funds of Giurgeni, Ialomița County, Romania. The muscle samples were examined via artificial digestion, and the obtained larvae were processed via multiplex PCR. The PCR-amplified ESV and ITS1 DNA fragments were then sequenced for species confirmation. The species Trichinella britovi, which is the most common species identified in wild carnivores in temperate zones, was confirmed. Although T. britovi has been reported in several host animals in Romania, this case report confirms its presence in the raccoon dog for the first time.
Rare Earth Ion Doped Luminescent Materials: A Review of Up/Down Conversion Luminescent Mechanism, Synthesis, and Anti-Counterfeiting Application
Authors: Chen Ziyu , Zhu Hang , Qian Jiajie , Li Zhenxiong , Hu Xiameng , Guo Yuao , Fu Yuting , Zhu Huazhong , Nai Wei , Yang Zan , Li Dan , Zhou Liling
Published: September 2023

With the rapid development of modern technology and information systems, optical anti-counterfeiting and encryption have recently attracted considerable attention. The demand for optical materials is also constantly increasing, with new requirements proposed for performance and application fields. Currently, rare earth ion doped materials possess a unique electronic layer structure, underfilled 4f5d electronic configuration, rich electronic energy level, and long-life excited state, which can produce a variety of radiation absorption and emission. The distinctive properties of rare earth are beneficial for using in diverse optical output anti-counterfeiting. Design is essential for rare earth ion doped materials with multiple responsiveness and multi-channel optical information anti-counterfeiting in the field of information security. Therefore, this mini review summarizes the luminescent mechanisms, preparation methods, performance characteristics and anti-counterfeiting application of rare earth doped materials. In addition, we discuss some critical challenges in this field, and potential solutions that have been or are being developed to overcome these challenges.
Nonlinearity Measurement of Si Transferring Photodetector in the Low Radiation Flux Range
Authors: Li Yue , Liu Zhen , Yuan Yinlin , Zhai Wenchao , Zou Peng , Zheng Xiaobing
Published: September 2023

In order to establish a transferring chain from a photon flux of a single-photon source in quantum radiometry, the nonlinearity of the photodetector needs to be accurately measured. Using the flux superposition method, a nonlinearity measurement setup has been designed. The measurement setup consists of two tungsten halogen lamps, parent–child integrating spheres, an adjustable aperture, a diaphragm tube, and an optical filter. It has the advantage of low polarization error, low interference error, and low stray light effect. The Si photodiode to be measured is cooled to −40 °C to obtain a low noise level for low-flux radiation measurement. The nonlinearity of the Si photodetector is measured for photocurrent ranges from 10−12 A~10−6 A level, with a relative standard uncertainty from 0.0092~0.023%. The relative standard uncertainty of the nonlinearity correction factor ranged from 0.023~0.049%.
Bioactive Compounds from BRS Violet Grape Pomace: An Approach of Extraction and Microencapsulation, Stability Protection and Food Application
Authors: Romanini Edilson Bruno , Rodrigues Leticia Misturini , Stafussa Ana Paula , Cantuaria Chierrito Talita Perez , Teixeira Aline Finger , Corrêa Rúbia Carvalho Gomes , Madrona Grasiele Scaramal
Published: September 2023

Microencapsulating phenolic compounds and anthocyanins from grape pomace, a by-product of the food industry, is attractive because of the many beneficial health effects associated with these compounds. At first, we evaluated the cultivar BRS Violeta using microencapsulation, indicating the degree of innovation in the present research. This study aims to microencapsulate grape pomace extract in a combination of maltodextrin and xanthan gum via lyophilization, and determine the protective effect of this microcapsule on the phenolic compounds and anthocyanins. Thus, the microcapsule stability was determined over 120 days, under different temperature conditions (4 and 25 °C) and in the presence or absence of light. Additionally, a gelatin application test was performed to investigate the effect of the microcapsule on color stability. When comparing the extract versus microcapsules, the microcapsule results were better both for total anthocyanins (1.69 to 1.54-fold) and total phenolic compounds (3.06 to 1.74-fold), indicating a longer half-life after encapsulation. The microcapsule application in gelatin demonstrated that the encapsulating matrix retained the color for 30 days. Thus, the encapsulation method can be recommended to preserve the bioactive compounds and the coloration in food products such as gelatin.
Development of Flowers Buds and Mixed Buds in the Dichasial Inflorescence of Geranium koreanum Kom. (Geraniaceae)
Authors: Lu Wanpei , Han Zhongzhou , Liu Qinghua , Wang Kuiling , Liu Qingchao , Song Xuebin
Published: September 2023

Flower bud differentiation is of great significance for understanding plant evolution and ecological adaptability. The development of flower buds and mixed buds in the dichasial inflorescence of Geranium koreanum was described in this paper. The morphogenesis, surface structure, and organ morphology at different growth stages of G. koreanum buds were examined in detail using scanning electron microscope and stereo microscope. The development of mixed buds started from the flattened apical meristem. The stipule and leaf primordia arose first. Subsequently, the hemispherical meristem was divided into two hemispheres, forming a terminal bud and floral bud primordia, followed by lateral bud differentiation. The formation of the terminal and lateral buds of G. koreanum was sequential and their differentiation positions were also different. The floral bud primordia would develop into two flower units and four bracts. The primordia of a flower bud first formed the sepal primordia, then the stamen and petal primordia, and finally the pistil primordia. Compared to the stamen primordia, the growth of the petal primordia was slower. Finally, all organs, especially the petals and pistil, grew rapidly. When the pistil and petals exceeded the stamens and the petals changed color, the flower bud was ready to bloom.
Increased Tolerance of Massion’s pine to Multiple-Toxic-Metal Stress Mediated by Ectomycorrhizal Fungi
Authors: Zhang Taoxiang , Zhang Panpan , Pang Wenbo , Zhang Yuhu , Alwathnani Hend. A. , Rensing Christopher , Yang Wenhao
Published: September 2023

Pinus massoniana (Massion’s pine), a pioneer tree species, exhibits restoration potential in polluted mining areas. However, the physiological and molecular mechanisms of ectomycorrhizal (ECM) fungi in Massion’s pine adaptability to multiple-toxic-metal stress are still unclear. Hence, Massion’s pine seedlings inoculated with two strains of C. geophilum, which were screened and isolated from a polluted mine area, were cultivated in mine soil for 90 days to investigate the roles of EMF in mediating toxic metal tolerance in host plants. The results showed that compared with the non-inoculation control, C. geophilum (CG1 and CG2) significantly promoted the biomass, root morphology, element absorption, photosynthetic characteristics, antioxidant enzyme activities (CAT, POD, and SOD), and proline content of Massion’s pine seedlings in mine soil. C. geophilum increased the concentrations of Cr, Cd, Pb, and Mn in the roots of Massion’s pine seedlings, with CG1 significantly increasing the concentrations of Pb and Mn by 246% and 162% and CG2 significantly increasing the concentrations of Cr and Pb by 102% and 78%. In contrast, C. geophilum reduced the concentrations of Cr, Cd, Pb, and Mn in the shoots by 14%, 33%, 27%, and 14% on average, respectively. In addition, C. geophilum significantly reduced the transfer factor (TF) of Cr, Cd, Pb, and Mn by 32–58%, 17–26%, 68–75%, and 18–64%, respectively, and the bio-concentration factor (BF) of Cd by 39–71%. Comparative transcriptomic analysis demonstrated that the differently expressed genes (DEGs) were mainly encoding functions involved in “transmembrane transport”, “ion transport”, “oxidation reduction process”, “oxidative phosphorylation”, “carbon metabolism”, “glycolysis/gluconeogenesis”, “photosynthesis”, and “biosynthesis of amino acids.” These results indicate that C. geophilum is able to mitigate toxic metals stress by promoting nutrient uptake, photosynthesis, and plant growth, thereby modulating the antioxidant system to reduce oxidative stress and reducing the transport and enrichment of toxic metals from the root to the shoot of Massion’s pine seedlings.
Topology Structural Design and Thermal Characteristics Analysis of High-Efficiency Heat Conductive Path for the Spindle System
Authors: Li Yang , Liu Zhongting , Li Lei , He Wenlei , Hou Zhaoyang , Zhao Wanhua , Wu Wenwu
Published: September 2023

In order to enhance the heat dissipation of the spindle under working condition, thermal conductivity paths were designed based on the topology optimization method. The heat conductive path was proposed to be constructed in the bearing housing and the spindle housing, which was simplified as a toroidal model. Taking the heat dissipation weakness as the optimization objective, the topological structure with the highest thermal conductivity was obtained based on the OC and IPTO algorithms. In order to analyze the influence of the heat conductive path on the circumferential heat distribution of the spindle, the thermal characteristic of the model with heat conductive paths filled with copper was investigated. Compared with the general model, the heat conductive path could reduce the temperature of the spindle from 47 °C to 33 °C when the volume proportion of the high thermal conductivity material was 40%. At the same time, the strength of the heat conductive path was analyzed, and the size of the stress was not more than 3MPa, which verified the effectiveness of the heat conductive path for efficient heat conduction.
Simulation and Experimental Study on Vibrating Screen-Type Grain-Recovery Device with Upper Centrifugal Fan
Authors: Li Yanjun , Gong Yanguang , Yu Yongtao , Xie Fuxiang
Published: September 2023

To solve the problem of grain loss caused by nibbling during the working process of the maize ear and stem harvesting machine, a vibrating screen-type grain-recovery device with an upper centrifugal fan was designed. The device mainly consists of a centrifugal fan and vibrating screen. The work process of the grain-recovery device is theoretically analyzed, and it is clarified that the turning of the bracts is the key to separating the bracts from the grains, and the design criteria of the vibrating screen are obtained. The CFD–EDEM coupled single-factor simulation experiment was carried out on the size of the vibrating screen sieve hole and the number of draft bars, and the motion posture of the bracts was simulated. Based on the previous CFD–EDEM coupled simulation study, the orthogonal experiment was carried out on the fan speed, vibration screen drive-shaft speed, and operation speed of the grain-recovery device. The orthogonal experimental results show that, when the fan speed is 1000 r/min, the vibration screen drive-shaft speed is 300 r/min, and the operation speed is 3.62 km/h, the performance of the grain-recovery device reaches the optimum level, and the grain recovery rate is approximately 85%.
Construction of a Multifunctional PCM@Catalyst Composite and Its Application in the Fluid Catalytic Cracking Process
Authors: An Guoqing , Cheng Zhixiang , Ouyang Ying , Liu Siqi , Gao Hongyi
Published: September 2023

Fluid catalytic cracking (FCC) is one of the most important processes in gasoline/diesel oil production, but the strong endothermic effect accompanied by this reaction often results in the deactivation of the catalyst. In this paper, a novel multifunctional phase change material (PCM)@Catalyst composite was designed and constructed, in which the PCM could be used to store waste heat and regulate the temperature for enhancing the catalytic efficiency of the FCC catalyst. Firstly, a core/shell Al-12wt%Si@Al2O3 was prepared via subsequent vapor treatment and high-temperature calcination of an Al-12wt%Si sphere. The Al species in the Al-12wt%Si served as the source of metal ions and was transformed in situ into a well-defined Al2O3 shell, which greatly improved the thermal stability and prevented the leaking of the Al-12wt% Si core in the high-temperature situation. The PCMs@Catalyst composite was then fabricated by casting the mixed powder of Al-12wt%Si@Al2O3 and Y zeolite into a granulated structure. The FCC results demonstrate that Al-12wt%Si@Al2O3/Y zeolite can optimize product distribution and reduce coke yield. This design concept and synthesis strategy can be extended to the production of a wide variety of hierarchical PCM@Catalyst composites for other reactions.
Enhancing Electric Discharge Machining Performance by Selecting Electrode Design and Geometrical Parameters for Square, Triangular, and Hexagonal Profiled Holes
Authors: Rafaqat Madiha , Mufti Nadeem Ahmad , Saleem Muhammad Qaiser , Ahmed Naveed , Rehman Ateekh Ur , Zahoor Sadaf , Ali Muhammad Asad
Published: September 2023

Manufacturing of dies, molds, and their allied components requires the machining of holes with different profiles. Electric discharge machining (EDM) die-sinking is a crucial process used in the dies and molds manufacturing industry. By nature, EDM die-sinking is a relatively slow process in terms of material removal rate (MRR) and there are high amounts of tool material loss in terms of tool wear rate (TWR) which directly influence dimensional accuracies and surface roughness (SR). Therefore, the process is continuously evolving to address these limitations. The present research is aligned in this direction such as to bring improvements in MRR, TWR, and SR through modifications to the conventional electrode design and its geometrical parameters. Traditional designs of EDM electrodes have a uniform cross-section through the tool’s entire length and have only one geometrical parameter, i.e., the tool’s cross-section. To improve the EDM performance, traditional designs are completely modified by introducing several geometrical parameters such as relief angles, land thickness, cross-sectional area, shank height, circular relief, and non-circular relief, etc. Electrode designs are employed to mill non-circular profiles including triangular, square, and hexagonal shaped holes. The EDM performance measures strongly depend on the tool’s geometrical parameters (design type, relief angle, land thickness), machining profile (circular, square, triangle, hexagon), as well as the height/depth of the machining feature. By selecting proper tool designs and corresponding geometrical parameters, the EDM performance measures can be improved significantly.
Special Issue “Multiphase Flows and Particle Technology”
Authors: Chen Xizhong , Wang Li Ge , Li Liping
Published: September 2023

Research into multiphase flow and particle technology is closely related and holds significant importance in various fields of engineering and scientific applications [...]
Historical Analysis and Prediction of the Magnitude and Scale of Natural Disasters Globally
Authors: Buszta Julia , Wójcik Katarzyna , Guimarães Santos Celso Augusto , Kozioł Krystian , Maciuk Kamil
Published: September 2023

The aim of this study was to conduct a geospatial analysis of natural disasters occurring worldwide between 1960 and 2018. A total of 9962 disasters were considered, covering 39,953 locations. These phenomena were analysed in terms of frequency and number to determine changes over time and predict future trends. The data included information such as location and year of occurrence. The following natural disasters were included in the analyses: droughts, earthquakes, extreme temperatures, floods, landslides, earth mass movements, storms, and volcanic activity. The analyses were carried out across three dimensions: by continent, by number of disasters in relation to population, and in relation to the area of the continents concerned. An additional objective was to visualise the distribution of disasters by affected countries. This aspect shows the incidence of disasters by year during the period under study, with a 20-year forecast for the coming years.
Drought-Related Spatiotemporal Cumulative and Time-Lag Effects on Terrestrial Vegetation across China
Authors: Wei Wei , Liu Ting , Zhou Liang , Wang Jiping , Yan Peng , Xie Binbin , Zhou Junju
Published: September 2023

Vegetation is one of the most important indicators of climate change, as it can show regional change in the environment. Vegetation health is affected by various factors, including drought, which has cumulative and time-lag effects on vegetation response. However, the cumulative and time-lag effects of drought on different terrestrial vegetation in China are still unclear. To address this issue, this study examined the cumulative and time-lag effects of drought on vegetation from 2001 to 2020 using the Standardized Precipitation Evapotranspiration Index (SPEI) in the Global SPEI database and the Normalized Difference Vegetation Index (NDVI) in MOD13A3. Based on Sen-Median trend analysis and the Mann–Kendall test, the change trend and significance of the NDVI from 2001 to 2020 were explored. The Pearson correlation coefficient was used to analyze the correlation between the SPEI and NDVI at each cumulative scale and time-lag scale and to further analyze the cumulative and time-lag effects of drought on vegetation. The results show the following: (1) The NDVI value increased at a rate of 0.019/10 years, and the increased area of the NDVI accounted for 80.53% of mainland China, with a spatial trend of low values in the west and high values in the east. (2) The average SPEI cumulative time scale most relevant to the NDVI was 7.3 months, and the cumulative effect demonstrated a high correlation at the scale of 9–12 months and revealed different distributions in different areas. The cumulative effect was widely distributed at the 9-month scale, followed by the 12-month scale. The correlation coefficients of cumulative effects between the SPEI and NDVI for cropland, woodland and grassland peaked at 9 months. (3) The average SPEI time-lag scale for the NDVI was 6.9 months, and the time-lag effect had the highest correlation coefficient at the 7-month scale. The strongest time-lag effect for cropland and grassland was seen at 7 months, while the strongest time-lag effect for woodland was seen at 6 months. Woodland had a lower time-lag effect than grassland at different scales. The research results are significant for their use in aiding the scientific response to drought disasters and making decisions for climate change precautions.
Tree Stem Detection and Crown Delineation in a Structurally Diverse Deciduous Forest Combining Leaf-On and Leaf-Off UAV-SfM Data
Authors: Dietenberger Steffen , Mueller Marlin M. , Bachmann Felix , Nestler Maximilian , Ziemer Jonas , Metz Friederike , Heidenreich Marius G. , Koebsch Franziska , Hese Sören , Dubois Clémence , Thiel Christian
Published: September 2023

Accurate detection and delineation of individual trees and their crowns in dense forest environments are essential for forest management and ecological applications. This study explores the potential of combining leaf-off and leaf-on structure from motion (SfM) data products from unoccupied aerial vehicles (UAVs) equipped with RGB cameras. The main objective was to develop a reliable method for precise tree stem detection and crown delineation in dense deciduous forests, demonstrated at a structurally diverse old-growth forest in the Hainich National Park, Germany. Stem positions were extracted from the leaf-off point cloud by a clustering algorithm. The accuracy of the derived stem co-ordinates and the overall UAV-SfM point cloud were assessed separately, considering different tree types. Extracted tree stems were used as markers for individual tree crown delineation (ITCD) through a region growing algorithm on the leaf-on data. Stem positioning showed high precision values (0.867). Including leaf-off stem positions enhanced the crown delineation, but crown delineations in dense forest canopies remain challenging. Both the number of stems and crowns were underestimated, suggesting that the number of overstory trees in dense forests tends to be higher than commonly estimated in remote sensing approaches. In general, UAV-SfM point clouds prove to be a cost-effective and accurate alternative to LiDAR data for tree stem detection. The combined datasets provide valuable insights into forest structure, enabling a more comprehensive understanding of the canopy, stems, and forest floor, thus facilitating more reliable forest parameter extraction.
The Efficiency of Centrifugation in the Detection of Mollicutes in Bovine Milk
Authors: Salina Anelise , Lopes Bruna Churocof , Barone Fabiana Luccas , Langoni Helio
Published: September 2023

Mastitis is one of the main diseases that affects dairy cattle. It is characterized by a multifactorial disease with multiple etiologies including microorganisms such as bacteria, viruses, fungi, yeasts, and algae. Mastitis caused by Mycoplasma spp. results in a contagious nature of infection and has been studied much in Brazil. The objectives of this research were (1) to investigate in clinical mastitis milk samples, by conventional PCR, the presence of the following mycoplasma species: Mycoplasma (M.) bovis, M. bovirhinis, M. bovigenitalium, M. californicum, and M. alkalescens and (2) compare the PCR Mollicutes detection rates using previous concentration and homogenization steps of the milk samples. Of the 993 clinical mastitis milk samples analyzed, 13.7% (136/993) and 8.0% (80/993) were positive for the Mollicutes class after concentration and homogenization, respectively, and all of them were PCR-negative for the five species investigated. Of the 70 expansion milk tanks analyzed, all of them were PCR-negative for the Mollicutes class. The importance of the previous concentration of milk in the routine of molecular analysis was evidenced when compared to the results obtained only with homogenization.
A Modular Framework for Data Processing at the Edge: Design and Implementation
Authors: Urblik Lubomir , Kajati Erik , Papcun Peter , Zolotova Iveta
Published: September 2023

There is a rapid increase in the number of edge devices in IoT solutions, generating vast amounts of data that need to be processed and analyzed efficiently. Traditional cloud-based architectures can face latency, bandwidth, and privacy challenges when dealing with this data flood. There is currently no unified approach to the creation of edge computing solutions. This work addresses this problem by exploring containerization for data processing solutions at the network’s edge. The current approach involves creating a specialized application compatible with the device used. Another approach involves using containerization for deployment and monitoring. The heterogeneity of edge environments would greatly benefit from a universal modular platform. Our proposed edge computing-based framework implements a streaming extract, transform, and load pipeline for data processing and analysis using ZeroMQ as the communication backbone and containerization for scalable deployment. Results demonstrate the effectiveness of the proposed framework, making it suitable for time-sensitive IoT applications.
Mechanical Determinants of Sprinting and Change of Direction in Elite Female Field Hockey Players
Authors: Bustamante-Garrido Alejandro , Izquierdo Mikel , Miarka Bianca , Cuartero-Navarrete Ariel , Pérez-Contreras Jorge , Aedo-Muñoz Esteban , Cerda-Kohler Hugo
Published: September 2023

Profile determination in field hockey is critical to determining athletes’ physical strengths and weaknesses, and is key in planning, programming, and monitoring training. This study pursued two primary objectives: (i) to provide descriptive data on sprinting, deceleration, and change of direction (COD) abilities and (ii) to elucidate the mechanical variables that influence sprint and COD performance in elite female field hockey players. Using radar and time-gate technology, we assessed performance and mechanical data from 30 m sprinting, deceleration, and COD tests for 26 elite female hockey players. A machine learning approach identified mechanical variables related to sprint and COD performance. Our findings offer a framework for athlete categorization and the design of performance-enhancing training strategies at the international level. Two pivotal mechanical variables—relative maximum horizontal force (F0) and maximum velocity (Vmax)—predominantly influence the times across all tested distances. However, the force–velocity profile (FVP) and horizontal deceleration do not influence the variance in the COD test outcomes. These insights can guide the design, adjustment, and monitoring of training programs, assisting coaches in decision making to optimize performance and mitigate injury risks for female hockey players.
Energy-Efficient IoT-Based Light Control System in Smart Indoor Agriculture
Authors: Hadj Abdelkader Oussama , Bouzebiba Hadjer , Pena Danilo , Aguiar António Pedro
Published: September 2023

Indoor agriculture is emerging as a promising approach for increasing the efficiency and sustainability of agri-food production processes. It is currently evolving from a small-scale horticultural practice to a large-scale industry as a response to the increasing demand. This led to the appearance of plant factories where agri-food production is automated and continuous and the plant environment is fully controlled. While plant factories improve the productivity and sustainability of the process, they suffer from high energy consumption and the difficulty of providing the ideal environment for plants. As a small step to address these limitations, in this article we propose to use internet of things (IoT) technologies and automatic control algorithms to construct an energy-efficient remote control architecture for grow lights monitoring in indoor farming. The proposed architecture consists of using a master–slave device configuration in which the slave devices are used to control the local light conditions in growth chambers while the master device is used to monitor the plant factory through wireless communication with the slave devices. The devices all together make a 6LoWPAN network in which the RPL protocol is used to manage data transfer. This allows for the precise and centralized control of the growth conditions and the real-time monitoring of plants. The proposed control architecture can be associated with a decision support system to improve yields and quality at low costs. The developed method is evaluated in emulation software (Contiki-NG v4.7),its scalability to the case of large-scale production facilities is tested, and the obtained results are presented and discussed. The proposed approach is promising in dealing with control, cost, and scalability issues and can contribute to making smart indoor agriculture more effective and sustainable.
The Effects of Different Re-Warm-Up Strategies on Power, Changing of Direction and Ball Shooting Velocity in Well-Trained Soccer Players
Authors: Matsentides Demetris , Christou Marios , Zaras Nikolaos
Published: September 2023

The purpose of the study was to investigate whether a re-warm-up training session either with tuck jumps and linear sprints or with changing of directions may enhance power, agility or ball shooting velocity in well-trained soccer players. Ten soccer players (age: 18.2 ± 1.7 years; body mass: 64.4 ± 8.0 kg; body height: 1.71 ± 0.04 m) participated in the study. Players performed three different re-warm-up interventions including no re-warm-up (C), change of direction (COD) and jump-sprint condition (JS). Before each re-warm-up intervention, players performed the same warm-up condition followed by 8 min of passive rest. Following the re-warm-up interventions, countermovement jump (CMJ), T-Test agility time-trial and ball shooting velocity were measured. Performance in CMJ height, power and power per body mass remained unchanged following all three conditions (p > 0.05). However, the agility time-trial was significantly reduced following COD re-warm-up compared to C (−1.7 ± 1.6%, p = 0.03). Ball shooting velocity was increased following COD compared to C (4.7 ± 3.8%, p = 0.014), while a statistical trend was found between JS and C interventions (4.8 ± 5.4%, p = 0.060). These results suggest that a re-warm-up intervention including changing of directions may significantly enhance T-Test agility time-trial and ball shooting velocity in well-trained soccer players.
The Role of Motivation and Physical Self-Concept in Accomplishing Physical Activity in Primary School Children
Authors: Pavlović Slobodan , Pelemiš Vladan , Marković Jovan , Dimitrijević Marko , Badrić Marko , Halaši Sabolč , Nikolić Ivko , Čokorilo Nebojša
Published: September 2023

Background: The goal of this research is to identify correlations of motivation and physical self-concept with physical activity among students of younger school age, as well as the level of prediction of motivation and physical self-concept with physical activity of students in physical education classes. Methods: The sample of respondents consisted of 411 students of the third and fourth grades from the territory of the Zlatibor district. A modified Self-Regulation Questionnaire was used to assess students’ motivational orientations, while appropriate subscales of the Self-perception Profile for Children measuring instrument were used to assess physical self-concept. Physical activity is shown as volume and intensive physical activity (vigorous physical activity (VPA)), measured with a Suunto memory belt pedometer and heart-rate monitor. Results: Boys’ motivational predictor variables accounted for 14% (volume) and 28% (VPA) of their physical activity in class, with intrinsic motivation, introjective regulation (just for the level of physical activity), and identified regulation as the most important determinants of physical activity. For girls, the identified regulation variable (from the system of motivational predictor variables) was shown to be the primary predictor variable on both criterion variables (R2 = 0.34 and 0.36). Conclusion: The teaching of physical education for students of younger school age should be conceived by creating a motivational climate, in order to encourage physical activity.
Beneficial Effects of Asparagus officinalis Extract Supplementation on Muscle Mass and Strength following Resistance Training and Detraining in Healthy Males
Authors: Denben Barakat , Sripinyowanich Siriporn , Ruangthai Ratree , Phoemsapthawee Jatuporn
Published: September 2023

The phytoecdysteroid 20-hydroxyecdysone (20E) is widely used for resistance training (RT). Little is known about its potential ergogenic value and detraining effects post-RT. This study aimed to examine the effects of 20E extracted from Asparagus officinalis (A. officinalis) on muscle strength and mass, as well as anabolic and catabolic hormones following RT and detraining. Twenty males, aged 20.1 ± 1.1 years, were matched and randomly assigned to consume double-blind supplements containing either a placebo (PLA) or 30 mg/day of 20E for 12 weeks of RT and detraining. Before and after RT and detraining, muscle strength and mass and anabolic and catabolic hormones were measured. This study found that 20E reduced cortisol levels significantly (p < 0.05) compared to the PLA, yet no effect was observed on muscle mass, strength, or anabolic hormones after RT. Subsequent to 6 weeks of detraining, the 20E demonstrated a lower percentage change in 1RM bench press/FFM than the PLA (p < 0.05). Compared to the PLA, detraining throughout the 12 weeks resulted in a lower percentage change in thigh (p < 0.05) and chest (p < 0.01) circumferences, as well as reduced cortisol levels (p < 0.01), with 20E. Our findings demonstrate that 20E supplementation is a promising way to maintain muscle mass and strength during detraining. Accordingly, 20E may prevent muscle mass and strength loss due to detraining by lowering catabolic hormone levels.
Educational Preparation and Course Approach of Undergraduate Sports Nutrition instructors in Large U.S. Institutions
Authors: Norton Kayla Marie , Davies Randall Spencer , LeCheminant James Derek , Fullmer Susan
Published: September 2023

College courses are often offered from various disciplines, and depending on which department offers the class, the course could be taught by faculty with different educational preparation or training. This could result in significant differences in the approach and content of the course (i.e., theoretical or applied) or a difference in the instructors’ perceived importance and, therefore, the depth and time spent on various topics. We evaluated potential differences in the sports nutrition curriculum because it is a course that is usually taught by either nutritionists or exercise physiologists. A cross-sectional survey was sent to sports nutrition instructors at accredited large U.S. institutions. Descriptive statistics were analyzed via an ANOVA and Χ2 using Crosstabs in Qualtrics. Alpha was set at p < 0.001. Additionally, short interviews with some participants were recorded and transcribed verbatim. The findings of this study indicated that regardless of the instructor’s educational preparation and discipline, the majority of sports nutrition topics received similar time and depth and were rated as similarly important (p > 0.001). Out of 10 current textbooks, the majority of instructors preferred only 1 of 4 of them. From the short interviews, instructors reported that their courses were more applied than theoretical or balanced between the two. Most instructors designed their courses with a focus on achieving applied outcomes.
Effects of Confining Stress on Blast-Induced Damage Distribution of Rock with Discontinuity
Authors: Pan Rongjian , Wang Peiyu , Zhou Zilong , Lan Riyan , Chen Lu , Yang Hongquan , Chen Cuigang , Zhang Jinkun , Liu Yang
Published: September 2023

Discontinuous rock mass, such as joints and fractures, have a great influence on the blasting quality and sometimes induce additional damage at the discontinuity. In deep rock engineering, high in situ stress makes the damage mechanism of rock with discontinuity under blasting loading more complicated. Quantitative analysis of blast-induced damage in discontinuous rock under high in situ stress is of great importance in guiding the fine blast design. In this paper, a series of numerical models have been established to quantitatively investigate the effect of confining stress and inclination angle on blast-induced damage of rock with discontinuity. The numerical results show that the discontinuity obviously changes the distribution mode of blast-induced damage, and there is more damage near the discontinuity. The blast-induced damage crack length of discontinuous rock decreases as hydrostatic stress rises. Under non-hydrostatic stress, the damage crack propagation appears to have a higher tendency in the higher confining stress direction. In addition, the inclination angle of discontinuity will affect the damage distribution of rock with discontinuity. The fragmentation degree is greatest when the discontinuity is perpendicular to the direction of higher confining stress. Due to the presence of discontinuity, the guiding effect of higher confining stress on damaged cracks is weakened. The results provide a reference for the tunnel fine-blasting design of rock with discontinuity.
Parameterization of a National Groundwater Model for New Zealand
Authors: Griffiths James , Yang Jing , Woods Ross , Zammit Christian , Porhemmat Rasool , Shankar Ude , Rajanayaka Channa , Ren Jeffrey , Howden Nicholas
Published: September 2023

Groundwater is a vital source of water for humanity, with up to 50% of global drinking water and 43% of irrigation water being derived from such sources. Quantitative assessment and accounting of groundwater is essential to ensure its sustainable management and use. TopNet-GW is a parsimonious groundwater model that was developed to provide groundwater simulation at national, regional, and local scales across New Zealand. At a national scale, the model can help local government authorities estimate groundwater resource reliability within and between regions. However, as many catchments are ungauged, the model cannot be calibrated to local conditions against observed data. This paper, therefore, describes a method to derive an a priori, reach-scale groundwater model parameter set from national-scale hydrogeological datasets. The parameter set includes coefficients of lateral (kl) and vertical (kr) conductivity and effective aquifer storage (S). When the parameter set was used with the TopNet-GW model in the Wairau catchment in the Marlborough region (South Island, New Zealand), it produced a poor representation of peak river flows but a more accurate representation of low flows (overall NSE 0.64). The model performance decreased in the smaller Opawa catchment (NSE 0.39). It is concluded that the developed a priori parameter set can be used to provide national groundwater modeling capability in ungauged catchments but should be used with caution, and model performance would benefit greatly from local scale calibration. The parameter derivation method is repeatable globally if analogous hydrological and geological information is available and thus provides a basis for the parameterization of groundwater models in ungauged catchments. Future research will assess the spatial variability of parameter performance at a national scale in New Zealand.
Skeletal Space Structure Systems: Select Areas of Opportunity to Achieve Sustainability in Construction
Authors: Maalek Shahrokh , Maalek Reza , Maalek Bahareh
Published: September 2023

This paper examines some of the largely neglected areas of opportunity to utilize skeletal space structure systems in support of the modular, industrialized, economical, sustainable, and digital future of the construction industry. In this context, the feasibility of the future use of skeletal space structures is studied for a few classes of engineering structures, namely, residential apartment buildings and offshore platforms, along with their suitability for the reconstruction, renovation, modernization, and retrofit of damaged buildings and urban areas of cultural heritage significance. Finally, the particular features of lean project management in space structures are discussed with emphasis on engineering and economic factors, production management, environmental aspects, quality management, reliability, maintainability, and sustainability. This article concludes that skeletal space structures can fulfil many of the essential construction requirements of modern societies, especially those facing environmental challenges, all while allowing for design flexibility and mass customization.
Resilience and Sustainable Urban Tourism: Understanding Local Communities’ Perceptions after a Crisis
Authors: Brochado Ana , Rodrigues Paula , Sousa Ana , Borges Ana Pinto , Veloso Mónica , Gómez-Suárez Mónica
Published: September 2023

This study sought to examine the coronavirus COVID-19 pandemic’s impacts on local communities whose residents are directly or indirectly affected by city tourism. Qualitative research was conducted via in-depth interviews and Leximancer software analysis to explore locals’ perceptions in two highly tourism-dependent southern European cities. While the crisis has had predominantly negative impacts on tourism, the pandemic’s positive effects could contribute to cities’ greater resilience and more sustainable tourism models. The results highlight the variables that residents perceive as having the most influence on city tourism, as well as providing insights into locals’ expectations for the future.
Building Resilient Communities: Rapid Response to a Crisis through Nusantara Module’s Character Education and Social Contribution Initiative
Authors: Fahmi Mohamad , Sarilita Erli , Wilar Gofarana
Published: September 2023

The primary objective of this research was to investigate the execution of the Nusantara Module program at Universitas Padjadjaran (Unpad), Indonesia, and examine its impact on participating students, emphasizing the program’s adaptability and response to the Cianjur earthquake catastrophe in 2022. This study used a mixed-method approach, combining the qualitative analysis of program papers and communication with the quantitative analysis of post-program surveys and verbatim analysis of student responses. This research revealed systematic methods such as regular meetings, rapid issue resolution, monthly reporting, rigorous evaluation, and post-program surveys. The findings show that students were quite satisfied with the cultural interchange, academic and non-academic learning experiences, hospitality, excursions, and amenities provided. However, areas for improvement were highlighted, including extending module destinations, resolving financial issues, addressing social integration obstacles, improving communication, addressing facility concerns, and improving program management. The contributions of this study extend to both academia and practice. Academically, this research augments the understanding of program management, student mobility, disaster response, and community engagement within the Indonesian educational landscape. Practically, this study provides a blueprint for educational institutions aiming to enhance the resilience and effectiveness of their programs in times of crisis. By elaborating on the implications and contributions of this research, we underscore its significant and far-reaching impact on educational practices, disaster management strategies, and community well-being.
Formaldehyde Removal by Expanded Clay Pellets and Biofilm in Hydroponics of a Green Wall System
Authors: Žorža Laura , Ceļmalniece Kristīne , Sieriņa Alise , Andersone-Ozola Una , Selga Tūrs , Ievinsh Gederts , Bērziņa Buka , Bartkevičs Vadims , Muter Olga
Published: September 2023

Air pollution with formaldehyde (FA) has been an emerging concern over recent years. This study was aimed at evaluating the contribution of green wall system-derived expanded clay pellets (ECP) and biofilms to FA removal in liquid phase. The effects of four plant species on this process were compared. An inhibition of the fluorescein diacetate hydrolysis activity of biofilm-derived microorganisms was detected during the exposure to FA in both air and liquid phases, and this effect was plant-species-specific. Liquid chromatography with a UV detector was applied for the quantification of FA. The FA removal activity of ECP in the liquid phase was 76.5 mg ECP−1 after a 24 h incubation in the presence of 100 mg/L FA, while the removal activity of the biofilm differed depending on the plant species used, with the highest values detected in the set with Mentha aquatica, i.e., 59.2 mg ECP−1. The overall FA removal from the liquid phase during 24 h varied in the range from 63% to 82% with the initial FA concentration of 100 mg/L. Differences in biofilm formation upon ECP enrichment were detected by using confocal laser scanning microscopy. These results contribute to the understanding of air biofiltration mechanisms in hydroponic systems.
Integration of Service-Learning Theory and Social Capital Theory in Volunteering Work for Sustainable Development: A Study of the Role of Education Curricula in Saudi Arabia
Authors: Alshammari Ali Essa A. , Thomran Murad , Alshebami Ali Saleh
Published: September 2023

Based on the ideas of service-learning theory and social capital theory, the study examines the role that educational programmes play in encouraging students to engage in volunteer work for sustainable development in Saudi Arabia. A total of 251 usable responses were gathered through an online survey. The conceptual framework for the study was established to analyse direct and indirect impacts. The study used partial-least-squares–structural equation modelling to estimate the inter-construct correlations that exist among the postulated variables and ran bootstrapping to examine the potential for causality in the research hypotheses. The impact of service work for sustainable development is broken down into two categories: service learning and social capital. The study has demonstrated that the antecedents of social capital theory, such as norms and values (β = 0.0293) and social support (β = 0.0001), exert a strong and positive influence on volunteering work in Saudi Arabia, whereas the antecedents of service-learning theory, such as service activities (β = 0.2288), learning outcomes (β = 0.9879), social ties/connections (β = 0.1167) and community engagement (β = 0.1601), have little or nothing to do with influencing volunteering work. This indicates that for volunteering to become accepted by society, policymakers need to give volunteers work that is rewarding by nature and focused on norms and values (NV) and social support (SS). The authors of this article propose a new strategy for managing knowledge in future volunteer activities due to the dearth of empirical research on the integration of service-learning theory and social capital theory in volunteering for sustainable development.