bluuebunny/crossref_metadata_2025 huggingface dataset:
Energy Efficiency and Stability of Micro-Hydropower PAT-SEIG Systems for DC off-grids
Authors: Catelas João M. R. , Fernandes João F.P. , Pérez-Sánchez Modesto , López-Jiménez P. Amparo , Ramos Helena M. , Branco P.J. Costa
Published: March 2024

Using pumps operating as turbines (PATs) offers the possibility of increasing the sustainability of water and energy systems by recovering the excess of energy that would be otherwise lost in pressure reducing valves or head loss chambers. In on-grid applications, there are many research works and implementations of PATs. However, there is still limited research for the optimization of efficiency and stability of PATs operating in off-grid systems. This work contributes to the development of stable direct current (DC) off-grid electric systems based on PATs, by optimizing and analysing the energy efficiency and stability for a wide range of operation. A self-excited induction generator (SEIG) coupled to the PAT is provided to cover the conventional type of electric ma-chines typically coupled to the hydraulic pumps. In this context, a methodology is proposed, based on the hydraulic, mechanical and electric subsystems, to define the PAT-SEIG operational area, to maximize energy conversion and the system efficiency. This will guarantee stable electric output quantities when operating in a DC off-grid system. In addition, an analytical model is proposed to estimate the PAT-SEIG operation under specific conditions. With this, water managers are suitable to design and optimize an off-grid PAT-SEIG system and to define the best hydraulic machines, electronic equipment, and all different control elements to maximize energy conversion within the target of operational limits. To develop and verify this new methodology, two micro PAT-SEIG setups were implemented in the hydraulic laboratory of IST/CERIS under typical operating conditions. The proposed solution proved to be resilient under a variable load regime. The system's maximum efficiency can be adapted using different capacitor values for the excitation of the SEIG, and the operational range is limited to the electric components. Considering the nominal efficiencies of the system’s components, the maximum p.u. efficiency obtained for each PAT-SEIG system were between 0.7 and 0.8 p.u.
Cognitive Profiles of Partial PTSD in Vietnam War Veterans
Authors: Song Jihye , So Hyung Seok , Choi Jin Hee , Choi Hayun , Lee Seung-Hoon
Published: March 2024

Despite the clinical significance of partial posttraumatic stress disorder (PTSD), research on its associated cognitive function profiles is notably lacking. This study aimed to identify distinct cognitive function profiles in patients with partial PTSD. Medical records of Vietnamese War Korean Veterans undergoing psychiatric assessments, including the Clinician-Administered PTSD Scale (CAPS) and neurocognitive tests on the same day, were retrospectively reviewed. The participants were divided into partial PTSD (N = 10) and non-PTSD (N = 36) groups based on the CAPS interview. Neurocognitive test score profiles of the partial PTSD and non-PTSD groups were compared. Covariance analysis adjusted for potential confounders in cognitive function. In cognitive profiles, executive function, mental flexibility (measured by Trail Making Test B), and concentration (measured by the Mini-Mental Status Exam) were significantly poorer in the partial PTSD group. When adjusted for age, depressive symptoms, and education level, no significant differences were observed in the cognitive profiles between the partial PTSD and non-PTSD groups. In the current study, executive function and concentration showed deficits in patients with partial PTSD compared with those without PTSD. Partial PTSD cognitive profiles displayed no significant differences from non-PTSD profiles when adjusted for possible confounders such as depressive symptoms.
Effects of Peer Competition-Induced Anxiety on MOOC Learning: The Mediating Role of Behavioral Inhibition System
Authors: Liu Cui , Fang Mengzhen , Wang Min , Wu Yifang , Chen Wen , Cheng Yahua
Published: March 2024

With the increased emphasis on competition in academic settings, anxiety is becoming more common, which inevitably has some impact on students’ learning process and result. This study aimed to explore how competition-induced anxiety influences the subjective cognitive load (SCL), attention level and test score. Meanwhile, we investigated the mediating role of the behavioral inhibition system/behavioral activation system (BIS/BAS) in those processes. A total of 101 college students were recruited in Study 1 to learn five micro-lectures from massive open online courses (MOOC) under with and without competitive conditions. The results showed that participants’ state anxiety (SA) scores were higher after the experiment, participants in the competition condition had higher test scores, and the relationship between SA/ trait anxiety (TA) and SCL could be mediated by the BIS. To obtain more objective data on learning processes (attention levels), we conducted Study 2, which collected behavioral and EEG data from 42 college students during the online learning. The results showed that the competition group had higher SA, lower attention levels, and worse test scores, and the relationship between SA/TA and attention levels could be mediated through the BIS. The present study not only expands previous research by finding that BIS functioning plays an important role in the effects of anxiety on cognitive load and attention, but also offers implications for using competitive strategies to motivate students according to their aptitude.
Deciphering Metabolic Pathways in High Seeding Density Fed-Batch Processes for Monoclonal Antibody Production: A Computational Modeling Perspective
Authors: Bokelmann Carolin , Ehsani Alireza , Schaub Jochen , Stiefel Fabian
Published: March 2024

Due to their high specificity, monoclonal antibodies (mAbs) have garnered significant attention in recent decades, with advancements in production processes, such as high seeding density (HSD) strategies, contributing to improved titers. This study provides a thorough investigation of high seeding processes for mAb production in Chinese hamster ovary (CHO) cells. Using a metabolic network and flux balance analysis, we compared standard fed-batch (STD FB) with HSD cultivations, exploring supplementary lactate and cysteine, and a bolus medium enriched in amino acids. We observed high glycolytic fluxes and depletion of asparagine simultaneously with the lactate shift building kinetic models around this and other observations. An ensemble of kinetic models assessed the impact of a feeding medium enriched with additional asparagine, revealing a missing lactate shift without enhancing mAb productivity in the experiments. This research provides valuable model-based insights into cellular metabolism during HSD processes, laying the foundation for refined CHO cell-based mAb production. The proposed hypothesis on the regulations guides future experimental validation and bioprocess optimization for enhanced mAb production efficiency.
Global, Regional, and National Prevalence of Chlamydiosis in Small Ruminants: Systematic Review and Meta-Analysis
Authors: Castro-Flores Rebeca , Gaxiola Soila M. , Diaz-Aparicio Efren , Rodriguez-Gaxiola Miguel A. , Montero--Pardo Arnulfo , Enriquez-Verdugo Idalia , Castro del Campo Nohemi , Bradi Milad , Hernandez-Carreño Pavel E. , Velazquez Diana Z. , Lizarraga Carlos , Avila-Butron Gerardo , Delgado-Suarez Enrique J. , Ramirez-Valdez Armando , Diaz Daniel
Published: March 2024

A systematic review and meta-analysis were conducted to estimate the prevalence of chlamydiosis in small ruminants. The study included 133 publications that reported the presence of Chlamydia abortus in 109 and 74 studies in sheep and goats from 45 countries. The prevalence of chlamydiosis was estimated at global, regional, and national levels using meta-analyses of proportions. Meta-regression and cumulative meta-analyses were also performed. Globally, the prevalence of chlamydiosis in sheep and goats was estimated at 20.1% (95% CI: 17.8-22.4) and 14.4% (11.6-17.4), respectively. For sheep, chlamydiosis prevalence was heterogeneous at regional and national levels. South Asia had the highest prevalence (30.6%) and East Asia and Pacific the lowest (14.0%). Nationally, chlamydiosis was more prevalent in Romania, Hungary, and Germany (range 53.3-87.0%) compared to Costa Rica, Australia, and Zimbabwe (4.7-5.2%). Among goats, chlamydiosis prevalence was similar across regions (10.4-19.7%), but varied significantly among countries, 0.0% in Romania and Australia and 91.7% in Bosnia and Herzegovina. In both species, sample size, number of diagnostic techniques, and latitude were significant covariates. Prevalence varied widely in the first decades of publications before stabilizing. Our study found a high prevalence of chlamydiosis in small ruminants, with the pathogen being distributed globally but heterogeneously across countries.
Emotional States and Suicidal Ideation among Adolescents
Authors: Belzunegui-Eraso Angel , Sánchez Aragón Anna , Pastor-Gosálbez Inma , Valls-Fonayet Francesc , Díaz-Moreno Verónica , De Andrés-Sánchez Jorge
Published: March 2024

Background: Mental health has a special relevance in adolescence. Therefore, this study aimed to analyze the possible association between emotional distress and suicidal ideation among adolescents.
Methods: The article presents the results of a survey of secondary school students (N=1419) in the city of Tarragona, Spain. The aim of the analysis was to verify the existence of an association between suicidal ideation and risk factors such as emotional distress and low self-esteem. All the data were also analysed to determine the existence of statistically significant differences between girls and boys. Bivariate analyses were performed with chi-square, point-biserial coefficient and non-parametric tests for independent groups. Logistic regression analysis was also performed to calculate the probability of suicidal ideation.
Results: These analyses showed that both emotional distress and low self-esteem increase the likelihood of suicidal ideation among adolescents. This was more evident among boys with high levels of emotional distress.
Conclusion: Schools should develop suicide ideation prevention programs for adolescents based on situations that cause emotional distress.
Residential Greenness, Lifestyle and Vitamin D: A Longitudinal Cohort of South Asian Origin and Caucasian Ethnicity Women Living in the South of the UK
Authors: Santana Keila Valente de Souza , Ribeiro Helena , Darling Andrea , Rios Israel Henrique Ribeiro , Lanham-New Susan
Published: March 2024

The global population is at risk of vitamin D deficiency due to low exposure to sunlight and low intake of the vitamin through diet. The aim was to investigate in women the association between vitamin D status and parathyroid hormone (PTH), ultraviolet radiation, lifestyle, ethnicity, social conditions, and residential greenness. A 1-year longitudinal study assessed vitamin D status in 309 women, latitude 51° 14' N. Blood samples were taken four times throughout the year for analysis of 25(OH)D and serum PTH concentration. After each seasonal visit, the individuals completed 4-day diet diaries and used two dosimeter badges for 1 week to estimate weekly UVR exposure. A questionnaire was applied to provide information about lifestyle and their ethnicity. Residential greenness was measured by Normalized Difference Vegetation Index (NDVI), within a 1000 m radius around each participant’s home address. Women living in greener spaces were more likely to have improved vitamin D status (RR: 1.51; 95%CI: 1.13 – 2.02), as well as those who were more exposed to UVR (RR: 2.05; 95%CI: 1.44 – 2.92). Our results provided a first insight into the connection between vitamin D, residential greenness, and lifestyle in a region of temperate climate and with a high degree of urbanization.
COVID-19-Related Stressors and Psychophysical Health Conditions Among Italian University Students: A Post Pandemic Insight
Authors: Cattaneo Della Volta Maria Francesca , Vallone Federica , Zurlo Maria Clelia
Published: March 2024

The COVID-19-medical emergency has ended worldwide, yet there is still a need to evaluate the psychological impact of these years of unprecedented changes on students’ life. Methods: This study aims to assess and compare COVID-19-related stressors (Relationships-and-Academic-Life; Isolation; Fear-of-Contagion) and psychophysical symptoms reported by university students in April-2020, April 2021, and April 2022. The predictive role of COVID-19-related stressors on psychophysical symptoms within each time was also tested. Data were collected among 637 university students in April-2020 (n = 197), April-2021 (n = 200), April-2022 (n = 240). Results: In April-2022, perceived Isolation and Fear-of-Contagion decreased from the peak registered in April-2021, but stress related to Relationships-and-Academic-Life remained noteworthy high. A sharp and ongoing increase in psychophysical symptoms was found, with more than 50% of students reporting clinical levels of Sleep-Disorders, Depression, Psychoticism, and Interpersonal-Sensitivity. In April-2022, students still perceiving stress related to Relationships-and-Academic-Life and Isolation were at risk for Anxiety, Somatization, and Sleep-Disorders, while those still perceiving stress related to Fear-of-Contagion were also at risk for Depression, Obsessive-Compulsive, and Psychoticism. Conclusion: Findings emphasized the long-lasting detrimental effects of the COVID-19-related stress. Interventions must pinpoint the complex post-pandemic adjustment process and their effects on university students' psychophysical health.
Wide-Angle Repeat Pass Bistatic SAR Interferometry: A Geometrical Introduction
Authors: Rocca Fabio
Published: March 2024

Keywords: SAR; interferometry; bistatic
A Best-Path Approach to the Design of a Hybrid Space-Ground Quantum Network with Dynamic Constraints
Authors: Bakker David L. , Jong Yannick , Dirks Bob P. F. , Amaral Gustavo C.
Published: March 2024

The design and operation of quantum networks are both decisive in the current push towards a global quantum internet. Although space-enabled quantum connectivity has already been identified as a beneficial candidate for long-range quantum channels for over two decades, the architecture of a hybrid space-ground network is still a work in progress. Here, we propose an analysis of such a network based on a best-path approach, where either fiber- or satellite-based elementary links can be concatenated to form a repeater chain. The network consisting of quantum information processing nodes, equipped with both ground and space connections, is mapped into a graph structure, where edge weights represent the achievable secret key rates, chosen as the figure of merit for the network analysis. A weight minimization algorithm allows identifying the best path dynamically, i.e., as the weather conditions, stray light radiance, and satellite orbital position changes. From the results we conclude that satellite links will play a significant role on the future large-scale quantum internet, and both a constellation of satellites and significant advances in filtering technology are required to fulfill continuous coverage.
The Collapse of the Vaults of the Ambato Matriz Church in the 1949 Earthquake: A Response with Technical Approach
Authors: López-Ulloa Fabián S. , Redondo Martínez Esther , Gil Crespo Ignacio Javier , Goyes-Balladares Andrea Cristina , Chávez-Rubio Luis Enrique
Published: March 2024

This research concerns the virtual reconstruction and technical constructive analysis of the emblematic and disappeared Matriz church of Ambato city, whose structure was demolished after the collapse of its vaults in the 1949 earthquake, about which it was said to have had deficiencies in its construction. Through an exhaustive historical review of documents and images, its constructive hypothesis was achieved, and using photogrammetry technique, its virtual reconstruction was obtained, where, through the interpretation and understanding of the generated plans, the verification of its technical and constructive characteristics associated with its hypothetical mechanical behavior inherent to its stone construction was carried out. For the structural study, the principle of the Limit Analysis of Structures was used, where through a graphic static approach, the technical stability conditions of a masonry structure are established, in this case, to give an interpretation to the possible poor execution of the church's work, and eventual cause that could have contributed to the collapse of its vaults.
Novel Calibration Approach for Freeway Traffic Models in Single and Multi-Regimes Fundamental Diagram
Authors: Raufi Parisa , maniat mohammad
Published: March 2024

The speed-density or flow-density relationship is a fundamental aspect of traffic flow theory. Single-regime models often face challenges in consistently fitting empirical data under diverse traffic conditions. This paper addresses the inaccuracies of single-regime models, attributing them not only to their functional forms but also to data dispersion and sample selection bias. To mitigate these issues, the data is segmented into day and night periods, leading to the creation of separate models for each. Calibration results, conducted on data from two freeways, Tehran-Karaj and Tehran-Qom, reveal distinct challenges, with the former exhibiting high dispersion and the latter showing low dispersion. Surprisingly, single-regime models demonstrate notable effectiveness when applied to distinct day and night data. Further analysis, categorizing data into day and night, results in reduced errors (20-60% improvement in R-Square), emphasizing the potential for enhanced accuracy by considering distinct regimes. Overall, the study underscores the significance of regime-specific considerations for accurate traffic flow modeling. Upon thorough evaluation, the study highlights the superiority of the neural network Multi-layer Perceptron (MLP) over traditional models. The research discusses the implications of incorporating day and night parameters into the models, emphasizing their potential for accuracy enhancement.
The Potential of Poplars (Populus L.) for the Sustainable Environment of Cities
Authors: Łukaszkiewicz Jan , Długoński Andrzej , Fortuna-Antoszkiewicz Beata , Fialová Jitka
Published: March 2024

Urban environments face escalating challenges, e.g. due to uncontrolled urbanization, rapid population growth or climate changes, prompting the exploration of sustainable solutions for enhancing urban green spaces (UGS). For this reason, poplars (Populus L.), due to their rapid growth, wide range adaptability to environmental conditions and versatility of use, would have emerged as very promising. This comprehensive review synthesizes current knowledge regarding poplar's application in urban landscapes, emphasizing its multifaceted contributions and benefits. However, challenges arise from the variable lifespans of different poplar cultivars, necessitating strategic management approaches. Selecting cultivars based on growth rates, root system characteristics, and adaptability to urban conditions is pivotal. Adaptive replanting strategies, incorporating species with varying lifespans, offer solutions to maintain continual greenery in urban landscapes. Collaborative efforts between researchers, urban planners, and policymakers are essential for devising comprehensive strategies that maximize benefits while addressing challenges associated with their variable lifespans. In conclusion, harnessing poplar's potential in urban greenery initiatives requires a balanced approach that capitalizes on their benefits while mitigating challenges. Further research and adaptive strategies are crucial for sustained and effective utilization in creating resilient and vibrant urban landscapes.
Archaeological Parks in the Service of Tourism - A Comparative Analysis of Hungarian and Western - European Archaeological Parks
Authors: Gálicz Ivett Vargáné , Magda Róbert , Dávid Lóránt Dénes
Published: March 2024

Our study reviews the significance of archaeological parks in the tourism sector, with a specific focus on how digital presence and visitor feedback impact their cultural and touristic appeal. Utilizing statistical analyses such as regression and cluster analysis on data sourced from both Hungarian and Western European parks, the research scrutinizes TripAdvisor and Google ratings, alongside the volume of photographs and reviews. The findings highlight a modest correlation between digital visibility and overall visitor ratings, underscoring the complex relationship between online engagement and the quality of visitor experience. Notably, the cluster analysis identified two distinct groups, signifying diverse levels of visitor engagement and digital visibility across the parks. The conclusions drawn advocate for a comprehensive strategy to enhance visitor experiences, emphasizing the integration of digital engagement with the promotion of the parks cultural and historical values. By exploring the influence of digital presence on the appeal of archaeological parks, our study sheds light on the evolving interface between urban studies and digital heritage, highlighting how digital tools and online platforms are becoming increasingly integral in shaping the perceptions and experiences of urban cultural sites.
Rainfall and Daily Average Temperature Prediction using Machine Learning: A Case Study of Bangladesh
Authors: Hussain Adil , Tripura Sajib , Aslam Ayesha
Published: March 2024

Heavy rains have created significant threats to human health and life. Floods and other natural disasters, which have a global impact annually, can be attributed to extended durations of intense precipitation. Accurate rainfall predictions are crucial in nations such as Bangladesh, where agriculture is the predominant occupation. The efficiency of machine learning (ML) methods is enhanced by the non-linearity of rainfall, surpassing the effectiveness of other alternative ways. Machine learning techniques show that individual classifiers exhibit worse accuracy than ensemble learning (EL) methodologies. Ensemble Learning techniques are utilized for rainfall prediction and estimating rainfall quantity and daily average temperature to enhance comprehension of the diverse Machine Learning algorithms. This research implements the machine learning techniques and ensemble-based classifier to predict the rainfall occurrence, along with the machine learning regressor models and ensemble-based regressor for the rainfall amount prediction and daily average temperature prediction, using Bangladesh Weather Dataset. The results of the machine learning and ensemble-based models are compared using the Accuracy and F1 score for rainfall occurrence prediction. In contrast, MAE and RMSE evaluation metrics are used for ensemble regressor and regression algorithms for the rainfall amount and daily average temperature prediction. With an accuracy of 83.41% and a recall of 78.17%, the Ensemble Classifier is the best at predicting when it will rain, but its precision of 51.16% stands in for the lowest. The Ensemble Regression model outperforms Linear Regression, Random Forest, and SVR in rainfall amount prediction, with the lowest MAE of 0.36 and RMSE of 0.90. The Ensemble Regression provides the most precise results for daily average temperature prediction with the lowest MAE 0.42 and RMSE 0.54 highlighting its superiority over the other regression models in forecasting temperature with less error. Ensemble approaches consistently lead task performance metrics.
Low-Volume Metastases in Cervical Cancer: Does Size Matter?
Authors: Bianchi Tommaso , Grassi Tommaso , Di Martino Giampaolo , Negri Serena , Trezzi Gaetano , Fruscio Robert , Landoni Fabio
Published: March 2024

The implementation of sentinel lymph node (SLN) biopsy is changing the scenario in the surgical treatment of early-stage cervical cancer and the oncologic safety of replacing bilateral pelvic lymphadenectomy with SLN biopsy is currently under investigation. One of the undisputed values of SLN biopsy is its diagnostic accuracy in detecting low-volume metastases (LVM) via pathologic ultrastaging. In early-stage cervical cancer, the reported incidence of LVM ranges from 4 to 20%. The prognostic impact and the role of adjuvant treatment in patients with LVM is still unclear. Some non-prespecified analyses in prospective studies showed no impact on the oncologic outcomes compared to node-negative disease. However, the heterogeneity of the studies, the differences in the disease stage and the use of adjuvant treatment, and the concomitant pelvic lymphadenectomy (PLND) make any conclusion on this topic hard. Current guidelines suggest considering micrometastasis (MIC) as a node-positive disease, while isolated tumor cells (ITC) as a node-negative disease, with a low level of evidence. This review aims to highlight the unanswered questions about the definition, identification, prognostic and therapeutic role of LVM and underline the present and future challenges we are facing. We hope this review will guide further research, giving robust evidence on LVM and their impact on clinical practice.
Subcrestal versus Bone Level One Stage Implants: Early Bone and Soft Tissues Modification. One Year Randomized Clinical Trial.
Authors: Mensi Magda , Scotti Eleonora , Calza Stefano , Salgarello Stefano , Sordillo Annamaria , Zola Matteo , Lops Diego
Published: March 2024

Background: One challenge in implant dentistry is to reduce marginal bone resorption to avoid long-term esthetic and biological complications. Sub-gingival implant placement has been suggested as a suitable strategy.
Methods: 38 healthy patients were enrolled to receive bone level (BL – Control group) or 2 mm sub-crestal (SC - Test group) conical connection, platform-switched implants. An immediate tissue level abutment was used in the Test group by following a One Time Abutment (OTA) restorative procedure. Marginal Bone Modification (MBM) was calcu-latied on standardized radiographs at surgery (T0), loading (T1), and 6 months (T2) and 12 months after loading (T3), and cathegorised in Bone Loss (BL) if the resorption occurred below the implant neck and Bone Remodeling (BR) if above. Pocket probing depth (PPD), Bleeding on probing (BoP) and Plaque Index (PI) were also collected.
Results: The mean MBM in the test group after 12 months was 0.61mm, compared to 0.52mm in the control group. However, no BL was observed in the test group, as the MBM completely occurred above the implant neck as BR, whilst in the control group MBM corresponded in total to BL. The average PPD was 2.38mm in the test group and 3.04mm in the control group after 12 months, BoP 50% and 43%, PI 33% and 19.44% respectively.
Conclusions: Sub-crestal conical connection, platform-switched implants could be a suitable clinical choice to avoid BL with exposure of the treated implants surfaces.
Cosmography of the Minimally Extended Varying Speed of Light Model
Authors: Lee Seokcheon
Published: March 2024

Cosmography, as an integral branch of cosmology, strives to characterize the Universe without relying on pre-determined cosmological models. This model-independent approach utilizes Taylor series expansions around the current epoch, providing a direct correlation with cosmological observations and the potential to constrain theoretical models. Various observable quantities in cosmology can be described as different combinations of cosmographic parameters. Furthermore, one can apply cosmography to models with a varying speed of light. In this case, the Hubble parameter can be expressed by the same combination of cosmographic parameters for both the standard model and varying speed of light models. However, for the luminosity distance, the two models are represented by different combinations of cosmographic parameters. Hence, luminosity distance might provide a method to constrain the parameters in varying speed-of-light models.
Bioaerosol Exposure during Sorting of Municipal Solid, Commercial and Industrial Waste: Concentration Levels, Size Distribution, and Biodiversity of Airborne Fungal
Authors: Duquenne Philippe , Simon Xavier , Coulais Catherine , Koehler Véronique , Degois Jodelle , Facon Brigitte
Published: March 2024

A study was carried out in a Waste Sorting Plant (WSP) located in France and treating dry recyclable household waste (DRHW) as well as dry recyclable commercial and industrial waste (DRCIW). The aim was to investigate the exposure to bioaerosol and dust. The aim of the study was to assess the extent to which the measurement of concentration, species composition and particle size distribution can contribute to a better assessment of the biological risks associated with exposure. Both stationary and personal bioaerosol and dust samples were collect in the (WSP). The results confirm that waste and waste sorting activities are sources of airborne fungi. Indeed, ambient concentrations ranged from 7.3×103 to 8.5×105 CFU/m3 for culturable moulds and up to up to 4 mg/m3 for dust. Personal exposure to inhalable dust was found up to 3 mg/m3 for dust and ranged from 8.6×103 to 1.5×106 CFU/m3 for fungi. Airborne fungal communities were found to be dominated by the Penicillium genera in both bioaerosols and settled dust samples, followed by the Aspergillus, Cladosporium, Wallemia, Mucor, and Rhizopus genera. Fungi were carried by particles of aerodynamic diameters mainly between around 2.0 and 10.0 µm. The findings dealing with size distribution and biodiversity of bioaerosols suggest that employees are exposed to complex bioaerosols during their work and helps to make a finer diagnosis of the risks involved, which is often difficult in the absence of any OEL for bioaerosols in general.
The Use of Sargassum spp. Ashes Like a Raw Material for Mortars Production: Composite Performance and Environmental Outlook
Authors: Lyra Gabriela Pitolli , Colombo Ana Letícia , Duran Afonso José Felício Peres , Parente Igor Machado da Silva , Bueno Cristiane , Rossignolo João Adriano
Published: March 2024

The accumulation of brown algae from the genus Sargassum has been increasing over the years in coastal regions of the Caribbean, Africa, Brazil, and Mexico. This causes harmful effects to the ecosystem, health, economy, and climate due to gas emissions from its decomposition process. There is the possibility of this biomass being reused in civil construction, and few studies have been carried out on its application to common Portland cement mortar. As such, the objective of this study is to evaluate the potential of sargassum ash as a mineral addition to partial replacement of fine aggregates in Portland cement mortar. Characterizations of the raw materials were carried out through X-ray fluorescence spectroscopy, loss on ignition, particle size distribution, Brunauer–Emmett–Teller (BET), real density, X-ray diffraction, scanning electron microscopy, and dispersion spectroscopy of electrons. The mortars were prepared by partially replacing the fine aggregate (sand) with sargassum ash, at 0%, 5%, 10% and 20%. Mortar performance was evaluated through water absorption, apparent porosity, apparent specific mass, compressive strength after 7, 28, and 63 days after curing. Lastly, a life cycle assessment in accordance with ISO standards 14040:2006 and 14044:2006. The results showed that replacing sand with sargassum ash increases water absorption, apparent porosity, and decreases the apparent specific mass and compressive strength as replacement increases. Nevertheless, the compressive strength results after 63 days, for 5 and 10% replacement did not differ statistically from reference values. The life cycle assessment indicates that mortars with partial replacement of sand by sargassum ash showed positive environmental impacts when compared to reference values for most categories regardless of the scenario analyzed, especially for mortar with 10% replacement. As such, the use of sargassum ash at 10% does not alter compressive strength values after 63 days while reducing its environmental impact. The application of this biomass in civil construction materials provides a destination for this algae that has been causing several social, environmental, and economic problems.
Beyond Coping and Adaptation: Towards a Sociology of Coaching. A Necessary Paradigm Shift to Address Contemporary Dramatic Social Change
Authors: Stănciulescu Elisabeta
Published: March 2024

This article discusses how, in today’s world of disruptive and dramatic social change (DSC), non-sports related coaching, which includes a wide range of services such as life coaching, career coaching, executive coaching, and team coaching, can inadvertently fuel undesirable social dynamics. There is little or no awareness of this risk among coaches and coachees. The global, fast-growing, multi-billion-dollar industry aimed at supporting people and organisations to perform better and increase wellbeing while managing and adapting to change has been developed with limited sociological input. The article is based on 15 years of social constructionist-informed reflective practice by a sociologist-turned-coach, and uses a multi-layered autoethnographic account to argue for a sociologically informed paradigm shift in coaching, as well as relevant sociological knowledge and social and human sciences research methodology in coaches’ education. It presents the rationale and key features of a new coaching approach that places DSC-relevant sociological concepts at the heart of the coaching process, helps people develop psycho-sociological awareness, and uses a learning-to-develop through research design. A new definition of coaching to address DSC is derived. Coaching practitioners will find DSC-relevant sociological concepts, critical reflections, coaching questions, and procedures to expand coaching effectiveness. Interdisciplinary research topics combining coaching sociology and coaching psychology are suggested.
Exploring Entrepreneurial Attitudes among Sports Domain Students: A Comparative Analysis of Transition Perspectives and Challenges
Authors: Ștefănică Valentina , Ursu Vasile Emil , Groza Gina Gogean , Muntean Raul Ioan , Dragoș Gheorghe Cristian , Roșu Daniel
Published: March 2024

This research investigates entrepreneurial attitudes among 415 students in the academic sports domain. Utilizing a 15-item questionnaire, participants were categorized into four groups based on their sports background: individual and team sports with competitive history, amateur athletes, and non-practitioners. The questionnaire exhibited good internal consistency (Cronbach's alpha coefficient = 0.755). Statistical analysis using the Chi-Square Test of Homogeneity across criteria such as gender, competitive sports involvement, type of competitive sports, and engagement in amateur sports revealed significant differences in nine out of 60 comparisons. Furthermore, this study employs an explanatory approach to elucidate the distinctions among athletes, amateur, and non-athlete students in academic sports programs regarding assumption of responsibilities, proactive initiative, determination to establish their own businesses, perception of the comfort zone, and the perception of post-sports career adaptation. Additionally, a gender comparison is conducted concerning the perception of business risk, comfort and security in a stable workplace, and the applicability of sports-oriented approaches in business. These results provide valuable insights into how sports backgrounds shape entrepreneurial perspectives, thereby contributing to the development of customized entrepreneurial programs. Moreover, the study seeks to offer a nuanced comprehension of the diverse factors influencing the entrepreneurial attitudes and perceptions of students in sports academic programs.
High-Efficiency Polishing of Polymer Surface Using Catalyst-Referred Etching
Authors: Toh Daisetsu , Takeda Kodai , Kayao Kiyoto , Ohkubo Yuji , Yamauchi Kazuto , Sano Yasuhisa
Published: March 2024

Previously, we developed an abrasive-free polishing technique called catalyst-referred etching (CARE) for inorganic materials. In this method, the topmost site of the workpiece surface is preferentially removed via an indirect hydrolysis reaction promoted by a metal catalyst. In this study, we proposed applying the CARE method to polymer material polishing and demonstrated the polishing characteristics. Using the CARE method, polycarbonate, which has an easy cleavage of ester bond via hydrolysis, was polished, resulting in the smoothness of the surface roughness below 1.0 nm. Based on the surface observations, the removal mechanism was estimated as follows. Molecule chains are entangled to form clusters constituting the polymer surface and help determine the surface roughness. In the CARE method, the top of this cluster was selectively removed, thus creating a smooth surface. Polymers with C–C bonds, such as polymethyl methacrylate and fluorinated ethylene propylene, were also smoothed using the CARE method. These results indicate that the CARE method is highly effective in polishing polymer materials.
Rumeli Kazaskeri Sahhaf Şeyhzâde Es-Seyyid Mehmed Efendi’nin Kazaskerliği ve Mülâzemet Sistemindeki Değişimlerin Rûznâmçelerine Etkisi
Authors: Demirel Tacettin , Savaş Saim
Published: March 2024

Osmanlı ilmiye teşkilatı ve mülâzemet sisteminin işler yapısını bir düzene koymak, adli, eğitim-öğretim ve ifta işlerini bir düzen içerisinde yürütmek amacıyla birçok kanunnâmenin varlığı bilinmektedir. Özellikle 16. yüzyıldan 18. yüzyılın ilk çeyreğine değin Osmanlı ilmiye mesleğine girişin temeli niteliğinde olan mülâzemet sistemine bir işlerlik yapısı kazandırmak ve ilmiye mesleğine girmek isteyen talebeleri gerek sayısal gerek nitelik bakımından kontrol etmek amacıyla birçok düzenleme bulunmaktadır. Bu bağlamda iş bu çalışmada 18. yüzyılın ilk çeyreğinde Sahhaf Şeyhzâde es-Seyyid Mehmed Efendi’nin kazaskerliği öncesi ve döneminde mülâzemet sistemine dair çıkarılan beş adet hatt-ı hümâyûnun Sahhaf Şeyhzâde’nin tuttuğu rûznâmçelere ne derece yansıdığı ve düzenlemelerin uygulanıp uygulanmadığı sorgulanmıştır. Sorgulama neticesinde bahsi geçen bu beş adet düzenlemenin etkilerinin Rumeli kazaskeri Sahhaf Şeyhzâde’nin kayıt altına aldığı rûznâmçelerde görüldüğü, mülâzemet sisteminin işler yapısının değişime uğraması bakımından çıkarılan hatt-ı hümâyûnların, mülâzemet sistemi üzerinde bir değişime sebep olduğu, istisnalar dışında çıkarılan beş adet düzenlemeye uygun hareket edildiği tespit edilmiştir. Her ne kadar Sahhaf Şeyhzâde’nin kazaskerliği öncesi ve döneminde çıkarılan mezkûr hatt-ı hümâyûnlar, mülâzemet sistemi üzerinde bir değişim ve dönüşüm meydana getirse de söz konusu bu hükümler, mülâzemet sistemi özelinde kronikleşen sorunların varlığını ve bu sorunların hala çözülemediğini işaret etmektedir.
Breadcrust Bomb Merapi: Geological-Inspired Culinary Art and Socio-Cultural Empowerment in Merapi Region
Authors: Riswandi Herry , Tania Dina
Published: March 2024

This scientific article explores the creation of Breadcrust Bomb Merapi, a culinary art inspired by the geological features of Mount Merapi in Yogyakarta, Indonesia. The study aims to promote socio-cultural empowerment and geology education while supporting local communities surrounding Mount Merapi. The research methodology involved direct interviews with residents of the South Slope of Mount Merapi to identify the most popular products among tourists and the feasibility of their development. The selection process led to the production of Breadcrust Bomb Merapi, a cake resembling the explosive eruptions of Merapi, featuring a crust-like texture with a soft interior filled with melted cheese, symbolizing hot lava. The legal aspects of the creation were ensured through copyright registration. The results demonstrate the successful integration of geological inspiration into culinary art, providing a unique Merapi culinary experience for visitors and offering socio-cultural and economic opportunities for the local community. The implication of this study lies in its contribution to geotourism, ecotourism, and the preservation of local cultural heritage while fostering socio-economic development in the Merapi region.

Highlight:

Natural beauty and geological evolution of Mount Merapi

Breadcrust Bomb Merapi: Culinary art inspired by explosive eruptions

Socio-cultural empowerment through local culinary development

Keyword:

Mount Merapi, Breadcrust Bomb Merapi, Geology-Inspired Culinary Art, Socio-Cultural Empowerment, Tourism
Enhancing Seaweed-Based Dodol Production in Coastal Communities: A Case Study of Gracillaria verrucosa in Wisata Bahari Tlocor, Indonesia
Authors: Hudi Lukman , Budiandari Rahmah Utami , Prihatiningrum Andriani Eko
Published: March 2024

This scientific article presents a case study on the development and implementation of a training program aimed at enhancing the production of seaweed-based dodol in Tlocor Kedungpandan Jabon Hamlet, Indonesia. Gracillaria verrucosa, an agar-producing red algae, holds promising potential for cultivation alongside shrimp and milkfish rearing. The study utilized a survey to assess the area's potential, engaged with local communities to identify challenges, and designed a training program accordingly. The training involved demonstrations and guidance on seaweed processing, handling, packaging, and marketing. The goal was to empower the community to produce high-quality seaweed dodol as a form of Small and Medium Enterprises (SMEs) and provide unique local products for Wisata Bahari Tlocor, the tourist destination. The results demonstrated that with proper training and support, the community could independently produce quality seaweed dodol, thereby increasing their socio-economic well-being. The findings suggest the need for continued support in product development, packaging, marketing, licensing, and capital investment to fully leverage the potential of seaweed-based products in the region. This study highlights the significance of community-based initiatives in promoting sustainable economic growth and preserving local culinary heritage through seaweed-based dodol production.

Highlight:

Potential of Gracillaria verrucosa: This study explores the untapped potential of Gracillaria verrucosa seaweed as a valuable resource in aquaculture and as a basis for high-value processed products.

Dodol Production and Economic Value: The research emphasizes the importance of developing seaweed processing techniques to create "dodol" products with enhanced economic value and nutritional benefits.

Community-Based Approach: The article highlights the significance of community involvement and empowerment in promoting sustainable development and improving local livelihoods through seaweed-based products.

Keyword: Gracillaria Verrucosa, Seaweed Processing, Dodol Products, Community Empowerment, Sustainable Development
Environmental Management and Creative Economy through Technology-Based MSME Enterprises
Authors: Ambarwati Rita , Sulistiyowati Wiwik , Anshori Izza , Utomo Anggitha Listyo , Zanubah Nur Aniqotus , Nuriyanti Shinta
Published: March 2024

This scientific article presents the outcomes of a community service initiative in Sumbergedang Village, Pandaan District, Pasuruan Regency, aimed at instilling a culture of environmental care and nurturing the creative economy. The study implemented various work programs, including the development of Information Technology-Based Micro, Small, and Medium Enterprises (MSMEs). Employing a mixed-methods approach, the research demonstrated significant improvements in people's motivation to create a cleaner and more comfortable environment while bolstering the growth of the community's creative economy. The implications of this study highlight the potential for similar interventions to drive positive environmental and economic changes in rural communities worldwide.

Highlights:

Development of Information Technology-Based MSMEs: The study focuses on leveraging modern technologies to support the growth of Micro, Small, and Medium Enterprises (MSMEs) in the community.

Environmental Stewardship: The initiative aims to instill a sense of responsibility and care for the environment among the residents of Sumbergedang Village.

Nurturing Creative Entrepreneurship: The project fosters an environment that encourages innovation and creativity, leading to the development of the community's creative economy.

Keywords: Environment, Creative Economy, MSME, Information Technology, Community Service
Efficiency and Productivity of Zakat Management Organization Before and During Pandemic Covid-19
Authors: Ardiani Ninda , Latifah Fitri Nur , Sudarso Satrio , Tiswanah Nuris
Published: March 2024

This study investigates the efficiency and productivity of zakat institutions in Indonesia before and during the Covid-19 pandemic using Data Envelopment Analysis (DEA) and the Malmquist Productivity Index (MPI). Our findings reveal that three out of the five zakat institutions exhibited efficiency at different periods. Notably, LAZ Al Azhar demonstrated consistent efficiency both before and during the pandemic, while LAZISNU was efficient in 2019-2020 but experienced inefficiency in 2021. Additionally, LAZ Rumah Zakat exhibited an increase in efficiency in 2020 but regressed to inefficiency in 2021, primarily attributed to excessive distribution of ZIS funds in each institution. These findings highlight the urgent need for standardization and optimization of zakat management to unlock its immense potential for equitable distribution and impact during times of crisis, offering valuable insights for policymakers and zakat institutions globally.

Highlights:

Standardization and Optimization: The absence of standardized zakat management contributes to suboptimal collection and distribution of zakat funds in Indonesia.

DEA and MPI Analysis: Data Envelopment Analysis (DEA) and the Malmquist Productivity Index (MPI) serve as effective methods to evaluate the operational efficiency and productivity of zakat institutions.

Implications for Global Zakat Institutions: Understanding the dynamics of zakat efficiency during crises can offer valuable insights for similar institutions worldwide to enhance their distribution impact and resource management.

Keywords: Zakat institutions, Efficiency, Productivity, Indonesia, Covid-19 pandemic.
The Effect Of ZPT Types and Concentration on The Growth Of Kebiul Plant Cuttings (Caesalpinia bonduc L.)
Authors: Heryanto Valen , Harini Ririn , Podesta Fiana , Fitriani Dwi , Usman Usman
Published: March 2024

The purpose of this study is to find out the effect of ZPT types and concentrations on the growth of cuttings of Kebiul plants (Caesalpinia bonduc L). The design used is a factorial complete randomized design (CRD) with 2 factors, namely the first factor is the type of Growth Regulatory Substance  Giberelin, Auxin and Cytokinins, while the second is concentration control, 15 mg/l, 30 mg/l, and 45mg/l. Based on the tested levels of the two factors, 12 treatment combinations were obtained. Each treatment combination was repeated 3 times and 36 experimental units. The results of this study indicate that the interaction has no significant effect between the types of synthetic ZPT treatments and concentrations on all parameters and observations. The results of the study were analyzed using Analysis of Variety and if they had a significant effect, further tests were carried out using Duncan's Multiple Range Test (DMRT) at 5% level. Treatment of synthetic ZPT types significantly affected the length of shoots 9.12 WAP and the number of shoots 9 WAP, very significantly affected the number of shoots 3.12 MST, the number of leaves 9.12 WAP, root length and number of roots. Treatment Concentration had a significant effect on the number of shoots 9 MST, and the percentage of living cuttings, however it had a very significant effect on shoot length 3, 6, 9 MST, number of shoots 6, 12 MST, number of leaves 3, 6, 9 12 MST, root length and number of roots on Kebiul plant cuttings.