bluuebunny/crossref_metadata_2025_split huggingface dataset:
Trends and variation of PM2.5 in Antananarivo in the capital city of Madagascar
Authors: Mbolanjara Hélène , Rakotomavo Zo , Geiser Linda , Marline Lovanomenjanahary 
Published: November 2024

Abstract

This study aims to evaluate the temporal variations of PM2.5 concentration , as well as its daily variation during the fire season in 2023 in tropical settings like Antananarivo Madagascar. PM2.5 concentrations were recorded in 8 localities using PurpleAir low-cost devices for one year. We then establish air quality patterns in conjunction with meteorological and environmental factors that may influence variations in PM2.5 concentrations. The annual PM2.5 concentrations ranged between 21.6 μg/m3-31.9 μg/m3, exceeding the World Health Organization annual threshold (5 μg/m3), where the daily PM2.5 concentrations were in the range 8.4 –130.42 μg/m3. During May-June the percentage of days where the air quality was unhealthy for sensitive groups is above 30%. It increased to 70% in October and November. A bimodal pattern with higher concentration during the morning (02:00 - 07:00 a.m) and evening (05:00-09:00 pm) were found. Dry weather, rainfall and atmospheric stability influenced the daily PM2.5 variations. Low wind speed and atmospheric stability favor its accumulation and increase the concentration of PM2.5.
The effect of TeamSTEPPS@ mobile based learning on operating room efficiency
Authors: Amiri Fardin , Sohrabi Mohammad Reza , Hannani Seddigheh , Azadi Nemam Ali 
Published: November 2024

Abstract

Introduction:
Optimizing the operating room (OR) utilization is critical to maximize production and minimize cost by increasing efficiency in the OR. This research was conducted with the aim of determining the effect of TeamSTEPPS® mobile-based learning on OR efficiency.
Methods:
The present study was a semi-experimental study that the researcher conducted to measure the efficiency of ORs before and after the intervention in 2024. The research sample included all ORs and 105 OR staff of six medical education centers of IUMS. The research tool included a demographic characteristics and a researcher-made form to determine OR efficiency.
To conduct the research, the training content of the TeamSTEPPS® course was sent to the research participants through mobile phone messengers during five sessions, Then, the data related to the efficiency of the OR was collected from two months before and two months after the educational intervention from the medical records archive unit. Finally, the data before and after the intervention were compared. Statistical analysis was done using paired t-test. The significance level was considered 0.05.
Results:
The results showed that TeamSTEPPS® mobile learning was not effective on OR efficiency indicators such as the The start time of the first surgery (p>0/05), The rate of surgery cancellation (p>0/09), Case duration accuracy (p>0/08), Off-hour surgery (p>0/12), OR utilization (p>0/33), Surgeon time (p>0/49) and Turnover (p>0/67).
Conclusion:
Considering that TeamSTEPPS® mobile phone learning does not affect OR efficiency indicators, it is suggested not to use this training method to increase OR efficiency.
Inflammatory Burden Index as a predictor of mortality in septic patients: A retrospective study using the MIMIC-IV Database
Authors: Zhong Zhitao , Fan Mingyan , Lv Lukai , Long Qiong , Li Kefeng , Xu Ping 
Published: November 2024

Abstract

Purpose
Previous studies have identified the Inflammatory Burden Index (IBI) as a potential predictor of mortality risk in inflammatory diseases. However, its relationship with mortality rates specifically in septic patients has not been thoroughly investigated. This study aimed to explore the association between IBI and mortality risk in patients with sepsis.
Patients and methods:
We sourced clinical records of 1,828 septic patients from the MIMIC-IV (3.0) dataset. The primary endpoint was mortality within 28 days, with secondary endpoints including mortality during ICU stays and throughout hospitalization. Patients were categorized into quartiles based on their LnIBI levels. Binary logistic regression was utilized to examine the independent influence of IBI on mortality outcomes, adjusting for confounders. Additionally, the association between IBI and these outcomes was explored using restricted cubic splines and Kaplan-Meier analysis.
Results
The study involved 1,828 septic patients, including 1,047 males. The all-cause mortality rates were 17.78% (325/1828) within 28 days, 17.34% (317/1828) during ICU stays, and 18.22% (333/1828) over the course of hospitalization. In the adjusted model, a positive correlation was found between Ln IBI and mortality at 28 days (OR 1.093[1.014, 1.179], P = 0.021), during ICU stay (OR 1.106[1.025, 1.195], P = 0.01), and throughout hospitalization (OR 1.1[1.022, 1.187], P = 0.012). The analysis using restricted cubic splines showed a linear correlation between LnIBI and mortality risks. Kaplan-Meier plots revealed significantly lower survival rates for patients in the highest quartile of Ln IBI (P < 0.001).
Conclusion
Elevated IBI values are significantly linked with higher mortality risks within 28 days, during ICU, and throughout the hospitalization period in septic patients.
Dual Polarised Surface Plasmon Coupled Emission Tuning of Rhodamine B on SPR Metal Sensors
Authors: Vijayan Ajeesh P , Sreelak A. , Sharin Fasna , Dhandapani Kuppathil R. , Kannan Pradeesh 
Published: November 2024

Abstract

Surface plasmon coupled emission steering and emission tuning (SPCET) were demonstrated from metal-dielectric bi-layered structures in Reverse Kretschmann configuration. Rhodamine B dye doped Poly Vinyl Alcohol emissive layer was deposited on top of metal thin films (Silver, gold and copper) to realise bi-layered SPCET sensors. Apart from conventional p-polarised emissions, all sensor chips showed s-polarised emissions as well. These dual polarised emissions indicate a strong correlation between surface plasmon resonance and SPCET. Thickness of the dielectric layer show a major impact on the correlation between surface plasmon resonance and SPCET. Both p- and s- polarised emissions showed spectral narrowing. For thicker dielectrics, a decrease of 42% in the emission peak width was observed for p-polarised modes and was observed to be a constant for all metal sensors.
Cyber victimization experience, uncertainty stress, and internet self-efficacy as predictors of negative bystander behavior in cyberbullying among adolescents: a moderated mediation model
Authors: Chen Rui , Ming Dan , Hao Xin , Hu Zhen , Zhao Min , Fan Cuiying 
Published: November 2024

Abstract

Background
The prevalence of cyberbullying has become an alarming social issue among adolescents and has brought about a variety of negative outcomes on adolescents’ mental health. Bystanders’ behavior has been shown to be related to the outcomes of cyberbullying incidents. Although previous studies have demonstrated cyber victimization experience as a vital predictor of negative bystander behavior in cyberbullying, the underlying mechanism of the relationship between the two remains relatively unclear. This study investigated the association between cyber victimization experience and negative bystander behavior in cyberbullying among adolescents and the role of uncertainty stress and internet self-efficacy underlying this relationship.
Methods
A total of 826 Chinese high school students (Mage=15.82 years, SDage=0.68, 49.88% female) completed the Cyber Victimization Scale, the Uncertainty Stress Scale, the Internet Self-Efficacy Questionnaire, and the subscale of the Bystander Behavioral Intention Questionnaire in Cyberbullying. Moderated mediation effect analysis was used to test the hypothesis.
Results
The results revealed a significant positive correlation between cyber victimization experience and negative bystander behavior in cyberbullying among adolescents. Uncertainty stress mediated the relationship between cyber victimization experience and negative bystander behavior in cyberbullying, whereas internet self-efficacy moderated the latter half of the mediation pathway. Specifically, compared to adolescents with higher internet self-efficacy, the association between uncertainty stress and negative bystander behavior in cyberbullying is greater for adolescents with lower internet self-efficacy.
Conclusions
These findings broaden our understanding of the psychological processes that underlie the association between cyber victimization experience and negative bystander behavior in cyberbullying among adolescents and provide practical guidance on reducing the risks of cyberbullying.
High temperature induced brittle-ductile transition of monocrystalline silicon via in-situ indentation
Authors: Zhao Zerui , Li Xianke , Yang Xinhang , Wu Hao , Zhang Chi , Wang Shunbo , Zhao Hongwei 
Published: November 2024

Abstract

Monocrystalline silicon is difficult to molding process due to the unknown mechanism of temperature-influenced brittle-plastic transition. Indentation test of monocrystalline silicon from room temperature (RT) to 500 ℃ was carried out within scanning electron microscope (SEM). Evolution of surface damage mode at elevated temperatures were in-situ observed. Cracking and extrusion occurred during indentation of monocrystalline silicon from RT to 200 ℃, while shallow scallop-shell lateral peeling was found to be generated by a combination of secondary radial crack and shallow lateral crack. The phenomenon of surface peeling disappeared at 300 ℃. The plasticity of the material significantly increased. Dislocation motion coexists but competes with microcrack nucleation-expansion with temperature increasing. The completion of the brittle-plastic transition is evident at 500 °C. Cracks are no longer generated on the surface and pile-up phenomenon is enhanced. This discovery demonstrates the feasibility of plastic molding processing of monocrystalline silicon at high temperatures.
Global Burden Of Chronic Kidney Disease Due To Hypertension From Year 1990 To 2021 and Implications From Disparities Across Regions
Authors: Rao Xin , Luo Li , Huang Wenxia , Wang Zhuo , Zhou Xiaoyuan , Wang Xingyue 
Published: November 2024

Abstract

Background:
Chronic Kidney Disease due to hypertension poses a growing global diseaseburden, with significant disparities across regions. Comprehensive analysis and effective strategies should be provided to tackle the increasing issue.
Methods:
Using data from the Global Burden of Disease 2021, this study conducted descriptive and statistical analyses to evaluate the CKD burden due to hypertension across different SDI regions. EAPC,risk factors and decomposition were used to analyse the tread and distributional difference
Findings:
Globally, ASMR increased from 4.29 (95% UI: 3.55–5.11) per 100,000 in 1990 to 5.54 (95% UI: 4.68–6.41) in 2021, with a 0.97% annual increase. High SDI regions saw a sharp rise, with ASMR climbing from 2.4 (95% UI: 1.95–2.86) to 4.09 (95% UI: 3.34–4.71) and an EAPC of 2.23%. Low SDI regions experienced a slight decline in ASMR from 8.69 (95% UI: 7.03–10.73) to 8.62 (95% UI: 7.09–10.51). High systolic blood pressure and kidney dysfunction have consistently been the leading risk factors, female have a higher risk of high body-mass index than men, especially in high SDI regions.Decomposition highlights aging and epidemiological shifts，East Asia demonstrated a unique trend, with a 49.59% reduction in ASMR, ASDR and ASPR despite an aging population, reflecting successful interventions.
A Bibliometric Study of Blended Learning in Higher Education (2001- 2024)
Authors: Li Xin , Huang Malaysia Zexun 
Published: November 2024

Abstract

This study presents a comprehensive bibliometric analysis of blended learning in higher education (BLHE) research from 2001 to 2024. Using CiteSpace, we analyzed 2,125 publications from the Web of Science Core Collection to map the intellectual structure and evolution of the field. Our findings reveal a significant increase in BLHE research from 2013 onwards, with peak productivity in 2018 and 2019. Conference proceedings emerged as dominant publication venues, reflecting the field's dynamic nature. Document co-citation analysis identified influential works, with Garrison and Kanuka's (2004) Community of Inquiry framework emerging as particularly impactful. Cluster analysis revealed 11 distinct research areas, including blended learning foundations, self-regulated learning, game-based learning, and work-integrated learning. These clusters highlight the multifaceted nature of BLHE research and its integration with various pedagogical approaches and technologies. Our analysis also uncovered several research gaps, including a need for more diverse cultural perspectives, longitudinal studies examining long-term impacts, and research on innovative assessment strategies in blended environments. While the field has made significant progress in understanding BLHE implementation, challenges remain in addressing cultural diversity and long-term effectiveness. This study provides researchers, educators, and policymakers with insights into the field's intellectual structure, emerging trends, and future directions. As blended learning continues to shape higher education, addressing identified research gaps will be crucial for developing more effective, inclusive, and transformative learning experiences.
Managerial intelligence, quality of work life and job performance: the experience of nurses in selected public hospitals in Tehran- Iran
Authors: Ahmadi Fatemeh Zahra , Mosadeghrad Ali Mohammad , Ranjbaran Simin , Takian Amirhossein 
Published: November 2024

Abstract

Background
The quality of work life and managerial Intelligence are important determinants of nurses’ job performance. This study aimed to investigate the relationship between managerial Intelligence and quality of work life and nurses’ job performance in selected referral hospitals affiliated with the Tehran University of Medical Sciences (TUMS), in 2022, in Tehran-Iran.
Methods
This is a descriptive-analytical and cross-sectional research. Our samples were 348 nurses from four selected referral hospitals, affiliated with TUMS. We collected data through a questionnaire covering demographic details, managerial intelligence, quality of work life, and job performance and used SPSS 24 software to conduct descriptive and inferential data analysis.
Results
The average managerial intelligence and quality of work life scores were both 2.42 out of 5 (average), while job performance scored 3.90 (good). There was a significant positive correlation between managerial intelligence and job performance (r = 0.435, p = 0.000). Age and work experience were significantly correlated with managerial intelligence, while job category, income, and hospital were linked to quality of work life. Job performance was related to age, job category, and work experience (p < 0.05).
Conclusions
Enhancing managerial intelligence may directly improve nurses' job performance and indirectly influence their performance through better quality of work life. We propose capacity-building courses and continuous education to improve the nurses’ managerial intelligence and job performance.
Hair Cortisol Concentration and Mental Health During Childhood and Adolescence: evidence of higher cortisol concentration in ADHD symptoms in a large Brazilian population-based birth cohort
Authors: Tovo-Rodrigues Luciana , Bierhals Isabel Oliveira , Goularte Laura Moreira , Santos Iná S , Rohde Luis Augusto , Oliveira Isabel Oliveira , Gonzalez Andrea , Matijasevich Alicia , Murray Joseph 
Published: November 2024

Abstract

Background: Childhood and adolescence are pivotal for mental health. The hypothalamic-pituitary-adrenal axis is the primary stress system, with chronic activation measurable via hair cortisol concentration (HCC), indicating long-term stress exposure. While elevated HCC is linked to adult mental health, its role in youth remains unclear. This study aims to assess the association between mental health symptoms in childhood and adolescence and HCC levels at age 15 in a Brazilian population-based cohort.
Methods: We analyzed data from the 2004 Pelotas Birth Cohort, which includes 4,231 children followed from birth. At ages 6, 11 and 15 years, mental health symptoms were assessed using the Strengths and Difficulties Questionnaire (SDQ). At age 15, HCC was measured from 3 cm hair samples, and analyzed as ln (pg/mg). Linear regression models examined associations between HCC and SDQ scores, adjusting for perinatal variables, demographic factors, family income, maternal characteristics, maternal depression, harsh parenting exposure, hair traits, and corticosteroid use. The regression coefficient was exponentiated to improve interpretability.
Results: SDQ total difficulties and conduct problems at age 6 were associated with HCC at age 15 in adjusted models (p<0.05). Hyperactivity/inattention symptoms at ages 6 (β=1.009 [1.001;1.018]) and 11 (β=1.013 [1.004;1.022]) were associated with HCC in the adjusted models. At age 15, the association between hyperactivity/inattention and HCC was associated with HCC in the partially adjusted model. (β=1.009 [1.000;1.017]).
Conclusions: These associations emphasize the links between mental health and chronic stress over time, mainly an association between Attention-Deficit/Hyperactivity Disorder symptoms and higher concentration of HCC.
Larvicidal and Cytotoxic Activities of Exopolysaccharides Produced by Thermophilic Bacteria
Authors: AYTAR Mehmet , Bingül Demet Yalçın , Touray Mustafa , Uygun Deniz Aktaş , BAŞBÜLBÜL GAMZE 
Published: November 2024

Abstract

EPSs synthesized by thermophilic bacteria are natural biopolymers that have recently garnered attention due to their potential applications in areas such as pharmaceuticals and biomedicine. In this study, EPSs produced by five distinct thermophilic bacterial isolates from hot springs in Turkey were purified using ion exchange and gel chromatography, and the larvicidal and cytotoxic effects of these EPSs were examined. While Geobacillus thermodenitrificans HBB111 produces the highest quantity (650,9 µg/mL) of EPS, the protein content of crude EPS samples ranges from 0.3–1.5%. EPS111 and EPS261 showed the most effective larvicidal action, eliminating 72% and 62.7% of Ae. albopictus larvae after 48 hours, respectively. Among the purified samples, EPS111 exhibited the most significant effect on the proliferation of PC3 cells, resulting in a 68% inhibition (IC50 of 0,23 mg/mL) followed by EPS106 in a 55% (IC50 of 0,45 mg/mL). According to the results of our study, thermophilic EPSs demonstrate potential due to their insecticidal and anticancer properties.
The present situation of family rearing cost of infants aged 0-3 Years in Jiaxing and its Influence on fertility willingness: a cross-sectional study
Authors: Sun Xiaoyan , Xu Yan , Gu Shuiqin , Xu Jianping 
Published: November 2024

Abstract

Background
The government of China announced the three-child policy on May 31st, 2021, allowing all couples to have up to three children. At present, there is a lack of multi-dimensional investigation on the cost of parenting and fertility willingness of women and men under the three-child policy in China. The purpose of this study is to explore the present situation of parenting cost of 0-3-year-old infant families in Jiaxing city and its influence on fertility willingness.
Methods
The questionnaire survey was conducted by using the unified questionnaire of the whole province, namely, the questionnaire on the cost of raising infants under 3 years old in Zhejiang Province. In the form of sampling survey, the subjects were families with infants born after February 1, 2018 in Jiaxing, with a total of 21,104 households participating in the survey. Conduct a one-month online survey through the platform of Questionnaires.
Results
Households' daily expenses include housing loans, children's education, recreation and medicine, while the expenses for supporting parents are relatively small. In terms of family care expenditure, food and household facilities for infants and young children are the main expenses. The survey also found that the main problem faced by parents in the process of raising infants is the cultivation of sleep habits. As far as the willingness to give birth to the next child is concerned, the number of children in the family, the age of parents and other factors have an impact on it, but there is no significant correlation between the gender of children and the educational level of parents. The main reason for not wanting to give birth again is the economic pressure, especially the high cost of buying a house and education. The survey data showed that the differences of family annual income, father's age, mother's age and the number of children had statistical significance (P < 0.05). The data showed that the number of families with two children was the highest among the reasons for not wanting to have children again, with statistical significance (P < 0.01). The survey found that economic reasons were the primary reasons for not wanting to have children in families with one child, two children, three children and above (P < 0.05).
Conclusion
This study provides data support for formulating relevant policies. It can be seen that seeking targeted policy support, building a sound social parenting system, alleviating the economic cost of parenting, improving the environment for raising infants and promoting rational fertility decision-making will become a crucial fertility promotion strategy in the future.
Experimental study on instability and failure mechanism of sandstone under freeze-thaw and load
Authors: Lv Wenyu , You Ru , Wang Chuangye , Wang Zhihe , Wu Yongping , Xie Panshi , Lyu Chao , Luo Sheng , Yichen Li 
Published: November 2024

Abstract

In order to study the influence of loading rate and freeze-thaw cycles on the mechanical properties of sandstones, uniaxial compression tests were conducted on sandstone samples subjected to various freeze-thaw cycles and loading rates. Both internal and external damages were monitored throughout the tests using an acoustic emission (AE) detection system and a high-speed camera system. The effects of loading rate and freeze-thaw cycle on the typical mechanical properties, failure modes, and AE characteristics of sandstone were analyzed. In addition, attenuation models were established for the strength indices of freeze-thaw affected sandstone under different loading rates. Based on the results of the analyses, the following main conclusions are drawn: With the increase in freeze-thaw cycles and the decrease in loading rate, the uniaxial compressive strength(UCS) and elastic modulus(E) of sandstone decrease and the ductility increases, whereas the attenuation constant λ decreases as the loading rate increases. Upon complete failure, the number of tensile cracks in the sandstone exceeds that of shear cracks. As the number of freeze-thaw cycles increases and the loading rate decreases, the proportion of shear cracks gradually increases. With the increase in the loading rate, sandstone damage is primarily due to tension, and with more freeze-thaw cycles, damage is mainly due to both tension and shear. When the internal cracks in sandstone start to extend, the AE events rate and b-value signals become active. The absence of low AE events rate and a sharp decline in AE b-value can serve as precursors for predicting instability and failure of sandstones subjected to varying loading rates and freeze-thaw cycles.