bluuebunny/crossref_metadata_2025 huggingface dataset:
Standardized Ultrasound Protocol for Peripherally Inserted Central Catheters in Neonates: A Retrospective, X-ray Controlled Observational Study
Authors: Firszt Oliver , Maślanka Magdalena , Grabowska Agata , Kluczewska Ewa
Published: September 2024

Objectives: Ultrasound (US) has been reported to be a reliable imaging modality for locating the tip of peripherally inserted central venous catheters (PICC) in neonates. However, its use requires a certain level of expertise, which may limit its application. Standardization of US examinations using designed protocols may improve their efficiency and ease of use. The objective of our study is to evaluate the effectiveness of introducing a standardized US protocol for PICC guidance. Methods: An expert panel was formed in order to develop a standardized US protocol for PICC assessment. Institutional review board agreement was obtained. This protocol was then used by participating clinicians to assess PICC position. Every assessment was followed by a radiographic control. The study group consisted of 262 US examinations of PICC lines in a level III neonatal intensive care unit (NICU) performed according to the designed protocol. Subsequent statistical analysis was made with the RStudio software, R version 4.3.1 (2023-06-16 ucrt). Results: Compared to the X-ray control, standardized US examinations showed 100% sensitivity, 81% specificity, an accuracy of 98% and a 98% precision for assessing catheter placement. The Cohen’s Kappa value for the comparison of X-ray and US studies was 0.88, indicating good agreement between the two methods. Conclusions: Standardized US examinations have shown similar potential for evaluating the location of PICC lines when compared with radiographic studies. Implementing a standardized protocol in the NICU may facilitate the ultrasound assessment of PICC lines and reduce exposure to ionizing radiation.
The Unconsidered Pathway: Suggestions for Physical Therapists to Facilitate Student Reintegration to Physical Education after a Concussion
Authors: Tucker Pamela Maree , Strizak Jennifer , Rieger Brian , Lounsbury Steven , Leddy John
Published: September 2024

Background/Objectives: “Return-to-play” and “return-to-learn” after a concussion are familiar concepts due to guidelines proposed by the Concussion in Sport Group and Heads-Up Initiative. The purpose of this commentary is to expand upon the current consensus guidelines for treatment of concussed children and adolescents, as well as provide guidelines for returning to physical education (RT-PE) classes. Proposal: The authors propose one general and four subtype-specific guidelines post-concussion injury. This framework highlights the role of physical therapists in the management of children with prolonged recovery. The final RT-PE determination should occur with documented medical clearance from a licensed healthcare provider trained in the evaluation and management of a concussion. Conclusions: Despite significant gains regarding the management of concussed children and adolescents, confusion remains regarding RT-PE post-concussion. To eliminate ambiguity and promote adherence to a gradual return to activity protocols, the authors developed guidelines based on current evidence and recommendations.
Pilot Clinical Safety and Efficacy Evaluation of a Topical 3% Tranexamic Acid Cream and Serum Protocol for Managing Facial Hyperpigmentation in Caucasian Patients
Authors: Hsin Sarah , Lourenço Kelly , Porcello Alexandre , Marques Cíntia , Rodriguez Clara , Raffoul Wassim , Scaletta Corinne , Abdel-Sayed Philippe , Hadjab Basste , Applegate Lee Ann , Laurent Alexis
Published: September 2024

Facial hyperpigmentation is a highly prevalent dermatological condition, characterized by dark spots on the skin resulting from excess melanin production. Hyperpigmentation significantly impacts patients’ quality of life and self-esteem. Current treatments often present disadvantages linked to poor product tolerability. A topical cosmetic approach combining three lightening active ingredients (tranexamic acid, niacinamide, vitamin C) offers a new option for treating dark spots on the skin. The present in-use test under dermatological control evaluated the clinical safety and efficacy of a cream and serum containing these three ingredients, formulated with hyaluronic acid for enhanced delivery, stability, and efficacy. A total of 22 Caucasian patients with facial hyperpigmentation, both male and female, aged between 45 and 67 years, applied the cream and serum for 8 weeks. Clinical assessments, colorimetric evaluations, standardized photography, and self-assessment questionnaires were used to measure outcomes. No serious adverse effects were recorded, and the incidence of local adverse effects was low, highlighting good tolerability of the investigated test items. In most participants, significant improvements in hyperpigmented areas were recorded. Clinical scoring by the dermatologist investigator indicated a statistically significant 13% reduction in color intensity and a 6% reduction in the size of dark spots after 8 weeks of treatment. Colorimetric evaluation showed a statistically significant 1% increase in luminosity (L* parameter) and an 8% improvement in the Individual Typological Angle (ITA°) in endpoint, indicating lighter skin spots. Subjective assessments reflected high user satisfaction, with 95% of participants noting improvements in skin hydration and luminosity, and 77% reporting a reduced appearance of dark spots. Overall, the present work supports the use of tranexamic acid, niacinamide, and vitamin C as an effective and well-tolerated combined topical management option for hyperpigmentation. This combination offers a viable alternative to classical whiteners for individuals seeking to reduce facial skin coloration imbalance and improve skin tone.
Artificial Intelligence Modeling of Materials’ Bulk Chemical and Physical Properties
Authors: Darsey Jerry A.
Published: September 2024

Energies of the atomic and molecular orbitals belonging to one and two atom systems from the fourth and fifth periods of the periodic table have been calculated using ab initio quantum mechanical calculations. The energies of selected occupied and unoccupied orbitals surrounding the highest occupied and lowest unoccupied orbitals (HOMOs and LUMOs) of each system were selected and used as input for our artificial intelligence (AI) software. Using the AI software, correlations between orbital parameters and selected chemical and physical properties of bulk materials composed of these elements were established. Using these correlations, the materials’ bulk properties were predicted. The Q2 correlation for the single-atom predictions of first ionization potential, melting point, and boiling point were 0.3589, 0.4599, and 0.1798 respectively. The corresponding Q2 correlations using orbital parameters describing two-atom systems increased the capability to predict the experimental properties to the respective values of 0.8551, 0.8207, and 0.7877. The accuracy in predicting materials’ bulk properties was increased up to four-fold by using two atoms instead of one. We also present results of the prediction of molecules for materials relevant to energy systems.
The Effects of Smoking on Dental Implant Failure: A Current Literature Update
Authors: Stiller Hanna L. , Ionfrida Josephine , Kämmerer Peer W. , Walter Christian
Published: September 2024

Background: This systematic review assesses the current literature (2020–2024) evaluating the impact of smoking on dental implant failure rates. Methods: A non-funded Pubmed database review was conducted according to PRISMA guidelines, and the results were tabulated to extract the study design, patient characteristics, follow-up time, comparison, outcome, and strengths and weaknesses, including risk of bias. This review included 33 studies with 29,519 implants placed in over 18,301 patients. We included prospective and retrospective clinical studies, randomized and non-randomized controlled trials, cohort studies, and observational studies that examined smoking’s effects on implant failure rates. Studies had to classify individuals into two groups, smokers and non-smokers, with at least ten implants. Exclusions included reviews, case reports, experimental studies, guidelines, non-English publications, studies lacking comparative data on failure rates, those excluding smokers, and studies focusing on head and neck cancer patients or specialized implants. Results: Our findings indicate a significant correlation in 25 out of 33 studies between smoking and increased implant failure rates, affecting both early and late stages of implant integration and survival as well as revealing a dose–response relationship, with higher daily cigarette consumption significantly increasing the risk of implant failure. Conclusions: This review highlights the importance of smoking cessation efforts, patient education, and tailored patient care in dental implantology. Future research should explore the effects of smoking frequency and alternative tobacco products, such as e-cigarettes, aiming to improve success rates among smokers.
A Systematic Review of Stem Cell Applications in Maxillofacial Regeneration
Authors: Hung Man , Sadri Mahsa , Katz Melanie , Schwartz Connor , Mohajeri Amir
Published: September 2024

Introduction: Regenerative medicine is revolutionizing oral and maxillofacial surgeries with stem cells, particularly mesenchymal stem cells, for tissue and bone regeneration. Despite promising in-vitro results, human trials are limited. A systematic review is needed to evaluate stem cell efficacy in maxillofacial issues, aiming to improve surgical outcomes and patient satisfaction. Methods: Following Preferred Reporting Items for Systematic Reviews and Meta-Analyses Guidelines, this review included peer-reviewed articles (2013–2023) on stem cells in oral surgery, excluding non-English publications, abstracts, reviews, and opinion pieces. Searches were conducted in PubMed, Web of Science, OVID, Cochrane, Dentistry & Oral Sciences Source—Ebscohost, and Scopus. Two authors independently screened titles and abstracts, resolving disagreements by consensus. Full-text analysis involved extracting key data, verified by a secondary reviewer and additional quality checks. Results: From 3540 initial articles, 2528 were screened after removing duplicates, and 7 met the inclusion criteria after excluding irrelevant studies. Key themes included the safety and efficacy of stem cell therapy, and bone regeneration and quality. Studies predominantly used mesenchymal stem cells. Findings showed positive outcomes in clinical safety and effectiveness and significant potential for bone regeneration. Conclusions: This systematic review highlights the potential of stem cell therapies in maxillofacial applications, supporting their safety, efficacy, and bone regeneration capabilities. Further research is needed to standardize protocols and confirm long-term benefits.
Overview of Ethiopian Public Higher Education: Trends, System, Challenges, and Quality Issues
Authors: Tareke Tsehaynew Getaneh , Woreta Getachew Tassew , Zewude Girum Tareke , Amukune Stephen , Oo Tun Zaw , Józsa Krisztián
Published: September 2024

Education is a pillar of the socio-economic development of a nation. Higher education (HE) is an engine for national development through producing the required skilled manpower, technology, innovations, research, and training services. The purpose of this study is to highlight the functioning, challenges, and emerging initiatives in public universities in Ethiopia. It employs a narrative review method for the synthesis of the findings. A total of 2004 published articles were searched using Boolean syntax from Scopus, ProQuest, ScienceDirect, and Web of Sciences databases, and 40 articles were maintained for analysis. Thus, the Ministry of Education (MoE) oversees the overall system of higher education. Public universities have shown relatively rapid expansion in the last three decades compared to the 1950s, followed by an increase in gross enrollment rate (GER). However, concerns were raised about the sustainability of these changes due to low investment in the educational sector. Various reforms have been introduced into the higher education system like differentiation, curriculum changes, national comprehensive exit exams for undergraduates, and admission tests for postgraduate programs. The higher education system is struggling with persistent challenges such as quality concerns, inadequate educational inputs, rigid structure, poor working environments, unemployment, and professional skill gaps. Due emphasis should be given to strengthening leadership, supplying adequate educational resources, sustainable financing, staff development, improving service delivery, and quality education.
Decolonising Educational Technology
Authors: Koole Marguerite , Smith Matt , Traxler John , Adam Taskeen , Footring Shri
Published: September 2024

Educational technology (EdTech) has become commonplace in modern educational practice [...]
Evaluating the Harmonic Effects on the Thermal Performance of a Power Transformer
Authors: Seddik Mohamed S. , Eteiba Magdy B. , Shazly Jehan
Published: September 2024

Harmonics in the power grid contribute to increased power losses in both the core and windings of power transformers. These losses lead to abnormal rises in temperature causing overheating and reduce the efficiency of the transformer. If the losses and temperature exceed the values set during the design stage for linear load conditions, it can damage the transformer’s insulating materials and shorten its lifespan. To assess the thermal impact of power system harmonics on transformers under steady-state and transient conditions, the rated losses and harmonic losses of the transformer are calculated. These losses are then inputted into a developed thermal 3D finite element method (FEM) performance model to determine the temperature distribution of transformer components. The numerical results from the thermal model will be compared with data from a Hyundai test report and real measurements from Egypt’s Kureimat power plant, specifically a 750 MW combined cycle power plant. The thermal modeling is focused on a step-up (16.5/240 kV), 240 ± 4 × 2.5%, 180/240/300 MVA power transformer operating in ONAN, ONAF1, and ONAF2 modes. This paper shows that the developed model aligns closely with actual measurements and the HYUNDAI test report. The loss calculations reveal that the discrepancy in total losses, with and without accounting for harmonics, becomes more pronounced as the load increases. Using this model, the presence of grid harmonics results in a higher temperature distribution across transformer components, leading to an increase in the hot spot temperature.
The Influence of Tourist–Environment Fit on Environmental Responsibility Behavior: A Moderated Mediation Model
Authors: Li Yifei , Song Min
Published: September 2024

Urban forest parks have emerged as significant tourist destinations thanks to economic expansion and the rise in free time. These parks offer tourists the opportunity to connect with nature. Existing studies have examined the value and importance of urban forest parks for tourists. However, there is a lack of research on the interaction between tourists and the natural environment and its influence on environmental responsibility. This study used structural equation modeling to explore the impact of tourist–environment fit on environmentally responsible behavior and the mediating role of natural empathy and awe in the impact of the above-mentioned relationship. In addition, the moderating role of tourists’ different cultural backgrounds (nationalities) was also analyzed. In this study, 509 valid questionnaires were collected from field surveys in April and May 2024 at the forest park of Lim City, Seoul, Republic of Korea. The data analysis indicates a notable and favorable impact of tourist–environment fit on visitors’ natural empathy, awe, and environmentally responsible behavior. Natural empathy and awe play a mediating role in the influence of tourist–environment fit on environmentally responsible behavior. It suggests that the fit between tourists and the recreational environment of urban forest parks promotes the emergence of empathy and awe and, thus, stimulates tourists’ environmentally responsible behavior. In addition, tourists’ cultural backgrounds play a moderating role in the influence of natural empathy and awe on environmentally responsible behavior. Compared to Korean tourists, Chinese tourists’ natural empathy and awe strongly influence environmentally responsible behavior compared to Korean tourists. This paper also explores the theoretical progress and practical observations that provide guidance and serve as references for the management and sustainable development of urban forest parks.
Enhancement of Succinic Acid Production by Actinobacillus succinogenes in an Electro-Bioreactor
Authors: Tix Julian , Gotthardt Leon , Bode Joshua , Karabacak Burak , Nordmann Janne , Hengsbach Jan-Niklas , Ulber Roland , Tippkötter Nils
Published: September 2024

This work examines the electrochemically enhanced production of succinic acid using the bacterium Actinobacillus succinogenes. The principal objective is to enhance the metabolic potential of glucose and CO2 utilization via the C4 pathway in order to synthesize succinic acid. We report on the development of an electro-bioreactor system to increase succinic acid production in a power-2-X approach. The use of activated carbon fibers as electrode surfaces and contact areas allows A. succinogenes to self-initiate biofilm formation. The integration of an electrical potential into the system shifts the redox balance from NAD+ to NADH, increasing the efficiency of metabolic processes. Mediators such as neutral red facilitate electron transfer within the system and optimize the redox reactions that are crucial for increased succinic acid production. Furthermore, the role of carbon nanotubes (CNTs) in electron transfer was investigated. The electro-bioreactor system developed here was operated in batch mode for 48 h and showed improvements in succinic acid yield and concentration. In particular, a run with 100 µM neutral red and a voltage of −600 mV achieved a yield of 0.7 gsuccinate·gglucose−1. In the absence of neutral red, a higher yield of 0.72 gsuccinate·gglucose−1 was achieved, which represents an increase of 14% compared to the control. When a potential of −600 mV was used in conjunction with 500 µg∙L−1 CNTs, a 21% increase in succinate concentration was observed after 48 h. An increase of 33% was achieved in the same batch by increasing the stirring speed. These results underscore the potential of the electro-bioreactor system to markedly enhance succinic acid production.
Preparation and Characterization Study of Zein–Sodium Caseinate Nanoparticle Delivery Systems Loaded with Allicin
Authors: Hu Ling , Zhao Pengcheng , Wei Yabo , Lei Yongdong , Guo Xin , Deng Xiaorong , Zhang Jian
Published: September 2024

Allicin, as a natural antibacterial active substance from plants, has great medical and health care value. However, due to its poor stability, its application in the field of food and medicine is limited. So, in this paper, allicin–zein–sodium caseinate composite nanoparticles (zein–Ali–SC) were prepared by antisolvent precipitation and electrostatic deposition. Through the analysis of the particle size, ζ-potential, encapsulation efficiency (EE), loading rate (LC) and microstructure, the optimum preparation conditions for composite nanoparticles were obtained. The mechanism of its formation was studied by fluorescence spectrum, Fourier infrared spectrum (FTIR), X-ray diffraction (XRD) and thermogravimetric analysis (TGA). The stability study results showed that the particle size of composite nanoparticles was less than 200 nm and its PDI was less than 0.3 under different NaCl concentrations and heating conditions, showing good stability. When stored at 4 °C for 21 days, the retention rate of allicin reached 61.67%, which was 52.9% higher than that of free allicin. After freeze-drying and reheating, the nanoparticles showed good redispersibility; meanwhile, antioxidant experiments showed that, compared with free allicin, the nanoparticles had stronger scavenging ability of free radicals, which provided a new idea for improving the stability technology and bioavailability of bioactive compounds.
Evaluation of Functional Components of Lactobacillus plantarum AR495 on Ovariectomy-Induced Osteoporosis in Mice And RAW264.7 Cells
Authors: Chen Zheng , Shao Junlin , Yang Yijin , Wang Guangqiang , Xiong Zhiqiang , Song Xin , Ai Lianzhong , Xia Yongjun , Zhu Beiwei
Published: September 2024

Osteoporosis is a disease characterized by abnormal bone metabolism, where bone resorption outpaces bone formation. In this study, we investigated the key functional components of Lactobacillus plantarum AR495 in mitigating ovariectomy (OVX)-induced osteoporosis in mice. The results indicated that both Lactobacillus plantarum AR495 and its fermentation broth significantly reduced urinary calcium and deoxypyridinoline (DPD) levels in the mice. These interventions inhibited bone resorption and improved trabecular bone architecture by modulating the nuclear factor κB (RANK)/RANK ligand (RANKL)/osteoprotegerin (OPG) signaling pathway. Additionally, the L. plantarum AR495 and fermentation broth groups inhibited the RANKL/TRAF-6 and TLR4/MYD88 pathways, leading to enhanced bone metabolism, improved intestinal barrier function, and reduced intestinal inflammation. In vitro experiments revealed that AR495 fermentation supernatant fractions larger than 100 kDa and those between 50–100 kDa significantly decreased the activity of the osteoclast marker TRAP, regulated the expression of the TLR4/MYD88 pathway, and inhibited osteoclast formation, thereby alleviating the OVX-induced osteoporosis phenotype. These findings suggest that these components may be primary functional elements of L. plantarum AR495 in the treatment of osteoporosis.
Microbial Growth Inhibition Effect, Polyphenolic Profile, and Antioxidative Capacity of Plant Powders in Minced Pork and Beef
Authors: Meremäe Kadrin , Rusalepp Linda , Sünter Alar , Raudsepp Piret , Anton Dea , Mäesaar Mihkel , Elias Terje , Püssa Tõnu , Roasto Mati
Published: September 2024

Consumer interest in healthier meat products has grown in recent years. Therefore, the use of plant powders as natural preservatives in the composition of pork and beef products could be an alternative to traditional meat products. This study aimed to assess the effect of different powders, such as blackcurrant, chokeberry, rowan berries, apple, tomato, garlic, and rhubarb, on the microbial growth dynamics in minced pork and beef during refrigerated storage. The total counts of aerobic microorganisms, Pseudomonas spp., yeasts, and molds were examined according to ISO methods. The polyphenolic profiles of plant powders and supplemented minced pork and beef samples were determined by HPLC-MS. The antioxidative capacity of the plant powders was analyzed using a spectrophotometric method. The findings of the study revealed that supplemented minced pork and beef samples had similar polyphenolic profiles and microbial growth dynamics. The highest antioxidative capacity was observed for anthocyanin-rich berry powders. In both minced pork and beef, rhubarb powder was the most effective plant material for inhibiting microbial growth, followed by blackcurrant pomace powder. In conclusion, all of the plant powders used in the present study can be used for the valorization of minced meat products, providing both antimicrobial and antioxidant effects.
Orbital Precession in Janis–Newman–Winicour Spacetime
Authors: Turimov Bobur , Karshiboev Khurshid , Abdujabbarov Ahmadjon , Mitra Samik , Karshiboev Shavkat
Published: September 2024

We have investigated the Janis–Newman–Winicour spacetime through three fundamental tests of theories of gravity, namely, gravitational lensing, perihelion shift, and redshift due to gravitational force. Focusing initially on the circular motion of a massive particle within the equatorial plane, the analysis disregards external scalar field interactions. The Janis–Newman–Winicour (JNW) spacetime’s unique parameters, mass (M) and the scalar parameter (n), are examined, revealing an intriguing relationship between the innermost stable circular orbit position of the test particle and the scalar field parameter. The study also explores photon motion around a gravitational object in JNW spacetime, revealing the expansion of the photon sphere alongside a diminishing shadow, influenced by the external scalar field. Despite these complexities, gravitational bending of light remains consistent with general relativity predictions. The investigation extends to perihelion precession, where the trajectory of a massive particle in JNW spacetime exhibits eccentricity-dependent shifts, distinguishing it from Schwarzschild spacetime. Finally, oscillatory motion of massive particles in JNW spacetime is explored, providing analytical expressions for epicyclic frequencies using perturbation methods. The study concludes with the application of MCMC analyses to constrain the JNW spacetime parameters based on observational data.
Use of Chitosan–Iron Oxide Gels for the Removal of Cd2+ Ions from Aqueous Solutions
Authors: Mendizábal Eduardo , Ríos-Donato Nely , Ventura-Muñoz Minerva Guadalupe , Hernández-Montelongo Rosaura , Verduzco-Navarro Ilse Paulina
Published: September 2024

High-quality water availability is substantial for sustaining life, so its contamination presents a serious problem that has been the focus of several studies. The presence of heavy metals, such as cadmium, is frequently studied due to the increase in the contamination levels caused by fast industrial expansion. Cadmium ions were removed from aqueous solutions at pH 7.0 by chitosan–magnetite (ChM) xerogel beads and chitosan–FeO (ChF) xerogel beads in batch systems. Kinetic studies were best modeled by the Elovich model. The adsorption isotherms obtained showed an inflection point suggesting the formation of a second layer, and the BET model adjusted to liquid–solid systems was adequate for the description of the experimental data. Maximum uptake capacities of 36.97 ± 0.77 and 28.60 ± 2.09 mg Cd/g xerogel were obtained for ChM and ChF, respectively. The studied composites are considered promising adsorbent materials for removing cadmium ions from aqueous systems.
The Associations between Depression and Sugar Consumption Are Mediated by Emotional Eating and Craving Control in Multi-Ethnic Young Adults
Authors: Graybeal Austin J. , Stavres Jon , Swafford Sydney H. , Compton Abby T. , McCoy Stephanie , Huye Holly , Thorsen Tanner , Renna Megan E.
Published: September 2024

Background/Objectives: Individuals with mental health conditions such as depression are vulnerable to poor dietary habits, potentially due to the maladaptive eating behaviors often used to regulate negative emotion. However, the specific dietary components most associated with depression, as well as the mediating roles of emotion regulation and other eating behaviors, remains ambiguous in young adults. Methods: For this cross-sectional evaluation, a total of 151 (86 F, 65 M; BMI: 22.0 ± 5.1 kg/m2; age: 21.4 ± 2.5 y) multi-ethnic participants (50 White, 36 Black, 60 Asian, and 5 White Hispanic) completed a digital 24-h dietary recall and self-reported measures of depressive symptoms, emotional regulation, and eating behaviors. LASSO regression was used to identify the dietary variables most associated with each subscale and to remove extraneous dietary variables, and multiple regression and mediation analyses were conducted for the remaining variables. Results: Out of >100 dietary factors included, only added sugar in the combined sample (p = 0.043), and relative sugar in females (p = 0.045), were retained and positively associated with depressive symptoms. However, the relationships between depression and added and relative sugar intake were mediated by craving control and emotional eating, respectively. Individuals with higher added sugar intake (p = 0.012–0.037), and females with higher relative sugar intake (p = 0.029–0.033), had significantly higher odds of risk for major depression disorder and the use of mental health medications. Conclusions: Added and relative sugar intake are significantly associated with depressive symptoms in young adults, but these relationships may be mediated by facets of emotional dysregulation, such as emotional eating and craving control.
Depression, Anxiety, and Psychological Resilience in Healthcare Workers during the Pandemic (COVID-19)
Authors: Yöyen Elif , Barış Tülay Güneri , Bal Fatih
Published: September 2024

Background/Objectives: The aim of this study is to examine the relationship between depression, anxiety, and psychological resilience variables with working conditions and various demographic variables in healthcare professionals who are actively involved in the pandemic process. Methods: This study included 1440 healthcare workers in different professions in two state hospitals accepted as pandemic hospitals. The research data were collected with the Sociodemographic Data Form, Hospital Anxiety and Depression Scale (HAD), and Psychological Resilience Scale (PRS). Independent samples t-test, one-way analysis of variance (ANOVA), and descriptive analyses were used to analyze the data. Results: As a result of the analyses, female participants had higher anxiety scores than male participants; healthcare professionals working as nurses, midwives, and health officers had higher anxiety scores than other healthcare professionals; those with less professional experience had higher anxiety scores than those with more professional experience; and those who had long hours of contact with COVID-19-positive patients (8 h or more per day) had higher anxiety scores than those with less contact. Single female healthcare workers reported higher depression symptoms than married female healthcare workers, those with children reported higher depression symptoms than those without children, and those with average professional experience (6–10 years) reported higher depression symptoms than those with more experience. Being single, having children, and having an average number of shifts (working at night) caused an increase in psychological resilience. Conclusions: The results of the study may contribute to the structuring of health policies to protect and support the mental health of healthcare workers in ongoing and future pandemic processes.
Oral Health Behaviour, Care Utilisation, and Barriers among Students with Disabilities: A Parental Perspective
Authors: Asiri Faris Yahya I. , Tennant Marc , Kruger Estie
Published: September 2024

Background: Oral health is a critical component of overall well-being. However, students with disabilities (SWDs) face unique challenges in maintaining oral hygiene and accessing dental care. This study aims to explore oral health behaviours, dental care utilisation, and barriers to accessing dental care among SWDs in Al-Ahsa, Saudi Arabia, from the perspectives of their parents. Methods: A descriptive cross-sectional study was conducted among parents of SWDs in Al-Ahsa, Saudi Arabia. Data were collected using a validated questionnaire covering oral health behaviours, dental care utilisation, and barriers to care. The sample size was determined based on the SWDs population in the region. Data were analysed using descriptive and analytical statistics, with significant associations identified at p < 0.05. Results: Findings revealed that 45.7% of SWDs brushed irregularly, with only 16.8% brushing twice a day or more. Dental flossing was reported by just 4.3% of SWDs. Emergency-based dental visits were common (51.9%), and 29.5% of SWDs had never visited a dentist. Significant associations were found between maternal education and tooth brushing frequency (p = 0.004) and between parental education and the frequency of dental visits (p = 0.035). The most reported barriers included fear of treatment (47.1%), difficulty finding willing dentists (45.5%), and long wait times for appointments (44.7%). Conclusions: The study emphasises the pressing need for targeted interventions to improve oral hygiene practices and enhance accessibility to dental services for SWDs.
Inheritance of the Flesh Color and Shape of the Tuberous Root of Sweet Potato (Ipomoea batatas [L.] Lam.)
Authors: Morales Alfredo , Vargas Iván Javier Pastrana , del-Sol Dania Rodríguez , Portal Orelvis , García Yoel Beovides , García Yuniel Rodríguez , Medina Alay Jiménez , Valdivies Yusbiel León , Chávez Vaniert Ventura
Published: September 2024

The continued success of any conventional sweet potato breeding program is limited by knowledge of the inheritance of the traits under study, such as flesh color and tuberous root shape, because of the difficulty of segregating color frequencies by visual separation. The objective of this study was to understand the mode of inheritance of these genetic traits. The cross blocks were established at the Research Institute of Tropical Roots and Tuber Crops (INIVIT-Cuba). Eight parental genotypes of known compatibility were selected, with contrasting phenotypic characteristics to develop segregating populations. To express color objectively, the CIE L*a*b* color space was used (L*: lightness; a* and b*: chromatic coordinates), and four morphometric variables related to the shape and dimensions of the tuberous root were evaluated. From 2419 reciprocal crosses, 2045 botanical seeds and 1764 seedlings were obtained. Incomplete dominance of the white and purple flesh colors over the orange color was observed, as well as transgressive segregation for purple, orange, and white flesh colors and for the shape of the tuberous root. The results allowed us to propose a genetic model of biparental crosses for the improvement of the flesh color of sweet potato (Ipomoea batatas [L.] Lam.), as well as a predictive formula of the progeny to be selected.
Special Issue: ‘Advanced Studies in Maintaining Post-Harvest Quality of Fruits and Vegetables’
Authors: Hu Wenzhong
Published: September 2024

The characteristics of taste, flavor, nutrition, and safety in fruits and vegetables during post-harvest, minimal processing, fresh-cutting, fermenting, and processing are critical elements in the storage and sale of products [...]
Protein Hydrolysates—Production, Effects on Plant Metabolism, and Use in Agriculture
Authors: Pasković Igor , Popović Ljiljana , Pongrac Paula , Polić Pasković Marija , Kos Tomislav , Jovanov Pavle , Franić Mario
Published: September 2024

Agriculture is facing challenges to produce more food in a climate scenario that works in the opposite direction. To amend this, agriculture has to invent new ways of making more with less. Interest in using by-products and finding new ways to utilize them has been increasing in recent years. The use of protein-rich sources for protein hydrolyzation and the use of these protein hydrolysates as biostimulants in plant production have been increasing. These mixtures are mainly produced by chemical and enzymatic hydrolysis from agro-industrial protein-rich by-products of animal, plant, and algal origins. The application of PHs has the potential to alleviate environmental stress; improve plant growth; and increase productivity, fruit yield, and abiotic-stress tolerance in agricultural crops. The use of these biostimulants offers a way to reduce the use of agrochemicals and agrees with the “do more with less” task in the future of agricultural production. This review gives an insight into the production of PHs, referring to sources of raw materials and methods of hydrolysis, the uptake and translocation of PHs, their effect on plant growth, the development and physiology, their role in alleviating stressful conditions, and their use in agriculture. The beneficial effects of PHs on different aspects of plant physiology, metabolism, and plant functioning under stressful conditions are evident. Inconveniently, crops, and sometimes even cultivars, are affected differently based on the way that PH is applied, the timing, and the concentration applied. Further research is needed to elucidate the mechanisms by which the components of PHs modify plant physiology and metabolism.
Hydro-Geochemistry and Water Quality Index Assessment in the Dakhla Oasis, Egypt
Authors: Darwish Mahmoud H. , Megahed Hanaa A. , Sayed Asmaa G. , Abdalla Osman , Scopa Antonio , Hassan Sedky H. A.
Published: September 2024

Water quality is crucial to the environmental system and thus its chemistry is important, and can be directly related to the water’s source, the climate, and the geology of the region. This study focuses on analyzing the hydrochemistry of specific locations within the Dakhla Oasis in Egypt. A total of thirty-nine groundwater samples representing the Nubian Sandstone Aquifer (NSSA) and seven surface water samples from wastewater lakes and canals were collected for analysis. Key parameters such as pH, electrical conductivity (EC), and total dissolved solids (TDS) were measured on-site, while major ions and trace elements (Fe+2 and Mn+2) were analyzed in the laboratory. The water quality index (WQI) method was employed to assess the overall water quality. Hydro-chemical facies were investigated using Piper’s, Scholler’s, and Stiff diagrams, revealing sodium as the dominant cation and chloride, followed by bicarbonate as the dominant anion. The hydro-chemical composition indicates that Na–Cl constitutes the primary water type in this study. This points to the dissolution of evaporates and salt enrichment due to intense evaporation resulting from the region’s hyper-aridity. In groundwater samples, the order of hydro-chemical facies is HCO3− > Cl− > SO4−2 > Na+ > Ca+2 > K+ > Mg+2, while in wastewater samples, it is Cl− > Na+ > SO4−2 > HCO3− > Ca+2 > Mg+2 > K+. When considering iron and manganese parameters, the water quality index (WQI) values suggest that most groundwater samples exhibit excellent to good quality but become poor or very poor when these elements are included. This study could prove valuable for water resource management in the Dakhla Oasis.
Enhancing Nursing Excellence: Exploring the Relationship between Nurse Deployment and Performance
Authors: Ariga Reni Asmara , Aurelia Rebecca , Anak Ampun Paskah Thio Dora , Hutabarat Cindy Patresia , Panjaitan Ferdinand Batiscta
Published: September 2024

Proper nurse placement is crucial for enhancing the performance and quality of health services. This study aims to explore in-depth the relationship between nurse placement and performance in order to promote nursing excellence. A quantitative analysis was conducted using a descriptive correlational methodology. The population in this study consisted of 214 executive nurses at Medan Government Hospital, with a sample size of 139. The study’s findings revealed that nurses performed exceptionally well in providing nursing care, scoring 94.2%, with those well-placed scoring 90.6%. The results from the Spearman rho correlation test showed that nursing qualifications, experience, work environments, and team dynamics have significant relationships with nurse performance. Meanwhile, the nurse’s rho factor towards patients and the policy or regulation component showed low significance and relationship. The novelty of this study lies in its indication that nursing performance can be enhanced by aligning the placement of nurses with their abilities and experience, and fostering a work environment and positive team dynamics that encourage collaboration and efficiency. These findings provide vital insights for nursing staff management in order to enhance nursing care quality and patient health outcomes. This study highlights the need for suitable placement and professional development for nurses in order to attain maximum performance.
Dithiodipropionate and Fumarate Ni, Cu, and Zn Mixed Ligand Complexes
Authors: Loubalová Ivana , Kotrle Kamil , Antal Peter , Hochvaldová Lucie , Panáček Aleš , Císařová Ivana , Świątkowski Marcin , Kopel Pavel
Published: September 2024

Three nickel, copper, and zinc complexes with dicarboxylic acids (3,3′-dithiodipropionic acid (H2dtdp) and fumaric acid (H2fu)) and N-donor ligands (1,10-phenanthroline (phen), N′–methyldipropylenetriamine (mdpta), and N,N,N′,N″,N″-pentamethyldiethylenetriamine (pmdien)) were synthesized. These complexes were characterized using elemental analysis, IR spectroscopy, and single-crystal X-ray diffraction. Interestingly, [Ni(dtdp)(phen)(H2O)3]∙0.5H2O (1) is a mononuclear complex, where the dtdp dianion employs only one carboxylate group for coordination to the central nickel atom. [(ClO4)(mdpta)Cu(μ-dtdp)Cu(mdpta)(H2O)](ClO4) (2) is a dinuclear copper complex with a dtdp bridge and different coordination on the copper center. [{Zn(pmdien)(H2O)}2(μ-fu)](ClO4)2 (3) is a symmetric dimer with a bridging fumarate ligand. These coordination compounds were tested for their antibacterial activities on Escherichia coli, Pseudomonas aeruginosa, Staphylococcus aureus, and Enterococcus faecalis bacteria strains. All the complexes show moderate activities on the mentioned strains.
Synthesis and Characterization of New Copper(II) Coordination Compounds with Methylammonium Cations
Authors: Golobič Amalija , Dojer Brina , Jagodič Marko , Siher Anja , Pegan Anže , Kristl Matjaž
Published: September 2024

We synthesized four new copper(II) complexes with acetato and chlorido ligands and methylammonium (MA), dimethylammonium (DMA), and tetramethylammonium (TMA) counterions: (MA)4[Cu2Ac4Cl2]Cl2·2H2O (1), (DMA)2[Cu2Ac4Cl2] (2), (DMA)4[Cu2Ac4Cl2]Cl2·2H2O (3), and (TMA)5[Cu2Ac4Cl]Cl4·4H2O (4). All compounds were characterized by single-crystal X-ray diffraction, magnetic measurements, FTIR spectroscopy, and thermogravimetric analysis. Complexes 1, 2, and 3 consist of a dinuclear coordination anion [Cu2(Ac)4Cl2]2− with bridging acetato ligands arranged in a paddle-wheel conformation and square-pyramidal coordination around Cu(II) atoms, while the coordination anion in compound 4 is a polymeric chain, parallel to the c axis, with Cu2(Ac)4 units connected through bridging chlorido ligands. Magnetic measurements carried out between 2 K and 300 K indicate strong antiferromagnetic interactions between Cu(II) ions. The effective magnetic moments range from 1.94 μB to 2.21 μB, exceeding the spin-only value for Cu(II) ions (μeff=1.73 μB) and suggesting significant orbital contributions to the magnetic moment. Thermogravimetric analysis of all complexes showed a multistep decomposition behavior yielding elemental copper as the final product.
Investigating the Shape Memory Effect and Corrosion Resistance of the Fe-(17-2x) Mn-6Si-xNi-yCr-0.3C Alloys (x = 0, 1, 2, 3, 4; y = 0, 1, 3, 5)
Authors: Abbas Aqeel , Chang Kai-Cheng , Lin Kun-Ming , Lin Hsin-Chih
Published: September 2024

In this study, low Mn content Fe-Mn-Si-based shape memory alloys [Fe-(17-2x) Mn-6Si-xNi-yCr-0.3C (x = 0, 1, 2, 3, 4; y = 0, 1, 3, 5)] were prepared via vacuum arc remelting. The alloys were hot-rolled and solid-solution-treated at 1150 °C for 1 h followed by aging at elevated temperatures. The effects of Cr and Ni addition on the shape memory performance and corrosion resistance of the alloys in 3.5 wt% NaCl solutions were investigated using bending test and potentiodynamic polarization, respectively. It was revealed that the recoverable strain of the alloys remains larger than 2% when 1Ni is replaced with 2Mn and Cr is added. However, it becomes less than 2% in 11Mn and 9Mn alloys because of the easy formation of the α’ martensite. The shape memory effect of alloys is highly improved due to the precipitation of fine carbides in the grains by the addition of Cr and after aging treatment at elevated temperatures (≧700 °C). The highest shape recovery ratios of 88.3% for 17Mn0Ni3Cr, 94.0% for 15Mn1Ni3Cr, 94.4% for 13Mn2Ni5Cr, 88.1% for 11Mn3Ni5Cr, and 86.8% for 9Mn4Ni7Cr, respectively, were achieved after 800 °C aging treatment. The strip-like second phase (carbides) forms at the grain boundaries in the Cr-free alloys after 600 °C aging treatment. There are lots of fine carbides (M23C6 and M7C3) precipitated in the interior of the grains at the aging treatments ≧ 700 °C. However, M7C3 is eliminated at 900 °C aging treatment. The corrosion resistance results showed that the corrosion resistance of the alloys is improved by adding Cr. The maximum corrosion potentials (−0.474 V) have been observed for 13Mn2Ni5Cr, and similar mechanisms have been analyzed in all series of alloys.
Phylogeny of the Neotropical Hypoctonine Whip-Scorpions (Thelyphonida, Thelyphonidae), with Descriptions of Two New Genera and Species
Authors: Botero-Trujillo Ricardo , Moreno-González Jairo A. , Prendini Lorenzo
Published: September 2024

Thelyphonida Blanchard, 1852, also known as vinegaroons or whip-scorpions, is a small arachnid order with 140 described species contained in a single family, Thelyphonidae Lucas, 1835. Despite being conspicuous and widely distributed across the tropics and subtropics on four continents, knowledge of the order has been slow to advance. Hypoctoninae Pocock, 1899, one of four subfamilies currently recognized and one of two represented in the New World, comprises five genera. Since its inception, Thelyphonellus Pocock, 1894 has remained the only hypoctonine genus occurring in South America, with only four species described prior to the present contribution. The first detailed morphological study and phylogenetic analysis of Thelyphonellus is presented herein. The morphological phylogenetic analysis—the first for Thelyphonida—includes all except one of the previously described species of Thelyphonellus in addition to two new species described herein; the species of Ravilops Víquez and Armas, 2005 (from the Caribbean island of Hispaniola); and the monotypic Old World genus Etienneus Heurtault, 1984 (from West Africa) scored for 45 morphological characters. A single, most parsimonious phylogenetic hypothesis revealed that Thelyphonellus is paraphyletic with respect to Ravilops. The New World Hypoctoninae comprises four clades with disjunct distributions and well supported by a combination of morphological characteristics, on the basis of which four genera, two of which are new, are recognized: Ravilops, with two species, endemic to Hispaniola; Thelyphonellus, herein restricted to Thelyphonellus amazonicus (Butler, 1872) and Thelyphonellus ruschii Weygoldt, 1979, occurring in Guyana, Suriname, French Guiana, and northern Brazil; Wounaan, gen. n., containing Wounaan vanegasae (Giupponi and Vasconcelos, 2008), comb. n. and Wounaan yarigui, sp. n. from Colombia; and Yekuana, gen. n., containing Yekuana venezolensis (Haupt, 2009), comb. n. and Yekuana wanadi, sp. n. from Venezuela. The two new species are described and illustrated. A key to the identification of the Neotropical genera of Hypoctoninae and a map plotting the known distribution of its species are also presented.