bluuebunny/crossref_metadata_2025_split huggingface dataset:
Algae Biofilm Produced from Anaerobic Digester Wastewater Demonstrated as Biofertilizer for Dwarf Wheat
Authors: Watson Pascal , Sims Ronald C. 
Published: February 2025

Aims: To correlate yield of dwarf wheat fertilized with algae biofilm produced using anaerobic digester effluent (digestate) from a municipal water resource recovery facility as nutrient source and compare with yield using non-algae biofilm based fertilizers and a negative control.
Study Design: Greenhouse testing for measurement of biomass yields and statistical analysis of wheat yield data results.
Place and Duration of Study: Department of Biological Engineering Algae Processing and Products Facility greenhouse between March and June, 2024.
Methodology: Yield of a dwarf cultivar of red spring wheat was measured as a function of four treatments including three fertilizers and a negative control: (1) algae biofilm cultivated on anaerobic digester effluent, (2) positive control of Osmocote commercial slow release fertilizer, (3) anaerobic digester biosolids, and (4) negative control with no fertilizer addition.
Results: Average yield values (gm) for the four treatments were: (1) 1.25, (2) 0.99, (3) 0.72, and (4) 0.52, respectively. Algae biofilm fertilizer performed significantly better than Osmocote with P = .002, anaerobic digester biosolids with P = .05, and no fertilizer addition with P = .05. Struvite, a slow release fertilizer, was observed to be associated with the algae biofilm as a precipitate of the high concentrations of nutrients within the anaerobic digester water. Struvite (MgNH4PO46H2O) releases plant available nitrogen and phosphorus over time and is biologically precipitated due to the increase in solution pH as a result of photosynthesis by the algae biofilm.
Conclusion: Algae biofilm cultivated on anaerobic digester wastewater can serve as a biofertilizer for recycling nutrients within the biosphere for sustainable nutrient management.
Bicuspid valve CT registry of balloon‐expandable TAVR: BETTER TAVR registry
Authors: Chavarria Jorge , Falcao Felipe , AlRaddadi Hatim , Aziz Amir , Dick Alexander , Chung Kevin , Meier David , Sathananthan Janar , Ali Noman , Um Kevin John , Velianou James , Natarajan Madhu , Jaffer Iqbal , Wood David , Fam Neil , Sheth Tej 
Published: May 2024

AbstractBackgroundThe anatomic substrate of bicuspid valves may lead to suboptimal TAVR stent expansion and geometry.AimWe evaluated determinants of stent geometry in bicuspid valves treated with Sapien transcatheter aortic valve replacement (TAVR) valves.MethodsA multicenter retrospective registry of patients (February 2019 to August 2022) who underwent post‐TAVR computed tomography to determine stent area (vs. nominal valve area) and stent ellipticity (maximum diameter/minimum diameter). Predictors of relative stent expansion (minimum area/average of inflow + outflow area) and stent ellipticity were evaluated in a multivariable regression model, including valve calcium volume (indexed by annular area), presence of raphe calcium, sinus diameters indexed by area‐derived annular diameter, and performance of pre‐dilation and post‐dilation.ResultsThe registry enrolled 101 patients from four centers. The minimum stent area (vs. nominal area) was 88.1%, and the maximum ellipticity was 1.10, with both observed near the midframe of the valve in all cases. Relative stent expansion ≥90% was observed in 64/101 patients. The only significant predictor of relative stent expansion ≥90% was the performance of post‐dilation (OR: 4.79, p = 0.018). Relative stent expansion ≥90% was seen in 86% of patients with post‐dilation compared to 57% without (p < 0.001). The stent ellipticity ≥1.1 was observed in 47/101 patients. The significant predictors of stent ellipticity ≥1.1 were the indexed maximum sinus diameter (OR: 0.582, p = 0.021) and indexed intercommisural diameter at 4 mm (OR: 2.42, p = 0.001). Stent expansion has a weak negative correlation with post‐TAVR mean gradient (r = −0.324, p < 0.001).ConclusionRelative stent expansion ≥90% was associated with the performance of post‐dilation, and stent ellipticity ≥1.1 was associated with indexed intercommisural diameter and indexed maximum sinus diameter. Further studies to determine optimal deployment strategies in bicuspid valves are needed.
Enhanced Organocatalytic Processes through an Engineered Acid‐Base Site Bifunctional Pore in a Zirconium Metal‐Organic Framework
Authors: Moreno José María , Gil‐San‐Millan Rodrigo , Mas‐Ballesté Rubén , Alemán José , Platero‐Prats Ana E. 
Published: May 2024

AbstractThis work introduces a robust acid‐base catalytic system based on the zirconium‐based metal‐organic framework (Zr‐MOF) MOF‐808, selected for its open structure, high stability, and low presence of structural defects compared to other Zr‐MOFs. Four bifunctional benzoate ligands bearing free carboxylic acid (‐COOH) and nitrogen‐containing groups were introduced into the MOF‐808 using solvent‐assisted ligand exchange methods. Unlike other materials, the acid and base sites in the bifunctional MOF‐808 materials are situated in the same capping ligand, leading to a bifunctional behavior between the two neighboring sites. The system was tested for Knoevenagel condensation and deacetylation‐Knoevenagel tandem reactions, demonstrating high catalytic activity and excellent yields. Additionally, computational modeling provided insights into the catalytic mechanism and the role of the acid‐base sites. The study provides a better understanding of the unique behavior of the bifunctional MOF‐808 catalyst and offers prospects for designing new and efficient catalytic systems for organocatalysis.
Palladium‐Catalyzed Selective Syntheses of 2,3‐Allenyl Amines via Double Functionalization Coupling of 2‐Alkynyl‐1,4‐diol Dicarbonates
Authors: Zhou Zhengnan , Li Can , Ma Shengming 
Published: May 2024

Comprehensive Summary2,3‐Allenyl amines have shown wide applicability in biomedical and synthetic applications. Due to their enormous potential for applications, researchers have been dedicated to the development of methods for synthesizing 2,3‐allenyl amines. Herein, a palladium‐catalyzed three‐component reaction of 2‐alkynyl‐1,4‐diol dicarbonates, organoboronic acids, and nitrogen nucleophiles forming 2,3‐allenyl amines with excellent regio‐ and chemo‐selectivity has been developed. Substrate compatibility and synthetic applications have been demonstrated. Control experiments supported a mechanism involving 1,2,3‐triene‐Pd species and methylene‐π‐allyl palladium species.
Calcium Carbide (CaC2) as a C2‐Synthon by Mechanochemistry
Authors: Cortés‐Lobo Alejandro , Hernández José G. 
Published: May 2024

AbstractMechanochemical reactions by ball milling have opened new avenues in chemical synthesis. Particularly, mechanochemistry has facilitated the reaction of insoluble materials to simplify stablished synthetic protocols and develop new ones. One notable application involves the use of calcium carbide (CaC2) as a C2‐synthon through mechanochemistry, which has offered a more practical alternative to incorporate C2‐units compared to the conventional use of highly flammable gaseous acetylene. For example, by ball milling, the acetylenic anions [C2]2− found in CaC2 have been harnessed for the synthesis of diverse functional carbon materials as well as discrete organic molecules. This Concept aims to contribute to the conceptualization of this innovative approach while highlighting both its advantages and the challenges inherent in the use of CaC2.
Account of eco‐friendly energy conversion reaction: Iron‐based nitrogen electrofixation
Authors: Xu Liyuan , Zhu Zheng , Duan Jingjing , Chen Sheng 
Published: May 2024

AbstractAmmonia is a crucial raw ingredient used in the manufacturing of fertilizers and pharmaceuticals, which are major sectors of the national economy in the chemical and agricultural industries. The conventional Haber–Bosch method is still in use in the industry today to manufacture NH3, and the production process emits a significant quantity of CO2, which does not match the current standards for the achievement of carbon neutrality. The nitrogen reduction reaction (NRR) technology has garnered a lot of attention lately because of its benefits, which include being environmentally friendly, sustainable, and able to function in mild environments. However, NRR is still in its early stages of development and confronts numerous difficult issues, including slow reaction kinetics, low ammonia yield rates and Faradaic efficiency (FE), and a dearth of effective research on nitrogen fixation as a whole. This paper aims to promote the industrialization of NRR, summarizing the progress of iron‐based catalysts, including single atomic catalysts, organic frameworks, metal oxides the, and alloys. Eventually, this paper discusses the strategies for improving NH3 yield rates and FE, improving reaction kinetics, and building a sustainable overall nitrogen fixation system. The development of iron‐based catalysts in other fields has also been prospected.
Clinical performance of a prefabricated immunofluorescence assay for nasopharyngeal cancer screening
Authors: Chen Vanessa Hui En , Ong Lizhen , Teo Wei Keat , Siow Chor Hiang , Goh Han Lee , Tan Charmaine , Lim Wei Sian , Eu Donovan , Cheong Ian S. Y. , Chan Soh Ha , Loh Kwok Seng , Tay Joshua K. 
Published: May 2024

AbstractBackgroundEpstein–Barr virus (EBV) IgA serology for viral capsid antigen (VCA) and early antigen (EA) aids early detection of nasopharyngeal cancer (NPC), resulting in improved survival. We evaluated the diagnostic performance of a prefabricated immunofluorescent assay (IFA) for NPC screening in high‐risk individuals.MethodsSera from 96 biopsy‐proven patients with NPC diagnosed at the outpatient clinic and 96 healthy family members were tested for EBV‐VCA IgA and EBV‐EA IgA using the prefabricated IFA from EUROIMMUN (EI) and the traditional immunofluorescence method.ResultsThe AUC of EI EBV‐VCA IgA and EBV‐EA IgA was 0.907 (95% confidence interval [CI]: 0.894–0.965) and 0.898 (95% CI: 0.848–0.947), respectively. Combined testing with the prefabricated assay at a threshold of VCA ≥1:320 or EA ≥1:10 showed 92.7% sensitivity and 81.2% specificity. Overall, the traditional EBV‐EA IgA assay demonstrated the best accuracy (sensitivity 91.7% and specificity 96.9%) at a threshold of ≥1:5.ConclusionWhile the traditional IFA method was more accurate, the prefabricated IFA test kit can be a useful tool for NPC screening in high‐risk populations.
Dealing with dental disease in rabbits
Authors: Smith Molly Varga 
Published: May 2024

Background: Dental disease is still one of the most common reasons rabbits are presented to veterinary practices. Successful treatment of these challenging cases is possible in general practice, and an understanding of the dynamic function of the rabbit mouth is a good foundation for this. By employing transferable skills, the diagnosis and treatment of acquired dental disease in rabbits can be to the same standards as for other companion animals.Aim of the article: This article details the process of dealing with dental disease from history through diagnostics to physical intervention and aftercare, highlighting accessible options at all stages in these patients.
Unintended consequences: Hypotonic serum‐induced acute kidney injury in shoulder arthroscopy
Authors: Rouhani Alireza , Samankan Sama , Hamishehkar Hadi , Parish Masoud 
Published: May 2024

AbstractArthroscopic shoulder surgery is an orthopaedic technique that involves the use of normal saline or hyperosmolar serums as irrigation. The mentioned operation is commonly regarded as a safe medical intervention. Occasionally, it may have serious repercussions for the patient. Fluid extravasation into muscle tissues and tissue injury and instability are possible consequences. This can be affected by the type and amount of serum used and the length of the surgery. The objective of this study was to document four cases of shoulder arthroscopy in which sterile distilled water, wrongly labelled as irrigation fluid, was utilized during the surgical procedure. Patients were readmitted a week after discharge due to acute kidney injury symptoms like fatigue and lethargy. All four patients were released after haemodynamic stability and normalization after haemodialyses. Due to the incident, serums should be closely monitored and labeled for the safety of patients. Additionally, distilled water as an irrigation solution in arthroscopic surgeries can harm patients. Although normal saline and hyperosmolar serums are unavailable, this remains true.Level of EvidenceLevel IV.
Guests’ Perceptions of Smart Technology Security and Privacy: The Case of Hotels in Athens Metropolitan Area
Authors: Katartis Konstantinos , Skordoulis Michalis , Panagopoulou Dionysia , Chalikias Miltiadis , Sidiropoulos Georgios , Ntanos Stamatios 
Published: May 2024

AbstractDuring the last decades, hotels in Greece are trying to benefit from an undergoing digital transformation, since they are trying to create and implement digital solutions. The aim of this research is to analyze guests’ perceptions on the security and privacy of smart technology applications in hotels of Athens. This study offers a framework for understanding smart technology’s applications and effects on the hospitality sector. The research also analyzes the implementation of smart technology, guests’ familiarity with technology and examines security issues stemming from using smart technology in hotels in Athens. For this purpose, a survey was carried out to analyzing the perceptions of people who stayed or visited a hotel in Athens during the last three years. The results revealed how hotel guests feel about the security of technological applications in hotels. This study contributes to raising awareness regarding the attitudes that guests have for smart technology and how far they are willing to accept it.
Enhancement of Social and Teamwork Skills Through Blended Learning Methodology in Accounting Studies
Authors: Kottara Chara , Asonitou Sofia , Mukokoma Mary Maurice Nalwoga , Gonidakis Fragkiskos , Kavalieraki-Foka Dimitra 
Published: May 2024

AbstractAccording to accounting employers only technical skills are not considered sufficient for a successful accounting career in the new global business environment. Modern accountants need a range of social skills such as teamwork, agility, leadership, and personal skills. Accounting education through diverse teaching methodologies such as blended learning, seeks to create well rounded accounting professionals. The objective of the present study is to examine the students’ views about teamwork skills. The research is based on a pilot study with interviews conducted with students through a qualitative methodology plan. Results show the need to reorganize educational processes and activities in order to promote teamwork among university students in Greece. Professors, students, and universities can benefit from this research. Specifically, the recognition of the necessity for educational planning in accounting courses is crucial in order for students to acquire both knowledge and skills, such as teamwork, which is deemed essential for their academic journey and smooth transition into the labour market.
The Impact of Covid-19 Pandemic in Financial Performance of Firms Listed in the Athens Stock Exchange
Authors: Diamanti Olga , Tzovas Christos , Sykianakis Nicos 
Published: May 2024

AbstractThe world was severely affected by the COVID-19 outbreak, causing, among others, possibly the worst global recession since 1930s. Of course not all sectors of economic activity were influenced in a similar way. While pharmaceutical companies had a boost in their profitability, other sectors including travel, tourism and leisure experienced huge losses and needed to be subsidized by the government. The current study investigates the impact of COVID-19 pandemic in the financial performance of firms listed in the Athens Stock Exchange (ASE). The sample includes 82 companies listed in the ASE during the period 2018–2021 according to clearly defined criteria. The selected firms represent a wide variety of business sectors, both industrial and services. The financial performance of those firms is depicted by a set of financial ratios. Findings of the empirical analysis do not suggest that pandemic had a significant impact on the financial performance of the sample firms. However, sectoral classification appears to affect the association between financial performance and pandemic. It appears that Industrial Mining and Metals firms and General Retail firms experienced an increase in their liquidity and profitability in the pandemic period while their leverage decreased in the same period. On the other hand, Technology and Hardware firms and Travel Leisure firms experienced a decrease in their liquidity and profitability, but an increase in their leverage. Generally speaking, services and crowd-dependent industries (such as that tourism) are most negatively impacted by the current COVID-19 pandemic. The findings of this study maybe useful to potential investors for making investment decisions as well as to policy makers for dealing with risk and the consequences of unpredictable events.
From an Integrated Tourism Model to a Place Branding Strategy. Perspectives of Mediterranean Tourism Experts
Authors: Papatheochari Theodora , Koutsopoulou Antonia , Moloni Pelagia , Niavis Spyros 
Published: May 2024

AbstractThe development of new and/or alternative tourism models has been an important practice towards effective and sustainable tourism management. Their aim is to ensure that tourism development is achieved through the lens of integration, responsibility and sustainability. The production of such models usually lacks the incorporation of place branding perspectives. Place branding strategies can act as important promotion actions of a tourism product, which is designed as a place-based strategy. In this context, this paper seeks to identify the parameters through which an integrated model could be transformed into a place branding strategy or incorporate place branding perspectives in order to promote the model itself as well as the destination as a whole. In order to do so, this paper builds upon the experience on tourism models developed under the Sustainable Tourism Community (STC) of projects of Interreg MED Programme. The method to serve the aim of the paper is dedicated interviews addressed to representatives of the STC, who have a good knowledge of their project activities and are experts in the field of tourism. The findings reveal that building a place branding strategy connected to the tourism models could be a valuable asset towards the sustainable development of tourist destinations. Although the development of tourism models share similar principles with place branding strategies, the key challenge is to align their focus since branding strategies are more place-based approaches with emphasis on the destination, while tourism models have a wider context with emphasis on the tourism type.
Digital Literacy Education and Cyberbullying Combat: Scope and Perspectives
Authors: Fonseca Josélia , Borges-Tiago Teresa 
Published: May 2024

AbstractThe growing globalization process has boosted the rapid development of the digital era and technology and given rise to a new concept of citizenship, that of global citizenship and cyber-citizenship, which imposes a new way of being and knowing how to act with others. The cyberbullying phenomenon and the preoccupation to combat it emerged in this context. This paper reflects on the role of education in digital literacy to prevent cyberbullying using a citation-based literature review conducted using this trilogy. Digital literacy was found to help individuals understand appropriate online behaviour and ethical guidelines, enabling them to recognize what constitutes cyberbullying and understand the potential consequences of their actions. By promoting responsible online behaviour, digital literacy can reduce the incidence of cyberbullying. Digital literacy empowers individuals to recognize signs of cyberbullying, whether they are victims or bystanders. By being aware of different forms of cyberbullying, such as harassment, impersonation, or spreading rumours, individuals can identify when they or others are being targeted. This awareness allows for early intervention and support. Moreover, digital literacy encourages individuals to be active bystanders and intervene when they witness cyberbullying. It gives them the knowledge and skills to respond appropriately, such as reporting the incident to relevant authorities or supporting the victim. By empowering bystanders, digital literacy promotes a collective effort to combat cyberbullying. In conclusion, digital literacy is crucial in comprehending and addressing cyberbullying, equipping individuals with knowledge, skills, and a responsible mindset for engaging in the digital world.
Cultural Tourism and Cultural Heritage Connected with Digital Marketing in Western Macedonia
Authors: Evangelou Paraskevi A. , Broni Georgia K. , Antoniadis Ioannis I. 
Published: May 2024

AbstractCulture and cultural organizations are directly linked to the course of a place. Culture also influences travelers, causing a wave of cultural tourism. Many archaeological sites throughout Greece are of particular interest and are visited by Greeks as well as foreign visitors. However, technological development and the continuous spread of social media, in combination with the evolution and change of marketing to digital marketing, is expected to raise the question of whether cultural tourism can be connected to the digital form of marketing. By carrying out a research questionnaire, we aimed to study how culture and cultural monuments in the region of Western Macedonia are connected with promotion, advertising, and marketing in the digital space to boost cultural tourism in the region. The total convenient sample comprised 412 responses, with the majority coming from the wider area of Western Macedonia. The purpose of our research is to approach, understand, and present the necessity of connecting cultural heritage to the development of technology. As a result, we obtain the drawing of conclusions about the behavior of individuals regarding cultural tourism. Cultural organizations using social media can promote their work and achieve interaction with their audience.