bluuebunny/crossref_metadata_2025 huggingface dataset:
Dengue virus transmission risk in blood donation: Evidence from Thailand
Authors: Limothai Umaporn , Tachaboon Sasipha , Dinhuzen Janejira , Singh Jasleen , Leewongworasingh Akarathep , Watanaboonyongcharoen Phandee , Fernandez Stefan , Hunsawong Taweewun , Farmer Aaron R. , Tantawichien Terapong , Thisyakorn Usa , Srisawat Nattachai
Published: May 2024

Individuals infected with dengue virus (DENV) often show no symptoms, which raises the risk of DENV transfusion transmission (TT‐DENV) in areas where the virus is prevalent. This study aimed to determine the evidence of DENV infection in blood donors from different geographic regions of Thailand. A cross‐sectional study was conducted on blood donor samples collected from the Thai Red Cross National Blood Center and four regional blood centers between March and September 2020. Screening for DENV nonstructural protein 1 (NS1), anti‐DENV immunoglobulin G (IgG), and IgM antibodies was performed on residual blood from 1053 donors using enzyme‐linked immunosorbent assay kits. Positive NS1 and IgM samples indicating acute infection were verified using four different techniques, including quantitative real‐time (q) RT‐PCR, nested PCR, virus isolation in C6/36 cells, and mosquito amplification. DENV IgG seropositivity was identified in 89% (938/1053) of blood donors. Additionally, 0.4% (4/1053) and 2.1% (22/1053) of Thai blood donors tested positive for NS1 and IgM, respectively. The presence of asymptomatic dengue virus infection in healthy blood donors suggests a potential risk of transmission through blood transfusion, posing a concern for blood safety.
Casein‐based nanocarriers for encapsulation of propolis extract: Design, fabrication, and characterization
Authors: Feizy Javad , Soleimanifard Mansooreh , Maestrelli Francesca
Published: May 2024

Background

Propolis exhibits multiple biological and pharmacological properties attributed to the presence of natural bio active compounds. In spite of its potential healthy effects, its use in health‐food and pharmaceutical products is very restricted due to its intense aroma, highly unstable, low aqueous solubility, and low bioavailability. The purpose of this study is to fabricate an appropriate, stable, and biodegradable casein‐based nanocarrier as propolis delivery system. Propolis‐loaded casein nanocarriers were prepared at different propolis extract/caseinate ratio and assessed for physicochemical, structural, and thermal properties.

Results

The nanocarriers showed an increase of particle size augmenting propolis extract/caseinate ratio and caseinate concentration. Image processing studies revealed an increase in L* parameter (89.743), while b* parameter revealed a reduction in the yellow color (14.655) increasing the amount propolis extract in the nanocarrier. Surface photomicrographs evidenced that an increment of propolis extract decreased the network compactness of the nanocarriers correlated with the lower entrapment of propolis extract into carriers at higher propolis extract/caseinate ratio. X‐ray diffraction pattern suggested that propolis encapsulation produced a decrement in the caseinate crystallinity while differential scanning calorimetry and thermogravimetric/differential thermal analysis thermograms evidenced an increment of thermal stability of nanocarrier with increasing propolis extract content.

Conclusion

Propolis extract encapsulated within casein nanocarriers represented convenient physicochemical attributes and could provide as bioactive load in food/medical system.
Effect of buffer pH on methane production and fermentation characteristics of three forages tested in vitro
Authors: Della Rosa Maria M. , Jonker Arjan , Janssen Peter H. , Reid Peter , Pacheco David , Muetzel Stefan
Published: May 2024

BACKGROUND

Low rumen pH is proposed to be a major mechanism for low methane (CH4) emissions from sheep fed forage rape. However, it is difficult to separate this from other in vivo factors, such as rumen passage rate. The objective of this study was to determine the effect of pH alone on CH4 production in vitro using different pH buffers. Ryegrass, white clover and forage rape were incubated in vitro using three different incubation buffers with starting pH values of 5.5, 6.2 and 6.8.

RESULTS

Decreasing pH reduced overall in vitro CH4 emission relative to fermented hexoses (CH4/FHex) by up to 54% and overall fermentation by 40%. pH also changed fermentation profiles where the acetate + butyrate to propionate + valerate ratio decreased when pH decreased. Within the three forages, forage rape led to the lowest CH4/FHex, but only in pH 5.5 and 6.2 buffer, and this was enhanced when the pH fell below 6.

CONCLUSION

Reducing pH in vitro decreased CH4 production and overall fermentation across all forages. The lower pH reached by forage rape compared to ryegrass and white clover appears to drive the lower CH4 production relative to the extent of fermentation from forage rape compared to the other forages. © 2024 The Author(s). Journal of The Science of Food and Agriculture published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.
Investigating the effect of climate factors on fig production efficiency with machine learning approach
Authors: Sahın Demırel Ayca Nur
Published: May 2024

BACKGROUND

This study employs a machine learning approach to investigate the impact of climate change on fig production in Turkey. The eXtreme Gradient Boosting (XGBoost) algorithm is used to analyze production performance and climate variable data from 1988 to 2023. Fig production is a significant component of Turkey's agricultural economy. Therefore, understanding how climate change affects fig production is essential for the development of sustainable agricultural practices.

RESULTS

Despite an observed increase in fig production between 2005 and 2020, potential yield may be negatively impacted by climate variables. Identifying the specific climatic factors affecting fig production efficiency remains a challenge. In the study, two different machine learning models are created: one for fig production yield per decare and another for fig production yield per bearing fig sapling. Eight climate variables (16 variables considering day and night values) serve as independent variables in the models. The models reveal that temperature change has the highest impact, with a percentage contribution of 41.30% in the first model and 43.90% in the second model. Thermal radiation (day and night) and 2 m temperature also significantly affect individually fig production. Wind speed, precipitation and humidity contribute to a lesser extent.

CONCLUSION

This study illuminates the intricate interrelationship between climate change and fig production in Turkey. The utilization of machine learning as a predictive tool for future production trends and an instrument for informing agricultural practices is a valuable contribution to the field. © 2024 The Author(s). Journal of The Science of Food and Agriculture published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.
Development of a diagnostic support system for the fibrosis of nonalcoholic fatty liver disease using artificial intelligence and deep learning
Authors: Preechathammawong Noppamate , Charoenpitakchai Mongkon , Wongsason Nutthawat , Karuehardsuwan Julalak , Prasoppokakorn Thaninee , Pitisuttithum Panyavee , Sanpavat Anapat , Yongsiriwit Karn , Aribarg Thannob , Chaisiriprasert Parkpoom , Treeprasertsuk Sombat , Chirapongsathorn Sakkarin
Published: May 2024

Liver fibrosis is a pathological condition characterized by the abnormal proliferation of liver tissue, subsequently able to progress to cirrhosis or possibly hepatocellular carcinoma. The development of artificial intelligence and deep learning have begun to play a significant role in fibrosis detection. This study aimed to develop SMART AI‐PATHO, a fully automated assessment method combining quantification of histopathological architectural features, to analyze steatosis and fibrosis in nonalcoholic fatty liver disease (NAFLD) core biopsies and employ Metavir fibrosis staging as standard references and fat assessment grading measurement for comparison with the pathologist interpretations. There were 146 participants enrolled in our study. The correlation of Metavir scoring system interpretation between pathologists and SMART AI‐PATHO was significantly correlated (Agreement = 68%, Kappa = 0.59, p‐value <0.001), which subgroup analysis of significant fibrosis (Metavir score F2‐F4) and nonsignificant fibrosis (Metavir score F0‐F1) demonstrated substantial correlated results (agreement = 80%, kappa = 0.61, p‐value <0.001), corresponding with the correlation of advanced fibrosis (Metavir score F3‐F4) and nonadvanced fibrosis groups (Metavir score F0‐F2), (agreement = 89%, kappa = 0.74, p‐value <0.001). SMART AI‐PATHO, the first pivotal artificially intelligent diagnostic tool for the color‐based NAFLD hepatic tissue staging in Thailand, demonstrated satisfactory performance as a pathologist to provide liver fibrosis scoring and steatosis grading. In the future, developing AI algorithms and reliable testing on a larger scale may increase accuracy and contribute to telemedicine consultations for general pathologists in clinical practice.
Autologous osteoperiosteal transplantation is effective in the treatment of single cystic osteochondral lesions of the talus and the prognostic impact of age should be emphasized
Authors: Cao ShiHang , Ding Nan , Zan Qiang , Lu Jun , Li Yi , Tian Feng , Xu JunKui
Published: May 2024

Purpose

To investigate the clinical efficacy and prognostic factors associated with autologous osteoperiosteal transplantation for the treatment of single cystic osteochondral lesions of the talus (OLT).

Methods

The clinical data of patients with single cystic OLT undergoing autologous osteoperiosteal transplantation at the Department of Foot and Ankle Surgery of our hospital between 2018 and 2022, including complete follow‐up, were retrospectively analyzed. Imaging data from each patient were imported into Mimics software to measure the surface area, volume and depth of the lesions. Then, the talus nine‐compartment partitioning method was used to partition the injury site. Preoperative and final follow‐up assessments were performed using the American Orthopaedic Foot and Ankle Society (AOFAS) score, visual analogue scale (VAS) for pain and 36‐item Short‐Form Health Survey (SF‐36) to evaluate treatment efficacy and analyze prognostic factors.

Results

Of the 31 patients with single cystic OLT with a complete set of follow‐up data, there were 17 males and 14 females, with a mean age of 43.3 ± 13.6 years, a mean follow‐up time of 30.1 ± 14.0 months and a mean illness duration of 30.4 ± 20.0 months. The postoperative final follow‐up AOFAS score was 90.7 ± 5.5; this represented significant improvement when compared to the preoperative score of 57.0 ± 8.5 (P < 0.001). The final postoperative follow‐up VAS score was 18.5 ± 8.3; this was significantly better than the preoperative score of 57.8 ± 8.7 (P < 0.001). The physical component summary (PCS) score and mental component summary (MCS) score on the SF‐36 scale showed significant improvement at the final postoperative follow‐up when compared to preoperative scores (p < 0.001). No other complications were observed during follow‐up, such as wound infection or pain at the donor site. One of the patients showed less improvement, which may be related to premature weight‐bearing or re‐sprained ankle after surgery. There was no significant correlation between the duration of illness, gender and the location, depth, surface area and volume of the OLT and the postoperative scores. However, patient age showed a significant negative correlation with the postoperative SF‐36 PCS and MCS scores.

Conclusion

Autologous osteoperiosteal transplantation for single cystic OLT demonstrated good clinical efficacy with a low incidence of complications. Furthermore, age represents an important factor influencing prognosis.

Level of Evidence

Level II.
Effects of Histidine Oligomers in Lipid Nanoparticles on siRNA Delivery
Authors: Lee Hyeondo , You Gayeon , Yeo Sangho , Lee Hyukjin , Mok Hyejung
Published: May 2024

In this study, histidine oligomer (oHis; 10mer)‐incorporating LNPs (H10LNPs) are developed as a novel carrier for efficient siRNA delivery. Notably, the unmodified oHis (10mer) is greatly incorporated within LNPs through ionic interaction with siRNAs, which serves as an endosome escape enhancer. H10LNPs with a size of ≈65 nm demonstrate a significantly enhanced extent of endosomal escape, as evidenced by calcein assay and confocal microscopy images of intracellular fluorescence, surpassing conventional LNPs. Furthermore, the half inhibitory concentration (IC50) of the human endogenous globotriaosylceramide synthase (Gb3 synthase) gene in H10LNPs‐treated cells exhibits a significant threefold decrease, compared to that in LNP‐treated cells. Notably, H10LNPs maintain comparable biocompatibility and biodistribution both in vitro and in vivo. Considering that the fabricated siRNA H10LNPs exhibit excellent biocompatibility and superior gene silencing activity over conventional LNPs, these particles can be harnessed for the safe delivery of therapeutic siRNAs. Additionally, this study introduces promising, feasible, simple, and alternative formulation processes for integrating unmodified functional cationic peptides into LNPs to enhance the delivery efficiency of a wide range of nucleic acid‐based drugs.
Vitamin D Reduces the Activity of Adenosine Deaminase and Oxidative Stress in Patients with Type Two Diabetes Mellitus
Authors: Alfaqih Mahmoud A. , Ababneh Ebaa , Mhedat Khawla , Allouh Mohammed Z.
Published: May 2024

Scope

Patients with Type 2 diabetes mellitus (T2DM) have lower levels of vitamin D. An elevation in uric acid (UA) contributes to T2DM via an increase in oxidative stress. Adenosine deaminase (ADA) is an enzyme of the purine degradation pathway. It is hypothesized that a reduction of ADA activity via vitamin D supplementation reduces UA and oxidative stress.

Methods and results

A total of 162 participants (81 with T2DM and 81 controls) are enrolled in a case–control study. A follow‐up interventional study is performed on 30 patients with vitamin D deficiency. These patients receive 50 000 IU (international units) of vitamin D3 on a weekly basis for 12 weeks. This intervention is followed by the measurement of several markers. T2DM patients has higher ADA activity, UA, and lipid peroxidation but lower 25‐hydroxy‐vitamin D (25 (OH) vitamin D) and GSH/GSSG ratio (p < 0.05). Vitamin D supplementation results in a reduction of ADA activity and UA levels (p < 0.05) along with an increase in GSH/GSSG ratio (p < 0.05).

Conclusion

The results highlight the presence of an axis in T2DM patients between ADA, UA, and oxidative stress. Modulation of this axis can be achieved by clinically approved vitamin D supplementation protocols.
GABA‐edited MEGA‐PRESS at 3 T: Does a measured macromolecule background improve linear combination modeling?
Authors: Davies‐Jenkins Christopher W. , Zöllner Helge J. , Simicic Dunja , Hui Steve C. N. , Song Yulu , Hupfeld Kathleen E. , Prisciandaro James J. , Edden Richard A. E. , Oeltzschner Georg
Published: May 2024

Purpose

The J‐difference edited γ‐aminobutyric acid (GABA) signal is contaminated by other co‐edited signals—the largest of which originates from co‐edited macromolecules (MMs)—and is consequently often reported as “GABA+.” MM signals are broader and less well‐characterized than the metabolites, and are commonly approximated using a Gaussian model parameterization. Experimentally measured MM signals are a consensus‐recommended alternative to parameterized modeling; however, they are relatively under‐studied in the context of edited MRS.

Methods

To address this limitation in the literature, we have acquired GABA‐edited MEGA‐PRESS data with pre‐inversion to null metabolite signals in 13 healthy controls. An experimental MM basis function was derived from the mean across subjects. We further derived a new parameterization of the MM signals from the experimental data, using multiple Gaussians to accurately represent their observed asymmetry. The previous single‐Gaussian parameterization, mean experimental MM spectrum and new multi‐Gaussian parameterization were compared in a three‐way analysis of a public MEGA‐PRESS dataset of 61 healthy participants.

Results

Both the experimental MMs and the multi‐Gaussian parameterization exhibited reduced fit residuals compared to the single‐Gaussian approach (p = 0.034 and p = 0.031, respectively), suggesting they better represent the underlying data than the single‐Gaussian parameterization. Furthermore, both experimentally derived models estimated larger MM fractional contribution to the GABA+ signal for the experimental MMs (58%) and multi‐Gaussian parameterization (58%), compared to the single‐Gaussian approach (50%).

Conclusions

Our results indicate that single‐Gaussian parameterization of edited MM signals is insufficient and that both experimentally derived GABA+ spectra and their parameterized replicas improve the modeling of GABA+ spectra.
Effect of molybdenum disulfide functionalized multiwalled carbon nanotubes based hybrid on morphology, mechanical and thermal properties of epoxy nanocomposites
Authors: Varghese Arun Sam , M. S. Sreekanth
Published: May 2024

Three‐dimensional molybdenum disulfide (MoS2) functionalized MWCNTs hybrid nanoparticles were synthesized using in‐situ hydrothermal reaction. Two types of hybrids, MoS2/MWCNTs‐1 and MoS2/MWCNTs‐2 with MWCNTs to MoS2 precursor weight ratios 1:2 and 1:1 respectively were prepared with varying degrees of hybridization and the effects of their incorporation on tensile strength and fracture toughness properties of epoxies were investigated. Epoxy/MoS2/MWCNTs‐2 nanocomposites showed exceptional mechanical properties due to their improved dispersion, constrained chain mobility and excellent interfacial interactions. MoS2/MWCNTs‐2 nanocomposites showed maximum improvement of tensile strength by 28.52% at 0.5 wt% nanofiller concentration and the highest improvements in fracture toughness by 172% at 0.2 wt% nanofiller concentration. The excellent enhancement of fracture toughness properties was due to the synergic effect of MoS2/MWCNTs hybrid nanoparticles due to the crack pinning and bifurcation properties of MoS2 nanoparticles along with the pull‐out and crack bridging mechanisms of MWCNTs as observed in morphological analysis of fractures nanocomposites. The incorporation of 0.2 wt% of MoS2/MWCNTs‐2 increased the degradation temperatures of epoxy from 591 to 796°C at 95% weight loss due to the improved physical barrier effect.

Highlights

MoS2/MWCNTs nanoparticles were synthesized using in‐situ hydrothermal reaction

0.5 wt% MoS2/MWCNTs‐2 incorporated epoxies showed highest tensile strength

0.2 wt% MoS2/MWCNTs‐2 incorporated epoxy composites show improved K1c value

Incorporation of MoS2/MWCNTs improved the thermal stability of epoxy

Synergistic effect of nanocomposite due to crack pinning, bifurcation & bridging
Synthesis and characterization of bio‐based poly(urethane‐urea) nanocomposite coatings employing cellulose nanocrystals incorporated by two different routes
Authors: Herran Rodrigo , Molinari Fabricio Nicolás , Cimas Axel Javier , Karp Federico , Amalvy Javier Ignacio
Published: May 2024

During the last decades, the interest in the development of materials fully or partially biobased has increased. Polyurethanes are extensively used in a wide range of industries because of their versatility. The present work explores the synthesis of partially biobased poly(urethane‐urea) (PUU) composites employing soy‐based polyol (SPO) and cellulose nanocrystals (CNC). The latter were incorporated during the synthesis (in‐situ) or after the synthesis (ex‐situ). The possibility of a technological application as coatings was investigated for the designed materials. Polycaprolactone diol was used as a soft segment due to high functionality of the soy‐based polyol. The physicochemical, thermal and mechanical properties of the prepared matrices were analyzed. Poly(urethane‐urea)s containing up to 20% by weight of biobased polyol showed coating application potentiality. Compared to a polycaprolactone‐based polyurethane, the utilization of the bioprecursor enhanced light absorption in the UV–Vis region. In addition, partially biobased systems showed better mechanical resistance (Young's modulus increased up to 6 times) and hydrophobicity (sweeling decreased from 60 to 8 per cent by weight). Incorporation of cellulose nanocrystals affected primarily the physicochemical and rheological properties of dispersions. Regarding coating properties, nanocrystals utilization complemented the soy‐based polyol improving the performance of the films. Furthermore, the incorporation route affected the dispersions and films properties.

Highlights

SPO was incorporated up to 20 per cent by weight in PUU composites.

Higher SPO contents improved UV–Vis absorption and tensile strength of films.

Films were less hydrophilic as more SPO was incorporated.

The CNC‐reinforcement was complementary to the utilization of the SPO.

CNC incorporation route affects properties and performance of the coatings.
Improvement of thermal, mechanical, and electromagnetic interference shielding properties of polyethylene nanocomposites by introducing non‐covalently modified carbon nanotube and reactive polyethylene copolymer
Authors: Tang Feng , Song Young‐Gi , Park Jin‐Hyeok , Moon Jongho , Lee Jun‐Hyeop , Lee Shinwoo , Jeong Young Gyu
Published: May 2024

We herein report the enhancement of thermal, electrical, electromagnetic interference (EMI) shielding, and mechanical performance of polyethylene (PE) nanocomposites by the introduction of non‐covalently modified multi‐walled carbon nanotube (MWCNT) and ethylene‐glycidyl methacrylate (EGMA) copolymer. For this purpose, benzylacetic acid‐functionalized MWCNT (BA‐M) is prepared by ball milling, and it is melt‐mixed with EGMA to prepare a masterbatch. The masterbatch is then melt‐compounded with neat PE to manufacture a series of PE/EGMA/BA‐M nanocomposites with 0.5–5 wt% MWCNTs. Electron microscopic and spectroscopic analyses confirm the successful fabrication of non‐covalently functionalized BA‐M, the uniform dispersity of MWCNTs in the PE matrix, and the chemical reactions between the carboxylic acid groups of BA‐M and the epoxy group of EGMA in the nanocomposites. Scanning calorimetric data reveals that BA‐M acts as an efficient nucleating agent for the crystallization of PE. The excellent dispersity and robust interfacial bonding of BA‐M in the PE matrix result in improved electrical and EMI shielding properties in PE/EGMA/BA‐M nanocomposites. Furthermore, the tensile strength, initial modulus, and impact strength of the nanocomposites gradually rise as the BA‐M content increases. Thus, the PE/EGMA/BA‐M nanocomposite containing 5 wt% MWCNT achieves excellent performance of EMI shielding effectiveness of ~14.7 dB/mm, tensile strength of ~34.5 MPa, initial modulus of ~295.7 MPa, and impact strength of ~539.9 J/m, which represent enhancements of ~265%, ~40%, ~82%, and ~452%, respectively, compared to pristine PE.

Highlights

Non‐covalently modified MWCNT (BA‐M) was prepared by facile ball milling.

PE nanocomposites with BA‐M and EGMA were prepared by masterbatch melt‐mixing.

Excellent dispersity and interfacial bonding of MWCNT in the PE matrix were attained.

Tensile strength and initial modulus of the nanocomposites were highly improved.

EMI shielding effectiveness of the nanocomposite with 5 wt% MWCNT was ~14.7 dB/mm.
A novel Burkholderia pyrrocinia strain effectively inhibits Fusarium graminearum growth and deoxynivalenol (DON) production
Authors: Dan‐dan Wang , Jia‐jun Nie , Rui‐bian Zhao , Jie Lu , Yuan‐xu Wei , Liu Yu , Fei‐fei Chen , Yue‐min Pan
Published: May 2024

BACKGROUND

Fusarium graminearum is a devastating fungal pathogen that poses a significant threat to global wheat production and quality. Control of this toxin‐producing pathogen remains a major challenge. This study aimed to isolate strains with antagonistic activity against F. graminearum and at the same time to analyze the synthesis of deoxynivalenol (DON), in order to provide a new basis for the biological control of FHB.

RESULTS

Total of 69 microorganisms were isolated from the soil of a wheat‐corn crop rotation field, and an antagonistic bacterial strain F12 was identified as Burkholderia pyrrocinia by molecular biology and carbon source utilization. F. graminearum control by strain F12 showed excellent biological activities under laboratory conditions (95.8%) and field testing (63.09%). Meanwhile, the DON content of field‐treated wheat grains was detected the results showed that F12 have significantly inhibited of DON, which was further verified by qPCR that F12 produces secondary metabolites that inhibit the expression of DON and pigment‐related genes. In addition, the sterile fermentation broth of F12 not only inhibited mycelial growth and spore germination, but also prevented mycelia from producing spores.

CONCLUSION

In this study B. pyrrocinia was reported to have good control of FHB and inhibition of DON synthesis. This novel B. pyrrocinia F12 is a promising biological inoculant, providing possibilities for controlling FHB, and a theoretical basis for the development of potential biocontrol agents and biofertilizers for agricultural use. © 2024 Society of Chemical Industry.
Entropy‐Driven Ostwald Ripening Reversal Promotes the Formation of Low‐Platinum Intermetallic Fuel Cell Catalysts
Authors: Li Shuo‐Bin , Yin Peng , Xu Cong , Xue Kun‐Ze , Kong Yuan , Zuo Ming , Zhang Wan‐Qun , Liang Hai‐Wei
Published: May 2024

Strain engineering has been widely used to optimize platinum‐based oxygen reduction reaction (ORR) catalysts for proton exchange membrane fuel cells (PEMFCs). PtM3 (M is base metals), a well‐known high‐compressive‐strain intermetallic alloy, shows promise as a low platinum ORR catalyst due to high intrinsic activity. However, during the alloying of Pt with a threefold amount of M, a notable phase separation between Pt and M may occur, with M particles rapidly sintering while Pt particles grow slowly, posing a challenge in achieving a well‐defined PtM3 intermetallic alloy. Here, an entropy‐driven Ostwald ripening reversal phenomenon is discovered that enables the synthesis of small‐sized Pt(FeCoNiCu)3 intermetallic ORR catalysts. High entropy promotes the thermodynamic driving force for the alloying Pt with M, which triggers the Ostwald ripening reversal of sintered FeCoNiCu particles and facilitates the formation of uniform Pt(FeCoNiCu)3 intermetallic catalysts. The prepared Pt(FeCoNiCu)3 catalysts exhibit a high specific activity of 3.82 mA cm−2, along with a power density of ≈1.3 W cm−2 at 0.67 V and 94 °C with a cathode Pt loading of 0.1 mg cm−2 in H2–air fuel cell.
Electromagnetic Wave Absorption Properties of Single‐Source‐Precursor Derived CNWs/Ni2Si/SiOC Nanocomposites
Authors: Chen Ting , Du Hanzi , Riedel Ralf , Yu Zhaoju
Published: May 2024

This work successfully fabricated a novel CNWs/Ni2Si/SiOC nanocomposite ceramic material using a single‐source‐precursor derived ceramic approach. The material exhibits in‐situ formation of carbon nanowires (CNWs) and multiple core‐shell nanoparticles such as Ni2Si@C and SiC@C. The reaction mechanism of the precursor, the microstructure and phase composition, and the ceramics′ electromagnetic wave (EMW) absorbing properties were thoroughly investigated and discussed. The obtained CNWs/Ni2Si/SiOC nanocomposite ceramics possesses a minimum reflection loss (RLmin) of −43.5 dB, indicating excellent EMW absorbing performance. The in‐situ formation of CNWs and multi‐core‐shell nanoparticles (Ni2Si@C and SiC@C) in the ceramics play a crucial role in enhancing their EMW absorbing properties compared to pure SiOC ceramics.
Teaching Professional Communication: A Practical Approach
Authors: Nikolopoulou Katerina , Miliopoulou Georgia-Zozeta
Published: May 2024

The purpose of this paper is to discuss the importance of soft skills in the workplace and presents an approach on teaching professional communication to college students one of the introductory courses taught in almost every Higher Institution in the U.S and abroad. Soft skills in the last decade and particularly in the after COVID-19 era are valued more than the hard ones during the hiring process. Communication skills, oral and written, have become necessary in all working environments. The paper discusses how informative and persuasive structures can help students not only how to communicate more effectively but also how to think more efficiently, organize their thinking and respond to professional challenges. As current trends and social media change the communication habits of young adults, teaching ways to think and speak or write is essential. This paper is for professionals and academics who delve in communication skills as an area of research and practice.
The Role of Corporate Social Responsibility Policies in Companies in Greece in the Recruitment of Young Talented Employees
Authors: Panagopoulou Maria , Xanthopoulou Panagiota , Sahinidis Alexandros
Published: May 2024

Corporate Social Responsibility (CSR) has become an important factor for the development of organizations and companies at all levels, as it encompasses actions in various areas and highlights the importance of aligning decisions with human resources and the social environment. The purpose of this study is to investigate the relationship between CSR and organizational attractiveness, which pertains to the level of appeal a company holds for its employees as well as job seekers. The research was conducted using a quantitative method and convenience sampling, involving 121 individuals 22 years and older, who are currently or have previously been employed by companies in Greece. Participants responded to questionnaires consisting of closed-ended questions, where they selected their answers using a seven-point scale. The collected data were then analyzed using the SPSS software. The research results revealed a significant correlation between CSR and organizational attractiveness, with corresponding implications for employee organizational commitment. The results have important implications for Human Resource managers and organizational strategists, as well as academics of the field. After all, human resources and talent management claims that CSR is a regulatory factor in talent management, this is because CSR gives every company the opportunity to use challenges and values in order to create and organize more targeted and better quality programs to engage talented workers and seem worthy of his expectations.
Workers’ Competencies in the Context of Industry 4.0. The Case of Poland
Authors: Barwińska-Małajowicz Anna , Pyrek Radosław
Published: May 2024

Competencies play an extremely important role in today's world. The discussion around human resources is increasing in the context of the fourth industrial revolution. There is an emerging need for competencies that enable employees, businesses and society to function effectively in the digital reality. Competition in the digital era is increasing and more aggressive. Employers need highly skilled employees who can handle all the new market challenges. Competencies of Industry 4.0 help companies stay competitive and adapt to a rapidly changing business environment. Investing in the development of employees to increase their competence brings many benefits and contributes to the long-term success of companies in all sectors and industries. The article focuses on competencies that are essential in the context of Industry 4.0, such as creativity and innovation, critical thinking skills, digital competencies, problem-solving skills, communication and collaboration, entrepreneurship and the process of permanent learning. The most up-to-date research reports conducted by various institutions in Poland dealing with labour market and worker competencies were reviewed under specific keywords listed below. The focus is on identifying the competencies that are relevant from the perspective of the Industry 4.0 from the point of view of employees and employers. The methods used were literature research of well know databases such as google scholar McKinsay.com, Deloitte.com, ResearchGate.com including surveys and reports with Polish cases such as google, stat.gov.pl keywords under search were ‘competences’, ‘skills’, ‘profession’, ‘industry 4.0’, ‘Poland’, ‘employee’ desk research, methods of quantitative analysis and frequency of distributions of answers to questions from diagnostic surveys that are research instruments in the reports analysed.
History, Management and Development of Infrastructures in the Port of Piraeus in Greece
Authors: Biniori Eleni , Tsirintani Maria
Published: May 2024

The port of Piraeus, is an inextricable influential factor both for the Athenian community and for the Mediterranean societies since the ancient times, up until todays globalized societies thanks to its geographic location. The content of this research is conducted in line with a wide spectrum of management via retrospect research. The operation and the management of a port establishment influences all aspects of the community in which the port operates. Its spatial planning, the services it provides, its adjustment to challenges of the times, have direct impact and cultural significance, not only in the local community, but also in the broader maritime lines of communication, in which the port is integrated. In our research, we conclude that management wise, there aren’t many differences between antiquity and modern times, besides cruises and touristic expeditions in the port of Piraeus whose function for 2500 years has been an operational prototype beneficial for modern port industry.
Descriptive Research Approach to Show the Degree of Familiarity of the Tourist-Pilgrim with the Pilgrimage Route “Steps of the Apostle Paul” in the Digital Era
Authors: Dimou Vasileios , Vassiliadis Christos , Tsironis Christos , Tsagkalidou Eirini
Published: May 2024

New technologies have become an integral part of our everyday life. The possibilities they offer are now diverse, being at the same time effective and providing benefits by limiting processes regarding time, financial and administrative costs for users in the tourism sector. The scope of the present paper is the research of a specific religious tourist-pilgrim route in Greece—“Steps of the Apostle Paul”—and the degree of whether the tourists-pilgrims are familiar with that pilgrimage route. Thus, this study attempts to record the perceptions of Greek tourists regarding the religious product of the now established tour. This research approach emphasizes the degree of familiarity of tourists regarding the use of new digital media, while ultimately aiming to draw useful conclusions for administrative implementation and use. For this reason, an important point of reference of this research is the examination of the degree of contribution of variable new, user-friendly and smart digital applications to the creation of positive and unique user experience with emphasis on tourists of religious attractions in general.
Capturing Destination’s Cognitive and Affective Image on Social Media. The Case of Pafos, Cyprus
Authors: Vlassi Eirini , Deirmentzoglou Georgios A. , Irakleidi Evangelia
Published: May 2024

The democratization of travel and tourism has led to increased competition among tourist destinations, bringing the importance of destination image to the forefront. At the same time, the expansion of social media made it possible for visitors and stakeholders to collaborate on the creation of the destination image. Thus, both cognitive and affective destination image can be observed in social media and can be found in posts that users upload either in groups dedicated to a specific destination or in posts that use the name of the destination as a hashtag. This study adopts a mixed method approach in order to reveal features of the cognitive and affective perceived destination image and compare them with the projected image. The city of Pafos was chosen as a case study and all the Instagram posts using the hashtags #visitPaphos and #visitPafos (7861 in total) have been collected and analyzed. At the same time, a questionnaire designed and answered by a sample of 108 respondents who are members of Facebook groups acting as forums for holidaymakers in Cyprus. This research attempts to provide practical implications for destination managers and stakeholders to prepare and build their future marketing strategies by gaining a deeper understanding of the impact shared content has on visitor perception.
Social Media Influencers’ Perceptions on Consumers’ Buying Behavior—An Exploratory Study
Authors: Karayanni Despina A. , Koutsogiannopoulou Nikolitsa
Published: May 2024

Influential marketing is gaining arousing interest in contemporary research among academics and practitioners. The vast majority of pertinent research on how influencers may affect consumer behavior is based on the followers’ perceptions, regarded as consumers. Nevertheless, attention shed on the influencers’ perceptions, regarded as the research field, is rather rarer. In this exploratory study we base upon quantitative data extracted from 65 Social-Media international influencers. Advanced statistical analysis, based on Confirmatory factor Analysis and Regression Analysis, produced findings implying that influencers’ personality, followers’ engagement and followers’ performance risk minimization may influence the followers’ buying behavior. On the whole, as our research results imply, companies partnering with influencers should recognize the need to provide them with comprehensive information and training, encompassing both the brand’s attributes and the company’s culture and values. This approach fosters a unified promotion strategy, greater customer engagement, and improved company-influencer alignment in communication strategies and goals, leading to enhanced products sales.
Human Resources Literature After Covid-19: A Human Versus AI Analysis
Authors: Avelar Sónia , Tiago Flávio , Couto João Pedro , Borges-Tiago Teresa
Published: May 2024

In the post-Covid-19 era, identifying emerging trends in human resources management has become crucial for organizations seeking to adapt and thrive in the ever-changing landscape. Recognizing these trends enhances employee engagement, talent acquisition, and overall organizational effectiveness. One approach to unveil these trends is bibliometric analysis, which helps researchers identify influential topics and themes within the field by analyzing publication patterns, citation networks, and keyword co-occurrence. By evaluating bibliometric indicators such as citation counts and h-index, researchers can identify influential authors, institutions, and publications, fostering collaborations and knowledge-sharing opportunities. Additionally, this analysis reveals underexplored areas in literature, guiding the development of research agendas and addressing important unanswered questions in human resources. With the emergence of Artificial Intelligence (AI) tools such as Elicit, Iris, and Litmap, new possibilities arise to perform bibliometric analysis. Comparing the gains from AI-driven methods to traditional approaches, this research paper aims to understand their relative benefits in the context of human resource management after Covid-19. Although AI offers a wider range of data sources and more comprehensive insights, traditional methods still hold value, particularly when context-specific knowledge is vital. The choice between AI and traditional methods depends on research objectives, data availability, and the resources and expertise available to researchers. Ultimately, adopting emerging trends in human resources through effective bibliometric analysis can give organizations a competitive advantage, ensuring their ability to proactively adapt to the dynamic needs and expectations of their employees and achieve sustained success.
Exploring the Hospitality of Mount Athos’ Monks: Insights from Visitors Impressions
Authors: Kyprianou Constantinos , Vassiliadis Christos
Published: May 2024

Hospitality has played a significant role in Orthodox monasticism, driven by selfless love for fellow human beings. This article explores the impressions of visitors to Mount Athos, regarding the hospitality provided to them by the Mount Athos’ monks. The subject of hospitality for the monks is quite important because it is the beginning of love for fellow human beings. The purpose of the article is to examine the reception and hospitality of the visitors of Mount Athos by the monks and the recording of their impressions of this hospitality. It focuses on the example of the monastic community of the Athos peninsula and how the monks receive and welcome visitors. General impressions of the visitors throughout their access and stay on Mount Athos are also examined. The behavior of the monks towards the visitors is characterized as cordial and exemplary. The research focused on visitors, recording their experiences from their stay on Mount Athos and the stages of hospitality provided to them. Questionnaires to visitors after their stay on Mount Athos were used as means of collecting the research. The survey results demonstrate that the visitors’ impressions are described as special and unique. The majority of visitors were completely satisfied with the care they received in terms of accommodation, material and spiritual food. Could the hospitality of the monks of Mount Athos work as an example of hospitality for tourism? The way in which the monks of Mount Athos approach the visitor is special and unique. The use of the hospitality philosophy of the monks could enrich the hospitality of visitors in the tourism industry bringing significant results. This study contributes to the literature by enriching the understanding of hospitality practices within monastic communities.
The Changing Consumer Landscape in the Wake of COVID-19 in Greece: Trends, Insights and Implications
Authors: Theodoridis Prokopis K.
Published: May 2024

This study investigates the impact of the COVID-19 pandemic on consumer behaviour in Greece, particularly focusing on changes in purchasing habits, affordability, and lifestyle. Through the analysis of 1603 digital questionnaires, the study identifies three distinct consumer clusters: Cautious High Flyers, Top Performers, and Cautious Low Performers, based on their pandemic era behaviour and preferences. The research reveals that the pandemic significantly altered shopping habits, with approximately 80% of respondents reporting changes. These changes included increased purchasing quantities and a heightened focus on sales promotions. Notably, online shopping surged during the pandemic, with implications for businesses to adapt and meet this growing demand. Understanding these shifts and consumer clusters provides valuable insights for businesses to tailor their strategies effectively.
Tourism Agents in Greece Recovering from COVID-19
Authors: Fragkoudis Alexandros , Vrana Vasiliki , Karavasilis George , Kehris Evangelos
Published: May 2024

The COVID-19 pandemic profoundly affected the tourism sector which heavily relies on human interaction and movement. As travel resumes, travel companies have a chance to revamp and prepare for the future. The industry is experiencing a significant shift in consumer behavior and business practices, leading to new tourism trends. This study aims to examine the effects of the pandemic on tourism agents, their resilience and to explore emerging trends in the industry. Conducted through a quantitative research method, the study surveyed 132 travel agencies across Greece. Finings revealed that during the lockdown, respondents focused on planning for the post-COVID-19 era and invested in staff training and skill development to enhance business operations. Findings highlight the diverse perspectives of the agents, regarding their resilience, demonstrating a skepticism for the future of the business. The pandemic has resulted to changes in tourist behavior, such as a shift towards shorter trips and boutique tours, as well as an increased emphasis on hygiene measures. Understanding these shifts in behavior is crucial for the recovery of tourism businesses, as it enables them to tailor their services to meet client expectations and strive for long-term sustainability.
Which Brand’s Posts Drive Customer Engagement? Evidence from Greek Wine Brands’ Posts
Authors: Vlachvei Aspasia , Notta Ourania
Published: May 2024

The aim of this work is first to contribute to a deeper understanding on which posts drive consumer engagement through literature review and second to investigate how various firm-determined characteristics of brand’s social media posts affect different types of customer engagement on brands’ posts, in case of Greek wineries’ Facebook brand pages. According to the results informative, rewarding, and relational content promote customer engagement on brand’s Posts. Relational content affects customer engagement through the increase of reactions and comments while rewarding content increase the shares and the comments. The results also support that network size matters and that working hours are better time to post. Finally, richness of the brand post increase engagement only in the case of reactions.
Motives and Perceptions of Greek Voters in National Elections of 2023
Authors: Sophocleous Harry , Anastasiadou Sofia , Masouras Andreas , Apostolopoulos Sotiris
Published: May 2024

The current paper is founded on the statement that voting behaviour is an exercise of consumer behaviour and is modelled by factors such as the motives, the perceptions and the reason of voting. In this sense, the central research aim of the paper is to clarify and analyse the impact that the aforementioned factors might have upon voters’ behaviour. Accordingly, the paper provides an appropriate conceptual background and involved collecting of primary data, and thus, it employs a quantitative methodology. More specifically, the research involved a survey through the use of a structured questionnaire with the practice of a 5-point Linkert Scale, which permits assessing the impact of electoral behaviour. Furthermore, the survey was carried out electronically, with the procedure of a convenient sample, with 605 Greek citizens (men and women) with voting right. The responses took place between the 27th of June and the 11th of July 2023, just after the two subsequent Greek electoral contests. The specific circumstance was selected in order to achieve the deliberation of a clear electoral output and therefore, to attain the monitoring of a transparent impact of the electoral behaviour. Apart from the positive timing, an additional reason for which the Greek case has been chosen, is the fact that there is a constructive ground for the specific field. Therefore, the specific research is likely to contribute to the existing research gap. The research demonstrates and measures the electorate impact of the different aspects of voting behaviour. The paper reveals and measures the electoral impact of the motives, the perceptions and the reason of voting. The political arena and those involved may benefit from these results.