bluuebunny/crossref_metadata_2025 huggingface dataset:
School climate’s effect on hospitality department students’ aesthetic experience, professional identity and innovative behavior
Authors: Lin Weixin , Chang Yuan-Cheng
Published: December 2022

This study investigated the effects of school climate and students’ aesthetic experience on their professional identity and innovative behavior. A survey was conducted with 385 students from hospitality-related departments of colleges and universities in Hainan, China, and the data were analyzed using a hierarchical linear model (HLM). Using the criteria constituting the students’ aesthetic experience scale proposed by Chang, it was found that teacher support can improve students’ professional identity; school climate and students’ understanding of beauty and full experience contribute to the development of students’ innovative behavior; students’ understanding of beauty and full experience have mediating effects between teacher support and professional cognition; students’ understanding of beauty and full experience have mediating effects between student support and innovative behavior; student support positively moderates the relationships between full experience with professional cognition and students’ appraisal of the hospitality industry; and teacher support positively moderates the relationship between students’ full experience and professional emotion. Therefore, teacher support under school climate and students’ understanding of beauty and full experience under aesthetic experience were the most important factors in enhancing hospitality department students’ professional identity and innovative behavior.
Analyzing when parental warmth but without parental strictness leads to more adolescent empathy and self-concept: Evidence from Spanish homes
Authors: Fuentes Maria C. , Garcia Oscar F. , Alcaide Marta , Garcia-Ros Rafael , Garcia Fernando
Published: December 2022

Introduction

Classical research mainly conducted with European-American families has identified the combination of warmth and strictness (authoritative style) as the parenting always associated with the highest scores on developmental outcomes. Additionally, despite the benefits of empathy for prosocial behaviors and protection against antisocial behaviors, most research has considered the contribution of specific practices (e.g., reasoning or power assertion), but not so much the parenting styles. Similarly, family studies tend to study the relationship between parenting and global self-perceptions (self-esteem), but not so much those of each dimension (self-concept).

Methods

In the present study, 600 Spanish adolescents from 12 to 17 years old (M = 15.25, SD = 2.01) were classified within one of the four household typologies (i.e., authoritative, indulgent, authoritarian, or neglectful). Adolescent developmental outcomes were cognitive empathy (adopting perspectives and emotional understanding), emotional empathy (empathic stress and empathic happiness), and self-concept (academic, social, emotional, family and physical).

Results

The results showed that the indulgent parenting (warmth but not strictness) was related to equal or even better empathy and self-concept than the authoritative style (warmth and strictness), whereas non-warm parenting (authoritarian and neglectful) was consistently associated with poor results.

Discussion

Overall, the present findings seriously question that parental strictness combined with parental warmth (authoritative style) is always the parenting style related to the greatest outcomes. By contrast, it seems that reasoning, warmth and involvement, without strictness (indulgent parenting) help adolescents to achieve a good orientation toward others in terms of cognitive and affective empathy and a good self-evaluation in terms of self-concept.
Where there is a will, there’s a way: Job search clarity, reemployment crafting and reemployment quality
Authors: Liu Xuan , Wu Zhenhao , Zeng Kailun
Published: December 2022

Job hunting is regarded as a self-regulatory process. However, few studies have examined the mechanism underlying the job search goal-performance relationship from the perspective of the self-regulatory behavior of reemployment crafting (RC). Therefore, the purpose of this study was to examine the mediating role of RC in the relationship between job search clarity (JSC) and reemployment quality (RQ) and the moderating role of the reemployment context. A three-wave study was conducted among 295 rural migrant workers who had experienced unemployment to successful reemployment in China. Model 4 and Model 9 from SPSS macro PROCESS were used to test the moderated mediation model. The findings indicated that (1) JSC was positively correlated with RQ; (2) seeking resources (SR) and seeking challenging demands (SCD) fully mediated the relationship between JSC and RQ; (3) supportive environment (SEn) and challenging environment (CEn), independently, have moderating effect on the relationship between JSC and SR, as well as the relationship between JSC and SCD; and (4) the mediating effect of SR as well as SCD was significant and greater when SEn and CEn were both at high levels. This study contributes to goal-setting theory and highlights the important roles of RC and the reemployment context.
Care burden on family caregivers of patients with dementia and affecting factors in China: A systematic review
Authors: Wang Lan , Zhou Yang , Fang Xiaofeng , Qu Guiyu
Published: December 2022

Background

Dementia is a chronic and progressive illness characterized by severe impairment and high dependencies. Under the influence of Chinese traditional culture, 80% of patients with dementia are watched over at home by family caregivers as primary caregivers. However, long-term care brings formidable burdens to them and reduces the quality of their life. It is necessary to find out the influencing factors of caregivers’ burden.

Methods

A scoping search was conducted on eight electronic databases from 1 January 2010 to 14 June 2022: PubMed, Embase, the Cochrane Library, Web of Science, China National Knowledge Infrastructure, China VIP Database, China Biomedical Literature Database, and Wanfang Data Knowledge Service Platform. Research articles included in this review discussed the factors affecting Chinese dementia family caregivers’ care burden or stress, and the level of care burden was evaluated by a standardized care burden scale.

Results

A total of 1,888 related articles were found and 23 cross-sectional studies were eventually included. After quality assessment, 12 were of good quality and 11 were of fair quality. A total of 32 factors were identified that were associated with caregiver burden, and the results were grouped into three categories: patient, caregiver, and society. The severity of disease, poor self-care ability, neuropsychiatric symptoms, care time, number of helpers, poor health status, economic stress, poor psychological status, social support, and age were reported in many previous studies.

Conclusion

In this review, the factors that affect the caregiver burden for people with dementia were clarified. By identifying these factors, hospitals, decision-makers, and communities can carry out special projects for these populations, provide appropriate assistance, or design corresponding intervention measures to reduce the caregiver burden and improve the quality of care for patients with dementia.

Systematic review registration

[https://www.crd.york.ac.uk/PROSPERO/], identifier [CRD42022347816].
Moderators of ayahuasca’s biological antidepressant action
Authors: Sousa Geovan Menezes de , de Oliveira Tavares Vagner Deuel , de Menezes Galvão Ana Cecília , de Almeida Raíssa Nóbrega , Palhano-Fontes Fernanda , Lobão-Soares Bruno , de Morais Freire Fúlvio Aurélio , Nunes Emerson Arcoverde , Maia-de-Oliveira João Paulo , Perkins Daniel , Sarris Jerome , de Araujo Dráulio Barros , Galvão-Coelho Nicole Leite
Published: December 2022

Introduction

The understanding of biological responses to psychedelics with antidepressant potential is imperative. Here we report how a set of acute parameters, namely emotional (depressive symptoms), cognitive (psychedelic experience), and physiological (salivary cortisol), recorded during an ayahuasca dosing session, modulated serum brain-derived neurotrophic factor (BDNF), serum cortisol (SC), serum interleukin 6 (IL-6), plasma C-reactive protein (CRP), and salivary cortisol awakening response (CAR).

Methods

Results were analyzed 2 days after the psychedelic intervention (ayahuasca) versus placebo in both patients with treatment-resistant depression and healthy volunteers. These measures were assessed as part of a randomized double-blinded, placebo-controlled trial (n = 72).

Results

Results revealed that larger reductions of depressive symptoms during the dosing session significantly moderated higher levels of SC in patients. Whereas lesser changes in salivary cortisol levels during the ayahuasca intervention were related to higher BDNF levels in patients with a larger clinical response in the reduction in depressive symptoms. No moderator was found for patient’s CAR, IL-6, and CRP responses to ayahuasca and for all biomarker responses to ayahuasca in healthy controls and in the placebo group.

Discussion

In summary, some specific emotional and physiological parameters during experimental ayahuasca session were revealed as critical moderators of the improvement of major depression biomarkers, mainly BDNF and SC two days after ayahuasca intake. These findings contribute to paving the way for future studies investigating the biological antidepressant response to psychedelic therapy.
Effects and safety of auricular acupressure on depression and anxiety in isolated COVID-19 patients: A single-blind randomized controlled trial
Authors: Cai Wa , Zhang Kun , Wang Guan-Tao , Li Jin , Wei Xiang-Yu , Ma Wen , Li Ya-Juan , Wang Bo , Shen Wei-Dong
Published: December 2022

Objective

Psychological distress such as depression and anxiety resulted from coronavirus disease 2019 (COVID-19) have attracted increasing attention. The aim of this randomized controlled trial is to evaluate the effects and safety of auricular acupressure on depression and anxiety in isolated COVID-19 patients.

Methods

68 participants diagnosed with COVID-19 pneumonia (18–80 years old, SDS ≥ 50, SAS ≥ 45) were recruited and randomly allocated to the auricular acupressure group and the sham auricular acupressure group by a computer-generated random number sequence from 9th June to 30th June 2022. The group allocation was only blinded to the participants. Those in the auricular acupressure group were attached magnetic beads against 4 auricular points Shenmen, Subcortex, Liver and Endocrine, while sham group used four irrelevant auricular points. Outcomes were measured by Zung Self-Rating Depression Scale (SDS) and Zung Self-Rating Depression Scale (SAS) before and after treatment in both groups through electronic questionnaire in mobile phones.

Results

After treatment, statistically significant differences were found in scores of SAS in both groups (P < 0.001 in auricular acupressure group; P = 0.003 in sham group), and SDS scores reduced significantly in the auricular acupressure group (P = 0.002). Significant reduced SAS and SDS scores were achieved in the auricular acupressure group than that in the sham group (F = 4.008, P = 0.049, MD −7.70 95% CI: −9.00, −6.40, SMD −2.79 95% CI: −3.47, −2.11 in SDS; F = 10.186, P = 0.002, MD −14.00 95% CI: −15.47, −12.53, SMD −4.46 95% CI: −5.37, −3.56 in SAS). No adverse events were found in either group during the whole study.

Conclusion

Auricular acupressure is an effective and safe treatment for alleviating symptoms of depressive and anxiety in patients with COVID-19.

Clinical trial registration

https://www.chictr.org.cn//, identifier ChiCTR2200061351.
The association between sedentary behavioral characteristics and poor vision among Chinese children and adolescents
Authors: Li Lin , Liao Jinjin , Fu Hui , Zong Boyi
Published: December 2022

Introduction

To understand the features of sedentary behavior of Chinese children and adolescents and its relationship with poor visual acuity, a self-administered “Questionnaire on Sedentary Behavior of Children and Adolescents” was used to survey 4,203 students in grades 4–12 in six administrative regions of China.

Results

(1) The average time spent in sedentary behaviors (SB) of Chinese children and adolescents was about 8.1 h per day, of which the academic sedentary time was the longest, accounting for 79.2% of total sedentary time. The total time spent on SB and the time spent on studying SB were more in the upper grades and less in screen SB and cultural leisure SB, respectively. There were significant sex differences in total SB time (p < 0.05) and weekend sedentary behaviors time (SB-WD) (p < 0.01) among Chinese children and adolescents, with girls being more likely to be higher than boys. There were also significant differences in sedentary time across different regions (p < 0.05), and the longest total sedentary time in East China. (2) Reduction parents' sedentary time and limitation of sedentary behaviors and the use of electronics among children and adolescents can effectively reduce sedentary time among Chinese children and adolescents. (3) Sedentary time was significantly higher in children and adolescents with poor vision than in those with normal vision (p < 0.01), and study SB and screen SB were important independent factors affecting vision. (4) Timing of breaks in SB can play a positive role in promoting vision health.

Conclusion

There were significant grade, sex, and regional differences in the SB of Chinese children and adolescents, and sedentary time was strongly related to the prevalence of poor vision detection rate.
Imagining the city in lockdown: Place in the COVID-19 self-recordings of the Lothian Diary Project
Authors: Cowie Claire , Hall-Lew Lauren , Elliott Zuzana , Klingler Anita , Markl Nina , McNulty Stephen Joseph
Published: December 2022

The COVID-19 pandemic brought about a profound change to the organization of space and time in our daily lives. In this paper we analyze the self-recorded audio/video diaries made by residents of Edinburgh and the Lothian counties during the first national lockdown. We identify three ways in which diarists describe a shift in place-time, or “chronotope”, in lockdown. We argue that the act of making a diary for an audience of the future prompts diarists to contrast different chronotopes, and each of these orientations illuminates the differential impact of the COVID-19 lockdowns across the community.
Improving HIV pre-exposure prophylaxis persistence among adolescent girls and young women: Insights from a mixed-methods evaluation of community, hybrid, and facility service delivery models in Namibia
Authors: Barnabee Gena , O’Bryan Gillian , Ndeikemona Lylie , Billah Idel , Silas Lukas , Morgan Karie L. , Shulock Katherine , Mawire Susan , MacLachlan Ellen , Nghipangelwa Josua , Muremi Elizabeth , Ensminger Alison , Forster Norbert , O’Malley Gabrielle
Published: December 2022

Introduction

Despite the potential for community-based approaches to increase access to pre-exposure prophylaxis (PrEP) for adolescent girls and young women (AGYW), there is limited evidence of whether and how they improve PrEP persistence. We compared PrEP persistence among AGYW receiving services through community and hybrid models in Namibia to facility-based services. We subsequently identify potential mechanisms to explain how and why community and hybrid models achieved (or not) improved persistence to inform further service delivery innovation.

Methods

Data were collected from PrEP service delivery to AGYW over two-years in Namibia's Khomas Region. We used Kaplan-Meier analysis to estimate survival curves for PrEP persistence beyond three-months after initiation and report the cumulative probability of persistence at one- and three-months. Persistence was defined as any PrEP use within three months after initiation followed by a PrEP refill or previously prescribed supply of at least 30 days at the three-month visit. Interviews were conducted with 28 AGYW and 19 providers and analyzed using a deductive-inductive thematic approach.

Results

From October 2017 through September 2019, 372 (18.7%) AGYW received services through a facility model, 302 (15.1%) through a community model, and 1,320 (66.2%) through a hybrid model. PrEP persistence at one- and three-months was 41.2% and 34.9% in the community model and 6.2% and 4.8% in the hybrid model compared to 36.8% and 26.7% in the facility model. Within the community and hybrid models, we identified three potential mechanisms related to PrEP persistence. Individualized service delivery offered convenience and simplicity which enabled AGYW to overcome barriers to obtaining refills but did not work as well for highly mobile AGYW. Consistent interactions and shared experiences fostered social connectedness with providers and with peers, building social networks and support systems for PrEP use. PrEP and HIV-related stigma, however, was widely experienced outside of these networks. Community-to-facility referral for PrEP refill triggered apprehension towards unfamiliar PrEP services and providers in AGYW, which discouraged persistence.

Conclusion

Service delivery approaches that offer convenience and simplicity and foster social connectedness may reduce access barriers and increase social support enabling AGYW to self-manage their PrEP use and achieve improved PrEP persistence.
Incident portal vein thrombosis in liver transplant recipients in New Zealand: Predictors of risk and validation of portal vein thrombosis risk index calculator
Authors: Garg Paras , Harrison Barry , Gane Edward J.
Published: December 2022

The risk of spontaneous portal vein thrombosis (PVT) is increased in patients on the waiting list for liver transplantation and increases perioperative risks. A predictive PVT risk-index (PVT-RI) calculator has been proposed to determine the risk of incident PVT. We performed a retrospective analysis on adult liver transplant recipients at the NZ Liver Transplant Unit between January 1998 and February 2020. Variables reviewed included age at listing and transplantation, wait time from listing to transplant, indication for listing, gender, ethnicity, etiology of liver disease, listing MELD score, hepatocellular carcinoma (HCC), moderate-to-severe ascites, hepatic encephalopathy (>grade 2), transjugular intrahepatic portosystemic shunt (TIPSS), spontaneous bacterial peritonitis (SBP), and diabetes. Incident PVT was determined by imaging of patients while on the waiting list and assessment at transplantation. A total of 553 out of 706 patients met the inclusion criteria. Of those 553, 18 (3.3%) patients had incident PVT. The PVT-RI calculator was not validated in our cohort with only one of those 18 (6%) patients having a score of >4.6 (high risk cut-off score). Longer waiting time for transplant and listing for liver failure rather than HCC were independent predictors of the risk of incident PVT. There was no statistically significant difference in the incidence of PVT in viral vs. non-viral and cholestatic vs. non-cholestatic etiology of chronic liver disease. Patients with longer waiting times on the transplant waiting list should be monitored regularly for PVT.
Explaining migration intention from selected psycho-social variables in South Wollo, Ethiopia
Authors: Assfaw Abebe Kibret , Minaye Abebaw
Published: December 2022

Migration has become one of the challenging global issues of the twenty-first century. Therefore, analyzing the intention to migrate is essential to develop clear strategies to manage actual migration. This research aimed to investigate emigration intention predictors (namely place attachment, attitude, national pride, subjective social norm, and perceived behavioral control) and the interaction effect of social networks between those predictors and migration intention. A sample of 701 high school students participated in the research. Exploratory Factor Analysis and Confirmatory Factor Analysis were employed to explore the dimension and loading of items respectively. To test the moderation effect of social networks on migration intention and the predictor variables, structural equation modeling was employed using Amos version 27. The findings indicated that Attitude, National pride, subjective social norm, and perceived behavioral control predict youths' emigration intention. The result also revealed that social network strengthens the negative correlation between place attachment and intention to migrate only if the individuals have a high social network. The social network also moderates the relationship between attitude and emigration intention.
Development of novel functional foods using Himalayan honey having enhanced nutraceutical and nutritional potential
Authors: Ganie Tariq Ahmad , Wani Sajad Ahmad , Rather Sajad Ahmad , Masoodi Farooq Ahmad , Siddiqui Shahida Anusha , Ibrahim Salam A.
Published: December 2022

This study was carried out to conduct the geographical discrimination of various types of honey, and their utilization in development of novel functional foods where in honey could be substituted in place of white sugar. Honey based apple spread and marmalade products were developed and evaluated for quality analysis. The results showed higher water activity (aw) and moisture content in Plectranthus rugosus (PR) honey based apple spread and marmalade while, TSS was highest (p < 0.05) in Multifloral (MF) honey based apple spread and marmalade. Hydroxymethylfurfural was found to be in the ranged of 6.77–7.05 (mg/kg) for honey based apple spread products and 3.09–3.46 (mg/kg) for honey based apple marmalade products. The lightness (L*) value was significantly highest in MF honey based apple spread and marmalades (p < 0.05). Redness (a*) and yellowness (b*) values were significantly highest in PR honey based apple spreads and marmalades and lowest in Robinia pseudo acacia (RSA) honey based apple spread and marmalades. In general, all MF honey based apple spreads and marmalades has the highest score for overall acceptability in comparison to RSA and PR honey based apple spreads. The values of gel strength (Fe), rupture force (FR), energy of penetration (E) and adhesiveness (A) in the given spread products were in the range of 1.50–1.54 N, 1.70–1.73 N, 17.00–17.05 Ns and −1.11–−1.08 Ns, respectively. The values of gel strength (Fe), rupture force (FR), energy of penetration (E) and adhesiveness (A) in the investigated marmalade products were in the range of 1.65–1.69 N, 2.08–2.13 N, 16.05–16.10 Ns and −1.14–−1.10 Ns, respectively.
The morbidity and the spectrum of applied drugs in shelter cats in the Czech Republic
Authors: Vojtkovská Veronika , Kaluža Michal , Voslářová Eva , Večerek Vladimír , Tomečková Lenka
Published: December 2022

Maintaining appropriate living conditions and good health of the animals should be one of the main priorities of cat shelters. The aim of this study was to assess the morbidity of shelter cats on the basis of analysis of the shelter health records in terms of the nature and quantity of medicaments and other supportive products administered in two no-kill shelters in the Czech Republic. The subject of the study were the health records of 1,884 cats, which were admitted to the selected shelters from 1.1.2013 to 31.12.2021 and their stay in the shelter was terminated in the monitored period. More than half of all cats whose records were analyzed had at least one health record made during their stay in the shelter. The overall length of stay of cats in the shelter (regardless of the outcome) in which one or more health records were found was significantly longer compared to the length of stay of cats without any health records. The highest number of health records was found in kittens <6 months old. Antibiotics, antiparasitics, and complementary/protective substances were the most used among all administered drugs. Broad-spectrum antibiotics have been administered to cats most often. In terms of classification of antibiotics according to the active substance, the most used antibiotics were penicillins, tetracyclines, and fluoroquinolones. Antibiotics were mostly used to treat diseases related to the upper and lower respiratory tract and their symptoms and gastrointestinal problems. The findings of the study contribute to understanding health problems and approaches to treating the shelter cats.
Sense of Coherence in Healthcare Workers During the COVID-19 Pandemic in Ecuador: Association With Work Engagement, Work Environment and Psychological Distress Factors
Authors: Gómez-Salgado Juan , Arias-Ulloa Cristian Arturo , Ortega-Moreno Mónica , García-Iglesias Juan Jesús , Escobar-Segovia Kenny , Ruiz-Frutos Carlos
Published: December 2022

Objectives: The aim of this study was to test the association between the sense of coherence, work engagement, and psychological distress in healthcare workers in Ecuador during the first phase of the COVID-19 pandemic.

Methods: A cross-sectional observational study in a sample of 803 healthcare professionals from all regions of Ecuador between 2 April and 17 May 2020. A self-administered questionnaire was used, which contained sociodemographic and work environment variables, the Utrecht Work Engagement Scale (UWES-9), the General Health Questionnaire (GHQ-12), and Sense of Coherence Scale (SOC-13).

Results: The mean value of sense of coherence was M = 65.04; SD = 12.74; for work engagement, it was M = 39.36; SD = 10.53; and for psychological distress, M = 4.58; SD = 3.44. There is a positive correlation (p < 0.01) between the sense of coherence and work engagement, and a negative correlation with psychological distress.

Conclusion: During the pandemic in Ecuador, healthcare professionals have suffered a major deterioration of their mental health. Sense of coherence has been associated with work engagement and psychological distress. They have perceived a worsening of the quality of care and working conditions compared to those existing before COVID-19.
Evolutionary Game Analysis of Power Generation Groups Considering Energy Price Fluctuation
Authors: Jiang Yu , Qian Changyu , Yu Jie , Zhou Luyao , Wang Zheng , Chen Qian , Wang Yang , Ma Xiaole
Published: December 2022

As the double carbon target continues to be promoted and the installed capacity of gas-fired power generation gradually expands, whether and when gas-fired power generation should enter the market is a major concern for the industry. This paper analyzes the change in power generation cost and the characteristics of bidding behavior of the power generation group with the fluctuation of primary energy price to study the timing and role of gas power generation entering the market. The evolutionary game model for gas- and coal-fired power generation groups based on the influence of multiple factors takes into account factors such as generation costs, the number of power generation groups, generation capacity, supply, and demand. The equilibrium states of the power generation groups under various scenarios and the conditions that need to be satisfied for the equilibrium states are analyzed, and a method for determining the stable equilibrium point of the evolving market game is proposed. Examples use the actual price fluctuations of coal and natural gas as input data to validate the rationality of the paper’s model and the stable equilibrium approach.
Special Issue on Algorithms and Data-Structures for Compressed Computation
Authors: Policriti Alberto , Prezza Nicola
Published: December 2022

As the production of massive data has outpaced Moore’s law in many scientific areas, the very notion of algorithms is transforming [...]
Modular Stability Analysis of a Nonlinear Stochastic Fractional Volterra IDE
Authors: Ahadi Azam , Eidinejad Zahra , Saadati Reza , O’Regan Donal
Published: December 2022

We define a new control function to approximate a stochastic fractional Volterra IDE using the concept of modular-stability.
Design of a Non-Back-Drivable Screw Jack Mechanism for the Hitch Lifting Arms of Electric-Powered Tractors
Authors: De Simone Marco Claudio , Veneziano Salvio , Guida Domenico
Published: December 2022

The agricultural sector is constantly evolving. The rise in the world’s population generates an increasingly growing demand for food, resulting in the need for the agroindustry to meet this demand. Tractors are the vehicles that have made a real difference in agriculture’s development throughout history, lowering costs in soil tillage and facilitating activities and operations for workers. This study aims to successfully design and build an autonomous, electric agricultural tractor that can autonomously perform recurring tasks in open-field and greenhouse applications. This project is fully part of the new industrial and agronomic revolution, known as Factory 4.0 and Agriculture 4.0. The predetermined functional requirements for the vehicle are its lightweight, accessible price, the easy availability of its spare parts, and its simple, ordinary maintenance. In this first study, the preliminary phases of sizing and conceptual design of the rover are reported before subsequently proceeding to the dynamical analysis. To optimize the design of the various versions of the automated vehicle, it is decided that a standard chassis would be built based on a robot operating inside a greenhouse on soft and flat terrains. The SimScape multi-body environment is used to model the kinematics of the non-back-drivable screw jack mechanism for the hitch-lifting arms. The control unit for the force exerted is designed and analyzed by means of an inverse dynamics simulation to evaluate the force and electric power consumed by the actuators. The results obtained from the analysis are essential for the final design of the autonomous electric tractor.
Energy-Harvesting Characteristics of a Dual-Mode Magnetic Suspension for Vehicles: Analysis and Experimental Verification
Authors: Jiang Weikang , Song Yuanyuan , Xu Yongming , Zhou Ran , Sun Feng , Zhang Xiaoyou
Published: December 2022

The advantages of the proposed dual-mode magnetic suspension are it having a high level of safety and a compact structure compared with the previous studies. However, the structure parameters can affect the energy harvesting of the suspension system. Therefore, this paper aims to analyze the energy-harvesting characteristics of the proposed dual-mode magnetic suspension. Firstly, the structure and working principle of the proposed suspension are introduced. Then, the influences of the various parameters for the actuator on the energy regeneration characteristics are analyzed by the finite element method, such as the magnetic ring, the fixed plug thickness, the heat dissipation, and the air gap, and the actuator parameters are defined by the orthogonal analysis method. Furthermore, the numerical results of the energy harvesting are calculated. Finally, the vibration experimental setup is manufactured, and the simulation analysis is verified by the experiment. The results demonstrate that the excitation amplitude is 3.1 mm, the frequency is 18 Hz, and the maximum induced EMF is 8.8 V. Additionally, compared with passive suspension, the energy harvesting of the proposed suspension has been verified in the laboratory, which lays the foundation for the design and analysis of the dual-mode magnetic suspension in a real vehicle.
Effect of Pulp Pigmentation Intensity on Consumer Acceptance of New Blood Mandarins: A Cross-Cultural Study in Spain and Italy
Authors: Giménez-Sanchis Adrián , Pons-Gómez Ana , Farina Vittorio , Besada Cristina
Published: December 2022

One of the current objectives of different citrus breeding programmes is obtaining new pigmented mandarins. This study investigates to what extent consumer preferences, expectations and purchase intention are affected by the appearance of new mandarins, specifically pulp pigmentation intensity. Four hundred consumers from both Italy and Spain (800 in all) participated in the study. In each country, half were informed about the healthy properties of the anthocyanins responsible for red pulp colouration, while the other half were not. Italians more readily accepted new mandarin varieties than Spaniards, which was linked to them being more familiar with blood oranges. In Italy, both slight- and medium-pigmented mandarins were well-accepted. Spanish consumers preferred the slight-pigmented variety. The most intense pigmented varieties were not well-accepted in either country. Health-related information positively affected Spaniards’ consumer response but did not modify that of Italians. A halo effect was detected in Spain, where health-related information positively affected mandarin appearance liking and its expected taste liking. Consumer perception that new varieties were unnatural was identified as a consumption barrier, mainly in Spain. Blood orange familiarity and health claims are revealed as conditioning factors for consumer response to pigmented mandarins. Interventions should be made to inform consumers that these varieties are obtained by conventional breeding and not by transgenic technology. Future studies should evaluate consumer response to other sensory characteristics, such as odour, taste and texture.
Rapid and Accurate Prediction of Soil Texture Using an Image-Based Deep Learning Autoencoder Convolutional Neural Network Random Forest (DLAC-CNN-RF) Algorithm
Authors: Zhao Zhuan , Feng Wenkang , Xiao Jinrui , Liu Xiaochu , Pan Shusheng , Liang Zhongwei
Published: December 2022

Soil determines the degree of water infiltration, crop nutrient absorption, and germination, which in turn affects crop yield and quality. For the efficient planting of agricultural products, the accurate identification of soil texture is necessary. This study proposed a flexible smartphone-based machine vision system using a deep learning autoencoder convolutional neural network random forest (DLAC-CNN-RF) model for soil texture identification. Different image features (color, particle, and texture) were extracted and randomly combined to predict sand, clay, and silt content via RF and DLAC-CNN-RF algorithms. The results show that the proposed DLAC-CNN-RF model has good performance. When the full features were extracted, a very high prediction accuracy for sand (R2 = 0.99), clay (R2 = 0.98), and silt (R2 = 0.98) was realized, which was higher than those frequently obtained by the KNN and VGG16-RF models. The possible mechanism was further discussed. Finally, a graphical user interface was designed and used to accurately predict soil types. This investigation showed that the proposed DLAC-CNN-RF model could be a promising solution to costly and time-consuming laboratory methods.
SSR Genotypes of the Puccinia triticina in 15 Provinces of China Indicate Regional Migration in One Season from East to West and South to North
Authors: Xu Zhe , Li Hongfu , Xia Xiaoshuang , Liu Bo , Gao Li , Chen Wanquan , Liu Taiguo
Published: December 2022

Leaf rust of wheat caused by Puccinia triticina (Pt) is one of the most common fungal diseases in the southwest and northwest of China, the middle and lower reaches of the Yangtze River, and the southern part of the Huang-Huai-Hai river basin. Using 13 simple sequence repeat (SSR) markers, we systematically revealed the genotypic diversities, population differentiation and reproduction of Pt isolates in 15 wheat-producing areas in China. A total of 622 isolates were divided into 3 predominant populations, including the eastern Pt populations, consisting of Pt samples from 8 eastern provinces of Beijing, Hebei, Shanxi, Shaanxi, Anhui, Shandong, Henan, and Heilongjiang; the 4 western Pt populations from Gansu, Qinghai, Sichuan, and Inner Mongolia provinces; and the bridge Pt populations including Jiangsu, Hubei, and Yunnan, which communicated the other 2 populations as a “bridge”. The pathogen transmission of eastern Pt populations was more frequent than western Pt populations. The linkage disequilibrium test indicated that the whole Pt population was in a state of linkage disequilibrium. However, populations of Beijing, Hebei, Shaanxi, Jiangsu, Henan, and Heilongjiang provinces showed obvious linkage equilibrium, while the five provinces of Qinghai, Hubei, Anhui, Shandong, and Inner Mongolia supported clonal modes of reproduction.
Study of the Distribution Characteristics of the Airflow Field in Tree Canopies Based on the CFD Model
Authors: Xu Tao , Zhou Hao , Lv Xiaolan , Lei Xiaohui , Tao Shutian
Published: December 2022

Air-assisted sprayers are the mainstream orchard plant protection machinery in China. During the usage of sprayers, the pesticide droplets carried by strong air jets from sprayers enter into the target canopy. Therefore, the distribution of airflow field in the canopy has significant influence on the spatial movement of the droplets and the adhesion and penetration of the droplets inside the canopy. To enhance the working performance of sprayers, it is imperative to study their use in tree canopies. Based on computational fluid dynamics (CFD), the k-ε turbulence model, and the SIMPLE algorithm, a 3D simulated model of the spatial distribution of the airflow field in and around the tree canopy was established based on the porous model in this paper. The model was used to simulate and calculate the air field distribution of an air-assisted orchard sprayer under different operating parameters. The results showed that the optimal operation effect was achieved when the driving speed and the air speed of the fan outlet were 1 m/s and 20 m/s, respectively, while the air speed in the canopy was not less than 2 m/s. The 36 points measured in the canopy were compared with the simulated results through field experiments. It showed that average relative error between the measured and simulated values was 13.85%, and the overall goodness-of-fit was 0.97656. The model accurately simulated the airflow distribution in the canopy and provided a basis for optimizing the operating parameters of the air-assisted sprayers in orchards.
Multidrug-Resistant Enterobacterales in Community-Acquired Urinary Tract Infections in Djibouti, Republic of Djibouti
Authors: Mohamed Hasna Said , Houmed Aboubaker Mohamed , Dumont Yann , Didelot Marie-Noëlle , Michon Anne-Laure , Galal Lokman , Jean-Pierre Hélène , Godreuil Sylvain
Published: December 2022

The emergence and spread of multidrug resistant Enterobacterales (MDR-E) are a global public health issue. This problem also concerns urinary tract infections (UTI), which are the second most frequent infections after respiratory infections. The objective of this study was to determine MDR-E frequency and to characterize MDR-E isolates from patients with community-acquired UTIs in Djibouti, Republic of Djibouti. From 800 clinical urinary samples collected at the Mer Rouge Laboratory, Djibouti, from January to July 2019, 142 were identified as Enterobacterales (age range of the 142 patients mean age is 42 years.) Mass spectrometry analysis of these isolates identified 117 Escherichia coli, 14 Klebsiella pneumoniae, 2 Proteus mirabilis, 4 Enterobacter spp., 4 Providencia stuartii and 1 Franconibacter helveticus. Antibiotic susceptibility testing (disk diffusion method) of these 142 isolates detected 68 MDR-E (68/142 = 48%): 65 extended-spectrum bêta lactamase- (ESBL), 2 carbapenemase- (one also ESBL), and 1 cephalosporinase-producer. Multiplex PCR and sequencing showed that the 65 ESBL-producing isolates carried genes encoding CTX-M enzymes (CTX-M-15 in 97% and CTX-M-9 in 3% of isolates). Two isolates harboured a gene encoding the OXA-48-like carbapenemase, and one the gene encoding the AmpC CMY-2 cephalosporinase. Genes implicated in resistance to quinolones (qnrB, aac (6′)-Ib-cr, qnrD, oqxA and B) also were detected. Among the E. coli phylogroups, B2 was the most common phylogenetic group (21% of MDR-E isolates and 26% of non-MDR-E isolates), followed by A (14% and 12%), B1 (9% and 7%), D (3% and 3%), F (3% and 3%) and E (2% and 2%). This study highlights the high frequency of ESBL producers and the emergence of carbapenemase-producers among Enterobacterales causing community-acquired UTIs in Djibouti.
Increasing the Efficacy of Treatment of Staphylococcus aureus–Candida albicans Mixed Infections with Myrtenol
Authors: Mahmoud Ruba Y. , Trizna Elena Y. , Sulaiman Rand K. , Pavelyev Roman S. , Gilfanov Ilmir R. , Lisovskaya Svetlana A. , Ostolopovskaya Olga V. , Frolova Larisa L. , Kutchin Alexander V. , Guseva Galina B. , Antina Elena V. , Berezin Mikhail B. , Nikitina Liliya E. , Kayumov Airat R.
Published: December 2022

Infectious diseases caused by various nosocomial microorganisms affect worldwide both immunocompromised and relatively healthy persons. Bacteria and fungi have different tools to evade antimicrobials, such as hydrolysis damaging the drug, efflux systems, and the formation of biofilm that significantly complicates the treatment of the infection. Here, we show that myrtenol potentiates the antimicrobial and biofilm-preventing activity of conventional drugs against S. aureus and C. albicans mono- and dual-species cultures. In our study, the two optical isomers, (−)-myrtenol and (+)-myrtenol, have been tested as either antibacterials, antifungals, or enhancers of conventional drugs. (+)-Myrtenol demonstrated a synergistic effect with amikacin, fluconazole, and benzalkonium chloride on 64–81% of the clinical isolates of S. aureus and C. albicans, including MRSA and fluconazole-resistant fungi, while (−)-myrtenol increased the properties of amikacin and fluconazole to repress biofilm formation in half of the S. aureus and C. albicans isolates. Furthermore, myrtenol was able to potentiate benzalkonium chloride up to sixteen-fold against planktonic cells in an S. aureus–C. albicans mixed culture and repressed the adhesion of S. aureus. The mechanism of both (−)-myrtenol and (+)-myrtenol synergy with conventional drugs was apparently driven by membrane damage since the treatment with both terpenes led to a significant drop in membrane potential similar to the action of benzalkonium chloride. Thus, due to the low toxicity of myrtenol, it seems to be a promising agent to increase the efficiency of the treatment of infections caused by bacteria and be fungi of the genus Candida as well as mixed fungal–bacterial infections, including resistant strains.
When and How to Use MIC in Clinical Practice?
Authors: Magréault Sophie , Jauréguy Françoise , Carbonnelle Etienne , Zahar Jean-Ralph
Published: December 2022

Bacterial resistance to antibiotics continues to be a global public health problem. The choice of the most effective antibiotic and the use of an adapted dose in the initial phase of the infection are essential to limit the emergence of resistance. This will depend on (i) the isolated bacteria and its resistance profile, (ii) the pharmacodynamic (PD) profile of the antibiotic used and its level of toxicity, (iii) the site of infection, and (iv) the pharmacokinetic (PK) profile of the patient. In order to take account of both parameters to optimize the administered treatment, a minimal inhibitory concentration (MIC) determination associated with therapeutic drug monitoring (TDM) and their combined interpretation are required. The objective of this narrative review is thus to suggest microbiological, pharmacological, and/or clinical situations for which this approach could be useful. Regarding the microbiological aspect, such as the detection of antibiotic resistance and its level, the preservation of broad-spectrum β-lactams is particularly discussed. PK-PD profiles are relevant for difficult-to-reach infections and specific populations such as intensive care patients, cystic fibrosis patients, obese, or elderly patients. Finally, MIC and TDM are tools available to clinicians, who should not hesitate to use them to manage their patients.
New Insights into the Mechanism of Antibacterial Action of Synthetic Peptide Mo-CBP3-PepI against Klebsiella pneumoniae
Authors: Branco Levi A. C. , Souza Pedro F. N. , Neto Nilton A. S. , Aguiar Tawanny K. B. , Silva Ayrles F. B. , Carneiro Rômulo F. , Nagano Celso S. , Mesquita Felipe P. , Lima Luina B. , Freitas Cleverson D. T.
Published: December 2022

Klebsiella pneumoniae is a multidrug-resistant opportunistic human pathogen related to various infections. As such, synthetic peptides have emerged as potential alternative molecules. Mo-CBP3-PepI has presented great activity against K. pneumoniae by presenting an MIC50 at a very low concentration (31.25 µg mL−1). Here, fluorescence microscopy and proteomic analysis revealed the alteration in cell membrane permeability, ROS overproduction, and protein profile of K. pneumoniae cells treated with Mo-CBP3-PepI. Mo-CBP3-PepI led to ROS overaccumulation and membrane pore formation in K. pneumoniae cells. Furthermore, the proteomic analysis highlighted changes in essential metabolic pathways. For example, after treatment of K. pneumoniae cells with Mo-CBP3-PepI, a reduction in the abundance of protein related to DNA and protein metabolism, cytoskeleton and cell wall organization, redox metabolism, regulation factors, ribosomal proteins, and resistance to antibiotics was seen. The reduction in proteins involved in vital processes for cell life, such as DNA repair, cell wall turnover, and protein turnover, results in the accumulation of ROS, driving the cell to death. Our findings indicated that Mo-CBP3-PepI might have mechanisms of action against K. pneumoniae cells, mitigating the development of resistance and thus being a potent molecule to be employed in producing new drugs against K. pneumoniae infections.
Hand-Portable Miniaturized Liquid Chromatography for the Determination of Chlorogenic Acids in Dietary Supplements
Authors: Soto Camila , Ponce-Rodríguez Henry Daniel , Verdú-Andrés Jorge , Campíns-Falcó Pilar , Herráez-Hernández Rosa
Published: December 2022

With the explosive growth of the dietary supplements industry, new demands have emerged that cannot be faced with the sophisticated instrumentation available in well-equipped laboratories. In particular, there is a demand for simplified and easy-to-use instruments, capable of providing results in short times of analysis. In this study, a hand-portable miniaturized liquid chromatograph (portable LC) has been tested for the determination of chlorogenic acids (CGAs) in products intended to supplement the diet and elaborated with green coffee extracts. CGAs offer several health benefits due to their antioxidant properties, and an increasing number of dietary supplements are marketed with claimed high contents of these compounds. The results obtained with the proposed portable LC approach have been compared with those obtained with two other miniaturized benchtop liquid chromatography instruments, namely, a capillary liquid chromatograph (capLC) and a nano liquid chromatograph (nanoLC). Although compared with the methods that used the benchtop instruments, the sensitivity attainable was lower, the portable LC instrument provided a comparable analytical performance for the quantification of the main GCAs at low mg g−1 levels, and it was clearly superior in terms of speed. The proposed portable LC-based method can be applied to assess the content and distribution profile of the predominant CGAs in this kind of dietary supplement. It can be also used to estimate the antioxidant power due to CGAs, as well as their preservation state.