Miracle-dz/UniFAR-FTUs huggingface dataset:
COVID-19: Another Cause of Dental Anxiety?

Background Fear has always been closely linked to dentistry but it could be intensified by the objective risks imposed by the pandemic. The objective of this study was to determine the profile of the frightened dental patient during the COVID-19 pandemic and determine measures taken by dentists to reduce fear and increase security among their patients. Material/Methods An anonymous online survey was conducted between March 15 and April 15, 2021. The respondents were 2060 adult citizens of the Republic of Serbia. In addition to demographic data, data related to the COVID-19 pandemic, dental fear, and attitudes and fear of dental interventions during the ongoing pandemic were compiled. The data were analyzed using descriptive statistics: the chi-square test and Pearson’s coefficient. Results Seventy percent of the respondents felt some level of fear of the ongoing pandemic, 50% felt fear of going to a dentist during the pandemic, 20% considered a dental office a hotspot for the transmission of SARS-CoV-2, and 43% would visit their dentist only in the case of emergency. Conclusions The COVID-19 pandemic has affected the attitudes and behavior of people pertaining to visits to dental offices. Identifying frightened patients and their opinions and fears at this challenging time would make it easier for dentists to include protocols in their everyday practice to increase a sense of security among their patients, such as implementing preventive measures in front of the patients, ensuring an empty waiting room, and providing telephone consultations.
No jab, no international travel? Linking TRA, mass media, motivation, and experience

Despite mixed emotions about COVID-19 vaccination as a precondition for international travel, COVID-19 vaccination is being advocated as one of the instruments that could facilitate safe free movement during the COVID-19 pandemic. Accordingly, the purpose of the present research is to distinguish the underlying mechanisms that could predict individuals’ intentions to take the COVID-19 vaccine as a precondition for international travel. The conceptual framework was built on the extended theory of reasoned action (TRA), which incorporates mass media coverage, travel motivations, and previous travel experience. An online purposive sampling technique was utilized in this study, and 1188 responses were collected. Subsequently, structural equation modeling was utilized to test the proposed model. The originality of the present study lies with unraveling the mechanisms that affect the intention to take the COVID-19 vaccine as a precondition for international travel. In addition, the discussions are presented in subsequent sections of the paper.
Multigenerational Life-History Responses to pH in Distinct Populations of the Copepod Tigriopus californicus

Intertidal zones are highly dynamic and harsh habitats: organisms that persist there must face many stressors, including drastic changes in seawater pH, which can be strongly influenced by biological processes. Coastal ecosystems are heterogeneous in space and time, and populations can be exposed to distinct selective pressures and evolve different capacities for acclimation to changes in pH. Tigriopus californicus is a harpacticoid copepod found in high-shore rock pools on the west coast of North America. It is a model system for studying population dynamics in diverse environments, but little is known about its responses to changes in seawater pH. I quantified the effects of pH on the survivorship, fecundity, and development of four T. californicus populations from San Juan Island, Washington, across three generations. For all populations and generations, copepod cultures had lower survivorship and delayed development under extended exposure to higher pH treatments (pH 7.5 and pH 8.0), whereas cultures maintained in lower pH (7.0) displayed stable population growth over time. Reciprocal transplants between treatments demonstrated that these pH effects were reversible. Life histories were distinct between populations, and there were differences in the magnitudes of pH effects on development and culture growth that persisted through multiple generations. These results suggest that T. californicus might not have the generalist physiology that might be expected of an intertidal species, and it could be adapted to lower average pH conditions than those that occur in adjacent open waters.
Graphics Out Loud: Perceptions and Strategic Actions of Students With Visual Impairments When Engaging With Graphics

Introduction: Facility in graphics use is critical to accessing data visualizations in science, technology, engineering, the arts, and mathematics (STEAM) content areas. Efforts to understand the cognitive processes underlying strategic action by students with visual impairments must consider both metacognition and self-regulated learning. Methods: Think-aloud transcripts were analyzed using a priori level one coding based on the Model of Graphic Interpretation (MoGI) followed by second-level coding to analyze nuanced commonalities and differences based on performance, medium, and level. Results: Differences in each component of the MoGI were found for print graphic and tactile graphic users, particularly based on performance and level. Higher performers were better able to articulate strategy use and reasons for selecting strategies. Discussion: Findings coincide with quantitative findings of the participants (see Zebehazy & Wilton, 2021). Transcripts provided additional confirming evidence of the interdependence of MoGI components. Implications for Practitioners: Use of think aloud can support assessment and instruction of students with visual impairments to build strategic action and metacognition when engaging with graphics.
Lockdown Efficacy in Controlling the Spread of COVID-19 May Be Waning Due to Decline in Public Compliance, Especially among Unvaccinated Individuals: A Cross-Sectional Study in Israel

Public compliance is paramount for the success of public health measures and decision making, such as lockdowns, in controlling the spread of diseases. The aim of this population-based cross-sectional study was to investigate the level of reported compliance with home isolation among the adult Israeli population (n = 940) during the first three national lockdowns, compliance with a potential fourth national lockdown if enacted, risk perception of COVID-19, vaccination uptake status, perceived effectiveness of the vaccine, and compliance with additional protective health behaviors (e.g., mask wearing and social distancing). Following widespread compliance with initial lockdowns (90.7% reported “high” or “very high” compliance), as few as 60.1% of participants indicated that they would comply with a fourth lockdown if the government decides to enact it. Non-vaccinated individuals reported the lowest levels of compliance with previous lockdowns, compared to participants who received one or two vaccines and participants vaccinated with three doses. Adjusted for gender and age, the results suggest that fearing being infected with COVID-19, perceiving the vaccine to be effective, and reporting being compliant with other health behaviors—such as mask wearing and maintaining social distance from others—are predictors of lockdown compliance. Considering the effect of pandemic lockdown fatigue, there is little support for additional lockdowns among the Israeli public, unless dramatic changes occur in the characteristics of the COVID-19 pandemic. Compliance with lockdowns is reduced among individuals who are at higher risk of contracting COVID-19, therefore rendering this non-pharmaceutical intervention even less effective in reducing the spread of the disease.
THE EFFECT OF OBESITY ON INTRAOPERATIVE AND EARLY POSTOPERATIVE (IN HOSPITAL) COMPLICATIONS IN PATIENTS UNDERGOING TOTAL PROSTHESIS

OBJECTIVE: Due to the increase in both obesity and total knee prosthesis arthroplasty (TKA), the number of TKA applications in obese patients has increased in recent years. However, it is debatable whether obesity is a risk factor for the complications observed in TKA. The aim of this study is to investigate the effect of obesity on intraoperative and early postoperative (in hospital) complications in patients with TKA. MATERIAL AND METHODS: Patients were divided into 2 groups according to body mass index; Group 1: obese patients (Body mass index: BMI> 30 kg/m2), Group 2: non-obese patients (BMI≤30 kg/m2). Patient files were examined from 4 different perspectives (Demographic data, Preoperative features, Intraoperative features, Postoperative features). T-test was used in the analysis of parametric data, and Chi-square test was used in the analysis of non-parametric data. A value of P<0.05 was considered significant. RESULTS: There was no statistically significant difference between the obese and non-obese patients in respect of the length of hospital stay, the operation time, the tourniquet time, the number of blood transfusions, presence of ischemic heart disease, diabetes, ASA scores, local skin complications, and systemic complications such as deep vein thrombosis, sepsis, pulmonary embolism and mortality. However, a statistically significant difference was found in presence of hypertension, hypothyroidism, and obstructive sleep apnea in the obese group. CONCLUSIONS: There is no difference in terms of local and systemic complications in obese and non-obese patients undergoing TKA.
Determining Existing Human Population Immunity as Part of Assessing Influenza Pandemic Risk

Zoonotic influenza infections continue to threaten human health. Ongoing surveillance and risk assessment of animal viruses are needed for pandemic preparedness, and population immunity is an important component of risk assessment. We determined age-stratified hemagglutinin inhibition seroprevalence against 5 swine influenza viruses circulating in Hong Kong and Guangzhou in China. Using hemagglutinin inhibition seroprevalence and titers, we modeled the effect of population immunity on the basic reproduction number (R0) if each virus were to become transmissible among humans. Among 353 individual serum samples, we reported low seroprevalence for triple-reassortant H1N2 and Eurasian avian-like H1N1 influenza viruses, which would reduce R0 by only 18%–20%. The smallest R0 needed to cause a pandemic was 1.22–1.24, meaning existing population immunity would be insufficient to block the spread of these H1N1 or H1N2 variants. For human-origin H3N2, existing population immunity could suppress R0 by 47%, thus reducing pandemic risk.
Diagnosis of the nutritional status of coffee tree according to fruit phenology

The appropriate time for leaf collection to evaluate the nutritional status of the coffee tree should be carried out when the nutrient is in higher levels in the leaves, which may vary according to the phenological stage of the fruits. Macro and micronutrients do not show the same pattern regarding the period of highest leaf content. Therefore, it is coherent to define different times of leaf collection for each nutrient. The objective of this study was to verify the most suitable times for collecting leaves to evaluate the nutritional status of coffee plants based on the phenological development of coffee fruits. The experiment was carried out in a commercial field, in which six coffee cultivars were used (Acauã Novo, Bourbon Amarelo, Catuaí Vermelho IAC 144, Catucaí 20/15, IAC 125 RN and IPR 100). The collections were carried out in four phenological phases of coffee fruit development (floral bud maturation, chumbinho, fruit expansion, and fruit granulation). The periods with the highest concentrations varied based on the phenological stages of the fruits, and differences in concentrations were also observed between the cultivars examined. The highest zinc concentration in the leaves was observed in the maturation phase of the floral bud. Foliar collection for the diagnosis of the nutritional state of the coffee plant should be done for each nutrient based on the phenology of the fruits.
pH-Induced Changes in the SERS Spectrum of Thiophenol at Gold Electrodes during Cyclic Voltammetry

Thiophenol is a model compound used in the study of self-assembly of arylthiols on gold surfaces. In particular, changes in the surface-enhanced Raman scattering (SERS) spectra of these self-assembled monolayers (SAMs) with a change of conditions have been ascribed to, for example, differences in orientation with respect to the surface, protonation state, and electrode potential. Here, we show that potential-induced changes in the SERS spectra of SAMs of thiophenol on electrochemically roughened gold surfaces can be due to local pH changes at the electrode. The changes observed during the potential step and cyclic voltammetry experiments are identical to those induced by acid–base switching experiments in a protic solvent. The data indicate that the potential-dependent spectral changes, assigned earlier to changes in molecular orientation with respect to the surface, can be ascribed to changes in the pH locally at the electrode. The pH at the electrode can change as much as several pH units during electrochemical measurements that reach positive potentials where oxidation of adventitious water can occur. Furthermore, once perturbed by applying positive potentials, the pH at the electrode takes considerable time to recover to that of the bulk solution. It is noted that the changes in pH even during cyclic voltammetry in organic solvents can be equivalent to the addition of strong acids, such as CF3SO3H, and such effects should be considered in the study of the redox chemistry of pH-sensitive redox systems and potential-dependent SERS in particular.
Alginate: Enhancement Strategies for Advanced Applications

Alginate is an excellent biodegradable and renewable material that is already used for a broad range of industrial applications, including advanced fields, such as biomedicine and bioengineering, due to its excellent biodegradable and biocompatible properties. This biopolymer can be produced from brown algae or a microorganism culture. This review presents the principles, chemical structures, gelation properties, chemical interactions, production, sterilization, purification, types, and alginate-based hydrogels developed so far. We present all of the advanced strategies used to remarkably enhance this biopolymer’s physicochemical and biological characteristics in various forms, such as injectable gels, fibers, films, hydrogels, and scaffolds. Thus, we present here all of the material engineering enhancement approaches achieved so far in this biopolymer in terms of mechanical reinforcement, thermal and electrical performance, wettability, water sorption and diffusion, antimicrobial activity, in vivo and in vitro biological behavior, including toxicity, cell adhesion, proliferation, and differentiation, immunological response, biodegradation, porosity, and its use as scaffolds for tissue engineering applications. These improvements to overcome the drawbacks of the alginate biopolymer could exponentially increase the significant number of alginate applications that go from the paper industry to the bioprinting of organs.
Simultaneous Bilateral Proximal Humerus Fractures Treated with Single-Stage Bilateral Reverse Shoulder Arthroplasty

Introduction Simultaneous bilateral fractures of the proximal humerus are infrequent, and simultaneous bilateral three- or four-part fractures are even rarer. Reverse shoulder arthroplasty (RSA) is being used increasingly for the treatment of three- and four-part fractures of the proximal humerus. However, treatment of simultaneous bilateral fractures of the proximal humerus is difficult because of concern about postoperative immobilization and rehabilitation. Case Presentation. A 75-year-old woman presented with bilateral shoulder pain subsequent to a fall on the street. Physical examination and radiographs showed simultaneous bilateral fractures of the proximal humerus. The right side fracture was classified as a four-part fracture and the left side fracture as a three-part fracture, according to Neer's classification. The right shoulder had a risk of avascular necrosis of the humeral head. For the left shoulder, the fracture type had caused ischemia of the humeral head. Single-stage bilateral RSA was performed 9 days after the injury. An abduction pillow was applied for 5 weeks postoperatively. Passive motion exercises were permitted starting at 4 weeks postoperatively, and active range of motion exercises were permitted at 6 weeks postoperatively. At the patient's most recent follow-up 30 months after surgery, the patient reported no restriction of the activities of daily living. Radiographs revealed no lucent line on the humerus and glenoid components, although bone resorption and superior retraction of the tuberosities on both sides were observed. Conclusions Single-stage bilateral RSA improved shoulder function, but healing of the greater tuberosity can affect the improvement in external rotation after the operation. Although a long-term follow-up is needed, single-stage bilateral RSA appears to be a viable treatment option.
The role of flexibility on propulsive performance of flapping fins

The versatility of the fish to adapt to diverse swimming requirements has attracted the attention of researchers in studying bioinspired propulsion for developing efficient underwater robotics. The tail/caudal fin is a major source of thrust generation and is believed that the fish modulates its fin stiffness to optimize the propulsive performance. Inspired by the stiffness modulation of fish fins, the objective of this research is to predict and evaluate the effect of flexibility on propulsive performance of flapping fins. The stiffness of the fins vary along their length and optimization studies have been performed to predict the stiffness profiles that maximize performance. Experiments performed on the real fish caudal fins to measure the stiffness variation along their length validate the theoretical optimal stiffness profiles and provide an insight about the evolution of fish fins for optimal performance. Along with the fin stiffness, the stiffness of the joint (caudal peduncle) connecting the fish body to the tail plays a major role in the generation of thrust. The numerical and experimental investigation has shown that there exists an optimal combination of fin and joint stiffness for each operating condition, thus providing the motivation for active stiffness control during locomotion to optimize efficiency. Inspired by nature’s ability to modulate stiffness and shape for different operating conditions, an investigation has been carried out on active control of flapping foils for thrust tailoring using Macro Fiber Composites (MFCs). It has been observed that the performance can be enhanced by controlling the deformation, and distributed actuation along fin produces maximum performance through proper selection of the phase difference between heaving and voltage. Flapping fins produce forces which are oscillatory in nature causing center of mass (COM) oscillations of the attached bodies posing problems of control and maneuverability. Optimization studies have revealed that flexibility of the fin plays a major role in reducing the COM oscillations along with the other operating parameters. Based on these studies, the design principles and guidelines that control the performance have been proposed which aid in the development of aerial and underwater robotic vehicles. Additionally, these studies provide some insight in to how fish might modulate its stiffness based on the requirements. i To My Parents Smt. Vijaya Kumari & Sri. Kanaka Das
The effects of web quality, perceived benefits, security and data privacy on behavioral intention and e-WOM of online travel agencies

This study seeks to empirically examine the effect of Perceived web quality (PWQ), Perceived Benefits (PB), Security and Privacy (SP), Behavioral Intention (BI) and electronic Word-of-mouth (e-WOM) among online travel agency users in Indonesia. In this study, the behavioral intention variable is the mediating variable, and e-WOM is the dependent variable. The study was conducted on 150 online shopping users in Indonesia using the PLS analysis tool. The test results show that the variables Perceived web quality (PWQ), Perceived Benefits (PB), Security and Privacy (SP) have a significant influence on Behavioral intention (BI) and on electronic Word-of-mouth (e-WOM). The results of the mediation test showed that Behavioral intention (BI) was able to strengthen the influence of the independent variable on electronic word-of-mouth (e-WOM). This study practically underscores the importance of website quality and security and privacy aspects as factors that influence user intentions of online travel agencies in Indonesia. The push for online service providers and sellers to improve services and shopping security in the digital age is a practical implication of this finding.
Considering gender differences in measuring household food insecurity in northern Ghana

ABSTRACT This study compares estimates of household food insecurity between men and women living within the same household (n = 866) to assess whether there is a gender bias in reporting. The main research question is, do household food insecurity scores and prevalence categories differ between male and female spouses within households in the sample? Findings indicate that men's household food insecurity estimates were lower on average at 3.49, than women's estimates at 5.06. There is also a statistically significant decrease in men's estimates when compared to women's. Overall, these findings question the reliability of household-level food insecurity measures that rely on heads of households' estimations by pointing to discrepancies found in this reporting between husbands and wives within the same household. Since this study sampled married women and men within the same household, gender differences found are also more directly attributable to gender than in most other studies that compare male and female-headed households' food insecurity reporting. Though further assessments across other cases are needed, more reliable measures of household food insecurity could include averaging estimates of multiple individuals within households. Qualitative research into the gendered dynamics could also improve sampling and the interpretation of findings from surveys on household-level measures.
Room-temperature single-electron tunneling in highly-doped silicon-on-insulator nanoscale field-effect transistors

From the viewpoint of high- (room-) temperature operation of donor-based single-electron transistors, we make a comparative study of nano-scale silicon-on-insulator transistors with phosphorus-doped channels for two dopant-concentration regimes: N D ≈ 1 × 1018 and 2 × 1020 cm−3. We experimentally show that the high-N D devices can provide room-temperature single-electron tunneling operation owing to a large tunnel-barrier height, while operation temperature is limited to about 100 K for the low-N D devices. Numerical simulations of random donor-atom distributions indicate that donor clustering plays a dominant role in the formation of quantum dots, and suggests that clusters comprising of more-than-three donors are responsible for room-temperature operation.