Miracle-dz/UniFAR-FTUs huggingface dataset:
The Effects of Mouthwashes on the Color Stability of Resin-Based Restorative Materials

Objective: This study investigated the effects of three types of mouthwash on the color stability of three resin-based restorative materials (nanohybrid resin composite, sonic-activated bulk-fill material, and compomer). Materials and Methods: To this end, 120 cylindrical disc specimens were prepared and polished, after which they were incubated in distilled water for 24 hours for post-polymerization. The baseline color values of each specimen were measured with a spectrophotometer, then the specimens were randomly divided into four groups. Following immersion in the mouthwashes for 24 hours, the specimens were rinsed with distilled water and dried before the color measurement was repeated. The values of color change (ΔE00) were subsequently calculated. A two-way analysis of variance and Duncan’s post hoc multiple comparison tests were conducted to determine statistically significant differences among the restorative materials. Results: All samples showed discoloration after immersion, albeit some instances of discoloration were imperceptible. In this respect, a statistically significant difference was found among the restorative materials and mouthwashes (p<0.05). Imperceptible ΔE00 values were derived on the nanohybrid resin composite and compomer, but perceptible and acceptable ΔE00 values were detected on the sonic-activated bulk-fill materials (p<0.05). The clinically unacceptable discoloration was observed on the sonic-activated bulk-fill composite immersed in Listerine®. Conclusions: Clinicians should make recommendations based on the potential staining capacity of mouthwashes prescribed for daily use in restorative materials. In this way, the need for renewal of restorations due to discoloration could be avoided. ODOVTOS-Int. J. Dent. Sc. | No. 23-1: 91-102 ODOVTOS-International Journal of Dental Sciences Ertürk-Avunduk et al: The Effects of Mouthwashes on the Color Stability of Resin-Based Restorative Materials ODOVTOS-Int. J. Dent. Sc. | No. 23-1: 91-102 I SSN: 2215-3411. 92 ODOVTOS-Int. J. Dent. Sc. | No. 23-1: 91-102 I SSN: 2215-3411. 93
Why Bayesian “Evidence for H1” in One Condition and Bayesian “Evidence for H0” in Another Condition Does Not Mean Good-Enough Bayesian Evidence for a Difference Between the Conditions

Psychologists are often interested in whether an independent variable has a different effect in condition A than in condition B. To test such a question, one needs to directly compare the effect of that variable in the two conditions (i.e., test the interaction). Yet many researchers tend to stop when they find a significant test in one condition and a nonsignificant test in the other condition, deeming this as sufficient evidence for a difference between the two conditions. In this Tutorial, we aim to raise awareness of this inferential mistake when Bayes factors are used with conventional cutoffs to draw conclusions. For instance, some researchers might falsely conclude that there must be good-enough evidence for the interaction if they find good-enough Bayesian evidence for the alternative hypothesis, H1, in condition A and good-enough Bayesian evidence for the null hypothesis, H0, in condition B. The case study we introduce highlights that ignoring the test of the interaction can lead to unjustified conclusions and demonstrates that the principle that any assertion about the existence of an interaction necessitates the direct comparison of the conditions is as true for Bayesian as it is for frequentist statistics. We provide an R script of the analyses of the case study and a Shiny app that can be used with a 2 × 2 design to develop intuitions on this issue, and we introduce a rule of thumb with which one can estimate the sample size one might need to have a well-powered design.
Smoking Behavior, Social Support, and Cessation Motivation in Smoking Among Health Sciences’ Students

ABSTRACT Introduction : Many students have been accustomed to smoking, including those majoring at health sciences. Theoretically, they are supposed to be the ones who are actively aware of some possible health damages caused by smoking habit. Thus, people around them play an essential role in taking control of someone’s pattern through social support, especially over those who are highly motivated to quit smoking. Objective: This study aimed to identify smoking behavior, social support, and cessation motivation in smoking among health sciences’ students. Methods : This research was categorized as observational-descriptive one, with the use of accidental sampling technique to recruit as many as 63 students of faculty of health sciences who were defined as active smokers. The data, furthermore, were collected by means of a questionnaire. At last, a statistical-descriptive analysis was used to evaluate the data. Result: The result was most of the involved respondents were shown to have a moderate trend of smoking (65%). On the other hand, the majority of the respondents had been supported through some types of social support with relatively high percentage, to name appraisal support (indicating 71%), tangible support (indicating 87%), self-esteem support (indicating 97%), and belonging support (indicating 92%). Moreover, most of the respondents were equipped by the high level of quittance motivation from smoking, signifying 71%. Discussion : This research had indicated that the level of smoking habit perceived by the respondents was moderate. In short, appraisal support was defined as high, tangible support low, self-esteem support high, and belonging support high. In addition, some of the respondents had demonstrated a high level of quittance motivation from smoking
Time of Implant Placement in the Esthetic Zone: Does it affect the Thickness of the Labial Bone?

Purpose: to evaluate the labial bone thickness (LBT) in the esthetic zone of the maxilla after insertion of dental implants: immediately, 4-6 weeks, and 3 months after tooth extraction, by using cone beam computed tomography (CBCT). Patients and methods: Fifteen cases, who had single non-restorable upper anterior tooth or an extracted tooth not exceeding 3 months, were involved in the study. The patients were divided equally into three groups. In group 1, implants were placed immediately after tooth extraction. In group 2, implants were inserted 4-6 weeks after extraction. In group 3, implants were inserted 3 months following tooth extraction. All implants were covered by bovine bone graft substitute (BBGS) and platelet rich fibrin (PRF) membrane. The LBT was measured immediately after implant insertion, six and 12 months of surgery by using (CBCT). The patients were examined clinically by assessing probing depth (PD), sulcus bleeding index (SBI), pink esthetic score (PES), and visual analogue score (VAS). Results: Successful osseointegration was observed in all patients, both clinically and radiographically. There was insignificant difference in the labial bone thickness between the 3 groups; however, the amount of bone resorption was considered significant only in group 1, at the implant shoulder, during the first interval of the follow up (immediate to six months postoperative). Conclusion: Preservation of LBT at the labial surface of the dental implants in the esthetic zone of the maxilla appears to be independent on the time of implant insertion after tooth extraction. It was possible to create and preserve a stable layer of labial bone over implant surface, by the application of BBGS and PRF membrane. Codex : 51/20.07 azhardentj@azhar.edu. eg http://adjg.journals. ekb.eg DOI: 10.21608/adjg.2020. 23230.1233 Oral Medicine & Surgical Sciences (Oral Medicine, Oral & Maxillofacial Surgery, Oral Pathology, Oral Biology)
Dominant Correlation Effects in Two-Electron Atoms

Two-electron atoms have been investigated near threshold of double escape within the framework of hyperspherical coordinates. A particularly useful set of hyperspherical angles has been used. It is well known for many years that the hyperradial motion is nearly separable from the hyperspherical angular motion. Therefore, the Born-Oppenheimer separation method should be useful. However, the success of that method in molecular physics is based on the small mass ratio, electron mass to nuclear mass. In the atomic application such a small parameter does not exist. Nevertheless the method works surprisingly well in the lower part of the spectrum. For increasing excitation energy the method becomes shaky. Near ionization threshold, it breaks even down. The author will present elsewhere an improved Born-Oppenheimer method. First pilot developments and comparison with the experimental situation are presented already here. Inclusion of a momentum-momentum radial coupling delivers an improved basis. We show that our extended Born-Oppenheimer approach leads to a deformation of the whole potential energy surface during the collision. In consequence of this deformation we outline a quantum derivation of the Wannier threshold cross section law, and we show that (e, 2e) angular distribution data are strongly influenced by that surface deformation. Finally, we present a mechanism for electron pair formation and decay leading to a supercurrent independent of the temperature. Our framework can be extended to more than two electrons, say 3 or 4. We conclude that our improved Born-Oppenheimer method [1] is expected not only to deliver better numerical data, but it is expected to describe also the Wannier phenomenon. The idea of the new theory together with first qualitative results is presented in this paper.
Presupposition Triggers in British and Saudi English Newspaper Opinions

This paper aims to investigate the presupposition triggers in British and Saudi English newspaper opinions. The data of the study comprises a sample of 30 newspaper opinions articles selected from the Saudi Gazette and the UK Gazette (15 articles each). The results demonstrate that the Saudi articles receive the highest number of presupposition triggers occurrences, that is 556 (56.60%) compared to the UK articles which receive 426 (43.40%). The results also reveal that ‘existential’ and ‘lexical’ presupposition triggers in both cases are the ones used the most while ‘non-factive’ ‘structural’ presupposition triggers are the least. Comparison between the two cases indicates that there are considerable similarities. The few differences are not very significant; hence, it is true to say that native and non-native writers of English used presupposition triggers similarly. Based on the study findings, the following implications have been drawn: presupposition triggers help speakers and writers pass a lot of information to their audiences; they are used by speakers and writers to set the background of their negotiation for better and effective communication; and they are used by speakers and writers in order to mold the ideologies of their audiences. The study concludes with some pedagogical recommendations for EFL instructors in the TEFL context and suggestions for further studies on presuppositions in discourse analysis.
Reusable learning objects: a blended learning tool in teaching computer-aided design to engineering undergraduates

PurposeBlended learning is an emerging trend across many educational settings, adopting the purposeful integration of traditional face-to-face and online teaching to establishing an engaging learning experience for the students. Blended learning provides an ideal platform for the implementation of reusable learning objects (RLOs) as a pedagogical tool to support classroom instruction.Design/methodology/approachThis study had conducted a quasi-experiment followed by semi-structured interviews to determine if a blended learning approach using RLOs can enhance students’ learning in an undergraduate engineering computer-aided design (CAD) module. This study involved learners studying engineering in two different academic years.FindingsStudents from the first year were taught using traditional face-to-face teaching approach. The cohort of students from the subsequent year adopted a blended learning approach: face to face and access to a series of RLOs. The analysis revealed statistical evidence that the use of blended learning had a significant impact on the students' end of term exam grades in the CAD module in comparison to the students who undertook traditional face-to-face teaching approach. The qualitative findings highlighted the positive impact of RLOs on students’ learning behaviour, engagement and knowledge retention.Originality/valueThis study provided empirical evidence of the benefits of using RLOs as a blended learning tool in engineering domain. From a theoretical perspective, the findings highlighted the importance of good instructional design and sound theoretical underpinning of the pedagogical strategy. From a practical point of view, this study informed academics on how to improve learner's academic achievement using RLOs.
Effect of Biological, Chemical and Physical Agents on Common Bean Plant under Saline Conditions

Phaseolus vulgaris L. are salt-sensitive plants in all growth phases. Hence, this study aimed to investigate the benefit impacts of magnetized water (MW) alone or combined with soil amendment by agricultural gypsum and plant inoculation with vesicular arbuscular micorrhyzal fungi (AMF) on growth (plant height, dry weight and leaf area), relative water content (RWC%), water retention capacity (WRC), salt tolerance index (STI%), foliage mineral contents (N, P, K, Ca and Na), (K+Ca)/Na ratio and yield components (number of pods/plant, number of seeds/pod, 100seeds weight, seed yield/feddan and harvest index% ) of dry bean cv. Nebraska grown under salinity conditions. The study was conducted in Dakahlia Governorate at the northeastern of the Delta Egypt during summer seasons of 2019 and 2020. A split plot design with three replicates was used. Salinity significantly reduced all traits, particularly seed yield (around 53.9% losses), except Na%. Magnetized water (MW) and soil amendments sole or in combination had a tendency to increase all studied parameters, except Na%. Moreover, a negative relationship was observed between foliage Na content and seed yield, whereas a positive one was observed between salt tolerance index% and (K+Ca)/Na ratio which were more reliable in selection criterion in bean plant. Overall, the treatment of magnetized water + gypsum + micorrhyzae is a very important management tool in common bean production in the clay and intermediate salinity soils of northern Delta of Egypt.
Task characteristics and knowledge management performance: model development and scale construction

ABSTRACT Knowledge management (KM) plays a critical role in management academia, yet relatively few articles endeavour to study the outcome of KM – knowledge management performance indicators (KMPI). After a thorough review, this study concludes five shortcomings from the prior literature. To overcome such shortcomings, this study employs the focus/breadth/content-process dimensions originating from Contingency Perspective to conduct an exploratory case study, develop a KMPI model, accordingly conduct an empirical survey, and employ statistical techniques to examine model reliability and validity. This study constructs the KMPI model with eight constructs: knowledge profundity, replication, dissemination, extension, diversity, expansion, convergence, and creation. The empirical evidence of the 30-item scale indicates that the scale presents good reliability, construct validity, and high criterion validity. The model and the scale provide new insights to the practical and academic efforts in KM performance issues.
PENGARUH MODEL PEMBELAJARAN PROBLEM BASED FLIPPED CLASSROOM TERHADAP KETERAMPILAN PEMECAHAN MASALAH SISWA KELAS XI IPA

Tujuan penelitian ini adalah menganalisis perbedaan keterampilan pemecahan masalah siswa antara siswa yang belajar dengan model Problem Based Flipped Classroom (PBFC), model Traditional Flipped Classroom (TFC), dan model Direct Instruction (DI). Penelitian ini merupakan penelitian quasi eksperimen dengan desain post-test only control group design. Populasi penelitian ini berjumlah 357 siswa kelas XI IPA SMA Negeri 8 Denpasar dengan sampel penelitian berjumlah 107 siswa dan terdistribusi ke dalam tiga kelas. Data keterampilan pemecahan masalah siswa diperoleh melalui tes keterampilan pemecahan masalah dan dianalisis menggunakan analisis deskripsif dengan taraf signifikansi 5%. Hasil penelitian ini menunjukan adanya perbedaan keterampilan pemecahan masalah siswa antara kelompok yang belajar dengan model PBFC, model TFC, dan model DI. Hal ini dibuktikan dengan hasil uji hipotesis menggunakan ANAKOVA yang menunjukan nilai statistik F* = 1317.899 dengan angka signifikansi 0,001 (p < 0,05) yang berarti hipotesis penelitian diterima. Hasil uji LSD menunjukan bahwa keterampilan pemecahan masalah siswa yang belajar dengan model PBFC lebih tinggi dibandingkan dengan TFC dan DI Kata Kunci: Model PBFC, Model TFC, Model DI, Keterampilan Pemecahan Masalah
Comparing the bonding strengths among three types of intra radical posts using push-out test: Laboratory study

Background: One of the major challenges that face any pediatric dentist is restoration the highly dilapidated primary anterior teeth. Conventionally, endodontic treatment must be performed before the restoration procedure. The root canal filling materials tend to prevent the adhesion between the synthetic resin, the restorative material, and dental surfaces. Several studies have confirmed that there are no negative effects of Eugenol on the bonding strength of fibrous posts which have been fixed with resinous compounds. The aim of this study: Evaluating the effect of different materials used in filling the root canal on the bonding strength using three types of posts in the primary anterior teeth. Materials and methods: The sample consisted of 135 extracted anterior canines. Vertical sections were made on the longitudinal axis of the tooth until reaching 1 mm higher than the cementoenamel junction. A complete pulpectomy was performed for all of the sample teeth. the sample was divided into three main groups, each of them contains 45 teeth according to the filling material type, group 1: Metapex, group 2: Zinc oxide and Eugenol paste immediately, Group3: Zinc oxide and Eugenol paste after 1 week, also, three types of posts were used to construct the teeth (short composite posts SCP, glass fiber posts GFP with flow composite, glass fiber posts with risen cement). All teeth were kept in Saline solution before the push-out test was performed by the Mechanical Test Machine. The results were statistically studied with both ANOVA and Bonferroni test. Results: The values of the bonding strength were greater when using METAPEX than when using Zinc oxide and Eugenol paste before and after solidification in all groups of posts, but with significant differences only in the short composite posts group (SCP). Conclusion: The use of zinc oxide and Eugenol paste as a root canal filling material resulted in a clear decrease in the attachment strength values of the various intra radical posts in the primary anterior teeth.
Valorization of Kimberlite Tailings by Carbon Capture and Utilization (CCU) Method

In the world of construction, cement plays a vital role, but despite its reputation and affordable prices, the cement industry faces multiple challenges due to pollution and sustainability concerns. This study aimed to assess the possibility of utilizing carbonated kimberlite tailings, a waste product from diamond mining, as a partial cement substitute in the preparation of concrete bricks. This is a unique opportunity to help close the gap between fundamental research in mineral carbonation and its industrial implementation to generate commercial products. Kimberlite was subjected to a mild thin-film carbonation process in a CO2 incubator at varying levels of CO2 concentration (10 vol% and 20 vol% at ambient pressure), kimberlite paste moisture content (10 wt% to 20 wt%), and chamber temperature (35 and 50 °C). The formation of magnesium carbonates, in the form of nesquehonite and lansfordite, was verified by X-ray diffraction analysis, and total CO2 uptake was quantified by thermal decomposition in furnace testing. Carbonated kimberlite tailings were then used to cast bricks. Replacement of cement between 10% and 20% were tested, with a constant water-to-binder ratio of 0.6:1, and a cementitious material-to-sand ratio of 1:3. Initial water absorption and 7- and 28-days compressive strength tests were carried out. The results obtained confirm the possibility of using carbonated kimberlite to replace cement partially, and highlight the benefits of carbonating the kimberlite for such application, and recommendations for future research are suggested. This study demonstrates the potential use of mining tailings to prototype the sequestration of CO2 into sustainable building materials to positively impact the increasing demand for cement-based products.
High‐Resolution 3‐D Shear Wave Velocity Model of the Tibetan Plateau: Implications for Crustal Deformation and Porphyry Cu Deposit Formation

The high topography of the Tibetan Plateau was generated by the Cenozoic India‐Eurasia collision. A high‐resolution shear wave velocity model can provide improved understanding of the Tibetan structure and crustal deformation with complicated tectonic evolution. Based on continuous seismic observations at approximately 400 stations, we collected over 10,000 Rayleigh wave phase velocity dispersion curves extracted from ambient noise cross‐correlation functions. A direct surface wave inversion method was applied to obtain an S wave velocity model of the Tibetan crust. A heterogeneous structure including several prominent low‐velocity zones (LVZs) and relatively narrow low‐velocity bands connecting the LVZs is revealed. Our model shows significant crustal low‐velocity structures with lateral variations along the Himalayan front. In the eastern segment of the Lhasa terrane, the LVZ is spatially correlated with Miocene porphyry Cu deposits, which are probably related to strong tearing of the Indian lithosphere, while preexisting weak zones contribute to the LVZs in the western segment. Meanwhile, the LVZ along the Bangong‐Nujiang suture could be considered as a channel for eastward extrusion of ductile material, that is, crustal flow on geological timescales. This “flow” in the middle‐lower crust probably contributed to the formation of the V‐shaped conjugate strike‐slip fault system in central Tibet. The development of conjugate strike‐slip faults, however, ceased near 90°E, since the eastward “flow” was blocked by an intracrustal high‐velocity block in Amdo. This preexisting rigid zone (containing the Amdo microcontinent) hence influences the pattern of material transport inside the Tibetan crust and the deformation of the plateau.