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Abstract Strain engineering is a powerful strategy for tuning the optical, electrical, vibrational properties of 2D nanomaterials. In this work, a four‐point bending apparatus is constructed to apply both compressive and tensile strain on 2D anisotropic black phosphorus flake. Further polarized Raman spectroscopy is used to study the vibrational modes of black phosphorus flakes under uniaxial strain applied along various crystalline orientations. Here, a strong anisotropic blue/redshift of A1g, B2g, and A2g modes is found under compressive/tensile strain, respectively. Interestingly, mode A1g exhibits the maximum/minimum shift while mode B2g and mode A2g present the minimum/maximum shift when the strain is applied along armchair/zigzag direction. Density functional theory calculations are carried out to investigate the anisotropic strain response mechanism, finding that the strain‐induced regulation of the P─P bond angle, bond length, and especially interlayer interaction has a giant influence on the Raman shift.

Thyme has been used for various therapeutic purposes in many different cultures, which makes it one of the most riveting medicinal plants throughout history. From its beneficial effects on the respiratory tract or the gastrointestinal system, to its unique skin-related activities, the investigation of the medicinal properties of thyme has always been an alluring topic for researchers aiming to develop conventional medications from this traditional herb. With an incentive to contribute to the extensive thyme research, three Thymus L. species namely Thymus cariensis Hub-Mor. & Jalas (endemic), Thymus praceox subsp. grossheimii (Ronniger) Jalas, and Thymus pubescens Boiss. et Kotschy ex Celak from Turkey were deeply investigated within this study. The analysis of the phytochemical constituents of the extracts was conducted by LC-MS/MS. 12 biologically important secondary metabolites (p-coumaric acid, caffeic acid, salicylic acid, quinic acid, fumaric acid, vanillin, malic acid, rutin, apigenin, naringenin, and nicotiflorin) were detected in all extracts. Their total phenolic and flavonoid contents were calculated (11.15 ± 0.17—61.12 ± 2.59 μg PEs/mg extract, 2.53 ± 0.04—40.28 ± 0.92 μg QEs/mg extract, respectively), and the antioxidant potential of the extracts was evaluated by DPPH and ABTS radical scavenging and CUPRAC activity methods, accordingly, the extracts were shown to possess significant antioxidant activity. Among them, Thymus cariensis Hub-Mor. & Jalas was the most active with IC50 values of 34.97 ± 1.00 μg/ml and 9.98 ± 0.04 μg/ml regarding the DPPH and ABTS radical scavenging assays, respectively, and an A0.5 value of 5.80 ± 0.02 μg/ml according to CUPRAC activity method. Their anticholinesterase, antityrosinase, and antiurease activities were also tested, Thymus cariensis Hub-Mor. & Jalas (35.61 ± 1.20%) and Thymus pubescens Boiss. et Kotschy ex Celak aerial part extract (33.49 ± 1.39%) exhibited moderate antibutyrylcholinesterase activity at 200 μg/ml concentration. The results of the cell viability assay indicated that the extracts demonstrated moderate-to-low cytotoxicity on A498 human renal cell lines. Furthermore, all studied extracts exerted noteworthy antimicrobial activity, especially against Candida tropicalis (MIC values: 19.53—78.12 μg/ml). The presented data substantiates the use of thyme extracts as therapeutic agents in both ethnomedicine and conventional therapies.

The function $ \xi(z)$ is obtained from the logarithmic derivative function $\sigma(z)$. The elliptic function $ \wp(z) $ is also derived from the $ \xi(z) $ function. The function $ \wp(z) $ is a function of double periodic and meromorphic function on lattices region. The function $ \wp(z) $ is also double function. The function $ \varphi(z) $ meromorphic and univalent function was obtained by the serial expansion of the function $ \wp(z)$. The function $ \varphi(z) $ obtained here is shown to be a convex function.

Phosphors can serve as color conversion layers to generate white light with varying optical features, including color rendering index (CRI), high correlated color temperature (CCT), and luminous efficacy. However, they are typically produced under harsh synthesis conditions such as high temperature, high pressure, and/or by employing a large amount of solvent. In this work, a facile, water-based, rapid method has been proposed to fabricate lanthanide-doped hydroxide-based phosphors. In this sense, sub-micrometer-sized Y(OH)3:Eu3+ particles (as red phosphor) were synthesized in water at ambient conditions in ≤60 min reaction time. The doping ratio was controlled from 2.5–20 mol %. Additionally, first principle calculations were performed on Y(OH)3:Eu3+ to understand the preferable doping scenario and its optoelectronic properties. As an application, these fabricated red phosphors were integrated into a PDMS/YAG:Ce3+ composite and used to generate white light. The resulting white light showed a remarkable improvement (≈24%) in terms of luminous efficiency, a slight reduction of CCT (from 3900 to 3600 K), and an unchanged CRI (≈60) as the amount of Y(OH)3:Eu3+ was increased.

Abstract Purpose: The effect of a prophylactic oleuropein-rich diet before anesthesia accompanied by the widely-used steroid-based neuromuscular drug rocuronium on mast cell activation was investigated in the study. Methods: 14 rabbits used in the study. The rabbits in the oleuropein group were given oleuropein-rich extract added to the animals’ water at doses of 20 mg/kg oleuropein for 15 days orally. After 15 days, all rabbits in the two groups were given general anesthesia with rocuronium of 1 mg/kg. After 1 day, animals were sacrificed and the liver tissue sections stained with H&E, toluidine blue and tryptase for immunohistochemical study. Results: There was no statistically significant difference between ALT, AST and albumin averages of the oleuropein and control groups (p> 0.05). The tryptase average of the control group was higher than the tryptase average of the oleuropein group and this difference was statistically significant (p=0.003). The T. blue average in the oleuropein group was higher than the control group. However, there was no statistically significant difference between groups (p=0.482). Conclusions: Rocuronium adverse effects, like hypersensitivity and anaphylaxis, may limit routine use of this substance. The use of oleuropein reduced the number of inflammatory cells and prevented degranulation.

By performing density functional theory (DFT)-based calculations, the performance of α-silicene as oxidation-resistant coating on Ag(111) surface is investigated. First of all, it is shown that the Ag(111) surface is quite reactive against O atoms and O2 molecules. It is known that when single-layer silicene is formed on the Ag(111) surface, the 3 × 3-reconstructed phase, α-silicene, is the ground state. Our investigation reveals that as a coating layer, α-silicene (i) strongly absorbs single O atoms and (ii) absorbs O2 molecules by breaking the strong O–O bond. (iii) Even the hollow sites, which are found to be most favorable penetration path for oxygens, serves as high-energy oxidation barrier, and (iv) α-silicene becomes more protective and less permeable in the presence of absorbed O atom. It appears that single-layer silicene is a quite promising material for ultra-thin oxidation-protective coating applications.

Using first-principles density functional theory calculations, we investigate adsorption properties and the diffusion mechanism of a Li atom on hydrogenated single-layer α- and β-silicene on a Ag(111) surface. It is found that a Li atom binds strongly on the surfaces of both α- and β-silicene, and it forms an ionic bond through the transfer of charge from the adsorbed atom to the surface. The binding energies of a Li atom on these surfaces are very similar. However, the diffusion barrier of a Li atom on H-α-Si is much higher than that on H-β-Si. The energy surface calculations show that a Li atom does not prefer to bind in the vicinity of the hydrogenated upper-Si atoms. Strong interaction between Li atoms and hydrogenated silicene phases and low diffusion barriers show that α- and β-silicene are promising platforms for Li-storage applications.

Transition metal trichalcogenides are layered materials with strong in-plane anisotropy, and their vibrational characteristics remain largely unexplored. Here, the authors present high-pressure Raman studies to uncover unusual vibrational effects within this specific class of materials.

ABSTRACT PURPOSE: To investigate the effects of preoperative rectal ozone insufflation on surgical wound healing over the proinflammatory cytokines and histopathological changes. METHODS: Twenty one rabbits were divided into 3 groups. Sham, surgical wound, and ozone applied (6 sessions, every other day 70 µg/mL in 12 mL O2-O3 mixture rectally) surgical wound groups were created. TNF-alpha and IL-6 levels from all rabbits were studied at the basal, 24th hour, and 72nd hour. The histopathological examination was done by removing the surgical scar tissue at the end of 72nd hour. RESULTS: TNF-alfa and IL-6 levels were significantly lower compared to the control group, in the rabbits treated with ozone. The increase in angiogenesis, the decrease in the number of inflammatory cells, epidermal and dermal regeneration, better collagen deposition, and increased keratinisation in stratum corneum were observed in the histopathological examination. It was determined that the wound healing noticeably accelerated in the ozone group. CONCLUSION: Preoperative rectal ozone insufflation had a positive effect on surgical wound healing in acute period.

This study aims to investigate the potential correlation between pseudoscientific beliefs and media literacy among pre-service teachers. In this study, a survey method was conducted. The research group consists of 332 pre-service teachers from a state university. Data were collected using two Likert scales, one on media literacy and the other on pseudoscientific beliefs. Data were analysed using descriptive analysis and inferential statistics methods. As a result, although pre-service teachers have high media literacy, their pseudoscientific beliefs are also high. Pseudo-medical beliefs increase significantly as media literacy increases. However, it has no significant correlation with pseudo-physical and pseudo-predictive beliefs. Also, as dependency and confidence in the media increase, all types of pseudoscientific beliefs decrease.

ABSTRACTBACKGROUND AND OBJECTIVES:Tenoxicam is widely used in osteoarthritis treatment and we aimedto compare the effectivity of oral and intra-articular administration of tenoxicam in osteoarthri-tis treatment.METHODS: This study was performed between 2011 and 2012 by retrospectively analyzing andcomparing the findings of 60 patients who were clinically and radiologically diagnosed with kneedegenerative osteoarthritis in Bünyan state hospital pain policlinic. 60 patients included in thestudy were divided into two groups. The first group (tenoxicam IA, n = 30) included patientfindings of those subjected to intra-articular injection of 20 mg tenoxicam to the knee oncea week for three weeks and the second group (oral tenoxicam, n = 30) included patients whowere administered 20 mg oral tenoxicam once a day for three weeks. All patients were clini-cally evaluated pre-treatment and in the 1st week, 1st month and 3rd month post-treatmentaccording to specified criteria.RESULTS AND CONCLUSIONS: Twenty two of 60 patients included in the study were male and 38were female. In both groups significant improvements were detected in all of the observedparameters: visual analog scale, Western Ontario McMaster Osteoarthritis Index (pain, physicalactivity, knee stiffness) and Lequesne index scores and in the evaluations performed in 1st week,1st month and 3rd month with respect to pre-treatment values. Besides, a better complianceto treatment and gastrointestinal system tolerability in tenoxicam IA group was also observed.Intra-articular tenoxicam administration could be thought as an alternative treatment methodin patients with knee osteoarthritis who cannot use oral tenoxicam especially due to systemicgastrointestinal system side effects and those who have difficulties in adapting to treatment.

PURPOSE:To evaluate the applicability and airway management capacity of v-gel(r) and Cobra PLA in rabbit anaesthesia during assisted (AV) or controlled ventilation (CV).METHODS:This study was carried out in 44 adult New Zealand white rabbit. Baseline arterial pH, PaCO2 and PaO2 values were recorded. Anaesthesia was induced with 5 mg/kg xylasine and 35 mg/kg ketamine HCI combination. AV rabbits were assigned as; control (CG-AV; n=5), LMA (LMA-AV; n=5), cobra PLA (PLA-AV; n=5) and v-gel (v-gelAV; n=5). Rabbits have CV were also assigned as; ET (ET-CV; n=6), LMA (LMA-CV; n=6), cobraPLA (PLA-CV; n=6) and v-gel (v-gelCV; n=6). All measurements were repeated 1st, 5th, 15th and 30th mins during anaesthesia.RESULTS: The less insertion time, number of attempt and complications are recorded in v-gel applied rabbits compared to other apparatus. For arterial pH values significant differences are recorded in especially at 15th and 30th min between groups of CV (p

The aim of this research was to conduct a review of studies using four-tier tests to detect misconceptions in physics education. Fifty-eight studies whose main purpose was to develop a four-tier misconception test and eleven studies whose purpose was to determine learners' misconceptions using a four-tier diagnostic test without test development process in physics education between 2010 and 2022 inclusive with respect to their publication type, the publication year, the number of authors, and number of pages and whether the test was modified or not. General test information such as the physics topic that it examined, the number of misconceptions which were targeted, misconception criteria, validity, and reliability techniques and the number of items were also collected. Indonesia is the country where most of the studies were carried out. Surprisingly, it is found that there is no common agreement about misconception criteria in the studies. Also, it is seen that some important information about test development stages was not specified in many studies.

This study aimed to determine the levels of pre-service teachers' nature of science (NOS) knowledge, assess their pseudo-scientific beliefs, and examine the relationship between aspects of their NOS knowledge and these beliefs. It also aimed to determine whether NOS knowledge and pseudo-scientific beliefs depended on the discipline and gender. A survey method was conducted in this study. Data were collected from 215 pre-service teachers who are being educated in different fields in a state university. Two different five-point Likert scales were applied. Scale 1, which has three factors, measured pseudo-scientific beliefs, while Scale 2, which has seven factors, measured NOS knowledge. As a result, pre-service teachers' NOS knowledge was found to be inadequate and their pseudoscientific beliefs were excessive. All factors of Scale 1 were positively correlated with each other, and they were correlated with some components of NOS knowledge. Significant differences were found between disciplines in the analysis of the factors of Scale 2; however, no significant differences were found between genders.

The purpose of this study is to consider Superman's acts against impulse-momentum and conservation of momentum principles. Superheroes as fantasy fiction characters attract the attention of not only children and teenagers but also adults. Superheroes can be useful in explaining a phenomenon, as well as overcoming conceptual difficulties that may occur in students. Superman is a superhero who often challenges the impulse-momentum principle and conservation of momentum. Therefore, he may be the best superhero to use when talking about momentum. This context gives educators an opportunity to motivate students.

The aim of this study is to identify the opinions of pre-service physics teachers about the difficulties in introductory quantum physics topics. In this study conducted with twenty-five pre-service physics teachers, the case study method was used. The participants were interviewed about introductory quantum physics topics. The interviews were coded using content analysis and were divided into different categories. In this way, we tried to reveal the opinions of pre-service physics teachers about the difficulties of these topics. In conclusion, it can be said that the participants had the most difficulty in transition from classical physics to quantum physics. This is especially evident in quantum physics topics that require a different understanding such as black body radiation, wave-particle structure of light and the uncertainty principle. It was also found that the participants had no difficulties in terms of mathematical calculations, and that approaches based on visualizing the topic were received positively.

This study aims to make a thematic classification of possible misconceptions about solid friction by reviewing papers in the literature which include conceptual difficulties about friction; in this way, the study contributes to the literature. The study's scope was limited to the dry friction that occurs with the interaction of two solid objects, as this is included in several curricula. Papers in the literature addressing the conceptual difficulties associated with friction were reviewed. Hence, 42 primary data sources (papers) accessed from various databases were subjected to content analysis. Possible misconceptions about friction were determined by the data collection techniques or tools of the study, the educational levels of the sample, and the countries in which they took place. At the end of the study, a list of possible misconceptions about solid friction were classified and listed under four themes: "definition and existence," "direction," "type and magnitude," and "effects of friction." Most of the possible misconceptions are in the type and magnitude theme and the least were in the direction theme. But friction is always opposite to the direction of the motion as a possible misconception was detected in the highest number of papers. Related to this, the possible misconception that friction prevents movement was frequently encountered. It was also found that both the distinction between sliding and rolling friction and kinetic and static friction was often ignored. In addition, some of the possible misconceptions were found to be similar regardless of country, culture, or education system, as in the previous literature. One of the results of the study is that possible misconceptions are not only held by the students but also held by teachers and preservice teachers. In this respect, the results of the study are also considerable in terms of the direction of teachers in in-service training studies.

The aim of this study is to identify the reasons why pre-service physics teachers have difficulties related to special relativity topics. In this study conducted with 25 pre-service physics teachers, the case study method, which is a qualitative research method, was used. Interviews were held with the participants about their reasons for difficulties in understanding special relativity topics. We used content analysis with the interview data and created eight categories. By doing so, we tried to identify the causes of difficulties experienced by the participants. As a result, it can be said that students are biased against relativity subjects and consider them to be difficult. Although the students found the subject interesting, problems such as mathematical difficulties, problems related to determining the reference system and transition from classical physics to relativistic physics made the learning process difficult for them. Additionally, we identified positive and negative opinions about the teaching method.

The purpose of this research is to determine the effects of different laboratory approaches on students' understanding of wave concepts. For this purpose, three experiments and experiment instructions have been designed for each of the three approaches (verification, hypothesis testing, and the 5E laboratory approach). Quantitative aspects of the research are based on a grouped semi-empirical model. A random sampling has been done to develop the basic concepts of a waves test (BCWT), a multiple-choice test that was used in the quantitative part of the research. However, participants (physics teacher candidates) of the main study have been selected using purposeful sampling for the purposes of the qualitative research. At the same time, students have been specially chosen from students who have not taken the theoretical course titled 'Vibrations and Waves' and laboratory lecture titled 'Vibrations and Waves Laboratory'. BCWT pre-test and post-test results, as well as interviews with students and the experiment reports of the students, were used as data resources. Despite the time and effort spent, the laboratory approaches that we utilized did not provide convincing results.

The purpose of this study is to examine the process of conceptual change in which the heat concept has gone through in time and provide an analytical assessment. To this end, problem-based learning groups were formed with 13 sophomore university students. One of these students was selected and interviewed. The interviews were examined using the content analysis method, which is one of the qualitative analysis' methods. Grounded theory techniques were used to interpret the data. According to the results, the student had difficulties in distinguishing between heat and thermal energy. The student explained what heat is as "a type of energy stored in a matter" and how heat comes out as "a result of frictions which occur while particles of a matter collide with each other." It is seen that the opinions of the student are affected by common misconceptions such as "heat loss" or "the energy lost during friction turns into heat." The opinions of the student are disconnected pieces of information and her opinions change constantly throughout the process. At the end of the process, the student managed to differentiate the heat concept and thermal energy concept. In addition, she corrected her conception of heat in line with scientific theories.

Students may have some confusion understanding certain physical concepts and principles because of their abstract nature. Using analogies is one of the useful methods to help them more easily grasp abstract concepts to promote conceptual understanding. Bilaloglu classified analogies in four groups: (a) simple analogies, (b) storified analogies, (c) gamified analogies, and (d) analogies made with painting. In storified analogies, it is attempted to teach an event, phenomenon, concept, or principle by using an oral or written story.

The aim of this study is to draw attention to the informal education aspect of the movies shown and to determine the awareness levels about physics in movies of a small group composed of university students. That is an evaluation had been made among the films dealing explicitly with the basic content of physics, except for science fiction movies, and two films that attracted great attention in the process notation were chosen. In this study, the sample group was composed of six students who continue physics education at university and have high academic success levels. At the beginning of the sessions, the group had been informed about the aim and process of the study. The movies, which were watched by researchers and scientifically mistaken scenes had been determined beforehand, were then watched in two different sessions together with the student group. In each session, students were made to discuss the scenes dealing with physics and whether they were consistent or contrary to physics rules. The scenes in question were stopped upon the demands of students, the time interval of the scene was noted, and the discussions were recorded by a voice recorder. The researchers did not intervene in the discussions directly, but only canalised students to make the discussions deeper when needed. Through this study, it was realised that the awareness level about physics in movies of the students was quite high. This study is highly important in stressing the informal education mission of the movies and students' critical questioning of the scientific correctness in the films. This result points out that while writing a scenario, scriptwriters should take a serious academic consultancy service.