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Synthesis of Al and In dual-doped CuO nanostructures via SILAR method: Structural, optical and electrical properties
Get PDFIn this article, we investigated the doping characteristics of Al-doped CuO (ACO), and Al/In co-doped CuO (AICO) thin films, which were synthesized on glass substrates, via the solution-based successive ionic layer adsorption and reaction (SILAR) technique. The surface morphological, chemical composition, structural, optical, and electrical properties of the nanocrystalline films were characterized by Field Emission Scanning Electron Microscopy (FE-SEM), Energy dispersive X-ray spectroscopy (EDX), X-ray diffraction (XRD), Fourier-transform Infrared Spectroscopy (FTIR), Ultraviolet–visible (UV–vis.) spectrophotometry, and Transmission Line Method (TLM), respectively. Surface morphology studies exhibited that a decrease in the films' thickness caused an increment in the optical transmittance. XRD patterns displayed that the obtained samples were polycrystalline and crystallized in a bare CuO monoclinic structure. FTIR studies of the CuO samples displayed that Al and In co-doping influenced the forms and the violence of the absorption bands. The optical bandgap energy of bare CuO was determined to increase from 1.45 to 1.78 eV as a result of the co-doping. The substitution of In displayed in the irregularity of the morphology, owing to its wide ionic radius, which caused an increase in band gap energy and a decrease in resistance. The co-doping of Al and In is hence anticipated to ensure an extensive range of physical and optical properties of nanostructured metal oxide samples for a variety of technological applications. © 2022 Elsevier B.V
Learning from expert or own practice: reflectively editing video cases for professional development
Get PDFThis research aimed to investigate how the video editing process professionally affected preservice teachers' reflection levels and whether it differed by the type of in-class teaching experiences (their own and expert teacher experiences). The editing procedure of video cases means selecting and combining parts from an entire recorded in-class teaching experience and adding reflective thinking on actions. Seven participants took part in the research process during a semester, with three-cycle of the video case editing procedures being applied separately to two different research groups. Both inductive and deductive content analysis procedures were applied in a total of 21 video cases edited by PTs. By editing in-class teaching experiences, PTs could deeply analyse the events and transform their reflections on the contextual features. The process facilitated PTs' professional development by identifying, noticing, and reflecting on in-class teaching experiences. PTs learned to analyse their experiences by using different types of perspectives. PTs could deeply analyse the events and transform their reflections on the contextual features. Contrary to the difficulties for PTs' reflection-in-action, the process of editing in-class teaching experiences expanded their reflection-on-action opportunities
Sex-linked variations in the sagittal otolith biometry of Nemipterus randalli (Russell, 1986) from the eastern Mediterranean Sea
Get PDFFew studies have been conducted on the sagittal otolith shape and morphometry of Nemipterus randalli, and none of these studies has examined the effect of sexual dimorphism on the otolith morphology of this species, therefore this study aimed to contribute to knowledge about the otolith morphology of N. randalli, an invasive fish species for the Mediterranean Sea. For this purpose, a total of 132 samples (51 female and 81 male) were obtained from İskenderun Bay with the help of commercial fishermen in November 2018. Relationships between otolith measurements and fish size were determined. Shape indices and elliptic Fourier coefficients were calculated. Significant differences were detected between males and females in all analysis. The sexes were separated from each other using both shape indices and elliptic Fourier coefficients. However, shape analysis was more effective in distinguishing sexes than traditional morphometric analysis. Asymmetry in the otolith morphology of sexes has been attributed to differences in the growth and sexual maturity of male and female fish. The results of this study indicated that sexual dimorphism in Nemipterus randalli was also reflected in the otolith morphology. © 2022 Fisheries Society of the British Isles
Pain relief effects of aromatherapy with rose oil (Rosa damascena Mill.) inhalation in patients with primary dysmenorrhea: A randomized controlled clinical trial
Get PDFIntroduction: Pharmacological agents, such as non-steroidal anti-inflammatory drugs (NSAIDs), and non -pharmacological techniques, including acupuncture and aromatherapy, are commonly used for the manage-ment of abdominal pain in patients with primary dysmenorrhea. Essential rose oil obtained from Rosa Mill (RDM) is often used in aromatherapy for the treatment of many diseases. This study was aimed at using visual analog scale (VAS) pain scores and total analgesic consumption to evaluate the effects of adding RDM essential oil inhalation to the standard treatment (NSAID) of primary dysmenorrhea. Methods: In this prospective randomized controlled clinical trial, 86 patients were randomized into groups R and C. The patients in group C only used standard analgesics (50 mg diclofenac sodium enteric film tablets). In group R, patients used both standard analgesics and RDM inhalation aromatherapy. A 10-point VAS was used to determine the pain values of the patients and was recorded as pre-treatment (VAS-0) and post-treatment (VAS -60). The analgesic consumption by the patients was recorded for 24 h. Results: In both groups, there was a significant decrease in VAS scores after treatment. The VAS-60 scores in group R were significantly lower than those in group C (2 [1-4] vs. 5 [2-5], respectively; P = 0.013). Analgesic consumption in group R was significantly lower than in group C (50 [50-100] mg vs. 100 [50-100] mg, respectively; p = 0.003). Conclusion: Inhalational rose oil aromatherapy is a good self-treatment option for primary dysmenorrhea
Stability of acidified milk drinks: Comparison of high hydrostatic pressure (HHP) and thermal treatments
Get PDFThere is a search for effective stabiliser activity and alternative pasteurisation techniques for acidified milk drinks (AMD). In the present study, AMD were prepared at three different pH (4.0, 4.5 and 5.0) and high methoxyl pectin (HMP) levels (0.2, 0.5 and 0.8%) by thermal (75 °C, 15 min) and high hydrostatic pressure (HHP) (100, 300 and 500 MPa, 5 min) treatments. To achieve minimum steric stability, 0.5% HMP was required. HMP at 0.5%, pH 4.0 and 4.5, produced high protein solubility (60–70%), low storage sedimentation (10–15%) and mean particle size values in the range of 1.70–3.00 μm for all samples. Heat treatment induced lower particle size variation than HHP treatment. Heat-treated samples also showed lower Turbiscan stability index (TSI) values and smaller delta backscattering (ΔBS) variations. Nonetheless, HHP could replace heat treatment at 0.5% HMP concentration and pH 4.0–4.5. © 2022 Elsevier Lt
Thermal performance investigation of double pipe heat exchanger embedded with extended surfaces using nanofluid technique as enhancement
Get PDFIn the present work, a numerical investigation of heat transfer enhancement in a “double pipe heat exchanger” embedded with an extended surface on the inner tube's outer surface with the addition of “Alumina nanofluid” has been carried out. Through the annuli, water with varying mass flow rates (0.03–0.07 kg/s) and hot de-ionized water with varying Reynolds numbers (250–2500) flows, while hot de-ionized water flows through the inner tube. One type of nanoparticle (Al2O3) having volume concentrations (1%, 3%, and 5%) was used during simulation. Numerical analysis was performed using Computational Fluid dynamics, and the Solid works was used to generate the model. A Semi-Implicit Method for Pressure Linked Equations technique was used to solve the governing equations and discretized using the finite volume method. The simulated results show that the use of a finned tube heat exchanger resulted in an improvement ratio between (2.3) and (3.1). The coefficient of convective heat transfer increased numerically as the volume concentration and Reynolds number increased. The heat transfer coefficient and thermal conductivity rise by 20% and 4.7%, respectively, at a volume concentration of 5%. © 2023 The Author
Impact of Childhood Trauma and Adult Separation Anxiety Disorder on Quality of Life in Individuals with Schizophrenia
No full textBackground: Childhood trauma and anxiety disorders are common in individuals with schizophrenia. This study aimed to investigate the effects of childhood trauma and adult separation anxiety disorder on the quality of life of individuals with schizophrenia. Methods: This cross-sectional study included 111 individuals with schizophrenia and 85 control subjects. The separation anxiety symptom inventory (SASI), adult separation anxiety questionnaire (ASAQ), Positive and Negative Syndrome Scale (PANSS), childhood trauma questionnaire (CTQ), and World Health Organization quality of life questionnaire (WHOQoL-BREF) were administered to the participants. Results: More individuals with schizophrenia than control subjects were unemployed and single (p<0.05). Individuals with schizo-phrenia scored significantly higher on the SASI, ASAQ, and CTQ (p<0.05), whereas the control subjects scored significantly higher on the WHOQoL-BREF (p<0.05). ASAQ scores had mild positive correlations with total PANSS and PANSS subscale scores, and moderate positive correlations with total CTQ, CTQ emotional subscale scores, and CTQ physical abuse subscale scores. A negative moderate correlation was found between ASAQ and total WHOQoL-BREF scores. Mediation analysis revealed that CTQ scores significantly affected total WHOQoL-BREF and ASAQ scores. The model pathway for ASAQ scores showed a significant direct and indirect effect of CTQ on the total WHOQoL-BREF scores. Conclusion: Childhood trauma predicts adult separation anxiety disorder, which partially mediates the impact of childhood trauma on quality of life in individuals with schizophrenia. Therapeutic interventions for adult separation anxiety disorder in individuals with schizophrenia and a history of childhood trauma may help increase their quality of life
Cyber İdentity: Determining the Meaning-Making Process of University Students in Terms of the Phenomenological Perspective
No full textThe aim of this research is to investigate the perceptions of university students of the cyber identity they experience on a day-to-day basis, especially following the pandemic lockdown. The research uses a basic interpretive research design with a qualitative, and particularly focuses on the phenomenological perspective. The data was gathered from 155 university students from 18 universities in Turkey and was analysed through the use of the inductive content analysis method. The meaning-creation process of students leads them to view cyber identity as a process which includes the personal characteristics and interpersonal interaction that takes place in any kind of digital platform. The findings from the study are categorized into two main themes: structural conditions and inner conditions. These themes consist of issues related to process, technology, personal factors, and other issues. In this study, cyber identity is considered to refer to a new way of relating to the technological world. © 2023 International Council for Educational Media
First-Principles Study on Structural, Electronic, and Elastic Properties of Srfcl
No full textStructural, electronic, and elastic properties of SrFCl, one of the alkaline-earth fluorohalides, under high pressure were investigated using the Siesta Package Program within the framework of density functional theory. SrFCl crystallizes in a tetragonal matlockite type structure belonging to the space group P4/nmm at ambient conditions. The phase transformation from a tetragonal matlockite type structure to an orthorhombic type structure belonging to the space group Pmmn occurred in the presence of gradually increasing simulation pressure. The values of lattice parameters, shear modulus, Young’s modulus, and bulk modulus, for the obtained structures of SrFCl were investigated. The transition pressure value was calculated by total energy and enthalpy calculations. The electronic properties of SrFCl were also calculated. Band gaps of 6.52 eV for the P4/nmm phase and 3.55 eV for the Pmmn phase were obtained. Thus, it was concluded that the P4/nmm and Pmmn phases of SrFCl have an insulator and a semiconductor character, respectively. In addition to these studies, the mechanical stability of SrFCl was investigated by calculating elastic constants. As a result of this calculation, both phases of SrFCl were mechanically stable. © 2023, Indian Association for the Cultivation of Science
Investıgatıon Of The Relatıonshıp Between Balance And Body Awareness Wıth Paın And Functıonal Capacıty In Women Wıth Fıbromyalgıa
Get PDFIn this study, it was aimed to examine the relationship between balance and body awareness
with pain and functional capacity in female patients diagnosed with fibromyalgia and to
compare them with healthy female. The research was conducted between 01.11.2022 -
01.02.2023. Individuals who applied to the Kırşehir Ahi Evran University Training and
Research Hospital Physical Therapy and Rehabilitation Department and met the inclusion
criteria were included in the study. Ethics committee permission was obtained before the
study. A total of 66 participants who met the inclusion criteria were informed about the
purpose of the study. Written informed consent form was obtained from the participants. 33
female patients diagnosed according to 1990 ACR diagnostic criteria and 33 healthy controls
were included in the study. Pain was evaluated with Visual Analogue Scale (VAS) and
algometer. Functional capacity and mobility was evaluated with the 6-minute walk test
(6MWT) and the Timed Up and Go test (TUG). The impact of the fibromyalgia was assessed
with the Fibromyalgia Impact Questionnaire (FIA). Body awareness was evaluated with
Body Awareness Questionnaire (BAQ). Balance was evaluated with the Biodex Balance
System (BBS).
The data obtained from the research were analyzed with the independent sample t-test. The
mean age of the control group was 39±15.84 years, while the mean age of the FM group was
41±13.10 years. When the values of the FM group and the control group were compared, a
statistically significant difference was found between TUG, 6MWT, FIQ score and in some
pain variables, these are as follows occiput, supraspinatus, gluteal, trochanter, cervical,
second costa, lateral epicondyle and knee on both sides (p<0.05). These differences were in
favor of the control group. In addition, a moderately positive and significant relationship was
found between functional capacity and balance in the FM group (r= 0,434, p<0.05).
Moreover, a statistically significant relationship was found between pain in 16 trigger points
except right and left trapezius and balance (p<0.05). In conclusion, it was determined that
the 6 MWT score, TUG score and pain values were better in healthy female than female with
FM. In conclusion, we suggest that balance and body awareness, pain and functional
capacity should be assessed together when evaluating FM