Manisa Celal Bayar Üniversitesi Akademik Arşiv Sistemi
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Modification of friction and wear properties of PET membrane fabrics by MEVVA ion implantation
No full textPolyethylene terephthalate (PET) membrane fabrics were modified by Ti, W, Ti + N, Cr + N and C + N implantations using a metal vapor vacuum arc (MEVVA) source at an accelerating voltage of 30 kV with doses ranging from 1 x 10(15) to 5 x 10(16) ions cm(-2) in TUBITAK Textile Research Center in Izmir. After implantation, changes in the mechanical properties of the samples were investigated. The results indicated that friction coefficient and wear loss values decreased significantly. This decrease depended on the used ion species and the doses. The surface morphologies of samples were examined by SEM and AFM. The changes in chemical structure were observed by IR spectra. (c) 2007 Elsevier B.V. All rights reserved
Epidemiological profile of onychomycosis in the elderly living in the nursing homes
No full textIntroduction: Few data is available about the prevalence and the causative microorganisms of onychomycosis in the elderly. The aim of this study was to determine the prevalence and types of onychomycosis in the elderly people living in the nursing homes and to determine the responsible fungal agents. Methods: Elderly people living in nursing homes were examined for onychomycosis. Nails with color and structure changes were suspected of onychomycosis. Scraping materials were evaluated by direct KOH examination and fungal cultures were performed. Results: Totally, 214 elderly persons (59 female, 155 male) from nursing homes were studied. Onychomycosis was suspected clinically in 102 cases and scraping materials were obtained from 122 nails. Clinical types of onyhomycosis were distal subungual in 87, proximal subungual in 21 and white superficial in 14 cases. Fungal spores were seen in 81 (37.8%) samples (3 hand nails, 78 toenails) with direct KOH examination and fungal culture was positive in 54 (25.2%) (3 hand nails, 51 toenails) of them. Trichophyton rubrum was the most frequently isolated fungus (75.9%) followed by Candida glabrata (12.9%). Conclusions: In the elderly, onychomycosis is more common than the general population. However causative fungi are similar; dermatophytes are the most common causative organisms followed by yeasts. (C) 2013 Elsevier Masson SAS and European Union Geriatric Medicine Society. All rights reserved
Thermoluminescence glow curve analysis and kinetic parameters of Eu doped Li2MoO4 ceramic phosphors
No full textLiMoO4: x Eu ceramic phosphors with x = 0.5, 1, 2, 3, 5, and 7 mol% were synthesized using a gel combustion method. X-ray diffraction (XRD) measurements confirmed a rhombohedral structure (space group R-3) of synthesized compounds. Following irradiation with 50 Gy beta dose, the sample doped with 5 mol% Eu exhibited the highest integrated thermoluminescence (TL) intensity. In order to evaluate dose-response, samples were irradiated with beta radiation for 10-1000 Gy. TL intensity with 1000 Gy dose without saturation yielded the highest integrated value. Different methods were employed to determine the number of peaks, the trap structure, and the kinetic parameters of the thermoluminescence glow curve of Eu doped Li2MoO4: the Hoogenstraaten method, the Booth-Bohun-Parfianovitch method, the initial rise method (IR), combined with the T-M-T-stop experiment, various heating rates (VHR), and glow curve fitting with two different software packages. Based on the glow curve deconvolution obtained using both software packages, the component TL glow peaks present in the complex glow curve are composed of well-isolated nine overlapping glow peaks. Two software packages have shown quite similar activation energies and frequency factors
A new thiol-based oxidized polyethylene adsorbent for heavy metal ions removal from aqueous solutions
No full textIn the present study, it has been synthesized a new polymer, OXPESH (oxidized polyethylene functionalized with thiol groups), based on commercially used OXPE (oxidized polyethylene) for possible uses in the removal of heavy metals. Thiol-based oxidized polyethylene was successfully obtained by the esterification process. The synthesized polymeric material was employed as a possible adsorbent for the removal of heavy metal ions from aqueous solutions. Different techniques (H-1-NMR, FTIR, ICP-MS, (Elemental Analysis), XPS, SEM-EDX, TGA/DTG) were used to characterize the physical and chemical properties of the obtained adsorbent. it was observed that the optimum pH values for the adsorption capacity and removal efficiency of heavy metal ions were 6-8. It was observed that the adsorbent removed the best Ag+ > Cr3 + > Pb2+ > Al3+ > Cd2+ > Ni2+ > Cu2+ from the aqueous solution. As a result, thiol-based oxidized polyethylene has been demonstrated to be an effective sorbent for the removal of heavy metal ions from aqueous solution, indicating its potential relation with water improvement
Novel Sol-Gel Inks for the Direct Writing of SiO2-Based Bioactive Glass Scaffolds for Tissue Engineering Applications
No full textIn this study, silicate-based, three-dimensional bioactive glass scaffolds were produced for the first time with innovative sol-gel ink-based robocasting, and their structural and morphological characterizations were performed. Additionally their, in vitro, bioactivity in simulated body fluid and phosphate-buffered saline at 37 °C was studied under static conditions. For this purpose, bare and rare earth element-containing (3 wt% Eu3+, Gd3+) silicate-based 13–93 bioactive glass gels were prepared at room temperature. Then, a hybrid gel system containing a mixture of bioactive glass gel and a temperature-sensitive hydrogel (polyethylene oxide-polypropylene oxide-polyethylene oxide tri-block-copolymer) at different ratios was used to obtain multilayered structures. After printing, the dried gel structures were calcined at 675 °C for 1 h in an air atmosphere. The results showed that the patterned, multilayered, macroporous bioactive glass scaffolds can be successfully produced using the method developed in the study. It has been understood that the structures prepared in this way can be made in much finer filament dimensions than the colloidal-based robocasting process containing bioactive glass particles. It was also shown that hydroxyapatite formation occurred on the surface of the bioactive glass scaffolds, which were kept in physiological fluids. The general results indicated that the sol-gel ink-based robocasting technique gives more promising results in preparing bioactive glass scaffolds with complex geometry than conventional colloidal ink-based robocasting. The incorporation of the studied rare earth elements was not detrimental to the printing process of the bioactive glass scaffolds. © The Author(s), under exclusive licence to Springer Nature B.V. 2025
Effect of mobile phone app-based training on the quality of life for women with breast cancer
No full textPurpose: The study purpose was to determine the effects on quality of life (QoL) of a mobile phone app-based training for supportive care of women with breast cancer who were using adjuvant endocrine hormonal therapy. Methods: The study is based on a randomized pre-post test design. Participants were randomly assigned to either a control group that received routine care or an intervention group that received routine care plus access to the mobile phone app-based training support for 12 weeks. QoL and symptom distress were measured before intervention (T0), and after 12 weeks (T1) of intervention. This study is the application of two modality combinations: the mobile app-based patient education (1) and web-based management application (2). The mobile app-based training also provided basic information about breast cancer, symptom diary and lifestyle recommendations (adequate and balanced nutrition, regular physical activity, deal with stress effectively). Results: QoL of the treatment group after intervention increased and distress level was lower compared to the control group; these results were statistically significant. The majority of the patients reported that the mobile application was informative and useful. Conclusions: This demonstrated that the mobile app is an effective intervention for supportive care in women with breast cancer. The mobile app-based training, which is an innovative intervention, is recommended as a supportive care initiative for women with breast cancer
Understanding Pain Patterns in Medication Overuse Headache: Insights from Turkiye's Real-Life Experience
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The effect of music therapy during colonoscopy on pain, anxiety and patient comfort: A randomized controlled trial
No full textBackground: and purpose: This study aimed to determine the effect of music therapy on pain, anxiety, and patient comfort during colonoscopy. Materials and methods: This is a randomized, controlled, intervention study, which included 112 patients that underwent colonoscopy. The patients were randomized into the intervention group (n = 56) that was given 30-minute music therapy during the colonoscopy and the control group (n = 56) without any intervention other than routine nursing care. The data were collected using an information and observation form, the Visual Analog Scale (VAS) and the Spielberger State-Trait Anxiety Inventory. Results: The pain and anxiety scores were lower in the intervention group whereas comfort score was higher than control group (p < 0.05). The pain and anxiety levels of the patients in the intervention group decreased after the colonoscopy and their comfort levels increased. Conclusions: The music therapy reduced pain and anxiety, increased comfort during colonoscopy
