Interaction of Alginate/Copper System on Cotton and Bamboo Fabrics: The Effect on Antimicrobial Activity and Thermophysiological Comfort Properties

Antimicrobialagent treated materials have been widely used clinically as medical devices and articles, in which the active substances, such as antimicrobial molecules, are present on or in the matrix of the surface of the devices and articles.This study aims to treat a selection of fabrics with alginate/copper, and then determine the treated fabrics’antimicrobial activity against two common Gram-positive and Gram-negative bacteria. It is also aimed to analyse and evaluate the thermophysiological properties of the treated fabrics. Cotton, organic cotton and bamboo woven fabrics were employed. The fabrics were applied in 1 %, 3 % and 5 %w/v copper solutions andsubsequentlyspecimens were subjected to 10 min and 20 min ultrasonic energy treatment. The results clearly demonstrated that the cotton and organic cotton fabrics were successfully treatedwith the alginate/copper and the treated fabrics showed considerable zone of inhibitions. The bamboo fabric did not appear to bond effectively with the copper alginate, andas the result,the fabrics did not display any improved bacterial protection against the chosen bacteria. In fact the bamboo fabric lost its natural antimicrobialproperties after the alginate and copper treatment.The thermophysiological comfort properties of the treated cotton fabrics changed significantly; on the other hand, the treated bamboo fabrics were not affected by the copper treatment.  DOI: http://dx.doi.org/10.5755/j01.ms.19.3.1217</p

Investigation of the Relationship Between Teachers’ Life Satisfaction and Career Satisfaction

DergiPark: 806249tredIn the current study, it is aimed to determine the extent to which career satisfaction on teachers predict their life satisfaction. For this purpose, the relational screening model was used in the research. The study was conducted on 208 teachers working in schools affiliated to the Ministry of National Education located in the central district of the city of Burdur the academic year of 2020-2021. The mean age of the study group is 34.13. The data of the study were collected by the personal information form developed by the researchers, the Life Satisfaction Scale adapted to Turkish by Dağlı ve Baysal (2016) and the Career Satisfaction Scale adapted to Turkish by Çamur (2019). In the analysis of the collected data, percentage, frequency, arithmetic mean, standard deviation were used; In addition, pearson correlation coefficient and simple linear regression analysis were used to determine the relationship between variables. For all the statistical analyses, SPSS 22.0 program package was used and the significance level was set to be .05. As a result of the research, it was found that the life satisfaction levels of teachers are positively and significantly predicted by their career satisfaction. Findings of the study were discussed in light of the literature.Bu araştırmada, öğretmenlerin kariyer tatminlerinin yaşam doyumlarını ne derece yordandığının belirlenmesi amaçlanmıştır. Bu amaç doğrultusunda, çalışmada ilişkisel tarama modeli kullanılmıştır. Araştırma, 2020-2021 eğitim-öğretim yılında Burdur ilinin Merkez ilçesinde yer alan Milli Eğitim Bakanlığına bağlı okullarda çalışmakta olan 208 öğretmen üzerinde gerçekleştirilmiştir. Çalışma grubunun yaş ortalaması 34.13’tür. Araştırmada veriler; araştırmacıların geliştirdiği kişisel bilgi formu, Dağlı ve Baysal (2016) tarafından Türk kültürüne uyarlanan Yaşam Doyumu Ölçeği ve Çamur (2019) tarafından Türk kültürüne uyarlanan Kariyer Tatmini Ölçeği ile toplanmıştır. Verilerin analizinde yüzde, frekans, aritmetik ortalama, standart sapma kullanılmış olup; değişkenlerin arasındaki ilişkinin saptanması için ise pearson korelasyon katsayısı ile basit doğrusal regresyon analizi kullanılmıştır. Tüm bu istatistiksel analizlerde SPSS 22.0 programı kullanılmış olup, anlamlılık düzeyi olarak .05 alınmıştır. Araştırma sonucunda, öğretmenlerin yaşam doyumu düzeylerinin kariyer tatminleri tarafından pozitif yönde anlamlı bir şekilde yordandığı bulgusuna ulaşılmıştır. Çalışma bulguları ilgili alanyazın ışığında tartışılmıştır

Polylactic acid and lanolin based nanofibrous structures for wound management application

105-115Polylactic acid (PLA) polymer and wool oil (lanolin) have been used to develop nanostructures for wound dressing management. Lanolin has been extracted from raw wool surfaces and used as a by-product in wide range of pharmaceutical areas. Different solutions with varying concentration of the PLA/lanolin and sodium alginate/lanolin solutions have been prepared and then nanostructures are developed using electrospinning method. The developed structures are aimed to use as smart wound dressings. During the production stage, the parameters of the electrospinning process have been changed to develop the optimum structures. The effect of solution concentrations on the applied voltage and the distance between the pipette tip and the collector is highlighted. The spinnability of lanolin is the main objectives of this study and the PLA/lanolin nanostructures are designed and manufactured successfully. The essential test methods have been performed to measure the usability of the produced materials as wound dressings. These are liquid absorption capacity, horizontal/vertical wicking, SEM, degradation, pH, antibacterial assay, and tensile properties. From the tested parameters, it is obviously found that the use of PLA/lanolin as wound dressing is suitable according to initial in vitro test results

Polylactic acid and lanolin based nanofibrous structures for wound management application

Polylactic acid (PLA) polymer and wool oil (lanolin) have been used to develop nanostructures for wound dressing management. Lanolin has been extracted from raw wool surfaces and used as a by-product in wide range of pharmaceutical areas. Different solutions with varying concentration of the PLA/lanolin and sodium alginate/lanolin solutions have been prepared and then nanostructures are developed using electrospinning method. The developed structures are aimed to use as smart wound dressings. During the production stage, the parameters of the electrospinning process have been changed to develop the optimum structures. The effect of solution concentrations on the applied voltage and the distance between the pipette tip and the collector is highlighted. The spinnability of lanolin is the main objectives of this study and the PLA/lanolin nanostructures are designed and manufactured successfully. The essential test methods have been performed to measure the usability of the produced materials as wound dressings. These are liquid absorption capacity, horizontal/vertical wicking, SEM, degradation, pH, antibacterial assay, and tensile properties. From the tested parameters, it is obviously found that the use of PLA/lanolin as wound dressing is suitable according to initial in vitro test results

A Rare Cause of Secondary Hypertension: Nutcracker Syndrome

Left renal vein entrapment syndrome also known as nutcracker syndrome (NCS) is a vascular anomaly that occurs due to compression of the left renal vein from the outside, causing reduced left renal venous blood flow and thus venous congestion. This may be either asymptomatic or present with various clinical scenarios but is rarely associated with hypertension (HT). In this paper, we report an NCS case diagnosed in a young female patient who presented with HT

A scale development study for the 21st Century time traps: The scale for time traps of the modern age

Bu araştırmanın amacı, beliren yetişkinlerin 21. yüzyılın zaman tuzaklarına ne düzeyde yakalandıklarını belirlemek üzere geliştirilen Modern Çağın Zaman Tuzakları Ölçeğinin (MÇZTÖ) geçerlik ve güvenirlik çalışmasını yapmaktır. Araştırmanın çalışma grubu, 2021-2022 eğitim öğretim yılında bir devlet üniversitesinde öğrenim gören ve uygun örneklem yöntemiyle seçilen toplam 818 üniversite öğrencisinden (456 kadın ve 362 erkek) oluşmaktadır. Ölçeğin faktör yapısı açımlayıcı ve doğrulayıcı faktör analizi ile incelenmiş ve toplam varyansın %41.64’ünü açıklayan tek boyutlu bir yapı elde edilmiştir. Bu yapının model uyumunun iyi düzeyde olduğu bulunmuştur (χ2 /sd=2.51, RMSEA=.067, SRMR=.062, NNFI=.91, CFI=.93). Ölçüt bağıntılı geçerlik çalışmalarında ise MÇZTÖ’nün, Akıllı Telefon Bağımlılığı Ölçeği Kısa Formu ile pozitif yönde yüksek düzeyde (.728); Öz-Disiplin Ölçeği ile negatif yönde orta düzeyde (-.414) ilişkili olduğu sonucuna ulaşılmıştır. Ölçeğin güvenirliğini belirlemek için iç tutarlılık (.815), iki yarı (.774) ve test tekrar test (.822) güvenirlik analizleri yapılmış ve ölçeğin güvenilir olduğuna karar vermek için kabul edilebilir referans değerlere ulaşılmıştır. Araştırmadan elde edilen bulgular doğrultusunda bu çalışma kapsamında geliştirilmiş olan MÇZTÖ’nün, beliren yetişkinlerin zaman tuzaklarına yakalanma düzeylerini belirleme sürecinde kullanılabilecek, geçerliği ve güvenirliği olan bir ölçme aracı olduğu sonucuna ulaşılmıştırThe purpose of the current study is to conduct the validity and reliability studies of the Time Traps Scale of the Modern Age (TTSMA), which was developed to determine at what level emerging adults are caught in the time traps of the 21st century. The study group of the current research is composed of a total of 818 university students (456 females and 362 males) studying at a state university in the 2021-2022 academic year and selected through the convenience sampling method. The factor structure of the scale was investigated with exploratory and confirmatory factor analysis and a one-dimensional construct explaining 41.64% of the total variance was obtained and the fit of this construct was found to be good (χ2 /sd=2.51, RMSEA=.067, SRMR=.062, NNFI=.91, CFI=.93). In criterion-related validity studies, the TTSMA was positively high (.728) with the Smartphone Addiction Scale - Short Version; It was concluded that there was a moderate (-.414) negative correlation with the Self-Discipline Scale. In order to determine the reliability of the scale, internal consistency (.815), split-half (.774) and test-retest (.822) reliability analyses were run and acceptable values showing that the scale is reliable were obtained. On the basis of the findings of the current study, it was concluded that the TTSMA is a reliable and valid scale that can be used in the process of determining the time traps level of emerging adults

A troublesome lesion of the larynx: Lobular capillary hemangioma

Lobular capillary hemangioma (LCH), which is also known as pyojenic granuloma, is a benign and vascular lesion of the skin and mucous membranes and mostly seen in females between 20-40 years of age. Although the etiology of the condition is still unknown, some conditions, such as trauma, poor oral hygiene, viral or fungal infections, and periodontal and gingival diseases are considered to be related to the formation of LCH. It mostly seems in cheek and oral cavity in head and neck region. Larynx localization of LCH is very rare. We present a case of LCH in a 47-year-old male and review the literature

THERMAL CONDUCTIVITY OF CHICKEN FEATHER AND PUMICE STONE REINFORCED THERMOPLASTIC COMPOSITE MATERIALS

Natural fibres are green materials and have some advantages i.e. are renewable, reasonably cheap, biodegradable and ecologically freindly. Conversely, composites made of natural fibers can be used as a reinforcement material either long or short forms or recycled fibres. In the production of this NFC materials are made from a combination of natural fibers and polymeric matrice. In this study, thermoplastic-based polypropylene chips composites were produced by making use of pumice stone with different grain structures and chicken feather as reinforcement. In the composite production process hot-pressing machine was used to develop novel composites. Prior to the production process, the pumice stones were determined in the sizes of 0-1mm, 1-2mm and 2-3mm by passing them through a regular sieve. Later, chicken feathers with 0-1 mm granule structure were chopped in a blender and mixed with pumice stones separately. These mixtures were sewn in between polypropylene nonwoven fabrics. The composite plates were obtained by placing polypropylene chips on top and bottom of the sewn fabric. The samples for thermal conductivity tests were cut with a diameter of 28 mm from these plates. And heat conductivities of these samples were tested on the P.A. HILTON LTD. H940. By reinforcement materials such as chicken feather and pumice stone, it is aimed to improve the heat conductivity properties of the produced composites. Overall results showed that an increas in particle size of pumice stone has negative effect on the thermal conductivity of natural fiber composites

A comparative study on dyeing capability of conventional and organic cotton fabrics

Cotton fiber, which is the most widely used natural fiber in the textile and paper industries, has a crucial environmental impact. Cultivation of conventional cotton consumes a lot of water and requires the usage of a higher amount of pesticides. Organic cotton is a more environmentally friendly alternative to its growing conditions. The characteristics of cotton change with the differences in growing conditions. In this study, the properties of yarns obtained from both conventionally and organically grown cotton were tested and analyzed. The properties of these yarns in the fabric structure were compared in terms of fabric performance. The produced fabrics were dyed in the cold-pad batch method with 5 different colors of reactive dyes, which are the most demanding colors in the ready-made garment industry. The physical properties and the fastness test results of the dyed organic and conventional cotton fabrics were investigated in detail to highlight the plant growing effects on the fabric behavior. Comparative color analysis and evaluation of the fabrics were made to discuss the performance of the fabrics. It is found that organically grown cotton is not only superior in quality but also has no negative eff ECT on fabric properties

Fragmented QRS complexes are associated with left ventricular systolic and diastolic dysfunctions in patients with metabolic syndrome

Background: Metabolic syndrome (MetS) is found to be associated with deterioration of the left ventricular (LV) systolic and diastolic functions. One of the factors for this impairment is myocardial fibrosis. Fragmented QRS (fQRS) complexes are found to be associated with myocardial fibrosis. The aim of the study was to evaluate if the presence of fQRS on electrocardiogram (ECG) can detect pronounced impairment in the LV systolic and diastolic functions in MetS patients. Methods: The study included 111 (mean age 47 ± 9, 49.5% male) MetS patients and 96 (mean age 45 ± 9, 58.3% male) control subjects without MetS. ECG was evaluated for the presence of fQRS. Each patient underwent conventional echocardiography and tissue Doppler imaging. Results: Fragmented QRS was more common among MetS patients (26.1% vs. 14.6%, p = 0.041). MetS was associated with subclinical LV systolic and LV diastolic dysfunctions. In subgroup analyses of MetS patients, the presence of fQRS on ECG had a higher E/E’ ratio and lower E’ velocity, indicating pronounced diastolic dysfunction, as well as lower isovolumic acceleration (IVA), indicating profound subclinical LV systolic dysfunction. E/E’ ratio and IVA were independent predictors of fQRS presence in patients with MetS. Conclusions: Fragmented QRS is more common among MetS patients compared to non-MetS patients. The presence of fQRS is associated with pronounced subclinical LV systolic and diastolic dysfunctions in MetS patients