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The mediating effect of Covid-19 risk perception on the correlation between levels of mindfulness and preventive health behavior in nursing students
Get PDFThis study aimed to investigate nursing students' levels of mindfulness and its effect on developing
preventive health behaviors, and to examine the mediating role of COVID-19 risk perception on this effect.
Design and measures: This study used a descriptive and correlational study design.
Results: The level of mindfulness, accompanied by COVID-19 risk perception caused a.104-unit increase in
developing preventive health behavior.
Conclusions: The findings revealed that the indirect effect of the level of mindfulness on developing preventive
health behavior was at a significant level; therefore, it is concluded that COVID-19 risk perception mediates the
correlation between level of mindfulness.
Practice implications: The present study is important to investigate nursing students' levels of mindfulness and the
effect of these on developing preventive health behavior
Eco-friendly control method against invasive pest box tree moth, (Cydalima perspectalis (Walker) (Lepidoptera: Crambidae))
Get PDFBackground: Buxus sempervirens (Boxwood) is a type of plant that has economic and cultural significance, danger of extinction due to various factors. Cydalima perspectalis (Walker, 1859) (Lepidoptera: Crambidae), an invasive species, has an important role as a boxwood pest. The inadequacy of the pheromone trap methods recommended to control the pest or the negative effects of chemical insecticides on the environment have led to seeking alternative approaches in this regard. In this study, it was conducted to determine whether entomopathogens can be applied in pest control, the insecticidal effects of Bacillus thuringiensis subsp. kenyae (FDP-8), Bacillus cereus (FD-63), Brevibacillus brevis (FD-1) and Vibrio hollisae (FD-70) bacterial strains at the concentration of 1 × 108 CFU/ml and Beauveria bassiana (Bals.-Criv.) Vuill. (Cordycipitaceae) (ET 10) fungal isolate at the concentrations of 1 × 106, 1 × 107 and 1 × 108 conidia/ml were tested under controlled conditions. Results: As compared the results of the bacterial strains and fungal tested, it was determined that the best results were obtained from in the fungal isolate at the concentration of 1 × 108 conidia/ml. After 192 and 216 h. of observation, the 1 × 108 CFU/ml of bacterial strains: B. cereus FD-63, B. brevis FD-1 and V. hollisae FD-70; also, 1 × 108 conidia/ml concentration of ET 10 fungal isolate of B. bassiana control C. perspectalis caused mortality rate of 100% under laboratory conditions. Conclusion: Future studies of these microorganisms against this pest in the field, may be an important alternative method to control this pest
In Vitro Cytotoxicity of Methano[1,2,4]Triazolo-[1,5-C][1,3,5]Benzoxadiazocine Derivatives and Their Effects on Nitrite and Prostaglandin E2 (PGE2) Levels
No full textBiological activity of the Biginelli type heterocycles is extremely broad and provides a suitable platform for the discovery of potent small drug-like molecules. Such activity of 3,4-dihydropyrimidin-2(1H)-one (DHPM) derivatives is widely known, whereas their oxygen-bridged analogs, benzoxadiazocines, are presented quite rarely in the literature. In this study, a series of new methano[1,2,4]triazolo[1,5-c][1,3,5]benzoxadiazocine derivatives (3a-3j) were evaluated in vitro for their activities and molecular docking features. According to the molecular docking study, COX-2 and PGE(2)S appeared as likely targets responsible for the reduced PGE(2) levels caused by the title compounds. The cytotoxicity of compounds 3a-3g, 3j was evaluated on RAW 264.7 murine macrophage cell line by MTT assay after treatment for 24 h with various doses (25, 50, 100 mu M) of these compounds. Then, compounds admitting cell viability higher than 70% were tested for their anti-inflammatory activity at non-toxic doses by evaluating the nitrite level of cell supernatants with the Griess reagent. Compounds 3c and 3f demonstrated significant inhibition of nitrite production (by 29 and 25%, respectively) at 100 mu M (p < 0.05). These compounds significantly inhibited PGE(2) production, thus suggesting analgesic activity
Orman yangınlarında çalışan işçilerin sağlık sorunları üzerine bir araştırma
Get PDFTurkey is geographically located in a region susceptible to wildfires. To ensure the long-way
sustainability of our forests, protective measures should be taken initially, and fires that start despite
precautions should be extinguished as soon and effectively as possible. The mental-physical health of
fire workers was investigated in this study by examining the recent state of occupational safety and
health for forest fire workers employed by the İzmir Regional Directorate of Forestry and assessing
the psychological condition of the workers. The research sampled 246 fire workers assigned to the
İzmir Regional Directorate of Forestry. Data collection was accomplished through the questionnaire
method. Frequency weights and chi-square methods were used to analyze the acquired data.
According to the study, 117 of the questionnaire respondents had at least one accident throughout
their careers as fire workers. And 101 participants have been involved in an accident in the previous
year. 70% of those with a high score on the General Health Questionnaire and 35.8% of those with a
low score had an occupational accident. Psychologically, 24% of field workers felt shyness, 13.8% felt,
and 2.8% felt dread. 59.4% stated that they felt nothing. As a result, it was detected that fire workers
should get the required occupational safety and health training, the risks listed with accidents should
be minimized, and improvements aiming for their psychosocial status should be addressed.Ülkemiz yangına hassas alanların bulunduğu bir coğrafyada yer almaktadır. Ormanlarımızın
sürdürülebilirliğinin sağlanabilmesi için öncelikle koruyucu tedbirler alınmalı buna rağmen çıkan
yangınlara en kısa zamanda ve en etkili şekilde müdahale edilmelidir. Bu çalışma ülkemizin İzmir Orman
Bölge Müdürlüğüne bağlı çalışan orman yangın işçilerinin iş sağlığı ve güvenliği konusunda son yıllardaki
durumun ortaya konulması ve işçilerin psikososyal durumlarının değerlendirilmesi yapılarak yangın
işçilerinin ruhsal-bedensel sağlığı araştırılmıştır. Çalışma İzmir Orman Bölge Müdürlüğü idari sınırları
içinde faaliyet gösteren 246 adet yangın işçisi üzerinde yapılmıştır. Veri toplamasında anket yöntemi
uygulanmıştır. Bu veriler, frekans ağırlıkları ve ki-kare yöntemleri ile değerlendirilmiştir. Çalışmaya göre
ankete katılan yangın işçilerinin 117’si meslek hayatı boyunca en az bir kez kaza geçirmiştir. Son bir yılda
kaza geçiren kişi sayısı ise 101’dir. Genel Sağlık Anketi’nden yüksek puan alanların %70’i, düşük puan
alanların %35.8’i iş kazası geçirmiştir. Çalışma alanındaki işçilerin psikolojik açıdan %24’ü sıkılganlık,
%13.8’i yalnızlık, %2.8’i korku hissettiğini söylemiştir. %59.4’ü ise herhangi bir şey hissetmediğini
söylemiştir. Sonuç olarak yangın işçilerinin, iş sağlığı ve güvenliği konularında gerekli eğitimlerden
geçirilmesi, etki düzeyine göre sıralanan kaza risklerinin en aza indirilmesi ve psikososyal durumlarına
yönelik iyileştirmelerin yapılması gerektiği belirlenmiştir
The impact of leadership styles and organizational trust on innovative work behaviors: An empirical study
No full text03.12.2022 tarihine kadar kullanımı yazar tarafından kısıtlanmıştır.Bu çalışmanın amacı, algılanan demokratik liderlik ve yönetsel liderliğin örgütsel güven ve alt boyutları (yöneticiye güven, çalışma arkadaşlarına güven ve örgüte güven) ve yenilikçi iş davranışı ve alt boyutları üzerindeki etkisini incelemektir. Bununla birlikte örgütsel güvenin ve alt boyutlarının yenilikçi iş davranışı ve alt boyutları (fikir keşfetme, fikir üretme, fikir geliştirme ve fikir uygulama) üzerindeki etkisini araştırmaktır. Aynı zamanda sonuçlara dayalı öneriler sunmaktır. Araştırmanın örneklemini Türkiye genelinde Milli Eğitim Bakanlığında görev yapan öğretmenler oluşturmaktadır. Veri toplamak için oluşturulan anket formu araştırma örnekleminde yer alan katılımcılara dağıtılmıştır. Veriler 515 katılımcıdan toplanmıştır. Elde edilen veriler SPSS 25.0. istatistik programı ile analiz edilmiştir. Analizlerde korelasyon ve regresyon yöntemleri kullanılmıştır. Araştırmanın sonuçları, demokratik liderliğin ve yönetsel liderliğin örgütsel güven üzerinde olumlu ve anlamlı bir etkiye sahip olduğunu göstermiştir. Araştırma sonuçları aynı zamanda demokratik liderliğin ve örgütsel güvenin yenilikçi iş davranışı üzerinde olumlu ve anlamlı bir etkiye sahip olduğunu ortaya koymuştur. Ancak yönetsel liderliğin, yenilikçi iş davranışı üzerinde anlamlı bir etkisi olmadığı bulgusuna ulaşılmıştır. Araştırmanın sonuçlarına göre uygulayıcılara, çalışanların örgütlerde yenilikçi iş için davranışlarını geliştirmeleri, astlarına karşı uygun liderlik sergilemeleri ve örgütlerde örgütsel güveni artırmaları önerilmektedir.The aim of this study is to examine the impact of perceived democratic leadership and managerial leadership on organizational trust and its sub-dimensions (trust in supervisor, trust in co-workers and trust in organization) and innovative work behaviour and its sub-dimensions. This study also investigates the impact of organizational trust and its sub-dimensions on innovative work behaviour and its sub-dimensions (idea exploration, idea generation, idea development, and idea implementation). At the same time, it is to make suggestions based on the results. The sample of the study consists of teachers working in the Ministry of National Education throughout Turkey. The questionnaire form created for data collection was distributed to participator in the research sample. The data were collected from 515 participants. The data were analysed with SPSS 25.0. statistical software. Correlation and regression methods were used in the analyses. Results of the study showed that democratic leadership and managerial leadership have a significant and positive impact on organizational trust. The results also revealed that democratic leadership and organizational trust have a significant and positive impact on innovative work behaviour. However, it is found that the managerial leadership hasn't significant impact on innovative work behaviour. According to this result, it is recommended to practitioners that they should exhibit appropriate leadership towards to their subordinates and they should improve the organizational trust and to develop innovative work behaviour of the employees in the organizations
Effects of mineral fillers on sound absorption coefficient of nutshell/polymethylmethacrylate composites
Get PDFBu çalışmada, farklı partikül boyutuna sahip (max.150, 250, 425 mikron) fındıkkabuğu/
polimetilmetakrilat kompozitlere ilave edilen, mineral dolgu maddelerinin ses yutma katsayısına
etkileri araştırılmıştır. Kullanılan dolgu maddeleri; camküre, wollastonit, ve mika’dır. Farklı partikül
büyüklüğüne sahip fındıkkabuğu polimetilmetakrilat kompozitler % 15 oranında fındıkkabuğu
içermektedir. Bu kompozitler içerisine % 2.5, 5 ve 10 oranında dolgu maddeleri ilave edilerek ses
yutma testlerinde kullanılacak kompozit numuneler hazırlanmıştır. Mineral dolgulu
fındıkkabuğu/polimetilmetakrilat kompozitlerin ses yutma (α) katsayısı, çift mikrofonlu empedans
tüpü yöntemiyle belirlenmiştir. Ayrıca kompozitlerin yoğunlukları Arşimed prensibine göre tayin
edilip, içerdiği boş hacim yüzde oranları hesaplanmıştır. Numune morfolojisini değerlendirmek amacı
ile, deney yapılan numunelerden kırık parçalar elde edilmiştir. Kırık yüzeylerin görüntüleri taramalı
elektron mikroskobu ile görüntülenip, içyapı bu görüntüler çerçevesinde değerlendirilmiştir.
Çalışmanın sonuçlarına göre, kompozite ilave edilen cam küre ve mikanın oranları ile birlikte,
fındıkkabuğu partikül boyutunun da artması ses yutma katsayısını artmıştır. Bu değişimin sade
fındıkkabuğu kompozitlere göre maksimum % 247 oranda olduğu belirlenmiştir.In this study, the effects of mineral fillers added to nutshell Polymethylmethacrylate composites with
different particle sizes (max.150, 250, 425 microns) on sound absorption were investigated. The fillers
used are glass sphere, wollastonite, carbonate and mica. Hazelnut shell polymethylmethacrylate
composites with different particle size contain 15% nut shell. Composites to be used in sound
absorption tests were prepared by adding 2.5, 5, 10 % fillers to these composites. Sound absorption
(normal incidence absorption coefficient) properties of mineral filled Nutshell /
polymethylmethacrylate composites were determined by dual-microphone impedance tube method.
In addition, the density of the materials was found according to the Archimedes principle and the
empty volume fractions it contained were determined. In order to evaluate the internal structure of
the sample, broken pieces were obtained from the tested samples. The images of the fractured
surfaces were visualized by scanning electron microscopy and the internal structure was evaluated
within the framework of these images. According to the results of the study, the increase in the
hazelnut shell particle size along with the ratios of glass sphere and mica added to the composite
increased the sound absorption coefficient. It was determined that this change was maximum 247%
compared to plain hazelnut shell composites
Changes in the protein, lipid and carbohydrate composition of Achroia grisella Fabr. (Lepidoptera: Pyralidae) larvae contaminated with lead
Get PDFBu çalışmada, kurşunun Achroia grisella (Lepidoptera: Pyralidae) larvalarının protein, lipit ve
karbohidrat miktarlarına etkisi araştırılmıştır. Larvalar farklı konsantrasyonlarda kurşun (50, 100 ve 200
mg/kg besin) ile kontamine edilen yapay bir besin ortamında yetiştirilmiştir. Kültür hazırlama ve tüm
deneyler 16A:8K fotoperiyot, 25 ± 2 °C sıcaklık, %60 ± 5 bağıl nem içeren bir ortamda gerçekleştirilmiştir.
Biyokimyasal analizlerde son evre A. grisella larvaları kullanılmıştır. Elde edilen veriler, kurşun
uygulamasının 50 ve 200 mg/kg kurşun konsantrasyonlarında larvaların protein miktarında önemli bir
azalmaya neden olduğunu göstermiştir. Larvaların karbohidrat ve lipit miktarları 100 ve 200 mg/kg
kurşun konsantrasyonlarında kontrol grubuna göre önemli ölçüde düşmüştür.In this study, the impact of lead on protein, lipid and carbohydrate amounts of Achroia grisella
(Lepidoptera: Pyralidae) larvae was investigated. Larvae were maintained on an artificial diet
contaminated with different concentrations of lead (50, 100 and 200 mg/kg diet). Culturing and all
experiments were carried out in a room with a 16L:8D photoperiod, at a temperature of 25 ± 2 °C and
60 ± 5% relative humidity conditions. Last instar A. grisella larvae were used for the biochemical
analysis. The obtained data showed that lead application resulted in a considerable decrease in the
protein amount of the larvae at 50 and 200 mg/kg lead concentrations. Carbohydrate and lipid amounts
of larvae declined significantly at 100 and 200 mg/kg lead concentrations with respect to the control
grou
Effects of different incising pretreatments in improving permeability in two refractory wood species
Get PDFFor many product and applications, the penetration of preservatives or
modification substances into wood species should be deep and
homogeneous. Caucasian spruce and European larch are resistant to
impregnation. This study compared how different incising pre-processes
increased the retention of impregnation materials and the depth of their
penetration into the structures of these refractory wood species. Mechanical,
biological, and laser incising pretreatments were applied to increase the
permeability of sapwood samples before the impregnation. To compare the
uptake of the wood preservatives transverse and longitudinal to the axial
tracheids in the samples, the cross-sections of some of the samples that had
been subjected to different incising pretreatments were covered with a
polyurethane-based paint. All wood samples were impregnated using a
vacuum method with Celcure C4 new generation preservatives. The study
compared the possible effects of these different incising pretreatments on the
uptake of preservatives into the tracheids in the spruce and larch woods in
both longitudinal and transverse directions. The results showed that the
copper (Cu) uptake levels increased in these refractory wood species,
especially in the transverse direction, after the different incising pretreatments.
Moreover, the results showed it is very important to choose the most suitable
pretreatment method for the refractory tree species before impregnation
Assessment of ideal smart network strategies for logistics companies using an integrated picture fuzzy LBWA-CoCoSo framework
No full textPurpose Nowadays, companies have required new alternatives and strategies to handle environmental sustainability difficulties, primarily as ecological and social awareness has grown. In this context, the aim is to determine the green transportation indicators in companies with corporate identity and logistics activities at the international level in Giresun, Ordu, Gumushane, Artvin, Rize, and Trabzon in the Eastern Black Sea Region in Turkey. At the same time, the study contributes to providing an effective and applicable solution to decision-making problems involving the assessment of green transportation indicators and smart network strategies in the logistics sector, which is a critical sector for countries. The purpose of this paper is to address these issues. Design/methodology/approach This study aims to propose a model for the selection of smart network strategy and to determine the criteria weights used in green transportation indicators, and establish an ideal smart network strategy. In achieving the outlined goals of the study, the authors believe that the model proposed in the study will draw the focus to green logistics which will aid the environmental, economic and social efforts of businesses and governments through the provision of efficient use of scarce resources, which will, in turn, ensure that we leave a sustainable environment for future generations and businesses enjoy a competitive advantage. At the same time, different smart network strategies and green transportation indicators in companies show the success rate of social, economic and environmental indicators in green logistics practices. In addition to providing innovative, reliable and sustainable transportation systems, smart network strategies are critical for businesses to create cost advantages. Through the green transportation indicators and smart network strategies selection model outlined in this study, it is clear that the contribution will not only be limited to businesses, as the society and governments will also benefit from the important indicators on sustainability, as well as the protection of the environment and nature. Findings According to the findings, "economic indicators" is the essential green transportation indicator in logistics companies with a corporate identity and worldwide transportation operations. Besides, the "mixed access model strategy" is the most appropriate smart network strategy in logistics firms with corporate identity and worldwide transportation activities. Currently, it is possible to assume that logistics organizations prefer to profit from all smart network strategies in terms of cost optimization and competitiveness rather than from just one. The study, on the other hand, which is a road map that will help sustainability practices in the logistics sector due to green transportation, also examines the similarities and differences of green transportation practices in companies in the relevant sector and to what extent they can be reflected. As a result, the study provides a practical road map for selecting green transport indicators and a smart network strategy process for the logistics industry. Originality/value This study examined logistics companies with a corporate identity and international transportation activities in provinces in the Eastern Black Sea Region such as Ordu, Giresun, Trabzon, Rize, Artvin and Gumushane. Novel picture fuzzy level based weight assessment (PF-LBWA) and picture fuzzy combined compromise solution (PF-CoCoSo) methods are developed to solve the decision-making problem
When it’s okay to hit: How Turkish and U.S. preschoolers and adults make judgments about permissible and impermissible acts of force
Get PDFTo navigate their complex social worlds, children need to make judgments about when, if ever, it is okay to use force against others. By adulthood, most come to condemn violence in most situations yet accept or even encourage force in other situations, such as self-defense or contact sports. This research examined key factors expected to guide how preschoolers and adults make judgments about permissible and impermissible force. These factors included the antecedent events—preceding the force act—and the emotion attributed to the victim. In four studies with Turkish and U.S. preschoolers and adults, an interviewer presented participants with vignettes in which one child used force against another. The antecedent event significantly affected children's and, to an even greater extent, adults’ judgments about force. Participants were also more likely to judge force as permissible when they attributed positive or neutral emotions to the victim. Some cultural differences also emerged. The findings shed light on how children begin to draw moral distinctions between permissible and impermissible force