Yazarlar

  • MakaleAçık Erişim2021
    Comparison of oxygen consumption of football players in different positions of the game

    Ceylan, Ramazan

    Background: Football players have different structural and physiological characteristics due to the variety of tasks that lie in this field. The main purpose of this research was to compare oxygen consumption of football players in different positions of the game. Materials and methods: The research method was causal or post-occurrence. So nine halfbacks, seven attackers, three goalkeepers and six defenders were chosen to participate in this research. The Chinese bicycle was used to measure V-O2max. The heart rate was determined by the electronic heart rate. Nolan Margaria-Kalamen test machine was used to measure the anaerobic power of players. Analysis of variance and F test were used to compare the mean of differences. All steps were performed using SPSS 21 at the level of 0.05. Results: There is a significant difference between V-O2max of goalkeepers and halfbacks; between goalkeepers and attacking players; between defenders and attackers. There was a significant difference between the anaerobic capacity of halfbacks and goalkeepers; between attackers and goalkeepers. Conclusion: The position and the duration of activity has a great effect on V-O2ma(x) and anaerobic of players. So to increase both characteristics of the players depends on the position of the game.

    • SDG 3 · Sağlık ve Kaliteli Yaşam
    AtıfOpenAlex1
    Web of Scienceİncele
  • Derleme MakaleAçık Erişim2021
    The Effects of Instructional Interventions on the Academic Achievement of Students with Mathematical Learning Difficulties

    Filiz, Tunahan

    Introduction: The aim of this study is to make an up-to-date and detailed analysis by synthesizing different types of primary studies that examine the effect of instructional interventions for students with mathematical learning difficulties on academic achievement. Method: Different types of studies that examine the effects of instructional interventions for students with mathematics learning difficulties on academic achievement were analyzed using meta-analysis method. The effect size values of the studies, the test of heterogeneity, publication bias and information about the moderator analysis were calculated using the CMA (Comprehensive Meta Analysis) statistical program. Findings: The study revealed that intervention programs prepared for students with mathematical learning difficulties had a wide effect on the academic achievement levels of students (Hedge g = 0.764, %95 CI = 0.494-1.033). Discussion: The overall effect size (0.764) obtained from the studies shows that instructional interventions have a positive effect on the mathematics performance of students with learning difficulties. It is seen that different instructional interventions have been developed in order to support these students. The instructional interventions support students in the process of learning mathematics, and continue to raise awareness on the learning difficulties. As a result, it can be stated that more instructional intervention studies are needed.

    • SDG 3 · Sağlık ve Kaliteli Yaşam
    • SDG 4 · Nitelikli Eğitim
    • SDG 10 · Eşitsizliklerin Azaltılması
    AtıfWoS3OpenAlex9TR Dizin7
    Web of ScienceTR Dizinİncele
  • MakaleAçık Erişim2021
    Clustering framework to cope with COVID-19 for cities in Turkey

    Guleryuz, Didem; Ozden, Erdemalp

    Introduction: This article is the product of the research Clustering Framework to Cope with COVID-19 for Cities in Turkey, developed at Bayburt University in 2021. Problem: Turkey's risk map, presented in January 2021, to take local decisions in tackling the COVID-19 pandemic, was based on confirmed cases only. Health, socio-economic and environmental indicators are also important for management decisions of COVID-19. The risk map to be designed by adding these indicators will support more effective decisions. Objective: The research aims to propose a clustering scheme to design a risk map of cities for Turkey. Methodology: The unsupervised clustering algorithm suggested dividing the cities of Turkey into clusters, considering health, socio-economic, environmental indicators, and the spread pattern of COVID-19. Results: We found that cities are clustered into five groups while megacity Istanbul alone formed a cluster, three of Turkey's largest cities formed another cluster. Other clusters consist of 19, 26, and 32 cities, respectively. The most important determinants which have predictive power are identified. Conclusion: The suggested clustering method can be a decision support system for policymakers to determine the differences and similarities of cities in quarantine decisions and normalization phases for the following periods of the pandemic. Originality: To the best of our knowledge, this study differs from previous studies because countries were grouped in previous studies by only considering the confirmed cases. In this study, cities were clustered in terms of the health, socio-economic, and environmental indicators to make decisions locally. Limitations: The distribution of confirmed cases by age could be added, especially to make decisions about education, but this data is not officially announced.

    • SDG 3 · Sağlık ve Kaliteli Yaşam
    • SDG 9 · Sanayi, Yenilikçilik ve Altyapı
    • SDG 11 · Sürdürülebilir Şehirler ve Topluluklar
    AtıfWoS1OpenAlex1
    Web of Scienceİncele
  • MakaleAçık Erişim2021Scopus SJRQ3
    Honey: Determination of volatile compounds, antioxidant and antibacterial activities

    Karlidag, Semiramis; Keskin, Merve; Bayram, Sinan; Mayda, Nazlı; Ozkok, Aslı

    Honey is an important functional food for human health and nutrition that is collected by honey bees and stored in the honeycombs. In this study, total phenolic content, antioxidant activity and volatile compounds of 13 different honey samples collected from various districts of Malatya province were investigated. As a result of this study, it was determined that the total phenolic content varied between 8.50 mg GAE 100 g–1 and 73.90 mg GAE 100 g–1 and it was observed that the honey samples were rich in aldehydes, aliphatic acid and esters, alcohols, hydrocarbons, carboxylic acid esters, ketones, terpenes, fatty acids and esters. In addition, the antibacterial effects of honey samples were determined against 18 different pathogenic bacteria using agar well diffusion (AWD) method, minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC). In AWD assay, it was recorded that inhibition zone diameters varied between 9 mm and 14 mm and honey samples were found to have a partial inhibitory effect against selected target pathogens.

    • SDG 2 · Açlığa Son
    • SDG 3 · Sağlık ve Kaliteli Yaşam
    AtıfScopus5WoS3OpenAlex7
    ScopusWeb of Scienceİncele
  • MakaleAçık Erişim2021Scopus SJRQ3
    Does compliance with the preventive health behaviours against COVID-19 mitigate the effects of depression, anxiety and stress? (¿Cumplir con los comportamientos preventivos de salud contra el COVID-19 reduce los efectos de la depresión, la ansiedad y el estrés?)

    Aydin, Fatih; Kaya, Feridun

    In the present study, the aim was to investigate the associations between compliance with preventive health behaviours, depression, anxiety and stress. 478 adults living in Turkey voluntarily filled out the online survey, which comprised demographic questions, Measure of Compliance with Preventive Health Behaviours against COVID-19, and Depression Anxiety Stress Scales, between 24–31 March 2020: during the initial phase of the COVID-19 pandemic in Turkey. Results revealed that compliance with preventive health behaviours has negative associations with depression, anxiety and stress. Adults’ compliance with the recommended preventive health behaviours accounted for 14% variance in depression, 9% variance in anxiety and 10% variance in stress. The evidence might indicate that compliance with preventive health behaviours may protect people psychologically against the burden created by the novel COVID-19 pandemic.

    • SDG 3 · Sağlık ve Kaliteli Yaşam
    AtıfScopus6WoS7OpenAlex6
    ScopusWeb of Scienceİncele
  • MakaleAçık Erişim2021Scopus SJRQ2
    Adipokine, gut and thyroid hormone responses to probiotic application in chukar partridges (Alectoris chukar) exposed to heat stress

    Bayraktar, Bülent; Tekce, Emre; Kaya, Hacer; Gürbüz, Ahmet Burak; Dirican, Ebubekir; Korkmaz, Serol; Atalay, Banu; Ülker, Ufuk

    The aim of this study was to investigate the effect of Lactobacillus reuteri E81 (LRE) probiotic supplementation on heat stress responses in chukar partridges (Alectoris chukar). The birds were divided into two groups, one of which was exposed to heat stress (HS). Within each group, four subgroups, each including 64 birds, were created for the three treatment doses (200, 400 or 600 mg/kg) of LRE and the control. The experiment was started with day-old birds, kept at a temperature of 25 8C or 37 8C. After a 7-day adjustment period, the LRE supplementation lasted for 35 days. The levels of different adipokines, including visfatin (VF), adiponectin (ADP), chemerin (CHEM), as well as the concentration of plasma citrulline (CIT) and the levels of thyroid hormones (T3 and T4) and thyroid-stimulating hormone (TSH) in the blood were measured at 21 and 42 days of age. A significant correlation (P < 0.01) was found between LRE supplementation and the decrease in serum VF, ADP, CIT, T3 and T4 levels in partridges exposed to HS. On the other hand, no significant relationship was found between LRE supplementation and the serum CHEM and TSH levels (P > 0.05). We concluded that the addition of 600 mg/kg LRE is beneficial in preventing intestinal damage and inflammation provoked by HS.

    • SDG 2 · Açlığa Son
    • SDG 3 · Sağlık ve Kaliteli Yaşam
    AtıfScopus13WoS14OpenAlex16
    ScopusWeb of SciencePubMedİncele
  • MakaleAçık Erişim2021Scopus SJRQ3
    A study on free-radical scavenging activity, individual phenolic compounds and element concentration of propolis; [Propolisin serbest radikal temizleme aktivitesi, bireysel fenolik bilesik içerigi ve element konsantrasyonu üzerine bir çalisma]

    Ecem Bayram, Nesrin

    The aim of this study was to assess the quality of five propolis samples obtained from Turkey (TP), China (CP), Brazil (BP1, BP2), and Ethiopia (EP). The phenolic compounds of the propolis were identified and quantified using the liquid chromatography-tandem mass spectrometry technique (LCMS/ MS). In addition, quality parameters such as total flavonoid content, total phenolic content, freeradical scavenging activity and element contents were investigated. As a result of LC-MS/MS analysis, the extracts were sorted as TP> BP1> BP2> CP> EP in terms of the total concentration of individual phenolic compounds. Chlorogenic acid was determined as the dominant compound in BP1 and EP, pcoumaric acid as the dominant compound in the BP2 and trans-ferulic acid as the dominant compound in the samples from CP and TP. The concentration of DPPH was higher in TP whereas the ABTS concentration was almost similar to other propolis extracts. The contents of potassium (K), calcium (Ca), iron (Fe), magnesium (Mg) and sodium (Na) in the propolis samples were in the range of 2416.75- 14416.02 mg/kg, 8.52-613.25 mg/kg, 102.66-1425.82 mg/kg, 523.84-7336.74 mg/kg and 57.65-191.15 mg/kg, respectively. Consequently, it is again supported that chemical characteristics and activity of propolis varies according to its geographical origin with this study.

    • SDG 3 · Sağlık ve Kaliteli Yaşam
    AtıfScopus1OpenAlex3
    Scopusİncele
  • MakaleAçık Erişim2021Scopus SJRQ3
    Determination of radioprotective and genotoxic properties of sulfamide derivatives

    Aygün, Bünyamin; Alaylar, Burak; Aklncloǧlu, Akln; Allm, Bünyamin; Kocaman, Ebu Talip; Karadayl, Mehmet; Abu Al-Sayyed, Mohammed Ibrahim; Aksu, Seyma; Sakar, Erdem; Özpolat, Özgür Flrat

    Some potential drug active substances with the ability to reduce the effects of radiation on human tissues and cells were investigated. For this purpose, eight different types of sulfamide derivatives were synthesized and nuclear radiation protection parameters were determined. Neutron radiation reduction parameters such as the half-value layer effective removal cross-sections, mean free path, and the number of particles passing through the sample were determined with GEANT4 code. Additionally, the gamma radiation attenuation parameters of the materials examined were determined using Phy-X/PSD software in the energy area of 0.015-15 MeV. These parameters are the half-value layer, mass attenuation coefficient, mean free path, exposure buildup factor and effective atomic number. Neutron radiation absorption experiments were applied using an 241Am-Be fast neutron source. All results obtained for neutron radiation were compared with paraffin and water. It has been found that the ability of sulfamide derivatives to absorb these radiations is superior to reference materials. To determine whether these derivatives could have adverse effects on human health, their genotoxic potential was determined using the Ames/Salmonella bacterial reversion test. The results showed that these derivatives can be considered genotoxically safe in tests at concentrations up to 5 mM. Thus, it is suggested that the derivative materials examined in this study can be used as active substances for a drug to be made for protection against both neutron and gamma radiation.

    • SDG 3 · Sağlık ve Kaliteli Yaşam
    AtıfScopus10WoS9OpenAlex11
    ScopusWeb of Scienceİncele
  • MakaleYalnız künye2021Scopus SJRQ3
    Synthesis of silver nanoparticles prepared with a dextran-type exopolysaccharide from Weissella cibaria MED17 with antimicrobial functions

    İspirli, Hümeyra; Sagdic, Osman; Dertli, Enes

    Microbial polysaccharides can find distinct applications as stabilizer agents including synthesis of nanoparticles. In this study, a dextran-type exopolysaccharide (EPS) was used as the stabilizer agent for the green synthesis of silver nanoparticles (AgNPs-Dex) with antimicrobial characteristics. UV–vis spectroscopy analysis was used to test the formation of AgNPs-Dex. The uniform morphology at around 10 nm size was observed for AgNPs-Dex by TEM analysis and importantly EDX analysis demonstrated the embedment of Ag+ ions within dextran as the stabilizer agent. XRD analysis confirmed the crystalline nature of AgNPs-Dex and FTIR analysis demonstrated the interactions of dextran functional groups with silver. DSC and TGA analysis showed the alteration in the thermal stability of AgNPs-Dex compared to the stabilizer dextran. The antibacterial and antifungal activities of AgNPs-Dex were determined against food originated pathogenic bacteria and fungi and important inhibition levels were observed at 1 mg ml−1 concentration of AgNPs-Dex and this activity was observed to be concentration dependent.

    • SDG 3 · Sağlık ve Kaliteli Yaşam
    AtıfScopus17WoS13OpenAlex15
    ScopusWeb of SciencePubMedİncele
  • MakaleAçık Erişim2021
    Potential bacteriocinogenic lactic acid bacteria from pastırma; [Pastırmadaki potansiyel bakteriyosinojenik laktik asit bakterileri]

    Güllüce, Medine; Kaya, Mükerrem; Kaban, Güzin; Karadayi, Mehmet; Alaylar, Burak; Kamiloğlu, Aybike; Işik, Ceyda; Fettahoğlu, Kübra

    Recent researches conducted have focused on the possibility of using bacteriocin produced by lactic acid bacteria both (LAB) as protective cultures and as natural antimicrobial agents in dry cured meat products such as pastırma. In the present study, 50 lactic acid bacteria strains, previously isolated from various traditional pastırma samples, were tested for their antimicrobial potentials. Determination of antagonistic activities against food-borne pathogenic strains (Listeria monocytogenes, Staphylococcus aureus and Bacillus cereus) were done by using agar-spot and well diffusion assays. Then, active isolates were identified by using 16S rRNA gene sequence analysis. According to the results, 11 of tested LAB were determined with significant bacteriocinogenic potential and these were assigned to as 1 Lactobacillus plantarum, 9 L. plantarum subsp. plantarum and 1 Pediococcus pentosaceus. In conclusion, it was reached that the isolated/identified bacteriocin-producing lactic acid bacteria strains from pastırma samples have a significant potential to prepare pure or crude bacteriocin preparations.

    • SDG 2 · Açlığa Son
    • SDG 3 · Sağlık ve Kaliteli Yaşam
    AtıfScopus1OpenAlex1
    ScopusTR Dizinİncele
  • MakaleYalnız künye2021Scopus SJRQ1
    Orange, red and purple barberries: Effect of in-vitro digestion on antioxidants and ACE inhibitors

    Şensu, Eda; Kasapoğlu, Kadriye Nur; Gültekin-Özgüven, Mine; Demircan, Evren; Arslaner, Ayla; Özçelik, Beraat

    Bioactive compounds such as phenolics, anthocyanins and carotenoids were investigated in Berberis plant with purple (PB), red (RB) and orange (OB) fruits (barberries). The study was aimed to evaluate the bioaccessibility of the antioxidants and ACE (angiotensin converting enzyme) inhibitory compounds of barberry plants upon their transit through in-vitro digestion. Among barberries, (PB) exhibited the strongest antioxidant activity due to its higher phenolic and flavonoid content. The order of total phenolics and anthocyanins was PB > RB > OB. Chlorogenic acid was the main phenolic compound in all barberries even after in-vitro digestion. All barberries had similar amounts of total carotenoids (4.45 mgβ-carotene/100gDW). After in-vitro digestion, decreasing phenolics, anthocyanins and carotenoids led to a reduced antioxidant activity. Anthocyanins were found the most sensitive compounds in-vitro digestion. In terms of ACE inhibition activity, only RB exhibited ACE inhibition before (73.84%) and after (65.51%) in-vitro digestion. No ACE inhibition activity was detected at all in RB and OB samples. Leaves and branches of Berberis had also over 50% ACE inhibitory activity. To our knowledge, this is the first study on the carotenoids of barberry and the effect of in-vitro digestion on its bioactive compounds and ACE inhibitors.

    • SDG 2 · Açlığa Son
    • SDG 3 · Sağlık ve Kaliteli Yaşam
    AtıfScopus30WoS22OpenAlex26
    ScopusWeb of Scienceİncele
  • MakaleAçık Erişim2021Scopus SJRQ3
    Validity and reliability of the Turkish version of the insomnia catastrophizing scale

    Kabadayi, Fedai; Mercan, Oğuz; Yazici-Kabadayi, Sema; Elhatip, Yaser Emir; Büyüksevindik, Baki

    Insomnia catastrophizing has attracted attention in recent years. Individuals may have started to recognize the importance of evaluating the consequences of insomnia, which has worsened during the coronavirus disease 2019 (COVID-19) pandemic. The present study aimed to test the validity and reliability of the Insomnia Catastrophizing Scale (ICS) in the Turkish young adult population. The study group consisted of a total of 387 participants: 57 in the pilot study and 330 in the main study. The majority of the participants in the study were females. According to the results of the confirmatory factor analysis, the single-factor structures of the ICS nighttime and daytime forms were confirmed to be the same as in the original structure, and the fit indices were above the acceptable limits. The ICS forms had very high reliability. The findings of the present study showed that the Turkish daytime and nighttime forms of the ICS are valid and reliable instruments. The results provide a means of measuring insomnia catastrophizing for use in therapeutic and counseling settings for Turkish young adult population. We also propose that mental health practitioners should design interventions to reduce insomnia catastrophizing in Turkish culture.

    • SDG 3 · Sağlık ve Kaliteli Yaşam
    AtıfScopus6WoS5OpenAlex5
    ScopusWeb of SciencePubMedİncele
  • MakaleAçık Erişim2021Scopus SJRQ4
    Investigation of the relationship of asprosin and cardiac troponin response with some physiological and biochemical parameters in Anatolian native horse

    Bayraktar, Bülent; Tekce, Emre

    Summary: Asprosin is a recently discovered glucogenic hormone released from starvation-induced white adipose tissue and amongst others it protects against hyperinsulinism associated with metabolic syndrome. The aim of this study was to examine the effect of age, gender and season on metabolic (asprosin) and cardiovascular (cardiac troponin, I (cTnI), CK, CK-MB) function markers and their relationship with some biochemical parameters in Anatolian native horse breed. This study was carried out between February–August 2020. A total of 40 horses was used for this purpose, including 20 mares and 20 stallions in the age range of 1–6, 7–12. Serum asprosin level, for the winter season in stallions and mares aged 1–6 and 7–12 years respectively 8.9, 8.36; 14.08, 13.58ng/ml were as determined. In addition, for the summer season respectively 17.98, 18.68; 22.22, 21.32ng/ml were detected and no difference between the groups (P>0.05). On the other hand, serum cTnI levels for the winter season in stallions and mares aged 1–6 and 7–12 years respectively 0.014, 0.018; 0.016, 0.02ng/ml were as determined. In addition, for the summer season respectively 0.012, 0.016; 0.014, 0.018ng/ml were detected. It was shown that the serum biochemical parameters and levels of cTnI levels in the domestic horse breed the horses belonging to the Anatolian varied depending on age, gender, and season (p < 0.05) but the effect of hormone levels serum asprosin wasn’t found statistically significant (p>0.05).Our results showed that cTnI could be a useful parameter in the examination of the cardiovascular system status of horses.

    • SDG 2 · Açlığa Son
    • SDG 3 · Sağlık ve Kaliteli Yaşam
    AtıfScopus1WoS1OpenAlex1
    ScopusWeb of Scienceİncele
  • MakaleYalnız künye2021Scopus SJRQ1
    Production of lactose derivative hetero-oligosaccharides from whey by glucansucrase E81 and determination of prebiotic functions

    İspirli, Hümeyra; Dertli, Enes

    Bioactive oligosaccharides are important compounds for development of functional foods and ingredients. In this study, lactose derivative hetero-oligosaccharides were produced by acceptor reaction of glucansucrase E81 with whey. The synthesis of oligosaccharides was monitored by Thin Layer Chromatography (TLC) analysis followed by 1H and 13C Nuclear Magnetic Resonance (NMR) spectroscopy analysis which demonstrated the glycosylation of lactose with α-(1 → 2), α-(1 → 3) and α-(1 → 4) linkages. Liquid chromatography–mass spectrometry (LC-MS) analysis demonstrated the formation of DP 7 oligosaccharides from whey. The synthesized oligosaccharides were not digested under in vitro human gastric juice and α-amylase conditions. The prebiotic effect of lactose derivative hetero-oligosaccharides was tested and no growth in pathogenic strains was observed whereas certain probiotic strains utilised lactose derivative hetero-oligosaccharides as Carbon source and their growth was promoted. These findings can be important to reveal the potential of glucansucrases to produce functional oligosaccharides from different sources including waste materials.

    • SDG 3 · Sağlık ve Kaliteli Yaşam
    AtıfScopus17WoS16OpenAlex16
    ScopusWeb of Scienceİncele
  • MakaleAçık Erişim2021Scopus SJRQ3
    Virulence Factors, Antibiotic Resistance, And Antimicrobial Activity Of Enterococcus Spp. Isolated From Different Sources In Algeria

    Houicher, Abderrahmane; Alkay, Zuhal; Bourahla, Mahdi; Dertli, Enes

    This study aimed to isolate and identify different Enterococcus spp. from diverse sources including dromedary raw milk, rhizospheric soil and natural saline water samples and to determine their antimicrobial activities and safety aspects. From these sources, distinct strains of E. faecium, E. durans, E. hirae, and E. gallinarum species were detected. No virulence factors were observed for six Enterococcus strains while none of the tested Enterococci harboured the genes encoding cytolysin and aggregation substance. All tested strains showed a high sensitivity to many antibiotics, particularly vancomycin, and exhibited a remarkable antagonist activity toward Salmonella typhimurium, Fusarium graminearum and Penicillium expansum. PCR testing of enterocins revealed the co-presence of entA and entB among all tested Enterococci. No hemolytic reaction was also detected in Enterococci isolates, except for six strains. Based on these findings, potential candidates for use as biocontrol agents or probiotic starters were selected for further studies.

    • SDG 3 · Sağlık ve Kaliteli Yaşam
    AtıfScopus4WoS3OpenAlex5
    ScopusWeb of Scienceİncele
  • MakaleAçık Erişim2021Scopus SJRQ1
    Forecasting outbreak of COVID-19 in Turkey; Comparison of Box–Jenkins, Brown's exponential smoothing and long short-term memory models

    Guleryuz, Didem

    The new coronavirus disease (COVID-19), which first appeared in China in December 2019, has pervaded throughout the world. Because the epidemic started later in Turkey than other European countries, it has the least number of deaths according to the current data. Outbreak management in COVID-19 is of great importance for public safety and public health. For this reason, prediction models can decide the precautionary warning to control the spread of the disease. Therefore, this study aims to develop a forecasting model, considering statistical data for Turkey. Box-Jenkins Methods (ARIMA), Brown's Exponential Smoothing model and RNN-LSTM are employed. ARIMA was selected with the lowest AIC values (12.0342, -2.51411, 12.0253, 3.67729, -4.24405, and 3.66077) as the best fit for the number of total case, the growth rate of total cases, the number of new cases, the number of total death, the growth rate of total deaths and the number of new deaths, respectively. The forecast values of the number of each indicator are stable over time. In the near future, it will not show an increasing trend in the number of cases for Turkey. In addition, the pandemic will become a steady state and an increase in mortality rates will not be expected between 17–31 May. ARIMA models can be used in fresh outbreak situations to ensure health and safety. It is vital to make quick and accurate decisions on the precautions for epidemic preparedness and management, so corrective and preventive actions can be updated considering obtained values.

    • SDG 3 · Sağlık ve Kaliteli Yaşam
    AtıfScopus39WoS28OpenAlex47
    ScopusWeb of SciencePubMedİncele
  • MakaleAçık Erişim2021Scopus SJRQ3
    An application of finite element method in material selection for dental implant crowns

    Sensoy, Abdullah T.; Çolak, Murat; Kaymaz, Irfan; Findik, Fehim

    Materials used for dental crowns show a wide range of variety, and a dentist's choice can depend on several factors such as patient desires, esthetics, tooth factors, etc. One of the most important issues for implant surgery is the primary stability and it should be provided to minimize the risks of screw loosening, failed osseointegration, or nonunion. The current study aims to present the Finite Element Analysis (FEA)-based material selection strategy for a dental crown in terms of reducing the aforementioned risks of dental implants. A virtual surgery mandible model obtained using MIMICS software was transferred to the ANSYS and material candidates determined using CES software were compared using FEA. The results indicated that Zr02+Y2O3 (zirconia) has shown a 12.79% worse performance compared to Au83-88/Pt4-12/Pd4.5-6 alloy in terms of abutment loosening. On the other hand, zirconia is the most promising material for dental crowns in terms of the stability of the bone-implant complex. Therefore, it may show the best overall performance for clinical use. Moreover, as suggested in this study, a better outcome and more accurate predictions can be achieved using a patient-specific FEA approach for the material selection process.

    • SDG 3 · Sağlık ve Kaliteli Yaşam
    AtıfScopus4WoS4OpenAlex5
    ScopusWeb of SciencePubMedİncele
  • MakaleAçık Erişim2021Scopus SJRQ1
    Effects of ozone treatment to milk and whey concentrates on degradation of antibiotics and aflatoxin and physicochemical and microbiological characteristics

    Sert, Durmuş; Mercan, Emin

    The aim of this study was to investigate the effects of the ozone treatment (OT) to milk concentrate (MC) and whey concentrate (WC) on the physicochemical and textural properties, as well as, on the microbial, antibiotic, and aflatoxin content. For that purpose, OT was applied to MC and WC samples 0 (control), 5, 10, 15, 30, or 60 min. OT (60 min) achieved 18.9 and 9.9% degradation of aflatoxin M1 in MC and WC, respectively. OT caused degradation of β–lactam, and tetracycline in concentrates. Volume mean diameter of MC was increased by OT, those of WC was decreased. The firmness and consistency values of ozone-treated concentrates were lower than the control groups. OT decreased the cohesivity of MC. OT increased the lightness of samples, while it decreased yellowness. In MC and WC samples, OT was effective in reducing the microbial load. The degradation of antibiotics and aflatoxin, and reducing the microbial load of concentrates by OT are crucial for human health and the processing of dairy products.

    • SDG 2 · Açlığa Son
    • SDG 3 · Sağlık ve Kaliteli Yaşam
    • SDG 12 · Sorumlu Üretim ve Tüketim
    AtıfScopus32WoS26OpenAlex36
    ScopusWeb of Scienceİncele
  • MakaleAçık Erişim2021Scopus SJRQ3
    Cycling as transportation & COVID-19: Advantages of shared bicycles during epidemics

    Saatchian, Vahid; Azimkhani, Amin; Türkmen, Mutlu; Laein, Dorri Dolatkhah

    In addition to the environmental problems that have plagued human life in recent decades, the outbreak of the coronavirus epidemic has endangered people's health and adversely affected their lives in other ways. Therefore, the present study aimed to investigate the advantage of using shared bicycles (SB) during the outbreak of epidemics. For this purpose, 310 male subscribers of an SB system were examined. The research tool was a questionnaire taken from studies. The results showed that the environmental and health advantages were favourable, but the place advantage indicated a relatively unfavourable situation. The results of the structural equation model also showed that the advantages of using an SB based on the highest impact are the motivational advantage, health advantage, environmental advantage, social advantage, financial advantage and place advantage. These results can provide useful solutions for governments to reduce environmental risks and maintain health and physical activity during epidemics.

    • SDG 3 · Sağlık ve Kaliteli Yaşam
    • SDG 11 · Sürdürülebilir Şehirler ve Topluluklar
    AtıfScopus8OpenAlex10
    Scopusİncele
  • MakaleYalnız künye2021Scopus SJRQ4
    Investigating the role of social functions of parks on adherence to physical activity of elderly people during an epidemic disease (COVID-19)

    Azimkhani, Amin; Honari, Habib; Türkmen, Mutlu; Gholamian, Javad; Saatchian, Vahid; Salari, Reyhane

    Introduction: The importance of desirable physical activity as a deterrent and risk factor for the elderly is well known. The present study was conducted to investigate the role of parks’ social functions on adherence to physical activity in elderly people in Mashhad During epidemic disease (COVID-19). Method: This cross-sectional study was performed using a structured interview technique and a multi-part questionnaire on 100 elderly people. Sampling was done in two stages using a systematic random method. Results: Based on the results, it was found that there is a positive and significant relationship between the social function of parks and its components with adherence to physical activity in the elderly (P <0.05) and well as 18% of adherence to physical activity changes is related to the social function of parks. Conclusion: The findings of this study showed that many factors are affecting physical activity in elderly people, which understanding these factors help educators and other health professionals in designing appropriate intervention programs. Maintaining regular PA during self-isolation is important for the prevention of future chronic health conditions due to a sedentary lifestyle. During crises, functional medical care and vital societal services are of the highest priority.

    • SDG 3 · Sağlık ve Kaliteli Yaşam
    AtıfScopus1OpenAlex1
    Scopusİncele