Sürdürülebilir Kalkınma Amaçları
Yazarlar
- Dertli, Enes(114)
- Kaya, Yunus(48)
- Şahin, Engin(48)
- İspirli, Hümeyra(47)
- Özen, Soner(38)
- Şenay, Volkan(37)
- Pat, Suat(36)
- Kutlu, Naciye(32)
- Artar, Musa(31)
- Can, Zehra(31)
- Korkmaz, Şadan(31)
- Yilmaz, Mustafa Tahsin(31)
- Öner, Erdal(31)
- Bayram, Sinan(30)
- Cuce, Erdem(30)
- Ertugrul, Mehmet(29)
- Hasar, Ugur Cem(29)
- Ecem Bayram, Nesrin(28)
- Mercan, Emin(28)
- Ayata, Ümit(27)
- Bayraktar, Bülent(27)
- Çolak, Murat(23)
- Özdemir, Akın(23)
- Ayazoglu, Rabil(22)
- Cuce, Pinar Mert(22)
- Sert, Durmuş(22)
- Bayram, Ozkan(21)
- Kamiloğlu, Aybike(21)
- Dirican, Ebubekir(20)
- Kadakal, Mahir(20)
- Abdioglu, Murat(19)
- Birinci, Ahmet(19)
- Tozlu, Alperen(19)
- Gerçek, Yusuf Can(18)
- Taylan, Osman(18)
- Cinar, Mehmet(17)
- Gul, Volkan(16)
- Hasar, Ugur C.(16)
- Kadakal, Huriye(16)
- Kara, Yakup(16)
Yayınlar
- MakaleAçık Erişim2022Investigation of the effect of current density and PH on oil and grease removal from leather industry wastewaters by electrocoagulation method
Bi̇Ngül Reçber, Züleyha; Ekmekyapar Torun, Fatma; Kul, Sinan; İRdemez, Şahset
In this study, the effects of pH and current density on the removal of high concentrations of oil and grease in leather industry wastewater by the electrocoagulation method were investigated. Two different types of electrodes were used in the study. Studies with aluminum electrodes have shown that these electrodes are more effective than iron electrodes in removing oil and grease. In addition, aluminum electrodes are affected more by the system pH than iron electrodes. Studies have shown that higher oil and grease removal efficiencies are obtained below pH 4 for both electrodes. While the oil and grease removal efficiency with Al electrodes is 95% at pH 2, this value decreases to 83% at pH 6. In Fe electrodes, while the removal efficiency is 87.83% at pH 2, it decreases to 83% at pH 6. The effect of current density on oil and grease removal was examined and it was observed that the removal efficiency remained constant above a certain current density in aluminum electrodes. While the efficiency of Al electrodes is 83.31% at 0.6 mA cm-2 current density, this value has increased to about 98% at 1.2, 1.8, and 2.4 mA cm-2 current densities. In Fe electrodes, the oil and grease removal efficiency is 82.66% at 0.6 mA cm-2 current density, while it is 90% at 1.2 and 1.8 mA cm-2 current densities and 98% at 2.4 mA cm-2. These results show that the electrocoagulation process removes the oil and grease in wastewater at a high rate. This shows that this process can also be used as pre-treatment before the biological treatment of industrial wastewater with high oil and grease content. Copyright 2021, Yıldız Technical University.
AtıfScopus2WoS2OpenAlex1
İncele - MakaleAçık Erişim2022Scopus SJRQ1Boundedness of solutions to a quasilinear parabolic–parabolic chemotaxis model with variable logistic source
Ayazoglu, Rabil; Akkoyunlu, Ebubekir
This paper deals with the higher dimension quasilinear parabolic–parabolic chemotaxis model involving a source term of logistic type ut= ∇ · (ϕ(u) ∇ u) - ∇ · (ψ(u) ∇ υ) + g(x, u) , τυt= Δ υ- υ+ u, in(x,t)∈Ω×(0,T), subject to nonnegative initial data and homogeneous Neumann boundary condition, where Ω is a smooth and bounded domain in RN, N≥ 1 and ψ, ϕ, g are smooth, positive functions satisfying νsq≤ ψ≤ χsq, ϕ≥ σsp, p, q∈ R, ν, χ, σ> 0 when s≥ s> 1 , g(x, s) ≤ ηsk(x)- μsm(x) for s> 0 , η≥ 0 , μ> 0 constants and g(x, 0) ≥ 0 , x∈ Ω , where k, m are measurable functions with 0≤k-:=essinfx∈Ωk(x)≤k(x)≤m+:=esssupk(x)x∈Ω<+∞, 1<m-:=essinfx∈Ωm(x)≤m(x)≤m+:=esssupm(x)x∈Ω<+∞. We extend the constant exponents k= { 0 , 1 } , m> 1 which in logistic source term g(s) ≤ ηsk- μsm for s> 0 , η≥ 0 , μ> 0 as variable exponents k(·) ≥ 0 , m(·) > 1 with k+< m-. It is proved that if q= m-- 1 (critical case) with μ properly large that μ > μ for some μ> 0 , then there exists a classical solution which is global in time and bounded. Furthermore, if q< m-- 1 , we prove that the classical solutions to the above system are uniformly in-time-bounded without restriction on μ.
AtıfScopus10WoS8OpenAlex10İncele - MakaleYalnız künye2022Scopus SJRQ1Avanafil as a Novel Therapeutic Agent Against LPS-Induced Acute Lung Injury via Increasing CGMP to Downregulate the TLR4-NF-κB-NLRP3 Inflammasome Signaling Pathway
Aydin, Pelin; Magden, Zeynep Berna Aksakalli; Uzuncakmak, Sevgi Karabulut; Halici, Hamza; Akgun, Nurullah; Mendil, Ali Sefa; Mokhtare, Behzad; Cadirci, Elif
Aim: We demonstrate the effect of PDE5 inhibitors in cases of acute lung injury via the relationship between cGMP/NO and the TLR4-NF-κB-NLRP3 pathway. Materials and Methods: This study was performed with 30 male Wistar albino rats. Lipopolysaccharide (LPS) was administered intratracheally to the rats and acute lung injury (ALI) was induced. Twelve hours after LPS administration, avanafil, prepared at suitable doses according to the body weights of the animals, was administered by oral gavage. Lung tissue samples of all groups were examined histopathologically and by immunochemical staining (IL-1β, iNOS, TLR4, and NF-κB). The iNOS, NLRP3, and IL-1B mRNA expression levels in the lung tissues were measured by RT-PCR. The left upper lobes of the rat lungs were dried at 70 °C for 48 h and lung water content was calculated. Result: Statistically significant increases in iNOS, NLRP3, and IL-1β mRNA expressions were observed in the rats with ALI compared to the healthy controls (p < 0.0001). Those increased expressions were reduced at both doses of avanafil (p < 0.0001). This reduction was found to be greater at 20 mg/kg (p < 0.0001). IL-1β, iNOS, TLR4, and NF-κB immunopositivity was moderate/severe in the ALI group and mild in the group with ALI + avanafil at 20 mg/kg (p < 0.05). When the wet/dry lung ratios were calculated, a statistically significant increase was seen in the ALI group compared to the healthy rats (p < 0.05). That increase was decreased with both avanafil doses (p < 0.05). Conclusion: We suggest that avanafil may prevent the progression of ALI and be effective in its treatment. We hope that this study will be supported by future clinical studies to yield a new indication for avanafil.
AtıfScopus18WoS21OpenAlex17
İncele - MakaleYalnız künye2022Scopus SJRQ2Determination of the gas/particle phase concentrations of PCBs in urban and rural atmosphere in Erzurum, Turkey
Paloluoğlu, Cihan; Bayraktar, Hanefi
Active sampling was conducted for the first time in Erzurum, Turkey, between August 2012 and January 2013, in order to investigate the presence of 82 polychlorinated biphenyls (PCBs) congeners. Urban and rural ambient air samples, including gas and particle phase atmospheric concentrations (GAPPACs) of PCBs, were collected simultaneously using high volume air sampler (HVAS) at two different sampling points of Erzurum. GAPPACs of PCB samples taken using HVAS in Palandöken Mountain Region (2565 m) and Ataturk University Campus (1870 m) were analyzed in GC–MS following appropriate extraction steps. Throughout the sampling period, total ambient air concentrations (gas phase + particulate phase) were 10 ± 6 and 27 ± 13 pg/m3 (mean) for Palandöken Mountain Region (PMR) and Atatürk University Campus (AUC), respectively. Low molecular weighted PCBs were found to be dominant in both rural an urban sampling sites. Meteorological parameters especially temperature (from Clausius–Clapeyron equation), wind direction, wind velocity, and precipitation were found to be effective on PCB concentration and distribution. The gas-particle distributions of PCBs in the summer and winter period were found to be 82% (gas phase) and 18% (particle phase) in the PMR and 90% (gas phase) and 10% (particle phase) in AUC, through Junge-Pankow adsorption model. In the light of these findings, total PCB concentrations detected in urban atmosphere (due to possible PCB sources) were observed to be higher than those determined in rural area.
AtıfScopus1WoS1İncele - MakaleAçık Erişim2022Scopus SJRQ1Improved Method for Permittivity Determination of Dielectric Samples by Free-Space Measurements
Hasar, Ugur Cem; Kaya, Yunus; Ozturk, Hamdullah; Izginli, Mucahit; Ertugrul, Mehmet; Barroso, Joaquim Jose; Ramahi, Omar M.
A new deembedding technique is proposed for relative complex permittivity epsilon(r) determination of dielectric materials using gated free-space measurements. Its three main features are 1) it does not require any formal calibration procedure (calibration-free); 2) it is position-insensitive; and 3) it extracts ripple-free epsilon(r) due to gating process. The objective function derived to determine epsilon(r) by the proposed method is validated by free-space measurements of three dielectric samples (polypropylene, polyethylene, and polyoxymethylene). Besides, the accuracy of our method is compared with the accuracy of other calibrationfree and calibration-dependent methods in the literature.
AtıfScopus49WoS36OpenAlex44İncele - MakaleAçık Erişim2022Scopus SJRQ1Determination of Propagation Constants and Wave Impedance of Non-Reciprocal Networks From Position-Insensitive Waveguide Measurements
Hasar, Ugur C.; Kaya, Yunus; Izginli, Mucahit; Ozturk, Hamdullah; Barroso, Joaquim J.; Ramahi, Omar M.; Ertugrul, Mehmet
A microwave method is proposed to determine the forward and backward propagation constants (gamma ⁺ and gamma ⁻) and the wave impedance ( z_w ) of reciprocal and non-reciprocal microwave networks whose positions are not known within their measurement cells (position-insensitive). The proposed method relies purely on analytical expressions and can also evaluate the reference plane transformation distances. Scattering parameter measurements at the X-band (8.2-12.4 GHz) of a reciprocal network (a waveguide straight) and a non-reciprocal network (a microwave phase shifter) arbitrarily positioned into their measurement cells were conducted to retrieve gamma ⁺, gamma ⁻, and z_w for validation of our method and testing its position-insensitive property. The importance of the method becomes apparent when compared to conventional methods whose accuracy is based on precise determination of the reference planes.
AtıfScopus9WoS9OpenAlex9İncele - MakaleYalnız künye2022Scopus SJRQ1Complex Permittivity and Thickness Evaluation of Low-Loss Dielectrics From Uncalibrated Free-Space Time-Domain Measurements
Hasar, Ugur Cem; Kaya, Yunus; Ozturk, Hamdullah; Izginli, Mucahit; Barroso, Joaquim Jose; Ramahi, Omar M.; Ertugrul, Mehmet
A free-space time-domain method is proposed to retrieve dielectric constant (epsilon r), conductivity (sigma e), and thickness (d) of metal-backed low-loss dielectric samples using calibration-independent reflected power peak measurements. Its algorithm is validated by numerical calculations and simulations (CST Microwave Studio) using a sine-modulated Gaussian window. A sensitivity analysis is followed to examine its performance considering the dependencies of reflected power peaks with respect to epsilon r and sigma e. Free-space time-domain measurements have been implemented after transforming frequency-domain measurements into time-domain ones to extract epsilon r, sigma e, and d of polypropylene, polyethylene, and polyoxymethylene samples.
AtıfScopus48WoS42OpenAlex43İncele - MakaleAçık Erişim2022Scopus SJRQ2Synthesis and in Vitro Toxicity Assessment of Different Nano-Calcium Phosphate Nanoparticles
Togar, Basak; Türkez, Hasan; Bakan, Feray; Arslan, Mehmet Enes; Tatar, Abdulgani; Cacciatore, Ivana; Hacimüftüoglu, Ahmet; Çadirci, Kenan; Stefano, Di Antonio; Mardinoglu, Adil
Nanoscale biomaterials are commonly used in a wide range of biomedical applications such as bone graft substitutes, gene delivery systems, and biologically active agents. On the other hand, the cytotoxic potential of these particles hasn't yet been studied comprehensively to understand whether or not they exert any negative impact on the cellular structures. Here, we undertook the synthesis of beta-tricalcium phosphate (beta-TCP) and biphasic tricalcium phosphate (BCP) nanoparticles (NPs) and determine their concentration-dependent toxic effects in human fetal osteoblastic (hFOB 1.19) cell line. Firstly, BCP and beta-TCP were synthesized using a water-based precipitation technique and characterized by X-Ray Diffraction (XRD), Raman Spectroscopy, and Transmission Electron Microscopy (TEM). The cytological effects of beta-TCP and BCP at different concentrations (0-640 ppm) were evaluated by using 3- (4,5-dimethylthiazol-2-yl) -2,5-diphenyltetrazolium bromide (MTT) and lactate dehydrogenase (LDH) assays. The total oxidative status (TOS) parameter was used for investigating oxidative stress potentials of the NPs. In addition, the study assessed the DNA damage product 8-hydroxy-2'-deoxyguanosine (8-Oxo-dG) level in hFOB 1.19 cell cultures. The results indicated that the beta-TCP (above 320 ppm) and BCP (above 80 ppm) NPs exhibited cytotoxicity effects on high concentrations. It was also observed that the oxidative stress increased relatively as the concentrations of NPs increased, aligning with the cytotoxicity results. However, the NPs concentrations of 160 ppm and above increased the level of 8-OH-dG. Consequently, there is a need for more systematic in vivo and in vitro approaches to the toxic effects of both nanoparticles.
AtıfScopus4WoS1OpenAlex3İncele - MakaleYalnız künye2022Scopus SJRQ1Feasible Extraction Method for Electromagnetic Properties of Multilayer Metamaterials With Short-Circuit Termination
Hasar, Ugur Cem; Ozturk, Gokhan; Kaya, Yunus; Bute, Musa; Karaaslan, Muharrem; Barroso, Joaquim J.; Ramahi, Omar M.; Ertugrul, Mehmet
An extraction technique is proposed for electromagnetic characterization of metal-backed multilayer metamaterial (MM) structures demonstrating reflection-asymmetric property. It uses recursive scattering parameters for direct and reversed configurations of a multilayer structure. The algorithm was validated by comparing the extracted electromagnetic properties of multilayer structures composed of different MM unit cells with those determined by one-layer-only S-parameter methods. Two-layer and three-layer multilayer structures composed of MM slabs with C-shaped and Omega-shaped rings and an FR4 material were fabricated and measured for experimental validation. A sensitivity analysis was also conducted to quantitatively evaluate the performance of our method against a small air gap between the multilayer structures and the short-circuit termination and between adjacent MM slabs within these structures. Strong agreement was observed between the resulted obtained using our method and measurements.
AtıfScopus10WoS10OpenAlex10İncele - MakaleAçık Erişim2022Scopus SJRQ1Pelletizing ultra-high molecular weight polyethylene (UHMWPE) powders with a novel tapered die and addition of high density polyethylene (HDPE): Processing, morphology, and properties
Yang, Huaguang; Yilmaz, Galip; Jiang, Jing; Xie, Jun; Langstraat, Thomas; Chu, Raymond; van Es, Martin; Garg, Priya; Turng, Lih-Sheng
The extremely high molecular weight and molecular entanglement have rendered ultra-high molecular weight polyethylene (UHMWPE) superior properties. However, poor inter-particle diffusion makes it difficult to pelletize UHMWPE powders for easy processing/handling. A novel tapered die with air cooling was proposed to pelletize UHMWPE and a UHMWPE blend with 5 wt% high-density polyethylene (HDPE) for compression molding and material characterization. The tensile strength of samples prepared with the tapered die outperformed those by the regular die or from virgin powders. The addition of HDPE further improved the tensile strength. Fourier transform infrared spectroscopy (FTIR) revealed little chain scission and the lowest amount of oxidation from the tapered die. Intrinsic viscosity (IV) measurements confirmed the negligible chain scission and showed an increment in IV for the UHMWPE/HDPE blend. Multi-angle light scattering with size-exclusion chromatography (SEC-MALS) indicated no change in the UHMWPE molecular weight distribution, but some crosslinking in the blend. Polarized optical microscopy (POM) showed that the HDPE and extrusion led to a finer UHMWPE domain size and better fusion between UHMWPE and HDPE. The combined effect of enhanced molecular chain diffusion, improved consolidation, and lower oxidation using the tapered die led to 40% improvement of tensile strength for the UHMWPE/HDPE blend.
AtıfScopus15WoS15İncele - MakaleAçık Erişim2021Effect of Liquid and Solid Vermicompost Applications on Growth and Yield of Sunflower (Helianthus annuus L.)
Gül, Volkan; Coban, Furkan; Öztürk, Erdogan
Vermicompost, which is not harmfull to the environment, and is increasing in agricultural production in terms of both gaining to the soil and benefiting the waste. This research was carried out in 2019 in Bayburt ecological conditions in order to determine the impacts of different doses of solid (250, 500 and 750 kg da(-1)) and liquid (0, 250, 500 and 750 ml da(-1)) vermicompost fertilizers on the flowering and maturation period (days), stem diameter (cm), table diameter (cm), plant height (cm), thousand weight (g) seed yield (kg da(-1)), seed internal rate (%) oil ratio (%) and oil yield (kg da(-1)) of sunflower (Helianthus annuus). In the experiment, it was determined that all parameters were statistically significant compared to p<0.01. The highest seed (218.7 kg da(-1)) and oil yield (75.9 kg da(-1)), which are the most important parameters in oil sunflower, were obtained in 750 kg da(-1) solid and 750 ml da(-1) Liquid vermicompost application (K3S3). As a result, the use of solid and liquid vermicompost application in oil sunflower together will be beneficial in obtaining the highest healthy, high quality seed and oil yield.
AtıfWoS4OpenAlex4İncele - MakaleAçık Erişim2021Expression level of the angiotensin 2 (ACE2) gene in patients with COVID-19
Dirican, Ebubekir; Aydin, Ismail Erkan; Savrun, Seyda
Purpose: Coronavirus disease-19 (COVID-19) is caused by the Severe Acute Respiratory Syndrome Coronavirus 2 (SARSCoV2). The angiotensin converting enzyme 2 (ACE2) can play a vital role in regulating the pathological changes of various diseases, including COVID-19. The aim of this study was to analyze the expression of the ACE2 gene in Turkish COVID-19 patients. Materials and Methods: Eighty COVID-19 PCR test positive patients and 80 PCR test negative healthy volunteers were included in the study. RNA isolation was carried out from all samples. The RT-PCR device was used to analyze the expression of the ACE2 gene. Results: A significant difference was found in the age, Lactate dehydrogenase (LDH), ferritin and C-reactive protein (CRP) levels of the COVID-19 patients compared to the healthy volunteers. Based on the gene expression results, it was found that ACE2 gene expression was significantly higher in COVID-19 patients compared to healthy volunteers. In patients with COVID-19, a significant difference was found between the expression of the ACE2 gene and the levels of Blood urea nitrogen (BUN), Hemoglobin (HGB), Hematocrit (HCT) and CRP. Conclusion: ACE2 gene expression was high in the COVID-19 patients and showed differences based on clinical data. Thus, the expression of ACE2 can have paradoxical effects that support the pathogenicity of SARSCoV2 but, conversely, limit viral infection. The availability of ACE2 receptors may increase the susceptibility and / or disease course of COVID-19.
AtıfWoS1OpenAlex1
İncele - MakaleAçık Erişim2021Challenges and fundamental skills for primary school teachers: Developing self-efficacy beliefs scale
Sarikaya, Ismail; Sökmen, Yavuz
The study aims to shed light on the strengths of the primary school teaching profession and the fundamental skills that a primary school teacher (PST) should have while also taking into account the views of the PSTs. However, based on the data collected, the objective is to develop a self-efficacy belief scale (SEBS) for PSTs and teacher candidates. The first stage was carried out with 80 PSTs with at least five years of professional experience. 763 PSTs and PST candidates participated in second stage of the study. A SEBS was developed for PSTs and teacher candidates in light of the obtained data. Descriptive analysis and content analysis were used for qualitative data. The categories of being a teacher in village school, administration-colleague and parent-related problems, student self-care, pedagogical qualifications, and personal and professional development were attained concerning the challenges and fundamental skills for PSTs. Scale development steps were followed second stage of the study. The SEBS containing three sub-dimensions and 19 items is assumed to be helpful and valid and reliable metrics.
AtıfWoS1OpenAlex4TR Dizin3İncele - MakaleYalnız künye2021EFFECTS OF VERMICOMPOST FERTILIZER ON THE YIELD AND OIL QUALITY IN SUNFLOWER (Helianthus annuus L.) VARIETIES
Gul, Volkan; Gidik, Betul; Girgel, Umit
This study was carried out in 2018 on an experimental field of Bayburt University in order to demonstrate the effect of different doses of vermicompost on the yield and oil quality in oilseed sunflower varieties. The experiments were carried out in randomized full-block design with three replicates. In the experiments, it was found that administering 100 kg da(-1) of vermicompost to the sunflowers yielded the best results in terms of grain yield (130.81 kg da(-1)), fat ratio (48.21%). and fatty acids parameters (saturated fatty acid ratio 15.30%. unsaturated fatty acid ratio 84.71%). In conclusion, we are of the opinion that, although there is an insufficient number of studies on oil crops. with the help of similar future studies in which vermicompost and other organic fertilizers are compounded, a humanand environment-friendly organic production can be realized by increasing the yield as well as the quality.
AtıfWoS1İncele - MakaleAçık Erişim2021Investigation of Motivated Consumer Innovativeness in the Context of Sports Industry in Terms of Gender, Age, Sports and Exercise Variables
Karatas, Ismail; Kural, Sercan
Aim: The research was carried out in order to investigate of motivated consumer innovativeness of the students of the coaching education department in the context of sports industry in terms of gender, age, actively doing sports and participation in exercise variables. Study design: In this quantitative study was conducted according to a general survey model. Methods: The universe of the research consisted of a total of 418 students (128 females and 290 males) in Bartin University Faculty of Sports Sciences, Department of Coaching Education, and the sample consisted of a total of 236 students (82 females and 154 males). Convenience sampling method, which is one of the non-probabilistic sampling approaches, was used in the selection of the sample, and the data were collected on a voluntary basis. Questionnaire form was used as data collection tool and this form consisted of two parts. The questionnaire form were located that Personal Information Form in the first part and Motivated Consumer Innovativeness Scale in the second part. Results: It was determined that there was no significant difference between the scores of the subscales within the scope of the gender variable of the participants. Also, there was no significant correlation between the age of the participants and the scores of the subscales. However, there were significant differences between the functional innovativeness and cognitive innovativeness scores of the participants in the context of the variable of actively doing sports status. In addition, there were significant differences between the functional innovativeness, hedonic innovativeness and cognitive innovativeness scores of the participants in the context of the variable of doing exercise status. Conclusion: In the research, motivated consumer innovations of the research group in the context of the sports industry were examined within the framework of gender, age, sports and exercise variables, and this situation was described as it exists. Research findings provide basic information for businesses operating in the sports industry to develop various strategies. In this context, new information has been obtained that will contribute to the literature with the research findings.
- MakaleAçık Erişim2021Relationship Between Anxiety Levels and Exercise Addiction of Higher School Students Studying in the Field of Sports Sciences During Covid-19 Pandemic Process
Çelik, Husniye; Demirel, Nurcan; Sam, Cemil Tugrulhan
Background: The purpose of this study is to determine the relationship between anxiety levels and exercise addiction of higher school students studying in the field of sports sciences during Covid-19 pandemic period. Aim: It is to determine relationship between anxiety levels and exercise addiction of higher school students studying in field of sports sciences during Covid-19 pandemic period. Methods: 184 students participated in the study. Gender, age, educational class, having regular exercise and exercise periods were learned as demographical information. In order to determine anxiety and exercise addiction levels of students, Corona virus anxiety scale and Exercise addiction scale survey were applied. In the analysis of study SPSS-24 statistical packet program was used. Results: When demographic information of students are reviewed, it is seen that gender of 51.1% of them was male and gender of 48.9% of them were female. It was determined that 44% of students were at the age of 22. 28.3% of educational class was 2nd class. While 62.5% of students did regular exercise and active sports, 37.5% of them did not deal with these. While 38% of those doing regular and active sports did not do exercises, 4.3% of them did regular exercise and active sports. When coronavirus anxiety scale applied to students is examined, it is seen that gender had impact of diziness, dullness, lose of appetite, and nausea and that situation of doing regular exercises and active sports had impact on lack of appetite and nausea. When exercise addiction scale applied to students is examined, it is seen that doing regular exercise and active sports and its period had impact on hyper focus and mood swings. When relationship between coronavirus anxiety and exercise addiction levels of students are reviewed, it was seen that postponement of individual social needs and conflict had negative impacts on the person's anxiety level, drowsiness, loss of appetite, and nausea. Conclusion: When coronavirus anxiety levels and exercise addiction of students during Covid-19 pandemic period are examined, the process they are in have had various negative impacts on the students. Gender of students studying in the field of sports sciences affects their anxiety status. At the same time, regular exercise students do and its period plays a role in relation to focusing and emotional changes.
- DüzeltmeYalnız künye2021INNOVATIVE FLOW RISK ASSESSMENT WITH CLIMATE CHANGE PERSPECTIVE IN YESILIRMAK BASIN (vol 29, pg 514, 2020)
Serencami, Ugur; Dabanli, Ismail
- MakaleAçık Erişim2021Scopus SJRQ3Androsace azizsancarii sp. nov. (Primulaceae): a new species from northeastern Anatolia, Turkey
Sefali, Abdurrahman
Androsace azizsancarii (Primulaceae) is described and illustrated as a new species from Bayburt Province in northeastern Anatolia, Turkey. Diagnostic morphological characteristics, a full description and a distribution map are provided. The new species is morphologically closest to Androsace albana, A. multiscapa and A. villosa, but it is easily distinguished from these species by indumentum, leaf, flower and seed characters.
AtıfWoS6OpenAlex3İncele - MakaleAçık Erişim2021Comparison 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.
AtıfOpenAlex1İncele - Derleme MakaleAçık Erişim2021The 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.
AtıfWoS3OpenAlex9TR Dizin7İncele