Guncan A.,Ordu University |
Gumus E.,Hazelnut Research Institute
Journal of Economic Entomology | Year: 2017
The filbert aphid Myzocallis coryli (Goeze) is a serious pest of hazelnut in North America, Italy, Spain, and Turkey. To evaluate the resistance of hazelnut to this insect, aphids were reared on five major cultivars ('Tombul,' 'Palaz,' 'Cąkýldak,' 'Fosą,' and 'Mincane') under laboratory conditions. The developmental times of preadult and adult stages, total longevity, reproduction, and life table parameters were analyzed according to age-stage, two-sex life table theory, in which the stage differentiation and variable developmental rates among individuals could be described. The intrinsic rate of increase (r) and finite rate of increase (k) varied among the cultivars. The highest values were found for aphids reared on Cąkýldak (r=0.2019 d-1, λ1.2238 d-1), which did not differ significantly from Mincane (r=0.1957 d-1, λ1.2161 d-1), whereas these parameters were lowest for Palaz (r=0.1622 d-1, λ1.1761 d-1) and Fosą (r=0.1677 d-1, λ1.1826 d-1). Based on longer preadult development time, shorter adult longevity, shorter reproductive period, together with the demographic parameters, Palaz and Fosą provide a relatively unfavorable environment for the filbert aphid. The results obtained from demographic data together with estimates of pest growth potential generated by computer projection based on age-stage, two-sex life table theory, demonstrate that both Palaz and Fosą are resistant cultivars for M. coryli and can be considered in hazelnut integrated pest management and hazelnut breeding programs. © 2017 The Authors.
Celik Y.,Ordu University
AIP Conference Proceedings | Year: 2017
In this paper, we define union and intersection operations of fuzzy soft graphs and present some important properties related of them. © 2017 Author(s).
Korkmaz M.,Ordu University
AIP Conference Proceedings | Year: 2017
In this study, for lactation curve, spline interpolations, alternative modeling passing through exactly all data points with respect to widely used Wood model applied to lactation data were be discussed. These models are linear spline, quadratic spline and cubic spline. The observed and estimated values according to spline interpolations and Wood model were given with their Error Sum of Squares and also the lactation curves of spline interpolations and widely used Wood model were shown on the same graph. Thus, the differences have been observed. The estimates for some intermediate values were done by using spline interpolations and Wood model. By using spline interpolations, the estimates of intermediate values could be made more precise. Furthermore, by using spline interpolations, the predicted values for missing or incorrect observation were very successful according to the values of Wood model. By using spline interpolations, new ideas and interpretations in addition to the information of the well-known classical analysis were shown to the investigators. © 2017 Author(s).
Belen C.,Ordu University
Soft Computing | Year: 2017
We consider the concept of weighted mean summability method of improper Riemann integrals of fuzzy-number-valued functions with the help of fuzzy Riemann–Stieltjes integrals introduced by Ren and Wu (Int J Theor Phys 52:2134–2151, 2013). The convergence of the improper Rieman integral implies its summability by weighted mean method, but inverse requirement is not true in general and is realized by means of supplementary conditions known as Tauberian conditions. © 2017 Springer-Verlag Berlin Heidelberg
Ergun S.,Ordu University |
Oztuzcu S.,University of Gaziantep
Tumor Biology | Year: 2015
Competing endogenous RNAs (ceRNAs) are RNA transcripts which can communicate with each other by decreasing targeting concentration of micro-RNA (miRNA) with the derepression of other messenger RNAs (mRNAs) having the common miRNA response elements (MREs). Oncocers are ceRNAs taking crucial roles in oncogenic pathways processed in many types of cancer, and this study analyzes oncocer-mediated cross-talk by sponging microRNAs (miRNAs) in these pathways. While doing this, breast, liver, colon, prostate, gastric, lung, endometrium, thyroid and epithelial cancers and melanoma, rhabdomyosarcoma, glioblastoma, acute promyelocytic leukemia, retinoblastoma, and neuroblastoma were analyzed with respect to ceRNA-based carcinogenesis. This study defines, firstly, oncocers in the literature and contains all oncocer-related findings found up to now. Therefore, it will help to increase our comprehension about oncocer-mediated mechanisms. Via this study, a novel perspective would be produced to make clear cancer mechanisms and suggest novel approaches to regulate ceRNA networks via miRNA competition for cancer therapeutics. [Figure not available: see fulltext.] © 2015, International Society of Oncology and BioMarkers (ISOBM).
Cikrkci O.,Ordu University
Computers in Human Behavior | Year: 2016
The aim of this meta-analysis study was to investigate the effect of internet use on the components of well-being. Life satisfaction, well-being and self-esteem were evaluated as markers of well-being and their interaction with internet use was assessed. Publications in the literature were collated (N = 281) by investigating articles related to the topic. In light of criteria determined by the researcher, 23 studies were included in the analysis. This study comprised a sample group of 21,054 individuals. The mean age of the sample group was calculated as 20.32 years. According to the results of the analysis using the random effect model, internet use has a significant effect on well-being at low levels (k = 28, r = −0.18, p < 0.001). The components of well-being were used as moderator variables. Results of moderator analysis showed that the well-being components were not significant moderator variables of the effect of internet use on well-being (Qb = 1.34, df = 2, p > 0.05). According to the results of the research, internet use is an effective variable on well-being. The results are discussed in light of the literature. © 2016 Elsevier Ltd
Aydin M.,Ordu University
Turkish Journal of Fisheries and Aquatic Sciences | Year: 2011
Basic biological information of the puffer fish Lagocephalus sceleratus is presented based on a 2 year study. A sample of 656 fish with total lengths ranging from 12.5 to 65 cm was collected from commercial catches and fishing line at the Antalya Bay between December 2008 and January 2010. Males made up 51.3% whereas females 48.7% of the population. The length - weight relationship was given by TW = 0.012 TL 2.979. The Bhattacharya method was used to separate cohorts from a length frequency distribution obtained pooling monthly samplings. The von Bertalanffy growth model was used to fit growth curve to the length frequency data. The von Bertalanffy growth equation were L t=126.11(1-e -0.099(t+1.4349)). The spawning takes place during early summer. Relative fecundity was 780.8±171.8 eggs g -1the total body weight and average egg size was 640 μm in diameter in June. Analysis of the diet composition showed that the fish is carnivorous and crustaceans are the major food items for L. sceleratus. © Published by Central Fisheries Research Institute (CFRI) Trabzon, Turkey in cooperation with Japan International Cooperation Agency (JICA), Japan.
Tas B.,Ordu University
Energy Education Science and Technology Part A: Energy Science and Research | Year: 2011
Civil and Kacali streams are one of the most important streams of Ordu city. However, there were too much pollution in down parts of these streams due to environmental vastes, coming from sewages and agricultural activities. When water flow decreased in dry seasons, eutrophication was observed following water blooms in these streams. Extreme eutrophications occurred in Civil and Kacali streams at the end of spring and early summer in 2009. Because of excessive algal blooms, dense green masses covered a large portion of the stream surfaces in the study term. In the examination of both the stream, Hydrodictyon reticulatum (Linnaeus) Bory de Saint-Vincent (water net) from the filamentous green algae let to excessive water blooms. This alga is a species that reduces oxygen level and disrupts the appearance in this types of watfers where are stagnant and shallow. Dissolved oxygen was determined as 4.76 mg/L in Civil Stream and 7.23 mg/L Kacali Stream in blooming time. In during eutrophication, sampling was made from the two streams and some physico-chemical and biological properties were examined. Results of analysis were compared with standards of the Turkish Water Pollution Control Regulation (WPCR). Phosphorous which is the important nutrient and causes water bloom was found at high ratio in the stream waters. In terms of these parameters, the streams have water quality at fourth category. It was determined that Civil Stream was much more polluted than Kacali Stream. © Sila Science.
Erbil N.,Ordu University
Sexuality and Disability | Year: 2013
The cross-sectional study was conducted to examine the relationship between sexual function, body mass index and body image among women. 193 women were included in the sampling. The data was collected using questionnaire form, the Female Sexual Function Index (FSFI), and Body Image Scale (BIS). The mean of the total FSFI score was 22.62 (SD 6.54, range 2.00-32.00). The mean of the BIS score was 145.29 (SD 17.73, range 93-200). The mean of the body mass index (BMI) was 24.50 (SD 3.75, range 16.05-35.56). Of the six sexual function parameters, pain (r = 0.044) did not correlate with BIS, while desire (r = 0.351), arousal (r = 0.335), lubrication (r = 0.242), orgasm (r = 0.335), satisfaction (r = 0.339) and FSFI total (r = 0.343), all p < 0.001 did. In according to BMI groups of women were observed significant difference in BIS scores (p = 0.007), but FSFI scores were not (p > 0.05). In conclusion, positive body image of women had a positive effect on their sexual function. Overweight and obese based on BMI among women had a negative effect on woman's body image, but had no effected on woman's sexual function. © 2012 Springer Science+Business Media, LLC.
Erbil N.,Ordu University
Sexuality and Disability | Year: 2011
Female sexual dysfunction is a common health problem for many women all over the world. This study was constructed to determine risk factors and prevalence of female sexual dysfunction among Turkish women, in Ordu province of Turkey between May 2008 and December 2008. Four hundred and twenty-five married women, between 18 and 56 years of age, who consented to participate, were included in the study. Data was collected by using a questionnaire form and the Female Sexual Function Index. The prevalence of female sexual dysfunction was 52.2%. The risk factors for female sexual dysfunction were, low education level of the woman (odds ratio [OR] = 1.830, 95% confidence interval [CI] = 1.088-3.078), low education level of the husband (OR = 1.734, 95% CI = 1.094-2.750), being brought up by parents with restrictive attitudes (OR = 1.558, 95% CI = 1.001-2.424), and having genital infections or symptoms (OR = 1.925, 95% CI = 1.213-3.055). © 2011 Springer Science+Business Media, LLC.