848 research outputs found

    Bottom trawl fishery discards in the Black Sea coast of Turkey

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    The purpose of this study is to determine the amount of bycatch and discardfish caught by bottom trawlers used in the Black Sea coasts of Turkey anddiscard changes depending on the depth. The study was conducted during theSeptember 2009 – April 2010 fishing season. Twenty-one bottom trawleroperations were sampled and the catch composition was determined. A total of 26species were caught, which included 22 species of fish, 2 species of arthropods,1 species of gastropods and 1 species of bivalves. Two of these were targetspecies (Mullusbarbatus, Merlangius merlangus), while 25 species werediscarded including trash fish and specimens below the legal size. A total of2142.76 kg of biomass was caught during the operations, of which 53.99 % bycatch.The weighted discard rate was determined as 42.06% and two different groupswere identified in discards (T1: 10-57 m, T2: 72-118 m) based on the depth. Significantdifferences were identified between these depth groups (p0.05) between theecological parameters of landings

    Parents and children during the COVID-19 quarantine process: Experiences from Turkey and China

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    This paper reports Turkish and Chinese parents’ experiences with their 3-6-year-old children during the COVID-19 quarantine process. Thirteen Turkish and 11 Chinese parents participated in a study that employed semi-structured interviews to examine participant self-perceived experiences. Findings show that the study revealed many commonalities in the experiences of Turkish and Chinese parents with their children during the COVID-19 quarantine process. Cultural differences between parents did not appear to significantly reflect the responses of parents during this extraordinary period. Parents mostly described difficulties with home quarantine. Most parents stated that their daily schedule and routines had changed as a result of home quarantine. Parents also said that they were unaware of their children’s developmental progress and the extent to which their children had grown up before the quarantine. Parents shared both positive and negative experiences during the process. Since the quarantine process is an extraordinary experience for all family members, parents should be encouraged to put those positive experiences and acquisitions into their future life

    Strong coupling constants of bottom and charmed mesons with scalar, pseudoscalar and axial vector kaons

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    The strong coupling constants, gDsDK0g_{D_{s}DK_0^*}, gBsBK0g_{B_{s}BK_0^*}, gDsDKg_{D^{\ast}_{s}D K}, gBsBKg_{B^{\ast}_{s}BK}, gDsDK1g_{D^{\ast}_{s}D K_1} and gBsBK1g_{B^{\ast}_{s}BK_1}, where K0K_0^*, KK and K1K_1 are scalar, pseudoscalar and axial vector kaon mesons, respectively are calculated in the framework of three-point QCD sum rules. In particular, the correlation functions of the considered vertices when both B(D)B(D) and K0(K)(K1)K_0^*(K)(K_1) mesons are off-shell are evaluated. In the case of K1K_1, which is either K1(1270)K_1(1270) or K1(1400)K_1(1400), the mixing between these two states are also taken into account. A comparison of the obtained result with the existing prediction on gDsDKg_{D^{\ast}_{s}D K} as the only coupling constant among the considered vertices, previously calculated in the literature, is also made.Comment: 20 Pages, 3 Figures and 8 Table

    Patterns of COVID-19-related headache: A cross-sectional study

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    Background: Headache is the most common COVID-19-related neurological symptom. We investigated the characteristics of COVID-19-related headache and their relationship with clinical severity in Kirs , ehir Province, Turkey. Methods: This cross-sectional study prospectively enrolled 226 COVID-19-positive patients who developed headache during acute infection. Demographic data, headache characteristics, and infection symptoms were recorded. The clinical severity of COVID-19 was documented in each participant. Result: New-onset COVID-19-related headaches lasting 4 days were reported in 164 patients (72.5 %); these were mostly bilaterally or localized to the forehead (58.4 %), pulsating (42.5 %), moderate to severe intensity (30.1 %), with a partial response to paracetamol (23.5 %). The other 62 patients (27.4 %) reported headaches before COVID-19. Their COVID-related headaches were fiery type (p = 0.025), of very severe intensity (p = 0.008), had a holocranial distribution (p = 0.004), and were less response to paracetamol (p = 0.003); the headaches were significantly more frequent after COVID-19 than before COVID-19. Older age, high body mass index, and low education level were significantly higher in the severe group (all p < 0.001). Female sex (p = 0.019) and being a healthcare worker (p < 0.001) were significantly more frequent in mild cases. Conclusions: Bilateral, prolonged, moderate to severe headaches that were analgesic resistant are more frequent in patients with COVID-19 infection. Further study should examine whether the headache characteristics distinguish COVID-19-related headaches from other types, particularly in asymptomatic subjects

    Assessment of procedure related anxiety and depression in oncologic patients before F-18 FDG PET-CT imaging

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    Background: The aim of this study was to study objectively the level of anxiety and depression in patients undergoing positron emission tomography-computed tomography (PET-CT).One hundred and forty four oncologic out-patients (76 male, 68 female) were included in this study. Methods: All patients were referred to Nuclear Medicine Department for Fluorine-18 fluorodeoxyglucose (F-18 FDG) PET-CT imaging for the assessment of their malignant or possibly malignant diseases. The Hospital Anxiety Depression Scale and the State and Trait Anxiety Inventory I and II were used to evaluate the anxiety and depression levels in these patients. Results: The mean anxiety and depression scores of The Hospital Anxiety Depression Scale prior to F-18 FDG PET-CT were 9.2 ( ± 3.8) and 6.6 ( ± 3.4), respectively. The mean state and trait anxiety scores of the State and Trait Anxiety Inventory I and II prior to F-18 FDG PET-CT were 40.4 (± 8.5) and 46.62 ± 7.8, respectively. The Hospital Anxiety Depression Scale and the State and Trait Anxiety Inventory I and II anxiety scores were found to be significantly higher in female patients, smokers and in patients with higher stage disease. Conclusion: Our results suggest that F-18 FDG PET-CT imaging may at least contribute to patient's baseline anxiety which is already generated by being an oncology patient, and thus nuclear medicine physicians should handle the patients with extra care to minimize this affect. © 2015, Umut Elboga, et al

    Perception of ‘English’ and Motivation in Learning English

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    This study aims to present high school students’ perception of “English” through the impressions and images and the effect of these perceptions on their motivation in learning English. This qualitative study is based on the data about students’ metaphors and the focus group interview to determine their effect on the students’ motivation. The research group for metaphors consists of 128 high school students from four different grades. 79 metaphors were collected and grouped under 12 categories. In addition, two different focus group interviews are held with 7 students having negative and positive perspectives to determine the effect of these perceptions on students’ motivation in learning English. According to the analysis of the data from focus group interviews, students mostly perceive “English” as a target language to learn rather than a foreign language, spoken by a definite society or belonging to a culture. The results of metaphor study also indicate that the students regarding “English” positively tend to have a higher participation and motivation in comparison to the students having negative perceptions
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