Browsing by Author "Seyit AYDIN"

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    Alterations of Growth Performance and Blood Chemistry in Nile Tilapia (Oreochromis Nuoticus) Affected by Copper Sulfate in Long-Term Exposure
    (2015-03-01) Ekrem MUTLU; Banu KUTLU; Seyit AYDIN
    Bu çalışmamızın amacı bakır sülfatın (CuSO4.(5H2O)) Nile Tilapia (Oreochromis niloticus) üzerindeki etkilerini belirlemektir. Bakır sülfatın Nile tilapia üzerindeki medyan (LC50) ve minimum (LC1O) ölümcül konsantrasyonları akut testlerle belirlenmiştir. Bakır sülfatın 48, 72 ve 96 saatlerdeki LC50 değerleri sırası ile 13,15, 12,95 ve 12,85 mg/L idi. Aynı sürelerde elde edilen LC10 değerleri de sırası ile 12, 11 ve 9,5 mg/L idi. 1,5 mg/L bakır sülfat dozunun Nile tilapia'da büyüme, bütüncül klinik görünüm ve kan biyokimyası parametreleri üzerindeki etkileri 35, 65 ve 95 günlük maruziyetler üzerinden değerlendirilmiştir. Kontrol ve bakır sülfat uygulama grupları arasında büyüme oranları arasındaki fark 35, 65 ve 95 gün sonunda anlamlı değildi (P>0,05). 1,5 mg/L'lik bakır sülfat konsantrasyonuna sürekli maruziyet Nile tilapia'da 35, 65 ve 95 günlük süreler sonunda toplam protein, albümin, aspartat aminotransferaz (AST), alanin aminotransferaz (ALT), glikoz (95 günlük gruptaki artış dışında), magnezyum (Mg+²), kalsiyum (Ca+²), demir (Fe+²), potasyum (K+), sodyum (Na+1), klor (Cl-) ve fosfatın serumdaki değerlerini düşürmüştür. Kolesterol, düşük yoğunluklu lipit (LDL), trigliserit, globülin, kreatinin, alkalin fosfataz (ALP), total bilirubin, direkt bilirubin, ürik asit ve üre azotu (BUN) konsantrasyonları bakır sülfata maruz kalan balıkların serumlarında yükselmiştir
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    TRDizin
    Determination of Quality Standards for Management and Administrative Services in Science Teacher Training Programs
    (2021-01-01) Seyit AYDIN; Adem YILMAZ
    A country's competitiveness and development efforts are determined by the qualified manpower it has trained. Reaching qualified manpower is possible with a good higher education. At this point, quality and competencies of higher education institutions come to the fore. In this direction, families are constantly researching for their children to have a good university education and take into account quality indicators to make a good choice. In this study, science teacher training programs, which are higher education programs, were examined in terms of quality standards for management and administrative services. A quality standard scale has been developed within the scope of the research. The survey method, which is one of the quantitative research methods, was used in the research process. While determining the research sample, criterion sampling and appropriate sampling types were preferred. 1352 people participated in the study voluntarily and willingly. As a data collection tool, a Likert-type scale with 7 factors and 58 items was used by the researchers. The data obtained within the scope of the research were analyzed using SPSS 20.0 and LISREL 9.2 package programs. As a result of the exploratory factor analysis of the developed scale, it was seen that the factor loads varied between .402 and .907. The Kaiser-Meyer-Olkin value was determined to be .817. It was found that the total variance explained was 55.93% and Cronbach's Alpha value was .907. As a result of the confirmatory factor analysis, it was found that X2/Df value was 1.93, RMSEA value was .04, NNFI value was .95, SRMR value was .07 and AGFI value was .75. According to the results of the research, a valid and reliable scale was developed and it was determined that the stakeholder opinions (prospective teachers, teachers, faculty members) contributed to the quality standards at “a very significant” level.