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Taha Toros Arşivi, Dosya No: 173-Koç AilesiUnutma İstanbul projesi İstanbul Kalkınma Ajansı'nın 2016 yılı "Yenilikçi ve Yaratıcı İstanbul Mali Destek Programı" kapsamında desteklenmiştir. Proje No: TR10/16/YNY/010

Prevalence of Becker Nevus in Young Men

Background and Design: Becker nevus (BN), characterized by sharply and irregularly bordered, unilaterally localized, hyperpigmented macules and patches which can go along with hypertrichosis, is a kind of hamartomatous lesion that predominantly affects males 4-6 times more frequently than females. It is usually seen in peripubertal period. There are scarce epidemiological data on BN and the prevalence in our country is also unknown. In this prospective, cross-sectional study, we aimed to determine the prevalence of BN among young adult males in Turkey.Materials and Methods: 8207 male candidates from different regions of Turkey who would be selected as a student in a governmental school and were referred to the dermatology outpatient clinic between March 2012 and August 2012, were included in our study. In addition to comprehensive medical examination, candidates were also inspected for the presence of BN, its localization, the asociation with hypertrichosis, and the findings were recorded.Results: The mean age of the candidates was 20.02±1.40 (range: 18-22) years and the mean age at BN onset was 12.2. BN was detected in 68 out of 8207 candidates (two different localizations in one subject). The prevalence of BN was calculated as 0.82%. The distribution of BN localization was as follows: mostly on the pectoral region ( 24.64%), and in decreasing order, on the scapular region (23.18%), shoulder (18.84%), infrascapular region (17.39%), arm (5.80%), abdomen (5.80%) and the thigh (4.35%). Hypertrichosis was present on 34 out of 69 BN (49.2%) that were found in 68 subjects.Conclusion: In our study, it was determined that BN was mainly localized on the pectoral and scapular regions, the prevalence was 0.82% and, 49,2% of the lesions were hypertrichotic

Effect of different land use on soil respiration in winter

The effect of different land uses on soil respiration was investigated in winter 2009 in black locust, grassland, apple orchard (apple trees and grass) and walnut areas in Seyitler Village, Artvin, Turkey. Soil respiration was measured in December by the soda-lime (NaOH, KOH) technique. Mean daily soil respiration ranged from 0.29 to 1.26 g C m-2 d-1 . Mean daily soil respiration in black locust was greater than the other areas. Soil respiration was different in the investigated four vegetation types. Established difference was non significant and correlations were negative among soil respiration, soil moisture and soil temperature. These results show that black locust has higher soil biological activity compared to the other areas in this season

N mineralization potential under different land uses in Tutunculer in Artvin,Turkey

This study was conducted to investigate mineralization potensial of different land uses in the area of Tutunculer in Artvin in 2011. For this purposes, soil samples were taken from surface 0-15 cm depth in young scothpine stands, scothpine and spruce stand and adjacent grassland sites with similar parent material, slope and aspect. Samples were subjected to standard incubition technique in labratory conditions (60% MSK and 25 0C). Mineralization rate different significantly among sites. Nitrification rate higher in grassland sites compared to other sides (149.46 N kg/ha 63 day-1)

Vieussens’ arterial ring: a rare coronary variant anatomy

PURPOSEWe aimed to evaluate Vieussens’ arterial ring (VAR) variants by consecutive coronary computed tomography (CT) angiography examinations.METHODSWe retrospectively evaluated the presence of VAR in a total of 3443 consecutive coronary CT angiography examinations performed between November 2010 and January 2015. CT examinations were performed with a 64-row multidetector computed tomography (MDCT) scanner. All CT angiography images were evaluated for the presence and morphologic features of VAR subtypes. VAR variants were classified into four subgroups.RESULTSEleven VAR variations (3.19‰) were identified. Type 1A was the most common VAR type (n=8), followed by Type 2 (n=2) and Type 3 (n=1). Type 1B was not detected.CONCLUSIONAlthough VAR variation is less frequently detected with coronary CT angiography than in previously reported anatomic series, coronary CT angiography is quite effective to reveal VAR subtypes and other relevant cardiocoronary anomalies

Retrospective examination of endometrial sampling results in women with abnormal uterine bleeding

Background: Abnormal uterine bleeding (AUB) is among the most significant and frequent causes of admission to the gynecology outpatient clinic. AUBs may manifest as the earliest sign of endometrial cancer. For the early detection and treatment of endometrial cancer, careful examination of AUBs is crucial. Aim: The study was conducted to retrospectively evaluate the histopathological results of probe curettage materials applied to women who applied to the gynecology clinic for AUB and were hospitalized with the complaint of AUB. Material and Methods: In the retrospective study planned between 2020 and 2021, all endometrial biopsies from 638 women with AUB reported to the gynecology clinic were reviewed and analyzed. The data were obtained from the archives of our hospital's gynecology and obstetrics clinic and pathology clinic. Results: 638 cases were analyzed. The mean age of the patients was 47.94±9.53 years. Malignant pathology was detected in 20 cases (3.13%). Nineteen of these cases were seen in postmenopausal women. The most common pathology was found to be benign polyps at a rate of 19.91%. It was the most common benign pathology in women pre- and postmenopausal. Adenocarcinoma was detected in 13 (2.03%) postmenopausal cases while in only 1 (0.16%) of the premenopausal women. Conclusion: Since more malignant pathologies are observed in postmenopausal women, women with asymptomatic or AUB complaints should be carefully monitored, and endometrial evaluation should not be skipped. Endometrial biopsies are valuable in the early detection of pre-cancerous and cancerous endometrial lesions, especially in postmenopausal women

Matematik Destekli Yoğunluk Konusu Öğretiminin Öğrencilerin Başarıları ve Fen ve Matematik Tutumları Üzerindeki Etkisi

DergiPark: 699450tredFen ve matematik entegrasyonu öğrencileri motive etmekte, tutumlarını geliştirme ve başarıları ile kavramsal anlamalarını arttırmaktadır. Bu çalışmanın amacı matematik destekli yoğunluk konusu öğretiminin altıncı sınıf öğrencilerinin matematik ve fen tutumları ile yoğunluk konusuna ilişkin başarı ve muhakeme seviyeleri üzerindeki etkisini incelemektir. Çalışma kontrol gruplu öntest-sontest deneysel desen kullanılarak tasarlanmıştır. Çalışmaya 2018-2019 öğretim yılında Ankara’da bir devlet okulunun altıncı sınıfında öğrenim görmekte olan ve rastgele örnekleme ile biri deney (n=35) biri kontrol (n=37) grubu olarak atanmış iki sınıf katılmıştır. Bulgular deney grubundaki öğrencilerin kontrol grubundakilere nazaran yoğunluk konusunda daha başarılı olduklarını ve matematiğe yönelik daha olumlu tutumlara sahip olduklarını göstermektedir. Hem deney hem de kontrol grubunda öğrencilerin fene yönelik tutumları anlamlı bir biçimde artmıştır. Bunun yanı sıra deney grubu öğrencilerinin yoğunluk ile ilgili açık uçlu sorulara cevap verirken doğru cevap ve bu doğru cevaplar için bilimsel düşünceye uygun tam açıklamalarda bulunma oranının kontrol grubu öğrencilerinden daha fazla olduğu görülmüştür. Matematik destekli yoğunluk konusu öğretiminin öğrencilerin yoğunluk konusuna ilişkin akademik başarı ve kavramsal anlamaları ile matematik tutumlarını olumlu yönde etkilediği sonucuna ulaşılmıştır. Fen bilimleri konuları içerisinde matematiksel içerik açısından zengin pek çok konu bulunduğu göz önüne alınarak fen ve matematik öğretmenlerinin işbirliği ile teknoloji destekli fen ve matematik entegrasyonu için çalışmaları önerilmiştir

Relationship among MIF, MCP-1, viral loads, and HBs Ag levels in chronic hepatitis B patients

Background/aim: To determine whether macrophage migration inhibitory factor (MIF) and monocyte chemoattractant protein-1 (MCP-1) levels in patients with hepatitis B (HB) are different than in normal individuals and whether the HB surface antigen (HBs Ag) level and viral load are correlated with each other and with the two aforementioned parameters. Materials and methods: Sera were obtained from 52 chronic active HB (CAHB) patients and 33 healthy controls, and their MIF and MCP-1 levels were measured. Statistical analyses were performed. A value of P < 0.05 was considered statistically significant. Results: The MIF and MCP-1 values of the control group were increased compared to those of the CAHB group. The MIF and MCP-1 levels were negatively correlated with HBs Ag levels and viral loads. The MIF and MCP-1 levels were positively correlated. The HBs Ag levels and the log10 of the viral loads were positively correlated. Conclusion: We conclude that the negative correlation of MIF and MCP-1 with viral load and HBs Ag levels may be due to T-cell deficiency, antinuclear antibody seropositivity, and/or inhibition of chemokine ligand 2 receptors by viral antigens. More studies with a greater number of subjects are needed to evaluate the potential role of MIF and MCP in CAHB