CCD UBV(RI)CUBV(RI)_{C} Photometry of Twenty Open Clusters

Fundamental astrophysical parameters have been derived for 20 open clusters (O\!Cs) using CCD~$U\!BV\!(RI)_C$ photometric data observed with the 84~cm telescope at the San Pedro M\'artir National Astronomical Observatory, M\'exico. The interstellar reddenings, metallicities, distances, and ages have been compared to the literature values. Significant differences are usually due to the usage of diverse empirical calibrations and differing assumptions, such as concerning cluster metallicity, as well as distinct isochrones which correspond to differing element-abundance ratios, internal stellar physics, and photometric systems. Different interstellar reddenings, as well as varying reduction and cluster-membership techniques, are also responsible for these kinds of systematic differences and errors. The morphological ages, which are derived from the morphological indices ($\delta V$ and $\delta 1$) in the CM diagrams, are in good agreement with the isochrone ages of 12 O\!Cs, those with good red clump (RC) and red giant (RG) star candidates. No metal abundance gradient is detected for the range $6.82 \leq R_{GC} \leq 15.37$ kpc, nor any correlation between the cluster ages and metal abundances for these 20 O\!Cs. Young, metal-poor O\!Cs, observed here in the third Galactic quadrant, may be associated with stellar over-densities, such as that in Canis Major (Martin et al.) and the Monoceros Ring (Newberg et al.), or signatures of past accretion events, as discussed by Yong et al. and Carraro et al.Comment: 68 pages, 33 figures, 15 tables. Accepted in New Astronom

Agents ısolated at the mycology laboratory of Selcuk University, from patients with an ınitial diagnosis of dermatophytosis between 1994 and 2000

Amaç:Konya bölgesinde dermatofit dağılımının araştırılması Yöntem: Bu çalışmada 1994-2000 yılları arasında dermatoloji kliniğinde dermatofitoz ön tanısı almış olan 1143 hastanın mantar kültürlerine ait kayıtları Selçuk Üniversitesi Tıp Fakültesi Mikoloji Laboratuvarı'nda retrospektif olarak incelenmiştir. Bulgular: Bu hastalardan alınan örneklerin 250'sinde (%21.9) kültürde üreme saptanmıştır. Üreyen mantarların yerleştikleri vücut bölgelerine göre dağılımları incelendiğinde en sık rastlanan tinea türü Tinea pedis (%38.4) olarak saptanmıştır. Bunu sırası ile T.unguium (%32.4), T.corporis (%10.4), T.manum (%8), T.inguinalis (%7.2), T.capitis (%3.6) izlemiştir. Olgulardan izole edilen mantar türleri ise sıklık sırasına göre şöyledir; Trichophyton rubrum (%65.2), T.mentagrophytes (%18.8), Epidermophyton floccosum (%6.4), Microsporum canis (%3.6), T.tonsurans (%2.4), T.verrucosum (%2), M.audouini (%0.8), T.schoenleinii (%0.4), T.violaceum (%0.4). Sonuç: Konya bölgesinde en sık rastlanan tinea türü T.pedis, en sık izole edilen etken ise olarak saptanmıştır.Objective: To investigate the distribution of dermatophytes in Konya region. Methods: In this study the mycological culture results of 1143 patients at Mycology Laboratory of University of Selcuk, Faculty of Medicine with a prediagnosis of dermatomycosis from the clinic of dermatology between 1994 and 2000 were investigated. Results: Cultures of250 (21.9%) patients werepositive. Distribution of dermatophytes accordingto localization was as follows: Tinea pedis (38.4%), T.unguium (32.4%), T.corporis (10.4%), T.manum (8%), T.inguinalis (7.2%), and T.capitis (3.6%). The species of dermatophytes isolated from the cultures were Trichophyton rubrum (65.2%), T.mentagrophytes (18.8%), Epidermophyton floccosum (6.4%), Microsporum canis (3.6%), T tonsurans (2.4%), T verrucosum (2%), M.audouini (0.8%), T schoenleinii (0.4%) and T violaceum (0.4%). Conclusion: T.pedis was the most frequently diagnosed form of tinea and T rubrum was the most frequently cultured etiologic agent in our region