3,310 research outputs found

    Images of “the other”: “the turks” in Greek Cypriot children’s drawings

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    The present study investigated how Greek-Cypriot children portray themselves, a Greek-Cypriot child and a Turkish child of the same age in terms of size, details shading and differences. Participants (boys, n = 14, girls, n = 20) aged 6 and 11 from a school in Limassol were asked to draw themselves, a Greek child and a Turkish child. Participants drew themselves significantly taller than a Greek-Cypriot child. The smallest figure drawn was the Turkish child. Furthermore, the Turkish figure drawn had darker shading, mostly a male- looking person and often included items such as a weapon. The results are discussed in line with studies on the analysis of children’s drawings as a reflection of their feelings towards “others” in ethnically divided societies

    A Logarithmic Conformal Field Theory Solution For Two Dimensional Magnetohydrodynamics In Presence of The Alf'ven Effect

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    When Alf`ven effect is peresent in magnetohydrodynamics one is naturally lead to consider conformal field theories, which have logarithmic terms in their correlation functions. We discuss the implications of such logarithmic terms and find a unique conformal field theory with centeral charge c=2097c=-\frac{209}{7}, within the border of the minimal series, which satisfies all the constraints. The energy espectrum is found to be \newline E(k)k137logkE(k)\sim k^{-\frac{13}{7}} \log{k}.Comment: Latex, 9 page

    Accuracy of Visual inspection with acetic acid (VIA) for early detection of cervical dysplasia in Tehran, Iran

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    Objective: To evaluate the accuracy of visual inspection with 5 acetic acid (VIA) when used to detect cervical cancer and its precursors. Methods: The study population included women attended Family Planning and Gynecological Clinic in Bagher Abad Health Center and Mirza Koochak Khan Hospital for regular cervical screening tests. After obtaining informed consent from each woman, VIA was performed. One hundred with a positive VIA test and 100 women with a negative VIA test were randomly selected for this study. Cytology and colposcopy examination were performed for all 200 cases and cervical biopsies were conducted for those individuals showing abnormal colposcopic findings. Results: Nine cases in VIA-positive group and two cases in VIA-negative group had an abnormal cytology. Ninety five women in the VIA-positive group and 25 in the VIA-negative group had abnormal colposcopic findings. From biopsy examination, 67 (71) of cases in the VIA-positive group and 3 (12) cases in the VIA-negative group had a final diagnosis of dysplasia. Among biopsied samples, only 7 cases of VIA-positive group showed abnormal result and the remaining were normal. Based on these results, VIA test sensitivity and specificity were 95.7 and 44.0 respectively, while they were 10 and 92 for cytology tests. Conclusions: The results of this study indicate that although VIA is a sensitive screening test for detection of cervical dysplasia, it can not be used by itself. Applying VIA along with Pap smears helps to detect a higher number of cases with cancer precursor lesions

    Identification of polymorphism in promoter region of growth hormone receptor (GHR) gene and its association with milk related traits in Holstein cows

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    It is widely accepted that hormones, growth factors and other agents exert their biological effects on target tissues by binding to specific receptors on the plasma membrane. The variability in constituent sequences of growth hormone receptor (GHR) gene is very important because of its major role in mammary gland development. The aim of the present study is to detect polymorphism in promoter region of GHR gene and its association with milk related traits in Holstein cows. Blood samples were randomly collected from 93 Holstein cows, transported to the laboratory and stored at -20°C for further analysis. DNA was extracted using modified salting-out method and a fragment of 836 base pair from promoter region of GHR gene was amplified by a specific primer pairs using polymerase chain reaction (PCR). The PCR products were digested by AluI restriction enzyme and electrophoresed on 2% agarose gel. Result of enzyme digestion for GHR gene, showed allele AluI(-) with the fragment sizes of 14, 75 and 747, and allele AluI(+) with the fragment sizes of 14, 75, 145 and 602 base pairs. Frequency estimation of AluI(-) and AluI(+) alleles were 56 and 44%, respectively, and mean of heterozygosity was 0.49. Statistical analysis showed that cows with AluI(+) allele had significantly higher milk protein and fat percentage at first lactation compared with cows with AluI(-/-), while there was no significant relation between different genotypes and other traits.Keywords: Growth hormone receptor, polymorphism, milk, HolsteinAfrican Journal of Biotechnology Vol. 9(33), pp. 5460-5464, 16 August, 201

    Insulin-like growth factor I gene polymorphism associated with growth traits in beluga (Huso huso) fish

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    The aim of the present study was to detect polymorphism in Insulin like growth factor-I (IGF-I) gene of beluga (Huso huso) fish using PCR-SSCP technique and also investigation of its association with growth traits (condition factor, body length and weight). A total of 150 specimens of beluga were randomly selected and DNA was isolated from caudal fin using modified salting out method. Then two fragments of 171 and 362 bp from 5'-UTR and 3'-UTR regions of IGF-I gene were amplified, respectively. Genotyping of individuals by SSCP technique showed five banding patterns of A, B, C, D and E for 5'-UTR region with the frequencies of 29.2, 0.76, 16.92, 51.53 and 10% respectively in one year-old and three banding patterns of A, C and D with the frequency of 45, 10 and 45% for two year-old fish. Also three banding patterns (A, B and C) were seen for 3'-UTR region with the frequency of 62.3, 27.69 and 10.76% in one-year-old and 20, 60 and 20% in two year-old fish. The A banding pattern in 3'-UTR and D banding pattern in 5'-UTR sites were the most frequent pattern in the studied beluga population. The association analysis using SAS statistical software indicated no significant association between observed banding patterns and growth traits (body length, weight, and condition factor) in beluga. Considering the important role of IGF-I as a probable candidate gene affecting growth related traits, these marker sites should be studied more in larger sample sizes and also in other regions of the gene

    Ecological classification of southern intertidal zones of Qeshm Island, based on CMECS model

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    The “Coastal and Marine Ecological Classification Standard (CMECS)”, a new approach to ecological classification, was applied to 122 km of the southern intertidal zone of Qeshm Island located the Hormouz Strait - the Persian Gulf. Two components of this model, Surface Geology (SGC) and Biotic Cover (BCC) were used. Considering the extent and geomorphological alternations of the covered area, 12 sampling sites within 5 sub-regions were designated using by GPS. In total, 60 habitats (biotopes) with 47 codes were determined; this variety of biotopes is directly related to the diverse surface geology (substrate) of the covered area. Most of the biotopes and codes were recorded in the mid-eastern coastal zone, due to heterogeneity in substrate structure associated with numerous ecological niches in rocky shores. Crustacean species such as Eriphia smithi, Thalamita prymna, Molluscan species such as Clypeomorous bifisciatus, Cerithium caeruleum and echinoderm species such as Echinometra mathaei and Ophiactis sp. were characteristic of rocky shores, while Crustacea groups including Ocypode rotundata and Dotilla sp., and Umbonium vestiarium (Mollusca) were characteristic of sandy shores. Although the highest number of codes was recorded in Zeitun Park site (Eastern coast), it did not possess the expected specific species (such as Diadema setosum, Linckia multiflora and Ophiocoma scolopendrina), that were encountered in sites with similar surface geology. This could have been caused by tourist traffic at the Zeitun Park site

    Malignant mixed mullerian tumor of the uterus associated with tamoxifen therapy in a patient with a history of breast cancer

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    Tamoxifen is the drug of choice in the treatment of breast cancer. Recent reports show an increased incidence of endometrial carcinoma in patients taking tamoxifen. In this article, we report a case of malignant mixed mullerian tumor after tamoxifen use. Copyright © 2006 by Razi Institute for Drug Research (RIDR)

    Century-long expansion of hydrating cement counteracting concrete shrinkage due to humidity drop from selfdesiccation or external drying

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    A physically based model for auotgenous shrinkage and swelling of portland cement paste is necessary for computation of long-time hydgrothermal effects in concrete structures. The goal is to propose such a model. As known since 1887, the volume of cement hydration products is slightly smaller than the original volume of cement and water (chemical shrinkage). Nevertheless, this does not imply that the hydration reaction results in contraction of the concrete and cement paste. According to the authors’ recently proposed paradigm, the opposite is true for the entire lifetime of porous cement paste as a whole. The hydration process causes permanent volume expansion of the porous cement paste as a whole, due to the growth of C–S–H shells around anhydrous cement grains which pushes the neighbors apart, while the volume reduction of hydration products contributes to porosity. Additional expansion can happen due to the growth of ettringite and portlandite crystals. On the material scale, the expansion always dominates over the contraction, i.e., the hydration per se is, in the bulk, always and permanently expansive, while the source of all of the observed shrinkage, both autogenous and drying, is the compressive elastic or viscoelastic strain in the solid skeleton caused by a decrease of chemical potential of pore water, along with the associated decrease in pore relative humidity. As a result, the selfdesiccation, shrinkage and swelling can all be predicted from one and the same unified model, in which, furthermore, the low-density and high-density C–S–H are distinguished. A new thermodynamic formulation of unsaturated poromechanics with capillarity and adsorption is presented. The recently formulated local continuum model for calculating the evolution of hydration degree and a new formulation of nonlinear desorption isotherm are important for realistic and efficient finite element analysis of shrinkage and swelling. Comparisons with the existing relevant experimental evidence validate the proposed model
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