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Öğe Bilateral Simultaneous Percutaneous Nephrolithotomy in Children(Elsevier Science Bv, 2010) Güven, S.; Öztürk, A.; Arslan, M.; Pişkin, M.; İstanbulluoğlu, O.; Kılınç, M.Introduction & Objectives: Children with bilateral kidney stones are generally treated using staged percutaneous nephrolithotomy (PNL). Reports related with simultaneous bilateral PNL (SBPNL) in children are scarce. In this paper, we aimed to evaluate the efficacy and safety of SBPNL in children. Material & Methods: The children who underwent SBPNL applications between January 2007 and February 2010 in our clinic were evaluated. Patient data were collected from the retrospective reviews of hospital recordsÖğe Geochemistry and Petrogenesis of the Eastern Pontide Volcanic Rocks, Northeast Turkey(Elsevier GmbH, 1997) Arslan, M.; Tüysüz, N.; Korkmaz, S.; Kurt, H.The eastern Pontides are characterized by three volcanic cycles erupted in Liassic, Upper Cretaceous and Eocene times. Volcanic rocks of Liassic age are transitional, those of Upper Cretaceous age are subalkaline, and Eocene volcanic rocks are alkaline around Trabzon and Tonya, but subalkaline in the south of Gümüşhane. Geochemical variations indicate that fractional crystallization played a significant role in the evolution of more differentiated rocks, especially in Liassic and Upper Cretaceous volcanic rocks. Fractionation of olivine, clinopyroxene and plagioclase was the major control in the evolution of Liassic volcanic rocks, whereas fractionation of plagioclase and clinopyroxene dominated in the Upper Cretaceous volcanic rocks. Liassic volcanics show high to low pressure fractionation but Upper Cretaceous volcanic rocks low pressure fractionation. Eocene volcanic rocks from Tonya exhibit high to low pressure whereas those from Trabzon low pressure fractionation. The volcanic rocks were possibly derived from a tholeitic to an E-type MORB source. The Eocene volcanic rocks around Trabzon have very high LILE and LREE concentrations compared to those of Tonya. This may be due to varying degrees of partial melting from a common source. The trace element patterns of Liassic volcanic rocks are very consistent with those of withinplate tholeites, suggesting that the Liassic volcanic rocks developed under an extentional regime, possibly related to rifting. However, Upper Cretaceous volcanic rocks are best represented by island-arc calcalkaline, and Eocene volcanic rocks by within-plate alkaline patterns. Hence, it may be implied that the subduction began in the Liassic after rifting, continued in the Upper Cretaceous and reached maturity with crustal thickening in the Eocene. These geochemical data together with geological data indicate an island arc setting for the Eastern Pontide volcanic rocks.Öğe A multicenter cross-sectional study to evaluate the clinical characteristics and nutritional status of children with cerebral palsy(Elsevier Ltd, 2018) Aydın, Kürşad; Aydın, K.; Akbaş, Y.; Ünay, B.; Arslan, M.; Cansu, A.; Şahin, S.Background & aims: This study was designed to assess clinical characteristics and nutritional status of pediatric outpatients with cerebral palsy (CP) and to determine prevalence of malnutrition based on physicians’ clinical judgment and on anthropometric data in relation to percentile reference values. Methods: A total of 1108 pediatric neurology outpatients (mean ± SEM age: 7.2 ± 0.1 years, 59.3% were males) diagnosed with CP were included in this cross-sectional, non-interventional multicenter single-visit study conducted between October 2015 and July 2016 at 20 centers across Turkey. Data on patient and CP characteristics, concomitant nonneuromotor impairments and gastrointestinal disorders as well as anthropometrics, outcome of nutritional status assessment (via physicians’ clinical judgment and Gomez classification and Waterlow classification of anthropometric data) and physician's view on nutritional care in CP patients were collected at a single visit. Results: The most common CP etiology was asphyxia (62.5%). The most common clinical category was spastic CP (87.5%) with quadriplegic (54.0%) topography and level V gross motor dysfunction (45.4%) in most of patients. The prevalence of malnutrition was considered to be 57.2% based on physicians’ clinical judgment, while shown to be 94.3% (3rd degree in 86.7%) according to Gomez classification of Neyzi weight for age (WFA) percentiles and to be 91.3% (severe in 88.3%) according to Waterlow classification of Neyzi height for age (HFA) percentiles. Conclusions: In conclusion, our findings revealed high prevalence of malnutrition, while also emphasize the likelihood of overestimation of malnutrition in children with CP when anthropometric assessment was based on use of growth charts for general pediatric population. This large-scale survey provided valuable data regarding nutritional assessment practice and malnutrition prevalence among children with CP in Turkey, which may be utilized for future proactive strategies in the prevention and treatment of malnutrition in this population. © 2018 European Society for Clinical Nutrition and MetabolismÖğe Petrochemistry and Parent Rock Characteristics of the Amphibolites in the Gümüşler Formation of the Niğde Metamorphics, Central Turkey(2006) Kocak, K.; Arslan, M.; Kurt, H.; Baş, H.; Döyen, A.Bu çalışmada, tüm kayaç kimyasal analizleri kullanılarak Niğde metamorfıtlerine ait mermer ve kuvarsitlerle ilişkili Gümüşler amfibolitlerinin petrokimyasi ve köken kayaç özellikleri ortaya konulmuştur. Amfibolitler, Kretase öncesi yaşlı Gümüşler Formasyonunun metasedimentleri ile birlikte bulunmaktadır. Masif ve oldukça yapraklanmış amfibolitler plajiyoklas, hornblend, kuvars, diyopsit ile tali olarak sfen ve apatitten oluşmaktadır. Niggli eğilimleri ve iz element karakteristiklerine dayanarak amfibolitlerin metasedimentlerin arasında yer alan metamagmatik kayaçlar (tüfveya daha az ihtimalle bazaltik-andezitik sil/lav) olduğu söylenebilir. Amfibolitlerin köken kayaçlarının bileşimi subalkali bazalt ve andezit olup, yüksek K2O, Rb, Sr, Ba, K/Rb (\sim270-550) oranı, ve düşük MgO, Ti, Y, Zr, CaO/Al2O3 oranı ile karakterize olmaktadır. Petrokimyasal veriler ayrıca, bu ortoamfibolitlerin köken kayaçlarının muhtemelen olivin, klinopiroksen ve hornblend kristal ayrımlaşması ile oluştuğunu ortaya koymaktadır.Öğe Petrological and source region characteristics of ophiolitic hornblende gabbros from the Aksaray and Kayseri regions, central Anatolian crystalline complex, Turkey(PERGAMON-ELSEVIER SCIENCE LTD, 2005) Koçak, K.; Işık, F.; Arslan, M.; Zedef, VeyselMany Neo-Tethyan ophiolitic bodies are well exposed as thrust-slices in Central Anatolia and are predominantly represented by massive hornblende gabbros, most of which are cut by Supra Subduction Zone (SSZ) plagiogranites. The allochthonous gabbros are distinct from their autochthonous counterparts, with their mineralogy including both igneous hornblende, relict diopside rimmed by replacement hornblende and their chemical composition corresponding mostly to gabbro rather than diorite. The results of major and trace element analyses of forty-two samples, and REE analyses of nine samples, indicate that the homblende gabbros are SSZ-type and formed from a wet magma by high-degree partial melting of peridotite possibly coupled with contamination by predominantly neighbouring-slab derived fluids within an intra-oceanic back-arc basin. The mafic magmas then underwent high-level fractional crystallization involving titaniferous magnetite, diopside, tschermakite and possibly olivine. Emplacement was followed by extensive ocean-floor metamorphism, which has induced crystallization (or recrystallization) of chlorite, biotite, amphiboles and mobilisation of most of the major elements such as alkali and alkali earth elements, and some LREE. (c) 2004 Elsevier Ltd. All rights reserved.Öğe TOTALLY TUBELESS PERCUTANEOUS NEPHROLITHOTOMY: IS IT SAFE AND EFFECTIVE IN PRESCHOOL CHILDREN? -- 2(MARY ANN LIEBERT INC, 2010) Guven, S.; Ozturk, A.; Kilinc, M.; Topbas, E.; Piskin, M.; Arslan, M.[Abstract not Available]
