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Radiological findings of February 2023 twin earthquakes-related spine injuries

World Journal of Radiology 2024年第9期16卷 398-406页

作者： ayşenur bolukçu Ahmet Gürkan Erdemir İlkay Sedakatİdilman Adalet Elçin Yildiz GökçenÇobanÇifçi Mehmet Ruhi Onur Erhan Akpinar Department of Radiology Hacettepe UniversityFaculty of MedicineAnkara 06100Türkiye Department of Radiology University of ChicagoChicagoIL 60637United States

BACKGROuND The February 6,2023,twin earthquakes in Türkiye caused significant structural damage and a high number of injuries,particularly affecting the spine,which underscores the importance of understanding the distribution and nature of vertebral injuries in disaster *** To investigate the distribution of radiological findings of vertebral injuries in patients referred to a major tertiary center during the February 6,2023 twin earthquakes in Tü*** With the approval of the institutional ethics committee,1216 examinations of 238 patients transferred from the region to a tertiary major hospital after the twin earthquakes of February 6,2023,were retrospectively analyzed for spine *** Spine computed tomography(CT)scans were performed in 192 of 238 patients with a suspected spinal injury,42 of whom also had an magnetic resonance imaging(MRI).In 86 of 192 patients(44.79%;M:F=33:53)a spinal fracture was detected on CT and in 33 of 42 patients(78.57%;M:F=20:13)a spinal injury was found on *** the 86 patients in whom vertebral injury was detected,fractures were detected in the Denis-B group in 33,Denis-C in 4,Denis-D in 20 and Denis-E in 11 *** the vertebral bodies:40"compression fractures",17"burst fractures",5"translational dislocation fractures",5"flexion-distraction fractures"and 58"prolonged forced fetal posture fractures"were *** addition,isolated transverse or spinous process fractures were found in eighteen *** Our study highlights the prevalence and diverse spectrum of spinal injuries following the February 6,2023 twin earthquakes in Turkey underscoring the urgent need for effective management strategies in similar disaster scenarios,and emphasizing the"prolonged forced fetal posture"damage we encountered in earthquake victims who remained under the collapse for a long time.

关键词： Accidental injuries Compression fractures Crush injuries Earthquakes Spine

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Study on Weathering Behavior of Jack Pine Heat-Treated under Different Conditions

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Journal of Energy and Power Engineering 2013年第5期7卷 818-826页

作者： Duygu Kocaefe Xianai Huang Yasar Kocaefe Yaman boluk Department of Applied Sciences University of Quebec at Chicoutimi Quebec G7H 2B1 Canada Department of Civil and Environmental Eengineering University of Alberta Edmonton T6G 2W2 Alberta Canada

It is of considerable importance to investigate the influence of weathering on the degradation processes of heat-treated wood. Kiln-dried （untreated）jack pine （Pinus banksiana） and jack pine heat-treated at three different temperatures （190 ℃, 200 ℃, and 210 ℃） were exposed to artificial weathering for different periods in order to understand the degradation processes due to weathering. Before and after exposure, their color and wettability by water were determined. Structural changes and chemical modifications at exposed surfaces were also investigated using SEM （scanning electron spectroscopy）, FTIR （Fourier transforms infrared spectroscopy）, and XPS （X-ray photoelectron spectroscopy）. The results revealed that the photo-degradation of lignin and the presence of extractives play important roles in color change and wetting behavior of heat-treated wood surfaces during weathering. The structural changes also influence the wettability. The effects of weathering for woods heat-treated under different conditions were similar, but different from those for untreated wood.

关键词： Heat-treated wood weathering jack pine color change wetting SEM FTIR XPS.

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Effectiveness of Bark Extracts and CeO2 Nano Particles as Coating Additives for the Protection of Heat-Treated Jack Pine

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Journal of Energy and Power Engineering 2013年第6期7卷 1198-1205页

作者： Duygu Kocaefe Sudeshna Saha Yasar Kocaefe Cornelia Krause Andre Pichette Yaman boluk Department of Applied Sciences University of Quebec at ChicoutimL Quebec G7H 2B1 Canada Department of Civil and Environmental Engineering University of Alberta Alberta T6G 2W2 Canada

High temperature heat-treatment of wood, which is value-added green product, is one of the altematives to chemical treatment. It has better dimensional stability, thermal insulating properties and biological resistance compared to kiln dried wood. It also has dark brown color which is very important for decorative purposes. unfortunately, this color changes during weathering. Developing a transparent and non-toxic coating for the protection of heat-treated wood against discoloration without changing its natural appearance is the main objective of this study. For this purpose, waterborne acrylic polyurethane base was chosen because of its durability against weathering and non-toxic nature. Natural antioxidants which are extracted from barks and CeO2 nano particles （alone or together with lignin stabilizer） were used as additives to develop different coatings. The protective characteristics of these coatings were compared with highly pigmented and toxic industrial coating under accelerated weathering conditions. The results showed that acrylic polyurethane coatings protected wood better compared to commercially available coating tested in this study. The chemical modifications during accelerated weathering of coated and heat-treated wood surfaces were monitored by X-ray photoelectron spectroscopy analysis. The morphological changes took place during weathering were studied by fluorescence microscope analysis.

关键词： Heat-treated wood ultra violet protection coating development bark extract CeO2 nano particles XPS fluorescencemicroscopy.

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带相反电荷的纤维素纳米晶须和聚电解质组成的复合体系的凝胶行为研究

带相反电荷的纤维素纳米晶须和聚电解质组成的复合体系的凝胶行为...

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2013年全国高分子学术论文报告会

作者：吕昂张俐娜 Yaman boluk 武汉大学化学与分子科学学院 university of Alberta

＜正＞由带有相反电荷的胶体和聚电解质组成的复合体系（溶液、凝胶）具有复杂的粘弹和流变行为,具有广泛的应用前景。本文系统的研究了带负电的纤维素纳米晶须及带正电的聚电解质（羟乙基纤维素季铵盐）组成的复合体系的溶液-凝胶转变。

关键词：纤维素纳米晶须聚电解质相反电荷凝胶化

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