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Özcan-Ekşi Emel Ece,Canbolat Çağrı,Ayhan Selim,Ekşi Murat Şakir 대한척추외과학회 2020 Asian Spine Journal Vol.14 No.5
Study Design: This is a cross-sectional study of literature databases.Purpose: The purpose of this study is to analyze the predictive factors for the publication rates of spine studies.Overview of Literature: Spine research has garnered worldwide interest due to the increased number of spinal disorders in aging population.Methods: We evaluated the abstracts presented at the annual meetings of the Spine Society of Europe between 2009 and 2012. Additionally, we recorded presentation categories, study designs, research types, random assignments of the subjects, single- or multi-center- based methodologies, and significance of the results.Results: We evaluated 965 abstracts, 53.5% of which were published in peer-reviewed journals. Publication rates were significantly higher for oral presentations (62.9%) and prospective studies (61.3%) as compared to the poster presentations (46.7%) and retrospective studies (44.2%), respectively (p <0.001). Clinical studies contributed to about 86.1% of the published abstracts. However, publication rates were significantly higher for laboratory studies as compared to clinical studies (70.1% vs. 50.8%, p <0.001). Multi-center studies were closer to publication than single-center studies (67.1% vs. 52.2%, p =0.009). Our study demonstrated that multi-center studies (odds ratio, 1.81; p =0.016) and laboratory studies (odds ratio, 2.60; p <0.001) are more likely to be published.Conclusions: Multi-center collaborations dedicated to experimental studies in spine research are highly ranked and more likely to be published in peer-reviewed journals.
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Nomadic Proletarians, Populism, and the Total Subsumption under Capital
Slavoj ?i?ek(슬라보예 지젝) 경희대학교 인류사회재건연구원 2019 OUGHTOPIA Vol.34 No.1
Can the distinction between proletarians proper (exploited workers) and the nomadic (less than) proletarians be somehow blurred in a new more encompassing category of today’s proletarians? From the strict Marxian standpoint, the answer is a resounding NO: for Marx, proletarians are not only “the poor” but those who are, by way of their role in the production process, reduced to subjectivity deprived of all substantial content; as such, they are also disciplined by the production process to become bearers of their future power (the “dictatorship of the proletariat”). Those who are outside the production process – and thereby outside a place in social totality – are treated by Marx as “lumpenproletarians,” and he doesn’t see in them any emancipatory potential; he rather treats them with great suspicion, as the force which is as a rule mobilized and corrupted by reactionary forces. Things got complicated with the victory of the October Revolution when Bolsheviks exerted power in a country where not only the large majority of the population were small farmers (and Bolsheviks gained power precisely by promising them land!), but where, as the result of violent upheavals during the civil war, millions of people found themselves in the position (not of classic lumpenproletarians but) of homeless nomads who were not yet proletarians (reduced to the “nothing” of their working force) but literally less-than-proletarians (less-than-nothing). This article will discuss the way in which Beckett and Platonov deal with working class from different perspectives and how their analyses pave a way towards the possibility of radical politics.
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Raman Spectroscopy of Fluoropolymer Conformal Coatings on Electronic Boards
Mirjana Rodošek,Lidija Slemenik Perše,Mohor Mihelčič,Matjaž Koželj,Boris Orel,Başak Bengű,Onder Sunetci,Pauli Pori,Angela Šurca Vuk 대한금속·재료학회 2014 ELECTRONIC MATERIALS LETTERS Vol.10 No.5
Fluoropolymer conformal coatings were applied to electronic boards (EBs) and cured at room temperature or 80°C. The coatings were first deposited on model substrate, i.e. aluminium alloy AA 2024 and tested for their anticorrosion properties with a potentiodynamic polarisation technique. The cathodic current densities ranged from 10−9 - 10−10 A/cm2, approaching the lower current limit after the addition of TiO2 nanoparticles into the formulation. Application of fluoropolymer-based formulation was performed via spray-coating deposition. Examination of the coverage of EBs under UV light, which is commonly used in industry, revealed that some components might not be entirely covered. In the search for other possible analytical tools of coverage with protective coatings, optical microscopy and confocal Raman spectroscopy were investigated.
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S¸eref S¸ims¸ek,Tug˘ba Yüksel,I·brahim Kaplan,Cem Uysal,Hüseyin Aktas¸ 대한신경정신의학회 2016 PSYCHIATRY INVESTIGATION Vol.13 No.6
ObjectiveaaThe aim of this study was to investigate whether cortisol and oxidative stress levels and DNA damage differ between individuals who developed PTSD or not following a sexual trauma. MethodsaaThe study included 61 children aged between 5 and 17 years who sustained sexual abuse (M/F: 18/43). The patients were divided into two groups: patients with PTSD and patients without PTSD based, based on the results of a structured psychiatric interview (K-SADS-PL and CAPS-CA). Cortisol, glutathione peroxidase (GPx), superoxide dismutase (SOD), coenzyme Q, 8-Hydroxy-2-Deoxyguanosine (8-OHdG) were all evaluated by the ELISA method. ResultsaaOur evaluation revealed a diagnosis of PTSD in 51% (n=31) of victims. There was no significant difference between the groups with or without PTSD in terms of cortisol, GPx, SOD, coenzyme Q, and 8-OHdG levels. There was no correlation between CAPS scores and GPx, SOD, coenzyme Q, and 8-OHdG levels between patients with or without PTSD. In patients with PTSD, both cortisol and 8-OHdG levels decreased with increasing time after trauma, and there was no significant correlation with cortisol and 8-OHdG levels in patients without PTSD. ConclusionaaAlthough the present study did not find any difference between the groups in terms of 8-OHdG concentrations, the decreases in both cortisol and 8-OHdG levels with increasing time after trauma is considered to indicate a relationship between cortisol and DNA damage.
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Relapsed Wilms’ tumor with multiple brain metastasis
Akın Akakın,Baran Yılmaz,Murat Şakir Ekşi,Özlem Yapıcıer,Türker Kılıç 대한소아청소년과학회 2016 Clinical and Experimental Pediatrics (CEP) Vol.59 No.no.sup1
Wilms’ tumor is the most common malignant renal tumor in childhood. The brain metastasis of a Wilms’ tumor with anaplastic histopathology is rare. We present the case of an 8-year-old girl with Wilms’ tumor, who presented with multiple brain metastases 5 years after her primary diagnosis. The brain masses were diagnosed after a generalized tonic-clonic seizure attack. The big solid mass in the cerebellum was resected, and whole-brain radiotherapy was performed, after which, she succumbed to her disease. In the case of clinical suspicion, cranial surveillance should be included in the routine clinical work-up for Wilms’ tumor. Combined aggressive therapy (surgery+radiotherapy+chemotherapy) should be applied whenever possible, for both better survival and palliative aspects.
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Ulaş Yener,Mustafa Güdük,Murat Şakir Ekşi,Murat Hamit Aytar,Aydın Sav,Serdar Özgen 대한척추신경외과학회 2016 Neurospine Vol.13 No.1
A 32-year-old man presented with gradually increasing bilateral buttock pain. He had intermittent claudication. Multiple, homogenously enhanced intradural extramedullary lesions at L2-L3 and L5-S1 levels were observed on magnetic resonance imaging. The tumors were debulked and were removed in piecemeal pattern until they had completely been resected. Histopathological examination of the surgical specimens confirmed that both tumors were myxopapillary ependymomas (MPE). MPE presenting as concomitant double tumor at conus-cauda-filum level are very rare. This kind of presentation could not be directly considered as dissemination, since both tumors were in the site of classical origin of MPE. Ten cases of double spinal MPEs have been reported to date. Including the present case, analysis of the 11 patients revealed some facts. There is a male predominance, which is opposite to the ependymomas that are commonly observed in females. Median age at presentation is 15 years. Most pronounced symptom is low back pain that sometimes radiates to lower extremities. Surgical approach was aimed in all tumors, which could be succeeded in all tumors except one. Adjuvant radiation therapy was applied in 5 patients. No recurrences have been reported after surgery or surgery + radiotherapy regimens.
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Sümeyye Çoruh Kaplan,Murat Şakir Ekşi 대한척추신경외과학회 2015 Neurospine Vol.12 No.2
Objective: Cervical spine encompasses a bridge role between the head and the lower parts of the spine and therefore has unique properties. Our aim in this study was to evaluate the cervical sagittal alignment parameters in pediatric and adult nonsurgical patients and to find any differences in respect of age, sex and admission type. Methods: All patients who were admitted to emergency and neurosurgery clinics of Diyarbakir Bismil State Hospital due to cervical spine problems (trauma, radiculopathy, paraspinal pain) in 2014 were enrolled retrospectively into the study. Cervical anteriorposterior and lateral X-rays were obtained. Our exclusion criteria were cervical coronal deformity, multitrauma, Glasgow Coma Scale <15, traumatic disruption of the cervical spine, history of malignancy, spinal infection, metabolic or rheumatologic diseases. Results: There were 44 female and 55 male patients (n=99) in the study. Thirty-five (35.35%) of the patients were younger than 18 years of age. Mean cervical spinal alignment parameters were as follows: -42.81±11.23° (OC2), -17.15±11.48° (C2-C7), -29.82±7.60° (T1 slope), -3.62±3.05° (C3), -3.14±3.05 (C4), -3.80±2.74° (C5), -3.12±2.36° (C6), -3.43±2.53° (C7). Positive correlations were observed between age-C2C7 angle, C2C7 angle-T1 slope, C3 angle-C4 angle, C4 angle-OC2 angle, C4 angle-T1 slope, C4 angle-C5 angle. The one only negative correlation was between OC2 angle-C2C7 angle. Conclusion: In this regional study, it has been observed that global cervical lordosis increases as age increases. C4 vertebra is in the middle of this evaluation as it has many correlations with other cervical segments, which should be kept in mind when making surgical plans for this delicate spine region.
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Gülten Çiçek Okuyan,Melih Yıldırım 대한외과학회 2022 Annals of Surgical Treatment and Research(ASRT) Vol.103 No.2
Purpose: The objective of this study is to evaluate the effect of the coronavirus disease 2019 (COVID-19) pandemic on elective and emergent colorectal surgical practice. Methods: The population of this retrospective observational study consisted of all consecutive patients who underwent emergent or elective colorectal surgery between March 2019 and March 2021. The patients were divided into 2 groups: the prepandemic group who were treated between March 2019 and March 10, 2020, and the pandemic group who were treated between March 11, 2020 and March 2021. The rate of emergent operations was the primary outcome. The groups were compared based on the frequency of operations, distribution of tumoral features in malignant cases, and 90th-day mortality rates. Results: There were 180 and 121 patients in the prepandemic and pandemic groups, respectively. There were significantly more patients of the American Society of Anesthesiologists physical status stage IV with comorbidity in the pandemic group than in the prepandemic group (P = 0.016 and P < 0.001, respectively). The rate of emergent operations was significantly higher in the pandemic group than in the prepandemic group (49.6% . 26.7%, P < 0.001). There were significantly more patients who received non-resectional surgery in the pandemic group than in the prepandemic group (P = 0.002). Additionally, there were significantly more patients without resection among patients with a defunctioning stoma (P = 0.001). The length of hospital stay (LoS) was significantly shorter in the pandemic group than in the prepandemic group (P = 0.039). On the other hand, the mortality rate was significantly higher in the pandemic group than in the prepandemic group (15.7% vs. 6.1%, P = 0.011). Conclusion: The study findings suggested that the COVID-19 pandemic adversely affected colorectal surgical practices, resulting in more frequent emergent operations, non-resectional procedures with stoma formation, and higher mortality rates.
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