Dynamic simulation of fluidized bed combustors

Ph.D. - Doctoral Progra

Asymmetric bilateral hip dislocations and unilateral femoral head fracture: A CASE report

Hip is a stabilized joint due to the surrounding ligaments, and muscles, which can dislocate as a result of high energy trauma, high-level falls, and motor vehicle accidents. Traumatic hip dislocations can either be isolated or simultaneously with acetabular and proximal femur fractures. At the same time injury of sciatic, femoral or obturator nerves can be seen. However, avascular necrosis of femoral head, posttraumatic osteoarthritis, and heterotopic ossifications can be seen as prolonged complications. The period prior to the reduction, severity of the trauma, and performing open or close reductions are the major contributors of the prognosis. As an extremely rare entity, bilateral asymmetrical hip dislocations are reported as the 0.01–0.02% of all joint dislocations. Accompanying proximal femoral fractures are pointed out 17%, one of them is femoral head fractures which are orthopedic emergencies that need to be fixed with surgery. However, high incidence of AVN is reported at the end of 2 years even if following early reductions. In our article, traumatic bilateral asymmetric hip dislocations and femoral head fracture is described in the context of a diagnosis, treatment and follow-up. Keywords: Bilateral hip dislocations, Femoral head fracture, Motor vehicle acciden

Linyitle yakılan akışkan yataklı yakıcılarda azot oksit (NOx) emisyonlarının belirlenmesi

TÜBİTAK MİSAG02.02.1998Bu çalışmada ODTÜ Kimya Mühendisliği Bölümü'nde kumlu olan 0.3 MW ısıl güçteki akışkan yataklı yakıcı üzerinde tipik bir Türk linyitini temsil eden kül, uçucu madde ve kükürt içeriği kaliteli kömürlere göre yüksek olan Beypazarı linyitinin yakılmasıyla ortaya çıkan NOX ve diğer baca gazlarının $(CO_2, CO, O_2 ve SO_2)$ emisyonları on-line ölçümlerle belirlenmiştir. NOx'in yakıcı boyunca dağılımının ve baca gazındaki emisyonunun fazla hava ve kireçtaşı katkısı ile değişimi incelenmiştir. Bulgular, NOx'in daha ziyade linyitin uçucu madde içeriğinden kaynaklandığını ve bu nedenle NOX oluşumunun çalışılan sıcaklık aralığında (857-918°C) sıcaklıktan etkilenmediğini göstermiştir. Baca gazındaki NOX emisyonunun hava fazlasıyla arttığı, kireçtaşı katkısıyla da azaldığı tesbit edilmiştir. Ölçümlerle belirlenen baca gazı emisyonları, günümüzdeki ulusal ve uluslararası standart aralıklarıyla karşılaştırılmış ve izin verilebilir değerlerin altında kaldığı görülmüştür

Comparison of High-Dose Extracorporeal Shockwave Therapy and Intralesional Corticosteroid Injection in the Treatment of Plantar Fasciitis

WOS: 000276014700003PubMed: 20237361Background: The aim of this study was to evaluate the results of high-dose extracorporeal shockwave therapy applied with an ankle block and corticosteroid injection in patients with plantar fasciitis whose symptoms persisted for more than 6 months. Methods: Sixty patients were assessed clinically at presentation and at 3-month follow-up with a patient-assessed 100-mm visual analog scale of pain and a physician-assessed heel tenderness index. A therapeutic response rate was evaluated. A decrease of at least 50% from baseline to 3 months in visual analog scale or heel tenderness index scores was accepted as a successful result. Results: Extracorporeal shockwave therapy and corticosteroid injection provided significant improvements in visual analog scale and heel tenderness index scores, but between the two groups there was no significant difference in the visual analog scale score change 3 months after treatment (P > .05). Twenty-seven of 33 patients (82%) in the extracorporeal shockwave therapy group and 23 of 27 (85%) in the corticosteroid injection group had a successful therapeutic response after 3 months. Conclusions: Corticosteroid injection and extracorporeal shockwave therapy are successful treatment modalities for plantar fasciitis. Corticosteroid injection treatment is cost effective compared with extracorporeal shockwave therapy, and corticosteroid injection may be the first treatment choice according to these results. (J Am Podiatr Med Assoc 100(2): 105-110, 2010

Effect of sedation anesthesia on kinesiophobia and early outcomes after total knee arthroplasty

DEGIRMENCI, ERDEM/0000-0002-7988-4261WOS: 000506360000001PubMed: 31908181Background: Total knee arthroplasty (TKA) operation is an effective treatment method in severe osteoarthritis worldwide. However, the number of patients with chronic pain and functional limitations in the postoperative period will continue to increase. Kinesiphobia is an important factor that affects the functional outcomes postoperatively. The aim of this study is to investigate the effects of intraoperative consciousness of the patients during surgery on kinesiophobia development and early functional outcomes of TKA. Methods: Sixty patients with the diagnosis of primary knee osteoarthritis were enrolled in the study. Tampa Scale of Kinesiophabia (TSK) was obtained for each patient at multiple time periods. Regional anaesthesia and deep sedation were performed on group 1 (n = 30), while regional anaesthesia and light sedation were performed on group 2 (n = 30). The same surgical procedures were applied to all participants. Functional tests were performed on the patients at the postoperative 2nd and 5th days. Visual Analogue Scale (VAS) scores and knee flexion angles were also measured postoperatively. Results: The mean age of the participants (19 men (31.7%) and 41women (68.3%)) was 67.7 +/- 6.7 (54-82) years. TSK >= 40 was detected in 18 (30%) patients preoperatively and 33 patients (55%) postoperatively. The number of kinesiophobic patients showed statistically significant increase after operation (20/30 (66.7%)) according to preoperative period (9/30 (30%)) in group 2 (p = 0.003). Postoperative functional scores, knee flexion angles and VAS scores were better in non-kinesiophobic patients. Conclusion: Patient's consciousness during TKA operations is an important factor that interferes with the postoperative kinesiophobia development, which may play a pivotal role affecting the early mobility and functional outcomes

Hematolojik malignite büyük aksiller kitle ve masif assit ile taklit eden metastatik malign melanom olgusu

İzmir Tepecik Eğitim ve Araştırma HastanesiMalignant melanoma is not only a type of skin cancer but also characterized with a wide spectrum of clinical signs and symptoms. In this article we report a 32-year-old male case who was admitted to internal medicine clinic for his large axillary mass and massive ascites that was initially thought to be due to hematologic malignancy. During our clinical follow-up an ulcerated skin lesion was noticed. Both the pathological evaluations of axillary mass and skin lesion revealed metastatic malignant melanoma.Malign melanom yalnızca bir deri kanseri türü değil, aynı zamanda geniş bir klinik belirti ve bulgular yelpazesinde tanımlanmaktadır. Bu yazıda, büyük aksiller kitle ve masif assit nedeniyle dahiliye kliniğine başvuran ve başlangıçta hematolojik malignite olduğu düşünülen 32 yaşında bir erkek olgu sunuldu. Klinik takip sırasında ülserli deri lezyonu dikkati çekti. Hem aksiller kitle hem de cilt lezyonunun patolojik değerlendirmesinde metastatik malign melanom ortaya konuldu

Infusion Versus Bolus Injection of Tc-99m Tetrofosmin in the Identification of Viable Myocardium

In this report, a patient with 100% RCA stenosis and prominent collaterals, in which TI-201 rest/redistribution and Tc-99m tetrofosmin infusion imaging findings were compatible with viable myocardium in contrast to Tc-99m tetrofosmin bolus imaging is presented. Viability was confirmed with improvement of wall motion and perfusion 3 months after revascularization. Infusion of Tc-99m tetrofosmin rather than a bolus injection may be a more reliable technique in the identification of severely ischemic but viable myocardium.</p