Aortocaval Fistula in a Behcet's Disease Patient

Behcet's disease (BD) is a chronic, recurrent, systemic disease that is characterized by oral and genital ulcers and oculocutaneous inflammatory lesions. Cardiovascular involvement especially large artery involvement is a serious and vital complication of BD. Pseudoaneurysms in the major arteries may be the cause of sudden death in BD. In our case a pulsatile abdominal mass was determined to be an aortic pseudoaneurysm associated with BD and an aortocaval fistula. Here we report this case and a short review of literature because this is the first reported aortocaval fistula in a BD patient in English literature

Paroxysmal Amnesia Attacks due to Hashimoto’s Encephalopathy

Hashimoto’s encephalopathy is a rare disease which is thought to be autoimmune and steroid responsive. The syndrome is characterized by cognitive impairment, encephalopathy, psychiatric symptoms, and seizures associated with increased level of anti-thyroid antibodies. The exact pathophysiology underlying cerebral involvement is still lesser known. Although symptoms suggest a nonlesional encephalopathy in most of the cases, sometimes the clinical appearance can be subtle and may not respond to immunosuppressants or immunomodulatory agents. Here we report a case who presented with drowsiness and amnestic complaints associated with paroxysmal electroencephalography (EEG) abnormalities which could be treated only with an antiepileptic drug

Processing of T6 heat-treated Al-12Si-0.6Mg alloy

BAYRAKTAR, Senol/0000-0001-8226-0188WOS: 000516671000001In this study, ternary Al-12Si-0.6Mg material was manufactured by gravity die casting method in induction melting furnace. Microstructure images of alloy were taken on optical microscope after T6 heat treatment. Hardness, yield and tensile strength and breaking elongation of as-cast and heat-treated materials were measured by universal methods. CNC lathe was used for cutting tests and dynamometer was used to measure cutting force. Cutting tests were performed by using different cutting speeds-CS (450-500-550 m/min), feed rates-FR (0.05-0.15-0.25 mm/rev) and constant depth of cut-DOC (1.5 mm). Uncoated (A), CVD-TiCN + TiN (B) and PVD-TiAlN+TiN (C) coated carbide inserts were selected as a cutting tool. in the microstructural observations, it was determined that the structure of the material made up of aluminum rich alpha, primary and eutectic silicon, delta (Al4FeSi2) and pi (Al8Mg3FeSi6) phases. the heat treatment refined the phases in the structure of the alloy. in addition, it has been determined that it improves mechanical properties (hardness, yield and tensile strength) by spheroidizing silicon particles. As a result of the cutting tests, it was detected that the cutting force (CF) reduced with T6 heat treatment at all CS and FR values. the CF, BUE (Built up edge) and BUL (Built up layer) heightened with increasing FR, while it reduced with increasing CS on all cutting tools. CF, BUE and BUL were formed at least in tools A, B and C, respectively. While continuous chip formation was detected in the as-cast part, brittle chip formation was observed in the heat-treated part due to the reduction in breaking elongation of the material.Recep Tayyip Erdogan University Scientific Research Projects Coordinatorship [FYL-2017-827]This work was supported by the Recep Tayyip Erdogan University Scientific Research Projects Coordinatorship [No. FYL-2017-827]

Investigation of biogas production by applying thermal pretreatments from mixtures of different fruit wastes and organic raw chicken waste

WOS: 000520599400032In this study, biogas production was carried out from apple pulp (EP), orange pulp (PP) and chicken manure (TG) mixtures under anaerobic working conditions. Operating temperature (outside temperature) was selected as 40 degrees C for all experiments. The dry matter content was taken as 10 % by mass for all experiments. In the first stage of anaerobic digestion experiments, optimum mixture ratios were determined. The reactor where the highest biogas production was 215 ml / g UK for EP:PP:TG values prepared in different ratios was determined as the optimum reactor. In this reactor the mixture ratio of EP:PP:TG by mass was determined as 1:1:3. Thermal pretreatments were applied to this optimum reactor at temperatures of 100 and 120 degrees C and 30, 60 and 90 min for each temperature. The highest biogas production as a result of 100 degrees C thermal pretreatment was 338 ml / g VS and 368 ml / g VS at 120 degrees C thermal pretreatment. Biogas production was controlled by measuring the removal of soluble chemical oxygen demand (SCOD). The highest SCOD removal in the untreated reactor was 58%, while the highest SCOD removal in the 100 degrees C and 120 degrees C thermal pretreated reactors was 85.1% and 92.9%, respectivel

Anaerobic digestion of cattle manure, corn silage and sugar beet pulp mixtures after thermal pretreatment and kinetic modeling study

WOS: 000504834400007In this study, biogas production was investigated from cattle manure (CM), corn silage (CS) and sugar beet pulp (SBP) mixtures under mesophilic conditions. In anaerobic digestion (AD), CM, CS and SBP were mixed in different ratios and the optimum mixture ratio was determined as 2:1:1, w/w/w respectively. In this mixture, biogas production was 180.5 mL/g TS. After the optimum mixing ratios of CM, CS and SBP were determined, thermal pretreatments were applied to this mixture ratio. Thermal pretreatments were performed at 100, 120, 150 and 180 degrees C with 10, 20, 30, 60 and 120 min for each temperature. Considering biogas production after thermal pretreatment, the best thermal pretreatment time was determined as 60 min for all pretreatment temperatures. The highest biogas yield was 362.1 mL/g TS in the reactor which is pretreated at 180 degrees C for 60 min. After thermal pretreatment at 180 degrees C for 60 min, the SCOD value in the reactor increased by 124.6% compared to the control. This reactor produced 100.6% higher biogas production compared to the control. In addition, the solubilization of cellulose, hemicellulose and lignin in this reactor was 38.2%, 32.9% and 23.2%, respectively. Cumulative biogas production (CBP) fitted to modified Gompertz and modified Bertalanffy models.Sivas Cumhuriyet University Scientific Research Projects Unit (CUBAP) [M-665]This research was supported by the Sivas Cumhuriyet University Scientific Research Projects Unit (CUBAP) under grant no M-665. The authors wish to thank this institution for their support

Predictors of Mortality in Patients with Acute Renal Failure

Mortality associated with acute renal failure (ARF) remains high despite of developments in therapy strategies and definition of different prognostic factors. Therefore, this study focused on to define new prognostic factors and especially regional characteristics of the ARF patients. One hundred fifteen ARF patients, diagnosed from November 1998 to May 2003, were included to this prospective and observational study. Clinical features, laboratory parameters, Acute Physiology and Chronic Health Evaluation (APACHE) III scores and co-morbid conditions of the patients were examined. Clinical and laboratory data, and APACHE III scores were recorded at the first nephrology consult day. Thirty of the patients (26%) died. APACHE III scores, presence and the total number of co-morbid conditions and serum albumin levels at the time of first nephrology consultation were found as independent predictors of mortality. There was a negative correlation between APACHE III scores and serum albumin levels. Not only increased APACHE III score and presence of co-morbid conditions but also low serum albumin level was found as the predictors of mortality. However, only serum albumin level is seen as modifiable prognostic factor among these parameters. Therefore, further studies are necessary to determine the causes of hypoalbuminemia in patients with ARF and the effect of it’s effective treatment on patients outcome