1,4-Diferrocenylbutane-1,4-dione

In the crystal structure of the title compound, [Fe2(C5H5)2(C14H12O2)], each carbonyl group is coplanar with the adjacent cyclo­penta­dienyl ring, thus maximizing the π-orbital overlap and electronic inter­actions between the groups. In the crystal structure, there are inter- and intra­molecular C—H⋯O contacts

Experimental and Numerical Analysis of Epoxy Based Adhesive Failure on Mono- and Bi-Material Single Lap Joints Under Different Displacement Rates

Development in material science impose to use different materials in production. This causes a problem for joining different materials because traditional joining techniques such as welding could not overcome this problem in industries such as automotive. Hence, adhesive bonding overcomes this problem by its superiorities to join different materials. Joint strength of epoxy-based adhesives are affected by adhesive thickness, adherent’s surface quality and curing conditions. In this study, two different materials (SAE 304 and AL7075) were bonded by epoxy adhesive (3M DP460NS) as single lap joint (SLJ) of Aluminum-Aluminum, Steel-Steel and Aluminum-Steel. Effects of adhesive thickness (0.05, 0.13, 0.25 mm) and surface roughness (281, 193, 81 nm) to strength were compared. SLJs were tested for 1, 10, 25 and 50 mm/min displacement rates. Adhesive surface structures were imaged by Scanning Electron Microscopy (SEM) to investigate adhesive fractures. Surface roughness’s were examined by using Atomic Force Microscopy (AFM) to compare its influence on failure load. Finite Element Analysis (FEA) were conducted by using Cohesive Zone Model with ANSYS 18.0 software to obtain stress distribution of adhesive. Optimum values according to the present conditions of thickness(0.13mm) and roughness(<200nm) were determined. Experimental results were demonstrated that while displacement rates rose, failure loads increased as well. FEA analysis were fit to experimental results. It has been observed that along with material type, peel stresses become an important factor for joint strength.           &nbsp

Prevalence of Hypertension among High School Students in a Middle Anatolian Province of Turkey

Hypertension may lead to irreversible damages in vital organs, such as heart, brain, and kidney, and may cause death in children if treatments are not given despite early diagnosis. This cross-sectional epidemiological study was conducted during 1 January–31 March 2004 to investigate the prevalence of hypertension among high school students. The study cohort included 1,041 students of six high schools, who were selected from among 14,789 students of 26 high schools in Sivas province of Turkey, using the cluster-sampling method. A questionnaire was used for collecting information from students on age, gender, smoking, and whether they or their families have any diseases. Blood pressure, height, and weight of the participitants were determined by the research group. Students whose repeated systolic or diastolic blood pressures were higher than the 95th percentile were considered to be hypertensive patients. Hypertension was prevalent among 4.4% (n=45) of the students. There was a significant correlation between prevalence of hypertension and body mass index. No significant correlation was found between prevalence of hypertension and other variables, such as smoking, age, gender, and family history of diabetes. The results suggest that hypertension is an important public-health problem among high school students. The results also showed that the body mass index was an important parameter in hypertension in such a study group. Researchers should consider overweight a causative risk factor for development of hypertension in early-onset groups

Different treatment modalities and outcomes in cesarean scar pregnancy: a retrospective analysis of 31 cases in a unıversity hospital

Objectives: There is no standardized treatment modality or a generally accepted guideline in cesarean scar pregnancy (CSP) treatment. The aim of this study is to retrospectively evaluate the outcomes of the different treatment modalities used in CSP treatment.  Material and methods: 31 CSP patients retrospectively evaluated between May 2011 and February at Uludag University Hospital in Bursa, Turkey included in the study. A graphical flowchart according to the treatment modalities and timeline graphics of the patients were used. Main outcome measures were recurrent CSPs and healthy pregnancies in clinical follow-up after a successful CSP treatment.  Results: 31 CSP patients were treated with six different treatment modalities in our series. Recurrent CSP was diagnosed in three patients after a successful CSP treatment. All of these recurrent CSPs were treated with D/C procedure in their first CSP. Six patients conceived again in clinical follow-up after successful treatment of CSP.  Conclusions: CSP is a serious maternal complication that risks the mother’s life, and this problem is growing because of the increased cesarean rates. Invasive procedures applied to the uterus in CSP treatment may cause recurrent CSP in the next pregnancy of the patient. When considering the treatment options of the CSP, minimally invasive treatment modalities and the subsequent gestation of the patient should be taken into account

Endoscopic Excision of Cribriform Plate Schwannoma: A Case Report

Although 25-45% of all schwannomas occur in the head and neck, nasal and paranasal sinus presentations are rare in the literature. Here we report the case of a 67-year-old woman with a nasal schwannoma. Computerized tomography (CT) showed the mass completely occluding the nasal passage with evidence of a secondary maxillary sinusitis. A preoperative biopsy suggested the presence of a benign schwannoma. She underwent a complete endoscopic sinus surgery to remove the mass arising from the cribriform plate. Six years after surgery, the patient remains asymptomatic and without endoscopic evidence of recurrence. This case demonstrates that it is possible to achieve a complete excision of a nasal schwannoma endoscopically, which is similar to results observed for other benign nasal tumors

Our experience on brachial plexus blockade in upper extremity surgery

Objective: Peripheral nerve blocks are usually used either alone or along with general anesthesia for postoperative analgesia. We also aimed to present the results and experiences.Materials and methods: This retrospective study was conducted to scan the files of patients who underwent orthopedic upper extremity surgery with peripheral nerve block between September 2009 and October 2010. After ethics committee approval was obtained, 114 patients who were ASA physical status I-III, aged 18-70, performed upper extremity surgery in the Orthopedics and Traumatology Clinic were included to study. Patients’ demographic data, clinical diagnoses, premedication status, peripheral block type, local anesthetic dose, stimuplex needle types, hemodynamic parameters at the during surgery, the first postoperative analgesic requirements, complications and patient satisfaction were recorded.Results: Demographic data were similar to each other. Brachial plexus block was commonly performed for the forearm surgery. Infraclavicular block was performed the most frequently to patients. As the classical methods in the supine position were preferred in 98.2% of patients, Stimuplex A needle (B. Braun, Melsungen AG, Germany) have been used for blockage in 80.7% of patients. Also, in 54.4% of patients, 30 ml of local anesthetic solution composed of bupivacaine + prilocaine was used for blockade. Blocks applied to patients had provided adequate anesthesia.Conclusion: Since the brachial plexus blockade guided peripheral nerve stimulator for upper extremity surgery provide adequate depth of anesthesia and analgesia, it may be a good alternative to general anesthesia because of unwanted side effect

Can thiamine pyrophosphate prevent desflurane induced hepatotoxicity in rats?

Cetin, Nihal/0000-0003-3233-8009; Arslan, Aynur/0000-0001-5968-5823; yilmaz, adnan/0000-0003-4842-1173WOS: 000374189100004PubMed: 27050787PURPOSE: To investigate the effects of thiamine pyrophosphate (TPP) against desflurane induced hepatotoxicity. METHODS: Thirty experimental animals were divided into groups as healthy (HG), desflurane control (DCG), TPP and desflurane group (TDG). 20 mg/kg TPP was injected to intraperitoneally TDG. After one hour of TPP administration, desflurane was applied for two hours. After 24 hours, liver tissues of the animals killed with decapitation were removed. the oxidant/antioxidant levels and ALT, AST and LDH activities were measured. the histopathological examinations were performed in the liver tissues for all rats. RESULTS: Notwithstanding the levels of oxidants and liver enzymes were significantly increased (p<0.0001), antioxidant levels were significantly decreased in DCG (p<0.0001). on contrary to the antioxidant parameters were increased (p<0.05) the oxidant parameters and liver enzymes were decreased in TDG (p<0.0001). Whereas multiple prominent, congestion, hemorrhage and dilatation were observed in sinusoids and lymphocyte-rich inflammation results in the centrilobular and portal areas of liver tissue in DCG, these findings were observed less frequently in TDG. CONCLUSION: Thiamine pyrophosphate prevented liver oxidative damage induced with desflurane and may be useful in prophylaxis of desflurane induced hepatotoxicity.Erzincan University Scientific Research Projects DepartmentErzincan Binali Yildirim University [SAG-B-080715-0173]Erzincan University Scientific Research Projects Department (Project no SAG-B-080715-0173

A Case of Pneumothorax after Phrenic Nerve Block with Guidance of a Nerve Stimulator

Hiccups have more than 100 etiologies. The most common etiology has gastrointestinal origins, related mainly to gastric distention and gastroesophageal reflux disease. Intractable hiccups are rare but may present as a severe symptom of various diseases. Hiccups are mostly treated with non-invasive or pharmacological therapies. If these therapies fail, invasive methods should be used. Here, we present a patient on whom we performed a blockage of the phrenic nerve with the guidance of a nerve stimulator. The patient also had pneumothorax as a complication. Three hours after intervention, a tube thoracostomy was performed. One week later, the patient was cured and discharged from the hospital. In conclusion, a stimulator provides the benefit of localizing the phrenic nerve, which leads to diaphragmatic contractions. Patients with thin necks have more risk of pneumothorax during phrenic nerve location

Prevalence of Hypertension among High School Students in a Middle Anatolian Province of Turkey

Hypertension may lead to irreversible damages in vital organs, such as heart, brain, and kidney, and may cause death in children if treatments are not given despite early diagnosis. This cross-sectional epidemiological study was conducted during 1 January-31 March 2004 to investigate the prevalence of hypertension among high school students. The study cohort included 1,041 students of six high schools, who were selected from among 14,789 students of 26 high schools in Sivas province of Turkey, using the cluster-sampling method. A questionnaire was used for collecting information from students on age, gender, smoking, and whether they or their families have any diseases. Blood pressure, height, and weight of the participitants were determined by the research group. Students whose repeated systolic or diastolic blood pressures were higher than the 95th percentile were considered to be hypertensive patients. Hypertension was prevalent among 4.4% (n=45) of the students. There was a significant correlation between prevalence of hypertension and body mass index. No significant correlation was found between prevalence of hypertension and other variables, such as smoking, age, gender, and family history of diabetes. The results suggest that hypertension is an important public-health problem among high school students. The results also showed that the body mass index was an important parameter in hypertension in such a study group. Researchers should consider overweight a causative risk factor for development of hypertension in early-onset groups

Preoperative arterial embolization of large liver hemangiomas

PURPOSEWe aimed to investigate the efficacy and safety of preoperative selective intra-arterial embolization (PSIAE) in the surgical treatment of large liver hemangiomas.METHODSData of 22 patients who underwent resection of large liver hemangiomas were retrospectively analyzed. PSIAE was performed in cases having a high risk of severe blood loss during surgery (n=11), while it was not applied in cases with a low risk of blood loss (n=11).RESULTSA total of 19 enucleations and six anatomic resections were performed. Operative time, intraoperative bleeding amount, Pringle period, and blood transfusion were comparable between the two groups (P > 0.05, for all). The perioperative serum aspartate transaminase level was not different between groups (P = 1.000). Perioperative total bilirubin levels were significantly increased in the PSIAE group (P = 0.041). Postoperative hospital stay was longer in the PSIAE group. Surgical complications were comparable between groups (P = 0.476).CONCLUSIONPatients who underwent PSIAE due to a high risk of severe blood loss during resection of large liver hemangiomas had comparable operative success as patients with a low risk of blood loss who were operated without PSIAE. Hence, PSIAE can be used for the control of intraoperative blood loss, especially in surgically difficult cases