Investigation of Indoor Stability Testing of Polymer Solar Cell

We have fabricated organic solar cell of a new low bandgap polymer poly[4,4-bis(2-ethylhexyl)-4H-cyclopenta[2,1-b:3,4-b′]dithiophene-2,6-diyl-alt-4,7-bis(2-thienyl)-2,1,3-benzothiadiazole-5′,5′′-diyl] (PCPDTTBTT). We have investigated for the first time the stability tests, ISOS-L-1 and ISOS-D-3, of PCPDTTBTT solar cells. Thermal annealing of PCPDTTBTT solar cells at 80°C brought about an improvement of photocurrent generation, stability, and efficiency of the solar cells. T80 value of PCPDTTBTT solar cell is about 150 hours which is close to P3HT (235 h). PCPDTTBTT is very promising polymer for both polymer solar cell efficiency and stability

Season, Age and Sex-Related Differences in Incidental Magnetic Resonance Imaging Findings of Paranasal Sinuses in Adults

Objective: The purpose of the current study was to investigate the prevalence of incidental paranasal sinus abnormalities on brain magnetic resonance imaging (MRI). We also aimed to assess the season, the age and sex-related differences in the frequencies of these abnormalities.Methods: Paranasal sinus cavities of 839 patients who underwent brain MRI for suspected intracranial pathology were retrospectively evaluated for the presence of incidental abnormalities. Two study groups were established according to the season in which the MRI examinations were performed, and the prevalences of the incidental sinusal abnormalities in both winter and summer were calculated. The relation of the incidental sinusal abnormalities to age and sex were also analyzed.Results: Of the 839 patients, 45.5% showed one or more sinusal abnormalities. The prevalence of the sinusal abnormalities was significantly higher in winter (50.6%) than in summer (40.3%) (p=0.003). While sphenoidal sinus lesions did not show significant seasonality (p>0.05), frontal, maxillary and ethmoidal sinus lesions were significantly more common in winter than in summer (p0.05).Conclusion: Paranasal sinus abnormality is a frequent incidental brain MRI finding which is more commonly detected in winter. Awareness of incidental paranasal sinus abnormalities and knowledge of its frequency contribute positively to clinical applications

Tenosynovial Giant Cell Tumor of the Ankle: A Case Report with an Unusual Location

Tenosynovial giant cell tumor (TSDHT) is a slow-growing benign tumor arising from the tendon sheath or bursa. TSDHT of the foot and foot ankle has been reported much less frequently compared to the hand and knee. Morphologically it is classified as the localized form, often seen in the hand, and the diffuse form seen in large joints. Therefore, TSGCT should be considered in the differential diagnosis of the foot and ankle soft tissue tumors. Clinical and radiological findings of the intra-articular localized form of TSGCT in the ankle were presented in this study

Primary gluteal subcutaneous hydatid cyst

Hydatid disease is a parasitic zoonosis caused by Echinococcus granulosus larvae. While it can affect almost any part of the human body, liver and lung are the two organs where the disease is most frequently detected. Subcutaneous hydatid cyst, which mostly develops secondary to iatrogenic spillage of cyst contents into incision area during a visceral hydatid cyst surgery, accounts for only 1.5 % of all cases of hydatid cyst. With only a limited number of reported cases, primary involvement of subcutaneous tissue by hydatid cyst is a much more rare occurrence as compared with the secondary form. Subcutaneous hydatid cysts tend to involve trunk and limb roots, and mostly present as a slowly-growing, painless, mobile mass with a normal overlying skin. To our knowledge, only a few cases of primary subcutaneous hydatid cyst in the gluteal region have been reported to date. Here, we present a 72-year-old farmer who presented with a painless lump in the gluteal region and diagnosed as having primary subcutaneous hydatid cyst. Keywords: Hydatid cyst, Gluteal region, Soft tissue, Subcutaneous, MR

Hypertrophic olivary degeneration: A case report

Hypertrophic olivary degeneration is a rare occurrence in which different pathological processes including enlargement and vacuolation of the neurons, demyelination of the white matter, and fibrillary gliosis of the inferior olivary nucleus take place. It mostly develops secondary to a destructive lesion involving the Guillain–Mollaret pathway. The mostly reported destructive lesions causing hypertrophic olivary degeneration are stroke, trauma, tumors, neurosurgical interventions, and gamma knife treatment of brainstem cavernoma. It presents with symptomatic palatal tremor, and typically appears as an expansive nonenhancing nodular lesion that shows increased signal intensity on magnetic resonance imaging (MRI). The identification of hypertrophic olivary degeneration on MRI is of great importance as its MRI appearance is very similar to those of more severe pathologies, including tumors, infarction, demyelinating lesions, and infections. We present a case of hypertrophic olivary degeneration in a patient with a history of ischemic stroke two years before the development of palatal tremor

Clinical and Magnetic Resonance Imaging Findings of Patients with Acute Carbon Monoxide Poisoning

Objective: We aim to evaluate the demographic and clinical characteristics of patients withacute carbon monoxide (CO) poisoning, who had a Glasgow Coma Score (GCS) below 15,and who had cerebral lesions detected in magnetic resonance imaging (MRI).Methods: The age, gender, causes of CO intoxication, clinical signs, neurological findings,GCS, blood carboxyhemoglobin level (COHb), serum pH, lactate, creatine kinase (CK),creatinine kinase-myocardial band MB (CK-MB), troponin-I level, brain MRI (T1-weighted, T2-weighted, FLAIR and diffusion-weighted imaging), treatment, and mortalitystatus of 327 patients were evaluated retrospectively.Results: The median age of patients was 31.5 years (IQR=19.5 years), 72.2% of the patientswere women. Neurological findings were detected in 34 (10.4%) of the patients. Thefrequency of dyspnea was significantly higher in patients with neurological findings(p0.05). Patients with neurological findings were found to have asignificantly longer follow-up period, more frequently received hyperbaric oxygen therapy(p0,05). Nörolojik bulgusu olan hastaların, takip süresi anlamlı olarak uzun olduğu, daha sıklıkla hiperbarik oksijen tedavisi aldığı saptandı (p<0,05). Çalışmamızda olguların yatış oranı % 10,7, mortalite oranı % 0,9 olarak saptandı. Nörolojik bulgusu olan hastalarda yatış ve mortalite oranları anlamlı olarak yüksek saptandı (p<0,05). MRG çekilen 32 olgunun (resistasyona yanıt vermeyen 2 hasta haricinde) 13’ünde (%40,6) patolojik bulgulara rastlandı. Sonuç: Akut karbonmonoksit zehirlenmelerinin akut beyin hasarına yol açabileceği, klinik bulgu veren bu hastalarda akut dönemde çekilen MRG’sinde %40,6 oranında bulgu vereceği saptandı.WOS:00061311550000