A 3D Analysis of Dendritic Solidification and Mosaicity in Ni-Based Single Crystal Superalloys.

Ni-based single crystal superalloys contain microstructural regions that are separated by low-angle grain boundaries. This gives rise to the phenomenon of mosaicity. In the literature, this type of defect has been associated with the deformation of dendrites during Bridgman solidification.

Investigating students' E-Learning attitudes in times of crisis (COVID-19 pandemic).

With the COVID-19 pandemic affecting the world, the vast majority of students in various educational institutions around the world have changed their learning styles from the physical classroom to digital learning education. Especially the fact that university students take their lessons with e-learning in times of crisis (COVID-19 pandemic) has forced them to spend more time with the computer. This situation will also affect their academic motivation.

Brucellosis mimicking enteric fever.

Brucellosis is a systemic infection with multiple presentations. Despite its oral transmission and gastrointestinal pathogenesis, systemic symptoms are usually more prominent than gastrointestinal complaints. We report a patient with enteric fever caused by Brucella melitensis.

Efficacy of oral ribavirin treatment in Crimean-Congo haemorrhagic fever: a quasi-experimental study from Turkey.

Objective: The aim of this study was to evaluate the efficacy of oral ribavirin treatment in patients with Crimean-Congo haemorrhagic fever (CCHF).

Methods: In 2004, all patients diagnosed with CCHF were treated with oral ribavirin, however in 2003 none of the CCHF patients had been given treatment due to lack of confirmatory diagnostic information at that time in Turkey. In this study, patients treated with ribavirin in 2004 (n=126) were compared with ribavirin-untreated CCHF patients (n=92) in 2003.

Imipenem-resistant Pseudomonas aeruginosa: risk factors for nosocomial infections.

The aim of this study was to determine the risk factors for nosocomial infections of imipenem-resistant Pseudomonas aeruginosa (IRPA). A prospective case-control study was performed at a tertiary care hospital in Ankara from January to December 2004. The patients with nosocomial P.

The epidemiology of Crimean-Congo hemorrhagic fever in Turkey, 2002-2007.

Background: Crimean-Congo hemorrhagic fever (CCHF) is a serious disease caused by the CCHF virus of the Bunyaviridae family. The disease has been reported in 30 countries in Africa, Asia, Eastern Europe, and the Middle East. It has been present in Turkey since 2002.

Listerial rhombencephalitis in an immunocompetent young adult.

Listeria monocytogenes is a common cause of central nervous system infections, especially in immunosuppressed patients, infants and elderly people. Listerial rhombencephalitis is a rare and severe infection of the brainstem that is reported to have high mortality and frequent serious sequelae for survivors. We report the case of a 19-year-old healthy male who presented with listerial brainstem infection due to Listeria monocytogenes.

High serum levels of neopterin in patients with Crimean-Congo hemorrhagic fever and its relation with mortality.

Objective: Neopterin is generated and released in increased amounts by macrophages upon activation by interferon-gamma during cellular immune response. In this study, we aimed to investigate serum neopterin levels in patients with Crimean-Congo hemorrhagic fever (CCHF) and its clinical significance as a predictor factor of mortality.

Methods: Neopterin concentrations on the first day of hospitalization were measured in serum samples from 51 CCHF patients.

Clinical and laboratory features of Crimean-Congo hemorrhagic fever: predictors of fatality.

Objective: To determine the predictors of fatality among patients with Crimean-Congo hemorrhagic fever (CCHF) based on epidemiological, clinical, and laboratory findings.

Methods: Among the patients with possible CCHF who were referred to Ankara Numune Education and Research Hospital (ANERH) from the surrounding hospitals between 2003 and 2006, those with IgM antibodies and/or reverse transcriptase-polymerase chain reaction (RT-PCR) results positive for CCHF virus in their blood, and who had received only supportive treatment, were included in the study.

Results: Sixty-nine patients with CCHF were admitted to ANERH from various cities of the northeastern part of the central region and southern parts of the Black Sea region of Turkey.

Breastfeeding in Crimean-Congo haemorrhagic fever.

Crimean-Congo haemorrhagic fever (CCHF) is potentially a fatal disease transmitted by tick bite, close contact with blood or tissues of infected humans or viraemic livestock. We present the clinical course of 2 breastfeeding women with CCHF and their babies. Both the mothers had positive reverse transcriptase-polymerase chain reaction for CCHF virus in blood and it was negative in breast milk.

Viral load as a predictor of outcome in Crimean-Congo hemorrhagic fever.

Crimean-Congo hemorrhagic fever (CCHF) is a potentially fatal disease affecting multiple organ systems. To determine the association between viral load and severity of CCHF infection, quantitative measurement of CCHF virus was performed using 1-step reverse-transcriptase polymerase chain reaction for 36 patients with CCHF infection. Viral loads ranged from 1.

Fever of unknown origin: analysis of 71 consecutive cases.

Background: Fever of unknown origin (FUO) is still an important problem in clinical practice. Evaluation of patient characteristics may clarify the utility of diagnostic tests and etiologies of FUO.

Methods: Fever of unknown origin in 71 patients was investigated at Ankara Numune Education and Research Hospital in Turkey between February 2001 and December 2004.

The risk factors for infections acquired by cerebral hemorrhage and cerebral infarct patients in a neurology intensive care unit in Turkey.

Few studies have investigated the risk factors for nosocomial infections developed in neurology intensive care units (ICUs). In this study, the risk factors for ICU-acquired infections in patients with cerebral hemorrhage and cerebral infarct who were treated for more than 24 h at the Ankara Training and Research Hospital were prospectively evaluated over a study period of 14 months. Of 171 patients included in the study, 71 (41.

Risk factors for nosocomial imipenem-resistant Acinetobacter baumannii infections.

Objectives: To identify the risk factors for nosocomial imipenem-resistant Acinetobacter baumannii (IRAB) infections.

Methods: A prospective case-control study, set in an 1100-bed referral and tertiary-care hospital, of all patients who had nosocomial A. baumannii infections between January 1 and December 31, 2004.

Risk factors for ICU-acquired methicillin-resistant Staphylococcus aureus infections.

Background: Methicillin-resistant Staphylococcus aureus (MRSA) is a major nosocomial pathogen that causes severe morbidity and mortality in many hospitals worldwide, and MRSA infections are frequent in intensive care units (ICUs).

Objective: A prospective study was implemented to investigate the risk factors for ICU-acquired MRSA infections.

Methods: This study was conducted in surgical and neurologic ICUs from May to November 2003.

A complication of brucellosis: epididymoorchitis.

Background: Epididymoorchitis is the most frequent genitourinary complication of brucellosis.

Methods: This prospective study was conducted between February 2001 and January 2004, prospectively. Male patients diagnosed with brucellosis were included in this study and evaluated for testicular involvement.

Spontaneous bacterial peritonitis due to Brucella melitensis.

Peritonitis is an extremely rare complication of brucellosis. A case is reported of blood and ascitic culture-proven spontaneous bacterial peritonitis caused by Brucella melitensis, in a patient who had also cirrhosis.

Neurobrucellosis in an endemic area of brucellosis.

Central nervous system involvement occurs less than 5% of patients with brucellosis. A prospective analysis of 73 patients with brucellosis identified 13 (17.8%) neurobrucellosis cases from February 2001 to May 2002.

Evaluation of antibiotic use in a hospital with an antibiotic restriction policy.

The study was designed to evaluate rational antibiotic use in relation to diagnosis and bacteriological findings. All hospitalized patients who received antibiotics were evaluated by a cross-sectional study. Of the 713 patients hospitalized, 281 (39.

A Case of Brucellosis Presenting with Severe Thrombocytopenia.

Thrombocytopenia is one of the rare hematologic complication of brucellosis. Herein a case of brucellosis with severe thrombocytopenia was reported. The patient was admitted to hematology service with epistaxis, ecchymoses, fever, thrombocytopenia (0.

Venous sinus thrombosis after Proteus vulgaris meningitis and concomitant Clostridium abscess formation.

A 19-y-old woman presented with Proteus vulgaris meningitis as a complication of chronic otitis media. Despite treatment with ceftazidime and amikacin no clinical improvement was observed. Cranial MRI revealed right-sided mastoiditis/otitis media and venous sinus thrombosis.