Wilkersonwade8322

Even a 5 nm layer of Pt doped LSF (1.5 at% Pt), i.e. a Pt loading of 80 ng cm-2, improved the polarization resistance by a factor of about 2.5. In addition, p(O2) and temperature dependent impedance measurements on both pure and Pt doped LSF were performed in situ and obtained similar activation energies and p(O2) dependence of the polarization resistance, which allow us to make far reaching mechanistic conclusions indicating that Pt4+ introduces additional active sites.A perylene-based acceptor (PMI-FF-PMI), consisting of two perylene monoimide (PMI) units bridged with a dihydroindeno[1,2-b]fluorene molecule was developed as a potential non-fullerene acceptor (NFA) for organic solar cells (OSCs). The synthesized NFA was combined with the high-performance donor polymer D18 to fabricate efficient OSCs. With an effective bandgap of 2.02 eV, the D18PMI-FF-PMI blend can be categorized as a wide-bandgap OSC and is an attractive candidate for application as a wide-bandgap sub-cell in all-organic triple-junction solar cell devices. Owing to their large effective bandgap, D18PMI-FF-PMI solar cells are characterized by an extremely high open-circuit voltage (V OC) of 1.41 V, which to the best of our knowledge is the highest reported value for solution-processed OSCs so far. Despite the exceptionally high V OC of this blend, a comparatively large non-radiative voltage loss (ΔV non-rad OC) of 0.25 V was derived from a detailed voltage loss analysis. Measurements of the electroluminescence quantum yield (ELQY) of the solar cell reveal high ELQY values of ∼0.1%, which contradicts the ELQY values derived from the non-radiative voltage loss (ΔV non-rad OC = 0.25 V, ELQY = 0.0063%). This work should help to raise awareness that (especially for BHJ blends with small ΔHOMO or ΔLUMO offsets) the measured ELQY cannot be straightforwardly used to calculate the ΔV non-rad OC. To avoid any misinterpretation of the non-radiative voltage losses, the presented ELQY discrepancies for the D18PMI-FF-PMI system should encourage OPV researchers to primarily rely on the ΔV non-rad OC values derived from the presented voltage loss analysis based on EQEPV and J-V measurements.The oxygen exchange reaction mechanism on truly pristine surfaces of SOFC cathode materials (La0.6Sr0.4CoO3-δ = LSC, La0.6Sr0.4FeO3-δ = LSF, (La0.6Sr0.4)0.98Pt0.02FeO3-δ = PtLSF, SrTi0.3Fe0.7O3-δ = STF, Pr0.1Ce0.9O2-δ = PCO and La0.6Sr0.4MnO3-δ = LSM) was investigated employing in situ impedance spectroscopy during pulsed laser deposition (i-PLD) over a wide temperature and p(O2) range. Besides demonstrating the often astonishing catalytic capabilities of the materials, it is possible to discuss the oxygen exchange reaction mechanism based on experiments on clean surfaces unaltered by external degradation processes. All investigated materials with at least moderate ionic conductivity (i.e. all except LSM) exhibit polarization resistances with very similar p(O2)- and T-dependences, mostly differing only in absolute value. In combination with non-equilibrium measurements under polarization and defect chemical model calculations, these results elucidate several aspects of the oxygen exchange reaction mechanism and refine the understanding of the role oxygen vacancies and electronic charge carriers play in the oxygen exchange reaction. It was found that a major part of the effective activation energy of the surface exchange reaction, which is observed during equilibrium measurements, originates from thermally activated charge carrier concentrations. Electrode polarization was therefore used to control defect concentrations and to extract concentration amended activation energies, which prove to be drastically different for oxygen incorporation and evolution (0.26 vs. 2.05 eV for LSF).Religious schools are institutions for teaching Islamic sciences. Nowadays, many religious schools in Tehran, which were built during the Qajar period, have been destroyed due to natural erosion and urban expansion. Since there is no comprehensive research on the conservation and revitalization of these schools, the present study aims to model the value revitalization of Qajar religious schools in Tehran. The present research is a mixed-methods study (a qualitative-quantitative study using a simulation). The data required are collected using a questionnaire. The statistical population includes school teachers who complete the structured questionnaire after visiting the schools through a virtual tour. The teachers are selected using a random sampling technique and the sample size (number of participated teachers) is 948. The sampling adequacy is confirmed with the KMO test. The reliability and validity of the questionnaire are also verified by Cronbach's alpha and the model fit index, respectively. The data arable while all variables influence them.HIV-infected people have started to live longer since the introduction of antiretroviral therapy, however various co-morbid illnesses have emerged. Three HIV-infected individuals, all at least 43 years old, reported with a new onset of type 2 diabetes after switching to dolutegravir-combined antiretroviral therapy regimen. These three people were switched to integrase strand transfer inhibitor (dolutegravir)-based first-line antiretroviral treatment after receiving non-nucleoside reverse transcriptase inhibitor-combined first-line antiretroviral treatment for at least 6 years, as recommended by the World Health Organization for Sub-Saharan African countries, including Ethiopia.All of the given cases had normal plasma fasting sugar (fasting blood sugar  200 mg/dL and urine glucose level ⩾2+) with no ketonuria after switching to dolutegravir for 4-10 months. A glycemic control was achieved, and metformin medication was continued. After 6 months of dolutegravir treatment, the third female case developed diabetic ketoacidosis and severe hyperglycemia (fasting blood glucose level 600 mg/dL, urine glucose level 3+, and ketonuria 3+). To recover from diabetic ketoacidosis, the patient was given intravenous normal saline and regular insulin. Her glycemic control was then restored, and she was switched to NPH insulin. For all of the cases presented, the dolutegravir-based regimen was maintained. Antiretroviral regimens using dolutegravir have the potential to cause hyperglycemia and other side effects. As a result, blood glucose monitoring is required throughout treatment initiation and regularly throughout treatment follow-up, particularly for those on dolutegravir-combined antiretroviral therapy regimens.Afferent loop (A-loop) obstruction presenting as acute pancreatitis is a rare clinical entity. We report a case of A-loop obstruction that occurred 15 years after Billroth II gastrectomy, leading to acute pancreatitis and accompanied by duodenal perforation and peritonitis. A 63-year-old man complaining of upper abdominal pain, distention, and nausea was referred to our hospital. The patient was previously treated with antibiotics and gastrointestinal decompression at the primary healthcare institute after being diagnosed with acute pancreatitis. However, the symptoms did not improve. Upon inter-hospital transportation, he experienced a period of relief from the pain but soon developed signs of diffuse peritonitis. Laboratory examination showed elevated serum amylase and lipase. A computed tomography scan revealed slight edema of the pancreas, a dilated and fluid-filled bowel loop across the mid-abdomen, and fluid accumulation in the abdominal cavity and pelvis. An emergency laparotomy was conducted, followed by symptomatic treatments. The patient had an uneventful recovery and was discharged in 4 weeks.Mucormycosis is an acute and aggressive fungal infection usually, but not exclusively, occurring in immunocompromised individuals. Lack of knowledge and awareness in developing countries hinders timely management. Fedratinib This case highlights the importance of a prompt index of suspicion for the timely and aggressive intervention of mucormycosis to the Tanzanian community. We report a case of fatal rhino-orbital-cerebral mucormycosis in a diabetic patient presenting at a tertiary hospital in the Kilimanjaro region, Tanzania. Nasal deformity, proptosis, chemosis and left-sided hemiplegia were evident on physical examination. Nasoendoscopy revealed extensive necrosis of the nasal septum, inferior turbinate and involvement of the frontal recess. Computed tomography and magnetic resonance imaging of the paranasal sinuses and head revealed necrosis and ischemic changes due to fungal invasion. The patient deceased due to intracranial complications of advanced fungal invasion. Late presentation and unacquainted with mucormycosis our patient had an unfavourable outcome. Early diagnosis, extensive surgical debridement and a multidisciplinary approach to treatment are of the essence in favour of a better prognosis.

This study was aimed to assess the food hygiene practice and associated factors among food handlers working in food establishments during the COVID-19 pandemic in East Gojjam and West Gojjam Zones, North West Ethiopia.

A facility-based cross-sectional study was conducted among 845 food handlers working in 423 selected food establishments of East and West Gojjam Zones from 22 September to 2 November 2020. The food handlers were categorized as a cooker and a waiter based on their responsibility. A data collection tool was adapted from the literature and validated by conducting a pre-test prior to the study. Binary logistic regression was done to identify the factors associated with food hygiene practice among food handlers.

The prevalence of poor food hygiene practices among food handlers working in food establishments was 51.2% (95% confidence interval = 47.8, 54.6%). Being both a cooker and waiter (adjusted odds ratio = 2.98; 95% confidence interval = 1.02, 8.66), availability of personal protective equg personal protective equipment, pipe water in the kitchen, and ensuring the presence of a supervisor as well as a separate dressing room in the food establishment is recommended.

Venous thromboembolism is a major cause of mortality and morbidity among hospitalized patients and thromboprophylaxis is one of the key strategies to reduce such events. We aimed to assess venous thromboembolism risk using Padua prediction score, thromboprophylaxis practice, and outcomes in hospitalized medical patients at Tibebe Ghion Specialized Hospital, Bahir Dar, Ethiopia.

A cross-sectional study was conducted among 219 patients admitted to Tibebe Ghion Specialized Hospital from 1 December 2018 to 31 May 2019. Data were collected from patients' medical records using a pre-tested data abstraction format to collect patients' clinical information and venous thromboembolism risk using the Padua prediction score. We used Statistical Package for the Social Sciences version 26 for data analysis. Descriptive statistics was used to summarize the findings, and binary logistic regression analysis was used to assess association between the variables of interest.

Reduced mobility, recent trauma and/or surgery, nic kidney diseases (adjusted odds ratio = 61.790; 95% confidence interval 2.627-1453.602), and hypertension (adjusted odds ratio = 7.270; 95% confidence interval 1.105-47.835) were significantly associated with the risk of developing venous thromboembolism.

Nearly half of the patients were at risk of developing venous thromboembolism. Underutilization of thromboprophylaxis and inappropriate use of prophylaxis were commonly seen in Tibebe Ghion Specialized Hospital.

Nearly half of the patients were at risk of developing venous thromboembolism. Underutilization of thromboprophylaxis and inappropriate use of prophylaxis were commonly seen in Tibebe Ghion Specialized Hospital.