No abstract

No abstract

CuFe2O4 nanoparticles were prepared by using spray co‐precipitation method and annealed at 600°C. Crystal structure, microstructure and cation distribution of the sample were determined by applying of Rietveld refinement method based on synchrotron X‐ray diffraction data. Morphology was characterized by field emission scanning electron microscopy. The results indicated that the sample is single phase with inverse cubic spinel structure. Particle size was identified to be about 10 nm. The gas‐sensing properties of the copper nanoparticles were studied by using H2S as the analytic gas. It was found that the sensor based on the CuFe2O4 nanoparticles has good response in a large operating temperature range and even at near‐room temperature. The gas sensing mechanism of the studied material was discussed in detailed.

Background: Considering the effectiveness of treatment for acute ischemic stroke (AIS)patients, the most expected method is immediate revascularization using intravenous thrombolysis or mechanical thrombectomy, or both methods. Objective: “Find factors related to post-treatment outcomes of acute ischemic stroke patients undergoing cerebral revascularization”. Method: Cross-sectional, prospective, descriptive analysis with convenient sample size. Results: From February 2018 to August 2021, 83 patients were hospitalized with a diagnosis of acute ischemic stroke or acute ischemic stroke and had cerebral revascularision either by thrombolysis or mechanical devices or both. 6.02% of them had cerebral thrombosis with mechanical devices and stenting of cerebral/carotid arteries. Mean age was 66.37±11.82 (range 31to 91 years). Mean NIHSS score was 12.57±6.70. The rate of complete recanalization was 91.56%. The mRS score of 0-2 points accounted for 48.19% at the time of discharge and 54.21% at 30 days after discharge. The rate of death or severe illness at discharge accounted for 14.45%. 30 days all-cause mortality after discharge accounted for 25.3%. Conclusion: The rate of complete reperfusion in patients with acute cerebral infarction at Hanoi Heart Hospital and good recovery rate is quite high. Factors that  related to the treatment efficacy of patients with acute ischemic stroke were NIHSS score, ASPECT score, occlusion site, pre-reperfusion parenchymal damage and the selection of appropriate reperfusion measures.

No abstract