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Biomass-derived carbon materials are being increasingly utilized in various fields. This paper reports a facile synthesis method for O/N co-doped hierarchical porous carbon, utilizing the inherent pore structure and high heteroatom content of sesame meal. The O/N co-doped hierarchical porous carbon (SC-120) exhibits a hierarchical pore structure and abundant surface functional groups, the specific surface area reached 1743 m2 g−1, and the O and N element contents were measured at 10.87% and 1.95% respectively. In the three-electrode system, the specific capacitance of SC-120 reached 358.6 F g−1 at a current density of 0.5 A g−1, and a specific capacitance of 262.5 F g−1 is maintained even at a high current density of 30 A g−1. Constructed using SC-120 as the electrode, the symmetrical supercapacitor exhibits a high energy density of 9.23 W h kg−1 at a power density of 100 W kg−1 and excellent cyclic stability of 93.58% capacitance retention rate after 7500 charge–discharge testing. Additionally, SC-120 demonstrates potential for electromagnetic interference shielding, attaining an efficiency of 33.18 dB and a shielding effectiveness of 99.59% within the X-band frequency range of 8.2–12.4 GHz. [ABSTRACT FROM AUTHOR]

Objective: Functional magnetic resonance imaging (fMRI) has been applied to assess the microstructure of the kidney. However, it is not clear whether fMRI could be used in the field of kidney injury in patients with Antineutrophil cytoplasmic antibody (ANCA)-associated vasculitis (AAV). Methods: This study included 20 patients with AAV. Diffusion kurtosis imaging (DKI) and blood oxygen level-dependent (BOLD) scanning of the kidneys were performed in AAV patients and healthy controls. The mean kurtosis (MK), mean diffusivity (MD), and fractional anisotropy (FA) parameters of DKI, the R2* parameter of BOLD, and clinical data were further analyzed. Results: In AAV patients, the cortex exhibited lower MD but higher R2* values compared to the healthy controls. Medullary MK values were elevated in AAV patients. Renal medullary MK values showed a positive correlation with serum creatinine levels and negative correlations with hemoglobin levels and estimated glomerular filtration rate. To assess renal injury in AAV patients, AUC values for MK, MD, FA, and R2* in the cortex were 0.66, 0.67, 0.57, and 0.55, respectively, and those in the medulla were 0.81, 0.77, 0.61, and 0.53, respectively. Conclusions: Significant differences in DKI and BOLD MRI parameters were observed between AAV patients with kidney injuries and the healthy controls. The medullary MK value in DKI may be a noninvasive marker for assessing the severity of kidney injury in AAV patients. [ABSTRACT FROM AUTHOR]

Objective: Functional magnetic resonance imaging (fMRI) has been applied to assess the microstructure of the kidney. However, it is not clear whether fMRI could be used in the field of kidney injury in patients with Antineutrophil cytoplasmic antibody (ANCA)-associated vasculitis (AAV)., Methods: This study included 20 patients with AAV. Diffusion kurtosis imaging (DKI) and blood oxygen level-dependent (BOLD) scanning of the kidneys were performed in AAV patients and healthy controls. The mean kurtosis (MK), mean diffusivity (MD), and fractional anisotropy (FA) parameters of DKI, the R2* parameter of BOLD, and clinical data were further analyzed., Results: In AAV patients, the cortex exhibited lower MD but higher R2* values compared to the healthy controls. Medullary MK values were elevated in AAV patients. Renal medullary MK values showed a positive correlation with serum creatinine levels and negative correlations with hemoglobin levels and estimated glomerular filtration rate. To assess renal injury in AAV patients, AUC values for MK, MD, FA, and R2* in the cortex were 0.66, 0.67, 0.57, and 0.55, respectively, and those in the medulla were 0.81, 0.77, 0.61, and 0.53, respectively., Conclusions: Significant differences in DKI and BOLD MRI parameters were observed between AAV patients with kidney injuries and the healthy controls. The medullary MK value in DKI may be a noninvasive marker for assessing the severity of kidney injury in AAV patients.