Decoding Dual-Functionality in N-doped Defective Carbon: Unveiling Active Sites for Bifunctional Oxygen Electrocatalysis.

Oxygen electrocatalysis plays a pivotal role in energy conversion and storage technologies. The precise identification of active sites for oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) is crucial for developing an efficient bifunctional electrocatalyst. However, this remains a challenging endeavor.

Primary intrarenal hemangioma - A series of 39 cases.

Intrarenal hemangiomas lack concise clinicopathologic information, due to the predominance of single case reports and inclusion of other vascular neoplasms and hemangiomas of perirenal, hilar, and renal vein origin. Herein, in this multi-institutional study we evaluate clinicopathologic features of 39 intrarenal hemangiomas. The median age was 62 years (range = 27-94 years; 2:1 male to female ratio), with left-sided predominance (left = 21, right = 13; one case was bilateral).

Genu valgum in children with primary hyperparathyroidism: A case series with a review of the literature.

Primary hyperparathyroidism (PHPT) is relatively uncommon in children, and skeletal deformities due to it are even rarer in this age group. Less than 20 such cases have been reported in the English literature. We describe a case series of three patients who presented with genu valgum deformity and were found to have primary hyperparathyroidism on further evaluation.