Taguchi-based optimisation of FSW parameters for advancement in aerospace materials: Al-Li 2060 alloy.

Aluminium-lithium (Al-Li) 2060 alloy, a 3rd generation Al-Li alloy, is considered a structural material for aircraft components. This study employs the Friction Stir Welding (FSW) process with a kinematic 5-axis robotic arm to weld 4-mm-thick plates of 2060-T8E30 Al-Li alloy. The focus is on the impact of tool axial force and speeds on the microstructural evolution, mechanical properties, and surface integrity of the welded joints.

The Role of Pulmonary Metastasectomy for Non-Primary Lung Cancer: Umbrella Review of Meta-Analyses.

Background And Objectives: Due to heterogeneous characteristics of primary cancers, the efficacy of pulmonary metastasectomy (PM) in nonprimary lung cancers has not been investigated. This study aims to investigate the clinical outcomes of PM for non-primary lung cancer.

Methods: A systematic search for meta-analyses on PM for nonprimary lung cancers was conducted, encompassing publications up to January 3, 2024.

Altered gut microbiome in convalescent patients with coronavirus disease 2019.

Introduction: Coronavirus disease 2019 (COVID-19) alters the gut microbiome. This study aimed to assess the association between the disease severity of COVID-19 and changes in stool microbes through a seven-month follow-up of stool collection.

Methods: We conducted a multicentre, prospective longitudinal study of 58 COVID-19 patients and 116 uninfected controls.

The Emaciation Disease: The Possibility of Non-Pathogenic Occurrence in Olive Flounder ().

Emaciation disease has directly affected the production of olive flounder-a major aquaculture species in Korea-since the 2000s. Various myxosporeans have been reported as its causative agents. In this study, we investigated the recent resurgence of emaciation on Jeju Island, considering not only myxosporean infections but also potential environmental factors.

Pyrolysis of Two Perfluoroalkanesulfonates (PFSAs) and PFSA-Laden Granular Activated Carbon (GAC): Decomposition Mechanisms and the Role of GAC.

Thermal treatment of perfluoroalkyl and polyfluoroalkyl substances (PFASs) presents a promising opportunity to halt the PFAS cycle. However, how co-occurring materials such as granular activated carbon (GAC) influence thermal decomposition products of PFASs, and underlying mechanisms remain unclear. We studied the pyrolysis of two potassium salts of perfluoroalkanesulfonates (PFSAs, CFSOK), perfluorobutanesulfonate (PFBS-K), and perfluorooctanesulfonate (PFOS-K), with or without GAC.