Influence of the laser-plume interaction on the beam profile during deep-penetration welding with coherent beam shaping.

A high-power laser beam profiling system was set up to investigate the influence of the interaction between the laser beam and the process emissions during welding with a shaped beam profile. A positional instability of the beam on the workpiece in the order of magnitude of tens of µm and noticeable distortions of the beam shape were observed when no cross jet was used. Both perturbations were reduced when a cross jet was applied to remove the process emissions from the beam path and minimized when the cross jet was positioned closest to the workpiece.

Peripheral and Organ Perfusion's Role in Prognosis of Disease Severity and Mortality in Severe COVID-19 Patients: Prospective Cohort Study.

Severe COVID-19 is associated with a generalized inflammatory response leading to peripheral and organ perfusion disorders. : This study aimed to evaluate the usefulness of peripheral and organ perfusion assessments in the prediction of prognosis and mortality in patients with severe COVID-19. : In the first 48 h of hospitalization, peripheral perfusion (saturation, Finger Infrared Thermography-FIT; Capillary Refill Time-CRT), and the color Doppler renal cortex perfusion (RCP) were estimated in a group of 102 severe COVID-19 patients.

Estimated Time of Arrival: Impact of Healthcare Disparities on Access to and Outcomes of Multidisciplinary Cleft Lip and Palate Care.

Objective: To determine the impact of sociodemographic and clinical factors on patient presentation into the cleft care pathway and determine how delayed interventions may affect post-surgical outcomes.

Design: Retrospective study.

Setting: Multidisciplinary craniofacial clinics of two university hospitals.

Early Utilization of Ketorolac in Cleft Palate Repair.

Objective: To determine the effect of ketorolac on opiate requirement and hospital length of stay after palatoplasty.

Design: This was a retrospective chart review.

Setting: This study was completed at an urban tertiary medical center.

Acute Kidney Injury and Chronic Kidney Disease and Their Impacts on Prognosis among Patients with Severe COVID-19 Pneumonia: An Expert Center Case-Cohort Study.

: Acute kidney injury (AKI) is associated with substantial mortality. In this case-control study, we analyzed the impacts of AKI and chronic kidney disease (CKD) on outcomes in a group of 323 patients with severe COVID-19. The correlation of clinical and laboratory data with AKI and CKD was also analyzed.