Mechanical Property Characterization of Virgin and Recycled PLA Blends in Single-Screw Filament Extrusion for 3D Printing.

Additive manufacturing is an attractive technology due to its versatility in producing parts with diverse properties from a single material. However, the process often generates plastic waste, particularly from failed prints, making sustainability a growing concern. Recycling this waste material presents a potential solution for reducing environmental impact while creating new, functional parts.

National cross-sectional survey of US adults to assess the reliability of current and lifetime cannabis smoking.

Objective: The objective is to examine the test-retest reliability and internal reliability of six self-report questions assessing both current (past 30 days) and lifetime cannabis smoking in an internet survey in the adult US population.

Design: Cross-sectional national survey.

Participants: Out of 957 US adults who completed a national 2020 survey administered through Ipsos KnowledgePanel, 557 completed a second survey ('reliability survey') aimed at assessing the test-retest and internal reliability of questions asking about current and lifetime cannabis smoking.

Monitoring small-scale bioreactor studies for media development using polarized total synchronous fluorescence spectroscopy (pTSFS) and synchronous light scattering (SyLS).

Biopharmaceutical process development often involves the use of small-scale bioreactors (SSBR) for optimizing media formulations and process conditions during scale up to commercial scale production. Two key process parameters (CPP) used in SSBR studies are protein titre and viable cell density (VCD). Here, we explore the efficacy of parallel polarized total synchronous fluorescence spectroscopy (TSFS) and Synchronous Light Scattering (SyLS) to qualitatively monitor these CPPs and quantitatively predict titre and VCD for a large-scale cell culture media optimization SSBR study.

Stellate Ganglion Blocks for Post-Traumatic Stress Disorder: A Review of Mechanisms, Efficacy, and Complications.

Post-traumatic stress disorder (PTSD) stands as a pervasive psychiatric condition, exerting a profound impact on millions across the globe. Despite the availability of traditional therapeutic modalities, many individuals continue to grapple with suboptimal treatment outcomes, underscoring the urgent need for novel interventions. In recent years, stellate ganglion blocks (SGBs) have garnered attention as a promising avenue in the treatment landscape for PTSD, showcasing remarkable efficacy in ameliorating symptomatology and enhancing overall quality of life.