Phase Level Assessment of Ergonomic Intervention Effectiveness in Reducing Knee Musculoskeletal Disorder Risks During Residential Roof Shingle Installation.

Background: This study aimed to assess how knee savers (KSs) and knee pads (KPs) alleviate risks of knee musculoskeletal disorders (MSDs) among roofers during various phases of shingle installation. These phases encompass (1) reaching for shingles, (2) placing shingles, (3) grabbing a nail gun, (4) moving to the first nailing position, (5) nailing shingles, (6) replacing the nail gun, and (7) returning to an upright position.

Methods: In a laboratory setting, nine male participants simulated the shingle installation task on a slope-adjustable roof platform (0°, 15°, and 30° slopes) under four intervention conditions: no intervention (NO); with KPs only (KP); with KSs only (KS); and with both KPs and KSs (BO).

Machine-learning crystal size distribution for volcanic stratigraphy correlation.

Volcanic stratigraphy reconstruction is traditionally based on qualitative facies analysis complemented by geochemical analyses. Here we present a novel technique based on machine learning identification of crystal size distribution to quantitatively fingerprint lavas, shallow intrusions and coarse lava breccias. This technique, based on a simple photograph of a rock (or core) sample, is complementary to existing methods and allows another strategy to identify and compare volcanic rocks for stratigraphic correlation.

Geriatric Nutritional Risk Index and Postoperative Outcomes Following Head and Neck Cancer Surgery.

Background: The geriatric nutritional risk index (GNRI) is a tool to assess preoperative nutritional status that can be calculated simply based on height, weight, and serum albumin. This study assesses the utility of GNRI in predicting postoperative complications in patients undergoing major head and neck cancer (HNC) surgery.

Methods: Retrospective review of the 2016-2020 National Surgical Quality Improvement Program database.

metabolite 3-oxo-C12HSL induces apoptosis through T2R14 and the mitochondrial calcium uniporter.

Head and neck squamous cell carcinomas (HNSCCs) arise in the mucosal lining of the upper aerodigestive tract. HNSCCs have high mortality rates and current treatments can be associated with severe morbidities. It is vital to discover effective, minimally invasive therapies that improve survival and quality of life.

Occupational Exposure to Artificial Ultraviolet Radiation from Welding in Australia.

Background: Artificial ultraviolet radiation (UVR) is produced during welding and can cause damage to both the eyes (ocular) and the skin (dermal). We aimed to investigate the protection used by welders to reduce their exposure to ocular and dermal UVR.

Methods: We conducted a cross-sectional online survey in Australia that asked welders about their welding tasks and the control measures they used to protect against UVR exposure.