Diluted Acetic Acid Softened Intermuscular Bones from Silver Carp (Hypophthalmichthys molitrix) by Dissolving Hydroxyapatite and Collagen

Intermuscular bones (IBs) pose physical hazards that threaten consumer health and food safety. This study aimed to investigate the mechanism of softening IBs from silver carp with diluted acetic acid. IBs (separated from muscle) and fillets (without removing IBs) were treated with diluted acetic acid. Analyses of sensory attributes and the hardness of treated IBs indicated that diluted acetic acid (<10 mmol/L) could soften IBs effectively. Additionally, 0.5 mmol/L acetic acid softened IBs within fillets without significantly affecting the texture and flavor of fillets. Analyses of microstructure, minerals (calcium and phosphorus) and collagen content, and the Fourier transform infrared (FTIR) spectra of IBs indicated that acetic acid broke connections (formed by collagen that shared hydroxyl groups) between collagen molecules, and between collagen and hydroxyapatite (HAP), thus inducing the dissolution of collagen and HAP. The dissolution of HAP contributed more to IBs softening than collagen.

Associations of Occupational Heat Stress and Noise Exposure with Carotid Atherosclerosis among Chinese Steelworkers: A Cross-Sectional Survey

Occupational exposure to heat stress and noise at the workplace are widespread physical hazards and have been associated with an increase in both morbidity and mortality. This study aims to examine the association between occupational heat stress and noise exposure and carotid atherosclerosis in Chinese steelworkers. A total of 3471 subjects were included in this study. Carotid plaque was measured using ultrasonography. The occupational information was collected by face-to-face personal interviews and all of the reported information was verified with the company’s records. Workers were divided into non-exposure and exposure groups according to the company’s records regarding previous and/or current heat stress and noise exposure status in the workplace. The prevalence of carotid plaque was 30.1% in the study population and workers exposed to both occupational heat stress and noise had the highest prevalence of carotid plaque at 37.2%. The odds of carotid plaque in individuals of different exposure status were significantly elevated after adjustment for potential confounders, especially in the heat stress and noise exposure combination group: OR = 1.32, 95% CI: 1.06 to 1.65, in individuals who had experienced heat stress exposure; OR = 1.49, 95% CI: 1.18 to 1.88, in individuals who had experienced noise exposure; OR = 2.02, 95% CI: 1.60 to 2.56, in the combination group. No significant association in female workers and no significant multiplicative or additive interactions were found between occupational heat stress and noise exposure and carotid plaque. Exposure to occupational heat stress and noise are statistically associated with carotid atherosclerosis among male steelworkers.

Understanding Resident, Family, and Staff Safety Priorities to Guide Development of an Engagement Toolkit

Resident and family engagement (the desire, ability, and activation as a partner in care) is a necessary component of keeping assisted living (AL) residents safe. Barriers to engagement include differing priorities between the resident/family and staff. This presentation outlines the results of a content analysis of qualitative interviews with 105 AL staff, residents, and family members, in which we examined AL stakeholder priorities for safety. Qualitative interviews were analyzed to first identify safety priorities by stakeholder type (staff, resident, and families), and then compared across stakeholder group. Stakeholder-specific safety priorities were identified, including infection management (COVID-19 and others), medications errors, falls, elopement, lack of AL resources/staffing, conflict, adverse events, nutrition, physical hazards, building security, chemical agents, fire/natural disasters, and abuse/neglect – the importance of these priorities vary by stakeholder type. Presentation discussion will include implications for future intervention to address the top safety problems in AL.

Advanced Functional Materials for Intelligent Thermoregulation in Personal Protective Equipment

The exposure to extreme temperatures in workplaces involves physical hazards for workers. A poorly acclimated worker may have lower performance and vigilance and therefore may be more exposed to accidents and injuries. Due to the incompatibility of the existing standards implemented in some workplaces and the lack of thermoregulation in many types of protective equipment that are commonly fabricated using various types of polymeric materials, thermal stress remains one of the most frequent physical hazards in many work sectors. However, many of these problems can be overcome with the use of smart textile technologies that enable intelligent thermoregulation in personal protective equipment. Being based on conductive and functional polymeric materials, smart textiles can detect many external stimuli and react to them. Interconnected sensors and actuators that interact and react to existing risks can provide the wearer with increased safety, protection, and comfort. Thus, the skills of smart protective equipment can contribute to the reduction of errors and the number and severity of accidents in the workplace and thus promote improved performance, efficiency, and productivity. This review provides an overview and opinions of authors on the current state of knowledge on these types of technologies by reviewing and discussing the state of the art of commercially available systems and the advances made in previous research works.

Most common ergonomic injuries among healthcare workers

In the different healthcare settings, evidence shows that healthcare workers can be exposed to various work-related hazards, which might be ergonomics, biological, psychological, and physical hazards. Work-related musculoskeletal disorders are frequently reported among the different healthcare workers, and estimates indicate that surgeons are the most commonly affected. Disorders and injuries related to the backbone, shoulders, wrist, and knees are mainly reported by healthcare workers as relevant ergonomic hazards. In the present literature review, we have discussed the commonest ergonomics that have been reported in the literature among healthcare workers. Musculoskeletal disorders as back, knee, and wrist pain are the most frequently reported among the different settings. We have also assessed the different reasons that might attribute to the development of such events, and increased workload and working hours, in addition to the harmful postures are the main reasons that have been reported in the literature. Each clinical and surgical setting might be associated with significant risk factors over others, and therefore, specific interventions should be applied within these settings to enhance satisfaction among healthcare workers. Healthcare authorities are mainly responsible to achieve this. However, further epidemiological investigations are still needed to adequately plan the righteous interventional programs.

Implementation of HACCP Management System: Case Study of a Baking Industry (cake) in Dhaka, Bangladesh

The study aims to provide technical information on the development and application of hazard analysis and critical control points (HACCP) in one of Dhaka's popular baking (cake) industries. A generic HACCP plan in accordance with legal requirements was created after a detailed analysis of data collected from the company. Every step of the production was examined for biological, chemical, and physical hazards. The prerequisite program was designed to address some hazards prior to production, thereby simplifying the HACCP plan. The critical control points were determined by answering the questions in the decision trees. Finally, the HACCP control chart was created to include critical limits, monitoring, and corrective action as components of several HACCP principles. One critical control point (CCP) and two operational pre-requisite programs (oPRPs) were identified throughout the manufacturing process.