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This study aims to broaden our understanding of the precursors and mechanisms of suicide risk in prisoners by examining correlations and testing chain mediating models including sense of security, intolerance of uncertainty (IU), motor impulsiveness and suicide behavior. A total of 466 incarcerated male offenders voluntarily participated in the survey, which was conducted in an exclusively male prison. In total, 417 valid questionnaires were obtained, resulting in a response rate of 89.5%. The participants had an average age of 36.83 years (SD = 10.23 years). To measure the variables, the Suicidal Behaviors Questionnaire-Revised (SBQ-R), Security Questionnaire (SQ), IU Scale-12 (IUS-12), and motor impulsiveness subscale of the Barratt Impulsiveness Scale-11th Revision (BIS-11) were utilized. The results showed a serially mediating effect from sense of security to suicide risk, through the IU and motor impulsiveness. Moreover, we found different effects between the dimensions of sense of security on the suicide risk among prisoners. The present study is the first to identify the effects of IU and sense of security on suicide risk among prisoners. Our findings suggest that suicide prevention measures and interventions for prisoners should include modules aimed at treating IU and enhancing the sense of security. [ABSTRACT FROM AUTHOR]

Current clinically used electronic implants, including cardiac pacing leads for epicardial monitoring and stimulation of the heart, rely on surgical suturing or direct insertion of electrodes to the heart tissue. These approaches can cause tissue trauma during the implantation and retrieval of the pacing leads, with the potential for bleeding, tissue damage, and device failure. Here, we report a bioadhesive pacing lead that can directly interface with cardiac tissue through physical and covalent interactions to support minimally invasive adhesive implantation and gentle on-demand removal of the device with a detachment solution. We developed 3D-printable bioadhesive materials for customized fabrication of the device by graft-polymerizing polyacrylic acid on hydrophilic polyurethane and mixing with poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) to obtain electrical conductivity. The bioadhesive construct exhibited mechanical properties similar to cardiac tissue and strong tissue adhesion, supporting stable electrical interfacing. Infusion of a detachment solution to cleave physical and covalent cross-links between the adhesive interface and the tissue allowed retrieval of the bioadhesive pacing leads in rat and porcine models without apparent tissue damage. Continuous and reliable cardiac monitoring and pacing of rodent and porcine hearts were demonstrated for 2 weeks with consistent capture threshold and sensing amplitude, in contrast to a commercially available alternative. Pacing and continuous telemetric monitoring were achieved in a porcine model. These findings may offer a promising platform for adhesive bioelectronic devices for cardiac monitoring and treatment. Editor's summary: Temporary epicardial pacing leads provide short-term monitoring and stimulation for cardiac electrophysiological abnormalities. Clinically adopted pacing leads involve puncture of the cardiac tissue by direct electrode insertion or suture. Deng et al. developed a 3D-printed adhesive polymeric pacing lead that supported minimally invasive implantation on the epicardial surface and on-demand detachment to reduce the potential for tissue damage. In rat and porcine models, the adhesive pacing lead demonstrated strong adhesion to cardiac tissue and did not cause macroscopic tissue damage or bleeding with adhesion or on-demand removal. The device integrated with existing clinical pacing equipment and provided a stable electrical interface for cardiac monitoring and pacing for 10 to 14 days in rat and porcine models. These studies provide proof of principle for the use of printable adhesive electronics for cardiac pacing applications. —Molly Ogle [ABSTRACT FROM AUTHOR]

Coral mud is a special rock and sediment mass and is widely distributed in the South China Sea. Studying the deformation of coral mud is important for infrastructure development in the South China Sea. When choosing a model to describe the long-term deformation of coral mud, it is difficult for a simple nonlinear deformation model to accurately and universally describe the complex deformation processes of the sediment; a complex model is too time-consuming and difficult to apply to practical engineering. In this article, based on a classical element model, the Burgers model, certain elements are modified in combination with one-dimensional oedometer tests under normally consolidated situations. Then, combined with an unloading and reloading test, the modified Burgers model is further improved, and a modified Burgers model considering stress history is obtained. The modified Burgers model considering the stress history only has four parameters, all of which have practical physical significance, which makes the model easy to use. Different loading times and cyclic loading and unloading tests prove that the model has good stability and can, not only simulate the deformation characteristics of sediment, but can also provide good variation rules for the parameters. [ABSTRACT FROM AUTHOR]

A highly transparent and stretchable electrode based on a Au nanomesh, electrodeposited with a thin layer of MnO2 with a transparency of 84.7% is introduced. The as-prepared transparent, stretchable, and imperceptible supercapacitor (TSPS) exhibits a specific capacitance of 0.53 mF cm−2 and excellent bending stability, together with high stretchability (up to 160% strain). [ABSTRACT FROM AUTHOR]