Characterization of a large caliber explosively driven shock tube.

Research on evaluating weapon systems, building structures, and personnel protection has attracted considerable attention due to the high incidence of blast accidents. The explosively driven shock tube is an affordable and replicable method for investigating high pressure blast waves and extreme shock environments. A newly constructed large caliber explosively driven shock tube with an inner diameter of 2.

Room-Temperature Liquid Crystalline Tetraphenylethylene-Surfactant Complex with Chiral Supramolecular Structure and Tunable Circularly Polarized Luminescence.

A novel room-temperature liquid crystal of tetraphenylethylene derivative (TPE-DHAB) was synthesized using an ionic self-assembly strategy. The TPE-DHAB complex exhibits typical aggregation-induced emission properties and a unique helical supramolecular structure. Moreover, the generation and handedness inversion of circularly polarized luminescence (CPL) can be achieved through further chiral solvation, providing a facile approach to fabricate room-temperature liquid crystalline materials with controllable supramolecular structures and tunable CPL properties through a synergistic strategy of ionic self-assembly and chiral solvation process.

Development of a Screening Tool for Oral Frailty in Community-Dwelling Older Adults: A Cross-Sectional Study.

Objectives: To develop a Screening for Oral Frailty Tool (SOFT) and evaluate its reliability and validity among Chinese community-dwelling older adults.

Design: Cross-sectional analysis.

Setting And Participants: The study was conducted as part of an ongoing community-based prospective study in Shanghai.

A Study on the Critical Saturation Response Characteristics of Simple and Sandwich Cylindrical Shells under Long-Duration Blast Loading.

Experimental research and numerical simulations of the structural response to shock waves with pulse durations of hundreds of milliseconds, or even seconds, are extremely challenging. This paper takes typical single-layer and sandwich cylindrical shells as the research objects. The response rules of cylindrical shells under long-duration blast loadings were studied.

Perceived organizational support, self-efficacy and cognitive reappraisal on resilience in emergency nurses who sustained workplace violence: A mediation analysis.

Aims: The aims of this study were as follows: (a) to examine the relationship between perceived organizational support and resilience; (b) to investigate the potential mediating role of general self-efficacy and cognitive reappraisal among emergency nurses who have experienced workplace violence; and (c) to explore the application of Kumpfer's resilience framework to emergency department nurses.

Design: A cross-sectional study.

Methods: From February 17, 2021, to March 8, 2021, 825 emergency nurses working in the emergency departments of tertiary hospitals in Shanghai, China, completed an online survey.

Decreased resting-state neural signal in the left angular gyrus as a potential neuroimaging biomarker of schizophrenia: An amplitude of low-frequency fluctuation and support vector machine analysis.

Objective: Schizophrenia (SCH) is primarily diagnosed based on specific clinical symptoms, with the lack of any objective SCH-related biomarkers often resulting in patient misdiagnosis and the underdiagnosis of this condition. This study was developed to assess the utility of amplitude of low-frequency fluctuation (ALFF) values analyzed support vector machine (SVM) methods as a means of diagnosing SCH.

Methods: In total, 131 SCH patients and 128 age- and gender-matched healthy control (HC) individuals underwent resting-state functional magnetic resonance imaging (rs-fMRI), with the resultant data then being analyzed using ALFF values and SVM methods.

The effects of early exercise on cardiac rehabilitation-related outcome in acute heart failure patients: A systematic review and meta-analysis.

Background: Heart failure can be classified into chronic heart failure and acute heart failure. Rapid onsets or worsening symptoms characterize acute heart failure, while progressive symptoms characterize chronic heart failure. Exercise-based cardiac rehabilitation is recommended for chronic heart failure patients, yet controversies on whether early exercise is safe and advantageous for acute heart failure patients remain unclear.

Mental Symptoms and Stress of Hospitalized Schizophrenia Patients With 2019 Novel Coronavirus Disease: An Observation Study.

The 2019 novel coronavirus disease (COVID-19) is an extremely rapidly spreading respiratory infection caused by SARS-CoV-2. Many schizophrenic patients were infected with COVID-19 in Wuhan City, Hubei Province. This study took hospitalized schizophrenia patients with COVID-19 as the research subjects and observed the changes in psychopathology and stress of patients with COVID-19 and the accompanying social isolation.

Strain Rate Sensitivity of Tensile Properties in Ti-6.6Al-3.3Mo-1.8Zr-0.29Si Alloy: Experiments and Constitutive Modeling.

The complex deformation usually involves wide strain-rate change. However, few efforts have been devoted to investigate the effect of strain rate history on the tensile behavior of α + β titanium alloy. In present paper, tensile tests of Ti-6.