Effectiveness of Acupuncture and Brief Telehealth Intervention for Individuals With Posttraumatic Stress Disorder.

PURPOSE: This open-trial pilot study evaluated the feasibility and effectiveness of acupuncture with brief therapy (ABT) for individuals with posttraumatic stress disorder (PTSD). METHOD: Participants included 27 individuals with PTSD diagnoses confirmed using the Clinician-Administered PTSD Scale for DSM-5. Before ABT, 22 participants completed eight acupuncture sessions and three telehealth sessions of a brief treatment program for PTSD (Brief Relaxation, Education, and Trauma Healing [BREATHE]). RESULTS: ABT significantly reduced PTSD symptoms, depression symptoms, anxiety, and improved trauma-related cognition. CONCLUSION: Acupuncture can play an important role in mental health recovery, and combining acupuncture with a brief, telehealth-based treatment (BREATHE) may assist recovery among individuals with PTSD. [Journal of Psychosocial Nursing and Mental Health Services, xx(xx), xx-xx.].

Extraordinary Thermoelectric Properties of Topological Surface States in Quantum-Confined Cd3As2 Thin Films.

Topological insulators and semimetals have been shown to possess intriguing thermoelectric properties promising for energy harvesting and cooling applications. However, thermoelectric transport associated with the Fermi arc topological surface states on topological Dirac semimetals remains less explored. This work systematically examines thermoelectric transport in a series of topological Dirac semimetal Cd3As2 thin films grown by molecular beam epitaxy. Surprisingly, significantly enhanced Seebeck effect and anomalous Nernst effect are found at cryogenic temperatures when the Cd3As2 layer is thin. In particular, a peak Seebeck coefficient of nearly 500 µV K-1 and a corresponding thermoelectric power factor over 30 mW K-2 m-1 are observed at 5 K in a 25-nm-thick sample. Combining angle-dependent quantum oscillation analysis, magnetothermoelectric measurement, transport modeling, and first-principles simulation, the contributions from bulk and surface conducting channels are isolated and the unusual thermoelectric properties are attributed to the topological surface states. The analysis showcases the rich thermoelectric transport physics in quantum-confined topological Dirac semimetal thin films and suggests new routes to achieving high thermoelectric performance at cryogenic temperatures.

Healing Trauma While Staying at Home: Using Telehealth to Conduct a Brief Treatment Program for Posttraumatic Stress Disorder.

Studies suggest that a three-session brief treatment program (Brief Relaxation, Education, and Trauma Healing [BREATHE]) can help treat posttraumatic stress disorder (PTSD) and symptoms of trauma; however, the program has not been examined via telehealth. Thus, the current study evaluated the feasibility of BREATHE delivered via telehealth. The intervention included breathing retraining and psychoeducation about PTSD and trauma. Thirty participants from the community with confirmed PTSD diagnoses participated in this telehealth program. Treatment retention was high, and participants showed decreased PTSD symptoms, posttraumatic cognitions, depression, anxiety, overall psychiatric symptoms, and internalized stigma and increased resiliency at posttreatment and 3-month follow up. Results suggest that a telehealth brief treatment program for PTSD is feasible and effective for individuals with PTSD. [Journal of Psychosocial Nursing and Mental Health Services, xx(x), xx-xx.].

Lattice Dynamics and Thermal Transport in Semiconductors with Anti-Bonding Valence Bands.

Achieving high thermoelectric performance requires efficient manipulation of thermal conductivity and a fundamental understanding of the microscopic mechanisms of phonon transport in crystalline solids. One of the major challenges in thermal transport is achieving ultralow lattice thermal conductivity. In this study, we use the anti-bonding character of the highest-occupied valence band as an efficient descriptor for discovering new materials with an ultralow thermal conductivity. We first examined the relationship between anti-bonding valence bands (ABVBs) and low lattice thermal conductivity in model systems PbTe and CsPbBr3. Then, we conducted a high-throughput search in the Materials Project database and identified over 600 experimentally stable binary semiconductors with an anti-bonding character in their valence bands. From our candidate list, we conducted a comprehensive analysis of the chemical bonds and the thermal transport in the XS family, where X = K, Rb, and Cs are alkaline metals. These materials all exhibit ultralow thermal conductivities less than 1 W/(m K) at room temperature despite simple structures. We attributed the ultralow thermal conductivity to the weakened bonds and increased phonon anharmonicity due to their ABVBs. Our results provide chemical intuitions to understand lattice dynamics in crystals and open up a convenient venue toward searching for materials with an intrinsically low lattice thermal conductivity.