MXene-Vitrimer Nanocomposites: Photo-Thermal Repair, Reinforcement, and Conductivity at Low Volume Fractions Through a Percolative Voronoi-Inspired Microstructure.

An innovative process to multifunctional vitrimer nanocomposites with a percolative MXene minor phase is reported, marking a significant advancement in creating stimuli-repairable, reinforced, sustainable, and conductive nanocomposites at diminished loadings. This achievement arises from a Voronoi-inspired biphasic morphological design via a straight-forward three-step process involving ambient-condition precipitation polymerization of micron-sized prepolymer powders, aqueous powder-coating with 2D MXene (TiCT), and melt-pressing of MXene-coated powders into crosslinked films. Due to the formation of MXene-rich boundaries between thiourethane vitrimer domains in a pervasive low-volume fraction conductive network, a low percolation threshold (≈0.

Multilevel Resilience and Appointment Attendance Among African American/Black Adults with HIV: A Prospective Multisite Cohort Study.

Background: Attending clinic appointments supports HIV viral suppression, yet racial disparities are documented. We assessed whether multilevel resilience resources were associated with appointment attendance among African American/Black (AA/B) adults living with HIV in the United States.

Methods: We ascertained data from 291 AA/B clinical cohort participants from 2018 to 2021.

Preserving Essential Skills: The Future of Vaginal Hysterectomy Training in Urogynaecology.

Objectives: This study aimed to evaluate the training and self-assessed proficiency of surgeons in the surgical management of pelvic organ prolapse (POP). We focused on the factors that influence decision-making, the surgical techniques employed, the training received, and the management of complications.

Design: A cross-sectional survey.

Qualitative Insights Regarding the Use of Tai Chi for Pain Management Among Adults With HIV.

Background: Approximately one-half of all adults with HIV experience chronic pain. Needed are nonpharmacological approaches to improve pain management in this population.

Methods: For this study, we conducted in-depth qualitative interviews (n = 20) with thirteen adults with HIV and 7 HIV care providers regarding their perceptions of Tai Chi for chronic pain management.

Lung cancer screening provider recommendation and completion in black and White patients with a smoking history in two healthcare systems: a survey study.

Background: Annual lung cancer screening (LCS) with low dose CT reduces lung cancer mortality. LCS is underutilized. Black people who smoke tobacco have high risk of lung cancer but are less likely to be screened than are White people.

Effects of stress management interventions on heart rate variability in adults with cardiovascular disease: a systematic review and meta-analysis.

Meta-analysis was used to investigate the potential benefits of stress management interventions (SMIs) on vagally-mediated heart rate variability (HRV) in adults with cardiovascular disease. Electronic bibliographic databases were searched through August 2022. Randomized controlled trials and quasi-experimental studies assessing effects of SMIs on HRV were included.

Transcriptional and epigenetic dysregulation impairs generation of proliferative neural stem and progenitor cells during brain aging.

The decline in stem cell function during aging may affect the regenerative capacity of mammalian organisms; however, the gene regulatory mechanism underlying this decline remains unclear. Here we show that the aging of neural stem and progenitor cells (NSPCs) in the male mouse brain is characterized by a decrease in the generation efficacy of proliferative NSPCs rather than the changes in lineage specificity of NSPCs. We reveal that the downregulation of age-dependent genes in NSPCs drives cell aging by decreasing the population of actively proliferating NSPCs while increasing the expression of quiescence markers.

Differential heat shock protein responses in two species of Pacific salmon and their utility in identifying heat stress.

Rapid and accelerating warming of salmon habitat has the potential to lower productivity of Pacific salmon ( species) populations. Heat stress biomarkers can indicate where warming is most likely affecting fish populations; however, we often lack clear classifications that separate individuals with and without heat stress needed to make these tools operational. We conducted a heat exposure experiment with trials lasting 12 or 36 h using juvenile Chinook salmon () and coho salmon () to validate heat stress biomarkers in white muscle.

Patients' attitudes to bedside teaching after the COVID-19 pandemic.

Background: Bedside teaching (BST) is a method of structured clinical teaching where the patient is central in education. We had previously explored the patients' perceptions of BST using both a qualitative research study and validation of a questionnaire, both showing strong support by patients for BST once basic rules of respect and confidentiality are followed. With the COVID-19 pandemic, clinical education transitioned to online/virtual learning.

Multilevel Resilience and HIV Virologic Suppression Among African American/Black Adults in the Southeastern United States.

Objective: To assess overall and by neighborhood risk environments whether multilevel resilience resources were associated with HIV virologic suppression among African American/Black adults in the Southeastern United States.

Setting And Methods: This clinical cohort sub-study included 436 African American/Black participants enrolled in two parent HIV clinical cohorts. Resilience was assessed using the Multilevel Resilience Resource Measure (MRM) for African American/Black adults living with HIV, where endorsement of a MRM statement indicated agreement that a resilience resource helped a participant continue HIV care despite challenges or was present in a participant's neighborhood.

Temporal regulation of head-on transcription at replication initiation sites.

Head-on (HO) collisions between the DNA replication machinery and RNA polymerase over R-loop forming sequences (RLFS) are genotoxic, leading to replication fork blockage and DNA breaks. Current models suggest that HO collisions are avoided through replication initiation site (RIS) positioning upstream of active genes, ensuring co-orientation of replication fork movement and genic transcription. However, this model does not account for pervasive transcription, or intragenic RIS.

Delayed onset phlegmasia cerulea dolens post-SARS-CoV-2 infection treated with minimally invasive clot retrieval technology.

Coronavirus disease 2019 is associated with a significant venous thromboembolic risk. Phlegmasia cerulean dolens is a severe form of deep vein thrombosis that can lead to acute limb ischemia. In this report, we present a 58-year-old woman who developed a delayed-onset left lower extremity phlegmasia cerulean dolens 8 weeks after coronavirus disease 2019 onset that led to compartment syndrome and acute limb ischemia from external compression of the arterial vasculature from edematous muscle.

Investigating effects of climate-induced changes in water temperature and diet on mercury concentrations in an Arctic freshwater forage fish.

The amount of mercury (Hg) in Arctic lake food webs is, and will continue to be, affected by rapid, ongoing climate change. At warmer temperatures, fish require more energy to sustain growth; changes in their metabolic rates and consuming prey with potentially higher Hg concentrations could result in increased Hg accumulation. To examine the potential implications of climate warming on forage fish Hg accumulation in Arctic lakes, we quantified growth and Hg accumulation in Ninespine Stickleback Pungitius pungitius under different temperature and diet scenarios using bioenergetics models.

Scalable and sustainable production of TiCT MXene and fluorine recovery from wastewater through cryolite precipitation.

Treatment of HF or HCl/LiF etched TiCT with 0.05 M NaHCO before water washing reduces the wastewater generated by 75%. When etched with HF, cryolite (NaAlF) precipitation from spent etching waste effectively removes fluorine from this waste stream, offers insight into the etching chemistry of MAX to MXene, and provides an effective analytical tool for optimization of MXene production.

Sexual assault predicts unhealthy weight management among college women: A longitudinal, prospective study.

: To examine whether sexual assault prospectively predicts unhealthy weight management behaviors in college women. : Participants were female college students ( = 483) with monthly assessments across the first year, including the frequency and severity of sexual assault and unhealthy weight management behaviors. : Frequency of sexual assault prior to college predicted dieting, purging, and diet pill use, over the first year.

Risk stratification through allergy history: single-centre experience of specialized COVID-19 vaccine clinic.

Anaphylaxis is a rare side-effect of COVID-19 vaccines. To (a) provide direct advice and reassurance to certain persons with a history of anaphylaxis/complex allergy, in addition to that available in national guidelines, and (b) to provide a medically supervised vaccination, a specialist regional vaccine allergy clinic was established. The main objective was to determine if risk stratification through history can lead to safe COVID-19 vaccination for maximum population coverage.

Resistance training for Black men with depressive symptoms: a pilot randomized controlled trial to assess acceptability, feasibility, and preliminary efficacy.

Background: Depression is under-recognized in Black men, who are less likely to seek or have access to psychiatric treatment. Resistance training (RT; i.e.

Subscribing to big data at scale.

Today, data is being actively generated by a variety of devices, services, and applications. Such data is important not only for the information that it contains, but also for its relationships to other data and to interested users. Most existing Big Data systems focus on answering queries from users, rather than collecting data, processing it, and serving it to users.

Disclosure of male attraction to primary care clinicians by adolescent sexual minority males.

Introduction: Adolescent sexual minority males (ASMM) experience higher rates of HIV and other sexually transmitted infections (STIs) relative to their heterosexual peers. Primary care clinicians (PCCs) are well positioned to discuss sexual health and STI prevention with adolescent males; however, ASMM report they are rarely asked about their sexual health, especially with respect to attraction and identity. This study sought to determine variables associated with disclosure of male attraction ("") to a PCC.

Development of Long and Short Forms of the Multilevel Resilience Resource Measure for African American/Black Adults Living with HIV.

Understanding resilience in relation to HIV-related outcomes may help address racial/ethnic disparities, however, significant gaps in its measurement preclude in-depth study. Thus, this research aims to develop and evaluate the psychometric properties of long and short forms of the Multilevel Resilience Resource Measure for African American/Black Adults Living with HIV. To develop the items, we conducted a mixed methods study (N = 48) and reviewed published resilience measures.

Stress management interventions for adults with heart failure: Systematic review and meta-analysis.

Objective: Stress management interventions (SMIs) targeting psychological stress and other psychosocial factors associated with heart failure (HF) morbidity and mortality are increasingly recommended for adults with HF. SMI content and delivery varies widely and meta-analyses are needed to synthesize current findings to identify gaps in the literature. The purpose of this meta-analysis is to examine the efficacy of SMIs for improving anxiety, depressive symptoms, exercise capacity, and disease-specific quality of life in adults with HF.