Publications by authors named "Harris O"

Two-dimensional (2D) transition metal dichalcogenides (TMDCs) such as MoS and WSe are excellent candidates for photovoltaic (PV) applications. Here, we present the modeling, fabrication, and characterization of large-area CVD-grown MoS-based flexible PV on an off-the-shelf, 3 μm-thick flexible colorless polyimide with polyimide encapsulation designed for space structures. The devices are characterized under 1 sun AM0 illumination and show a of 0.

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Microglia, the resident immune cells of the central nervous system (CNS), are crucial for normal brain development and function. They become reactive in response to brain injury and disease, a process known as microglial reactivity. This reactivity, along with microglial homeostasis, is tightly regulated by the local microenvironment and interactions with surrounding cells.

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Reversible addition fragmentation chain transfer (RAFT) solution polymerisation of the bio-based lactone monomer γ-methyl-α-methylene-γ-butyrolactone (γMeMBL) has been demonstrated in DMSO and Cyrene. RAFT control was evidenced by control over molecular weights, low disperisites, and kinetic evaluation. Purified P(γMeMBL) homopolymers exhibited high glass transition temperatures (206-221 °C) and excellent thermal stabilities.

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Objectives: The objectives of this study are as follows: to assess the uropathogen antibiogram at two tertiary hospitals in Victoria to look at the difference in susceptibility patterns, to assess whether national guideline recommendations were applicable and to assess the feasibility of local antibiogram analysis to guide development of hospital-specific guidelines for empirical treatment of urosepsis and for pre-operative prophylaxis for urological procedures.

Patients And Methods: All positive urine cultures analysed at Barwon Health and Monash Health, two tertiary hospitals in regional and metropolitan Victoria, Australia, respectively, between January 2019 and December 2020 were retrospectively identified. Data obtained included the organism cultured and their susceptibility profiles.

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  • Previous animal studies indicated concerns about salbutamol's effects on lung injury when exposed to ozone air pollution.
  • A double-blind, randomized, placebo-controlled study involved 18 participants with exercise-induced bronchospasm (EIB) testing the impacts of salbutamol in both ozone and room air during exercise.
  • Results showed that salbutamol significantly improved lung function without increasing airway inflammation, suggesting it is safe for EIB patients to use the medication during high ozone conditions.
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Background: Leadership can be an isolating experience and leaders from underrepresented groups (URGs) may experience even greater isolation and vulnerability because of lack of representation. Given the collaborative nature of medicine, leadership programs for physicians need to address isolation. Social support is one mechanism to combat this isolation; however, most leadership programs focus exclusively on skills building.

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Developmental assets are critical to the health and wellbeing of youth. The current study examines the influence of developmental assets on PrEP use and HIV testing among YBMSM ages 18-24. Using a cross-sectional survey of YBMSM (N = 225), this study explored the role of external (e.

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  • Animals have developed visual systems that simplify processing to help them make better decisions in their complex environments.
  • Two key mechanisms for efficient visual processing are categorization, which sorts stimuli into discrete groups, and specialization, which uses different cognitive strategies for various types of stimuli.
  • The review also discusses visual illusions as a nonadaptive outcome of these simplification processes and compares visual cognition in humans and other animals to understand their evolution and function.
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Purpose: The study sought to understand Haitian parents' perspectives on heritage language maintenance with typically developing children.

Method: Semistructured interviews were conducted with 10 Haitian parents of typically developing children. A thematic analysis was conducted to determine recurring themes.

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Academic medical institutions seek to recruit and retain a diverse workforce to foster equitable, supportive environments in which early-stage investigators, especially those who are underrepresented in medicine, can thrive. Intersectionality is a critical theoretical framework rooted in Black feminist activism and scholarship that elucidates how power and privilege are differentially structured for groups at different intersectional sociodemographic positions. As a dynamic method of analyzing multiple axes of power and inequality, intersectionality has the potential to offer a critical lens through which to view the mentor-mentee relationship.

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  • - Ground-level ozone (O) is a harmful air pollutant that can worsen respiratory symptoms and affect lung function, particularly during exercise.
  • - A study with 20 trained athletes tested their performance while exposed to high levels of ozone (170 ppb) versus clean air, finding lower oxygen uptake and ventilation during intense exercise.
  • - The results indicate that exposure to ozone can impair exercise performance and hinder oxygen transport, highlighting the need for further research on how pollution affects athletic capabilities.
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Background: Lesbian, gay, bisexual, transgender, intersex, queer, and allied (LGBTQIA+) individuals encounter challenges with access and engagement with health services. Studies have reported that LGBTQIA+ individuals experience stigma, discrimination, and health workers' microaggression when accessing health care. Compelling evidence suggests that the LGBTQIA+ community faces disproportionate rates of HIV infection, mental health disorders, substance abuse, and other noncommunicable diseases.

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Objectives: In overdose, gamma-hydroxybutyrate (GHB) and its precursors can cause decreased levels of consciousness, coma and death. Here, we aim to describe reported exposure to GHB at four EDs in Sydney, New South Wales (NSW), Australia.

Methods: We searched the ED databases of four Sydney metropolitan hospitals for presentations relating to GHB exposure between 2012 and 2021.

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With the aim of producing a 3D representation of tumors, imaging and molecular annotation of xenografts and tumors (IMAXT) uses a large variety of modalities in order to acquire tumor samples and produce a map of every cell in the tumor and its host environment. With the large volume and variety of data produced in the project, we developed automatic data workflows and analysis pipelines. We introduce a research methodology where scientists connect to a cloud environment to perform analysis close to where data are located, instead of bringing data to their local computers.

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The legacy of Stanford University's Department of Neurosurgery began in 1858, with the establishment of a new medical school on the West Coast. Stanford Neurosurgery instilled an atmosphere of dedication to neurosurgical care, scientific research, education, and innovation. We highlight key historical events leading to the formation of the medical school and neurosurgical department, the individuals who shaped the department's vision and expansion, as well as pioneering advances in research and clinical care.

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  • Whipple disease (WD) is a rare infection caused by the bacterium Tropheryma whipplei, primarily affecting genetically predisposed individuals.
  • Researchers developed an immunofluorescence serological assay to detect antibodies against T. whipplei to help rule out WD in patients being evaluated for the disease.
  • In a study comparing 16 WD patients with 156 controls, low antibody titres were found in WD patients, and the assay demonstrated 91% specificity for excluding the disease, which could improve with further validation in diverse populations.
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Background: Pharmacies are a promising setting through which to expand access to human immunodeficiency virus (HIV) prevention, including pre-exposure and post-exposure prophylaxis (PrEP and PEP, respectively). We aimed to evaluate and inform the implementation of California's Senate Bill 159 (2019), allowing pharmacists to independently prescribe PrEP and PEP.

Methods: From October through December 2022, we conducted a cross-sectional study of 919 California pharmacists and pharmacy students, primarily recruited via the email listservs of professional organizations.

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Objectives: Sexually transmitted infections (STI) have been on the rise in the United States with racial/ethnic minority groups, gay and bisexual men, and youth experiencing the highest STI and HIV infection rates. In 2022, California became the first state in the nation to pass legislation, Senate Bill 306 (SB 306), requiring health care plans to cover the costs of home test kits for STIs, including HIV. This study examines provisions within SB 306 and its potential to reduce STI and HIV disparities among key demographic groups and geographic regions within California.

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  • Poor adherence to antiretroviral therapy (ART) in Sub-Saharan Africa, particularly in Ghana, is influenced by social support and mental health challenges, though these factors are often under-researched in low-income settings.
  • A study involving 181 people living with HIV revealed that ART adherence was only 34%, with high social support positively associated with adherence.
  • Key predictors of adherence included having strong social support, not living in urban areas, and not disclosing one's HIV status, while depression did not significantly affect adherence rates.
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Background: Intracranial pressure (ICP) monitoring is widely practiced, but the indications are incompletely developed, and guidelines are poorly followed.

Objective: To study the monitoring practices of an established expert panel (the clinical working group from the Seattle International Brain Injury Consensus Conference effort) to examine the match between monitoring guidelines and their clinical decision-making and offer guidance for clinicians considering monitor insertion.

Methods: We polled the 42 Seattle International Brain Injury Consensus Conference panel members' ICP monitoring decisions for virtual patients, using matrices of presenting signs (Glasgow Coma Scale [GCS] total or GCS motor, pupillary examination, and computed tomography diagnosis).

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Background: Kidney transplant is the gold standard for renal replacement therapy in patients with autosomal dominant polycystic kidney disease (ADPKD), which is the fourth leading cause of kidney failure. Despite the medical and economic benefits of preemptive kidney transplant over dialysis before transplant, only 9-21% of qualifying patients receive preemptive transplants. Given the low rates of preemptive transplant, the aim of this study was to determine perceived facilitators and barriers to preemptive transplant among ADPKD patients using a qualitative approach.

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Background: Efforts to mitigate HIV transmission among gay and bisexual men have not been sufficient to level persistent racial inequities which now extend to the use of daily oral pre-exposure prophylaxis (PrEP) for HIV prevention. Community-involved ethnographic research is crucial to galvanizing collaboration between patients, researchers, and policymakers to identify the social determinants of emerging PrEP inequities. In partnership with community key informants, we conducted a Rapid Ethnographic Assessment (REA) of multilevel PrEP use determinants among young Black gay and bisexual (YBGBM) men in the metropolitan Atlanta area to inform the development and coordination of local HIV programs.

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