Binding Modes and Water-Mediation of Polyelectrolyte Adsorption to a Neutral CaCO Surface.

Aqueous polyelectrolytes are effective mineralization inhibitors due to their ability to template onto crystal surfaces and chelate ions in solution. These additives have been shown to alter the morphology of calcium carbonate crystals, making them promising candidates for biological and industrial applications. However, while key to designing more effective mineralization inhibitors, the molecular mechanisms governing the interactions between polyelectrolytes and crystal surfaces remain poorly understood.

Pain Medication Data from the 2021 and 2022 National Football League Prescription Drug Monitoring Program.

We report 2021 and 2022 prescription drug monitoring program data that include pain medication prescriptions, including over-the-counter medications, issued to NFL players by either club physicians or external medical providers and entered in the NFL electronic medical record. Of 3142 players who signed a contract with at least one NFL Club during the 2021 season, there were 14,903 prescriptions for pain medications issued to 2207 players. During the 2022 season, there were 14,880 prescription pain medications issued to 2189 players (out of a population of 3152).

Educational and occupational aspirations of adolescent and young adult cancer survivors: a qualitative analysis.

Purpose: Adolescent and young adult cancer survivors (AYACS) are patients diagnosed with cancer between 15 and 39 years of age. AYACS are often derailed from planned educational and occupational endeavors due to disruption from cancer treatment and its consequences. The study objective was to examine how a personal cancer diagnosis impacted AYACS' experiences related to these endeavors.

Bivalent Omicron BA.4/BA.5 BNT162b2 Vaccine in 6-Month- to <12-Year-Olds.

Background: With the future epidemiology and evolution of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) uncertain, the use of safe and effective coronavirus disease 2019 (COVID-19) vaccines in pediatric populations remains important.

Methods: We report data from two open-label substudies of an ongoing phase 1/2/3 master study (NCT05543616) investigating the safety and immunogenicity of a variant-adapted bivalent COVID-19 vaccine encoding ancestral and Omicron BA.4/BA.

Early and widespread engagement of the cerebellum during hippocampal epileptiform activity Format: Brief Communication.

Despite research illustrating the cerebellum may be a critical circuit element in the epilepsies, remarkably little is known about cerebellar engagement during seizures. We therefore implemented a novel method for repeated imaging of the cerebellum in awake, chronically epileptic animals. We found widespread changes in cerebellar calcium signals during behavioral seizures during hippocampal seizures that remained electrographic only, arguing against cerebellar modulation simply reflecting motor components.

Adsorption Isotherm and Mechanism of Ca Binding to Polyelectrolyte.

Polyelectrolytes, such as poly(acrylic acid) (PAA), can effectively mitigate CaCO scale formation. Despite their success as antiscalants, the underlying mechanism of binding of Ca to polyelectrolyte chains remains unresolved. Through all-atom molecular dynamics simulations, we constructed an adsorption isotherm of Ca binding to sodium polyacrylate (NaPAA) and investigated the associated binding mechanism.

The Pigeon as a Model of Complex Visual Processing and Category Learning.

Over the past 30 years, behavioral, computational, and neuroscientific investigations have yielded fresh insights into how pigeons adapt to the diverse complexities of their visual world. A prime area of interest has been how pigeons categorize the innumerable individual stimuli they encounter. Most studies involve either photorealistic representations of actual objects thus affording the virtue of being naturalistic, or highly artificial stimuli thus affording the virtue of being experimentally manipulable.

What's in the Shadows? Formal Analysis: Art History Method to Improve Interpretation Skills for Mammography and Chest Radiographs in Resident Education.

Rationale And Objectives: To assess the feasibility of using an art history tool of formal analysis in resident education for interpretations of mammography and chest radiographs METHODS: In a pre-post study design, residents were shown pre-selected 10 mammograms and 10 chest radiographs for a total of 20 unique anonymized patient cases. After the pretest, residents attended four formal analysis art history lessons. The formal elements included line, light, dark, shade, proportion and balance.

Enhanced attention in rats following blast-induced traumatic brain injury.

Purpose: To evaluate visuo-cognitive sequelae following blast-induced traumatic brain injury in a rat model.

Methods: Rats were randomly assigned to one of four groups depending on the intensity/quantity of a blast received in a blast chamber: sham (no blast), low intensity (22 psi), medium intensity (26 psi), or three medium intensity blasts (26 psi × 3). After recovery, all subjects were given visual discrimination tasks of increasing complexity, until mastery.

The role of numerical and nonnumerical magnitudes in pigeons' conditional discrimination behavior.

Research on approximate numerical estimation suggests that numerical representations can be influenced by nonnumerical magnitudes. Current theories of numerical cognition differ on the nature of this interaction. The present project evaluated the effect of task requirements on the stimulus control exerted by numerical and nonnumerical magnitudes on pigeons' numerical discrimination behavior.

The pigeon as a machine: Complex category structures can be acquired by a simple associative model.

Never known for its smarts, the pigeon has proven to be a prodigious classifier of complex visual stimuli. What explains its surprising success? Does it possess elaborate executive functions akin to those deployed by humans? Or does it effectively deploy an unheralded, but powerful associative learning mechanism? In a series of experiments, we first confirm that pigeons can learn a variety of category structures - some devised to foil the use of advanced cognitive processes. We then contrive a simple associative learning model to see how effectively the model learns the same tasks given to pigeons.

Factors associated with antibody titer levels among an occupational cohort of fully vaccinated individuals and subsequent risk of COVID-19 infection: A cohort study.

This study (1) determined the association of time since initial vaccine regimen, booster dose receipt, and COVID-19 history with antibody titer, as well as change in titer levels over a defined period, and (2) determined risk of COVID-19 associated with low titer levels. This observational study used data from staff participating in the National Football League COVID-19 Monitoring Program. A cohort of staff consented to antibody-focused sub-study, during which detailed longitudinal data were collected.

Feasibility and Acceptability of a Novel Intensive Care Unit Communication Intervention ("Let's Talk") and Initial Assessment Using the Multiple Goals Theory of Communication.

Family members of intensive care unit (ICU) patients often report poor communication, feeling unprepared for ICU family meetings, and poor psychological outcomes after decision-making. The objective of this study was to create a tool to prepare families for ICU family meetings and assess feasibility of using Communication Quality Analysis (CQA) to measure communication quality of family meetings. This observational study was conducted at an academic tertiary care center in Hershey, PA from March 2019 to 2020.

Identification and quantification of polymeric impurity in block copolymer by one-dimensional and two-dimensional liquid chromatography coupled to high-resolution mass spectrometry and evaporative light scattering detector.

Identifying and quantifying polymeric impurities in a polymeric material is critical for understanding material quality and performance, but it remains a challenge requiring developing new characterization methods. In this work, a comprehensive two-dimensional liquid chromatography method with simultaneous evaporative light scattering and high-resolution mass spectrometry detection was developed to separate and identify a polymeric impurity in alkyl alcohol-initiated polyethylene oxide/polybutylene oxide diblock copolymer. Size exclusion chromatography was implemented in the first dimension, and gradient reversed-phase liquid chromatography using a large-pore C4 column was applied in the second dimension using an active solvent modulation valve as the interface to minimize the polymer breakthrough.

Resolving the associative learning paradox by category learning in pigeons.

A wealth of evidence indicates that humans can engage two types of mechanisms to solve category-learning tasks: declarative mechanisms, which involve forming and testing verbalizable decision rules, and associative mechanisms, which involve gradually linking stimuli to appropriate behavioral responses. In contrast to declarative mechanisms, associative mechanisms have received surprisingly little attention in the broader category-learning literature. Although various forms of associatively driven artificial intelligence (AI) have matched-and even surpassed-humans' performance on several challenging problems, associative learning is routinely dismissed as being too simple to power the impressive cognitive achievements of both humans and non-human species.

Provider Perspectives of Transitions of Care at a Tertiary Care Children's Hospital With a Hospitalist-Run Discharge Clinic.

Children's hospitals are discharging patients to home with increasingly complex outpatient needs, making safe transitions of care (ToCs) of vital importance. Our study involved a survey of both outpatient providers and pediatric hospitalists associated with our medical center to better describe providers' views on the ToC process. The survey included questions assessing views on patient care responsibilities, resource availability, our hospitalist-run postdischarge clinic (PDC), and comfort with telemedicine.

Dietary long-chain omega 3 fatty acids modify sphingolipid metabolism to facilitate airway hyperreactivity.

Omega-3 polyunsaturated fatty acids (n-3 PUFAs) are essential nutrients that can affect inflammatory responses. While n-3 PUFAs are generally considered beneficial for cardiovascular disease and obesity, the effects on asthma, the most common inflammatory lung disease are unclear. While prenatal dietary n-3 PUFAs decrease the risk for childhood wheezing, postnatal dietary n-3 PUFAs can worsen allergic airway inflammation.

The effects of reduced nicotine content cigarettes on biomarkers of nicotine and toxicant exposure, smoking behavior and psychiatric symptoms in smokers with mood or anxiety disorders: A double-blind randomized trial.

Background: The U.S. Food and Drug Administration and the government of New Zealand have proposed a reduction of the nicotine content in cigarettes to very low levels.

Minding behavior.

Perhaps the most popular definition of psychology is the science of mind and behavior. However, the interrelation between mind and behavior is one of continuing controversy. The present paper examines this enduring issue from the perspectives of George J.