Flexible Microfluidic Strain Sensor Made with Poly(3,4-ethylenedioxythiophene):polystyrenesulfonate-MXene-Au Nanocomposites for Monitoring Physiological Signals.

Flexible strain sensors have been widely used in wearable electronics. However, the fabrication of flexible strain sensors with a large strain detection range, high sensitivity, and negligible hysteresis remains a formidable challenge, even after enormous advancements in the field. Herein, a flexible microfluidic strain sensor was fabricated by filling poly(3,4-ethylenedioxythiophene):polystyrenesulfonate-MXene-gold (PEDOT:PSS-MXene-Au) nanocomposites into microchannels in an elastic matrix.

A wearable nanozyme-enzyme electrochemical biosensor for sweat lactate monitoring.

In this study, we developed a wearable nanozyme-enzyme electrochemical biosensor that enablies sweat lactate monitoring. The biosensor comprises a flexible electrode system prepared on a polyimide (PI) film and the Janus textile for unidirectional sweat transport. We obtained favorable electrochemical activities for hydrogen peroxide reduction by modifying the laser-scribed graphene (LSG) electrode with cerium dioxide (CeO)-molybdenum disulphide (MoS) nanozyme and gold nanoparticles (AuNPs).

From individual leaves to forest stands: importance of niche, distance decay, and stochasticity vary by ecosystem type and functional group for fungal community composition.

Community assembly is influenced by environmental niche processes as well as stochastic processes that can be spatially dependent (e.g. dispersal limitation) or independent (e.

An ultrasensitive FET biosensor based on vertically aligned MoS nanolayers with abundant surface active sites.

Molybdenum disulfide (MoS) nanolayers are one of the most promising two-dimensional (2D) nanomaterials for constructing next-generation field-effect transistor (FET) biosensors. In this article, we report an ultrasensitive FET biosensor that integrates a novel format of 2D MoS, vertically-aligned MoS nanolayers (VAMNs), as the channel material for label-free detection of the prostate-specific antigen (PSA). The developed VAMNs-based FET biosensor shows two distinctive advantages.

Effectiveness of Virtual Wellness Programming for Adults with Disabilities: Clients' Perspectives.

Introduction: The health status of adults with disabilities is recognized as a formal health disparity. Due to COVID-19, participation in wellness programs for this population has been restricted. To provide program participants with continued accessibility, one regional wellness program for adults with disabilities adopted a virtual format.

The Concurrent Control of Motion and Contact Force in the Presence of Predictable Disturbances.

The simultaneous control of force and motion is important in everyday activities when humans interact with objects. While many studies have analyzed the control of movement within a perturbing force field, few have investigated its dual aspects of controlling a contact force in nonisometric conditions. The mechanism by which the central nervous system controls forces during movements is still unclear, and it can be elucidated by estimating the mechanical properties of the arm during tasks with concurrent motion and contact force goals.

A common base method for analysis of qPCR data and the application of simple blocking in qPCR experiments.

Background: qPCR has established itself as the technique of choice for the quantification of gene expression. Procedures for conducting qPCR have received significant attention; however, more rigorous approaches to the statistical analysis of qPCR data are needed.

Results: Here we develop a mathematical model, termed the Common Base Method, for analysis of qPCR data based on threshold cycle values (C ) and efficiencies of reactions (E).

Assessment of direct exposure and leaching risk from PAHs in roadway and stormwater system residuals.

Wastes generated from municipal cleaning activities such as street sweeping, ditch cleaning, stormwater pond maintenance, and catch basin sediment removal require appropriate management. Beneficial use of these types of waste is a good alternative to landfilling; however, there are genuine concerns about possible soil and groundwater contamination by pollutants such as polycyclic aromatic hydrocarbons (PAHs). This study assessed the potential risks associated with beneficial use of roadway and stormwater system residuals collected from 14 cities across the state of Florida, USA.

Arsenic leaching and speciation in C&D debris landfills and the relationship with gypsum drywall content.

The effects of sulfide levels on arsenic leaching and speciation were investigated using leachate generated from laboratory-scale construction and demolition (C&D) debris landfills, which were simulated lysimeters containing various percentages of gypsum drywall. The drywall percentages in lysimeters were 0, 1, 6, and 12.4wt% (weight percent) respectively.

Case study of landfill leachate recirculation using small-diameter vertical wells.

A case study of landfill liquids addition using small diameter (5 cm) vertical wells is reported. More than 25,000 m(3) of leachate was added via 134 vertical wells installed 3 m, 12 m, and 18 m deep over five years in a landfill in Florida, US. Liquids addition performance (flow rate per unit screen length per unit liquid head) ranged from 5.

Methodology for assessing thioarsenic formation potential in sulfidic landfill environments.

Arsenic leaching and speciation in landfills, especially those with arsenic bearing waste and drywall disposal (such as construction and demolition (C&D) debris landfills), may be affected by high levels of sulfide through the formation of thioarsenic anions. A methodology using ion chromatography (IC) with a conductivity detector was developed for the assessment of thioarsenic formation potential in sulfidic landfill environments. Monothioarsenate (H2AsSO3(-)) and dithioarsenate (H2AsS2O2(-)) were confirmed in the IC fractions of thioarsenate synthesis mixture, consistent with previous literature results.

The caricature effect in drawing: evidence for the use of categorical relations when drawing abstract pictures.

Five experiments were conducted to determine how novice and expert drawers represent relative size for the purposes of drawing. Participants were shown images of two-part or three-part geometric figures composed of two spatially separated shapes. In each picture there was a small but noticeable relative-size difference between the constituent shapes (one part of the picture was always 25% larger than another part).

"Hooking up" among college students: demographic and psychosocial correlates.

This study investigated 832 college students' experiences with hooking up, a term that refers to a range of physically intimate behavior (e.g., passionate kissing, oral sex, and intercourse) that occurs outside of a committed relationship.

Application of the social ecological model in folic acid public health initiatives.

All women of childbearing age who are capable of becoming pregnant should consume 0.4 mg/400 microg of folic acid daily. Folic acid decreases the incidence of neural tube defects in newborns.

Convergent and predictive validity of three scales related to falls in the elderly.

The purpose of this study was to determine if the Activities-specific Balance Confidence (ABC) Scale, Falls Efficacy Scale (FES), and Survey of Activities and Fear of Falling in the Elderly (SAFE) assessments measured fear of falling in the same manner (convergent validity) and to determine if they predicted those individuals who, based upon a previous history of falls, limitation of activity, and not leaving home, had an increased potential for falling (predictive validity). One hundred and eighteen individuals, 60 years of age and older, completed each of the assessments. They self-reported activity restriction, fall history, and the number of times they left the home each week.

Evaluation of three methodologies for assessing work activity during computer use.

The overall goal of this study was to evaluate three separate methodologies for gathering work activity information among computer users. These methodologies included worker self-report, work sampling, and activity monitoring. A repeated measures design was employed whereby data were collected simultaneously on each subject (n = 51) across three consecutive workdays.

A survey of lead-based paint abatement projects performed in public buildings in Erie and Crawford Counties, Pennsylvania, during the time period 1995-1997.

A survey of lead-based paint abatement projects in public buildings of Crawford and Erie Counties, Pennsylvania, was conducted during the time period January 1995 to March 1997. These survey results suggest that few lead abatement projects were performed during this time period. Projects that were performed commonly did not employ proper lead abatement practices as described by the U.